Geant4 Cross Reference

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Geant4/geometry/magneticfield/History

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Diff markup

Differences between /geometry/magneticfield/History (Version 11.3.0) and /geometry/magneticfield/History (Version 9.4)


  1 # Category field History                       <<   1 $Id: History,v 1.153 2010/09/14 07:57:13 gcosmo Exp $
                                                   >>   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                                                << 
449 Nov 17, 2017 J. Apostolakis             - fiel << 
450 ---------------------------                    << 
451 - G4ChordFinder: Reinstated old driver G4MagIn << 
452     with G4DormandPrince745 (5th order) in G4C << 
453     2nd constructor (with magnetic field.)     << 
454   ( Reverses change made in field-V10-03-27 )  << 
455                                                << 
456 Nov 16, 2017 J. Apostolakis             - fiel << 
457 ---------------------------                    << 
458 - Suppressed statistics printing in G4ChordFin << 
459    ( G4IntegrationDriver and G4FSALIntegration << 
460    protecting them by verbosity flags.         << 
461                                                << 
462 - Minor fix to initialise scalar data member i << 
463   G4RK547FEq1, G4RK547FEq2 and G4RK547FEq3.    << 
464   Fixes coverity issues 97886, 97888 and 97889 << 
465                                                << 
466                                                << 
467 Nov 14, 2017 J. Apostolakis             - fiel << 
468 ---------------------------                    << 
469 - Suppressed extra verbosity in G4ChordFinder. << 
470 - Fix in G4FSALDormandPrince745 for unitialise << 
471   Initialise ak8[], ak9[] in constructor. This << 
472   memory allocation, without deletion - i.e. a << 
473 - Initialise fLastStepLength and/or fAuxSteppe << 
474   in constructors of G4DormandPrince745 and G4 << 
475   Coverity issues: 67394 (G4FSALDormandPrince7 << 
476                    67391     (G4DormandPrince7 << 
477                                                << 
478 Nov 14, 2017 J. Apostolakis             - fiel << 
479 ---------------------------             - fiel << 
480 - G4ChordFinder: changes in default stepper &  << 
481   in which only a magnetic field is provided ( << 
482                                                << 
483   * Reinstated G4DormandPrince745 (5th order)  << 
484    (corrected -23, which missed to initialise  << 
485                                                << 
486   * New templated driver G4IntegrationDriver i << 
487     the simple constuctors of G4ChordFinder an << 
488     which only require a (pure) magnetic field << 
489                                                << 
490   Additional information and details:          << 
491   * New optional parameter to constructor of G << 
492     allow to create an FSAL stepper and corres << 
493     This aims to reuse some derivatives, thus  << 
494     of derivatives and thus field evaluations. << 
495                                                << 
496   * The templated 'driver' classes, available  << 
497     G4ChordFinder's 2nd constructor, are used  << 
498     class:                                     << 
499      - G4IntegrationDriver      for non-FSAL   << 
500      - G4FSALIntegrationDriver  for FSAL-capab << 
501     These make non-virtual calls to the steppe << 
502                                                << 
503 - First fix in G4FSALDormandPrince745 for memo << 
504   delete[] fInitialDyDx in destructor. Coverit << 
505                                                << 
506 ---------------------------------------------- << 
507 Multiple tags (below) were to better test step << 
508 Date   Tagger         Tag name        Stepper  << 
509 ============================================== << 
510 Nov 3, D. Sorokin     field-V10-03-25 G4FSALBo << 
511 Nov 3, J. Apostolakis field-V10-03-24 G4FSALDo << 
512 Nov 2, J. Apostolakis field-V10-03-23 G4Dorman << 
513 Nov 2, J. Apostolakis field-V10-03-22 G4RK547F << 
514 ---------------------------------------------- << 
515 Glossary of drivers:                           << 
516    the FSAL driver = using G4FSALIntegrationDr << 
517    the new  driver = using G4IntegrationDriver << 
518 ============================================== << 
519                                                << 
520 Nov  2, 2017 D. Sorokin                 - fiel << 
521 ---------------------------------------        << 
522 - Added new steppers G4RK547FEq{1,2,3} which i << 
523   Runge-Kutta 4,5 pairs with:                  << 
524      - FSAL property (return derivative at end << 
525      - stable equilibrium states ( improved ha << 
526          integration: better stability in choo << 
527   Each one can be used with all existing Runge << 
528      - G4FSALIntegrationDriver, using its FSAL << 
529      - G4IntegrationDriver    without its FSAL << 
530      - the original G4MagInt_Driver, also igno << 
531                                                << 
532 - Reinstated G4DormandPrince745  ( known widel << 
533   the default RK method in G4ChordFinder for p << 
534     ( Withdrew G4BogackiShampine45. )  J. Apos << 
535                                                << 
536 Nov  1, 2017 J. Apostolakis             - fiel << 
537 ---------------------------                    << 
538 - Made G4BogackiShampine45 the default RK meth << 
539    for pure magnetic fields.                   << 
540                                                << 
541 Oct 30, 2017 D. Sorokin/J.Apostolakis   - fiel << 
542 ---------------------------------------        << 
543 - add GetStepper method to G4VIntegrationDrive << 
544                                                << 
545 Oct 20, 2017 D. Sorokin                 - fiel << 
546 ---------------------------------------        << 
547 Introduced base class for any driver algorithm << 
548 New concrete classes added:                    << 
549 - G4IntegrationDriver: implementation of templ << 
550   for non-fsal explicit Runge-Kutta steppers   << 
551 - G4FSALIntegrationDriver: implementation of d << 
552   FSAL explicit Runge-Kutta steppers.          << 
553 Existing class G4MagInt_Drv remains, deriving  << 
554                                                << 
555 - Expanded testing in testProElectroMagField ( << 
556    ( J. Apostolakis)                           << 
557                                                << 
558 Oct 13, 2017 D. Sorokin                 - fiel << 
559 ---------------------------------------        << 
560 - add G4FieldUtils.hh, G4FieldUtils.icc, G4Fie << 
561   utilities to extract data from arrays in con << 
562   magneticfield integration.                   << 
563                                                << 
564 Oct 13, 2017 G. Cosmo                   - fiel << 
565 ---------------------------------------        << 
566 - G4NystromRK4: use consistenly G4 types for d << 
567                                                << 
568 Aug 31, 2017 J. Apostolakis             - fiel << 
569 ---------------------------------------        << 
570 - Made G4DormandPrince457 the default Stepper  << 
571   G4ChordFinder - when a driver/stepper is not << 
572                                                << 
573 Aug 31, 2017 J. Apostolakis             - fiel << 
574 ---------------------------------------        << 
575 - G4NystromRK4: used caching of momentum magni << 
576   to reduce overhead of fix in field-V10-03-10 << 
577                                                << 
578 Aug 25, 2017 J. Apostolakis             - fiel << 
579 ---------------------------------------        << 
580 - G4MagInt_Driver: added GetEquationOfMotion m << 
581   code with future develoment.                 << 
582                                                << 
583 Aug 24, 2017 D.Sorokin & J. Apostolakis - fiel << 
584 ---------------------------------------        << 
585 - G4NystromRK4: correction in call to getField << 
586     ( Spotted by D. Sorokin )                  << 
587   Also small cleanup of testing code into 2 sm << 
588     ( J. Apostolakis )                         << 
589                                                << 
590 Aug 23, 2017 J.Apostolakis              - fiel << 
591 --------------------------                     << 
592 - G4NystromRK4 - Fix the caching of momentum,  << 
593   Fixes issue reported by ALICE ( problem repo << 
594   Thanks to Ruben Shahoyan for identifying and << 
595 - Temporarly made G4NystromRK4 the default Ste << 
596   constructor (to ensure adequate testing).    << 
597                                                << 
598 Jul 04, 2017 J.Apostolakis             - field << 
599 --------------------------                     << 
600 - G4DormandPrinceRK78: initialise fLastStepLen << 
601   members in constructor. Coverity issue: 6739 << 
602   Improved description and reference to origin << 
603 - G4MagIntegratorDriver: initialised fNoCalls  << 
604                                                << 
605 Jul 03, 2017 J.Apostolakis             - field << 
606 --------------------------                     << 
607 - G4FSALBogackiShampline45: initialise 'bi[][] << 
608   in method PrepareConstants() called by const << 
609     ( Similar to G4BogackiShampine => seek con << 
610   Small fix: initialise fAuxStepper to nullptr << 
611     ( Part of Coverity issue 67394 )           << 
612 - G4DormandPrinceRK56: fix for significant mem << 
613   space in SetupInterpolate_low(), apparently  << 
614   because it was initialised in each use, not  << 
615   Improved initialisation of ak10, 11, 12 (mov << 
616   and fixed small memory leak (added deletion  << 
617 - G4MagIntegratorStepper: initialise fNoRHSCal << 
618   ( fIntegrationOrder is not yet used widely - << 
619   Coverity issue 67392.                        << 
620 - G4VFSALIntegrationStepper: initialise counte << 
621 - G4BogackiShampine23: initialised fIsFSAL, fI << 
622   Suppressed obsolete virtual method isFSAL,   << 
623   Deleted duplicate virtual method 'isFSAL()'. << 
624   now exists in base class G4MagIntegratorStep << 
625   Made copy constructor and equal operator pri << 
626   Added explanatory comments in source file; c << 
627   (it calculates derivative @ endpoint. )      << 
628 - Several steppers ( G4DoLoMcPriRK34, G4FSALBo << 
629   G4DormandPrince745, G4BogackiShampine45 ): i << 
630   fAuxStepper data members in constructor.     << 
631   Coverity issues: 67393, 67394, 67391, 67390, << 
632                                                << 
633 Jul 03, 2017 J.Apostolakis             - field << 
634 --------------------------                     << 
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 << 
639     ( Coverity issue 67355 )                   << 
640                                                << 
641 May 17, 2017 J.Apostolakis             - field << 
642 --------------------------                     << 
643 - G4FieldManager::SetDetectorField             << 
644   Fixed default of 'fail mode' parameter in    << 
645      to 0 (silent) - not 1 which was used for  << 
646   In case of existing G4ChordFinder, use 'max' << 
647                                                << 
648                                                << 
649 May 11, 2017 J.Apostolakis             - field << 
650 --------------------------                     << 
651 - Reintroduced changes of field-V10-01-05, 06  << 
652   issue recalled by ATLAS.                     << 
653 - New fixes/refinements (since field-V10-01-07 << 
654   o Extra check for missing equation. (Fix)    << 
655   o Renamed G4FieldManager::SetFieldChangesEne << 
656     InitialiseFieldChangesEnergy() to clarify  << 
657 - Original functionality change (copied from f << 
658   o G4FieldManager.cc : Revised behaviour of S << 
659     passes the Field to the Equation, as is th << 
660     The previous behaviour is possible, using  << 
661             Values: 0           = silent ;     << 
662                     1 (default) = warning;     << 
663                     2 or other  = fatal except << 
664                                                << 
665     This change is to ensure that user expecta << 
666     if the field is changed for an existing, w << 
667     be propagated to the equation of motion.   << 
668     Note: this causes potential conflict betwe << 
669           and the field, which will need to be << 
670     Old behaviour (just set our own pointer) i << 
671     ProposeDetectorField(G4Field *detectorFiel << 
672     Note: Error reporting behaviour of SetDete << 
673           complain by default if ChordFinder i << 
674           ( The default values of failMode = 0 << 
675     If a chord-finder exists, it will still wa << 
676     To obtain have noisy extra checks call Set << 
677     or by using the new method for an existing << 
678     ChangeDetectorField(G4Field *detectorField << 
679   OLD: Co-works and requires new tag in geomet << 
680                                                << 
681 Mar  22, 2017 G.Cosmo                   - fiel << 
682 ---------------------                          << 
683 - Revert change made in previous tag and add s << 
684   singleton pointer.                           << 
685                                                << 
686 Mar  17, 2017 G.Cosmo                   - fiel << 
687 ---------------------                          << 
688 - Define G4FieldManagerStore as normal singlet << 
689                                                << 
690 Oct   7, 2016 J.Apostolakis             - fiel << 
691 ---------------------------                    << 
692 - Checked loops for termination for infinite l << 
693    them with "Loop checking" comment           << 
694                                                << 
695 Oct   7, 2016 D.Sorokin                 - fiel << 
696 -----------------------  Commit: J. Apostolaki << 
697 - Protection for multiple inclusion of G4Class << 
698    (thanks to Dmitrii Sorokin, GSoC 2016 stude << 
699                                                << 
700 Aug  16, 2016 J.Apostolakis             - fiel << 
701 ---------------------------                    << 
702 - Added initialization of fAuxStepper in const << 
703   G4DoLoMcPriRK34, G4DormandPrince745 & G4Dorm << 
704                                                << 
705 June 11, 2016 J.Apostolakis             - fiel << 
706 ---------------------------                    << 
707 - Restored G4ClassicalRK4 as default stepper f << 
708   (due to performance issues reported in bench << 
709                                                << 
710 June 10, 2016 G.Cosmo                   - fiel << 
711 ---------------------                          << 
712 - Fixed code indentation in G4HelixMixedSteppe << 
713   fixes compilation warnings on gcc-6.1.       << 
714                                                << 
715 June 1, 2016 J.Apostolakis              - fiel << 
716 --------------------------                     << 
717 - Fix in multiple steppers for the size of two << 
718   intermediate values;  they must be at least  << 
719   'fNumberOfStateVariables' long.              << 
720   Changed: G4CashKarp,                         << 
721            G4BogackiShampine 23 & 34           << 
722            G4DormandPrince 745, RK56 & RK78    << 
723      G4DoLoMcPriRK34                           << 
724            G4FSALBogackiShampine45, G4FSALDorm << 
725 - Made G4CashKarp the default stepper in G4Cho << 
726 - Deleted trial class G4NewChordFinder.        << 
727                                                << 
728 June 1, 2016 J.Apostolakis              - fiel << 
729 --------------------------                     << 
730 - Deleted test code (RkTestRun) due to cmake i << 
731                                                << 
732 June 1, 2016 J.Apostolakis              - fiel << 
733 --------------------------                     << 
734 - Made G4ClassicalRK4 the default stepper agai << 
735 - Fixes in test code (RkTestRun) for new names << 
736                                                << 
737 May 31, 2016 J.Apostolakis              - fiel << 
738 --------------------------                     << 
739 - New class G4NewChordFinder, that uses old G4 << 
740     the newer G4FSALIntegratorDriver -- first  << 
741   Created new test testNewChordFinder.cc to ch << 
742                                                << 
743 - Renamed new Stepper classes to use 'G4' pref << 
744     DormandPrince{745,RK56,RK67} TsitourasRK45 << 
745                                                << 
746 - Renamed FSAL base classes to use 'G4' prefix << 
747      FSALMagIntegratorStepper to G4VFSALIntegr << 
748      FSALIntegratorDriver     to  G4FSALIntegr << 
749   and the experimental FSAL versions of steppe << 
750      FBogackiShampine45.hh  to  G4FSALBogackiS << 
751      FDormandPrince745.hh   to  G4FSALDormandP << 
752 ( Note: FSAL steppers remain 'behind' the impr << 
753                                                << 
754 - Made DormandPrince745 (DP45) the default ste << 
755                                                << 
756 May 26, 2016 J.Apostolakis & Som. Banerjee   - << 
757 ------------------------------------------     << 
758 - First version of FSAL classes (as additional << 
759     FSAL Integrator Driver  : New *concrete*,  << 
760     FSAL Integrator Stepper : New base class ( << 
761     FBogackiShampine45:  FSAL-version of Bogac << 
762     FDormandPrince745:   FSAL-version of FDorm << 
763   Developed by Somnath Banerjee in GSoC 2015   << 
764                                                << 
765 Context:                                       << 
766 * FSAL Stepper's key 'Stepper()' method for St << 
767     argument to return the derivative at the e << 
768     If the step was successful, this estimate  << 
769     accuracy as the stepper (i.e. 5th order fo << 
770                                                << 
771 - FSAL Driver method uses the revised Stepper  << 
772     the final (endpoint) derivative for succes << 
773     as the start derivative for the next step, << 
774     continuing of integration.                 << 
775                                                << 
776 - New test (RkTestRun.cc) covering FSAL method << 
777    Developed by Somnath Banerjee in GSoC 2015  << 
778                                                << 
779 May 26, 2016 J.Apostolakis                   - << 
780 --------------------------                     << 
781 Preparation for addition of FSAL steppers (& d << 
782 - G4MagIntegratorStepper: Added counter for ca << 
783     with Get/Reset methods.                    << 
784 - Cosmetic fixes in sources.cmake (tabs to spa << 
785                                                << 
786 May 25, 2016 J.Apostolakis & Som. Banerjee   - << 
787 ------------------------------------------     << 
788 - Added new stepper classes embedded RK method << 
789   * DoLoMcPriRK34,      6-stage 3/4 RK (interp << 
790   * DormandPrinceRK56,  9-stage 5/6 RK (interp << 
791   * DormandPrinceRK78, 13-stage 7/8 RK (interp << 
792   created by Somnath Banerjee as part of GSoC  << 
793                                                << 
794 May 25, 2016 J.Apostolakis             - field << 
795 --------------------------                     << 
796 - Revised testPropagateMagField, to reduce err << 
797     steps.  An error message is still written  << 
798     but test does not stop.                    << 
799                                                << 
800 - G4HelixMixedStepper: Fixes & added new (5th  << 
801     Included (G4)Bogacki-Shampine 23/45 ,  Dor << 
802     and newest TsitourasRK45.                  << 
803                                                << 
804 May 24, 2016 J.Apostolakis             - field << 
805 --------------------------                     << 
806 - Added TsitourasRK45 stepper.                 << 
807 - Made Cash-Karp the default stepper (in G4Cho << 
808                                                << 
809 May 23, 2016 J.Apostolakis             - field << 
810 --------------------------                     << 
811 - Made DormandPrince745 (DP45) the default ste << 
812                                                << 
813 May 20, 2016 J.Apostolakis             - field << 
814 -------------------------                      << 
815 - Added steppers created by Somnath Banerjee a << 
816     G4BogackiShampine23 (BS23 below), G4Bogack << 
817     DormandPrince745 (DP45).                   << 
818   These implement third order (BS23) and fifth << 
819     embedded RK tableaus.                      << 
820 - DP45 includes interpolation method, to evalu << 
821     ('y') at intermediate points of a successf << 
822   BS45's interpolation method exists, but is n << 
823                                                << 
824  References:                                   << 
825   - BS45 is embedded pair from paper by P. Bog << 
826       “An efficient Runge-Kutta (4,5) pair,â << 
827       Comput. Math. with Appl., vol. 32, no. 6 << 
828   - BS23 is four stage RK method from the pape << 
829       “A 3(2) pair of Runge - Kutta formulas << 
830       Appl. Math. Lett., vol 2, no 4, p.321 (1 << 
831   - DP45 are from Table 2 of  J. R. Dormand an << 
832       “A family of embedded Runge-Kutta form << 
833       Journal of comput. and applied Math., vo << 
834                                                << 
835 May 4, 2016 G.Cosmo                   - field- << 
836 -------------------                            << 
837 - Fixed Clone() signatures in derived Field cl << 
838   More corrections on implementations of opera << 
839                                                << 
840 Apr 29, 2016 G.Cosmo                  - field- << 
841 --------------------                           << 
842 - Corrected implementation of operator=() and  << 
843   G4ElectroMagneticField, G4ElectricField and  << 
844                                                << 
845 Feb 25, 2016 P.Gumplinger             - field- << 
846 -------------------------                      << 
847 - address Problem Report: 1831                 << 
848   change: G4Mag_SpinEqRhs, G4EqEMFieldWithSpin << 
849           G4RepleteEofM.cc from g_BMT = (magMo << 
850                            to   g_BMT = (std:: << 
851                                                << 
852                                                << 
853 Dec 11, 2015 A.Dotti          - field-V10-02-0 << 
854 --------------------------                     << 
855 Fixing typo in tests/CMakeList.txt file: subdi << 
856 instead of add_subdirectory()                  << 
857                                                << 
858 Nov  2, 2015 J.Apostolakis             - field << 
859 Oct 22, 2015 J.Apostolakis             - field << 
860 --------------------------                     << 
861 - Reverted changes in G4FieldManager from  tag << 
862    inadvertently reintroduced in tag field-V10 << 
863     (fixed in tag -15: committed new copy from << 
864                                                << 
865 - Added explanation comment in G4MagHelicalSte << 
866                                                << 
867 Oct 13, 2015 J.Apostolakis             - field << 
868 --------------------------                     << 
869 - G4ChordFinder::FindNextChord: Added check ag << 
870   to identify potential issue of lack of conve << 
871 - test: fixed testProElectricMagField.cc       << 
872                                                << 
873 - Note: tag-13 inadvertently reintroduced chan << 
874                                                << 
875 Jun 26, 2015 P.Gumplinger              - field << 
876 -------------------------                      << 
877 - Include 'NumberOfVariables' in G4RepleteEofM << 
878                                                << 
879 Jun 22, 2015 G.Cosmo                   - field << 
880 --------------------                           << 
881 - Withdrawn also changes introduced in tag "fi << 
882   responsible for memory violation errors in V << 
883   Now corresponding to tag "field-V10-01-04".  << 
884                                                << 
885 Jun 18, 2015 G.Cosmo                   - field << 
886 --------------------                           << 
887 - Withdrawn changes introduced from tag "field << 
888   "field-V10-01-07" included, responsible for  << 
889   run-time errors on Valgrind checks.          << 
890                                                << 
891 Jun 10, 2015 P.Gumplinger              - field << 
892 -------------------------                      << 
893 - initialize all elements of dydx[] in G4Reple << 
894   Thanks to Tatsuya Kikawa (Osaka Univ.)       << 
895                                                << 
896 Jun 10, 2015 J.Apostolakis             - field << 
897 --------------------------                     << 
898 - G4FieldManager.cc : Made behaviour of SetDet << 
899    longer complains by default if ChordFinder  << 
900     ( The default values of failMode = 0 i.e.  << 
901    If a chord-finder exists, it will still war << 
902                                                << 
903    It is still possible to have louder/extra c << 
904      SetDetectorField with failMode > 0        << 
905    or by using a new method, which expects an  << 
906      ChangeDetectorField(G4Field *detectorFiel << 
907                                                << 
908 Jun  8, 2015 J.Apostolakis             - field << 
909 --------------------------                     << 
910 - G4FieldManager.cc : Revised behaviour of Set << 
911    passes the Field to the Equation, as is the << 
912    The previous behaviour is possible, using e << 
913       flag. Values: 0           = silent ;     << 
914                     1 (default) = warning;     << 
915                     2 or other  = fatal except << 
916    Or can use alternative (new) suggestion met << 
917                                                << 
918    This change is to ensure that user expectat << 
919       if the field is changed for an existing, << 
920       be propagated to the equation of motion. << 
921    Note: this causes potential conflict betwee << 
922          and the field, which will need to be  << 
923                                                << 
924    Old behaviour (just set our own pointer) is << 
925      ProposeDetectorField(G4Field *detectorFie << 
926                                                << 
927    Co-works and requires new tag in geometry/n << 
928                                                << 
929 Jun 4, 2015 P. Gumplinger              - field << 
930 -------------------------                      << 
931 - change assignment to field instead of Field  << 
932                                                << 
933 Jan 28, 2015 J.Apostolakis             - field << 
934 --------------------------                     << 
935 - Revert unintended inclusion of changes in G4 << 
936                                                << 
937 Jan 15, 2015 J.Apostolakis             - field << 
938 --------------------------                     << 
939 - Small refinements in G4FieldTrack - access r << 
940     Avoid division by zero for Unit direction  << 
941     Added method to get Rest Mass.             << 
942   Needed for fixes related to Problem report 1 << 
943   Thanks to Nathan S. Froemming <nfroemm@uw.ed << 
944    and created dedicated test to demonstrate i << 
945                                                << 
946 Nov 03, 2014 G.Cosmo                   - field << 
947 --------------------                           << 
948 - Moved constructors and simple methods to in  << 
949   G4LineSection for CPU speedup (courtesy of S << 
950                                                << 
951 May 21, 2014 J.Apostolakis             - field << 
952 --------------------------                     << 
953 - G4FieldTrack:                                << 
954   * Fixed SetChargeAndMoments() to use the new << 
955     G4ChargeState::SetChargesAndMoments(); it  << 
956     erroneous change in G4ChargeState::SetChar << 
957     is now renamed SetChargeSpinMoments() to s << 
958   * Added pdg-spin as argument to constructors << 
959   * Renamed 'spin' to 'Polarization' in method << 
960     avoid confusion;                           << 
961   * Revised constructors to add pdg-spin as la << 
962 - G4ChargeState:                               << 
963   - Addressed Coverity issue #56281 'Arguments << 
964     G4ChargeState::SetChargeMoments() when use << 
965     G4FieldTrack::SetChargeMoments() from addi << 
966     without revising name of method to reflect << 
967   - Changed order of arguments in constructor, << 
968     (was 2nd) and making all arguments mandato << 
969   - Renamed SetChargeAndMoments() method with  << 
970     to SetChargeSpinMoments();                 << 
971   - Added new methods including SetChargesAndM << 
972     SetChargeDipoleMoments() (no spin), and al << 
973     SetChargeMdmSpin() (which includes spin) t << 
974     combinations.                              << 
975 - G4MagIntegratorDriver::OneGoodStep():        << 
976   * Trial changes to address Valgrind issue, a << 
977                                                << 
978 Apr 01, 2014 J.Apostolakis                - fi << 
979 --------------------------                     << 
980 - Moved G4FieldTrack::LoadFromArray() to .cc a << 
981   thread-local static data local to the functi << 
982                                                << 
983 Mar 14, 2014 J.Apostolakis                - fi << 
984 --------------------------                     << 
985 - Fix assignment operator for G4FieldTrack. (C << 
986 - Improve printing of G4FieldTrack             << 
987                                                << 
988 Jan 17, 2014 P.Gumplinger                 - fi << 
989 -------------------------                      << 
990 - add G4Mag_EqRhs::SetChargeMomentumMass( part << 
991   to G4Mag_SpinEqRhs::SetChargeMomentumMass, s << 
992   http://hypernews.slac.stanford.edu/HyperNews << 
993                                                << 
994 Nov 18, 2013 P.Gumplinger                 - fi << 
995 -------------------------                      << 
996 - fix Coverity warning in G4RepleteEofM        << 
997                                                << 
998 Nov 17, 2013 J.Apostolakis                     << 
999 --------------------------                     << 
1000 - Fixed and improved HelixMixed Stepper:      << 
1001     Corrected the default stepper for small s << 
1002     Added Angle-threshold parameter. (Default << 
1003     Added more Steppers, including G4NystromR << 
1004     Revised Id numbers of Steppers, to make t << 
1005     More comments in Stepper().               << 
1006                                               << 
1007 Nov 05, 2013 P.Gumplinger                 - f << 
1008 -------------------------                     << 
1009 - remove writing out-of-bounds dydx[8] = 0. i << 
1010                                               << 
1011 Nov 04, 2013 P.Gumplinger                 - f << 
1012 -------------------------                     << 
1013 - add G4RepleteEofM to sources.cmake          << 
1014                                             f << 
1015 Nov 01st, 2013 P.Gumplinger               - f << 
1016 ---------------------------                   << 
1017 - add G4RepleteEofM: EofM that includes force << 
1018   as well as mu*grad(B) and spin tracking.    << 
1019                                               << 
1020 May 10th, 2013 P.Gumplinger/J.Apostolakis - f << 
1021 -----------------------------------------     << 
1022 - Revised number of field components (to allo << 
1023    18 are required for new applications (B, E << 
1024 - Fixes for initialisation errors found by Co << 
1025                                               << 
1026 May 10th, 2013 P.Gumplinger - field-V09-06-06 << 
1027 ---------------------------                   << 
1028 - prevent divided by zero and shortcut spin t << 
1029   particles: G4Mag_SpinEqRhs.cc, G4EqEMFieldW << 
1030   G4EqEMFieldWithEDM.cc                       << 
1031                                             f << 
1032 May 8th,  2013 P.Gumplinger/J.Apostolakis - f << 
1033 -----------------------------------------     << 
1034 - Introduced new class G4ChargeState to hold  << 
1035      (promoted from internal class of G4Field << 
1036 - Changed the signature of EquationOfMotion:: << 
1037  take G4ChargeState in place of G4double (cha << 
1038 - Deleted SetChargeMomentumMass from G4ChordF << 
1039    G4MagInt_Driver                            << 
1040                                               << 
1041 - Migrated testPropagateMagField and testProp << 
1042                                               << 
1043 March 19th, 2013 G.Cosmo - field-V09-06-03, f << 
1044 -------------------------                     << 
1045 - Cleanup of MT changes in G4FieldManagerStor << 
1046                                               << 
1047 February 26th, 2013 A.Dotti - field-V09-06-01 << 
1048 ---------------------------                   << 
1049 - First implementation of Cloning mechanism ( << 
1050                                               << 
1051 February 22nd, 2013 G.Cosmo - field-V09-06-00 << 
1052 ---------------------------                   << 
1053 - Cleanup of unnecessary changes for multi-th << 
1054 - Removed unused private data-members in G4Ma << 
1055                                               << 
1056 November 14th, 2012 P.Mato - field-V09-05-07  << 
1057 --------------------------                    << 
1058 - G4QuadrupoleMagField: allow displaced origi << 
1059 - Added G4SystemOfUnits.hh in unit tests      << 
1060                                               << 
1061 August 30th, 2012 P.Mato - field-V09-05-06    << 
1062 ------------------------                      << 
1063 - Adapted CMakeLists.txt files to new unit te << 
1064                                               << 
1065 June 11th, 2012 G.Cosmo - field-V09-05-05     << 
1066 -----------------------                       << 
1067 - Explicitly use inclusion of headers for sys << 
1068   constants, in plan to remove implicit inclu << 
1069                                               << 
1070 May 14th, 2012 G.Cosmo - field-V09-05-04      << 
1071 ----------------------                        << 
1072 - Fixed spurious case of hidden variable visi << 
1073   detected with '-Wshadow' compilation option << 
1074                                               << 
1075 February 3rd,  2012 J.Apostolakis - field-V09 << 
1076 ---------------------------------             << 
1077 - G4FieldTrack:                               << 
1078     Added new (inline) method to set the Rest << 
1079        reset this - and keep reuse the same G << 
1080        (across tracks.)                       << 
1081     Made SetCurvePnt() method private.        << 
1082     Simplified implementation of constructors << 
1083        1 division per call.                   << 
1084                                               << 
1085 February  3rd,  2012 G.Cosmo - field-V09-05-0 << 
1086 ----------------------------                  << 
1087 - Removed tests in CMakeLists.txt causing cat << 
1088   testing!                                    << 
1089                                               << 
1090 February  2nd,  2012 J.Apostolakis - field-V0 << 
1091 ----------------------------------            << 
1092 - G4Mag_UsualEqRhs: in SetChargeMomentumMass( << 
1093   division by zero; stopped updating 'fInvCur << 
1094   is obsolete).                               << 
1095 - Added tests in CMakeLists.txt               << 
1096                                               << 
1097 December 13th,  2011 G.Cosmo - field-V09-05-0 << 
1098 ----------------------------                  << 
1099 - Fixed Coverity defects in G4SimpleRunge (re << 
1100   data member) and G4FieldTrack (missing G4Ch << 
1101 - Synchronised unit tests to trunk (new test  << 
1102                                               << 
1103 November 11th,  2011 J.Apostolakis - field-V0 << 
1104 ----------------------------------            << 
1105 - Added G4Field.cc to list of files in source << 
1106                                               << 
1107 November  4th,  2011 J.Apostolakis - field-V0 << 
1108 ----------------------------------            << 
1109 - G4Field: revised to improve ability to dete << 
1110   Added new data member to identify gravity f << 
1111   Added new method IsGravityActive() to acces << 
1112   Created new source file: moving constructor << 
1113 - Changed G4UniformGravityField and G4Electro << 
1114   to accomodate this refinement.              << 
1115                                               << 
1116 November 2nd,  2011 P.Gumplinger - field-V09- << 
1117 --------------------------------              << 
1118 - update list of files in sources.cmake       << 
1119                                               << 
1120 October 28th,  2011 P.Gumplinger - field-V09- << 
1121 --------------------------------              << 
1122 - Added (uniform) gravity field capability.   << 
1123   New classes G4EqGravityField, G4UniformGrav << 
1124                                               << 
1125   *Required* for co-working tag in Transporta << 
1126                                               << 
1127 October 12th,  2011 P.Gumplinger - field-V09- << 
1128 --------------------------------              << 
1129 - replaced: omegac = 0.105658387*GeV/mass * 2 << 
1130   with:     omegac = (eplus/particleMass)*c_l << 
1131   in G4EqEMFieldWithEDM.cc, G4Mag_SpinEqRhs.c << 
1132   changed calculation:                        << 
1133      std::sqrt(kineticEnergy*kineticEnergy +  << 
1134   to:                                         << 
1135      std::sqrt(kineticEnergy*(kineticEnergy+2 << 
1136   in G4FieldTrack.cc                          << 
1137                                               << 
1138 August 11th,  2011 G.Cosmo - field-V09-04-01  << 
1139 --------------------------                    << 
1140 - Migrated to new G4Exception scheme for warn << 
1141 - Defined scheme for warnings/errors coding:  << 
1142   + 1xxx for warnings, 0xxx for errors.       << 
1143   Code numbering:                             << 
1144   + 0001: not supported or implemented featur << 
1145   + 0002: invalid setup/construct;            << 
1146   + 0003: invalid run condition;              << 
1147   + 1001: incorrect setup; automatically adap << 
1148   + 1002: notification.                       << 
1149                                               << 
1150 May 13th, 2011 J.Apostolakis                  << 
1151 ----------------------------                  << 
1152 - Added new class G4TrialsCounter for keeping << 
1153 - Avoid printing out pointer in G4CachedMagne << 
1154 - Updated unit tests.                         << 
1155                                               << 
1156 May 12th,  2011 G.Cosmo - field-V09-04-00     << 
1157 -----------------------                       << 
1158 - Fixed compilation warnings from gcc-4.6.0 f << 
1159                                               << 
1160 May 5th,  2011 J.Apostolakis                  << 
1161 ----------------------------                  << 
1162 - Reordered data members to group invariants, << 
1163                                                   19 
1164 Sep 10th,  2010 J.Apostolakis - field-V09-03-     20 Sep 10th,  2010 J.Apostolakis - field-V09-03-03
1165 -----------------------------                     21 -----------------------------
1166 - Revised constructor of G4MagErrorStepper to     22 - Revised constructor of G4MagErrorStepper to add number of State variables
1167 - Corrected MagErrorStepper to copy State Var     23 - Corrected MagErrorStepper to copy State Variable to output
1168 - Enable G4ConstRK4 to copy remaining State V     24 - Enable G4ConstRK4 to copy remaining State Variables (must integrate 6)
1169                                                   25 
1170 Sep 10th,  2010 J.Apostolakis - field-V09-03-     26 Sep 10th,  2010 J.Apostolakis - field-V09-03-02
1171 -----------------------------                     27 -----------------------------
1172 - New class G4MonopoleEq for rhs of d(pc)/ds      28 - New class G4MonopoleEq for rhs of d(pc)/ds propagation in field
1173   in SI units (V.Grichine).                       29   in SI units (V.Grichine).
1174 - Fixed passing of time in G4NystromRK4           30 - Fixed passing of time in G4NystromRK4
1175                                                   31 
1176 Jul 21st,  2010 T.Nikitina - field-V09-03-01      32 Jul 21st,  2010 T.Nikitina - field-V09-03-01
1177 --------------------------                        33 --------------------------
1178 - Fixed cases of memory corruption in G4RKG3_     34 - Fixed cases of memory corruption in G4RKG3_Stepper.
1179 - Fixed case of unused array data member in G     35 - Fixed case of unused array data member in G4ExactHelixStepper.
1180 - Removed useless code never executed in G4Co     36 - Removed useless code never executed in G4ConstRK4::Stepper().
1181 - Fixed initialization in G4NystromRK4 constr     37 - Fixed initialization in G4NystromRK4 constructor.
1182                                                   38 
1183 Jul 14th,  2010 G.Cosmo - field-V09-03-00         39 Jul 14th,  2010 G.Cosmo - field-V09-03-00
1184 -----------------------                           40 -----------------------
1185 - Added dummy initialization of members in co     41 - Added dummy initialization of members in constructors for G4CashKarpRKF45,
1186   G4ConstRK4, G4EqEMFieldWithEDM, G4EqEMField     42   G4ConstRK4, G4EqEMFieldWithEDM, G4EqEMFieldWithSpin, G4ExactHelixStepper,
1187   G4FieldTrack, G4MagHelicalStepper, G4MagInt     43   G4FieldTrack, G4MagHelicalStepper, G4MagInt_Driver, G4Mag_EqRhs,
1188   G4Mag_SpinEqRhs, G4Mag_UsualEqRhs, G4Nystro     44   G4Mag_SpinEqRhs, G4Mag_UsualEqRhs, G4NystromRK4, G4RKG3_Stepper,
1189   G4UniformElectricField, G4UniformElectricFi     45   G4UniformElectricField, G4UniformElectricField.
1190                                                   46 
1191 Nov 12th,  2009 J.Apostolakis - field-V09-02-     47 Nov 12th,  2009 J.Apostolakis - field-V09-02-09
1192 -----------------------------                     48 -----------------------------
1193 - G4MagIntegratorDriver:  activate check on i     49 - G4MagIntegratorDriver:  activate check on integration error for spin.
1194                                                   50 
1195 Nov 12th,  2009 J.Apostolakis - field-V09-02-     51 Nov 12th,  2009 J.Apostolakis - field-V09-02-08
1196 -----------------------------  (fix only)         52 -----------------------------  (fix only)
1197 - G4Nystrom:  Corrected interface method getF     53 - G4Nystrom:  Corrected interface method getField: array now has explicit dimension[4]
1198                 (Problem found by gcc 4.3 - i     54                 (Problem found by gcc 4.3 - it checked indices used in inline method! )
1199                                                   55 
1200 Nov 6th,  2009 P.Gumplinger - field-V09-02-07     56 Nov 6th,  2009 P.Gumplinger - field-V09-02-07
1201 ---------------------------                       57 ---------------------------
1202 - bug fix in G4EqEMFieldWithSpin and G4EqEMFi     58 - bug fix in G4EqEMFieldWithSpin and G4EqEMFieldWithEDM
1203   thanks to Hiromi Iinuma (KEK) see:              59   thanks to Hiromi Iinuma (KEK) see:
1204   http://hypernews.slac.stanford.edu/HyperNew     60   http://hypernews.slac.stanford.edu/HyperNews/geant4/get/emfields/161.html
1205                                                   61 
1206 Nov 5th,  2009 J.Apostolakis - field-V09-02-0     62 Nov 5th,  2009 J.Apostolakis - field-V09-02-06
1207 ----------------------------                      63 ----------------------------
1208 - G4MagIntegratorDriver.cc : Enabled call to      64 - G4MagIntegratorDriver.cc : Enabled call to ComputeRightHandSide
1209 - G4NystromRK4.cc          : Disabled auxilia     65 - G4NystromRK4.cc          : Disabled auxiliary code in Stepper (needed if
1210                               ComputeRightHan     66                               ComputeRightHandSide is not called.)
1211                                                   67 
1212 Nov 5th,  2009 J.Apostolakis - field-V09-02-0     68 Nov 5th,  2009 J.Apostolakis - field-V09-02-05
1213 ----------------------------                      69 ----------------------------
1214 - Added new virtual method CalculateRightHand     70 - Added new virtual method CalculateRightHandSide to G4MagIntegratorStepper for use
1215       in caching momentum (and field value) b     71       in caching momentum (and field value) by G4NystromRK4
1216       Default implementation in G4MagIntegrat     72       Default implementation in G4MagIntegratorStepper calls RightHandSide inline method.
1217 - G4Nystrom:  New Set/Get method for cache di     73 - G4Nystrom:  New Set/Get method for cache distance.
1218               Changed private data members in     74               Changed private data members in G4NystromRK4.
1219 - G4MagIntegratorDriver:  alternative call to     75 - G4MagIntegratorDriver:  alternative call to ComputeRightHandSide is not used (in comment)
1220               As a result G4NystromRK4 operat <<  76               As a result G4NystromRK4 operates without reusing 
1221                                                   77 
1222 Nov 5th,  2009 J.Apostolakis - field-V09-02-0     78 Nov 5th,  2009 J.Apostolakis - field-V09-02-04
1223 ----------------------------                      79 ----------------------------
1224 - G4CachedMagneticField: New Simple class to  <<  80 - G4CachedMagneticField: New Simple class to cache value of Magnetic Field. 
1225      Speeds up code when calculation of field     81      Speeds up code when calculation of field value is complex.
1226 - G4NystromRK4 :         New Stepper with Nys     82 - G4NystromRK4 :         New Stepper with Nystrom for magnetic field
1227      with analytic estimation of integration  <<  83      with analytic estimation of integration error.  
1228      Greatly reduces number of field value pe     84      Greatly reduces number of field value per step.
1229 - Revised testPropagateMagField to use Cached     85 - Revised testPropagateMagField to use Cached Quadrupole field,
1230      and to cover G4NystromRK4 and G4ConstRK4     86      and to cover G4NystromRK4 and G4ConstRK4.
1231                                                   87 
1232 Nov 4th,  2009 P.Gumplinger - field-V09-02-03     88 Nov 4th,  2009 P.Gumplinger - field-V09-02-03
1233 ---------------------------                       89 ---------------------------
1234 - (minor change) remove comment from G4EqEMFi     90 - (minor change) remove comment from G4EqEMFieldWithSpin.cc
1235   add G4EqEMFieldWithEDM class: this is the R     91   add G4EqEMFieldWithEDM class: this is the RHS of EofM in a combined
1236   electric and magnetic field, with spin trac     92   electric and magnetic field, with spin tracking for both MDM and EDM terms.
1237   Thanks to Kevin Lynch, Phys. Dept. at Bosto     93   Thanks to Kevin Lynch, Phys. Dept. at Boston University.
1238                                                   94 
1239 May 18th, 2009 T.Nikitina - field-V09-02-02       95 May 18th, 2009 T.Nikitina - field-V09-02-02
1240 -------------------------                         96 -------------------------
1241 - Enhanced algorithm G4ChordFinder::ApproxCur     97 - Enhanced algorithm G4ChordFinder::ApproxCurvePointS() in order to speedup
1242   BrentLocator.                                   98   BrentLocator.
1243                                                   99 
1244 March 25th, 2009 G.Cosmo - field-V09-02-01       100 March 25th, 2009 G.Cosmo - field-V09-02-01
1245 ------------------------                         101 ------------------------
1246 - Some code cleanup and formatting...            102 - Some code cleanup and formatting...
1247                                                  103 
1248 March 6th, 2009 P.Gumplinger - field-V09-02-0    104 March 6th, 2009 P.Gumplinger - field-V09-02-00
1249 ----------------------------                     105 ----------------------------
1250 - Added 3rd term of BMT equation (Spin x Beta    106 - Added 3rd term of BMT equation (Spin x Beta x Efield) to G4EqEMFieldWithSpin,
1251   addresses emfields forum posting #155 (bug     107   addresses emfields forum posting #155 (bug report). Thanks to Kevin Lynch,
1252   Phys. Dept. at Boston University.              108   Phys. Dept. at Boston University.
1253 - Moved renormalization of spin from G4EqEMFi    109 - Moved renormalization of spin from G4EqEMFieldWithSpin and G4Mag_SpinEqRhs to
1254   G4ClassicalRK4 and G4SimpleHeum.               110   G4ClassicalRK4 and G4SimpleHeum.
1255 - Added Spin propagation errors to the criter    111 - Added Spin propagation errors to the criteria for 'OneGoodStep' in
1256   G4MagIntegratorDriver but actually don't ad    112   G4MagIntegratorDriver but actually don't add it (yet) to the decision logic.
1257                                                  113 
1258 November, 19th, 2008  P.Gumplinger - field-V0    114 November, 19th, 2008  P.Gumplinger - field-V09-01-05
1259 ----------------------------------               115 ----------------------------------
1260 - Renormalized the spin to 1 in G4EqEMFieldWi    116 - Renormalized the spin to 1 in G4EqEMFieldWithSpin and G4Mag_SpinEqRhs.
1261                                                  117 
1262 November, 7th, 2008   P.Gumplinger - field-V0    118 November, 7th, 2008   P.Gumplinger - field-V09-01-04
1263 ----------------------------------               119 ----------------------------------
1264 - Added SetAnomaly() and GetAnomaly() accesso    120 - Added SetAnomaly() and GetAnomaly() accessors to G4EqEMFieldWithSpin.
1265                                                  121 
1266 October, 28th, 2008   T.Nikitina - field-V09-    122 October, 28th, 2008   T.Nikitina - field-V09-01-03
1267 --------------------------------                 123 --------------------------------
1268 - Added 'ApproxCurveV' to method G4ChordFinde << 124 - Added 'ApproxCurveV' to method G4ChordFinder::ApproxCurvePointS() in 
1269   order to better calculate the curve length.    125   order to better calculate the curve length.
1270 - Some code cleanup.                             126 - Some code cleanup.
1271                                                  127 
1272 September, 18th, 2008   T.Nikitina               128 September, 18th, 2008   T.Nikitina
1273 ----------------------------------               129 ----------------------------------
1274 - Added new stepper class G4ConstRK4, perform    130 - Added new stepper class G4ConstRK4, performing integration of one step
1275   with error calculation in constant magnetic    131   with error calculation in constant magnetic field; implementation derived
1276   from G4ClassicalRK4.                           132   from G4ClassicalRK4.
1277                                                  133 
1278 July, 15th, 2008   J.Apostolakis - field-V09-    134 July, 15th, 2008   J.Apostolakis - field-V09-01-02
1279 --------------------------------                 135 --------------------------------
1280 - Revised signature of G4ChordFinder::FinderN    136 - Revised signature of G4ChordFinder::FinderNextChord(), making 'FieldTrack'
1281   argument passed a reference.                   137   argument passed a reference.
1282                                                  138 
1283 May, 28th, 2008   T.Nikitina                     139 May, 28th, 2008   T.Nikitina
1284 ----------------------------                     140 ----------------------------
1285 - G4ChordFinder: added new method ApproxCurve    141 - G4ChordFinder: added new method ApproxCurvePointS() using Brent second order
1286   location mechanism.                            142   location mechanism.
1287                                                  143 
1288 April 24th, 2008   T.Nikitina - field-V09-01-    144 April 24th, 2008   T.Nikitina - field-V09-01-01
1289 -----------------------------                    145 -----------------------------
1290 - Fix 'unused' non-initialized values of dydx    146 - Fix 'unused' non-initialized values of dydx in G4EqMagElectricField
1291   and G4EqEMFieldWithSpin.                       147   and G4EqEMFieldWithSpin.
1292                                                  148 
1293 January 17th, 2008   G.Cosmo - field-V09-01-0    149 January 17th, 2008   G.Cosmo - field-V09-01-00
1294 ----------------------------                     150 ----------------------------
1295 - G4CashKarpRKF45: deleted un-needed duplicat    151 - G4CashKarpRKF45: deleted un-needed duplicate (and unused) instance variable
1296  'fNumberOfVariables', already defined in G4M    152  'fNumberOfVariables', already defined in G4MagIntegratorStepper. (J.Ap.)
1297 - Some code cleanup.                             153 - Some code cleanup.
1298                                                  154 
1299 December 7th, 2007   J.Apostolakis & T.Nikiti    155 December 7th, 2007   J.Apostolakis & T.Nikitina - field-V09-00-03
1300 ---------------------------------------------    156 -----------------------------------------------
1301 - New class G4FieldManagerStore. It enables r    157 - New class G4FieldManagerStore. It enables resetting of all chord
1302   finders' state. Needed to address problem r    158   finders' state. Needed to address problem reported by user.
1303                                                  159 
1304 September 9th, 2007  G.Cosmo - field-V09-00-0    160 September 9th, 2007  G.Cosmo - field-V09-00-02a
1305 ----------------------------                     161 ----------------------------
1306 - Some code cleanup in G4MagHelicalStepper.cc    162 - Some code cleanup in G4MagHelicalStepper.cc.
1307                                                  163 
1308 August 30th, 2007    P.Gumplinger - field-V09    164 August 30th, 2007    P.Gumplinger - field-V09-00-02
1309 ---------------------------------                165 ---------------------------------
1310 - Add G4EqEMFieldWithSpin class to allow trac    166 - Add G4EqEMFieldWithSpin class to allow tracking of spin also in
1311   G4ElectroMagneticFields                        167   G4ElectroMagneticFields
1312                                                  168 
1313 August 21st, 2007    T.Nikitina - field-V09-0    169 August 21st, 2007    T.Nikitina - field-V09-00-01
1314 -------------------------------                  170 -------------------------------
1315 - Fix to DistChord() method for Helical Stepp    171 - Fix to DistChord() method for Helical Steppers: adopt 'special' case
1316   also for Ang<2pi not only for Ang<pi; use c    172   also for Ang<2pi not only for Ang<pi; use cos() in place of tan(), to
1317   improve CPU performance.                       173   improve CPU performance.
1318 - Improved AdvanceHelix() to be able to make     174 - Improved AdvanceHelix() to be able to make half step and full step
1319   in one call.                                   175   in one call.
1320 - In G4HelixMixedStepper added possibility to    176 - In G4HelixMixedStepper added possibility to call different steppers for
1321   small steps and add some statistics how off    177   small steps and add some statistics how offen different steppers are called.
1322 - G4RKG3_Stepper: improved internal algorithm    178 - G4RKG3_Stepper: improved internal algorithm to use pre-computed values;
1323   the stepper now gives comparable CPU perfor << 179   the stepper now gives comparable CPU performance as ClassicalRK4. 
1324 - Updated unit tests.                            180 - Updated unit tests.
1325                                                  181 
1326 August 17th, 2007    G.Cosmo - field-V09-00-0    182 August 17th, 2007    G.Cosmo - field-V09-00-00
1327 ----------------------------                     183 ----------------------------
1328 - Changed FatalException to EventMustBeAborte    184 - Changed FatalException to EventMustBeAborted in AccurateAdvance()
1329   if proposed integration step is negative.      185   if proposed integration step is negative.
1330                                                  186 
1331 June 8th, 2007    T.Nikitina - field-V08-03-0    187 June 8th, 2007    T.Nikitina - field-V08-03-03
1332 ----------------------------                     188 ----------------------------
1333 - Relaxed FatalException to Warning in G4MagI << 189 - Relaxed FatalException to Warning in G4MagIntegratorDriver::AccurateAdvance() 
1334   for case of step zero and return previous v << 190   for case of step zero and return previous value. This fixes problem 
1335   observed by ATLAS in release 8.3 when requi    191   observed by ATLAS in release 8.3 when requiring very accurate propagation
1336   -- ie using very small values for acceptabl    192   -- ie using very small values for acceptable integration error.
1337                                                  193 
1338 May 18th, 2007    T.Nikitina - field-V08-03-0    194 May 18th, 2007    T.Nikitina - field-V08-03-02
1339 ----------------------------                     195 ----------------------------
1340 - New class G4HelixMixedStepper, mixing helic    196 - New class G4HelixMixedStepper, mixing helical stepper and RK
1341   G4MagHelicalStepper                            197   G4MagHelicalStepper
1342 - Keep values of  inverse Radius, ..             198 - Keep values of  inverse Radius, ..
1343 - New calculation of DistChord for SteppingAn    199 - New calculation of DistChord for SteppingAngle > pi
1344   G4RKG3Stepper                                  200   G4RKG3Stepper
1345 - New calculation of DistChord for SteppingAn    201 - New calculation of DistChord for SteppingAngle > pi
1346                                                  202 
1347 May 16th, 2007    G.Cosmo - field-V08-03-01      203 May 16th, 2007    G.Cosmo - field-V08-03-01
1348 -------------------------                        204 -------------------------
1349 - Introduced new class G4ErrorMag_UsualEqRhs     205 - Introduced new class G4ErrorMag_UsualEqRhs used to reverse the magnetic
1350   field when propagation is backwards for err    206   field when propagation is backwards for error propagation (by P.Arce).
1351 - Coworks with tag "global-V08-03-02".           207 - Coworks with tag "global-V08-03-02".
1352                                                  208 
1353 May 11th, 2007    G.Cosmo - field-V08-03-00      209 May 11th, 2007    G.Cosmo - field-V08-03-00
1354 -------------------------                        210 -------------------------
1355 - Use call to G4GeometryTolerance instead of     211 - Use call to G4GeometryTolerance instead of kCarTolerance constant in
1356   G4MagIntegratorDriver.                         212   G4MagIntegratorDriver.
1357 - Requires tag "global-V08-03-00" and related    213 - Requires tag "global-V08-03-00" and related tag set.
1358                                                  214 
1359 May 10th, 2007    J.Apostolakis - field-V08-0    215 May 10th, 2007    J.Apostolakis - field-V08-02-01
1360 -------------------------------                  216 -------------------------------
1361 - G4MagIntegratorDriver:                      << 217 - G4MagIntegratorDriver: 
1362     * added protections against zero initial     218     * added protections against zero initial or internal step h=0, (exceptions)
1363     * revised (re)calculation of h, and quit  << 219     * revised (re)calculation of h, and quit loop if h/length < smallest-fraction (~ 10^-12) 
1364                                                  220 
1365 April 26th, 2007  T.Nikitina - field-V08-02-0    221 April 26th, 2007  T.Nikitina - field-V08-02-00
1366 ----------------------------                     222 ----------------------------
1367 - Corrected integration constants in G4MagHel    223 - Corrected integration constants in G4MagHelicalStepper
1368 - Added implementation of G4RKG3_Stepper, ste    224 - Added implementation of G4RKG3_Stepper, stepper derived from Geant3.
1369 - Updated NTST unit test. New unit test "fiel    225 - Updated NTST unit test. New unit test "field06" for comparison of steppers.
1370                                                  226 
1371 November 14th, 2006  J.Apostolakis - field-V0    227 November 14th, 2006  J.Apostolakis - field-V08-01-02
1372 ----------------------------------               228 ----------------------------------
1373 - G4MagIntegratorDriver                          229 - G4MagIntegratorDriver
1374   * Made first argument of GetDerivatives a r    230   * Made first argument of GetDerivatives a reference - avoid copy
1375 - G4MagIntegratorStepper                         231 - G4MagIntegratorStepper
1376   * Include the SetEquationOfMotion() method  << 232   * Include the SetEquationOfMotion() method in G4MagIntegratorStepper 
1377     (for Geant4e, as in field-V08-01-00)         233     (for Geant4e, as in field-V08-01-00)
1378   * Update of disclaimers.                       234   * Update of disclaimers.
1379                                                  235 
1380 November 13th, 2006  G.Cosmo - field-V08-01-0    236 November 13th, 2006  G.Cosmo - field-V08-01-01
1381 ----------------------------                     237 ----------------------------
1382 - G4FieldTrack:                                  238 - G4FieldTrack:
1383   o Implemented missing definition for GetCha    239   o Implemented missing definition for GetCharge().
1384   o Corrected 'const' qualifier for accessors    240   o Corrected 'const' qualifier for accessors in the subclass.
1385   o Cleanup ...                                  241   o Cleanup ...
1386 - NOTE: this tag is NOT including the change     242 - NOTE: this tag is NOT including the change below in G4MagIntegratorStepper.
1387                                                  243 
1388 June 21st, 2006  J.Apostolakis - field-V08-01    244 June 21st, 2006  J.Apostolakis - field-V08-01-00
1389 ------------------------------                   245 ------------------------------
1390 - Including the SetEquationOfMotion() method     246 - Including the SetEquationOfMotion() method in G4MagIntegratorStepper
1391                                                  247 
1392 June 22nd, 2006  J.Apostolakis - field-V08-00    248 June 22nd, 2006  J.Apostolakis - field-V08-00-07
1393 -----------------------------                    249 -----------------------------
1394 - G4ExactHelixStepper: reintroduced corrected << 250 - G4ExactHelixStepper: reintroduced corrected class 
1395     --> testPropagateMagField now tests it al    251     --> testPropagateMagField now tests it also (added)
1396 - G4MagHelicalStepper: made Stepper virtual ( << 252 - G4MagHelicalStepper: made Stepper virtual (for now) 
1397              to enable G4ExactHelixStepper to    253              to enable G4ExactHelixStepper to override it
1398                                                  254 
1399 June 21st, 2006  J.Apostolakis - field-V08-00    255 June 21st, 2006  J.Apostolakis - field-V08-00-06
1400 -----------------------------                    256 -----------------------------
1401 - G4ExactHelixStepper: taking out class       << 257 - G4ExactHelixStepper: taking out class 
1402    (provisional tag in case of difficulties w    258    (provisional tag in case of difficulties with class, revisions)
1403                                                  259 
1404 --- The field-V08-00-0x , x > 6, tags do not     260 --- The field-V08-00-0x , x > 6, tags do not include the change below
1405                                                  261 
1406 May 27th, 2006  J.Apostolakis - field-V08-00-    262 May 27th, 2006  J.Apostolakis - field-V08-00-05
1407 -----------------------------                    263 -----------------------------
1408 - G4FieldTrack: Fix for simple compilation er    264 - G4FieldTrack: Fix for simple compilation error on Sun.
1409                                                  265 
1410 May 23rd, 2006  J.Apostolakis - field-V08-00-    266 May 23rd, 2006  J.Apostolakis - field-V08-00-04
1411 -----------------------------                    267 -----------------------------
1412 - G4FieldTrack: Fix for memory leak for Charg    268 - G4FieldTrack: Fix for memory leak for ChargeState
1413    Made G4ChargeState a data member (has an i    269    Made G4ChargeState a data member (has an instance)
1414                                                  270 
1415 May 18th, 2006  J.Apostolakis - field-V08-00-    271 May 18th, 2006  J.Apostolakis - field-V08-00-03
1416 -----------------------------                    272 -----------------------------
1417 - G4FieldTrack: Fix for issue with gcc 4.0  (    273 - G4FieldTrack: Fix for issue with gcc 4.0  (mac)
1418                                                  274 
1419 May 16th, 2006  J.Apostolakis - field-V08-00-    275 May 16th, 2006  J.Apostolakis - field-V08-00-02
1420 -----------------------------                    276 -----------------------------
1421 - G4ExactHelixStepper                            277 - G4ExactHelixStepper
1422    Taken out alpha version - it was included  << 278    Taken out alpha version - it was included in error 
1423                                                  279 
1424 May 11th, 2006  J.Apostolakis - field-V08-00-    280 May 11th, 2006  J.Apostolakis - field-V08-00-01
1425 -----------------------------                    281 -----------------------------
1426 - G4FieldTrack                                   282 - G4FieldTrack
1427    Significant, provisional change:              283    Significant, provisional change:
1428      * Added charge and moments to FieldTrack << 284      * Added charge and moments to FieldTrack 
1429          (SetMethods,  and pointer to embedde    285          (SetMethods,  and pointer to embedded class G4ChargeState)
1430    Technical revisions:                          286    Technical revisions:
1431      * New constructor, with charge and witho    287      * New constructor, with charge and without velocity
1432      * New almost-default constructor (taking    288      * New almost-default constructor (taking a character)
1433    Also:                                      << 289    Also: 
1434      * New constructor to take const referenc    290      * New constructor to take const reference to Spin
1435      * New implementation method UpdateFourMo    291      * New implementation method UpdateFourMomentum
1436      * Streaming operator takes const referen << 292      * Streaming operator takes const reference, 
1437          and outputs momentum magnitude & dir    293          and outputs momentum magnitude & direction magn.
1438                                                  294 
1439 - G4ExactHelixStepper                            295 - G4ExactHelixStepper
1440    Included in error                          << 296    Included in error 
1441                                                  297 
1442 Apr 6th, 2006  J.Apostolakis - field-V08-00-0    298 Apr 6th, 2006  J.Apostolakis - field-V08-00-00
1443 ----------------------------                     299 ----------------------------
1444 - In G4FieldManager                              300 - In G4FieldManager
1445  Added missing  const GetChordFinder() method << 301  Added missing  const GetChordFinder() method -- Problem report #847 
1446  Corrected description (at top of include fil    302  Corrected description (at top of include file hh):
1447   - It is possible to set the field manager o    303   - It is possible to set the field manager of a logical volume (since long)
1448                                                  304 
1449                                                  305 
1450 Nov 9th, 2005  G.Cosmo - field-V07-01-00         306 Nov 9th, 2005  G.Cosmo - field-V07-01-00
1451 ----------------------                           307 ----------------------
1452 - Archived source code of field01 unit test,     308 - Archived source code of field01 unit test, now moved to examples/extended.
1453 - Migrated unit test NTST to use <sstream> an    309 - Migrated unit test NTST to use <sstream> and std:: namespace. Up-to-date
1454   with G4VParticleChange new interface.          310   with G4VParticleChange new interface.
1455                                                  311 
1456 Dec 2nd, 2004  G.Cosmo - field-V06-02-02         312 Dec 2nd, 2004  G.Cosmo - field-V06-02-02
1457 ----------------------                           313 ----------------------
1458 - Implemented migration to <cmath> for standa    314 - Implemented migration to <cmath> for standard mathematical functions.
1459                                                  315 
1460 Dec 2nd, 2004  J.Apostolakis - field-V06-02-0    316 Dec 2nd, 2004  J.Apostolakis - field-V06-02-01
1461 ----------------------------                     317 ----------------------------
1462 - Improvements to comments in key Field class    318 - Improvements to comments in key Field classes
1463 - Changes to test/NTST, renaming 'main()' fil    319 - Changes to test/NTST, renaming 'main()' file & modifying input files
1464 - Several improvements to test files             320 - Several improvements to test files
1465    testProElectroMagField.cc                     321    testProElectroMagField.cc
1466      * updating for new Electric Field inheri    322      * updating for new Electric Field inheritance (& need for
1467        different ChordFinder creation )          323        different ChordFinder creation )
1468      * adding columns to print-outs in spin c    324      * adding columns to print-outs in spin case for better diagnosis
1469    testPropagateMagField.cc                      325    testPropagateMagField.cc
1470      * Added verbosity level 1 to field Propa    326      * Added verbosity level 1 to field Propagator, relabelled old method.
1471    testPropagateSpin.cc                          327    testPropagateSpin.cc
1472      * Added more printout of parameters (sta    328      * Added more printout of parameters (state) of G4PropagatorInField
1473        and G4FieldManager before running each    329        and G4FieldManager before running each test.
1474    test/NTST                                     330    test/NTST
1475      * Renamed main() file to testNTST.cc and    331      * Renamed main() file to testNTST.cc and added G4UItcsh terminal.
1476                                                  332 
1477                                                  333 
1478 Oct 20th, 2004  P.Gumplinger - field-V06-02-0    334 Oct 20th, 2004  P.Gumplinger - field-V06-02-00
1479 ----------------------------                     335 ----------------------------
1480 - Added Set/GetAnomaly() methods in G4Mag_Spi    336 - Added Set/GetAnomaly() methods in G4Mag_SpinEqRhs.
1481                                                  337 
1482 Feb 9th, 2004  G.Cosmo - field-V06-00-00         338 Feb 9th, 2004  G.Cosmo - field-V06-00-00
1483 ----------------------                           339 ----------------------
1484 - G4UniformMagField.cc: added missing impleme    340 - G4UniformMagField.cc: added missing implementation for
1485   GetConstantFieldValue(). Fixes bug report #    341   GetConstantFieldValue(). Fixes bug report #575.
1486                                                  342 
1487 Nov 13th, 2003  J.Apostolakis - field-V05-02-    343 Nov 13th, 2003  J.Apostolakis - field-V05-02-08
1488 -----------------------------                    344 -----------------------------
1489 - G4ChordFinder:                              << 345 - G4ChordFinder:  
1490   o extended the arguments of AdvanceChordLim    346   o extended the arguments of AdvanceChordLimited  and  FindNextChord
1491     adding the current safety sphere (origin,    347     adding the current safety sphere (origin, radius), for use in optimising.
1492   o fixed set functions which had side effect    348   o fixed set functions which had side effect (on first fraction.)
1493 - Added new class G4ChordFinderSaf (using abo    349 - Added new class G4ChordFinderSaf (using above)
1494   o which uses safety to create longer chords << 350   o which uses safety to create longer chords, so enabling 
1495       propagation in fewer steps --> performa    351       propagation in fewer steps --> performance optimisation
1496 - G4FieldManager:                             << 352 - G4FieldManager: 
1497     Changed default accuracy parameters to mu    353     Changed default accuracy parameters to much better values:
1498         Epsilon Min Default  to 5.0e-5  from     354         Epsilon Min Default  to 5.0e-5  from 5.0e-7  (too small)
1499         Epsilon Max Default  to 0.001   from     355         Epsilon Max Default  to 0.001   from 0.05    (far too big)
1500                                                  356 
1501 Nov  7th, 2003  J.Apostolakis - field-V05-02-    357 Nov  7th, 2003  J.Apostolakis - field-V05-02-07
1502 -----------------------------                    358 -----------------------------
1503 - G4ChordFinder                               << 359 - G4ChordFinder 
1504   o Made this a base class                       360   o Made this a base class
1505     * to enable specialised implementations      361     * to enable specialised implementations
1506     * virtual methods: FindNextChord, PrintSt    362     * virtual methods: FindNextChord, PrintStatistics)
1507     * new method AccumulateStatistics to aid     363     * new method AccumulateStatistics to aid in this
1508                                                  364 
1509   o New default value of                         365   o New default value of                                      Accuracy!!
1510       Delta Chord        to  0.25 mm    (from    366       Delta Chord        to  0.25 mm    (from 3.00 mm)     <-----
1511                                               << 367                                                                  
1512 - G4FieldManager                                 368 - G4FieldManager
1513   o Changed default values of                    369   o Changed default values of
1514       Delta One Step     to  0.010 mm   (from    370       Delta One Step     to  0.010 mm   (from 0.25 mm)     <-----
1515       Delta Intersection to  0.001 mm   (from    371       Delta Intersection to  0.001 mm   (from 0.10 mm)     <-----
1516     for increased default accuracy               372     for increased default accuracy
1517   o Use field's DoesFieldChangesEnergy method    373   o Use field's DoesFieldChangesEnergy method to set relevant member variable
1518                                                  374 
1519 Nov 7th, 2003  J.Apostolakis - field-V05-02-0    375 Nov 7th, 2003  J.Apostolakis - field-V05-02-06
1520 ----------------------------                     376 ----------------------------
1521 - G4ChordFinder                                  377 - G4ChordFinder
1522    Created new class members for parameters u    378    Created new class members for parameters used in heuristics:
1523        fFirstFraction            for first st    379        fFirstFraction            for first step
1524        fFractionLast             fraction of     380        fFractionLast             fraction of last step, if redoing
1525        fFractionNextEstimate     confidence i    381        fFractionNextEstimate     confidence in step est from chord
1526        fMultipleRadius           for small ra    382        fMultipleRadius           for small radii of curve
1527    New method to Print Statistics.               383    New method to Print Statistics.
1528    Verbosity to enable optional printing of s    384    Verbosity to enable optional printing of stats in destructor.
1529                                                  385 
1530 Nov 7th, 2003  J.Apostolakis - field-V05-02-0    386 Nov 7th, 2003  J.Apostolakis - field-V05-02-05
1531 ----------------------------                     387 ----------------------------
1532 - G4ChordFinder                                  388 - G4ChordFinder
1533   o Added simple statistics (with access meth    389   o Added simple statistics (with access methods)
1534 - test/NTST                                      390 - test/NTST
1535   o Added new test, taken from D. Williams' e    391   o Added new test, taken from D. Williams' exampleNTST
1536      modified and maintained by J. Apostolaki << 392      modified and maintained by J. Apostolakis 
1537                                                  393 
1538 Nov 5th, 2003  J.Apostolakis - field-V05-02-0    394 Nov 5th, 2003  J.Apostolakis - field-V05-02-04
1539 ----------------------------                     395 ----------------------------
1540 - G4FieldManager                                 396 - G4FieldManager
1541   o Added Get/Set Min/Max imumEpsilonStep        397   o Added Get/Set Min/Max imumEpsilonStep
1542   o Added fEpsilonMin fEpsilonMax & default t << 398   o Added fEpsilonMin fEpsilonMax & default to member variables. 
1543    >> Now these can be tailored for different    399    >> Now these can be tailored for different parts of a detector or setup
1544                                                  400 
1545 - G4Field G4ElectroMagneticField G4MagneticFi    401 - G4Field G4ElectroMagneticField G4MagneticField
1546   o Adding the virtual method   DoesFieldChan    402   o Adding the virtual method   DoesFieldChangeEnergy()  [to be used later]
1547   o So that G4ElectroMagneticField derives fr    403   o So that G4ElectroMagneticField derives from G4Field
1548     and G4MagneticField derives from G4Electr    404     and G4MagneticField derives from G4ElectroMagneticField
1549                                                  405 
1550 - G4MagErrorStepper and derived classes          406 - G4MagErrorStepper and derived classes
1551     (G4ClassicalRK4 G4SimpleRunge G4ExplicitE    407     (G4ClassicalRK4 G4SimpleRunge G4ExplicitEuler G4ImplicitEuler G4SimpleHeum)
1552   o the constructors take G4EquationOfMotion     408   o the constructors take G4EquationOfMotion in place of a G4Mag_EqRhs
1553     as it these applicable to all types of eq << 409     as it these applicable to all types of equations 
1554      (not just ones for Magnetic field)          410      (not just ones for Magnetic field)
1555                                                  411 
1556 - G4EqMagElectricField                           412 - G4EqMagElectricField
1557   o derives from G4EquationOfMotion              413   o derives from G4EquationOfMotion
1558                                                  414 
1559 - G4ChordFinder                                  415 - G4ChordFinder
1560   o Moved simple constructor to .cc file (tog    416   o Moved simple constructor to .cc file (together with 'complex' one)
1561   o Changed fDefaultDeltaChord to a constant     417   o Changed fDefaultDeltaChord to a constant member variable (from class var.)
1562                                                  418 
1563 Nov 4th, 2003  G.Cosmo - field-V05-02-03         419 Nov 4th, 2003  G.Cosmo - field-V05-02-03
1564 ----------------------                           420 ----------------------
1565 Undocumented.                                    421 Undocumented.
1566                                                  422 
1567 Nov 4th, 2003  G.Cosmo - field-V05-02-02         423 Nov 4th, 2003  G.Cosmo - field-V05-02-02
1568 ----------------------                           424 ----------------------
1569 - G4ChordFinder.cc:                              425 - G4ChordFinder.cc:
1570   o Fixed compilation problem occuring when G    426   o Fixed compilation problem occuring when G4DEBUG_FIELD was set.
1571                                                  427 
1572 Oct 31st, 2003  G.Cosmo - field-V05-02-01        428 Oct 31st, 2003  G.Cosmo - field-V05-02-01
1573 -----------------------                          429 -----------------------
1574 - Code cleanup and removal of redundant heade    430 - Code cleanup and removal of redundant header includes, replaced
1575   where necessary by forward declarations.       431   where necessary by forward declarations.
1576                                                  432 
1577 Oct 24th, 2003  G.Cosmo - field-V05-02-00        433 Oct 24th, 2003  G.Cosmo - field-V05-02-00
1578 -----------------------                          434 -----------------------
1579 - Migrated to use new G4Exception scheme.        435 - Migrated to use new G4Exception scheme.
1580 - Updated outputs of unit tests.                 436 - Updated outputs of unit tests.
1581                                                  437 
1582 Jun 25th, 2003  J.Apostolakis - field-V05-01-    438 Jun 25th, 2003  J.Apostolakis - field-V05-01-06
1583 -----------------------------                    439 -----------------------------
1584 - Suppressed printing of statistics (by defau    440 - Suppressed printing of statistics (by default) in MagIntegrationDriver.
1585 - Fix for unused variables warning in ChordFi    441 - Fix for unused variables warning in ChordFinder.
1586                                                  442 
1587 Jun 24th, 2003  J.Apostolakis - field-V05-01-    443 Jun 24th, 2003  J.Apostolakis - field-V05-01-05
1588 -----------------------------                    444 -----------------------------
1589 - Fix for problems introduced in field-V05-01    445 - Fix for problems introduced in field-V05-01-03:
1590   o G4ChordFinder:                               446   o G4ChordFinder:
1591     - Fixed unitialised variable for next ste    447     - Fixed unitialised variable for next step (now used for optimisation).
1592     - Protected assignment of 'fLastStepEstim    448     - Protected assignment of 'fLastStepEstimate_Unconstrained' in case of
1593       unitialised value.                         449       unitialised value.
1594                                                  450 
1595 Jun 21st, 2003  J.Apostolakis - field-V05-01-    451 Jun 21st, 2003  J.Apostolakis - field-V05-01-04
1596 -----------------------------                    452 -----------------------------
1597 - G4FieldManager:                                453 - G4FieldManager:
1598   o Revised into 'slightly' abstract class wi    454   o Revised into 'slightly' abstract class with one (new) virtual method:
1599       ConfigureForTrack( const G4Track *)        455       ConfigureForTrack( const G4Track *)
1600     to enable the user to configure it with d    456     to enable the user to configure it with different accuracy parameters
1601     depending on energy, particle id, volume,    457     depending on energy, particle id, volume, or other track state.
1602     Currently by default, no such configurati    458     Currently by default, no such configuration action is undertaken.
1603                                                  459 
1604 Jun 21st, 2003  J.Apostolakis - field-V05-01-    460 Jun 21st, 2003  J.Apostolakis - field-V05-01-03
1605 -----------------------------                    461 -----------------------------
1606 - Revised G4ChordFinder:                         462 - Revised G4ChordFinder:
1607   * FindNextChord now provides next Step esti    463   * FindNextChord now provides next Step estimate (for accuracy in Integr.)
1608   * AdvanceChordLimited to use                   464   * AdvanceChordLimited to use
1609     - above extra argument to FindNextChord      465     - above extra argument to FindNextChord
1610     - the next Step argument as initial-step     466     - the next Step argument as initial-step suggested to Accurate Advance
1611 - G4MagIntegratorDriver:                         467 - G4MagIntegratorDriver:
1612   * Added extra argument to Accurate Advance:    468   * Added extra argument to Accurate Advance:
1613     hinitial: suggested initial step size        469     hinitial: suggested initial step size
1614 - Note:                                          470 - Note:
1615   * Purpose:  performance boost with small/li << 471   * Purpose:  performance boost with small/limited changes, 
1616     including minor revisions of interfaces.     472     including minor revisions of interfaces.
1617                                                  473 
1618 Jun 20th, 2003  J.Apostolakis - field-V05-01-    474 Jun 20th, 2003  J.Apostolakis - field-V05-01-02
1619 -----------------------------                    475 -----------------------------
1620 - G4MagIntegratorDriver Quick Advance:           476 - G4MagIntegratorDriver Quick Advance:
1621   o Took out two unneccessary square roots an    477   o Took out two unneccessary square roots and two divisions.
1622 - Notes:                                         478 - Notes:
1623   1) Pure magnetic, electric, spin field test    479   1) Pure magnetic, electric, spin field test are completed.
1624   2) Purpose:  performance boost with small c    480   2) Purpose:  performance boost with small changes.
1625                                                  481 
1626 Jun 20th, 2003  J.Apostolakis - field-V05-01-    482 Jun 20th, 2003  J.Apostolakis - field-V05-01-01
1627 -----------------------------                    483 -----------------------------
1628 - G4MagIntegratorDriver:                         484 - G4MagIntegratorDriver:
1629   o Corrected neglected conversion to <std> f    485   o Corrected neglected conversion to <std> from "G4std".
1630 - Migrated unit tests to <std>.                  486 - Migrated unit tests to <std>.
1631                                                  487 
1632 Jun 19th, 2003  J.Apostolakis - field-V05-01-    488 Jun 19th, 2003  J.Apostolakis - field-V05-01-00
1633 -----------------------------                 << 489 ----------------------------- 
1634 - G4ChordFinder:                                 490 - G4ChordFinder:
1635   o Corrected simple constructor to initialis    491   o Corrected simple constructor to initialise several member variables
1636     including LastStepEstimate_Unconstrained.    492     including LastStepEstimate_Unconstrained.
1637 - G4MagIntegratorDriver:                         493 - G4MagIntegratorDriver:
1638   o Keep simple statistics on number of steps    494   o Keep simple statistics on number of steps, total error and step size.
1639   o Took out an unneccessary square root (in     495   o Took out an unneccessary square root (in loop).
1640 - NOTE:    tests field0X are to be migrated.     496 - NOTE:    tests field0X are to be migrated.
1641   Purpose: fixes, small performance boost, si    497   Purpose: fixes, small performance boost, simple statistics.
1642                                                  498 
1643 Apr 2nd, 2003      G. Cosmo - field-V05-00-01    499 Apr 2nd, 2003      G. Cosmo - field-V05-00-01
1644 ---------------------------                      500 ---------------------------
1645 - Created .cc files for G4MagneticField and G    501 - Created .cc files for G4MagneticField and G4ElecroMagneticField.
1646 - Fixed definition of copy constructors in fi    502 - Fixed definition of copy constructors in fields inheritance chain.
1647 - Moved obsolete method StepWithEst() to priv    503 - Moved obsolete method StepWithEst() to private in G4RKG3_Stepper,
1648   G4CashKarpRKF45 and G4ClassicalRK4.            504   G4CashKarpRKF45 and G4ClassicalRK4.
1649 - Cleared strict pedantic warnings.              505 - Cleared strict pedantic warnings.
1650                                                  506 
1651 Feb 5th, 2003      G. Cosmo - field-V05-00-00    507 Feb 5th, 2003      G. Cosmo - field-V05-00-00
1652 ---------------------------                      508 ---------------------------
1653 - Removed redundant inclusions of PhysicalCon    509 - Removed redundant inclusions of PhysicalConstants.h or SystemOfUnits.h.
1654   Now using directly CLHEP's headers.            510   Now using directly CLHEP's headers.
1655                                                  511 
1656 Dec 12th, 2002     G. Cosmo - field-V04-01-06    512 Dec 12th, 2002     G. Cosmo - field-V04-01-06
1657 ---------------------------                      513 ---------------------------
1658 - Moved unused variable 'nStpPr' to debug sec    514 - Moved unused variable 'nStpPr' to debug section in G4MagIntegratorDriver.cc,
1659   method AccurateAdvance().                      515   method AccurateAdvance().
1660                                                  516 
1661 Dec 06th, 2002     G. Cosmo - field-V04-01-05    517 Dec 06th, 2002     G. Cosmo - field-V04-01-05
1662 ---------------------------                      518 ---------------------------
1663 - Merged changes by Makoto for migration to n    519 - Merged changes by Makoto for migration to new G4ApplicationState in
1664   messengers of unit tests.                      520   messengers of unit tests.
1665                                                  521 
1666 Nov 29th, 2002     J. Apostolakis - field-V04    522 Nov 29th, 2002     J. Apostolakis - field-V04-01-04
1667 ---------------------------------                523 ---------------------------------
1668 Further fixes for unitialised variable - in o    524 Further fixes for unitialised variable - in other steppers:
1669 G4ExplicitEuler, G4ImplicitEuler, G4ImplicitE    525 G4ExplicitEuler, G4ImplicitEuler, G4ImplicitEuler
1670                                                  526 
1671 Large memory leak fix for G4ImplicitEuler, sm    527 Large memory leak fix for G4ImplicitEuler, small for ExplicitEuler.
1672 Test accuracy requirements for spin adjusted.    528 Test accuracy requirements for spin adjusted.
1673                                                  529 
1674 Nov 20th, 2002     J. Apostolakis - field-V04    530 Nov 20th, 2002     J. Apostolakis - field-V04-01-03
1675 ---------------------------------                531 ---------------------------------
1676 Further fixes for unitialised variables:         532 Further fixes for unitialised variables:
1677                                                  533 
1678 * G4MagIntegratorStepper                         534 * G4MagIntegratorStepper
1679   -  Created instance variables for number of    535   -  Created instance variables for number of Integration, State variables
1680                                                  536 
1681 * G4MagErrorStepper                              537 * G4MagErrorStepper
1682   -  Utilise number of State variables to ini    538   -  Utilise number of State variables to initialise full state of Output.
1683                                                  539 
1684 * G4Mag_SpinEqRhs                                540 * G4Mag_SpinEqRhs
1685   -  Initialise the values of dydx that we do    541   -  Initialise the values of dydx that we do not update.
1686                                                  542 
1687 Note: Undoing these changes and the ones belo << 543 Note: Undoing these changes and the ones below would enable the user to see 
1688         if undefined values are used in varia << 544         if undefined values are used in variables that he/she expects to 
1689         have integrated.                         545         have integrated.
1690       BUT the fix assists us to find truly un    546       BUT the fix assists us to find truly undefined values elsewhere
1691         -- if they exist -- using valgrind.      547         -- if they exist -- using valgrind.
1692                                                  548 
1693 Nov  9th, 2002     J. Apostolakis - field-V04    549 Nov  9th, 2002     J. Apostolakis - field-V04-01-02
1694 ---------------------------------                550 ---------------------------------
1695 Fixes to address use of uninitialised variabl    551 Fixes to address use of uninitialised variable in seting values of FieldTrack
1696 (this was done by design, but was neither ide    552 (this was done by design, but was neither ideal or always well-behaved.)
1697 Changed:                                         553 Changed:
1698                                                  554 
1699 * G4MagIntegratorDriver                          555 * G4MagIntegratorDriver
1700   - Added instance variables for number of In    556   - Added instance variables for number of Integration, State variables
1701   - Initialise all State variables of Output     557   - Initialise all State variables of Output with values from initial variables.
1702   - Only the Integration variables will be in    558   - Only the Integration variables will be integrated
1703                                                  559 
1704 * G4ClassicalRK4 and G4MagErrorStepper           560 * G4ClassicalRK4 and G4MagErrorStepper
1705   - Copy the initial time to intermediate and << 561   - Copy the initial time to intermediate and output C-vectors, 
1706      in order to provide a zero-eth estimate     562      in order to provide a zero-eth estimate value.
1707   Note1: Should clean-up this fix, making it     563   Note1: Should clean-up this fix, making it similar to Driver (above)
1708   Note2: Should *not* be used for time varyin << 564   Note2: Should *not* be used for time varying field unless created 
1709            with at least 8 integration variab    565            with at least 8 integration variables
1710 ---------------------------------             << 566 ---------------------------------  
1711 G4ChordFinder.cc                                 567 G4ChordFinder.cc
1712   - Correction from zero dChord                  568   - Correction from zero dChord
1713       which is does not update the Unconstrai    569       which is does not update the Unconstrained step estimate (state)
1714   - Added instance variables to store number     570   - Added instance variables to store number of calls and chord-trials
1715       and new print method for 'debugging'       571       and new print method for 'debugging'
1716                                                  572 
1717 G4Mag_UsualEqRhs.cc                              573 G4Mag_UsualEqRhs.cc
1718   - Attempted approximations for speedup  *ov    574   - Attempted approximations for speedup  *overwritten* by full inverse sqrt.
1719                                                  575 
1720                                                  576 
1721 Oct  29th, 2002   J. Apostolakis - test-V04-0    577 Oct  29th, 2002   J. Apostolakis - test-V04-01-02
1722 --------------------------------                 578 --------------------------------
1723 - Changed output of tests for small output ch    579 - Changed output of tests for small output change (GeV->MeV)
1724                                                  580 
1725 Oct  29th, 2002   J. Apostolakis - test-V04-0    581 Oct  29th, 2002   J. Apostolakis - test-V04-01-02
1726 --------------------------------                 582 --------------------------------
1727 - (Only changed and tagged test subdirectory)    583 - (Only changed and tagged test subdirectory)
1728   Changed tests to use the new method SetChar << 584   Changed tests to use the new method SetChargeMomentumMass of 
1729   PropagatorInField in order to be ready for  << 585   PropagatorInField in order to be ready for its full use in 
1730   G4PropagatorInField.                           586   G4PropagatorInField.
1731   (A key problem at end-July was this non-pre    587   (A key problem at end-July was this non-preparedness of the unit tests.)
1732                                                  588 
1733 Jul  24th, 2002   G. Cosmo - field-V04-01-01     589 Jul  24th, 2002   G. Cosmo - field-V04-01-01
1734 --------------------------                       590 --------------------------
1735 - G4FieldManager[.hh.cc]: made fDefault_Delta    591 - G4FieldManager[.hh.cc]: made fDefault_Delta_One_Step_Value and
1736   fDefault_Delta_Intersection_Val normal cons    592   fDefault_Delta_Intersection_Val normal constants (not static) to
1737   resolve initialisation problems. Coworks wi    593   resolve initialisation problems. Coworks with tag "geomvol-V04-01-01".
1738   Fixes problem report #383.                     594   Fixes problem report #383.
1739                                                  595 
1740 Jul  23rd, 2002   G. Cosmo - field-V04-01-00     596 Jul  23rd, 2002   G. Cosmo - field-V04-01-00
1741 --------------------------                       597 --------------------------
1742 - G4MagIntegratorDriver.cc: cleared warning o    598 - G4MagIntegratorDriver.cc: cleared warning of unused variable.
1743   Protected variable 'nStpPr' with G4DEBUG_FI    599   Protected variable 'nStpPr' with G4DEBUG_FIELD.
1744 - Updated reference outputs and some other up    600 - Updated reference outputs and some other updates to unit tests.
1745                                                  601 
1746 Jun  25th, 2002   J. Apostolakis - field-V04-    602 Jun  25th, 2002   J. Apostolakis - field-V04-00-05
1747 --------------------------------                 603 --------------------------------
1748 - G4ChordFinder.cc                               604 - G4ChordFinder.cc
1749   In NewStep:  fixed case of stepTrial >> ste    605   In NewStep:  fixed case of stepTrial >> stepTrialOld, to take large multiple - not small;
1750        (it was treated the same as stepTrial     606        (it was treated the same as stepTrial << old)
1751   Added guard for stepTrial==0.0 in FindNextC    607   Added guard for stepTrial==0.0 in FindNextChord
1752 - G4MagIntegratorDriver.cc                       608 - G4MagIntegratorDriver.cc
1753   Added protection against error of 0.0 in Co    609   Added protection against error of 0.0 in ComputeNewStepSize.
1754                                                  610 
1755 - G4EquationOfMotion                             611 - G4EquationOfMotion
1756   Made RightHandSide an inline method         << 612   Made RightHandSide an inline method 
1757   In GetFieldValue signature of Point is doub    613   In GetFieldValue signature of Point is double[4], instead of double[3]
1758   Defined G4maximum_number_of_field_component    614   Defined G4maximum_number_of_field_components as enum
1759                                                  615 
1760 Jun   7th, 2002   J. Apostolakis - field-V04-    616 Jun   7th, 2002   J. Apostolakis - field-V04-00-04
1761 --------------------------------                 617 --------------------------------
1762  - G4Mag_SpinEqRhs.cc                            618  - G4Mag_SpinEqRhs.cc
1763     o Fix to momentum component of Rhs.          619     o Fix to momentum component of Rhs.
1764                                                  620 
1765 May  31st, 2002   J. Apostolakis - field-V04-    621 May  31st, 2002   J. Apostolakis - field-V04-00-03
1766 --------------------------------                 622 --------------------------------
1767  - G4MagHelicalStepper.icc                       623  - G4MagHelicalStepper.icc
1768     o Fix to LinearStep (correcting previous     624     o Fix to LinearStep (correcting previous fix/cosmetic)
1769  - G4ChordFinder.cc                              625  - G4ChordFinder.cc
1770     o Corrective behaviour for very small or     626     o Corrective behaviour for very small or large changes of 'new step'
1771        [observed in complex 3-d fields (purgi    627        [observed in complex 3-d fields (purging magnet),  or
1772                     approximate equations of     628                     approximate equations of motion ]
1773  - G4MagIntegratorDriver                         629  - G4MagIntegratorDriver
1774     o More information in debug printing (tan    630     o More information in debug printing (tangent cosine, norm)
1775                                                  631 
1776 May   7th, 2002   J. Apostolakis                 632 May   7th, 2002   J. Apostolakis
1777 --------------------------------                 633 --------------------------------
1778 - G4MagIntegratorDriver  -  ( on trunk )         634 - G4MagIntegratorDriver  -  ( on trunk )
1779   * Fix to update the field track for steps s << 635   * Fix to update the field track for steps smaller than the chord finder's 
1780 minstep.                                      << 636 minstep. 
1781                                                  637 
1782                                                  638 
1783 April 19th, 2002  J. Apostolakis   (not inclu    639 April 19th, 2002  J. Apostolakis   (not included in tag field-V04-00-02)
1784 --------------------------------                 640 --------------------------------
1785 - G4MagIntegratorDriver.hh,cc     (on trunk)     641 - G4MagIntegratorDriver.hh,cc     (on trunk)
1786   * Bug fix:  last step can now only be trigg    642   * Bug fix:  last step can now only be triggerred if x+h > x2.
1787   * Debugging methods improved.                  643   * Debugging methods improved.
1788                                                  644 
1789 May   7th, 2002   J. Apostolakis - field-V04-    645 May   7th, 2002   J. Apostolakis - field-V04-00-02
1790 --------------------------------                 646 --------------------------------
1791  Tag including only two changes below:           647  Tag including only two changes below:
1792   - Putting aside the other fixes/changes (as << 648   - Putting aside the other fixes/changes (as the one above) to 
1793 G4MagIntegratorDriver, tagging only the fix t << 649 G4MagIntegratorDriver, tagging only the fix to update the field track 
1794 for steps smaller than the chord finder's min    650 for steps smaller than the chord finder's minstep.
1795                                                  651 
1796 May   7th, 2002   J. Apostolakis                 652 May   7th, 2002   J. Apostolakis
1797 --------------------------------                 653 --------------------------------
1798 - G4MagIntegratorDriver  -  **  branch ** on     654 - G4MagIntegratorDriver  -  **  branch ** on 1.20 **
1799   * Fix to update the field track for steps s << 655   * Fix to update the field track for steps smaller than the chord finder's 
1800 minstep.                                      << 656 minstep. 
1801                                                  657 
1802 May   7th, 2002   J. Apostolakis                 658 May   7th, 2002   J. Apostolakis
1803 --------------------------------                 659 --------------------------------
1804 - G4MagIntegratorStepper                         660 - G4MagIntegratorStepper
1805   * Changed RightHandSide from a virtual meth << 661   * Changed RightHandSide from a virtual method to an inline (non-virtual) 
1806       method -- it is not and should not be c    662       method -- it is not and should not be changed by derived classes.
1807                                                  663 
1808 Mar 28th, 2002  J. Apostolakis - field-V04-00    664 Mar 28th, 2002  J. Apostolakis - field-V04-00-01
1809 -----------------------                          665 -----------------------
1810 - Fixed LinearStep in G4MagHelicalStepper (ex << 666 - Fixed LinearStep in G4MagHelicalStepper (expected unit direction), 
1811     that had not been updated for new integra    667     that had not been updated for new integration variable (momentum).
1812     --> found in testing helical steppers in  << 668     --> found in testing helical steppers in BaBar setup, 
1813          in region of negligible field.          669          in region of negligible field.
1814                                                  670 
1815 - Changed maximum number of steps in driver,  << 671 - Changed maximum number of steps in driver, 
1816     halving from 500/order to 250/order.         672     halving from 500/order to 250/order.
1817                                                  673 
1818 Mar 28th, 2002  J. Apostolakis                   674 Mar 28th, 2002  J. Apostolakis
1819 -----------------------                          675 -----------------------
1820 - Committed directory "OtherField" with examp    676 - Committed directory "OtherField" with examples of fields,
1821     Delphi, Quadropole etc.                      677     Delphi, Quadropole etc.
1822                                                  678 
1823 - Updated outputs of testPropagateMagField fo    679 - Updated outputs of testPropagateMagField for new version of source,
1824     that has 3rd test case.                      680     that has 3rd test case.
1825                                                  681 
1826 - Added new runs and outputs for testProElect << 682 - Added new runs and outputs for testProElectroMagField, with 
1827     several steppers, and modified test scrip    683     several steppers, and modified test script test.sh accordingly.
1828                                                  684 
1829                                                  685 
1830 Feb  2nd, 2002   V. Grichine                     686 Feb  2nd, 2002   V. Grichine
1831 ------------------------                         687 ------------------------
1832 Update of test/field02 to utilise new feature << 688 Update of test/field02 to utilise new features 
1833   - for Electric Field, to signal that a fiel    689   - for Electric Field, to signal that a field modifies the energy;
1834   - updating of time by integration, for time    690   - updating of time by integration, for time dependent fields.
1835                                                  691 
1836 Jan 10th, 2002  G. Cosmo - field-V04-00-00       692 Jan 10th, 2002  G. Cosmo - field-V04-00-00
1837 ------------------------                         693 ------------------------
1838 - Activated G4DEBUG_FIELD in GNUmakefile.        694 - Activated G4DEBUG_FIELD in GNUmakefile.
1839                                                  695 
1840 Jan 7th, 2002  J. Apostolakis                    696 Jan 7th, 2002  J. Apostolakis
1841 -----------------------------                    697 -----------------------------
1842 - G4MagHelicalStepper.cc: renamed local varia    698 - G4MagHelicalStepper.cc: renamed local variables "*Momentum*" to "*Velocity*".
1843                                                  699 
1844 Dec 4th, 2001  G. Cosmo - field-V03-02-08        700 Dec 4th, 2001  G. Cosmo - field-V03-02-08
1845 -----------------------                          701 -----------------------
1846 - Fixed interface to virtual functions in the    702 - Fixed interface to virtual functions in the inheritance chain.
1847   Added 'virtual' qualifier to destructor and    703   Added 'virtual' qualifier to destructor and GetFieldValue() for subclasses
1848   of G4Field which may act as base class for     704   of G4Field which may act as base class for user-defined fields.
1849   Modified files: G4MagneticField.hh, G4Unifo    705   Modified files: G4MagneticField.hh, G4UniformElectricField[.hh.cc],
1850                   G4UniformMagField.hh.          706                   G4UniformMagField.hh.
1851 - G4ChordFinder.cc: the unphysical curve leng    707 - G4ChordFinder.cc: the unphysical curve length exception has been moved to
1852   inside #ifdef G4DEBUG_FIELD. Other #ifdef r    708   inside #ifdef G4DEBUG_FIELD. Other #ifdef renamed to G4DEBUG_FIELD.
1853 - G4LineSection[.hh.cc]: correction for A=B w    709 - G4LineSection[.hh.cc]: correction for A=B when the distance from P to A
1854   is returned (V.Grichine).                      710   is returned (V.Grichine).
1855                                                  711 
1856 Nov 28th, 2001  J. Apostolakis - field-V03-02    712 Nov 28th, 2001  J. Apostolakis - field-V03-02-07
1857 ------------------------------                   713 ------------------------------
1858 G4FieldManager                                   714 G4FieldManager
1859 - Added fFieldChangesEnergy data member and g    715 - Added fFieldChangesEnergy data member and get/set methods
1860  ( required to allow transportation to know h    716  ( required to allow transportation to know how to calculate end-time,
1861    enabling the integration of time only for     717    enabling the integration of time only for electric fields. )
1862                                                  718 
1863 Nov 28th, 2001  J. Apostolakis - field-V03-02    719 Nov 28th, 2001  J. Apostolakis - field-V03-02-06
1864 ------------------------------                   720 ------------------------------
1865 Small fixes only:                                721 Small fixes only:
1866                                                  722 
1867 G4CashKarpRKF45                                  723 G4CashKarpRKF45
1868 - fixed deletion of unassigned pointer/array     724 - fixed deletion of unassigned pointer/array in destructor. (-> Volodya Velev)
1869                                                  725 
1870 G4EqMagElectricField                             726 G4EqMagElectricField
1871 - bug fixed in the formula for inverse veloci    727 - bug fixed in the formula for inverse velocity             (-> V. Grichine)
1872                                                  728 
1873 Nov 21st, 2001  G. Cosmo - field-V03-02-05       729 Nov 21st, 2001  G. Cosmo - field-V03-02-05
1874 ------------------------                         730 ------------------------
1875 - Protected verbose warnings with G4FIELD_DEB    731 - Protected verbose warnings with G4FIELD_DEBUG flag in G4ChordFinder.cc
1876   (V.Grichine).                                  732   (V.Grichine).
1877 - Replaced G4DEBUG with G4DEBUG_FIELD in G4Ma    733 - Replaced G4DEBUG with G4DEBUG_FIELD in G4MagIntegratorDriver.cc.
1878 - Updates to unit test field02.                  734 - Updates to unit test field02.
1879                                                  735 
1880 Nov 13th, 2001  G. Cosmo - field-V03-02-04       736 Nov 13th, 2001  G. Cosmo - field-V03-02-04
1881 ------------------------                         737 ------------------------
1882 - Removed warnings on gcc-2.95.2.                738 - Removed warnings on gcc-2.95.2.
1883 - Included unit tests field01, field02, field    739 - Included unit tests field01, field02, field03.
1884                                                  740 
1885 Nov 9th, 2001  J. Apostolakis - field-V03-02-    741 Nov 9th, 2001  J. Apostolakis - field-V03-02-03
1886 -----------------------------                    742 -----------------------------
1887 Motivated by the use case of an Electric Fiel    743 Motivated by the use case of an Electric Field,
1888  - in order to achieve reasonable accuracy in    744  - in order to achieve reasonable accuracy in time integration,
1889  - and to enable fields that vary with the gl    745  - and to enable fields that vary with the global time)
1890 we (John Ap. and V. Grichine) changed the fol    746 we (John Ap. and V. Grichine) changed the following:
1891                                                  747 
1892 - Modified G4Field to allow the time in the G << 748 - Modified G4Field to allow the time in the GetFieldValue method 
1893      - as 4th component of the "position" arr    749      - as 4th component of the "position" array.
1894                                                  750 
1895 - Modified EquationOfMotion to provide the ti    751 - Modified EquationOfMotion to provide the time to the GetFieldValue method
1896    of G4Field                                    752    of G4Field
1897       * as the 4th component of a position /     753       * as the 4th component of a position / time  4-array
1898       * in place of only position as a 3-arry    754       * in place of only position as a 3-arry
1899                                                  755 
1900 - Added the global time as variable to be int << 756 - Added the global time as variable to be integrated over in the 
1901    case of an Electric Field                     757    case of an Electric Field
1902                                                  758 
1903 Support for these modifications is required i    759 Support for these modifications is required in G4Transportation.
1904                                                  760 
1905 (Better support will require either              761 (Better support will require either
1906  - a modification in G4FieldTrack to indicate    762  - a modification in G4FieldTrack to indicate whether the time has been
1907     integrated or not.                        << 763     integrated or not.  
1908  - or additionally making the time calculatio    764  - or additionally making the time calculation a property of G4FieldTrack,
1909     bring in code to do it in from G4Transpor    765     bring in code to do it in from G4Transportation.)
1910                                                  766 
1911                                                  767 
1912 Nov  8th, 2001  J. Apostolakis - field-V03-02    768 Nov  8th, 2001  J. Apostolakis - field-V03-02-02
1913 ------------------------                         769 ------------------------
1914 - Introduced several changes in G4MagIntegrat    770 - Introduced several changes in G4MagIntegratorDriver.
1915                                                  771 
1916    It now respects its minimum driver step si    772    It now respects its minimum driver step size in AccurateAdvance.
1917      * whereas before it did not.                773      * whereas before it did not.
1918                                                  774 
1919    Modified maximum number of steps, lowering    775    Modified maximum number of steps, lowering by factor of 10.
1920      -> it should reduce the time spent integ    776      -> it should reduce the time spent integrating low energy particles,
1921    in some cases where it is unneccessary.       777    in some cases where it is unneccessary.
1922                                                  778 
1923    Protected printing of (nearly?) all warnin    779    Protected printing of (nearly?) all warnings with a G4DEBUG_FIELD  #ifdef.
1924                                                  780 
1925                                                  781 
1926 Nov 05th, 2001  G. Cosmo - field-V03-02-01       782 Nov 05th, 2001  G. Cosmo - field-V03-02-01
1927 ------------------------                         783 ------------------------
1928 - Fixed trivial warnings on Linux-g++.           784 - Fixed trivial warnings on Linux-g++.
1929                                                  785 
1930 Aug 27th, 2001  J. Apostolakis - field-V03-02    786 Aug 27th, 2001  J. Apostolakis - field-V03-02-00
1931 ------------------------------                   787 ------------------------------
1932 Tagged last change.                              788 Tagged last change.
1933 This tag is utilised in transport-V03-02-01 (    789 This tag is utilised in transport-V03-02-01 (which requires it).
1934                                                  790 
1935 Aug 16th, 2001  J. Apostolakis                   791 Aug 16th, 2001  J. Apostolakis
1936 ------------------------------                   792 ------------------------------
1937 G4ChordFinder:                                   793 G4ChordFinder:
1938  Added method to erase/reset the state of the    794  Added method to erase/reset the state of the StepEstimate.
1939  This is unwanted internal state that was car    795  This is unwanted internal state that was carried between tracks and
1940      events as a side effect.                    796      events as a side effect.
1941                                                  797 
1942  Calling this at the start of each track, it     798  Calling this at the start of each track, it is now possible to
1943  eliminate a non-repeatability that was possi    799  eliminate a non-repeatability that was possible due to this.
1944     ( It has been observed in particular in v    800     ( It has been observed in particular in vaccuum. )
1945                                                  801 
1946 May 23rd, 2001  J. Apostolakis - field-V03-01    802 May 23rd, 2001  J. Apostolakis - field-V03-01-02
1947 ------------------------------                   803 ------------------------------
1948 - Added Exception to G4RKG3Stepper constructo    804 - Added Exception to G4RKG3Stepper constructor: the class does not work
1949                                                  805 
1950 May 23rd, 2001  J. Apostolakis - field-V03-01    806 May 23rd, 2001  J. Apostolakis - field-V03-01-01
1951 ------------------------------                   807 ------------------------------
1952 - Fixed G4FieldManager constructors to give d    808 - Fixed G4FieldManager constructors to give default values to delta
1953   parameters.                                    809   parameters.
1954                                                  810 
1955 - Updated testPropagateSpin (it now compiles) << 811 - Updated testPropagateSpin (it now compiles), 
1956    and some outputs of testPropagateMagField     812    and some outputs of testPropagateMagField (1 to 5)
1957                                                  813 
1958                                                  814 
1959 Apr 12th, 2001  P. Gumplinger - field-V03-01-    815 Apr 12th, 2001  P. Gumplinger - field-V03-01-00
1960 -----------------------------                    816 -----------------------------
1961 - Updated G4Mag_SpinEqRhs.hh and G4Mag_SpinEq    817 - Updated G4Mag_SpinEqRhs.hh and G4Mag_SpinEqRhs.cc for correction
1962   to spin tracking.                              818   to spin tracking.
1963                                                  819 
1964 Apr 04th, 2001  G. Cosmo - field-V03-00-05       820 Apr 04th, 2001  G. Cosmo - field-V03-00-05
1965 ------------------------                         821 ------------------------
1966 - G4FieldTrack.icc: fixed pedantic warnings o    822 - G4FieldTrack.icc: fixed pedantic warnings on Linux-g++.
1967                                                  823 
1968 Mar 23rd, 2001  J. Apostolakis - field-V03-00    824 Mar 23rd, 2001  J. Apostolakis - field-V03-00-04
1969 ------------------------------                   825 ------------------------------
1970 - Electric Field unit test now works: test ru    826 - Electric Field unit test now works: test runs until completion.
1971    Test outputs saved (on Linux).                827    Test outputs saved (on Linux).
1972                                                  828 
1973 - Fixed src/G4UniformElectricField.cc to set     829 - Fixed src/G4UniformElectricField.cc to set correct field components
1974                                       (compat    830                                       (compatible with Equation of Motion
1975                                        G4EqMa    831                                        G4EqMagElectricField )
1976                                                  832 
1977 - Tidied G4FieldTrack                            833 - Tidied G4FieldTrack
1978    * deleted obsolete methods Set/Get Momentu    834    * deleted obsolete methods Set/Get MomentumModulus() and its data member.
1979    * in constructor to set the value of the s << 835    * in constructor to set the value of the spin to (0.0, 0.0, 0.0) 
1980           if pSpin is null.  (It was undefine    836           if pSpin is null.  (It was undefined.)
1981                                                  837 
1982 Mar 23rd, 2001  J. Apostolakis - field-V03-00    838 Mar 23rd, 2001  J. Apostolakis - field-V03-00-03
1983 ------------------------------                   839 ------------------------------
1984 - Fixed (hacked) CashKarp to work using Auxil << 840 - Fixed (hacked) CashKarp to work using Auxiliary Stepper.   
1985                                                  841 
1986 - Modified G4MagIntegratorStepper             << 842 - Modified G4MagIntegratorStepper 
1987      to use pointer to G4EquationOfMotion        843      to use pointer to G4EquationOfMotion
1988             instead of G4Mag_EqRhs               844             instead of G4Mag_EqRhs
1989                                                  845 
1990 - Design iteration appears neccessary            846 - Design iteration appears neccessary
1991                                                  847 
1992 Mar 23rd, 2001  J. Apostolakis - field-V03-00    848 Mar 23rd, 2001  J. Apostolakis - field-V03-00-02
1993 ------------------------------                   849 ------------------------------
1994 - Fixed G4MagHelicalStepper::AdvanceHelix for    850 - Fixed G4MagHelicalStepper::AdvanceHelix for momentum, allowing
1995     the possibility of (correct) use of all H << 851     the possibility of (correct) use of all Helical Steppers. 
1996                                                  852 
1997 - test/testProElectroMagField.cc updated for     853 - test/testProElectroMagField.cc updated for momentum.
1998     (Not yet updated: Spin tests)                854     (Not yet updated: Spin tests)
1999                                                  855 
2000                                                  856 
2001 Mar 19th, 2001  J. Apostolakis - field-V03-00    857 Mar 19th, 2001  J. Apostolakis - field-V03-00-01
2002 ------------------------------                   858 ------------------------------
2003 - Tagging the modification of several classes    859 - Tagging the modification of several classes to integrate in momentum*c_light
2004     instead of velocity.                      << 860     instead of velocity.  
2005   Reason for change:  Velocity integration ca    861   Reason for change:  Velocity integration can result in superluminar
2006     velocities,  due to arithmetic inaccuraci    862     velocities,  due to arithmetic inaccuracies.
2007   Classes modified:                           << 863   Classes modified: 
2008     G4FieldTrack,   (Changed components 3,4,5    864     G4FieldTrack,   (Changed components 3,4,5 of SixVector to Momentum,
2009     G4Mag_EqRhs, G4Mag_UsualEqRhs, G4EqMagEle    865     G4Mag_EqRhs, G4Mag_UsualEqRhs, G4EqMagElectricField
2010                                                  866 
2011 Feb 20th, 2001  J. Apostolakis                << 867 Feb 20th, 2001  J. Apostolakis 
2012                                                  868 
2013 - Modified several classes to integrate in mo    869 - Modified several classes to integrate in momentum instead of velocity.
2014                                                  870 
2015  G4FieldTrack:                                   871  G4FieldTrack:
2016      Changed components 3,4,5 of SixVector to    872      Changed components 3,4,5 of SixVector to Momentum,
2017      Modified constructor                        873      Modified constructor
2018      Added energy calculation to "LoadFromArr    874      Added energy calculation to "LoadFromArray" method
2019      GetEnergy method is now implemented.     << 875      GetEnergy method is now implemented. 
2020      Deleted obsolete (old) method names for     876      Deleted obsolete (old) method names for Curve and Position. New have "Get"
2021                                                  877 
2022  G4ChordFinder                                   878  G4ChordFinder
2023      Renamed old-method names of Field Track  << 879      Renamed old-method names of Field Track to new ones. 
2024                                                  880 
2025 Jan 29th, 2001  G. Cosmo - field-V03-00-00       881 Jan 29th, 2001  G. Cosmo - field-V03-00-00
2026 -------------------------                        882 -------------------------
2027                                                  883 
2028 - Minor fix to G4MagneticField.hh: added expl    884 - Minor fix to G4MagneticField.hh: added explicit call to G4Field() in
2029   copy constructor. Fixes report #205.           885   copy constructor. Fixes report #205.
2030                                                  886 
2031 Nov 20th, 2000  G. Cosmo - field-V02-00-02       887 Nov 20th, 2000  G. Cosmo - field-V02-00-02
2032                                                  888 
2033 - Fixes to remove warnings from "-Wall -ansi     889 - Fixes to remove warnings from "-Wall -ansi -pedantic" g++ compiler options:
2034   o commented out variables declared and not     890   o commented out variables declared and not used.
2035   o fixed declaration of variables used befor    891   o fixed declaration of variables used before being initialised.
2036   o fixed order of initialisation of member d    892   o fixed order of initialisation of member data in constructors.
2037   o fixed usage of unsigned-int (size_t) for     893   o fixed usage of unsigned-int (size_t) for array indeces.
2038                                                  894 
2039 Nov 9th, 2000  G. Cosmo - field-V02-00-01        895 Nov 9th, 2000  G. Cosmo - field-V02-00-01
2040                                                  896 
2041 - G4FieldManager: added check on existence of    897 - G4FieldManager: added check on existence of allocated fChordFinder
2042   in CreateChordFinder(G4MagneticField*) meth    898   in CreateChordFinder(G4MagneticField*) method.
2043                                                  899 
2044 Nov 1st, 2000  G. Cosmo - field-V02-00-00        900 Nov 1st, 2000  G. Cosmo - field-V02-00-00
2045                                                  901 
2046 - QA code revision and cleanup (+fixes from C    902 - QA code revision and cleanup (+fixes from CodeWizard filtering):
2047   o Added (private) declarations of copy cons    903   o Added (private) declarations of copy constructor and assignment operator
2048     where needed.                                904     where needed.
2049   o Added "const" qualifier to accessor metho    905   o Added "const" qualifier to accessor methods, wherever needed.
2050   o Added equality check on operator= where n    906   o Added equality check on operator= where needed.
2051   o Made destructor "virtual" for classes hav    907   o Made destructor "virtual" for classes having virtual methods,
2052     wherever missing.                            908     wherever missing.
2053   o Changed virtual functions to non-inline w    909   o Changed virtual functions to non-inline wherever's the case.
2054   o Changed return value to be "const" pointe    910   o Changed return value to be "const" pointer to functions:
2055     - G4EquationOfMotion::GetFieldObj()          911     - G4EquationOfMotion::GetFieldObj()
2056     - G4FieldManager::GetDetectorField()         912     - G4FieldManager::GetDetectorField()
2057     - G4MagIntegratorDriver::GetStepper()        913     - G4MagIntegratorDriver::GetStepper()
2058   o Fixed and corrected signature to G4MagInt    914   o Fixed and corrected signature to G4MagIntegratorDriver::SetHmin().
2059   o Added "inline" qualifier to methods' decl    915   o Added "inline" qualifier to methods' declarations.
2060   o General cosmetics                            916   o General cosmetics
2061                                                  917 
2062 Jun 2nd, 2000  J. Apostolakis                    918 Jun 2nd, 2000  J. Apostolakis
2063 - G4FieldManager[.hh.icc]                        919 - G4FieldManager[.hh.icc]
2064   o Added DeltaIntersection and DeltaOneStep     920   o Added DeltaIntersection and DeltaOneStep to FieldManager: added
2065     Get/Set methods and SetAccuraciesWithDelt    921     Get/Set methods and SetAccuraciesWithDeltaOneStep().
2066                                                  922 
2067 May 31st, 2000  J. Apostolakis - field-V01-01    923 May 31st, 2000  J. Apostolakis - field-V01-01-03
2068                                                  924 
2069 include/G4FieldManager.hh,icc                    925 include/G4FieldManager.hh,icc
2070   o Moved Delta Intersection and Delta One St    926   o Moved Delta Intersection and Delta One Step to FieldManager
2071      (from Propagator in Field),  to allow th    927      (from Propagator in Field),  to allow them to differ over the detector.
2072                                                  928 
2073 May 11th, 2000  J. Apostolakis - field-V01-01    929 May 11th, 2000  J. Apostolakis - field-V01-01-02
2074                                                  930 
2075 - G4ChordFinder[.hh.cc]                          931 - G4ChordFinder[.hh.cc]
2076   o Modified method for finding new trial ste    932   o Modified method for finding new trial step.
2077     New method assumes a quadratic relationsh    933     New method assumes a quadratic relationship between step-length and d_chord:
2078             d_chord  proportional  to  step-l    934             d_chord  proportional  to  step-lenght ^ 2
2079   o Added two small refinement in order to av    935   o Added two small refinement in order to avoid unneccesary extra step due to
2080     small numerical inaccuracies in estimatio    936     small numerical inaccuracies in estimation:
2081       FindNextChord                              937       FindNextChord
2082           to first step       use  (1-0.001)     938           to first step       use  (1-0.001) * last-step-estimate
2083       New Step:                                  939       New Step:
2084           to subsequent step  use    trial_st    940           to subsequent step  use    trial_step = 0.98 * estimate
2085                                                  941 
2086 May 10th, 2000  G. Cosmo                         942 May 10th, 2000  G. Cosmo
2087                                                  943 
2088 - G4MagneticField.hh: minor fix to dummy impl    944 - G4MagneticField.hh: minor fix to dummy implementation of assignment
2089   operator.                                      945   operator.
2090                                                  946 
2091 May    9th, 2000   J. Apostolakis - field-V01    947 May    9th, 2000   J. Apostolakis - field-V01-01-01
2092                                                  948 
2093 - G4MagErrorStepper:                          << 949 - G4MagErrorStepper: 
2094     Modified DistChord to check whether the c    950     Modified DistChord to check whether the chord endpoint are the same point.
2095                                                  951 
2096 - G4RKG3_Stepper:                                952 - G4RKG3_Stepper:
2097     Deleted error message from StepNoErr, as     953     Deleted error message from StepNoErr, as it is used in Stepper.
2098                                                  954 
2099 - G4MagIntegratorDriver:                         955 - G4MagIntegratorDriver:
2100     Changed the condition for the debug outpu    956     Changed the condition for the debug output  (~cosmetic)
2101                                                  957 
2102                                                  958 
2103 April 27th, 2000   G. Cosmo                      959 April 27th, 2000   G. Cosmo
2104                                                  960 
2105 - Reorganised comments for the Software Refer    961 - Reorganised comments for the Software Reference Manual.
2106 - Moved inlined definition to .icc files, whe    962 - Moved inlined definition to .icc files, where needed.
2107   Created: G4ChordFinder.icc and G4FieldManag    963   Created: G4ChordFinder.icc and G4FieldManager.icc.
2108                                                  964 
2109 April 13th, 2000   J. Apostolakis - field-V01    965 April 13th, 2000   J. Apostolakis - field-V01-01-00
2110                                                  966 
2111 - Modified signature to function DumbStepper(    967 - Modified signature to function DumbStepper() in classes:
2112   G4HelixExplicitEuler, G4HelixHeum, G4HelixI    968   G4HelixExplicitEuler, G4HelixHeum, G4HelixImplicitEuler,
2113   G4HelixSimpleRunge and G4MagHelicalStepper.    969   G4HelixSimpleRunge and G4MagHelicalStepper.
2114 - Modified signature and implementation of fu    970 - Modified signature and implementation of function MagFieldEvaluate()
2115   in G4MagHelicalStepper, to use Field (as Th    971   in G4MagHelicalStepper, to use Field (as ThreeVector) in place of dydx.
2116 - Made Richardson extrapolation optional (it     972 - Made Richardson extrapolation optional (it is unclear if
2117   it offers benefit) in G4MagHelicalStepper.     973   it offers benefit) in G4MagHelicalStepper.
2118 - Updated unit test testPropagateMagField and    974 - Updated unit test testPropagateMagField and reference output.
2119 - G4LineSection: fixes to prevent divisions b    975 - G4LineSection: fixes to prevent divisions by 0. and sqrt(<0)
2120   (V.Grichine).                                  976   (V.Grichine).
2121                                                  977 
2122 January  19th, 2000   G. Cosmo - field-V01-00    978 January  19th, 2000   G. Cosmo - field-V01-00-00
2123                                                  979 
2124 Syncronized versioning of files with HEAD aft    980 Syncronized versioning of files with HEAD after ISO-C++ migration
2125 (essentially CVS header changes).                981 (essentially CVS header changes).
2126                                                  982 
2127 December  7th, 1999   J. Apostolakis - field-    983 December  7th, 1999   J. Apostolakis - field-V00-01-01a
2128                                                  984 
2129 For negative or very small curve lengths (h)     985 For negative or very small curve lengths (h) we suppress writing an error
2130 (about the distance of endpoints being furthe    986 (about the distance of endpoints being further than the curve length),
2131 as it is meaningless.                            987 as it is meaningless.
2132                                                  988 
2133 November 23rd, 1999   J. Apostolakis - field-    989 November 23rd, 1999   J. Apostolakis - field-V00-01-01
2134                                                  990 
2135 Tagged this sub-category's state in geometry-    991 Tagged this sub-category's state in geometry-V00-01-01
2136                                                  992 
2137                                                  993 
2138 July      6th, 1999   J. Apostolakis - field-    994 July      6th, 1999   J. Apostolakis - field-01-00-07
2139                                                  995 
2140 These fixes and those in field-01-00-06 and f    996 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    997 from the need to cope with the imprecision of the integration, and its
2142 interaction with paths that are rather straig << 998 interaction with paths that are rather straight. 
2143                                                  999 
2144 G4MagIntegrationDriver:                       << 1000 G4MagIntegrationDriver: 
2145  i) AccurateAdvance now that the chord distan    1001  i) AccurateAdvance now that the chord distance is smaller than the curve len-
2146 gth (times 1+epsilon).                           1002 gth (times 1+epsilon).
2147                                                  1003 
2148 ii) OneGoodStep and QuickAdvance considers th    1004 ii) OneGoodStep and QuickAdvance considers the error of the velocity as well as
2149 the error of the position - and ensure that b    1005 the error of the position - and ensure that both relative errors are within
2150 the "eps" maximum given.                         1006 the "eps" maximum given.
2151                                                  1007 
2152 G4ChordFinder:                                   1008 G4ChordFinder:
2153   Having found that the curve_length vs ABdis    1009   Having found that the curve_length vs ABdist disrepancy has its basis in
2154 the imprecision of the integration:              1010 the imprecision of the integration:
2155   i) Modified the exception in this case to h    1011   i) Modified the exception in this case to happen only for very large
2156    relative disrepancies ( 10 * eps ).           1012    relative disrepancies ( 10 * eps ).
2157  ii) Undertaken a default corrective action i    1013  ii) Undertaken a default corrective action in all other cases
2158 Note that this disrepancy only happens for ve    1014 Note that this disrepancy only happens for very straight sections of track -
2159 ie step lengths much smaller than the curvatu    1015 ie step lengths much smaller than the curvature of the track.
2160                                                  1016 
2161 July      1st, 1999   J. Apostolakis - field-    1017 July      1st, 1999   J. Apostolakis - field-01-00-06a
2162                                                  1018 
2163 In order to cope with the anomalous condition    1019 In order to cope with the anomalous condition created by candidate fix
2164 in G4PropagatorInField,  we ensure that the f    1020 in G4PropagatorInField,  we ensure that the fraction_AE is always between
2165 0 and 1.0.  (giving it a default value of 0.5    1021 0 and 1.0.  (giving it a default value of 0.5 whenever it is wrong).
2166 ( in G4ChordFinder::ApproxCurvePointV )          1022 ( in G4ChordFinder::ApproxCurvePointV )
2167                                                  1023 
2168 June     29th, 1999   J. Apostolakis - field-    1024 June     29th, 1999   J. Apostolakis - field-01-00-06
2169                                                  1025 
2170   I re-instated a check on whether the input     1026   I re-instated a check on whether the input distance along the curve between
2171 the two input curve points is truly greater t    1027 the two input curve points is truly greater than their linear distance.
2172 ( in G4ChordFinder::ApproxCurvePointV )          1028 ( in G4ChordFinder::ApproxCurvePointV )
2173                                                  1029 
2174 The condition that prints out a warning messa    1030 The condition that prints out a warning message has been altered to
2175 take into account the case of a very small fi << 1031 take into account the case of a very small final interval. 
2176 ( in G4MagInt_Driver::AccurateAdvance )          1032 ( in G4MagInt_Driver::AccurateAdvance )
2177                                                  1033 
2178 June     ??th, 1999   J. Apostolakis - field-    1034 June     ??th, 1999   J. Apostolakis - field-01-00-05
2179                                                  1035 
2180 The condition that prints out a warning messa << 1036 The condition that prints out a warning message was changed to delete 
2181 an incorrect comparison.                      << 1037 an incorrect comparison. 
2182 ( in G4MagInt_Driver::AccurateAdvance )          1038 ( in G4MagInt_Driver::AccurateAdvance )
2183                                                  1039 
2184 April    19th, 1999   J. Apostolakis - field-    1040 April    19th, 1999   J. Apostolakis - field-01-00-04
2185                                                  1041 
2186 G4MagErrorStepper: Cosmetic changes to name o    1042 G4MagErrorStepper: Cosmetic changes to name of data members
2187                                                  1043 
2188 March     4th, 1999   J. Apostolakis - field-    1044 March     4th, 1999   J. Apostolakis - field-01-00-03
2189                                                  1045 
2190 Corrected delete statement of arrays to use '    1046 Corrected delete statement of arrays to use 'delete[]' instead of simple delete
2191 in destructors of 2 steppers (G4CashKarpRKF45    1047 in destructors of 2 steppers (G4CashKarpRKF45, G4SimpleHeum)
2192                                                  1048 
2193 February 17th, 1999   J. Apostolakis -  field    1049 February 17th, 1999   J. Apostolakis -  field-01-00-02
2194                                                  1050 
2195  Moved G4PropagatorInField files to geometry/ << 1051  Moved G4PropagatorInField files to geometry/volumes. 
2196  Updated GNUmakefile not to depend on geometr    1052  Updated GNUmakefile not to depend on geometry/volumes anymore.
2197    -> the known circular dependency is remove    1053    -> the known circular dependency is removed
2198                                                  1054 
2199                                                  1055 
2200 February 12th, 1999   J. Apostolakis -  field    1056 February 12th, 1999   J. Apostolakis -  field-spin1-works1     (act Feb17)
2201                                                  1057 
2202   A tag that contains the first version that     1058   A tag that contains the first version that worked with spin (in Peter G.'s
2203 directory).   G4PropagateInSpin is still in t    1059 directory).   G4PropagateInSpin is still in this version.  A small change
2204 in a branch of the header file was needed.    << 1060 in a branch of the header file was needed. 
2205                                                  1061 
2206                                                  1062 
2207 February 10th, 1999   J. Apostolakis          << 1063 February 10th, 1999   J. Apostolakis 
2208                                                  1064 
2209 All the following changes are needed for ener    1065 All the following changes are needed for energy integration also:
2210                                                  1066 
2211 G4ChordFinder now passes to the constructed d    1067 G4ChordFinder now passes to the constructed driver the number of variables.
2212 Because of the need for the stepper to know a    1068 Because of the need for the stepper to know about it in its Abstract interface
2213                                                  1069 
2214 -> Moved theNumberOfVariables  from derived c    1070 -> Moved theNumberOfVariables  from derived class G4MagErrorStepper
2215                                to base class     1071                                to base class G4MagIntegratorStepper
2216                                                  1072 
2217 As a consequense the classes that derived fro    1073 As a consequense the classes that derived from G4MagIntegratorStepper directly
2218 were changed: G4CashKarpRKF45, G4MagHelicalSt << 1074 were changed: G4CashKarpRKF45, G4MagHelicalStepper, 
2219                                                  1075 
2220                                                  1076 
2221 February  9th, 1999    J. Apostolakis            1077 February  9th, 1999    J. Apostolakis
2222                                                  1078 
2223 Equation of Motion:                              1079 Equation of Motion:
2224 G4MagEqRhs.hh  Made SetChargeMomentumMass vir    1080 G4MagEqRhs.hh  Made SetChargeMomentumMass virtual, so that G4Mag_SpinEqRhs
2225                  can initialise its constants << 1081                  can initialise its constants too. 
2226                                                  1082 
2227                                                  1083 
2228 February  9th, 1999   P. Gumplinger              1084 February  9th, 1999   P. Gumplinger
2229                                                  1085 
2230 Added Equation of Motion for Spin in Magnetic    1086 Added Equation of Motion for Spin in Magnetic Field.
2231                                                  1087 
2232                                                  1088 
2233 February 17th, 1999   J. Apostolakis  -  fiel    1089 February 17th, 1999   J. Apostolakis  -  field-01-00-01
2234   --->  date is correct, made sure that tag d    1090   --->  date is correct, made sure that tag does not include above fixes!
2235                                               << 1091   
2236  Moved G4PropagatorInField files to geometry/ << 1092  Moved G4PropagatorInField files to geometry/volumes. 
2237  Updated GNUmakefile not to depend on geometr    1093  Updated GNUmakefile not to depend on geometry/volumes anymore.
2238    -> the known circular dependency is remove    1094    -> the known circular dependency is removed
2239                                                  1095 
2240                                                  1096 
2241 ---------------------------------------------    1097 ---------------------------------------------------------------------------
2242     ------    Geant 4  Production Release   -    1098     ------    Geant 4  Production Release   ------------
2243 ---------------------------------------------    1099 --------------------------------------------------------------------------
2244 Nov   19th, 1998   J. Apostolakis  -  field-0    1100 Nov   19th, 1998   J. Apostolakis  -  field-00-04-01head ===> R+D version only
2245                                                  1101 
2246  G4PropagatorInField files modified:             1102  G4PropagatorInField files modified:
2247                                                  1103 
2248    - to store the last safety computed and it    1104    - to store the last safety computed and its origin.
2249    - to give them to a requester                 1105    - to give them to a requester
2250 ---------------------------------------------    1106 ------------------------------------------------------------------
2251                                                  1107 
2252 Nov   19th, 1998   J. Apostolakis  -  field-0    1108 Nov   19th, 1998   J. Apostolakis  -  field-00-03-03b
2253                                                  1109 
2254  Subtle fix to interface of G4UniformMagField << 1110  Subtle fix to interface of G4UniformMagField::GetFieldValue  
2255          ( that tripped Visual C++ )             1111          ( that tripped Visual C++ )
2256                                                  1112 
2257  G4PropagatorInField:  added printing method     1113  G4PropagatorInField:  added printing method for verboseness.
2258                                                  1114 
2259 Nov   19th, 1998   J. Apostolakis  -  field-0    1115 Nov   19th, 1998   J. Apostolakis  -  field-00-03-03a
2260                                                  1116 
2261    Steppers:  Fixed instance variables constr    1117    Steppers:  Fixed instance variables construction (SimpleRunge)
2262               and clash of names in CashKarp:    1118               and clash of names in CashKarp::StepWithEstimate
2263                                                  1119 
2264    Added post-const to all Field classes for     1120    Added post-const to all Field classes for
2265            void GetFieldValue(const G4double     1121            void GetFieldValue(const G4double yTrack[] ,
2266                                  G4double B[]    1122                                  G4double B[]      ) const ;
2267                                                  1123 
2268    Added SetFieldValue methods to UniformMagF    1124    Added SetFieldValue methods to UniformMagField
2269                                                  1125 
2270    Added GetConstantFieldValue() methods to U    1126    Added GetConstantFieldValue() methods to Uniform Mag & Electric Fields
2271                                                  1127 
2272                                                  1128 
2273 Nov   19th, 1998   J. Apostolakis  -  field-0    1129 Nov   19th, 1998   J. Apostolakis  -  field-00-03-03
2274                                                  1130 
2275    Fixes to Propagate and Steppers               1131    Fixes to Propagate and Steppers
2276                                                  1132 
2277 Nov   19th, 1998   J. Apostolakis  -  field-0    1133 Nov   19th, 1998   J. Apostolakis  -  field-00-03-02
2278                                                  1134 
2279    Minor corrections  (???)                      1135    Minor corrections  (???)
2280                                                  1136 
2281 Nov   19th, 1998   J. Apostolakis  -  field-0    1137 Nov   19th, 1998   J. Apostolakis  -  field-00-03-02
2282                                               << 1138  
2283    Major development to allow Electric Field     1139    Major development to allow Electric Field
2284                                               << 1140    
2285                                                  1141 
2286                                                  1142 
2287 June  17th, 1998   J. Apostolakis  -  magfiel    1143 June  17th, 1998   J. Apostolakis  -  magfield-06-03
2288                                                  1144 
2289  Modified Files:                                 1145  Modified Files:
2290         include/G4PropagatorInField.hh           1146         include/G4PropagatorInField.hh
2291             src/G4PropagatorInField.cc           1147             src/G4PropagatorInField.cc
2292            test/testPropagateInField.cc          1148            test/testPropagateInField.cc
2293 ---------------------------------------------    1149 ----------------------------------------------------------------------
2294                                                  1150 
2295  1)  Added an assertion after each call to Lo << 1151  1)  Added an assertion after each call to LocateGlobalPointAndSetup. 
2296      It checks that the located volume is equ    1152      It checks that the located volume is equal to the current volume.
2297      If this check fails, the Propagator does    1153      If this check fails, the Propagator does not know how to continue.
2298                                                  1154 
2299  2)  Added an argument  to ComputeStep method    1155  2)  Added an argument  to ComputeStep method of G4PropagatorInField.
2300   The new volume argument is used to check th    1156   The new volume argument is used to check the current volume during the step.
2301                                                  1157 
2302  3)  When G4Navigator's ComputeStep returned     1158  3)  When G4Navigator's ComputeStep returned  stepLength==stepRequested,  this
2303 used to be treated as a failure to intersect.    1159 used to be treated as a failure to intersect.  This is incorrect.
2304                                                  1160 
2305     stepLength==stepRequested is an intersect    1161     stepLength==stepRequested is an intersection,
2306       so I am now treating it as such in each    1162       so I am now treating it as such in each comparison (of 3).
2307       Ignoring it causes problems, including     1163       Ignoring it causes problems, including volume being skipped.
2308       --> but treating it as an intersection     1164       --> but treating it as an intersection used to cause problems too ??
2309                                                  1165 
2310                                                  1166 
2311 May    7th, 1998    J. Apostolakis  -  magfie    1167 May    7th, 1998    J. Apostolakis  -  magfield-06-02-helix01
2312                                                  1168 
2313 - Tag includes new version of G4ChordFinder (    1169 - Tag includes new version of G4ChordFinder (not used by W.Wander).
2314                                                  1170 
2315                                                  1171 
2316 May    7th, 1998    W. Wander     (recorded/c    1172 May    7th, 1998    W. Wander     (recorded/commited by  J. Apostolakis)
2317                                                  1173 
2318 - New "helical" RK steppers that move in heli    1174 - New "helical" RK steppers that move in helical segments, not linear.
2319     * Several changes to add steppers         << 1175     * Several changes to add steppers 
2320                                                  1176 
2321  Modified Files:                                 1177  Modified Files:
2322         G4MagErrorStepper.hh                  << 1178         G4MagErrorStepper.hh 
2323         G4MagErrorStepper.cc                  << 1179         G4MagErrorStepper.cc 
2324            added Helical stepping methods to     1180            added Helical stepping methods to this general ABC.
2325                                               << 1181         
2326         G4MagIntegratorStepper.hh                1182         G4MagIntegratorStepper.hh
2327            made RightHandSide virtual   (this    1183            made RightHandSide virtual   (this will be reversed very soon)
2328                                                  1184 
2329         testPropagateMagField.cc                 1185         testPropagateMagField.cc
2330            Test of Helical stepping functiona    1186            Test of Helical stepping functionality added.
2331                                               << 1187            
2332  Added Files for new Helical RK steppers, der    1188  Added Files for new Helical RK steppers, deriving from G4MagErrorStepper:
2333         G4HelixExplicitEuler.cc  ( and .hh )     1189         G4HelixExplicitEuler.cc  ( and .hh )
2334         G4HelixHeum.cc                           1190         G4HelixHeum.cc
2335         G4HelixImplicitEuler.cc                  1191         G4HelixImplicitEuler.cc
2336         G4HelixSimpleRunge.cc                 << 1192         G4HelixSimpleRunge.cc  
2337                                                  1193 
2338  Added File for implementation:                  1194  Added File for implementation:
2339         G4MagErrorStepper.icc                    1195         G4MagErrorStepper.icc
2340                                                  1196 
2341                                                  1197 
2342 May    7th, 1998    J. Apostolakis   -  magfi    1198 May    7th, 1998    J. Apostolakis   -  magfield-06-01
2343                                                  1199 
2344 - added small changes to                      << 1200 - added small changes to 
2345     * G4ChordFinder:           methods to get    1201     * G4ChordFinder:           methods to get/set IntegratorDriver
2346     * G4MagIntegratorDriver:   made OneGoodSt    1202     * G4MagIntegratorDriver:   made OneGoodStep method public
2347 - created the file.                              1203 - created the file.
                                                   >> 1204