Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/geometry/magneticfield/History

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Diff markup

Differences between /geometry/magneticfield/History (Version 11.3.0) and /geometry/magneticfield/History (Version 10.4.p2)


  1 # Category field History                       <<   1 $Id: History 107508 2017-11-20 08:23:14Z gcosmo $
                                                   >>   2 -------------------------------------------------------------------
  2                                                     3 
  3 See `CONTRIBUTING.rst` for details of **requir <<   4      =========================================================
  4 which **must** added in reverse chronological  <<   5      Geant4 - an Object-Oriented Toolkit for Simulation in HEP
  5 It must **not** be used as a substitute for wr <<   6      =========================================================
  6                                                <<   7 
  7 ---------------------------------------------- <<   8                       Category History file
  8                                                <<   9                       ---------------------
  9 ## 2024-11-26 Ivana Hrivnacova (field-V11-02-0 <<  10 This file should be used by G4 developers and category coordinators
 10 - Better names for the G4EquationType enum con <<  11 to briefly summarize all major modifications introduced in the code
 11                                                <<  12 and keep track of all category-tags.
 12 ## 2024-11-04 Philippe Canal (field-V11-02-05) <<  13 It DOES NOT substitute the  CVS log-message one should put at every
 13 - Improve stability of static initialization f <<  14 committal in the CVS repository !
 14   StepperDescription() in G4DormandPrince745.  <<  15 
 15                                                <<  16      ----------------------------------------------------------
 16 ## 2024-09-10 Ivana Hrivnacova (field-V11-02-0 <<  17      * Reverse chronological order (last date on top), please *
 17 - Coverity fixes:                              <<  18      ----------------------------------------------------------
 18   - Use std::move, const auto& instead of auto << 
 19                                                << 
 20 ## 2024-06-20 Ivana Hrivnacova (field-V11-02-0 << 
 21 - Fix in G4FieldBuilder for local fields:      << 
 22   apply the local fields in the order of user  << 
 23                                                << 
 24 ## 2024-04-29 Ivana Hrivnacova (field-V11-02-0 << 
 25 - Added classes for automatic field constructi << 
 26   - G4FieldBuilder[Messenger], G4FieldParamete << 
 27   - No changes in other Geant4 classes         << 
 28                                                << 
 29 ## 2024-04-17 Ben Morgan (field-V11-02-01)     << 
 30 - Fix maybe-uninitialized warnings found in AT << 
 31   - Reported in internal ATLASSIM-6058 ticket. << 
 32                                                << 
 33 ## 2024-04-02 Gabriele Cosmo (field-V11-02-00) << 
 34 - Applied trivial clang-tidy fixes to classes, << 
 35   constructor/destructor, auto and using state << 
 36 - Minor cleanup in QSS classes.                << 
 37                                                << 
 38 ## 2023-11-03 Gabriele Cosmo (field-V11-01-06) << 
 39 - Reinstated default DormandPrince745 stepper. << 
 40                                                << 
 41 ## 2023-10-27 Lucio Santi (field-V11-01-05)    << 
 42 - Improvements on the QSS Stepper              << 
 43   The main QSS integration loop is interrupted << 
 44   exceeds a predefined threshold (set to 1000  << 
 45                                                << 
 46 ## 2023-06-14 Gabriele Cosmo (field-V11-01-04) << 
 47 - Applied clang-tidy fixes (readability, moder << 
 48                                                << 
 49 ## 2023-06-12 John Apostolakis (field-V11-01-0 << 
 50 - Inclusion of QSS integration method.         << 
 51   Most recent changes:                         << 
 52   * Fixes for issue with SetPrecision (used un << 
 53   * Updated values of parameters in G4Propagat << 
 54   * Withdrew interim changes that made QSS the << 
 55                                                << 
 56 ## 2023-05-26 Lucio Santi                      << 
 57 - Fixes for open issues:                       << 
 58   * default values for QSS made stricter dQRel << 
 59     to improve behaviour in full experiment te << 
 60   * implemented missing DistChord method -- ne << 
 61                                                << 
 62 ## 2023-01-31 John Apostolakis                 << 
 63 - Initial inclusion of QSS integration method. << 
 64   Renamed classes to include 'G4' prefix, and  << 
 65   Added Geant4 disclaimer / license to files.  << 
 66   Removed QSSmessenger from RunManager and G4P << 
 67 - Temporarily made QSS the default method for  << 
 68                                                << 
 69 ## 2023-01-30 Rodrigo Castro, Lucio Santi & Le << 
 70 - Included Quantum State Simulation (QSS) inte << 
 71   Alternative method of integration which crea << 
 72   functions for each coordinate (x,p) - changi << 
 73   polynomials when the deviation from exact so << 
 74   a threshold value.                           << 
 75   Offers built-in interpolation capability - e << 
 76   of the intersection of the trajectory with s << 
 77   Currently restricted to using only with a pu << 
 78   Created by Rodrigo Castro and Lucio Santi, w << 
 79   by Leandro A. Gómez Vidal (and others?)     << 
 80                                                << 
 81 ## 2023-03-16 Ben Morgan (field-V11-01-02)     << 
 82 - Fixed compilation warnings on clang-15 for m << 
 83   in input parameters for steppers.            << 
 84                                                << 
 85 ## 2023-01-09 Ben Morgan (field-V11-01-01)     << 
 86 - Use PROJECT_ scoped _SOURCE/BINARY_DIR varia << 
 87   scope version to ease use of Geant4 as a CMa << 
 88   - Fixes [GitHub PR #52](https://github.com/G << 
 89                                                << 
 90 ## 2022-12-09 Laurie Nevay             (field- << 
 91 - Reduced printout for setting any valid value << 
 92   G4FieldManager.                              << 
 93                                                << 
 94 ## 2022-11-28 Gabriele Cosmo           (field- << 
 95 - Fixed restore of stream precision in G4Field << 
 96                                                << 
 97 ## 2022-11-14 John Apostolakis         (field- << 
 98 - Revised G4FieldManager to ensure that epsilo << 
 99   are less than a 'maximum accepted' accuracy  << 
100   behaviour of the integration. Improved their << 
101    - warnings if min > max, with corrective be << 
102    - a fatal exception in case of values outsi << 
103                                                << 
104   To cope with needs of legacy applications or << 
105   the value of the 'ceiling' maximum accepted  << 
106   the new static method                        << 
107        G4FieldManager::SetMaxAcceptedEpsilon(  << 
108   but must remain under or equal to a final ce << 
109        fMaxFinalEpsilon=0.03                   << 
110                                                << 
111 ## 2022-11-10 Gabriele Cosmo (field-V11-00-03) << 
112 - Fixed compilation warnings for implicit type << 
113                                                << 
114 ## 2022-11-05 Divyansh Tiwari, John Apostolaki << 
115                                                << 
116 - Introduced G4BorisScheme and G4BorisDriver,  << 
117   integration method, created as part of GSoC  << 
118                                                << 
119 ## 2022-10-05 Gabriele Cosmo (field-V11-00-01) << 
120 - Fixed compilation warnings on Intel/icx comp << 
121   but not used.                                << 
122                                                << 
123 ## 2021-12-10 Ben Morgan (field-V11-00-00)     << 
124 - Change to new Markdown History format        << 
125                                                << 
126 ---                                            << 
127                                                << 
128 # History entries prior to 11.0                << 
129                                                << 
130 March 30, 2021 B.Morgan                        << 
131 -----------------------                        << 
132 - Migrate sources.cmake to modular build API   << 
133                                                << 
134 November 26, 2020 J.Apostolakis                << 
135 -------------------------------                << 
136 - Fix to enable G4TDormandPrince45 to be used  << 
137                                                << 
138   This fix was needed because G4Interpolation  << 
139   copies of the stepper class.  Due to this it << 
140   with the type of the templated stepper.      << 
141                                                << 
142   For a stepper to be used with 'G4Interpolati << 
143   implement the method                         << 
144      Equation_type  GetSpecificEquation()      << 
145   Templated steppers must ensure that the retu << 
146   is the specific equation type of the templat << 
147                                                << 
148   This method was added to G4DormandPrince745  << 
149                                                << 
150 October 12, 2020 J.Apostolakis                 << 
151 ------------------------------                 << 
152 - Fixes & refinements - mostly in templated cl << 
153   Compilation fixes, e.g. missing include <cas << 
154   Refinements, e.g. int -> unsigned int in tem << 
155                                                << 
156 October 9, 2020 J.Apostolakis                  << 
157 -----------------------------                  << 
158 - Configure G4ChordFinder to use templated G4T << 
159   default stepper for magnetic fields (when on << 
160   explicitly by the application.)              << 
161                                                << 
162 October 9, 2020 J.Apostolakis & J. Xie         << 
163 --------------------------------------         << 
164 - Adapted classes that avoid virtual calls for << 
165   created by Josh Xie (Google Summer of Code 2 << 
166   S. Wenzel & J.A.                             << 
167                                                << 
168   The revised design and implementations inclu << 
169    * equation of motion templated on the field << 
170    * steppers templated on the type of equatio << 
171      variables.                                << 
172   In addition the key methods are marked as 'i << 
173   they judge possible, to embed them and avoid << 
174                                                << 
175   These classes can be combined also with the  << 
176   (G4IntegrationStepper, G4FSALIntegrationStep << 
177   to avoid virtual calls in all the levels up  << 
178   the integration driver. ]                    << 
179                                                << 
180   The types of stepper currently available are << 
181   i) the originally developed intermediate ord << 
182                                                << 
183    - Name (templated) -  original  --   Order/ << 
184                                            / E << 
185    =========================================== << 
186    G4TClassicalRK4:     G4ClassicalRK4   4th / << 
187    G4TCashKarpRKF45:    G4CashKarpRKF45  5th / << 
188                                                << 
189   ii) the original low order steppers (for spe << 
190    G4TSimpleHeum:       G4SimpleHeum     3rd / << 
191    G4TSimpleRunge:      G4SimpleRunge    2nd / << 
192    G4TExplicitEuler:    G4ExplicitEuler  1st / << 
193                                                << 
194   and                                          << 
195   iii) some newly adapted stepper(s) /  ( J.A. << 
196    G4TDormandPrince45  G4DormandPrince745 5th/ << 
197    =========================================== << 
198                                                << 
199   Note: Additional lower-order steppers are no << 
200         'Vector' steppers (using blaze) are no << 
201                                                << 
202   Experimental versions of fields with inline  << 
203      G4TUniformMagField,  G4TQuadrupoleMagFiel << 
204   are included to show how the field evaluatio << 
205                                                << 
206   Note 2:                                      << 
207   Steppers which are not embedded obtain their << 
208   breaking the step into two halves, then comp << 
209   As a result many more field / derivative eva << 
210   embedded steppers of the same order, but the << 
211   estimation has different properties; so it m << 
212                                                << 
213 June 15, 2020 G.Cosmo                          << 
214 ---------------------                          << 
215 - Implemented move constructor and operator fo << 
216                                                << 
217 March 24, 2020 J.Apostolakis                   << 
218 ----------------------------                   << 
219 - New class G4DriverReporter to print progress << 
220    Used for debugging differences between Old  << 
221 - Revisions in testing CMake config file and s << 
222    for magnetic field.                         << 
223                                                << 
224 March 13, 2020 J.Apostolakis                   << 
225 ----------------------------                   << 
226 - G4VIntegrationDriver & dependent driver clas << 
227     Added new virtual StreamInfo() method,     << 
228        & used it to implement operator << for  << 
229     Made (virtual) DoesReIntegrate() const.    << 
230 - G4MagInt_Driver: Fixed max iterations & clar << 
231      ComputeNewStepSize does NOT (yet) respect << 
232   ( Done to enable comparisons with new G4Inte << 
233 - G4OldMagIntDriver maintains all old behaviou << 
234                                                << 
235                                                << 
236 January 22, 2020 G.Cosmo                       << 
237 ------------------------                       << 
238 - Fixed compilation errors and configuration f << 
239                                                << 
240 January 13, 2020 G.Cosmo                       << 
241 ------------------------                       << 
242 - Turn off verbosity flags by default in G4Int << 
243   G4InterpolationDriver and G4MagIntegratorDri << 
244                                                << 
245 December 10, 2019 B.Morgan                     << 
246 --------------------------                     << 
247 - Cleanup CMake build, removing obsolete granu << 
248   explicit include_directories.                << 
249                                                << 
250 November 14, 2019 J.Apostolakis                << 
251 -------------------------------                << 
252 - Added method / attribute to G4VIntegrationDr << 
253    to inform whether the driver recomputes seg << 
254    AccurateAdvance is called.                  << 
255                                                << 
256 October 27, 2019 D.Sorokin                     << 
257 ----------------------------                   << 
258 - Remove statistics printouts from destructor  << 
259                                                << 
260 October 24, 2019 H.Burkhardt                   << 
261 ----------------------------                   << 
262 - Standard sextupole magnet first implementati << 
263                                                << 
264 October 18, 2019 D. Sorokin                    << 
265 -----------------------------------------      << 
266 - Fix floating point exception in G4BFieldInte << 
267                                                << 
268 October 1, 2019 G. Cosmo                       << 
269 -----------------------------------------      << 
270 - Fixed unitialised data in G4EqMagElectricFie << 
271   reported by Coverity.                        << 
272                                                << 
273 September 12, 2019 G. Cosmo                    << 
274 -----------------------------------------      << 
275 - Minor C++11 revision. Code formatting and cl << 
276                                                << 
277 July 8, 2019 D. Sorokin                        << 
278 -----------------------------------------      << 
279 - G4BFieldIntegrationDriver: an attempt to sol << 
280                                                << 
281 July 3, 2019 D. Sorokin                        << 
282 -----------------------------------------      << 
283 - Make G4InterpolationDriver default for perfo << 
284                                                << 
285 June 25, 2019 D. Sorokin                       << 
286 -----------------------------------------      << 
287 - Fix Dormand-Prince 5th order interpolation m << 
288                                                << 
289 June 20, 2019 D. Sorokin                       << 
290 -----------------------------------------      << 
291 - New version of G4InterpolationDriver with mu << 
292                                                << 
293 June 12, 2019 D. Sorokin & J. Apostolakis      << 
294 -----------------------------------------      << 
295 - Revert to use G4IntegrationDriver as default << 
296     ( c-tor for magnetic field. ).             << 
297   Change to use concrete type of Stepper as te << 
298                                                << 
299 June 10, 2019 Dmitry Sorokin                   << 
300 -------------------------                      << 
301 - Remove division in G4DormandPrince745::Inter << 
302                                                << 
303 June 7, 2019 Dmitry Sorokin                    << 
304 -------------------------                      << 
305 - Switch to original chord finding algorithm i << 
306 - Reset step estimate in G4MagInt_Driver only  << 
307 - Change G4VERBOSE to G4FIELD_DEBUG in G4Inter << 
308                                                << 
309 June 4, 2019 Dmitry Sorokin                    << 
310 -------------------------                      << 
311 - Use FSAL property of G4DormandPrince745 in G << 
312                                                << 
313 June 3, 2019 Dmitry Sorokin                    << 
314 -------------------------                      << 
315 - Fix memory churn in G4InterpolationDriver.   << 
316                                                << 
317 May 20, 2019 Dmitry Sorokin                    << 
318 -------------------------                      << 
319 - Make interpolation driver default for immedi << 
320                                                << 
321 April 8, 2019 H.Burkhardt                      << 
322 -------------------------                      << 
323 - Correcting transformation to local system in << 
324                                                << 
325 March 20, 2019 G.Cosmo                         << 
326 ----------------------                         << 
327 - Corrected 'RegularStepperName' in G4ChordFin << 
328   default stepper G4DormandPrince745 rather th << 
329                                                << 
330 November 9, 2018 J.Apostolakis                 << 
331 ------------------------------                 << 
332 - Small fixes for warnings in compilation.     << 
333 - Revisions of descriptions of recent tags (fo << 
334                                                << 
335 September 26, 2018 D.Sorokin                   << 
336 ----------------------------                   << 
337 - Implemented G4InterpolationDriver. This driv << 
338   stepper with interpolation property to integ << 
339   The field evaluations used to calculate the  << 
340   be reused to obtain one or multiple internal << 
341   So in steps in which an intersection is foun << 
342   evaluations are expected to be reduced subst << 
343                                                << 
344 September 13, 2018 D.Sorokin                   << 
345 ----------------------------                   << 
346 - G4NystromRK4 creates G4CachedMagneticField i << 
347 - Removed G4MagIntegratorStepper::ComputeRight << 
348   (all calls now use non-virtual RightHandSide << 
349 - Reversed declaration of final for the class  << 
350   Returned to previous status: only GetFieldVa << 
351   ( This avoid need to change examples/tests a << 
352     users' code. )                             << 
353                                                << 
354 September 12, 2018 D.Sorokin                   << 
355 ----------------------------                   << 
356 - Created new experimental driver G4BFieldInte << 
357   magnetic fields.  In QuickAdvance it uses he << 
358   estimated 'helix' rotation angle is larger t << 
359 - G4NystromRK4 uses G4CachedMagneticField for  << 
360   NOTE: It now the user's responsibility to cr << 
361   ( The alternative is to create G4CachedMagne << 
362     But this would have several disadvantages: << 
363     * It would change the field in the user's  << 
364     * G4NystromRK4 is not able to check whethe << 
365       that changes the equation using SetEquat << 
366                                                << 
367 July 10, 2018 D. Sorokin              - field- << 
368 ------------------------ Tags by J. Apostolaki << 
369 - Corrections in calculation of chord distance << 
370   ( use 4th order interpolation from Shampine  << 
371 - Revised G4FieldUtils: moved copy() method fr << 
372   added 2 new setValue: simple & variadic meth << 
373 - Fixes to copy input time in ModifiedMidpoint << 
374   Bogacki-Shampine 4/5 and 2/3  (note: B-S 2/3 << 
375   Dormand Prince 4/5, 5/6 and 7/8,  and Tsitou << 
376 - Trial revision in G4BulirschStoer to reduce  << 
377   operations (J.A.)                            << 
378 - Fix for unitialised pIntStepper pointer in G << 
379   constructor.  Revision of data member variab << 
380                                                << 
381 June 15, 2018 G.Cosmo                   - fiel << 
382 ---------------------                          << 
383 - Fixed minor Coverity defects in G4BurlischSt << 
384   Code cleanup.                                << 
385                                                << 
386 June 13, 2018 G.Cosmo                   - fiel << 
387 ---------------------                          << 
388 - Leave override final only for clone() method << 
389   not in destructor...                         << 
390                                                << 
391 June 12, 2018 G.Cosmo                   - fiel << 
392 ---------------------                          << 
393 - Use G4Exception warnings instead of streamin << 
394 - Added override final for virtual methods in  << 
395 - Some code cleanup.                           << 
396                                                << 
397 Apr 30, 2018 J. Apostolakis             - fiel << 
398 ---------------------------                    << 
399 - G4VIntegrationDriver and derived classes     << 
400                                                << 
401   Added new virtual method in G4VIntegrationDr << 
402       void RenewStepperAndAdjust(G4MagIntegrat << 
403   which used to exist in G4MagInt_Driver.      << 
404   ( Its absence caused a problem in some exist << 
405                                                << 
406   This method must be defined in those derived << 
407   a Runge Kutta stepper ( i.e. some or any typ << 
408                                                << 
409 - G4IntegrationDriver, G4FSALIntegrationDriver << 
410   Defined default implementation (which throws << 
411   implementations in the templated classes G4I << 
412   G4FSALIntegrationDriver which check the type << 
413   change the stepper if it is appropriate.     << 
414                                                << 
415 Feb 13, 2018 J. Apostolakis             - fiel << 
416 ---------------------------                    << 
417 - Change in G4FieldManager::CreateChordFinder  << 
418   better with case that field argument is null << 
419                                                << 
420 Feb 13, 2018 D. Sorokin                 - fiel << 
421 -----------------------                 - fiel << 
422 - Introduced Bulirsch-Stoer method of integrat << 
423   to Runge-Kutta based on the mid-point method << 
424   Separate driver derived G4VIntegrationDriver << 
425   using specialisation of G4IntegrationDriver  << 
426   Note: this method does not have a RK 'Steppe << 
427                                                << 
428 Jan 31, 2018 J. Apostolakis                    << 
429 ---------------------------                    << 
430 - G4MagneticField no longer inherits from G4El << 
431   This was incorrect, and allowed a user to pr << 
432   field, but obtain the force only from the B- << 
433   the equation created in the G4ChordFinder co << 
434    => potential interface change.              << 
435                                                << 
436   Result: It is no longer possible to use the  << 
437      pure magnetic field for the case of a mix << 
438      This change is desired, and is a *protect << 
439      use led to incorrect results.             << 
440   Instead the full chain of classes for equati << 
441      steppers and driver must be used for the  << 
442                                                << 
443 Feb 9, 2017 G.Cosmo                     - fiel << 
444 -------------------                            << 
445 - Removed static data from G4FSALIntegrationDr << 
446   G4MagIntegratorDriver and moved to base clas << 
447   Fix required for allowing proper symbol expo << 
448                                                    19 
449 Nov 17, 2017 J. Apostolakis             - fiel     20 Nov 17, 2017 J. Apostolakis             - field-V10-03-30
450 ---------------------------                        21 ---------------------------
451 - G4ChordFinder: Reinstated old driver G4MagIn <<  22 - G4ChordFinder: Reinstated old driver G4MagInt_Drv, for use 
452     with G4DormandPrince745 (5th order) in G4C     23     with G4DormandPrince745 (5th order) in G4ChordFinder's
453     2nd constructor (with magnetic field.)         24     2nd constructor (with magnetic field.)
454   ( Reverses change made in field-V10-03-27 )      25   ( Reverses change made in field-V10-03-27 )
455                                                    26 
456 Nov 16, 2017 J. Apostolakis             - fiel     27 Nov 16, 2017 J. Apostolakis             - field-V10-03-29
457 ---------------------------                        28 ---------------------------
458 - Suppressed statistics printing in G4ChordFin     29 - Suppressed statistics printing in G4ChordFinder and new drivers
459    ( G4IntegrationDriver and G4FSALIntegration     30    ( G4IntegrationDriver and G4FSALIntegrationDriver )
460    protecting them by verbosity flags.             31    protecting them by verbosity flags.
461                                                <<  32     
462 - Minor fix to initialise scalar data member i     33 - Minor fix to initialise scalar data member in new steppers
463   G4RK547FEq1, G4RK547FEq2 and G4RK547FEq3.    <<  34   G4RK547FEq1, G4RK547FEq2 and G4RK547FEq3. 
464   Fixes coverity issues 97886, 97888 and 97889     35   Fixes coverity issues 97886, 97888 and 97889.
465                                                    36 
466                                                    37 
467 Nov 14, 2017 J. Apostolakis             - fiel     38 Nov 14, 2017 J. Apostolakis             - field-V10-03-28
468 ---------------------------                        39 ---------------------------
469 - Suppressed extra verbosity in G4ChordFinder.     40 - Suppressed extra verbosity in G4ChordFinder.
470 - Fix in G4FSALDormandPrince745 for unitialise     41 - Fix in G4FSALDormandPrince745 for unitialised variables.
471   Initialise ak8[], ak9[] in constructor. This     42   Initialise ak8[], ak9[] in constructor. This avoids repeated
472   memory allocation, without deletion - i.e. a     43   memory allocation, without deletion - i.e. a memory leak.
473 - Initialise fLastStepLength and/or fAuxSteppe <<  44 - Initialise fLastStepLength and/or fAuxStepper data members in 
474   in constructors of G4DormandPrince745 and G4     45   in constructors of G4DormandPrince745 and G4FSALDormandPrince745.
475   Coverity issues: 67394 (G4FSALDormandPrince7     46   Coverity issues: 67394 (G4FSALDormandPrince745)
476                    67391     (G4DormandPrince7     47                    67391     (G4DormandPrince745)
477                                                    48 
478 Nov 14, 2017 J. Apostolakis             - fiel     49 Nov 14, 2017 J. Apostolakis             - field-V10-03-27 (fixed)
479 ---------------------------             - fiel     50 ---------------------------             - field-V10-03-26
480 - G4ChordFinder: changes in default stepper &      51 - G4ChordFinder: changes in default stepper & driver in 2nd constructor.
481   in which only a magnetic field is provided (     52   in which only a magnetic field is provided (used widely) :
482                                                <<  53   
483   * Reinstated G4DormandPrince745 (5th order)      54   * Reinstated G4DormandPrince745 (5th order) as default in G4ChordFinder.
484    (corrected -23, which missed to initialise      55    (corrected -23, which missed to initialise driver.)
485                                                    56 
486   * New templated driver G4IntegrationDriver i <<  57   * New templated driver G4IntegrationDriver is chosen for the 
487     the simple constuctors of G4ChordFinder an     58     the simple constuctors of G4ChordFinder and G4FieldManager
488     which only require a (pure) magnetic field     59     which only require a (pure) magnetic field. ( Details below.)
489                                                    60 
490   Additional information and details:              61   Additional information and details:
491   * New optional parameter to constructor of G     62   * New optional parameter to constructor of G4ChordFinder which
492     allow to create an FSAL stepper and corres     63     allow to create an FSAL stepper and corresponding driver instead.
493     This aims to reuse some derivatives, thus      64     This aims to reuse some derivatives, thus reducing computations
494     of derivatives and thus field evaluations.     65     of derivatives and thus field evaluations. )
495                                                    66 
496   * The templated 'driver' classes, available  <<  67   * The templated 'driver' classes, available and now chosen in 
497     G4ChordFinder's 2nd constructor, are used      68     G4ChordFinder's 2nd constructor, are used per type of stepper
498     class:                                         69     class:
499      - G4IntegrationDriver      for non-FSAL       70      - G4IntegrationDriver      for non-FSAL     steppers
500      - G4FSALIntegrationDriver  for FSAL-capab     71      - G4FSALIntegrationDriver  for FSAL-capable steppers
501     These make non-virtual calls to the steppe     72     These make non-virtual calls to the stepper, as they know its type.
502                                                    73 
503 - First fix in G4FSALDormandPrince745 for memo <<  74 - First fix in G4FSALDormandPrince745 for memory leak, missing 
504   delete[] fInitialDyDx in destructor. Coverit     75   delete[] fInitialDyDx in destructor. Coverity issue: 96383.
505                                                    76 
506 ----------------------------------------------     77 ----------------------------------------------------------------------
507 Multiple tags (below) were to better test step     78 Multiple tags (below) were to better test stepper/driver combinations:
508 Date   Tagger         Tag name        Stepper      79 Date   Tagger         Tag name        Stepper                Driver
509 ==============================================     80 ======================================================================
510 Nov 3, D. Sorokin     field-V10-03-25 G4FSALBo <<  81 Nov 3, D. Sorokin     field-V10-03-25 G4FSALBogackiShampine45 FSAL 
511 Nov 3, J. Apostolakis field-V10-03-24 G4FSALDo     82 Nov 3, J. Apostolakis field-V10-03-24 G4FSALDormandPrince745  FSAL  ok
512 Nov 2, J. Apostolakis field-V10-03-23 G4Dorman <<  83 Nov 2, J. Apostolakis field-V10-03-23 G4DormandPrince745      new    
513 Nov 2, J. Apostolakis field-V10-03-22 G4RK547F     84 Nov 2, J. Apostolakis field-V10-03-22 G4RK547FEq1             FSAL  ok
514 ----------------------------------------------     85 ----------------------------------------------------------------------
515 Glossary of drivers:                               86 Glossary of drivers:
516    the FSAL driver = using G4FSALIntegrationDr     87    the FSAL driver = using G4FSALIntegrationDriver (templated)
517    the new  driver = using G4IntegrationDriver     88    the new  driver = using G4IntegrationDriver     (templated)
518 ==============================================     89 ===================================================================
519                                                    90 
520 Nov  2, 2017 D. Sorokin                 - fiel     91 Nov  2, 2017 D. Sorokin                 - field-V10-03-21
521 ---------------------------------------            92 ---------------------------------------
522 - Added new steppers G4RK547FEq{1,2,3} which i <<  93 - Added new steppers G4RK547FEq{1,2,3} which implement 7 stage embedded 
523   Runge-Kutta 4,5 pairs with:                      94   Runge-Kutta 4,5 pairs with:
524      - FSAL property (return derivative at end     95      - FSAL property (return derivative at endpoint for use in next step),
525      - stable equilibrium states ( improved ha     96      - stable equilibrium states ( improved handling of difficulties in
526          integration: better stability in choo     97          integration: better stability in choosing step size. )
527   Each one can be used with all existing Runge     98   Each one can be used with all existing Runge-Kutta drivers:
528      - G4FSALIntegrationDriver, using its FSAL     99      - G4FSALIntegrationDriver, using its FSAL property;
529      - G4IntegrationDriver    without its FSAL    100      - G4IntegrationDriver    without its FSAL property.
530      - the original G4MagInt_Driver, also igno    101      - the original G4MagInt_Driver, also ignoring FSAL.
531                                                   102 
532 - Reinstated G4DormandPrince745  ( known widel    103 - Reinstated G4DormandPrince745  ( known widely as DOPRI5 ) as
533   the default RK method in G4ChordFinder for p    104   the default RK method in G4ChordFinder for pure magnetic fields.
534     ( Withdrew G4BogackiShampine45. )  J. Apos    105     ( Withdrew G4BogackiShampine45. )  J. Apostolakis
535                                                << 106   
536 Nov  1, 2017 J. Apostolakis             - fiel    107 Nov  1, 2017 J. Apostolakis             - field-V10-03-20
537 ---------------------------                       108 ---------------------------
538 - Made G4BogackiShampine45 the default RK meth    109 - Made G4BogackiShampine45 the default RK method in G4ChordFinder
539    for pure magnetic fields.                      110    for pure magnetic fields.
540                                                   111 
541 Oct 30, 2017 D. Sorokin/J.Apostolakis   - fiel    112 Oct 30, 2017 D. Sorokin/J.Apostolakis   - field-V10-03-19
542 ---------------------------------------           113 ---------------------------------------
543 - add GetStepper method to G4VIntegrationDrive    114 - add GetStepper method to G4VIntegrationDriver for backward compatibility
544                                                   115 
545 Oct 20, 2017 D. Sorokin                 - fiel    116 Oct 20, 2017 D. Sorokin                 - field-V10-03-18
546 ---------------------------------------           117 ---------------------------------------
547 Introduced base class for any driver algorithm    118 Introduced base class for any driver algorithm (G4VIntegrationDriver)
548 New concrete classes added:                       119 New concrete classes added:
549 - G4IntegrationDriver: implementation of templ    120 - G4IntegrationDriver: implementation of templated driver algorithm
550   for non-fsal explicit Runge-Kutta steppers      121   for non-fsal explicit Runge-Kutta steppers
551 - G4FSALIntegrationDriver: implementation of d    122 - G4FSALIntegrationDriver: implementation of driver algorithm for
552   FSAL explicit Runge-Kutta steppers.             123   FSAL explicit Runge-Kutta steppers.
553 Existing class G4MagInt_Drv remains, deriving     124 Existing class G4MagInt_Drv remains, deriving from base class.
554                                                   125 
555 - Expanded testing in testProElectroMagField (    126 - Expanded testing in testProElectroMagField (higher precision, new driver)
556    ( J. Apostolakis)                              127    ( J. Apostolakis)
557                                                   128 
558 Oct 13, 2017 D. Sorokin                 - fiel    129 Oct 13, 2017 D. Sorokin                 - field-V10-03-17
559 ---------------------------------------           130 ---------------------------------------
560 - add G4FieldUtils.hh, G4FieldUtils.icc, G4Fie << 131 - add G4FieldUtils.hh, G4FieldUtils.icc, G4FieldUtils.cc: 
561   utilities to extract data from arrays in con << 132   utilities to extract data from arrays in conventions of the 
562   magneticfield integration.                      133   magneticfield integration.
563                                                   134 
564 Oct 13, 2017 G. Cosmo                   - fiel    135 Oct 13, 2017 G. Cosmo                   - field-V10-03-16
565 ---------------------------------------           136 ---------------------------------------
566 - G4NystromRK4: use consistenly G4 types for d    137 - G4NystromRK4: use consistenly G4 types for double and bool in G4NystromRK4.
567                                                   138 
568 Aug 31, 2017 J. Apostolakis             - fiel    139 Aug 31, 2017 J. Apostolakis             - field-V10-03-15
569 ---------------------------------------           140 ---------------------------------------
570 - Made G4DormandPrince457 the default Stepper     141 - Made G4DormandPrince457 the default Stepper for magnetic fields in
571   G4ChordFinder - when a driver/stepper is not    142   G4ChordFinder - when a driver/stepper is not specified.
572                                                   143 
573 Aug 31, 2017 J. Apostolakis             - fiel    144 Aug 31, 2017 J. Apostolakis             - field-V10-03-14
574 ---------------------------------------           145 ---------------------------------------
575 - G4NystromRK4: used caching of momentum magni    146 - G4NystromRK4: used caching of momentum magnitude ( & its inverse)
576   to reduce overhead of fix in field-V10-03-10    147   to reduce overhead of fix in field-V10-03-10.
577                                                   148 
578 Aug 25, 2017 J. Apostolakis             - fiel    149 Aug 25, 2017 J. Apostolakis             - field-V10-03-12, 13
579 ---------------------------------------           150 ---------------------------------------
580 - G4MagInt_Driver: added GetEquationOfMotion m    151 - G4MagInt_Driver: added GetEquationOfMotion method for enabling common
581   code with future develoment.                    152   code with future develoment.
582                                                   153 
583 Aug 24, 2017 D.Sorokin & J. Apostolakis - fiel    154 Aug 24, 2017 D.Sorokin & J. Apostolakis - field-V10-03-11
584 ---------------------------------------           155 ---------------------------------------
585 - G4NystromRK4: correction in call to getField    156 - G4NystromRK4: correction in call to getField: needs p[4], not p[3]
586     ( Spotted by D. Sorokin )                     157     ( Spotted by D. Sorokin )
587   Also small cleanup of testing code into 2 sm    158   Also small cleanup of testing code into 2 small new methods.
588     ( J. Apostolakis )                            159     ( J. Apostolakis )
589                                                   160 
590 Aug 23, 2017 J.Apostolakis              - fiel    161 Aug 23, 2017 J.Apostolakis              - field-V10-03-10
591 --------------------------                        162 --------------------------
592 - G4NystromRK4 - Fix the caching of momentum,     163 - G4NystromRK4 - Fix the caching of momentum, field location & value.
593   Fixes issue reported by ALICE ( problem repo    164   Fixes issue reported by ALICE ( problem report #1996 ).
594   Thanks to Ruben Shahoyan for identifying and    165   Thanks to Ruben Shahoyan for identifying and reporting the issue!
595 - Temporarly made G4NystromRK4 the default Ste    166 - Temporarly made G4NystromRK4 the default Stepper in G4ChordFinder's 2nd
596   constructor (to ensure adequate testing).       167   constructor (to ensure adequate testing).
597                                                   168 
598 Jul 04, 2017 J.Apostolakis             - field    169 Jul 04, 2017 J.Apostolakis             - field-V10-03-09
599 --------------------------                        170 --------------------------
600 - G4DormandPrinceRK78: initialise fLastStepLen    171 - G4DormandPrinceRK78: initialise fLastStepLength and/or fAuxStepper data
601   members in constructor. Coverity issue: 6739    172   members in constructor. Coverity issue: 67398,
602   Improved description and reference to origin    173   Improved description and reference to original 1981 DP paper.
603 - G4MagIntegratorDriver: initialised fNoCalls     174 - G4MagIntegratorDriver: initialised fNoCalls in c-tor. Coverity #15158.
604                                                   175 
605 Jul 03, 2017 J.Apostolakis             - field    176 Jul 03, 2017 J.Apostolakis             - field-V10-03-08
606 --------------------------                        177 --------------------------
607 - G4FSALBogackiShampline45: initialise 'bi[][]    178 - G4FSALBogackiShampline45: initialise 'bi[][]' const coefficients only 1 time
608   in method PrepareConstants() called by const    179   in method PrepareConstants() called by constructor.
609     ( Similar to G4BogackiShampine => seek con    180     ( Similar to G4BogackiShampine => seek consolidation )
610   Small fix: initialise fAuxStepper to nullptr    181   Small fix: initialise fAuxStepper to nullptr, if not primary.
611     ( Part of Coverity issue 67394 )              182     ( Part of Coverity issue 67394 )
612 - G4DormandPrinceRK56: fix for significant mem    183 - G4DormandPrinceRK56: fix for significant memory leak of ak10_low buffer
613   space in SetupInterpolate_low(), apparently     184   space in SetupInterpolate_low(), apparently not seen by Coverity
614   because it was initialised in each use, not     185   because it was initialised in each use, not in constructor!
615   Improved initialisation of ak10, 11, 12 (mov    186   Improved initialisation of ak10, 11, 12 (moved to constructor)
616   and fixed small memory leak (added deletion     187   and fixed small memory leak (added deletion in destructor).
617 - G4MagIntegratorStepper: initialise fNoRHSCal    188 - G4MagIntegratorStepper: initialise fNoRHSCalls & fIntegrationOrder in c-tor.
618   ( fIntegrationOrder is not yet used widely -    189   ( fIntegrationOrder is not yet used widely - future migration )
619   Coverity issue 67392.                           190   Coverity issue 67392.
620 - G4VFSALIntegrationStepper: initialise counte    191 - G4VFSALIntegrationStepper: initialise counter in c-tor. Coverity issue 67396.
621 - G4BogackiShampine23: initialised fIsFSAL, fI    192 - G4BogackiShampine23: initialised fIsFSAL, fIntegrationOrder in c-tor.
622   Suppressed obsolete virtual method isFSAL,      193   Suppressed obsolete virtual method isFSAL,
623   Deleted duplicate virtual method 'isFSAL()'.    194   Deleted duplicate virtual method 'isFSAL()'. Non-virtual method IsFSAL()
624   now exists in base class G4MagIntegratorStep    195   now exists in base class G4MagIntegratorStepper.
625   Made copy constructor and equal operator pri    196   Made copy constructor and equal operator private and not unimplemented.
626   Added explanatory comments in source file; c    197   Added explanatory comments in source file; can make this method FSAL easily
627   (it calculates derivative @ endpoint. )         198   (it calculates derivative @ endpoint. )
628 - Several steppers ( G4DoLoMcPriRK34, G4FSALBo    199 - Several steppers ( G4DoLoMcPriRK34, G4FSALBogackiShampine45,
629   G4DormandPrince745, G4BogackiShampine45 ): i    200   G4DormandPrince745, G4BogackiShampine45 ): initialise fLastStepLength and/or
630   fAuxStepper data members in constructor.        201   fAuxStepper data members in constructor.
631   Coverity issues: 67393, 67394, 67391, 67390,    202   Coverity issues: 67393, 67394, 67391, 67390, 67363
632                                                   203 
633 Jul 03, 2017 J.Apostolakis             - field << 204 Jul 03, 2017 J.Apostolakis             - field-V10-03-07
                                                   >> 205 --------------------------
                                                   >> 206 - G4FSALBogackiShampline45: fix for memory leak in Stepper()
                                                   >> 207   ( Coverity issue 67389 )
                                                   >> 208   
                                                   >> 209 Jul 03, 2017 J.Apostolakis             - field-V10-03-06
634 --------------------------                        210 --------------------------
635 - fix for memory leak in Stepper() in two step << 
636      G4FSALBogackiShampline45 ( Coverity issue << 
637      G4FSALDormandPrince745   ( Coverity issue << 
638 - G4BogackiShampline23: fix for memory leak in    211 - G4BogackiShampline23: fix for memory leak in destructor
639     ( Coverity issue 67355 )                   << 212   ( Coverity issue 67355 )
                                                   >> 213 
                                                   >> 214 Jun 30, 2017 J.Apostolakis             - field-V10-03-05
                                                   >> 215 --------------------------
                                                   >> 216 - G4FSALDormandPrince745: fix for memory leak in Stepper()
                                                   >> 217   ( Coverity issue 67397 )
640                                                   218 
641 May 17, 2017 J.Apostolakis             - field    219 May 17, 2017 J.Apostolakis             - field-V10-03-03, -04 (resubmit)
642 --------------------------                        220 --------------------------
643 - G4FieldManager::SetDetectorField                221 - G4FieldManager::SetDetectorField
644   Fixed default of 'fail mode' parameter in    << 222   Fixed default of 'fail mode' parameter in 
645      to 0 (silent) - not 1 which was used for     223      to 0 (silent) - not 1 which was used for debugging.
646   In case of existing G4ChordFinder, use 'max'    224   In case of existing G4ChordFinder, use 'max' (1, failMode) not min.
647                                                   225 
648                                                   226 
649 May 11, 2017 J.Apostolakis             - field    227 May 11, 2017 J.Apostolakis             - field-V10-03-02
650 --------------------------                     << 228 -------------------------- 
651 - Reintroduced changes of field-V10-01-05, 06     229 - Reintroduced changes of field-V10-01-05, 06 and 07  to address
652   issue recalled by ATLAS.                        230   issue recalled by ATLAS.
653 - New fixes/refinements (since field-V10-01-07    231 - New fixes/refinements (since field-V10-01-07)
654   o Extra check for missing equation. (Fix)       232   o Extra check for missing equation. (Fix)
655   o Renamed G4FieldManager::SetFieldChangesEne    233   o Renamed G4FieldManager::SetFieldChangesEnergy() method to
656     InitialiseFieldChangesEnergy() to clarify     234     InitialiseFieldChangesEnergy() to clarify its utility.
657 - Original functionality change (copied from f    235 - Original functionality change (copied from field-V10-01-05, & -07) :
658   o G4FieldManager.cc : Revised behaviour of S    236   o G4FieldManager.cc : Revised behaviour of SetDetector - it now
659     passes the Field to the Equation, as is th    237     passes the Field to the Equation, as is the natural user expectation
660     The previous behaviour is possible, using     238     The previous behaviour is possible, using extra argument 'failMode' flag.
661             Values: 0           = silent ;     << 239             Values: 0           = silent ; 
662                     1 (default) = warning;     << 240                     1 (default) = warning; 
663                     2 or other  = fatal except    241                     2 or other  = fatal exception.
664                                                   242 
665     This change is to ensure that user expecta << 243     This change is to ensure that user expectation is met: 
666     if the field is changed for an existing, w << 244     if the field is changed for an existing, working stepper it must 
667     be propagated to the equation of motion.      245     be propagated to the equation of motion.
668     Note: this causes potential conflict betwe    246     Note: this causes potential conflict between the type of the equation
669           and the field, which will need to be    247           and the field, which will need to be solved in the future.
670     Old behaviour (just set our own pointer) i    248     Old behaviour (just set our own pointer) is still available in new method:
671     ProposeDetectorField(G4Field *detectorFiel << 249     ProposeDetectorField(G4Field *detectorField) 
672     Note: Error reporting behaviour of SetDete << 250     Note: Error reporting behaviour of SetDetector is 'soft'. It does not 
673           complain by default if ChordFinder i    251           complain by default if ChordFinder is not (yet) set.
674           ( The default values of failMode = 0    252           ( The default values of failMode = 0 i.e. quiet. )
675     If a chord-finder exists, it will still wa    253     If a chord-finder exists, it will still warn for other errors.
676     To obtain have noisy extra checks call Set    254     To obtain have noisy extra checks call SetDetectorField with failMode > 0
677     or by using the new method for an existing    255     or by using the new method for an existing field:
678     ChangeDetectorField(G4Field *detectorField << 256     ChangeDetectorField(G4Field *detectorField)    
679   OLD: Co-works and requires new tag in geomet    257   OLD: Co-works and requires new tag in geometry/navigation: geomnav-V10-01-24.
680                                                   258 
681 Mar  22, 2017 G.Cosmo                   - fiel    259 Mar  22, 2017 G.Cosmo                   - field-V10-03-01
682 ---------------------                             260 ---------------------
683 - Revert change made in previous tag and add s    261 - Revert change made in previous tag and add simple accessor to return
684   singleton pointer.                              262   singleton pointer.
685                                                   263 
686 Mar  17, 2017 G.Cosmo                   - fiel    264 Mar  17, 2017 G.Cosmo                   - field-V10-03-00
687 ---------------------                             265 ---------------------
688 - Define G4FieldManagerStore as normal singlet    266 - Define G4FieldManagerStore as normal singleton and corrected destructor.
689                                                   267 
690 Oct   7, 2016 J.Apostolakis             - fiel    268 Oct   7, 2016 J.Apostolakis             - field-V10-02-24, 25
691 ---------------------------                       269 ---------------------------
692 - Checked loops for termination for infinite l << 270 - Checked loops for termination for infinite loops and annotated 
693    them with "Loop checking" comment              271    them with "Loop checking" comment
694                                                   272 
695 Oct   7, 2016 D.Sorokin                 - fiel    273 Oct   7, 2016 D.Sorokin                 - field-V10-02-23
696 -----------------------  Commit: J. Apostolaki    274 -----------------------  Commit: J. Apostolakis
697 - Protection for multiple inclusion of G4Class << 275 - Protection for multiple inclusion of G4ClassicalRK4 
698    (thanks to Dmitrii Sorokin, GSoC 2016 stude    276    (thanks to Dmitrii Sorokin, GSoC 2016 student. )
699                                                   277 
700 Aug  16, 2016 J.Apostolakis             - fiel    278 Aug  16, 2016 J.Apostolakis             - field-V10-02-22
701 ---------------------------                       279 ---------------------------
702 - Added initialization of fAuxStepper in const << 280 - Added initialization of fAuxStepper in constructor of 
703   G4DoLoMcPriRK34, G4DormandPrince745 & G4Dorm    281   G4DoLoMcPriRK34, G4DormandPrince745 & G4DormandPrinceRK56.
704                                                   282 
705 June 11, 2016 J.Apostolakis             - fiel    283 June 11, 2016 J.Apostolakis             - field-V10-02-21
706 ---------------------------                       284 ---------------------------
707 - Restored G4ClassicalRK4 as default stepper f    285 - Restored G4ClassicalRK4 as default stepper for B-field,
708   (due to performance issues reported in bench    286   (due to performance issues reported in benchmarking.)
709                                                << 287     
710 June 10, 2016 G.Cosmo                   - fiel    288 June 10, 2016 G.Cosmo                   - field-V10-02-20
711 ---------------------                             289 ---------------------
712 - Fixed code indentation in G4HelixMixedSteppe    290 - Fixed code indentation in G4HelixMixedStepper;
713   fixes compilation warnings on gcc-6.1.          291   fixes compilation warnings on gcc-6.1.
714                                                   292 
715 June 1, 2016 J.Apostolakis              - fiel    293 June 1, 2016 J.Apostolakis              - field-V10-02-19, 18, 17
716 --------------------------                        294 --------------------------
717 - Fix in multiple steppers for the size of two    295 - Fix in multiple steppers for the size of two C-arrays which hold
718   intermediate values;  they must be at least     296   intermediate values;  they must be at least 8 and at least
719   'fNumberOfStateVariables' long.              << 297   'fNumberOfStateVariables' long.  
720   Changed: G4CashKarp,                         << 298   Changed: G4CashKarp, 
721            G4BogackiShampine 23 & 34              299            G4BogackiShampine 23 & 34
722            G4DormandPrince 745, RK56 & RK78       300            G4DormandPrince 745, RK56 & RK78
723      G4DoLoMcPriRK34                              301      G4DoLoMcPriRK34
724            G4FSALBogackiShampine45, G4FSALDorm    302            G4FSALBogackiShampine45, G4FSALDormandPrince745
725 - Made G4CashKarp the default stepper in G4Cho    303 - Made G4CashKarp the default stepper in G4ChordFinder.
726 - Deleted trial class G4NewChordFinder.           304 - Deleted trial class G4NewChordFinder.
727                                                   305 
728 June 1, 2016 J.Apostolakis              - fiel    306 June 1, 2016 J.Apostolakis              - field-V10-02-16
729 --------------------------                        307 --------------------------
730 - Deleted test code (RkTestRun) due to cmake i    308 - Deleted test code (RkTestRun) due to cmake issues
731                                                   309 
732 June 1, 2016 J.Apostolakis              - fiel    310 June 1, 2016 J.Apostolakis              - field-V10-02-15 (also -14)
733 --------------------------                        311 --------------------------
734 - Made G4ClassicalRK4 the default stepper agai    312 - Made G4ClassicalRK4 the default stepper again in G4ChordFinder
735 - Fixes in test code (RkTestRun) for new names    313 - Fixes in test code (RkTestRun) for new names of classes.
736                                                << 314      
737 May 31, 2016 J.Apostolakis              - fiel    315 May 31, 2016 J.Apostolakis              - field-V10-02-13 (also -12)
738 --------------------------                        316 --------------------------
739 - New class G4NewChordFinder, that uses old G4    317 - New class G4NewChordFinder, that uses old G4MagIntegratorDriver or
740     the newer G4FSALIntegratorDriver -- first     318     the newer G4FSALIntegratorDriver -- first try, for testing FSAL.
741   Created new test testNewChordFinder.cc to ch    319   Created new test testNewChordFinder.cc to checks this.
742                                                   320 
743 - Renamed new Stepper classes to use 'G4' pref    321 - Renamed new Stepper classes to use 'G4' prefix, including
744     DormandPrince{745,RK56,RK67} TsitourasRK45    322     DormandPrince{745,RK56,RK67} TsitourasRK45 and DoLoMcPriRK34
745                                                   323 
746 - Renamed FSAL base classes to use 'G4' prefix    324 - Renamed FSAL base classes to use 'G4' prefix & 'Integrat-ion'
747      FSALMagIntegratorStepper to G4VFSALIntegr    325      FSALMagIntegratorStepper to G4VFSALIntegrationStepper
748      FSALIntegratorDriver     to  G4FSALIntegr    326      FSALIntegratorDriver     to  G4FSALIntegrationDriver
749   and the experimental FSAL versions of steppe    327   and the experimental FSAL versions of steppers,
750      FBogackiShampine45.hh  to  G4FSALBogackiS    328      FBogackiShampine45.hh  to  G4FSALBogackiShampine45.hh
751      FDormandPrince745.hh   to  G4FSALDormandP    329      FDormandPrince745.hh   to  G4FSALDormandPrince745.hh
752 ( Note: FSAL steppers remain 'behind' the impr    330 ( Note: FSAL steppers remain 'behind' the improved non-FSAL versions.)
753                                                   331 
754 - Made DormandPrince745 (DP45) the default ste    332 - Made DormandPrince745 (DP45) the default stepper (in G4ChordFinder).
755                                                << 333     
756 May 26, 2016 J.Apostolakis & Som. Banerjee   -    334 May 26, 2016 J.Apostolakis & Som. Banerjee   - field-V10-02-11
757 ------------------------------------------        335 ------------------------------------------
758 - First version of FSAL classes (as additional    336 - First version of FSAL classes (as additional classes)
759     FSAL Integrator Driver  : New *concrete*,  << 337     FSAL Integrator Driver  : New *concrete*, stand-alone driver 
760     FSAL Integrator Stepper : New base class (    338     FSAL Integrator Stepper : New base class (separate from G4MagIntegratorStepper)
761     FBogackiShampine45:  FSAL-version of Bogac    339     FBogackiShampine45:  FSAL-version of BogackiShampine45 stepper
762     FDormandPrince745:   FSAL-version of FDorm    340     FDormandPrince745:   FSAL-version of FDormandPrince745 stepper
763   Developed by Somnath Banerjee in GSoC 2015      341   Developed by Somnath Banerjee in GSoC 2015
764                                                   342 
765 Context:                                          343 Context:
766 * FSAL Stepper's key 'Stepper()' method for St    344 * FSAL Stepper's key 'Stepper()' method for Stepping has additional
767     argument to return the derivative at the e    345     argument to return the derivative at the end of a step.
768     If the step was successful, this estimate     346     If the step was successful, this estimate has the same order of
769     accuracy as the stepper (i.e. 5th order fo    347     accuracy as the stepper (i.e. 5th order for a 5th order stepper.)
770                                                   348 
771 - FSAL Driver method uses the revised Stepper     349 - FSAL Driver method uses the revised Stepper interface, using
772     the final (endpoint) derivative for succes    350     the final (endpoint) derivative for successful steps
773     as the start derivative for the next step,    351     as the start derivative for the next step, in case of
774     continuing of integration.                    352     continuing of integration.
775                                                   353 
776 - New test (RkTestRun.cc) covering FSAL method    354 - New test (RkTestRun.cc) covering FSAL methods, integration
777    Developed by Somnath Banerjee in GSoC 2015     355    Developed by Somnath Banerjee in GSoC 2015
778                                                   356 
779 May 26, 2016 J.Apostolakis                   -    357 May 26, 2016 J.Apostolakis                   - field-V10-02-10
780 --------------------------                        358 --------------------------
781 Preparation for addition of FSAL steppers (& d    359 Preparation for addition of FSAL steppers (& driver)
782 - G4MagIntegratorStepper: Added counter for ca << 360 - G4MagIntegratorStepper: Added counter for calls to equation RHS, 
783     with Get/Reset methods.                       361     with Get/Reset methods.
784 - Cosmetic fixes in sources.cmake (tabs to spa    362 - Cosmetic fixes in sources.cmake (tabs to spaces)
785                                                   363 
786 May 25, 2016 J.Apostolakis & Som. Banerjee   -    364 May 25, 2016 J.Apostolakis & Som. Banerjee   - field-V10-02-09
787 ------------------------------------------        365 ------------------------------------------
788 - Added new stepper classes embedded RK method    366 - Added new stepper classes embedded RK method:
789   * DoLoMcPriRK34,      6-stage 3/4 RK (interp    367   * DoLoMcPriRK34,      6-stage 3/4 RK (interpolation)
790   * DormandPrinceRK56,  9-stage 5/6 RK (interp    368   * DormandPrinceRK56,  9-stage 5/6 RK (interpolation, FSAL-able) "6(5)"
791   * DormandPrinceRK78, 13-stage 7/8 RK (interp    369   * DormandPrinceRK78, 13-stage 7/8 RK (interpolation)        "8(7) 13M"
792   created by Somnath Banerjee as part of GSoC     370   created by Somnath Banerjee as part of GSoC 2015.
793                                                   371 
794 May 25, 2016 J.Apostolakis             - field    372 May 25, 2016 J.Apostolakis             - field-V10-02-08
795 --------------------------                        373 --------------------------
796 - Revised testPropagateMagField, to reduce err    374 - Revised testPropagateMagField, to reduce error severity for over-long
797     steps.  An error message is still written     375     steps.  An error message is still written if move > (1.+1.0e-9) * step,
798     but test does not stop.                       376     but test does not stop.
799                                                   377 
800 - G4HelixMixedStepper: Fixes & added new (5th     378 - G4HelixMixedStepper: Fixes & added new (5th order) stepper choices.
801     Included (G4)Bogacki-Shampine 23/45 ,  Dor    379     Included (G4)Bogacki-Shampine 23/45 ,  DormandPrince745,
802     and newest TsitourasRK45.                     380     and newest TsitourasRK45.
803                                                   381 
804 May 24, 2016 J.Apostolakis             - field    382 May 24, 2016 J.Apostolakis             - field-V10-02-06, 07
805 --------------------------                        383 --------------------------
806 - Added TsitourasRK45 stepper.                    384 - Added TsitourasRK45 stepper.
807 - Made Cash-Karp the default stepper (in G4Cho    385 - Made Cash-Karp the default stepper (in G4ChordFinder).
808                                                << 386     
809 May 23, 2016 J.Apostolakis             - field    387 May 23, 2016 J.Apostolakis             - field-V10-02-05
810 --------------------------                        388 --------------------------
811 - Made DormandPrince745 (DP45) the default ste    389 - Made DormandPrince745 (DP45) the default stepper (in G4ChordFinder).
812                                                << 390     
813 May 20, 2016 J.Apostolakis             - field    391 May 20, 2016 J.Apostolakis             - field-V10-02-04
814 -------------------------                         392 -------------------------
815 - Added steppers created by Somnath Banerjee a    393 - Added steppers created by Somnath Banerjee as part of GSoC 2015,
816     G4BogackiShampine23 (BS23 below), G4Bogack    394     G4BogackiShampine23 (BS23 below), G4BogackiShampine45 (BS45) and
817     DormandPrince745 (DP45).                      395     DormandPrince745 (DP45).
818   These implement third order (BS23) and fifth    396   These implement third order (BS23) and fifth order (BS45, DP45)
819     embedded RK tableaus.                         397     embedded RK tableaus.
820 - DP45 includes interpolation method, to evalu    398 - DP45 includes interpolation method, to evaluate the interpolant
821     ('y') at intermediate points of a successf    399     ('y') at intermediate points of a successful step.
822   BS45's interpolation method exists, but is n    400   BS45's interpolation method exists, but is not validated (fails).
823                                                   401 
824  References:                                      402  References:
825   - BS45 is embedded pair from paper by P. Bog    403   - BS45 is embedded pair from paper by P. Bogacki and L. F. Shampine:
826       “An efficient Runge-Kutta (4,5) pair,    404       “An efficient Runge-Kutta (4,5) pair,”
827       Comput. Math. with Appl., vol. 32, no. 6    405       Comput. Math. with Appl., vol. 32, no. 6, pp. 15–28, Sep. 1996.
828   - BS23 is four stage RK method from the pape    406   - BS23 is four stage RK method from the paper of P. Bogacki and L. F. Shampine,
829       “A 3(2) pair of Runge - Kutta formulas << 407       “A 3(2) pair of Runge - Kutta formulas,” 
830       Appl. Math. Lett., vol 2, no 4, p.321 (1    408       Appl. Math. Lett., vol 2, no 4, p.321 (1989).
831   - DP45 are from Table 2 of  J. R. Dormand an << 409   - DP45 are from Table 2 of  J. R. Dormand and P. J. Prince's 
832       “A family of embedded Runge-Kutta form    410       “A family of embedded Runge-Kutta formulae,”
833       Journal of comput. and applied Math., vo << 411       Journal of comput. and applied Math., vol. 6, no. 1, pp. 19–26, 1980.    
834                                                   412 
835 May 4, 2016 G.Cosmo                   - field-    413 May 4, 2016 G.Cosmo                   - field-V10-02-03
836 -------------------                               414 -------------------
837 - Fixed Clone() signatures in derived Field cl    415 - Fixed Clone() signatures in derived Field classes.
838   More corrections on implementations of opera    416   More corrections on implementations of operator=() and copy-ctors.
839                                                   417 
840 Apr 29, 2016 G.Cosmo                  - field-    418 Apr 29, 2016 G.Cosmo                  - field-V10-02-02
841 --------------------                              419 --------------------
842 - Corrected implementation of operator=() and     420 - Corrected implementation of operator=() and copy-ctor for G4Field,
843   G4ElectroMagneticField, G4ElectricField and     421   G4ElectroMagneticField, G4ElectricField and G4CachedMagneticField.
844                                                   422 
845 Feb 25, 2016 P.Gumplinger             - field-    423 Feb 25, 2016 P.Gumplinger             - field-V10-02-01
846 -------------------------                         424 -------------------------
847 - address Problem Report: 1831                    425 - address Problem Report: 1831
848   change: G4Mag_SpinEqRhs, G4EqEMFieldWithSpin    426   change: G4Mag_SpinEqRhs, G4EqEMFieldWithSpin, G4EqEMFieldWithEDM and
849           G4RepleteEofM.cc from g_BMT = (magMo    427           G4RepleteEofM.cc from g_BMT = (magMoment/muB)/spin
850                            to   g_BMT = (std::    428                            to   g_BMT = (std::abs(magMoment)/muB)/spin
851                                                   429 
852                                                   430 
853 Dec 11, 2015 A.Dotti          - field-V10-02-0    431 Dec 11, 2015 A.Dotti          - field-V10-02-00
854 --------------------------                        432 --------------------------
855 Fixing typo in tests/CMakeList.txt file: subdi << 433 Fixing typo in tests/CMakeList.txt file: subdirecotry() 
856 instead of add_subdirectory()                     434 instead of add_subdirectory()
857                                                   435 
858 Nov  2, 2015 J.Apostolakis             - field    436 Nov  2, 2015 J.Apostolakis             - field-V10-01-15 (fixed)
859 Oct 22, 2015 J.Apostolakis             - field    437 Oct 22, 2015 J.Apostolakis             - field-V10-01-14
860 --------------------------                        438 --------------------------
861 - Reverted changes in G4FieldManager from  tag    439 - Reverted changes in G4FieldManager from  tags field-V10-01-05 to -07
862    inadvertently reintroduced in tag field-V10    440    inadvertently reintroduced in tag field-V10-01-13
863     (fixed in tag -15: committed new copy from    441     (fixed in tag -15: committed new copy from tag -04 'on top')
864                                                << 442     
865 - Added explanation comment in G4MagHelicalSte    443 - Added explanation comment in G4MagHelicalSteper.
866                                                << 444     
867 Oct 13, 2015 J.Apostolakis             - field    445 Oct 13, 2015 J.Apostolakis             - field-V10-01-13
868 --------------------------                        446 --------------------------
869 - G4ChordFinder::FindNextChord: Added check ag << 447 - G4ChordFinder::FindNextChord: Added check against number of iterations, 
870   to identify potential issue of lack of conve    448   to identify potential issue of lack of convergence.
871 - test: fixed testProElectricMagField.cc          449 - test: fixed testProElectricMagField.cc
872                                                   450 
873 - Note: tag-13 inadvertently reintroduced chan    451 - Note: tag-13 inadvertently reintroduced changes from tags field-V10-01-05 to -07
874                                                   452 
875 Jun 26, 2015 P.Gumplinger              - field    453 Jun 26, 2015 P.Gumplinger              - field-V10-01-12, 11
876 -------------------------                         454 -------------------------
877 - Include 'NumberOfVariables' in G4RepleteEofM    455 - Include 'NumberOfVariables' in G4RepleteEofM constructor argument list.
878                                                   456 
879 Jun 22, 2015 G.Cosmo                   - field    457 Jun 22, 2015 G.Cosmo                   - field-V10-01-10
880 --------------------                              458 --------------------
881 - Withdrawn also changes introduced in tag "fi    459 - Withdrawn also changes introduced in tag "field-V10-01-08", as
882   responsible for memory violation errors in V    460   responsible for memory violation errors in Valgrind.
883   Now corresponding to tag "field-V10-01-04".     461   Now corresponding to tag "field-V10-01-04".
884                                                   462 
885 Jun 18, 2015 G.Cosmo                   - field    463 Jun 18, 2015 G.Cosmo                   - field-V10-01-09
886 --------------------                              464 --------------------
887 - Withdrawn changes introduced from tag "field    465 - Withdrawn changes introduced from tag "field-V10-01-05" to tag
888   "field-V10-01-07" included, responsible for     466   "field-V10-01-07" included, responsible for failures on SLC6 and
889   run-time errors on Valgrind checks.             467   run-time errors on Valgrind checks.
890                                                   468 
891 Jun 10, 2015 P.Gumplinger              - field    469 Jun 10, 2015 P.Gumplinger              - field-V10-01-08
892 -------------------------                         470 -------------------------
893 - initialize all elements of dydx[] in G4Reple    471 - initialize all elements of dydx[] in G4RepleteEofM::EvaluateRhsGivenB
894   Thanks to Tatsuya Kikawa (Osaka Univ.)          472   Thanks to Tatsuya Kikawa (Osaka Univ.)
895                                                   473 
896 Jun 10, 2015 J.Apostolakis             - field    474 Jun 10, 2015 J.Apostolakis             - field-V10-01-07
897 --------------------------                        475 --------------------------
898 - G4FieldManager.cc : Made behaviour of SetDet    476 - G4FieldManager.cc : Made behaviour of SetDetector 'softer'.  No
899    longer complains by default if ChordFinder     477    longer complains by default if ChordFinder is not (yet) set.
900     ( The default values of failMode = 0 i.e.     478     ( The default values of failMode = 0 i.e. quiet. )
901    If a chord-finder exists, it will still war    479    If a chord-finder exists, it will still warn for other errors.
902                                                << 480    
903    It is still possible to have louder/extra c    481    It is still possible to have louder/extra checks done calling
904      SetDetectorField with failMode > 0           482      SetDetectorField with failMode > 0
905    or by using a new method, which expects an     483    or by using a new method, which expects an existing field:
906      ChangeDetectorField(G4Field *detectorFiel << 484      ChangeDetectorField(G4Field *detectorField)    
907                                                   485 
908 Jun  8, 2015 J.Apostolakis             - field    486 Jun  8, 2015 J.Apostolakis             - field-V10-01-05, (-06 fixed)
909 --------------------------                        487 --------------------------
910 - G4FieldManager.cc : Revised behaviour of Set    488 - G4FieldManager.cc : Revised behaviour of SetDetector - it now
911    passes the Field to the Equation, as is the    489    passes the Field to the Equation, as is the natural user expectation
912    The previous behaviour is possible, using e << 490    The previous behaviour is possible, using extra argument 'failMode' 
913       flag. Values: 0           = silent ;     << 491       flag. Values: 0           = silent ; 
914                     1 (default) = warning;     << 492                     1 (default) = warning; 
915                     2 or other  = fatal except    493                     2 or other  = fatal exception.
916    Or can use alternative (new) suggestion met    494    Or can use alternative (new) suggestion method ProposeDetectorField();
917                                                   495 
918    This change is to ensure that user expectat << 496    This change is to ensure that user expectation is met: 
919       if the field is changed for an existing, << 497       if the field is changed for an existing, working stepper it must 
920       be propagated to the equation of motion.    498       be propagated to the equation of motion.
921    Note: this causes potential conflict betwee    499    Note: this causes potential conflict between the type of the equation
922          and the field, which will need to be     500          and the field, which will need to be solved in the future.
923                                                   501 
924    Old behaviour (just set our own pointer) is    502    Old behaviour (just set our own pointer) is still available in new method:
925      ProposeDetectorField(G4Field *detectorFie << 503      ProposeDetectorField(G4Field *detectorField) 
926                                                   504 
927    Co-works and requires new tag in geometry/n    505    Co-works and requires new tag in geometry/navigation: geomnav-V10-01-24.
928                                                   506 
929 Jun 4, 2015 P. Gumplinger              - field    507 Jun 4, 2015 P. Gumplinger              - field-V10-01-04
930 -------------------------                         508 -------------------------
931 - change assignment to field instead of Field     509 - change assignment to field instead of Field array in G4RepleteEofM.cc
932                                                   510 
933 Jan 28, 2015 J.Apostolakis             - field    511 Jan 28, 2015 J.Apostolakis             - field-V10-01-01 (-02,03 fixed)
934 --------------------------                        512 --------------------------                               ( History    )
935 - Revert unintended inclusion of changes in G4    513 - Revert unintended inclusion of changes in G4MagIntegratorDriver
936                                                   514 
937 Jan 15, 2015 J.Apostolakis             - field << 515 Jan 15, 2015 J.Apostolakis             - field-V10-01-00 
938 --------------------------                        516 --------------------------
939 - Small refinements in G4FieldTrack - access r    517 - Small refinements in G4FieldTrack - access rest mass, avoid div by 0
940     Avoid division by zero for Unit direction  << 518     Avoid division by zero for Unit direction in FieldTrack 
941     Added method to get Rest Mass.                519     Added method to get Rest Mass.
942   Needed for fixes related to Problem report 1    520   Needed for fixes related to Problem report 1696.
943   Thanks to Nathan S. Froemming <nfroemm@uw.ed    521   Thanks to Nathan S. Froemming <nfroemm@uw.edu> who reported the issue
944    and created dedicated test to demonstrate i    522    and created dedicated test to demonstrate it.
945                                                   523 
946 Nov 03, 2014 G.Cosmo                   - field    524 Nov 03, 2014 G.Cosmo                   - field-V10-00-04
947 --------------------                              525 --------------------
948 - Moved constructors and simple methods to in     526 - Moved constructors and simple methods to in line in G4ChargeState and
949   G4LineSection for CPU speedup (courtesy of S    527   G4LineSection for CPU speedup (courtesy of S.Wenzel).
950                                                   528 
951 May 21, 2014 J.Apostolakis             - field    529 May 21, 2014 J.Apostolakis             - field-V10-00-03
952 --------------------------                        530 --------------------------
953 - G4FieldTrack:                                   531 - G4FieldTrack:
954   * Fixed SetChargeAndMoments() to use the new    532   * Fixed SetChargeAndMoments() to use the new method
955     G4ChargeState::SetChargesAndMoments(); it     533     G4ChargeState::SetChargesAndMoments(); it was changing spin, because of
956     erroneous change in G4ChargeState::SetChar    534     erroneous change in G4ChargeState::SetChargesAndMoments(), that method
957     is now renamed SetChargeSpinMoments() to s    535     is now renamed SetChargeSpinMoments() to show what it does;
958   * Added pdg-spin as argument to constructors    536   * Added pdg-spin as argument to constructors (needed to track polarization);
959   * Renamed 'spin' to 'Polarization' in method    537   * Renamed 'spin' to 'Polarization' in method, arguments, data member to
960     avoid confusion;                              538     avoid confusion;
961   * Revised constructors to add pdg-spin as la    539   * Revised constructors to add pdg-spin as last argument (with default -1).
962 - G4ChargeState:                                  540 - G4ChargeState:
963   - Addressed Coverity issue #56281 'Arguments << 541   - Addressed Coverity issue #56281 'Arguments in wrong order'  
964     G4ChargeState::SetChargeMoments() when use    542     G4ChargeState::SetChargeMoments() when used in
965     G4FieldTrack::SetChargeMoments() from addi    543     G4FieldTrack::SetChargeMoments() from addition of spin to arguments,
966     without revising name of method to reflect    544     without revising name of method to reflect it;
967   - Changed order of arguments in constructor,    545   - Changed order of arguments in constructor, making spin 3rd argument
968     (was 2nd) and making all arguments mandato    546     (was 2nd) and making all arguments mandatory;
969   - Renamed SetChargeAndMoments() method with     547   - Renamed SetChargeAndMoments() method with 5 arguments including spin (2nd)
970     to SetChargeSpinMoments();                    548     to SetChargeSpinMoments();
971   - Added new methods including SetChargesAndM    549   - Added new methods including SetChargesAndMoments(), SetChargeMdm(),
972     SetChargeDipoleMoments() (no spin), and al    550     SetChargeDipoleMoments() (no spin), and also SetChargeSpin(),
973     SetChargeMdmSpin() (which includes spin) t << 551     SetChargeMdmSpin() (which includes spin) to provide most/all potential 
974     combinations.                                 552     combinations.
975 - G4MagIntegratorDriver::OneGoodStep():           553 - G4MagIntegratorDriver::OneGoodStep():
976   * Trial changes to address Valgrind issue, a    554   * Trial changes to address Valgrind issue, about value used before being set.
977                                                   555 
978 Apr 01, 2014 J.Apostolakis                - fi    556 Apr 01, 2014 J.Apostolakis                - field-V10-00-02
979 --------------------------                        557 --------------------------
980 - Moved G4FieldTrack::LoadFromArray() to .cc a    558 - Moved G4FieldTrack::LoadFromArray() to .cc and removed non-necessary
981   thread-local static data local to the functi    559   thread-local static data local to the function.
982                                                   560 
983 Mar 14, 2014 J.Apostolakis                - fi    561 Mar 14, 2014 J.Apostolakis                - field-V10-00-01
984 --------------------------                        562 --------------------------
985 - Fix assignment operator for G4FieldTrack. (C    563 - Fix assignment operator for G4FieldTrack. (Copied Rest Mass)
986 - Improve printing of G4FieldTrack                564 - Improve printing of G4FieldTrack
987                                                   565 
988 Jan 17, 2014 P.Gumplinger                 - fi    566 Jan 17, 2014 P.Gumplinger                 - field-V10-00-00
989 -------------------------                         567 -------------------------
990 - add G4Mag_EqRhs::SetChargeMomentumMass( part    568 - add G4Mag_EqRhs::SetChargeMomentumMass( particleCharge, MomentumXc, mass)
991   to G4Mag_SpinEqRhs::SetChargeMomentumMass, s    569   to G4Mag_SpinEqRhs::SetChargeMomentumMass, see bug reported at:
992   http://hypernews.slac.stanford.edu/HyperNews    570   http://hypernews.slac.stanford.edu/HyperNews/geant4/get/emfields/210.html
993                                                   571 
994 Nov 18, 2013 P.Gumplinger                 - fi    572 Nov 18, 2013 P.Gumplinger                 - field-V09-06-13/12
995 -------------------------                         573 -------------------------
996 - fix Coverity warning in G4RepleteEofM           574 - fix Coverity warning in G4RepleteEofM
997                                                   575 
998 Nov 17, 2013 J.Apostolakis                     << 576 Nov 17, 2013 J.Apostolakis                
999 --------------------------                        577 --------------------------
1000 - Fixed and improved HelixMixed Stepper:         578 - Fixed and improved HelixMixed Stepper:
1001     Corrected the default stepper for small s    579     Corrected the default stepper for small steps to be ClassicalRK4.
1002     Added Angle-threshold parameter. (Default    580     Added Angle-threshold parameter. (Default remains 0.33 radians.)
1003     Added more Steppers, including G4NystromR    581     Added more Steppers, including G4NystromRK4.
1004     Revised Id numbers of Steppers, to make t    582     Revised Id numbers of Steppers, to make the best more visible.
1005     More comments in Stepper().                  583     More comments in Stepper().
1006                                                  584 
1007 Nov 05, 2013 P.Gumplinger                 - f    585 Nov 05, 2013 P.Gumplinger                 - field-V09-06-11
1008 -------------------------                        586 -------------------------
1009 - remove writing out-of-bounds dydx[8] = 0. i    587 - remove writing out-of-bounds dydx[8] = 0. in G4RepleteEofM.cc
1010                                                  588 
1011 Nov 04, 2013 P.Gumplinger                 - f    589 Nov 04, 2013 P.Gumplinger                 - field-V09-06-10
1012 -------------------------                        590 -------------------------
1013 - add G4RepleteEofM to sources.cmake             591 - add G4RepleteEofM to sources.cmake
1014                                             f    592                                             field-V09-06-09 - same as
1015 Nov 01st, 2013 P.Gumplinger               - f    593 Nov 01st, 2013 P.Gumplinger               - field-V09-06-08
1016 ---------------------------                      594 ---------------------------
1017 - add G4RepleteEofM: EofM that includes force    595 - add G4RepleteEofM: EofM that includes force due to B, E, and gravity field
1018   as well as mu*grad(B) and spin tracking.       596   as well as mu*grad(B) and spin tracking.
1019                                                  597 
1020 May 10th, 2013 P.Gumplinger/J.Apostolakis - f    598 May 10th, 2013 P.Gumplinger/J.Apostolakis - field-V09-06-07
1021 -----------------------------------------        599 -----------------------------------------
1022 - Revised number of field components (to allo    600 - Revised number of field components (to allow up to 24).
1023    18 are required for new applications (B, E    601    18 are required for new applications (B, E, Gravity, B-gradients)
1024 - Fixes for initialisation errors found by Co    602 - Fixes for initialisation errors found by Coverity.
1025                                                  603 
1026 May 10th, 2013 P.Gumplinger - field-V09-06-06    604 May 10th, 2013 P.Gumplinger - field-V09-06-06
1027 ---------------------------                      605 ---------------------------
1028 - prevent divided by zero and shortcut spin t    606 - prevent divided by zero and shortcut spin tracking for spin == 0
1029   particles: G4Mag_SpinEqRhs.cc, G4EqEMFieldW    607   particles: G4Mag_SpinEqRhs.cc, G4EqEMFieldWithSpin.cc and
1030   G4EqEMFieldWithEDM.cc                          608   G4EqEMFieldWithEDM.cc
1031                                             f << 609                                             field-V09-06-05 - same 
1032 May 8th,  2013 P.Gumplinger/J.Apostolakis - f    610 May 8th,  2013 P.Gumplinger/J.Apostolakis - field-V09-06-04
1033 -----------------------------------------        611 -----------------------------------------
1034 - Introduced new class G4ChargeState to hold     612 - Introduced new class G4ChargeState to hold charge, spin, magnetic moment
1035      (promoted from internal class of G4Field    613      (promoted from internal class of G4FieldTrack).
1036 - Changed the signature of EquationOfMotion::    614 - Changed the signature of EquationOfMotion::SetChargeMomentumMass to
1037  take G4ChargeState in place of G4double (cha    615  take G4ChargeState in place of G4double (charge) as first argument.
1038 - Deleted SetChargeMomentumMass from G4ChordF    616 - Deleted SetChargeMomentumMass from G4ChordFinder, G4PropagatorInField,
1039    G4MagInt_Driver                               617    G4MagInt_Driver
1040                                                  618 
1041 - Migrated testPropagateMagField and testProp    619 - Migrated testPropagateMagField and testPropagateSpin.
1042                                                  620 
1043 March 19th, 2013 G.Cosmo - field-V09-06-03, f    621 March 19th, 2013 G.Cosmo - field-V09-06-03, field-V09-06-02
1044 -------------------------                        622 -------------------------
1045 - Cleanup of MT changes in G4FieldManagerStor    623 - Cleanup of MT changes in G4FieldManagerStore.
1046                                                  624 
1047 February 26th, 2013 A.Dotti - field-V09-06-01    625 February 26th, 2013 A.Dotti - field-V09-06-01
1048 ---------------------------                      626 ---------------------------
1049 - First implementation of Cloning mechanism (    627 - First implementation of Cloning mechanism (needed for MT)
1050                                                  628 
1051 February 22nd, 2013 G.Cosmo - field-V09-06-00    629 February 22nd, 2013 G.Cosmo - field-V09-06-00
1052 ---------------------------                      630 ---------------------------
1053 - Cleanup of unnecessary changes for multi-th    631 - Cleanup of unnecessary changes for multi-threading in G4QuadrupoleMagField.
1054 - Removed unused private data-members in G4Ma    632 - Removed unused private data-members in G4Mag_UsualEqRhs and G4RKG3_Stepper.
1055                                                  633 
1056 November 14th, 2012 P.Mato - field-V09-05-07     634 November 14th, 2012 P.Mato - field-V09-05-07
1057 --------------------------                       635 --------------------------
1058 - G4QuadrupoleMagField: allow displaced origi    636 - G4QuadrupoleMagField: allow displaced origin and rotation (Björn Riese)
1059 - Added G4SystemOfUnits.hh in unit tests         637 - Added G4SystemOfUnits.hh in unit tests
1060                                                  638 
1061 August 30th, 2012 P.Mato - field-V09-05-06       639 August 30th, 2012 P.Mato - field-V09-05-06
1062 ------------------------                         640 ------------------------
1063 - Adapted CMakeLists.txt files to new unit te    641 - Adapted CMakeLists.txt files to new unit tests
1064                                                  642 
1065 June 11th, 2012 G.Cosmo - field-V09-05-05        643 June 11th, 2012 G.Cosmo - field-V09-05-05
1066 -----------------------                          644 -----------------------
1067 - Explicitly use inclusion of headers for sys    645 - Explicitly use inclusion of headers for system of units and physical
1068   constants, in plan to remove implicit inclu    646   constants, in plan to remove implicit inclusion from globals.hh.
1069                                                  647 
1070 May 14th, 2012 G.Cosmo - field-V09-05-04         648 May 14th, 2012 G.Cosmo - field-V09-05-04
1071 ----------------------                           649 ----------------------
1072 - Fixed spurious case of hidden variable visi    650 - Fixed spurious case of hidden variable visibility in G4NystromRK4,
1073   detected with '-Wshadow' compilation option    651   detected with '-Wshadow' compilation option on gcc compiler.
1074                                                  652 
1075 February 3rd,  2012 J.Apostolakis - field-V09    653 February 3rd,  2012 J.Apostolakis - field-V09-05-03
1076 ---------------------------------                654 ---------------------------------
1077 - G4FieldTrack:                               << 655 - G4FieldTrack: 
1078     Added new (inline) method to set the Rest << 656     Added new (inline) method to set the Rest Mass. Needed in order to 
1079        reset this - and keep reuse the same G    657        reset this - and keep reuse the same G4FieldTrack in a client
1080        (across tracks.)                          658        (across tracks.)
1081     Made SetCurvePnt() method private.           659     Made SetCurvePnt() method private.
1082     Simplified implementation of constructors << 660     Simplified implementation of constructors.  Gain of 1 square root and 
1083        1 division per call.                      661        1 division per call.
1084                                                  662 
1085 February  3rd,  2012 G.Cosmo - field-V09-05-0    663 February  3rd,  2012 G.Cosmo - field-V09-05-02
1086 ----------------------------                     664 ----------------------------
1087 - Removed tests in CMakeLists.txt causing cat    665 - Removed tests in CMakeLists.txt causing catastrophic failure in system
1088   testing!                                       666   testing!
1089                                                  667 
1090 February  2nd,  2012 J.Apostolakis - field-V0    668 February  2nd,  2012 J.Apostolakis - field-V09-05-01
1091 ----------------------------------               669 ----------------------------------
1092 - G4Mag_UsualEqRhs: in SetChargeMomentumMass(    670 - G4Mag_UsualEqRhs: in SetChargeMomentumMass() method, fixed problem with
1093   division by zero; stopped updating 'fInvCur    671   division by zero; stopped updating 'fInvCurrentMomentumXc' (data member
1094   is obsolete).                                  672   is obsolete).
1095 - Added tests in CMakeLists.txt                  673 - Added tests in CMakeLists.txt
1096                                                  674 
1097 December 13th,  2011 G.Cosmo - field-V09-05-0    675 December 13th,  2011 G.Cosmo - field-V09-05-00
1098 ----------------------------                     676 ----------------------------
1099 - Fixed Coverity defects in G4SimpleRunge (re    677 - Fixed Coverity defects in G4SimpleRunge (removed spurious pointer
1100   data member) and G4FieldTrack (missing G4Ch    678   data member) and G4FieldTrack (missing G4ChargeState::operator=()).
1101 - Synchronised unit tests to trunk (new test     679 - Synchronised unit tests to trunk (new test field07 and minor updates).
1102                                                  680 
1103 November 11th,  2011 J.Apostolakis - field-V0    681 November 11th,  2011 J.Apostolakis - field-V09-04-06
1104 ----------------------------------               682 ----------------------------------
1105 - Added G4Field.cc to list of files in source    683 - Added G4Field.cc to list of files in sources.cmake
1106                                                  684 
1107 November  4th,  2011 J.Apostolakis - field-V0    685 November  4th,  2011 J.Apostolakis - field-V09-04-05
1108 ----------------------------------               686 ----------------------------------
1109 - G4Field: revised to improve ability to dete    687 - G4Field: revised to improve ability to detect gravity field:
1110   Added new data member to identify gravity f    688   Added new data member to identify gravity field;
1111   Added new method IsGravityActive() to acces    689   Added new method IsGravityActive() to access this data member;
1112   Created new source file: moving constructor    690   Created new source file: moving constructors to it.
1113 - Changed G4UniformGravityField and G4Electro << 691 - Changed G4UniformGravityField and G4ElectroMagneticField 
1114   to accomodate this refinement.                 692   to accomodate this refinement.
1115                                                  693 
1116 November 2nd,  2011 P.Gumplinger - field-V09-    694 November 2nd,  2011 P.Gumplinger - field-V09-04-04
1117 --------------------------------                 695 --------------------------------
1118 - update list of files in sources.cmake          696 - update list of files in sources.cmake
1119                                                  697 
1120 October 28th,  2011 P.Gumplinger - field-V09-    698 October 28th,  2011 P.Gumplinger - field-V09-04-03
1121 --------------------------------                 699 --------------------------------
1122 - Added (uniform) gravity field capability.   << 700 - Added (uniform) gravity field capability. 
1123   New classes G4EqGravityField, G4UniformGrav    701   New classes G4EqGravityField, G4UniformGravityField.
1124                                                  702 
1125   *Required* for co-working tag in Transporta    703   *Required* for co-working tag in Transportation
1126                                                  704 
1127 October 12th,  2011 P.Gumplinger - field-V09-    705 October 12th,  2011 P.Gumplinger - field-V09-04-02
1128 --------------------------------                 706 --------------------------------
1129 - replaced: omegac = 0.105658387*GeV/mass * 2    707 - replaced: omegac = 0.105658387*GeV/mass * 2.837374841e-3*(rad/cm/kilogauss)
1130   with:     omegac = (eplus/particleMass)*c_l    708   with:     omegac = (eplus/particleMass)*c_light
1131   in G4EqEMFieldWithEDM.cc, G4Mag_SpinEqRhs.c    709   in G4EqEMFieldWithEDM.cc, G4Mag_SpinEqRhs.cc, G4EqEMFieldWithSpin.cc
1132   changed calculation:                        << 710   changed calculation: 
1133      std::sqrt(kineticEnergy*kineticEnergy +     711      std::sqrt(kineticEnergy*kineticEnergy + 2.0*restMass_c2*kineticEnergy);
1134   to:                                            712   to:
1135      std::sqrt(kineticEnergy*(kineticEnergy+2    713      std::sqrt(kineticEnergy*(kineticEnergy+2.0*restMass_c2))
1136   in G4FieldTrack.cc                             714   in G4FieldTrack.cc
1137                                                  715 
1138 August 11th,  2011 G.Cosmo - field-V09-04-01     716 August 11th,  2011 G.Cosmo - field-V09-04-01
1139 --------------------------                       717 --------------------------
1140 - Migrated to new G4Exception scheme for warn    718 - Migrated to new G4Exception scheme for warnings and errors.
1141 - Defined scheme for warnings/errors coding:     719 - Defined scheme for warnings/errors coding:
1142   + 1xxx for warnings, 0xxx for errors.          720   + 1xxx for warnings, 0xxx for errors.
1143   Code numbering:                                721   Code numbering:
1144   + 0001: not supported or implemented featur    722   + 0001: not supported or implemented features;
1145   + 0002: invalid setup/construct;               723   + 0002: invalid setup/construct;
1146   + 0003: invalid run condition;                 724   + 0003: invalid run condition;
1147   + 1001: incorrect setup; automatically adap    725   + 1001: incorrect setup; automatically adapted.
1148   + 1002: notification.                          726   + 1002: notification.
1149                                                  727 
1150 May 13th, 2011 J.Apostolakis                     728 May 13th, 2011 J.Apostolakis
1151 ----------------------------                     729 ----------------------------
1152 - Added new class G4TrialsCounter for keeping    730 - Added new class G4TrialsCounter for keeping statistics of trials.
1153 - Avoid printing out pointer in G4CachedMagne    731 - Avoid printing out pointer in G4CachedMagneticField::ReportStatistics().
1154 - Updated unit tests.                            732 - Updated unit tests.
1155                                                  733 
1156 May 12th,  2011 G.Cosmo - field-V09-04-00        734 May 12th,  2011 G.Cosmo - field-V09-04-00
1157 -----------------------                          735 -----------------------
1158 - Fixed compilation warnings from gcc-4.6.0 f    736 - Fixed compilation warnings from gcc-4.6.0 for variables set but not used.
1159                                                  737 
1160 May 5th,  2011 J.Apostolakis                     738 May 5th,  2011 J.Apostolakis
1161 ----------------------------                     739 ----------------------------
1162 - Reordered data members to group invariants,    740 - Reordered data members to group invariants, field parameters, etc...
1163                                                  741 
1164 Sep 10th,  2010 J.Apostolakis - field-V09-03-    742 Sep 10th,  2010 J.Apostolakis - field-V09-03-03
1165 -----------------------------                    743 -----------------------------
1166 - Revised constructor of G4MagErrorStepper to    744 - Revised constructor of G4MagErrorStepper to add number of State variables
1167 - Corrected MagErrorStepper to copy State Var    745 - Corrected MagErrorStepper to copy State Variable to output
1168 - Enable G4ConstRK4 to copy remaining State V    746 - Enable G4ConstRK4 to copy remaining State Variables (must integrate 6)
1169                                                  747 
1170 Sep 10th,  2010 J.Apostolakis - field-V09-03-    748 Sep 10th,  2010 J.Apostolakis - field-V09-03-02
1171 -----------------------------                    749 -----------------------------
1172 - New class G4MonopoleEq for rhs of d(pc)/ds     750 - New class G4MonopoleEq for rhs of d(pc)/ds propagation in field
1173   in SI units (V.Grichine).                      751   in SI units (V.Grichine).
1174 - Fixed passing of time in G4NystromRK4          752 - Fixed passing of time in G4NystromRK4
1175                                                  753 
1176 Jul 21st,  2010 T.Nikitina - field-V09-03-01     754 Jul 21st,  2010 T.Nikitina - field-V09-03-01
1177 --------------------------                       755 --------------------------
1178 - Fixed cases of memory corruption in G4RKG3_    756 - Fixed cases of memory corruption in G4RKG3_Stepper.
1179 - Fixed case of unused array data member in G    757 - Fixed case of unused array data member in G4ExactHelixStepper.
1180 - Removed useless code never executed in G4Co    758 - Removed useless code never executed in G4ConstRK4::Stepper().
1181 - Fixed initialization in G4NystromRK4 constr    759 - Fixed initialization in G4NystromRK4 constructor.
1182                                                  760 
1183 Jul 14th,  2010 G.Cosmo - field-V09-03-00        761 Jul 14th,  2010 G.Cosmo - field-V09-03-00
1184 -----------------------                          762 -----------------------
1185 - Added dummy initialization of members in co    763 - Added dummy initialization of members in constructors for G4CashKarpRKF45,
1186   G4ConstRK4, G4EqEMFieldWithEDM, G4EqEMField    764   G4ConstRK4, G4EqEMFieldWithEDM, G4EqEMFieldWithSpin, G4ExactHelixStepper,
1187   G4FieldTrack, G4MagHelicalStepper, G4MagInt    765   G4FieldTrack, G4MagHelicalStepper, G4MagInt_Driver, G4Mag_EqRhs,
1188   G4Mag_SpinEqRhs, G4Mag_UsualEqRhs, G4Nystro    766   G4Mag_SpinEqRhs, G4Mag_UsualEqRhs, G4NystromRK4, G4RKG3_Stepper,
1189   G4UniformElectricField, G4UniformElectricFi    767   G4UniformElectricField, G4UniformElectricField.
1190                                                  768 
1191 Nov 12th,  2009 J.Apostolakis - field-V09-02-    769 Nov 12th,  2009 J.Apostolakis - field-V09-02-09
1192 -----------------------------                    770 -----------------------------
1193 - G4MagIntegratorDriver:  activate check on i    771 - G4MagIntegratorDriver:  activate check on integration error for spin.
1194                                                  772 
1195 Nov 12th,  2009 J.Apostolakis - field-V09-02-    773 Nov 12th,  2009 J.Apostolakis - field-V09-02-08
1196 -----------------------------  (fix only)        774 -----------------------------  (fix only)
1197 - G4Nystrom:  Corrected interface method getF    775 - G4Nystrom:  Corrected interface method getField: array now has explicit dimension[4]
1198                 (Problem found by gcc 4.3 - i    776                 (Problem found by gcc 4.3 - it checked indices used in inline method! )
1199                                                  777 
1200 Nov 6th,  2009 P.Gumplinger - field-V09-02-07    778 Nov 6th,  2009 P.Gumplinger - field-V09-02-07
1201 ---------------------------                      779 ---------------------------
1202 - bug fix in G4EqEMFieldWithSpin and G4EqEMFi    780 - bug fix in G4EqEMFieldWithSpin and G4EqEMFieldWithEDM
1203   thanks to Hiromi Iinuma (KEK) see:             781   thanks to Hiromi Iinuma (KEK) see:
1204   http://hypernews.slac.stanford.edu/HyperNew    782   http://hypernews.slac.stanford.edu/HyperNews/geant4/get/emfields/161.html
1205                                                  783 
1206 Nov 5th,  2009 J.Apostolakis - field-V09-02-0    784 Nov 5th,  2009 J.Apostolakis - field-V09-02-06
1207 ----------------------------                     785 ----------------------------
1208 - G4MagIntegratorDriver.cc : Enabled call to     786 - G4MagIntegratorDriver.cc : Enabled call to ComputeRightHandSide
1209 - G4NystromRK4.cc          : Disabled auxilia    787 - G4NystromRK4.cc          : Disabled auxiliary code in Stepper (needed if
1210                               ComputeRightHan    788                               ComputeRightHandSide is not called.)
1211                                                  789 
1212 Nov 5th,  2009 J.Apostolakis - field-V09-02-0    790 Nov 5th,  2009 J.Apostolakis - field-V09-02-05
1213 ----------------------------                     791 ----------------------------
1214 - Added new virtual method CalculateRightHand    792 - Added new virtual method CalculateRightHandSide to G4MagIntegratorStepper for use
1215       in caching momentum (and field value) b    793       in caching momentum (and field value) by G4NystromRK4
1216       Default implementation in G4MagIntegrat    794       Default implementation in G4MagIntegratorStepper calls RightHandSide inline method.
1217 - G4Nystrom:  New Set/Get method for cache di    795 - G4Nystrom:  New Set/Get method for cache distance.
1218               Changed private data members in    796               Changed private data members in G4NystromRK4.
1219 - G4MagIntegratorDriver:  alternative call to    797 - G4MagIntegratorDriver:  alternative call to ComputeRightHandSide is not used (in comment)
1220               As a result G4NystromRK4 operat << 798               As a result G4NystromRK4 operates without reusing 
1221                                                  799 
1222 Nov 5th,  2009 J.Apostolakis - field-V09-02-0    800 Nov 5th,  2009 J.Apostolakis - field-V09-02-04
1223 ----------------------------                     801 ----------------------------
1224 - G4CachedMagneticField: New Simple class to  << 802 - G4CachedMagneticField: New Simple class to cache value of Magnetic Field. 
1225      Speeds up code when calculation of field    803      Speeds up code when calculation of field value is complex.
1226 - G4NystromRK4 :         New Stepper with Nys    804 - G4NystromRK4 :         New Stepper with Nystrom for magnetic field
1227      with analytic estimation of integration  << 805      with analytic estimation of integration error.  
1228      Greatly reduces number of field value pe    806      Greatly reduces number of field value per step.
1229 - Revised testPropagateMagField to use Cached    807 - Revised testPropagateMagField to use Cached Quadrupole field,
1230      and to cover G4NystromRK4 and G4ConstRK4    808      and to cover G4NystromRK4 and G4ConstRK4.
1231                                                  809 
1232 Nov 4th,  2009 P.Gumplinger - field-V09-02-03    810 Nov 4th,  2009 P.Gumplinger - field-V09-02-03
1233 ---------------------------                      811 ---------------------------
1234 - (minor change) remove comment from G4EqEMFi    812 - (minor change) remove comment from G4EqEMFieldWithSpin.cc
1235   add G4EqEMFieldWithEDM class: this is the R    813   add G4EqEMFieldWithEDM class: this is the RHS of EofM in a combined
1236   electric and magnetic field, with spin trac    814   electric and magnetic field, with spin tracking for both MDM and EDM terms.
1237   Thanks to Kevin Lynch, Phys. Dept. at Bosto    815   Thanks to Kevin Lynch, Phys. Dept. at Boston University.
1238                                                  816 
1239 May 18th, 2009 T.Nikitina - field-V09-02-02      817 May 18th, 2009 T.Nikitina - field-V09-02-02
1240 -------------------------                        818 -------------------------
1241 - Enhanced algorithm G4ChordFinder::ApproxCur    819 - Enhanced algorithm G4ChordFinder::ApproxCurvePointS() in order to speedup
1242   BrentLocator.                                  820   BrentLocator.
1243                                                  821 
1244 March 25th, 2009 G.Cosmo - field-V09-02-01       822 March 25th, 2009 G.Cosmo - field-V09-02-01
1245 ------------------------                         823 ------------------------
1246 - Some code cleanup and formatting...            824 - Some code cleanup and formatting...
1247                                                  825 
1248 March 6th, 2009 P.Gumplinger - field-V09-02-0    826 March 6th, 2009 P.Gumplinger - field-V09-02-00
1249 ----------------------------                     827 ----------------------------
1250 - Added 3rd term of BMT equation (Spin x Beta    828 - Added 3rd term of BMT equation (Spin x Beta x Efield) to G4EqEMFieldWithSpin,
1251   addresses emfields forum posting #155 (bug     829   addresses emfields forum posting #155 (bug report). Thanks to Kevin Lynch,
1252   Phys. Dept. at Boston University.              830   Phys. Dept. at Boston University.
1253 - Moved renormalization of spin from G4EqEMFi    831 - Moved renormalization of spin from G4EqEMFieldWithSpin and G4Mag_SpinEqRhs to
1254   G4ClassicalRK4 and G4SimpleHeum.               832   G4ClassicalRK4 and G4SimpleHeum.
1255 - Added Spin propagation errors to the criter    833 - Added Spin propagation errors to the criteria for 'OneGoodStep' in
1256   G4MagIntegratorDriver but actually don't ad    834   G4MagIntegratorDriver but actually don't add it (yet) to the decision logic.
1257                                                  835 
1258 November, 19th, 2008  P.Gumplinger - field-V0    836 November, 19th, 2008  P.Gumplinger - field-V09-01-05
1259 ----------------------------------               837 ----------------------------------
1260 - Renormalized the spin to 1 in G4EqEMFieldWi    838 - Renormalized the spin to 1 in G4EqEMFieldWithSpin and G4Mag_SpinEqRhs.
1261                                                  839 
1262 November, 7th, 2008   P.Gumplinger - field-V0    840 November, 7th, 2008   P.Gumplinger - field-V09-01-04
1263 ----------------------------------               841 ----------------------------------
1264 - Added SetAnomaly() and GetAnomaly() accesso    842 - Added SetAnomaly() and GetAnomaly() accessors to G4EqEMFieldWithSpin.
1265                                                  843 
1266 October, 28th, 2008   T.Nikitina - field-V09-    844 October, 28th, 2008   T.Nikitina - field-V09-01-03
1267 --------------------------------                 845 --------------------------------
1268 - Added 'ApproxCurveV' to method G4ChordFinde << 846 - Added 'ApproxCurveV' to method G4ChordFinder::ApproxCurvePointS() in 
1269   order to better calculate the curve length.    847   order to better calculate the curve length.
1270 - Some code cleanup.                             848 - Some code cleanup.
1271                                                  849 
1272 September, 18th, 2008   T.Nikitina               850 September, 18th, 2008   T.Nikitina
1273 ----------------------------------               851 ----------------------------------
1274 - Added new stepper class G4ConstRK4, perform    852 - Added new stepper class G4ConstRK4, performing integration of one step
1275   with error calculation in constant magnetic    853   with error calculation in constant magnetic field; implementation derived
1276   from G4ClassicalRK4.                           854   from G4ClassicalRK4.
1277                                                  855 
1278 July, 15th, 2008   J.Apostolakis - field-V09-    856 July, 15th, 2008   J.Apostolakis - field-V09-01-02
1279 --------------------------------                 857 --------------------------------
1280 - Revised signature of G4ChordFinder::FinderN    858 - Revised signature of G4ChordFinder::FinderNextChord(), making 'FieldTrack'
1281   argument passed a reference.                   859   argument passed a reference.
1282                                                  860 
1283 May, 28th, 2008   T.Nikitina                     861 May, 28th, 2008   T.Nikitina
1284 ----------------------------                     862 ----------------------------
1285 - G4ChordFinder: added new method ApproxCurve    863 - G4ChordFinder: added new method ApproxCurvePointS() using Brent second order
1286   location mechanism.                            864   location mechanism.
1287                                                  865 
1288 April 24th, 2008   T.Nikitina - field-V09-01-    866 April 24th, 2008   T.Nikitina - field-V09-01-01
1289 -----------------------------                    867 -----------------------------
1290 - Fix 'unused' non-initialized values of dydx    868 - Fix 'unused' non-initialized values of dydx in G4EqMagElectricField
1291   and G4EqEMFieldWithSpin.                       869   and G4EqEMFieldWithSpin.
1292                                                  870 
1293 January 17th, 2008   G.Cosmo - field-V09-01-0    871 January 17th, 2008   G.Cosmo - field-V09-01-00
1294 ----------------------------                     872 ----------------------------
1295 - G4CashKarpRKF45: deleted un-needed duplicat    873 - G4CashKarpRKF45: deleted un-needed duplicate (and unused) instance variable
1296  'fNumberOfVariables', already defined in G4M    874  'fNumberOfVariables', already defined in G4MagIntegratorStepper. (J.Ap.)
1297 - Some code cleanup.                             875 - Some code cleanup.
1298                                                  876 
1299 December 7th, 2007   J.Apostolakis & T.Nikiti    877 December 7th, 2007   J.Apostolakis & T.Nikitina - field-V09-00-03
1300 ---------------------------------------------    878 -----------------------------------------------
1301 - New class G4FieldManagerStore. It enables r    879 - New class G4FieldManagerStore. It enables resetting of all chord
1302   finders' state. Needed to address problem r    880   finders' state. Needed to address problem reported by user.
1303                                                  881 
1304 September 9th, 2007  G.Cosmo - field-V09-00-0    882 September 9th, 2007  G.Cosmo - field-V09-00-02a
1305 ----------------------------                     883 ----------------------------
1306 - Some code cleanup in G4MagHelicalStepper.cc    884 - Some code cleanup in G4MagHelicalStepper.cc.
1307                                                  885 
1308 August 30th, 2007    P.Gumplinger - field-V09    886 August 30th, 2007    P.Gumplinger - field-V09-00-02
1309 ---------------------------------                887 ---------------------------------
1310 - Add G4EqEMFieldWithSpin class to allow trac    888 - Add G4EqEMFieldWithSpin class to allow tracking of spin also in
1311   G4ElectroMagneticFields                        889   G4ElectroMagneticFields
1312                                                  890 
1313 August 21st, 2007    T.Nikitina - field-V09-0    891 August 21st, 2007    T.Nikitina - field-V09-00-01
1314 -------------------------------                  892 -------------------------------
1315 - Fix to DistChord() method for Helical Stepp    893 - Fix to DistChord() method for Helical Steppers: adopt 'special' case
1316   also for Ang<2pi not only for Ang<pi; use c    894   also for Ang<2pi not only for Ang<pi; use cos() in place of tan(), to
1317   improve CPU performance.                       895   improve CPU performance.
1318 - Improved AdvanceHelix() to be able to make     896 - Improved AdvanceHelix() to be able to make half step and full step
1319   in one call.                                   897   in one call.
1320 - In G4HelixMixedStepper added possibility to    898 - In G4HelixMixedStepper added possibility to call different steppers for
1321   small steps and add some statistics how off    899   small steps and add some statistics how offen different steppers are called.
1322 - G4RKG3_Stepper: improved internal algorithm    900 - G4RKG3_Stepper: improved internal algorithm to use pre-computed values;
1323   the stepper now gives comparable CPU perfor << 901   the stepper now gives comparable CPU performance as ClassicalRK4. 
1324 - Updated unit tests.                            902 - Updated unit tests.
1325                                                  903 
1326 August 17th, 2007    G.Cosmo - field-V09-00-0    904 August 17th, 2007    G.Cosmo - field-V09-00-00
1327 ----------------------------                     905 ----------------------------
1328 - Changed FatalException to EventMustBeAborte    906 - Changed FatalException to EventMustBeAborted in AccurateAdvance()
1329   if proposed integration step is negative.      907   if proposed integration step is negative.
1330                                                  908 
1331 June 8th, 2007    T.Nikitina - field-V08-03-0    909 June 8th, 2007    T.Nikitina - field-V08-03-03
1332 ----------------------------                     910 ----------------------------
1333 - Relaxed FatalException to Warning in G4MagI << 911 - Relaxed FatalException to Warning in G4MagIntegratorDriver::AccurateAdvance() 
1334   for case of step zero and return previous v << 912   for case of step zero and return previous value. This fixes problem 
1335   observed by ATLAS in release 8.3 when requi    913   observed by ATLAS in release 8.3 when requiring very accurate propagation
1336   -- ie using very small values for acceptabl    914   -- ie using very small values for acceptable integration error.
1337                                                  915 
1338 May 18th, 2007    T.Nikitina - field-V08-03-0    916 May 18th, 2007    T.Nikitina - field-V08-03-02
1339 ----------------------------                     917 ----------------------------
1340 - New class G4HelixMixedStepper, mixing helic    918 - New class G4HelixMixedStepper, mixing helical stepper and RK
1341   G4MagHelicalStepper                            919   G4MagHelicalStepper
1342 - Keep values of  inverse Radius, ..             920 - Keep values of  inverse Radius, ..
1343 - New calculation of DistChord for SteppingAn    921 - New calculation of DistChord for SteppingAngle > pi
1344   G4RKG3Stepper                                  922   G4RKG3Stepper
1345 - New calculation of DistChord for SteppingAn    923 - New calculation of DistChord for SteppingAngle > pi
1346                                                  924 
1347 May 16th, 2007    G.Cosmo - field-V08-03-01      925 May 16th, 2007    G.Cosmo - field-V08-03-01
1348 -------------------------                        926 -------------------------
1349 - Introduced new class G4ErrorMag_UsualEqRhs     927 - Introduced new class G4ErrorMag_UsualEqRhs used to reverse the magnetic
1350   field when propagation is backwards for err    928   field when propagation is backwards for error propagation (by P.Arce).
1351 - Coworks with tag "global-V08-03-02".           929 - Coworks with tag "global-V08-03-02".
1352                                                  930 
1353 May 11th, 2007    G.Cosmo - field-V08-03-00      931 May 11th, 2007    G.Cosmo - field-V08-03-00
1354 -------------------------                        932 -------------------------
1355 - Use call to G4GeometryTolerance instead of     933 - Use call to G4GeometryTolerance instead of kCarTolerance constant in
1356   G4MagIntegratorDriver.                         934   G4MagIntegratorDriver.
1357 - Requires tag "global-V08-03-00" and related    935 - Requires tag "global-V08-03-00" and related tag set.
1358                                                  936 
1359 May 10th, 2007    J.Apostolakis - field-V08-0    937 May 10th, 2007    J.Apostolakis - field-V08-02-01
1360 -------------------------------                  938 -------------------------------
1361 - G4MagIntegratorDriver:                      << 939 - G4MagIntegratorDriver: 
1362     * added protections against zero initial     940     * added protections against zero initial or internal step h=0, (exceptions)
1363     * revised (re)calculation of h, and quit  << 941     * revised (re)calculation of h, and quit loop if h/length < smallest-fraction (~ 10^-12) 
1364                                                  942 
1365 April 26th, 2007  T.Nikitina - field-V08-02-0    943 April 26th, 2007  T.Nikitina - field-V08-02-00
1366 ----------------------------                     944 ----------------------------
1367 - Corrected integration constants in G4MagHel    945 - Corrected integration constants in G4MagHelicalStepper
1368 - Added implementation of G4RKG3_Stepper, ste    946 - Added implementation of G4RKG3_Stepper, stepper derived from Geant3.
1369 - Updated NTST unit test. New unit test "fiel    947 - Updated NTST unit test. New unit test "field06" for comparison of steppers.
1370                                                  948 
1371 November 14th, 2006  J.Apostolakis - field-V0    949 November 14th, 2006  J.Apostolakis - field-V08-01-02
1372 ----------------------------------               950 ----------------------------------
1373 - G4MagIntegratorDriver                          951 - G4MagIntegratorDriver
1374   * Made first argument of GetDerivatives a r    952   * Made first argument of GetDerivatives a reference - avoid copy
1375 - G4MagIntegratorStepper                         953 - G4MagIntegratorStepper
1376   * Include the SetEquationOfMotion() method  << 954   * Include the SetEquationOfMotion() method in G4MagIntegratorStepper 
1377     (for Geant4e, as in field-V08-01-00)         955     (for Geant4e, as in field-V08-01-00)
1378   * Update of disclaimers.                       956   * Update of disclaimers.
1379                                                  957 
1380 November 13th, 2006  G.Cosmo - field-V08-01-0    958 November 13th, 2006  G.Cosmo - field-V08-01-01
1381 ----------------------------                     959 ----------------------------
1382 - G4FieldTrack:                                  960 - G4FieldTrack:
1383   o Implemented missing definition for GetCha    961   o Implemented missing definition for GetCharge().
1384   o Corrected 'const' qualifier for accessors    962   o Corrected 'const' qualifier for accessors in the subclass.
1385   o Cleanup ...                                  963   o Cleanup ...
1386 - NOTE: this tag is NOT including the change     964 - NOTE: this tag is NOT including the change below in G4MagIntegratorStepper.
1387                                                  965 
1388 June 21st, 2006  J.Apostolakis - field-V08-01    966 June 21st, 2006  J.Apostolakis - field-V08-01-00
1389 ------------------------------                   967 ------------------------------
1390 - Including the SetEquationOfMotion() method     968 - Including the SetEquationOfMotion() method in G4MagIntegratorStepper
1391                                                  969 
1392 June 22nd, 2006  J.Apostolakis - field-V08-00    970 June 22nd, 2006  J.Apostolakis - field-V08-00-07
1393 -----------------------------                    971 -----------------------------
1394 - G4ExactHelixStepper: reintroduced corrected << 972 - G4ExactHelixStepper: reintroduced corrected class 
1395     --> testPropagateMagField now tests it al    973     --> testPropagateMagField now tests it also (added)
1396 - G4MagHelicalStepper: made Stepper virtual ( << 974 - G4MagHelicalStepper: made Stepper virtual (for now) 
1397              to enable G4ExactHelixStepper to    975              to enable G4ExactHelixStepper to override it
1398                                                  976 
1399 June 21st, 2006  J.Apostolakis - field-V08-00    977 June 21st, 2006  J.Apostolakis - field-V08-00-06
1400 -----------------------------                    978 -----------------------------
1401 - G4ExactHelixStepper: taking out class       << 979 - G4ExactHelixStepper: taking out class 
1402    (provisional tag in case of difficulties w    980    (provisional tag in case of difficulties with class, revisions)
1403                                                  981 
1404 --- The field-V08-00-0x , x > 6, tags do not     982 --- The field-V08-00-0x , x > 6, tags do not include the change below
1405                                                  983 
1406 May 27th, 2006  J.Apostolakis - field-V08-00-    984 May 27th, 2006  J.Apostolakis - field-V08-00-05
1407 -----------------------------                    985 -----------------------------
1408 - G4FieldTrack: Fix for simple compilation er    986 - G4FieldTrack: Fix for simple compilation error on Sun.
1409                                                  987 
1410 May 23rd, 2006  J.Apostolakis - field-V08-00-    988 May 23rd, 2006  J.Apostolakis - field-V08-00-04
1411 -----------------------------                    989 -----------------------------
1412 - G4FieldTrack: Fix for memory leak for Charg    990 - G4FieldTrack: Fix for memory leak for ChargeState
1413    Made G4ChargeState a data member (has an i    991    Made G4ChargeState a data member (has an instance)
1414                                                  992 
1415 May 18th, 2006  J.Apostolakis - field-V08-00-    993 May 18th, 2006  J.Apostolakis - field-V08-00-03
1416 -----------------------------                    994 -----------------------------
1417 - G4FieldTrack: Fix for issue with gcc 4.0  (    995 - G4FieldTrack: Fix for issue with gcc 4.0  (mac)
1418                                                  996 
1419 May 16th, 2006  J.Apostolakis - field-V08-00-    997 May 16th, 2006  J.Apostolakis - field-V08-00-02
1420 -----------------------------                    998 -----------------------------
1421 - G4ExactHelixStepper                            999 - G4ExactHelixStepper
1422    Taken out alpha version - it was included  << 1000    Taken out alpha version - it was included in error 
1423                                                  1001 
1424 May 11th, 2006  J.Apostolakis - field-V08-00-    1002 May 11th, 2006  J.Apostolakis - field-V08-00-01
1425 -----------------------------                    1003 -----------------------------
1426 - G4FieldTrack                                   1004 - G4FieldTrack
1427    Significant, provisional change:              1005    Significant, provisional change:
1428      * Added charge and moments to FieldTrack << 1006      * Added charge and moments to FieldTrack 
1429          (SetMethods,  and pointer to embedde    1007          (SetMethods,  and pointer to embedded class G4ChargeState)
1430    Technical revisions:                          1008    Technical revisions:
1431      * New constructor, with charge and witho    1009      * New constructor, with charge and without velocity
1432      * New almost-default constructor (taking    1010      * New almost-default constructor (taking a character)
1433    Also:                                      << 1011    Also: 
1434      * New constructor to take const referenc    1012      * New constructor to take const reference to Spin
1435      * New implementation method UpdateFourMo    1013      * New implementation method UpdateFourMomentum
1436      * Streaming operator takes const referen << 1014      * Streaming operator takes const reference, 
1437          and outputs momentum magnitude & dir    1015          and outputs momentum magnitude & direction magn.
1438                                                  1016 
1439 - G4ExactHelixStepper                            1017 - G4ExactHelixStepper
1440    Included in error                          << 1018    Included in error 
1441                                                  1019 
1442 Apr 6th, 2006  J.Apostolakis - field-V08-00-0    1020 Apr 6th, 2006  J.Apostolakis - field-V08-00-00
1443 ----------------------------                     1021 ----------------------------
1444 - In G4FieldManager                              1022 - In G4FieldManager
1445  Added missing  const GetChordFinder() method << 1023  Added missing  const GetChordFinder() method -- Problem report #847 
1446  Corrected description (at top of include fil    1024  Corrected description (at top of include file hh):
1447   - It is possible to set the field manager o    1025   - It is possible to set the field manager of a logical volume (since long)
1448                                                  1026 
1449                                                  1027 
1450 Nov 9th, 2005  G.Cosmo - field-V07-01-00         1028 Nov 9th, 2005  G.Cosmo - field-V07-01-00
1451 ----------------------                           1029 ----------------------
1452 - Archived source code of field01 unit test,     1030 - Archived source code of field01 unit test, now moved to examples/extended.
1453 - Migrated unit test NTST to use <sstream> an    1031 - Migrated unit test NTST to use <sstream> and std:: namespace. Up-to-date
1454   with G4VParticleChange new interface.          1032   with G4VParticleChange new interface.
1455                                                  1033 
1456 Dec 2nd, 2004  G.Cosmo - field-V06-02-02         1034 Dec 2nd, 2004  G.Cosmo - field-V06-02-02
1457 ----------------------                           1035 ----------------------
1458 - Implemented migration to <cmath> for standa    1036 - Implemented migration to <cmath> for standard mathematical functions.
1459                                                  1037 
1460 Dec 2nd, 2004  J.Apostolakis - field-V06-02-0    1038 Dec 2nd, 2004  J.Apostolakis - field-V06-02-01
1461 ----------------------------                     1039 ----------------------------
1462 - Improvements to comments in key Field class    1040 - Improvements to comments in key Field classes
1463 - Changes to test/NTST, renaming 'main()' fil    1041 - Changes to test/NTST, renaming 'main()' file & modifying input files
1464 - Several improvements to test files             1042 - Several improvements to test files
1465    testProElectroMagField.cc                     1043    testProElectroMagField.cc
1466      * updating for new Electric Field inheri    1044      * updating for new Electric Field inheritance (& need for
1467        different ChordFinder creation )          1045        different ChordFinder creation )
1468      * adding columns to print-outs in spin c    1046      * adding columns to print-outs in spin case for better diagnosis
1469    testPropagateMagField.cc                      1047    testPropagateMagField.cc
1470      * Added verbosity level 1 to field Propa    1048      * Added verbosity level 1 to field Propagator, relabelled old method.
1471    testPropagateSpin.cc                          1049    testPropagateSpin.cc
1472      * Added more printout of parameters (sta    1050      * Added more printout of parameters (state) of G4PropagatorInField
1473        and G4FieldManager before running each    1051        and G4FieldManager before running each test.
1474    test/NTST                                     1052    test/NTST
1475      * Renamed main() file to testNTST.cc and    1053      * Renamed main() file to testNTST.cc and added G4UItcsh terminal.
1476                                                  1054 
1477                                                  1055 
1478 Oct 20th, 2004  P.Gumplinger - field-V06-02-0    1056 Oct 20th, 2004  P.Gumplinger - field-V06-02-00
1479 ----------------------------                     1057 ----------------------------
1480 - Added Set/GetAnomaly() methods in G4Mag_Spi    1058 - Added Set/GetAnomaly() methods in G4Mag_SpinEqRhs.
1481                                                  1059 
1482 Feb 9th, 2004  G.Cosmo - field-V06-00-00         1060 Feb 9th, 2004  G.Cosmo - field-V06-00-00
1483 ----------------------                           1061 ----------------------
1484 - G4UniformMagField.cc: added missing impleme    1062 - G4UniformMagField.cc: added missing implementation for
1485   GetConstantFieldValue(). Fixes bug report #    1063   GetConstantFieldValue(). Fixes bug report #575.
1486                                                  1064 
1487 Nov 13th, 2003  J.Apostolakis - field-V05-02-    1065 Nov 13th, 2003  J.Apostolakis - field-V05-02-08
1488 -----------------------------                    1066 -----------------------------
1489 - G4ChordFinder:                              << 1067 - G4ChordFinder:  
1490   o extended the arguments of AdvanceChordLim    1068   o extended the arguments of AdvanceChordLimited  and  FindNextChord
1491     adding the current safety sphere (origin,    1069     adding the current safety sphere (origin, radius), for use in optimising.
1492   o fixed set functions which had side effect    1070   o fixed set functions which had side effect (on first fraction.)
1493 - Added new class G4ChordFinderSaf (using abo    1071 - Added new class G4ChordFinderSaf (using above)
1494   o which uses safety to create longer chords << 1072   o which uses safety to create longer chords, so enabling 
1495       propagation in fewer steps --> performa    1073       propagation in fewer steps --> performance optimisation
1496 - G4FieldManager:                             << 1074 - G4FieldManager: 
1497     Changed default accuracy parameters to mu    1075     Changed default accuracy parameters to much better values:
1498         Epsilon Min Default  to 5.0e-5  from     1076         Epsilon Min Default  to 5.0e-5  from 5.0e-7  (too small)
1499         Epsilon Max Default  to 0.001   from     1077         Epsilon Max Default  to 0.001   from 0.05    (far too big)
1500                                                  1078 
1501 Nov  7th, 2003  J.Apostolakis - field-V05-02-    1079 Nov  7th, 2003  J.Apostolakis - field-V05-02-07
1502 -----------------------------                    1080 -----------------------------
1503 - G4ChordFinder                               << 1081 - G4ChordFinder 
1504   o Made this a base class                       1082   o Made this a base class
1505     * to enable specialised implementations      1083     * to enable specialised implementations
1506     * virtual methods: FindNextChord, PrintSt    1084     * virtual methods: FindNextChord, PrintStatistics)
1507     * new method AccumulateStatistics to aid     1085     * new method AccumulateStatistics to aid in this
1508                                                  1086 
1509   o New default value of                         1087   o New default value of                                      Accuracy!!
1510       Delta Chord        to  0.25 mm    (from    1088       Delta Chord        to  0.25 mm    (from 3.00 mm)     <-----
1511                                               << 1089                                                                  
1512 - G4FieldManager                                 1090 - G4FieldManager
1513   o Changed default values of                    1091   o Changed default values of
1514       Delta One Step     to  0.010 mm   (from    1092       Delta One Step     to  0.010 mm   (from 0.25 mm)     <-----
1515       Delta Intersection to  0.001 mm   (from    1093       Delta Intersection to  0.001 mm   (from 0.10 mm)     <-----
1516     for increased default accuracy               1094     for increased default accuracy
1517   o Use field's DoesFieldChangesEnergy method    1095   o Use field's DoesFieldChangesEnergy method to set relevant member variable
1518                                                  1096 
1519 Nov 7th, 2003  J.Apostolakis - field-V05-02-0    1097 Nov 7th, 2003  J.Apostolakis - field-V05-02-06
1520 ----------------------------                     1098 ----------------------------
1521 - G4ChordFinder                                  1099 - G4ChordFinder
1522    Created new class members for parameters u    1100    Created new class members for parameters used in heuristics:
1523        fFirstFraction            for first st    1101        fFirstFraction            for first step
1524        fFractionLast             fraction of     1102        fFractionLast             fraction of last step, if redoing
1525        fFractionNextEstimate     confidence i    1103        fFractionNextEstimate     confidence in step est from chord
1526        fMultipleRadius           for small ra    1104        fMultipleRadius           for small radii of curve
1527    New method to Print Statistics.               1105    New method to Print Statistics.
1528    Verbosity to enable optional printing of s    1106    Verbosity to enable optional printing of stats in destructor.
1529                                                  1107 
1530 Nov 7th, 2003  J.Apostolakis - field-V05-02-0    1108 Nov 7th, 2003  J.Apostolakis - field-V05-02-05
1531 ----------------------------                     1109 ----------------------------
1532 - G4ChordFinder                                  1110 - G4ChordFinder
1533   o Added simple statistics (with access meth    1111   o Added simple statistics (with access methods)
1534 - test/NTST                                      1112 - test/NTST
1535   o Added new test, taken from D. Williams' e    1113   o Added new test, taken from D. Williams' exampleNTST
1536      modified and maintained by J. Apostolaki << 1114      modified and maintained by J. Apostolakis 
1537                                                  1115 
1538 Nov 5th, 2003  J.Apostolakis - field-V05-02-0    1116 Nov 5th, 2003  J.Apostolakis - field-V05-02-04
1539 ----------------------------                     1117 ----------------------------
1540 - G4FieldManager                                 1118 - G4FieldManager
1541   o Added Get/Set Min/Max imumEpsilonStep        1119   o Added Get/Set Min/Max imumEpsilonStep
1542   o Added fEpsilonMin fEpsilonMax & default t << 1120   o Added fEpsilonMin fEpsilonMax & default to member variables. 
1543    >> Now these can be tailored for different    1121    >> Now these can be tailored for different parts of a detector or setup
1544                                                  1122 
1545 - G4Field G4ElectroMagneticField G4MagneticFi    1123 - G4Field G4ElectroMagneticField G4MagneticField
1546   o Adding the virtual method   DoesFieldChan    1124   o Adding the virtual method   DoesFieldChangeEnergy()  [to be used later]
1547   o So that G4ElectroMagneticField derives fr    1125   o So that G4ElectroMagneticField derives from G4Field
1548     and G4MagneticField derives from G4Electr    1126     and G4MagneticField derives from G4ElectroMagneticField
1549                                                  1127 
1550 - G4MagErrorStepper and derived classes          1128 - G4MagErrorStepper and derived classes
1551     (G4ClassicalRK4 G4SimpleRunge G4ExplicitE    1129     (G4ClassicalRK4 G4SimpleRunge G4ExplicitEuler G4ImplicitEuler G4SimpleHeum)
1552   o the constructors take G4EquationOfMotion     1130   o the constructors take G4EquationOfMotion in place of a G4Mag_EqRhs
1553     as it these applicable to all types of eq << 1131     as it these applicable to all types of equations 
1554      (not just ones for Magnetic field)          1132      (not just ones for Magnetic field)
1555                                                  1133 
1556 - G4EqMagElectricField                           1134 - G4EqMagElectricField
1557   o derives from G4EquationOfMotion              1135   o derives from G4EquationOfMotion
1558                                                  1136 
1559 - G4ChordFinder                                  1137 - G4ChordFinder
1560   o Moved simple constructor to .cc file (tog    1138   o Moved simple constructor to .cc file (together with 'complex' one)
1561   o Changed fDefaultDeltaChord to a constant     1139   o Changed fDefaultDeltaChord to a constant member variable (from class var.)
1562                                                  1140 
1563 Nov 4th, 2003  G.Cosmo - field-V05-02-03         1141 Nov 4th, 2003  G.Cosmo - field-V05-02-03
1564 ----------------------                           1142 ----------------------
1565 Undocumented.                                    1143 Undocumented.
1566                                                  1144 
1567 Nov 4th, 2003  G.Cosmo - field-V05-02-02         1145 Nov 4th, 2003  G.Cosmo - field-V05-02-02
1568 ----------------------                           1146 ----------------------
1569 - G4ChordFinder.cc:                              1147 - G4ChordFinder.cc:
1570   o Fixed compilation problem occuring when G    1148   o Fixed compilation problem occuring when G4DEBUG_FIELD was set.
1571                                                  1149 
1572 Oct 31st, 2003  G.Cosmo - field-V05-02-01        1150 Oct 31st, 2003  G.Cosmo - field-V05-02-01
1573 -----------------------                          1151 -----------------------
1574 - Code cleanup and removal of redundant heade    1152 - Code cleanup and removal of redundant header includes, replaced
1575   where necessary by forward declarations.       1153   where necessary by forward declarations.
1576                                                  1154 
1577 Oct 24th, 2003  G.Cosmo - field-V05-02-00        1155 Oct 24th, 2003  G.Cosmo - field-V05-02-00
1578 -----------------------                          1156 -----------------------
1579 - Migrated to use new G4Exception scheme.        1157 - Migrated to use new G4Exception scheme.
1580 - Updated outputs of unit tests.                 1158 - Updated outputs of unit tests.
1581                                                  1159 
1582 Jun 25th, 2003  J.Apostolakis - field-V05-01-    1160 Jun 25th, 2003  J.Apostolakis - field-V05-01-06
1583 -----------------------------                    1161 -----------------------------
1584 - Suppressed printing of statistics (by defau    1162 - Suppressed printing of statistics (by default) in MagIntegrationDriver.
1585 - Fix for unused variables warning in ChordFi    1163 - Fix for unused variables warning in ChordFinder.
1586                                                  1164 
1587 Jun 24th, 2003  J.Apostolakis - field-V05-01-    1165 Jun 24th, 2003  J.Apostolakis - field-V05-01-05
1588 -----------------------------                    1166 -----------------------------
1589 - Fix for problems introduced in field-V05-01    1167 - Fix for problems introduced in field-V05-01-03:
1590   o G4ChordFinder:                               1168   o G4ChordFinder:
1591     - Fixed unitialised variable for next ste    1169     - Fixed unitialised variable for next step (now used for optimisation).
1592     - Protected assignment of 'fLastStepEstim    1170     - Protected assignment of 'fLastStepEstimate_Unconstrained' in case of
1593       unitialised value.                         1171       unitialised value.
1594                                                  1172 
1595 Jun 21st, 2003  J.Apostolakis - field-V05-01-    1173 Jun 21st, 2003  J.Apostolakis - field-V05-01-04
1596 -----------------------------                    1174 -----------------------------
1597 - G4FieldManager:                                1175 - G4FieldManager:
1598   o Revised into 'slightly' abstract class wi    1176   o Revised into 'slightly' abstract class with one (new) virtual method:
1599       ConfigureForTrack( const G4Track *)        1177       ConfigureForTrack( const G4Track *)
1600     to enable the user to configure it with d    1178     to enable the user to configure it with different accuracy parameters
1601     depending on energy, particle id, volume,    1179     depending on energy, particle id, volume, or other track state.
1602     Currently by default, no such configurati    1180     Currently by default, no such configuration action is undertaken.
1603                                                  1181 
1604 Jun 21st, 2003  J.Apostolakis - field-V05-01-    1182 Jun 21st, 2003  J.Apostolakis - field-V05-01-03
1605 -----------------------------                    1183 -----------------------------
1606 - Revised G4ChordFinder:                         1184 - Revised G4ChordFinder:
1607   * FindNextChord now provides next Step esti    1185   * FindNextChord now provides next Step estimate (for accuracy in Integr.)
1608   * AdvanceChordLimited to use                   1186   * AdvanceChordLimited to use
1609     - above extra argument to FindNextChord      1187     - above extra argument to FindNextChord
1610     - the next Step argument as initial-step     1188     - the next Step argument as initial-step suggested to Accurate Advance
1611 - G4MagIntegratorDriver:                         1189 - G4MagIntegratorDriver:
1612   * Added extra argument to Accurate Advance:    1190   * Added extra argument to Accurate Advance:
1613     hinitial: suggested initial step size        1191     hinitial: suggested initial step size
1614 - Note:                                          1192 - Note:
1615   * Purpose:  performance boost with small/li << 1193   * Purpose:  performance boost with small/limited changes, 
1616     including minor revisions of interfaces.     1194     including minor revisions of interfaces.
1617                                                  1195 
1618 Jun 20th, 2003  J.Apostolakis - field-V05-01-    1196 Jun 20th, 2003  J.Apostolakis - field-V05-01-02
1619 -----------------------------                    1197 -----------------------------
1620 - G4MagIntegratorDriver Quick Advance:           1198 - G4MagIntegratorDriver Quick Advance:
1621   o Took out two unneccessary square roots an    1199   o Took out two unneccessary square roots and two divisions.
1622 - Notes:                                         1200 - Notes:
1623   1) Pure magnetic, electric, spin field test    1201   1) Pure magnetic, electric, spin field test are completed.
1624   2) Purpose:  performance boost with small c    1202   2) Purpose:  performance boost with small changes.
1625                                                  1203 
1626 Jun 20th, 2003  J.Apostolakis - field-V05-01-    1204 Jun 20th, 2003  J.Apostolakis - field-V05-01-01
1627 -----------------------------                    1205 -----------------------------
1628 - G4MagIntegratorDriver:                         1206 - G4MagIntegratorDriver:
1629   o Corrected neglected conversion to <std> f    1207   o Corrected neglected conversion to <std> from "G4std".
1630 - Migrated unit tests to <std>.                  1208 - Migrated unit tests to <std>.
1631                                                  1209 
1632 Jun 19th, 2003  J.Apostolakis - field-V05-01-    1210 Jun 19th, 2003  J.Apostolakis - field-V05-01-00
1633 -----------------------------                 << 1211 ----------------------------- 
1634 - G4ChordFinder:                                 1212 - G4ChordFinder:
1635   o Corrected simple constructor to initialis    1213   o Corrected simple constructor to initialise several member variables
1636     including LastStepEstimate_Unconstrained.    1214     including LastStepEstimate_Unconstrained.
1637 - G4MagIntegratorDriver:                         1215 - G4MagIntegratorDriver:
1638   o Keep simple statistics on number of steps    1216   o Keep simple statistics on number of steps, total error and step size.
1639   o Took out an unneccessary square root (in     1217   o Took out an unneccessary square root (in loop).
1640 - NOTE:    tests field0X are to be migrated.     1218 - NOTE:    tests field0X are to be migrated.
1641   Purpose: fixes, small performance boost, si    1219   Purpose: fixes, small performance boost, simple statistics.
1642                                                  1220 
1643 Apr 2nd, 2003      G. Cosmo - field-V05-00-01    1221 Apr 2nd, 2003      G. Cosmo - field-V05-00-01
1644 ---------------------------                      1222 ---------------------------
1645 - Created .cc files for G4MagneticField and G    1223 - Created .cc files for G4MagneticField and G4ElecroMagneticField.
1646 - Fixed definition of copy constructors in fi    1224 - Fixed definition of copy constructors in fields inheritance chain.
1647 - Moved obsolete method StepWithEst() to priv    1225 - Moved obsolete method StepWithEst() to private in G4RKG3_Stepper,
1648   G4CashKarpRKF45 and G4ClassicalRK4.            1226   G4CashKarpRKF45 and G4ClassicalRK4.
1649 - Cleared strict pedantic warnings.              1227 - Cleared strict pedantic warnings.
1650                                                  1228 
1651 Feb 5th, 2003      G. Cosmo - field-V05-00-00    1229 Feb 5th, 2003      G. Cosmo - field-V05-00-00
1652 ---------------------------                      1230 ---------------------------
1653 - Removed redundant inclusions of PhysicalCon    1231 - Removed redundant inclusions of PhysicalConstants.h or SystemOfUnits.h.
1654   Now using directly CLHEP's headers.            1232   Now using directly CLHEP's headers.
1655                                                  1233 
1656 Dec 12th, 2002     G. Cosmo - field-V04-01-06    1234 Dec 12th, 2002     G. Cosmo - field-V04-01-06
1657 ---------------------------                      1235 ---------------------------
1658 - Moved unused variable 'nStpPr' to debug sec    1236 - Moved unused variable 'nStpPr' to debug section in G4MagIntegratorDriver.cc,
1659   method AccurateAdvance().                      1237   method AccurateAdvance().
1660                                                  1238 
1661 Dec 06th, 2002     G. Cosmo - field-V04-01-05    1239 Dec 06th, 2002     G. Cosmo - field-V04-01-05
1662 ---------------------------                      1240 ---------------------------
1663 - Merged changes by Makoto for migration to n    1241 - Merged changes by Makoto for migration to new G4ApplicationState in
1664   messengers of unit tests.                      1242   messengers of unit tests.
1665                                                  1243 
1666 Nov 29th, 2002     J. Apostolakis - field-V04    1244 Nov 29th, 2002     J. Apostolakis - field-V04-01-04
1667 ---------------------------------                1245 ---------------------------------
1668 Further fixes for unitialised variable - in o    1246 Further fixes for unitialised variable - in other steppers:
1669 G4ExplicitEuler, G4ImplicitEuler, G4ImplicitE    1247 G4ExplicitEuler, G4ImplicitEuler, G4ImplicitEuler
1670                                                  1248 
1671 Large memory leak fix for G4ImplicitEuler, sm    1249 Large memory leak fix for G4ImplicitEuler, small for ExplicitEuler.
1672 Test accuracy requirements for spin adjusted.    1250 Test accuracy requirements for spin adjusted.
1673                                                  1251 
1674 Nov 20th, 2002     J. Apostolakis - field-V04    1252 Nov 20th, 2002     J. Apostolakis - field-V04-01-03
1675 ---------------------------------                1253 ---------------------------------
1676 Further fixes for unitialised variables:         1254 Further fixes for unitialised variables:
1677                                                  1255 
1678 * G4MagIntegratorStepper                         1256 * G4MagIntegratorStepper
1679   -  Created instance variables for number of    1257   -  Created instance variables for number of Integration, State variables
1680                                                  1258 
1681 * G4MagErrorStepper                              1259 * G4MagErrorStepper
1682   -  Utilise number of State variables to ini    1260   -  Utilise number of State variables to initialise full state of Output.
1683                                                  1261 
1684 * G4Mag_SpinEqRhs                                1262 * G4Mag_SpinEqRhs
1685   -  Initialise the values of dydx that we do    1263   -  Initialise the values of dydx that we do not update.
1686                                                  1264 
1687 Note: Undoing these changes and the ones belo << 1265 Note: Undoing these changes and the ones below would enable the user to see 
1688         if undefined values are used in varia << 1266         if undefined values are used in variables that he/she expects to 
1689         have integrated.                         1267         have integrated.
1690       BUT the fix assists us to find truly un    1268       BUT the fix assists us to find truly undefined values elsewhere
1691         -- if they exist -- using valgrind.      1269         -- if they exist -- using valgrind.
1692                                                  1270 
1693 Nov  9th, 2002     J. Apostolakis - field-V04    1271 Nov  9th, 2002     J. Apostolakis - field-V04-01-02
1694 ---------------------------------                1272 ---------------------------------
1695 Fixes to address use of uninitialised variabl    1273 Fixes to address use of uninitialised variable in seting values of FieldTrack
1696 (this was done by design, but was neither ide    1274 (this was done by design, but was neither ideal or always well-behaved.)
1697 Changed:                                         1275 Changed:
1698                                                  1276 
1699 * G4MagIntegratorDriver                          1277 * G4MagIntegratorDriver
1700   - Added instance variables for number of In    1278   - Added instance variables for number of Integration, State variables
1701   - Initialise all State variables of Output     1279   - Initialise all State variables of Output with values from initial variables.
1702   - Only the Integration variables will be in    1280   - Only the Integration variables will be integrated
1703                                                  1281 
1704 * G4ClassicalRK4 and G4MagErrorStepper           1282 * G4ClassicalRK4 and G4MagErrorStepper
1705   - Copy the initial time to intermediate and << 1283   - Copy the initial time to intermediate and output C-vectors, 
1706      in order to provide a zero-eth estimate     1284      in order to provide a zero-eth estimate value.
1707   Note1: Should clean-up this fix, making it     1285   Note1: Should clean-up this fix, making it similar to Driver (above)
1708   Note2: Should *not* be used for time varyin << 1286   Note2: Should *not* be used for time varying field unless created 
1709            with at least 8 integration variab    1287            with at least 8 integration variables
1710 ---------------------------------             << 1288 ---------------------------------  
1711 G4ChordFinder.cc                                 1289 G4ChordFinder.cc
1712   - Correction from zero dChord                  1290   - Correction from zero dChord
1713       which is does not update the Unconstrai    1291       which is does not update the Unconstrained step estimate (state)
1714   - Added instance variables to store number     1292   - Added instance variables to store number of calls and chord-trials
1715       and new print method for 'debugging'       1293       and new print method for 'debugging'
1716                                                  1294 
1717 G4Mag_UsualEqRhs.cc                              1295 G4Mag_UsualEqRhs.cc
1718   - Attempted approximations for speedup  *ov    1296   - Attempted approximations for speedup  *overwritten* by full inverse sqrt.
1719                                                  1297 
1720                                                  1298 
1721 Oct  29th, 2002   J. Apostolakis - test-V04-0    1299 Oct  29th, 2002   J. Apostolakis - test-V04-01-02
1722 --------------------------------                 1300 --------------------------------
1723 - Changed output of tests for small output ch    1301 - Changed output of tests for small output change (GeV->MeV)
1724                                                  1302 
1725 Oct  29th, 2002   J. Apostolakis - test-V04-0    1303 Oct  29th, 2002   J. Apostolakis - test-V04-01-02
1726 --------------------------------                 1304 --------------------------------
1727 - (Only changed and tagged test subdirectory)    1305 - (Only changed and tagged test subdirectory)
1728   Changed tests to use the new method SetChar << 1306   Changed tests to use the new method SetChargeMomentumMass of 
1729   PropagatorInField in order to be ready for  << 1307   PropagatorInField in order to be ready for its full use in 
1730   G4PropagatorInField.                           1308   G4PropagatorInField.
1731   (A key problem at end-July was this non-pre    1309   (A key problem at end-July was this non-preparedness of the unit tests.)
1732                                                  1310 
1733 Jul  24th, 2002   G. Cosmo - field-V04-01-01     1311 Jul  24th, 2002   G. Cosmo - field-V04-01-01
1734 --------------------------                       1312 --------------------------
1735 - G4FieldManager[.hh.cc]: made fDefault_Delta    1313 - G4FieldManager[.hh.cc]: made fDefault_Delta_One_Step_Value and
1736   fDefault_Delta_Intersection_Val normal cons    1314   fDefault_Delta_Intersection_Val normal constants (not static) to
1737   resolve initialisation problems. Coworks wi    1315   resolve initialisation problems. Coworks with tag "geomvol-V04-01-01".
1738   Fixes problem report #383.                     1316   Fixes problem report #383.
1739                                                  1317 
1740 Jul  23rd, 2002   G. Cosmo - field-V04-01-00     1318 Jul  23rd, 2002   G. Cosmo - field-V04-01-00
1741 --------------------------                       1319 --------------------------
1742 - G4MagIntegratorDriver.cc: cleared warning o    1320 - G4MagIntegratorDriver.cc: cleared warning of unused variable.
1743   Protected variable 'nStpPr' with G4DEBUG_FI    1321   Protected variable 'nStpPr' with G4DEBUG_FIELD.
1744 - Updated reference outputs and some other up    1322 - Updated reference outputs and some other updates to unit tests.
1745                                                  1323 
1746 Jun  25th, 2002   J. Apostolakis - field-V04-    1324 Jun  25th, 2002   J. Apostolakis - field-V04-00-05
1747 --------------------------------                 1325 --------------------------------
1748 - G4ChordFinder.cc                               1326 - G4ChordFinder.cc
1749   In NewStep:  fixed case of stepTrial >> ste    1327   In NewStep:  fixed case of stepTrial >> stepTrialOld, to take large multiple - not small;
1750        (it was treated the same as stepTrial     1328        (it was treated the same as stepTrial << old)
1751   Added guard for stepTrial==0.0 in FindNextC    1329   Added guard for stepTrial==0.0 in FindNextChord
1752 - G4MagIntegratorDriver.cc                       1330 - G4MagIntegratorDriver.cc
1753   Added protection against error of 0.0 in Co    1331   Added protection against error of 0.0 in ComputeNewStepSize.
1754                                                  1332 
1755 - G4EquationOfMotion                             1333 - G4EquationOfMotion
1756   Made RightHandSide an inline method         << 1334   Made RightHandSide an inline method 
1757   In GetFieldValue signature of Point is doub    1335   In GetFieldValue signature of Point is double[4], instead of double[3]
1758   Defined G4maximum_number_of_field_component    1336   Defined G4maximum_number_of_field_components as enum
1759                                                  1337 
1760 Jun   7th, 2002   J. Apostolakis - field-V04-    1338 Jun   7th, 2002   J. Apostolakis - field-V04-00-04
1761 --------------------------------                 1339 --------------------------------
1762  - G4Mag_SpinEqRhs.cc                            1340  - G4Mag_SpinEqRhs.cc
1763     o Fix to momentum component of Rhs.          1341     o Fix to momentum component of Rhs.
1764                                                  1342 
1765 May  31st, 2002   J. Apostolakis - field-V04-    1343 May  31st, 2002   J. Apostolakis - field-V04-00-03
1766 --------------------------------                 1344 --------------------------------
1767  - G4MagHelicalStepper.icc                       1345  - G4MagHelicalStepper.icc
1768     o Fix to LinearStep (correcting previous     1346     o Fix to LinearStep (correcting previous fix/cosmetic)
1769  - G4ChordFinder.cc                              1347  - G4ChordFinder.cc
1770     o Corrective behaviour for very small or     1348     o Corrective behaviour for very small or large changes of 'new step'
1771        [observed in complex 3-d fields (purgi    1349        [observed in complex 3-d fields (purging magnet),  or
1772                     approximate equations of     1350                     approximate equations of motion ]
1773  - G4MagIntegratorDriver                         1351  - G4MagIntegratorDriver
1774     o More information in debug printing (tan    1352     o More information in debug printing (tangent cosine, norm)
1775                                                  1353 
1776 May   7th, 2002   J. Apostolakis                 1354 May   7th, 2002   J. Apostolakis
1777 --------------------------------                 1355 --------------------------------
1778 - G4MagIntegratorDriver  -  ( on trunk )         1356 - G4MagIntegratorDriver  -  ( on trunk )
1779   * Fix to update the field track for steps s << 1357   * Fix to update the field track for steps smaller than the chord finder's 
1780 minstep.                                      << 1358 minstep. 
1781                                                  1359 
1782                                                  1360 
1783 April 19th, 2002  J. Apostolakis   (not inclu    1361 April 19th, 2002  J. Apostolakis   (not included in tag field-V04-00-02)
1784 --------------------------------                 1362 --------------------------------
1785 - G4MagIntegratorDriver.hh,cc     (on trunk)     1363 - G4MagIntegratorDriver.hh,cc     (on trunk)
1786   * Bug fix:  last step can now only be trigg    1364   * Bug fix:  last step can now only be triggerred if x+h > x2.
1787   * Debugging methods improved.                  1365   * Debugging methods improved.
1788                                                  1366 
1789 May   7th, 2002   J. Apostolakis - field-V04-    1367 May   7th, 2002   J. Apostolakis - field-V04-00-02
1790 --------------------------------                 1368 --------------------------------
1791  Tag including only two changes below:           1369  Tag including only two changes below:
1792   - Putting aside the other fixes/changes (as << 1370   - Putting aside the other fixes/changes (as the one above) to 
1793 G4MagIntegratorDriver, tagging only the fix t << 1371 G4MagIntegratorDriver, tagging only the fix to update the field track 
1794 for steps smaller than the chord finder's min    1372 for steps smaller than the chord finder's minstep.
1795                                                  1373 
1796 May   7th, 2002   J. Apostolakis                 1374 May   7th, 2002   J. Apostolakis
1797 --------------------------------                 1375 --------------------------------
1798 - G4MagIntegratorDriver  -  **  branch ** on     1376 - G4MagIntegratorDriver  -  **  branch ** on 1.20 **
1799   * Fix to update the field track for steps s << 1377   * Fix to update the field track for steps smaller than the chord finder's 
1800 minstep.                                      << 1378 minstep. 
1801                                                  1379 
1802 May   7th, 2002   J. Apostolakis                 1380 May   7th, 2002   J. Apostolakis
1803 --------------------------------                 1381 --------------------------------
1804 - G4MagIntegratorStepper                         1382 - G4MagIntegratorStepper
1805   * Changed RightHandSide from a virtual meth << 1383   * Changed RightHandSide from a virtual method to an inline (non-virtual) 
1806       method -- it is not and should not be c    1384       method -- it is not and should not be changed by derived classes.
1807                                                  1385 
1808 Mar 28th, 2002  J. Apostolakis - field-V04-00    1386 Mar 28th, 2002  J. Apostolakis - field-V04-00-01
1809 -----------------------                          1387 -----------------------
1810 - Fixed LinearStep in G4MagHelicalStepper (ex << 1388 - Fixed LinearStep in G4MagHelicalStepper (expected unit direction), 
1811     that had not been updated for new integra    1389     that had not been updated for new integration variable (momentum).
1812     --> found in testing helical steppers in  << 1390     --> found in testing helical steppers in BaBar setup, 
1813          in region of negligible field.          1391          in region of negligible field.
1814                                                  1392 
1815 - Changed maximum number of steps in driver,  << 1393 - Changed maximum number of steps in driver, 
1816     halving from 500/order to 250/order.         1394     halving from 500/order to 250/order.
1817                                                  1395 
1818 Mar 28th, 2002  J. Apostolakis                   1396 Mar 28th, 2002  J. Apostolakis
1819 -----------------------                          1397 -----------------------
1820 - Committed directory "OtherField" with examp    1398 - Committed directory "OtherField" with examples of fields,
1821     Delphi, Quadropole etc.                      1399     Delphi, Quadropole etc.
1822                                                  1400 
1823 - Updated outputs of testPropagateMagField fo    1401 - Updated outputs of testPropagateMagField for new version of source,
1824     that has 3rd test case.                      1402     that has 3rd test case.
1825                                                  1403 
1826 - Added new runs and outputs for testProElect << 1404 - Added new runs and outputs for testProElectroMagField, with 
1827     several steppers, and modified test scrip    1405     several steppers, and modified test script test.sh accordingly.
1828                                                  1406 
1829                                                  1407 
1830 Feb  2nd, 2002   V. Grichine                     1408 Feb  2nd, 2002   V. Grichine
1831 ------------------------                         1409 ------------------------
1832 Update of test/field02 to utilise new feature << 1410 Update of test/field02 to utilise new features 
1833   - for Electric Field, to signal that a fiel    1411   - for Electric Field, to signal that a field modifies the energy;
1834   - updating of time by integration, for time    1412   - updating of time by integration, for time dependent fields.
1835                                                  1413 
1836 Jan 10th, 2002  G. Cosmo - field-V04-00-00       1414 Jan 10th, 2002  G. Cosmo - field-V04-00-00
1837 ------------------------                         1415 ------------------------
1838 - Activated G4DEBUG_FIELD in GNUmakefile.        1416 - Activated G4DEBUG_FIELD in GNUmakefile.
1839                                                  1417 
1840 Jan 7th, 2002  J. Apostolakis                    1418 Jan 7th, 2002  J. Apostolakis
1841 -----------------------------                    1419 -----------------------------
1842 - G4MagHelicalStepper.cc: renamed local varia    1420 - G4MagHelicalStepper.cc: renamed local variables "*Momentum*" to "*Velocity*".
1843                                                  1421 
1844 Dec 4th, 2001  G. Cosmo - field-V03-02-08        1422 Dec 4th, 2001  G. Cosmo - field-V03-02-08
1845 -----------------------                          1423 -----------------------
1846 - Fixed interface to virtual functions in the    1424 - Fixed interface to virtual functions in the inheritance chain.
1847   Added 'virtual' qualifier to destructor and    1425   Added 'virtual' qualifier to destructor and GetFieldValue() for subclasses
1848   of G4Field which may act as base class for     1426   of G4Field which may act as base class for user-defined fields.
1849   Modified files: G4MagneticField.hh, G4Unifo    1427   Modified files: G4MagneticField.hh, G4UniformElectricField[.hh.cc],
1850                   G4UniformMagField.hh.          1428                   G4UniformMagField.hh.
1851 - G4ChordFinder.cc: the unphysical curve leng    1429 - G4ChordFinder.cc: the unphysical curve length exception has been moved to
1852   inside #ifdef G4DEBUG_FIELD. Other #ifdef r    1430   inside #ifdef G4DEBUG_FIELD. Other #ifdef renamed to G4DEBUG_FIELD.
1853 - G4LineSection[.hh.cc]: correction for A=B w    1431 - G4LineSection[.hh.cc]: correction for A=B when the distance from P to A
1854   is returned (V.Grichine).                      1432   is returned (V.Grichine).
1855                                                  1433 
1856 Nov 28th, 2001  J. Apostolakis - field-V03-02    1434 Nov 28th, 2001  J. Apostolakis - field-V03-02-07
1857 ------------------------------                   1435 ------------------------------
1858 G4FieldManager                                   1436 G4FieldManager
1859 - Added fFieldChangesEnergy data member and g    1437 - Added fFieldChangesEnergy data member and get/set methods
1860  ( required to allow transportation to know h    1438  ( required to allow transportation to know how to calculate end-time,
1861    enabling the integration of time only for     1439    enabling the integration of time only for electric fields. )
1862                                                  1440 
1863 Nov 28th, 2001  J. Apostolakis - field-V03-02    1441 Nov 28th, 2001  J. Apostolakis - field-V03-02-06
1864 ------------------------------                   1442 ------------------------------
1865 Small fixes only:                                1443 Small fixes only:
1866                                                  1444 
1867 G4CashKarpRKF45                                  1445 G4CashKarpRKF45
1868 - fixed deletion of unassigned pointer/array     1446 - fixed deletion of unassigned pointer/array in destructor. (-> Volodya Velev)
1869                                                  1447 
1870 G4EqMagElectricField                             1448 G4EqMagElectricField
1871 - bug fixed in the formula for inverse veloci    1449 - bug fixed in the formula for inverse velocity             (-> V. Grichine)
1872                                                  1450 
1873 Nov 21st, 2001  G. Cosmo - field-V03-02-05       1451 Nov 21st, 2001  G. Cosmo - field-V03-02-05
1874 ------------------------                         1452 ------------------------
1875 - Protected verbose warnings with G4FIELD_DEB    1453 - Protected verbose warnings with G4FIELD_DEBUG flag in G4ChordFinder.cc
1876   (V.Grichine).                                  1454   (V.Grichine).
1877 - Replaced G4DEBUG with G4DEBUG_FIELD in G4Ma    1455 - Replaced G4DEBUG with G4DEBUG_FIELD in G4MagIntegratorDriver.cc.
1878 - Updates to unit test field02.                  1456 - Updates to unit test field02.
1879                                                  1457 
1880 Nov 13th, 2001  G. Cosmo - field-V03-02-04       1458 Nov 13th, 2001  G. Cosmo - field-V03-02-04
1881 ------------------------                         1459 ------------------------
1882 - Removed warnings on gcc-2.95.2.                1460 - Removed warnings on gcc-2.95.2.
1883 - Included unit tests field01, field02, field    1461 - Included unit tests field01, field02, field03.
1884                                                  1462 
1885 Nov 9th, 2001  J. Apostolakis - field-V03-02-    1463 Nov 9th, 2001  J. Apostolakis - field-V03-02-03
1886 -----------------------------                    1464 -----------------------------
1887 Motivated by the use case of an Electric Fiel    1465 Motivated by the use case of an Electric Field,
1888  - in order to achieve reasonable accuracy in    1466  - in order to achieve reasonable accuracy in time integration,
1889  - and to enable fields that vary with the gl    1467  - and to enable fields that vary with the global time)
1890 we (John Ap. and V. Grichine) changed the fol    1468 we (John Ap. and V. Grichine) changed the following:
1891                                                  1469 
1892 - Modified G4Field to allow the time in the G << 1470 - Modified G4Field to allow the time in the GetFieldValue method 
1893      - as 4th component of the "position" arr    1471      - as 4th component of the "position" array.
1894                                                  1472 
1895 - Modified EquationOfMotion to provide the ti    1473 - Modified EquationOfMotion to provide the time to the GetFieldValue method
1896    of G4Field                                    1474    of G4Field
1897       * as the 4th component of a position /     1475       * as the 4th component of a position / time  4-array
1898       * in place of only position as a 3-arry    1476       * in place of only position as a 3-arry
1899                                                  1477 
1900 - Added the global time as variable to be int << 1478 - Added the global time as variable to be integrated over in the 
1901    case of an Electric Field                     1479    case of an Electric Field
1902                                                  1480 
1903 Support for these modifications is required i    1481 Support for these modifications is required in G4Transportation.
1904                                                  1482 
1905 (Better support will require either              1483 (Better support will require either
1906  - a modification in G4FieldTrack to indicate    1484  - a modification in G4FieldTrack to indicate whether the time has been
1907     integrated or not.                        << 1485     integrated or not.  
1908  - or additionally making the time calculatio    1486  - or additionally making the time calculation a property of G4FieldTrack,
1909     bring in code to do it in from G4Transpor    1487     bring in code to do it in from G4Transportation.)
1910                                                  1488 
1911                                                  1489 
1912 Nov  8th, 2001  J. Apostolakis - field-V03-02    1490 Nov  8th, 2001  J. Apostolakis - field-V03-02-02
1913 ------------------------                         1491 ------------------------
1914 - Introduced several changes in G4MagIntegrat    1492 - Introduced several changes in G4MagIntegratorDriver.
1915                                                  1493 
1916    It now respects its minimum driver step si    1494    It now respects its minimum driver step size in AccurateAdvance.
1917      * whereas before it did not.                1495      * whereas before it did not.
1918                                                  1496 
1919    Modified maximum number of steps, lowering    1497    Modified maximum number of steps, lowering by factor of 10.
1920      -> it should reduce the time spent integ    1498      -> it should reduce the time spent integrating low energy particles,
1921    in some cases where it is unneccessary.       1499    in some cases where it is unneccessary.
1922                                                  1500 
1923    Protected printing of (nearly?) all warnin    1501    Protected printing of (nearly?) all warnings with a G4DEBUG_FIELD  #ifdef.
1924                                                  1502 
1925                                                  1503 
1926 Nov 05th, 2001  G. Cosmo - field-V03-02-01       1504 Nov 05th, 2001  G. Cosmo - field-V03-02-01
1927 ------------------------                         1505 ------------------------
1928 - Fixed trivial warnings on Linux-g++.           1506 - Fixed trivial warnings on Linux-g++.
1929                                                  1507 
1930 Aug 27th, 2001  J. Apostolakis - field-V03-02    1508 Aug 27th, 2001  J. Apostolakis - field-V03-02-00
1931 ------------------------------                   1509 ------------------------------
1932 Tagged last change.                              1510 Tagged last change.
1933 This tag is utilised in transport-V03-02-01 (    1511 This tag is utilised in transport-V03-02-01 (which requires it).
1934                                                  1512 
1935 Aug 16th, 2001  J. Apostolakis                   1513 Aug 16th, 2001  J. Apostolakis
1936 ------------------------------                   1514 ------------------------------
1937 G4ChordFinder:                                   1515 G4ChordFinder:
1938  Added method to erase/reset the state of the    1516  Added method to erase/reset the state of the StepEstimate.
1939  This is unwanted internal state that was car    1517  This is unwanted internal state that was carried between tracks and
1940      events as a side effect.                    1518      events as a side effect.
1941                                                  1519 
1942  Calling this at the start of each track, it     1520  Calling this at the start of each track, it is now possible to
1943  eliminate a non-repeatability that was possi    1521  eliminate a non-repeatability that was possible due to this.
1944     ( It has been observed in particular in v    1522     ( It has been observed in particular in vaccuum. )
1945                                                  1523 
1946 May 23rd, 2001  J. Apostolakis - field-V03-01    1524 May 23rd, 2001  J. Apostolakis - field-V03-01-02
1947 ------------------------------                   1525 ------------------------------
1948 - Added Exception to G4RKG3Stepper constructo    1526 - Added Exception to G4RKG3Stepper constructor: the class does not work
1949                                                  1527 
1950 May 23rd, 2001  J. Apostolakis - field-V03-01    1528 May 23rd, 2001  J. Apostolakis - field-V03-01-01
1951 ------------------------------                   1529 ------------------------------
1952 - Fixed G4FieldManager constructors to give d    1530 - Fixed G4FieldManager constructors to give default values to delta
1953   parameters.                                    1531   parameters.
1954                                                  1532 
1955 - Updated testPropagateSpin (it now compiles) << 1533 - Updated testPropagateSpin (it now compiles), 
1956    and some outputs of testPropagateMagField     1534    and some outputs of testPropagateMagField (1 to 5)
1957                                                  1535 
1958                                                  1536 
1959 Apr 12th, 2001  P. Gumplinger - field-V03-01-    1537 Apr 12th, 2001  P. Gumplinger - field-V03-01-00
1960 -----------------------------                    1538 -----------------------------
1961 - Updated G4Mag_SpinEqRhs.hh and G4Mag_SpinEq    1539 - Updated G4Mag_SpinEqRhs.hh and G4Mag_SpinEqRhs.cc for correction
1962   to spin tracking.                              1540   to spin tracking.
1963                                                  1541 
1964 Apr 04th, 2001  G. Cosmo - field-V03-00-05       1542 Apr 04th, 2001  G. Cosmo - field-V03-00-05
1965 ------------------------                         1543 ------------------------
1966 - G4FieldTrack.icc: fixed pedantic warnings o    1544 - G4FieldTrack.icc: fixed pedantic warnings on Linux-g++.
1967                                                  1545 
1968 Mar 23rd, 2001  J. Apostolakis - field-V03-00    1546 Mar 23rd, 2001  J. Apostolakis - field-V03-00-04
1969 ------------------------------                   1547 ------------------------------
1970 - Electric Field unit test now works: test ru    1548 - Electric Field unit test now works: test runs until completion.
1971    Test outputs saved (on Linux).                1549    Test outputs saved (on Linux).
1972                                                  1550 
1973 - Fixed src/G4UniformElectricField.cc to set     1551 - Fixed src/G4UniformElectricField.cc to set correct field components
1974                                       (compat    1552                                       (compatible with Equation of Motion
1975                                        G4EqMa    1553                                        G4EqMagElectricField )
1976                                                  1554 
1977 - Tidied G4FieldTrack                            1555 - Tidied G4FieldTrack
1978    * deleted obsolete methods Set/Get Momentu    1556    * deleted obsolete methods Set/Get MomentumModulus() and its data member.
1979    * in constructor to set the value of the s << 1557    * in constructor to set the value of the spin to (0.0, 0.0, 0.0) 
1980           if pSpin is null.  (It was undefine    1558           if pSpin is null.  (It was undefined.)
1981                                                  1559 
1982 Mar 23rd, 2001  J. Apostolakis - field-V03-00    1560 Mar 23rd, 2001  J. Apostolakis - field-V03-00-03
1983 ------------------------------                   1561 ------------------------------
1984 - Fixed (hacked) CashKarp to work using Auxil << 1562 - Fixed (hacked) CashKarp to work using Auxiliary Stepper.   
1985                                                  1563 
1986 - Modified G4MagIntegratorStepper             << 1564 - Modified G4MagIntegratorStepper 
1987      to use pointer to G4EquationOfMotion        1565      to use pointer to G4EquationOfMotion
1988             instead of G4Mag_EqRhs               1566             instead of G4Mag_EqRhs
1989                                                  1567 
1990 - Design iteration appears neccessary            1568 - Design iteration appears neccessary
1991                                                  1569 
1992 Mar 23rd, 2001  J. Apostolakis - field-V03-00    1570 Mar 23rd, 2001  J. Apostolakis - field-V03-00-02
1993 ------------------------------                   1571 ------------------------------
1994 - Fixed G4MagHelicalStepper::AdvanceHelix for    1572 - Fixed G4MagHelicalStepper::AdvanceHelix for momentum, allowing
1995     the possibility of (correct) use of all H << 1573     the possibility of (correct) use of all Helical Steppers. 
1996                                                  1574 
1997 - test/testProElectroMagField.cc updated for     1575 - test/testProElectroMagField.cc updated for momentum.
1998     (Not yet updated: Spin tests)                1576     (Not yet updated: Spin tests)
1999                                                  1577 
2000                                                  1578 
2001 Mar 19th, 2001  J. Apostolakis - field-V03-00    1579 Mar 19th, 2001  J. Apostolakis - field-V03-00-01
2002 ------------------------------                   1580 ------------------------------
2003 - Tagging the modification of several classes    1581 - Tagging the modification of several classes to integrate in momentum*c_light
2004     instead of velocity.                      << 1582     instead of velocity.  
2005   Reason for change:  Velocity integration ca    1583   Reason for change:  Velocity integration can result in superluminar
2006     velocities,  due to arithmetic inaccuraci    1584     velocities,  due to arithmetic inaccuracies.
2007   Classes modified:                           << 1585   Classes modified: 
2008     G4FieldTrack,   (Changed components 3,4,5    1586     G4FieldTrack,   (Changed components 3,4,5 of SixVector to Momentum,
2009     G4Mag_EqRhs, G4Mag_UsualEqRhs, G4EqMagEle    1587     G4Mag_EqRhs, G4Mag_UsualEqRhs, G4EqMagElectricField
2010                                                  1588 
2011 Feb 20th, 2001  J. Apostolakis                << 1589 Feb 20th, 2001  J. Apostolakis 
2012                                                  1590 
2013 - Modified several classes to integrate in mo    1591 - Modified several classes to integrate in momentum instead of velocity.
2014                                                  1592 
2015  G4FieldTrack:                                   1593  G4FieldTrack:
2016      Changed components 3,4,5 of SixVector to    1594      Changed components 3,4,5 of SixVector to Momentum,
2017      Modified constructor                        1595      Modified constructor
2018      Added energy calculation to "LoadFromArr    1596      Added energy calculation to "LoadFromArray" method
2019      GetEnergy method is now implemented.     << 1597      GetEnergy method is now implemented. 
2020      Deleted obsolete (old) method names for     1598      Deleted obsolete (old) method names for Curve and Position. New have "Get"
2021                                                  1599 
2022  G4ChordFinder                                   1600  G4ChordFinder
2023      Renamed old-method names of Field Track  << 1601      Renamed old-method names of Field Track to new ones. 
2024                                                  1602 
2025 Jan 29th, 2001  G. Cosmo - field-V03-00-00       1603 Jan 29th, 2001  G. Cosmo - field-V03-00-00
2026 -------------------------                        1604 -------------------------
2027                                                  1605 
2028 - Minor fix to G4MagneticField.hh: added expl    1606 - Minor fix to G4MagneticField.hh: added explicit call to G4Field() in
2029   copy constructor. Fixes report #205.           1607   copy constructor. Fixes report #205.
2030                                                  1608 
2031 Nov 20th, 2000  G. Cosmo - field-V02-00-02       1609 Nov 20th, 2000  G. Cosmo - field-V02-00-02
2032                                                  1610 
2033 - Fixes to remove warnings from "-Wall -ansi     1611 - Fixes to remove warnings from "-Wall -ansi -pedantic" g++ compiler options:
2034   o commented out variables declared and not     1612   o commented out variables declared and not used.
2035   o fixed declaration of variables used befor    1613   o fixed declaration of variables used before being initialised.
2036   o fixed order of initialisation of member d    1614   o fixed order of initialisation of member data in constructors.
2037   o fixed usage of unsigned-int (size_t) for     1615   o fixed usage of unsigned-int (size_t) for array indeces.
2038                                                  1616 
2039 Nov 9th, 2000  G. Cosmo - field-V02-00-01        1617 Nov 9th, 2000  G. Cosmo - field-V02-00-01
2040                                                  1618 
2041 - G4FieldManager: added check on existence of    1619 - G4FieldManager: added check on existence of allocated fChordFinder
2042   in CreateChordFinder(G4MagneticField*) meth    1620   in CreateChordFinder(G4MagneticField*) method.
2043                                                  1621 
2044 Nov 1st, 2000  G. Cosmo - field-V02-00-00        1622 Nov 1st, 2000  G. Cosmo - field-V02-00-00
2045                                                  1623 
2046 - QA code revision and cleanup (+fixes from C    1624 - QA code revision and cleanup (+fixes from CodeWizard filtering):
2047   o Added (private) declarations of copy cons    1625   o Added (private) declarations of copy constructor and assignment operator
2048     where needed.                                1626     where needed.
2049   o Added "const" qualifier to accessor metho    1627   o Added "const" qualifier to accessor methods, wherever needed.
2050   o Added equality check on operator= where n    1628   o Added equality check on operator= where needed.
2051   o Made destructor "virtual" for classes hav    1629   o Made destructor "virtual" for classes having virtual methods,
2052     wherever missing.                            1630     wherever missing.
2053   o Changed virtual functions to non-inline w    1631   o Changed virtual functions to non-inline wherever's the case.
2054   o Changed return value to be "const" pointe    1632   o Changed return value to be "const" pointer to functions:
2055     - G4EquationOfMotion::GetFieldObj()          1633     - G4EquationOfMotion::GetFieldObj()
2056     - G4FieldManager::GetDetectorField()         1634     - G4FieldManager::GetDetectorField()
2057     - G4MagIntegratorDriver::GetStepper()        1635     - G4MagIntegratorDriver::GetStepper()
2058   o Fixed and corrected signature to G4MagInt    1636   o Fixed and corrected signature to G4MagIntegratorDriver::SetHmin().
2059   o Added "inline" qualifier to methods' decl    1637   o Added "inline" qualifier to methods' declarations.
2060   o General cosmetics                            1638   o General cosmetics
2061                                                  1639 
2062 Jun 2nd, 2000  J. Apostolakis                    1640 Jun 2nd, 2000  J. Apostolakis
2063 - G4FieldManager[.hh.icc]                        1641 - G4FieldManager[.hh.icc]
2064   o Added DeltaIntersection and DeltaOneStep     1642   o Added DeltaIntersection and DeltaOneStep to FieldManager: added
2065     Get/Set methods and SetAccuraciesWithDelt    1643     Get/Set methods and SetAccuraciesWithDeltaOneStep().
2066                                                  1644 
2067 May 31st, 2000  J. Apostolakis - field-V01-01    1645 May 31st, 2000  J. Apostolakis - field-V01-01-03
2068                                                  1646 
2069 include/G4FieldManager.hh,icc                    1647 include/G4FieldManager.hh,icc
2070   o Moved Delta Intersection and Delta One St    1648   o Moved Delta Intersection and Delta One Step to FieldManager
2071      (from Propagator in Field),  to allow th    1649      (from Propagator in Field),  to allow them to differ over the detector.
2072                                                  1650 
2073 May 11th, 2000  J. Apostolakis - field-V01-01    1651 May 11th, 2000  J. Apostolakis - field-V01-01-02
2074                                                  1652 
2075 - G4ChordFinder[.hh.cc]                          1653 - G4ChordFinder[.hh.cc]
2076   o Modified method for finding new trial ste    1654   o Modified method for finding new trial step.
2077     New method assumes a quadratic relationsh    1655     New method assumes a quadratic relationship between step-length and d_chord:
2078             d_chord  proportional  to  step-l    1656             d_chord  proportional  to  step-lenght ^ 2
2079   o Added two small refinement in order to av    1657   o Added two small refinement in order to avoid unneccesary extra step due to
2080     small numerical inaccuracies in estimatio    1658     small numerical inaccuracies in estimation:
2081       FindNextChord                              1659       FindNextChord
2082           to first step       use  (1-0.001)     1660           to first step       use  (1-0.001) * last-step-estimate
2083       New Step:                                  1661       New Step:
2084           to subsequent step  use    trial_st    1662           to subsequent step  use    trial_step = 0.98 * estimate
2085                                                  1663 
2086 May 10th, 2000  G. Cosmo                         1664 May 10th, 2000  G. Cosmo
2087                                                  1665 
2088 - G4MagneticField.hh: minor fix to dummy impl    1666 - G4MagneticField.hh: minor fix to dummy implementation of assignment
2089   operator.                                      1667   operator.
2090                                                  1668 
2091 May    9th, 2000   J. Apostolakis - field-V01    1669 May    9th, 2000   J. Apostolakis - field-V01-01-01
2092                                                  1670 
2093 - G4MagErrorStepper:                          << 1671 - G4MagErrorStepper: 
2094     Modified DistChord to check whether the c    1672     Modified DistChord to check whether the chord endpoint are the same point.
2095                                                  1673 
2096 - G4RKG3_Stepper:                                1674 - G4RKG3_Stepper:
2097     Deleted error message from StepNoErr, as     1675     Deleted error message from StepNoErr, as it is used in Stepper.
2098                                                  1676 
2099 - G4MagIntegratorDriver:                         1677 - G4MagIntegratorDriver:
2100     Changed the condition for the debug outpu    1678     Changed the condition for the debug output  (~cosmetic)
2101                                                  1679 
2102                                                  1680 
2103 April 27th, 2000   G. Cosmo                      1681 April 27th, 2000   G. Cosmo
2104                                                  1682 
2105 - Reorganised comments for the Software Refer    1683 - Reorganised comments for the Software Reference Manual.
2106 - Moved inlined definition to .icc files, whe    1684 - Moved inlined definition to .icc files, where needed.
2107   Created: G4ChordFinder.icc and G4FieldManag    1685   Created: G4ChordFinder.icc and G4FieldManager.icc.
2108                                                  1686 
2109 April 13th, 2000   J. Apostolakis - field-V01    1687 April 13th, 2000   J. Apostolakis - field-V01-01-00
2110                                                  1688 
2111 - Modified signature to function DumbStepper(    1689 - Modified signature to function DumbStepper() in classes:
2112   G4HelixExplicitEuler, G4HelixHeum, G4HelixI    1690   G4HelixExplicitEuler, G4HelixHeum, G4HelixImplicitEuler,
2113   G4HelixSimpleRunge and G4MagHelicalStepper.    1691   G4HelixSimpleRunge and G4MagHelicalStepper.
2114 - Modified signature and implementation of fu    1692 - Modified signature and implementation of function MagFieldEvaluate()
2115   in G4MagHelicalStepper, to use Field (as Th    1693   in G4MagHelicalStepper, to use Field (as ThreeVector) in place of dydx.
2116 - Made Richardson extrapolation optional (it     1694 - Made Richardson extrapolation optional (it is unclear if
2117   it offers benefit) in G4MagHelicalStepper.     1695   it offers benefit) in G4MagHelicalStepper.
2118 - Updated unit test testPropagateMagField and    1696 - Updated unit test testPropagateMagField and reference output.
2119 - G4LineSection: fixes to prevent divisions b    1697 - G4LineSection: fixes to prevent divisions by 0. and sqrt(<0)
2120   (V.Grichine).                                  1698   (V.Grichine).
2121                                                  1699 
2122 January  19th, 2000   G. Cosmo - field-V01-00    1700 January  19th, 2000   G. Cosmo - field-V01-00-00
2123                                                  1701 
2124 Syncronized versioning of files with HEAD aft    1702 Syncronized versioning of files with HEAD after ISO-C++ migration
2125 (essentially CVS header changes).                1703 (essentially CVS header changes).
2126                                                  1704 
2127 December  7th, 1999   J. Apostolakis - field-    1705 December  7th, 1999   J. Apostolakis - field-V00-01-01a
2128                                                  1706 
2129 For negative or very small curve lengths (h)     1707 For negative or very small curve lengths (h) we suppress writing an error
2130 (about the distance of endpoints being furthe    1708 (about the distance of endpoints being further than the curve length),
2131 as it is meaningless.                            1709 as it is meaningless.
2132                                                  1710 
2133 November 23rd, 1999   J. Apostolakis - field-    1711 November 23rd, 1999   J. Apostolakis - field-V00-01-01
2134                                                  1712 
2135 Tagged this sub-category's state in geometry-    1713 Tagged this sub-category's state in geometry-V00-01-01
2136                                                  1714 
2137                                                  1715 
2138 July      6th, 1999   J. Apostolakis - field-    1716 July      6th, 1999   J. Apostolakis - field-01-00-07
2139                                                  1717 
2140 These fixes and those in field-01-00-06 and f    1718 These fixes and those in field-01-00-06 and field-01-00-06a all come
2141 from the need to cope with the imprecision of    1719 from the need to cope with the imprecision of the integration, and its
2142 interaction with paths that are rather straig << 1720 interaction with paths that are rather straight. 
2143                                                  1721 
2144 G4MagIntegrationDriver:                       << 1722 G4MagIntegrationDriver: 
2145  i) AccurateAdvance now that the chord distan    1723  i) AccurateAdvance now that the chord distance is smaller than the curve len-
2146 gth (times 1+epsilon).                           1724 gth (times 1+epsilon).
2147                                                  1725 
2148 ii) OneGoodStep and QuickAdvance considers th    1726 ii) OneGoodStep and QuickAdvance considers the error of the velocity as well as
2149 the error of the position - and ensure that b    1727 the error of the position - and ensure that both relative errors are within
2150 the "eps" maximum given.                         1728 the "eps" maximum given.
2151                                                  1729 
2152 G4ChordFinder:                                   1730 G4ChordFinder:
2153   Having found that the curve_length vs ABdis    1731   Having found that the curve_length vs ABdist disrepancy has its basis in
2154 the imprecision of the integration:              1732 the imprecision of the integration:
2155   i) Modified the exception in this case to h    1733   i) Modified the exception in this case to happen only for very large
2156    relative disrepancies ( 10 * eps ).           1734    relative disrepancies ( 10 * eps ).
2157  ii) Undertaken a default corrective action i    1735  ii) Undertaken a default corrective action in all other cases
2158 Note that this disrepancy only happens for ve    1736 Note that this disrepancy only happens for very straight sections of track -
2159 ie step lengths much smaller than the curvatu    1737 ie step lengths much smaller than the curvature of the track.
2160                                                  1738 
2161 July      1st, 1999   J. Apostolakis - field-    1739 July      1st, 1999   J. Apostolakis - field-01-00-06a
2162                                                  1740 
2163 In order to cope with the anomalous condition    1741 In order to cope with the anomalous condition created by candidate fix
2164 in G4PropagatorInField,  we ensure that the f    1742 in G4PropagatorInField,  we ensure that the fraction_AE is always between
2165 0 and 1.0.  (giving it a default value of 0.5    1743 0 and 1.0.  (giving it a default value of 0.5 whenever it is wrong).
2166 ( in G4ChordFinder::ApproxCurvePointV )          1744 ( in G4ChordFinder::ApproxCurvePointV )
2167                                                  1745 
2168 June     29th, 1999   J. Apostolakis - field-    1746 June     29th, 1999   J. Apostolakis - field-01-00-06
2169                                                  1747 
2170   I re-instated a check on whether the input     1748   I re-instated a check on whether the input distance along the curve between
2171 the two input curve points is truly greater t    1749 the two input curve points is truly greater than their linear distance.
2172 ( in G4ChordFinder::ApproxCurvePointV )          1750 ( in G4ChordFinder::ApproxCurvePointV )
2173                                                  1751 
2174 The condition that prints out a warning messa    1752 The condition that prints out a warning message has been altered to
2175 take into account the case of a very small fi << 1753 take into account the case of a very small final interval. 
2176 ( in G4MagInt_Driver::AccurateAdvance )          1754 ( in G4MagInt_Driver::AccurateAdvance )
2177                                                  1755 
2178 June     ??th, 1999   J. Apostolakis - field-    1756 June     ??th, 1999   J. Apostolakis - field-01-00-05
2179                                                  1757 
2180 The condition that prints out a warning messa << 1758 The condition that prints out a warning message was changed to delete 
2181 an incorrect comparison.                      << 1759 an incorrect comparison. 
2182 ( in G4MagInt_Driver::AccurateAdvance )          1760 ( in G4MagInt_Driver::AccurateAdvance )
2183                                                  1761 
2184 April    19th, 1999   J. Apostolakis - field-    1762 April    19th, 1999   J. Apostolakis - field-01-00-04
2185                                                  1763 
2186 G4MagErrorStepper: Cosmetic changes to name o    1764 G4MagErrorStepper: Cosmetic changes to name of data members
2187                                                  1765 
2188 March     4th, 1999   J. Apostolakis - field-    1766 March     4th, 1999   J. Apostolakis - field-01-00-03
2189                                                  1767 
2190 Corrected delete statement of arrays to use '    1768 Corrected delete statement of arrays to use 'delete[]' instead of simple delete
2191 in destructors of 2 steppers (G4CashKarpRKF45    1769 in destructors of 2 steppers (G4CashKarpRKF45, G4SimpleHeum)
2192                                                  1770 
2193 February 17th, 1999   J. Apostolakis -  field    1771 February 17th, 1999   J. Apostolakis -  field-01-00-02
2194                                                  1772 
2195  Moved G4PropagatorInField files to geometry/ << 1773  Moved G4PropagatorInField files to geometry/volumes. 
2196  Updated GNUmakefile not to depend on geometr    1774  Updated GNUmakefile not to depend on geometry/volumes anymore.
2197    -> the known circular dependency is remove    1775    -> the known circular dependency is removed
2198                                                  1776 
2199                                                  1777 
2200 February 12th, 1999   J. Apostolakis -  field    1778 February 12th, 1999   J. Apostolakis -  field-spin1-works1     (act Feb17)
2201                                                  1779 
2202   A tag that contains the first version that     1780   A tag that contains the first version that worked with spin (in Peter G.'s
2203 directory).   G4PropagateInSpin is still in t    1781 directory).   G4PropagateInSpin is still in this version.  A small change
2204 in a branch of the header file was needed.    << 1782 in a branch of the header file was needed. 
2205                                                  1783 
2206                                                  1784 
2207 February 10th, 1999   J. Apostolakis          << 1785 February 10th, 1999   J. Apostolakis 
2208                                                  1786 
2209 All the following changes are needed for ener    1787 All the following changes are needed for energy integration also:
2210                                                  1788 
2211 G4ChordFinder now passes to the constructed d    1789 G4ChordFinder now passes to the constructed driver the number of variables.
2212 Because of the need for the stepper to know a    1790 Because of the need for the stepper to know about it in its Abstract interface
2213                                                  1791 
2214 -> Moved theNumberOfVariables  from derived c    1792 -> Moved theNumberOfVariables  from derived class G4MagErrorStepper
2215                                to base class     1793                                to base class G4MagIntegratorStepper
2216                                                  1794 
2217 As a consequense the classes that derived fro    1795 As a consequense the classes that derived from G4MagIntegratorStepper directly
2218 were changed: G4CashKarpRKF45, G4MagHelicalSt << 1796 were changed: G4CashKarpRKF45, G4MagHelicalStepper, 
2219                                                  1797 
2220                                                  1798 
2221 February  9th, 1999    J. Apostolakis            1799 February  9th, 1999    J. Apostolakis
2222                                                  1800 
2223 Equation of Motion:                              1801 Equation of Motion:
2224 G4MagEqRhs.hh  Made SetChargeMomentumMass vir    1802 G4MagEqRhs.hh  Made SetChargeMomentumMass virtual, so that G4Mag_SpinEqRhs
2225                  can initialise its constants << 1803                  can initialise its constants too. 
2226                                                  1804 
2227                                                  1805 
2228 February  9th, 1999   P. Gumplinger              1806 February  9th, 1999   P. Gumplinger
2229                                                  1807 
2230 Added Equation of Motion for Spin in Magnetic    1808 Added Equation of Motion for Spin in Magnetic Field.
2231                                                  1809 
2232                                                  1810 
2233 February 17th, 1999   J. Apostolakis  -  fiel    1811 February 17th, 1999   J. Apostolakis  -  field-01-00-01
2234   --->  date is correct, made sure that tag d    1812   --->  date is correct, made sure that tag does not include above fixes!
2235                                               << 1813   
2236  Moved G4PropagatorInField files to geometry/ << 1814  Moved G4PropagatorInField files to geometry/volumes. 
2237  Updated GNUmakefile not to depend on geometr    1815  Updated GNUmakefile not to depend on geometry/volumes anymore.
2238    -> the known circular dependency is remove    1816    -> the known circular dependency is removed
2239                                                  1817 
2240                                                  1818 
2241 ---------------------------------------------    1819 ---------------------------------------------------------------------------
2242     ------    Geant 4  Production Release   -    1820     ------    Geant 4  Production Release   ------------
2243 ---------------------------------------------    1821 --------------------------------------------------------------------------
2244 Nov   19th, 1998   J. Apostolakis  -  field-0    1822 Nov   19th, 1998   J. Apostolakis  -  field-00-04-01head ===> R+D version only
2245                                                  1823 
2246  G4PropagatorInField files modified:             1824  G4PropagatorInField files modified:
2247                                                  1825 
2248    - to store the last safety computed and it    1826    - to store the last safety computed and its origin.
2249    - to give them to a requester                 1827    - to give them to a requester
2250 ---------------------------------------------    1828 ------------------------------------------------------------------
2251                                                  1829 
2252 Nov   19th, 1998   J. Apostolakis  -  field-0    1830 Nov   19th, 1998   J. Apostolakis  -  field-00-03-03b
2253                                                  1831 
2254  Subtle fix to interface of G4UniformMagField << 1832  Subtle fix to interface of G4UniformMagField::GetFieldValue  
2255          ( that tripped Visual C++ )             1833          ( that tripped Visual C++ )
2256                                                  1834 
2257  G4PropagatorInField:  added printing method     1835  G4PropagatorInField:  added printing method for verboseness.
2258                                                  1836 
2259 Nov   19th, 1998   J. Apostolakis  -  field-0    1837 Nov   19th, 1998   J. Apostolakis  -  field-00-03-03a
2260                                                  1838 
2261    Steppers:  Fixed instance variables constr    1839    Steppers:  Fixed instance variables construction (SimpleRunge)
2262               and clash of names in CashKarp:    1840               and clash of names in CashKarp::StepWithEstimate
2263                                                  1841 
2264    Added post-const to all Field classes for     1842    Added post-const to all Field classes for
2265            void GetFieldValue(const G4double     1843            void GetFieldValue(const G4double yTrack[] ,
2266                                  G4double B[]    1844                                  G4double B[]      ) const ;
2267                                                  1845 
2268    Added SetFieldValue methods to UniformMagF    1846    Added SetFieldValue methods to UniformMagField
2269                                                  1847 
2270    Added GetConstantFieldValue() methods to U    1848    Added GetConstantFieldValue() methods to Uniform Mag & Electric Fields
2271                                                  1849 
2272                                                  1850 
2273 Nov   19th, 1998   J. Apostolakis  -  field-0    1851 Nov   19th, 1998   J. Apostolakis  -  field-00-03-03
2274                                                  1852 
2275    Fixes to Propagate and Steppers               1853    Fixes to Propagate and Steppers
2276                                                  1854 
2277 Nov   19th, 1998   J. Apostolakis  -  field-0    1855 Nov   19th, 1998   J. Apostolakis  -  field-00-03-02
2278                                                  1856 
2279    Minor corrections  (???)                      1857    Minor corrections  (???)
2280                                                  1858 
2281 Nov   19th, 1998   J. Apostolakis  -  field-0    1859 Nov   19th, 1998   J. Apostolakis  -  field-00-03-02
2282                                               << 1860  
2283    Major development to allow Electric Field     1861    Major development to allow Electric Field
2284                                               << 1862    
2285                                                  1863 
2286                                                  1864 
2287 June  17th, 1998   J. Apostolakis  -  magfiel    1865 June  17th, 1998   J. Apostolakis  -  magfield-06-03
2288                                                  1866 
2289  Modified Files:                                 1867  Modified Files:
2290         include/G4PropagatorInField.hh           1868         include/G4PropagatorInField.hh
2291             src/G4PropagatorInField.cc           1869             src/G4PropagatorInField.cc
2292            test/testPropagateInField.cc          1870            test/testPropagateInField.cc
2293 ---------------------------------------------    1871 ----------------------------------------------------------------------
2294                                                  1872 
2295  1)  Added an assertion after each call to Lo << 1873  1)  Added an assertion after each call to LocateGlobalPointAndSetup. 
2296      It checks that the located volume is equ    1874      It checks that the located volume is equal to the current volume.
2297      If this check fails, the Propagator does    1875      If this check fails, the Propagator does not know how to continue.
2298                                                  1876 
2299  2)  Added an argument  to ComputeStep method    1877  2)  Added an argument  to ComputeStep method of G4PropagatorInField.
2300   The new volume argument is used to check th    1878   The new volume argument is used to check the current volume during the step.
2301                                                  1879 
2302  3)  When G4Navigator's ComputeStep returned     1880  3)  When G4Navigator's ComputeStep returned  stepLength==stepRequested,  this
2303 used to be treated as a failure to intersect.    1881 used to be treated as a failure to intersect.  This is incorrect.
2304                                                  1882 
2305     stepLength==stepRequested is an intersect    1883     stepLength==stepRequested is an intersection,
2306       so I am now treating it as such in each    1884       so I am now treating it as such in each comparison (of 3).
2307       Ignoring it causes problems, including     1885       Ignoring it causes problems, including volume being skipped.
2308       --> but treating it as an intersection     1886       --> but treating it as an intersection used to cause problems too ??
2309                                                  1887 
2310                                                  1888 
2311 May    7th, 1998    J. Apostolakis  -  magfie    1889 May    7th, 1998    J. Apostolakis  -  magfield-06-02-helix01
2312                                                  1890 
2313 - Tag includes new version of G4ChordFinder (    1891 - Tag includes new version of G4ChordFinder (not used by W.Wander).
2314                                                  1892 
2315                                                  1893 
2316 May    7th, 1998    W. Wander     (recorded/c    1894 May    7th, 1998    W. Wander     (recorded/commited by  J. Apostolakis)
2317                                                  1895 
2318 - New "helical" RK steppers that move in heli    1896 - New "helical" RK steppers that move in helical segments, not linear.
2319     * Several changes to add steppers         << 1897     * Several changes to add steppers 
2320                                                  1898 
2321  Modified Files:                                 1899  Modified Files:
2322         G4MagErrorStepper.hh                  << 1900         G4MagErrorStepper.hh 
2323         G4MagErrorStepper.cc                  << 1901         G4MagErrorStepper.cc 
2324            added Helical stepping methods to     1902            added Helical stepping methods to this general ABC.
2325                                               << 1903         
2326         G4MagIntegratorStepper.hh                1904         G4MagIntegratorStepper.hh
2327            made RightHandSide virtual   (this    1905            made RightHandSide virtual   (this will be reversed very soon)
2328                                                  1906 
2329         testPropagateMagField.cc                 1907         testPropagateMagField.cc
2330            Test of Helical stepping functiona    1908            Test of Helical stepping functionality added.
2331                                               << 1909            
2332  Added Files for new Helical RK steppers, der    1910  Added Files for new Helical RK steppers, deriving from G4MagErrorStepper:
2333         G4HelixExplicitEuler.cc  ( and .hh )     1911         G4HelixExplicitEuler.cc  ( and .hh )
2334         G4HelixHeum.cc                           1912         G4HelixHeum.cc
2335         G4HelixImplicitEuler.cc                  1913         G4HelixImplicitEuler.cc
2336         G4HelixSimpleRunge.cc                 << 1914         G4HelixSimpleRunge.cc  
2337                                                  1915 
2338  Added File for implementation:                  1916  Added File for implementation:
2339         G4MagErrorStepper.icc                    1917         G4MagErrorStepper.icc
2340                                                  1918 
2341                                                  1919 
2342 May    7th, 1998    J. Apostolakis   -  magfi    1920 May    7th, 1998    J. Apostolakis   -  magfield-06-01
2343                                                  1921 
2344 - added small changes to                      << 1922 - added small changes to 
2345     * G4ChordFinder:           methods to get    1923     * G4ChordFinder:           methods to get/set IntegratorDriver
2346     * G4MagIntegratorDriver:   made OneGoodSt    1924     * G4MagIntegratorDriver:   made OneGoodStep method public
2347 - created the file.                              1925 - created the file.
                                                   >> 1926