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26 // 26 //
>> 27 // $Id: G4Transportation.cc,v 1.60.4.2 2007/02/15 19:02:57 japost Exp $
>> 28 // GEANT4 tag $Name: geant4-08-03-patch-01 $
27 // 29 //
28 // ------------------------------------------- 30 // ------------------------------------------------------------
29 // GEANT 4 include file implementation 31 // GEANT 4 include file implementation
30 // 32 //
31 // ------------------------------------------- 33 // ------------------------------------------------------------
32 // 34 //
33 // This class is a process responsible for the 35 // This class is a process responsible for the transportation of
34 // a particle, ie the geometrical propagation 36 // a particle, ie the geometrical propagation that encounters the
35 // geometrical sub-volumes of the detectors. 37 // geometrical sub-volumes of the detectors.
36 // 38 //
37 // It is also tasked with the key role of prop << 39 // It is also tasked with part of updating the "safety".
38 // which will be used to update the post-ste <<
39 // 40 //
40 // =========================================== 41 // =======================================================================
>> 42 // Modified:
>> 43 // 19 Jan 2006, P.MoraDeFreitas: Fix for suspended tracks (StartTracking)
>> 44 // 11 Aug 2004, M.Asai: Add G4VSensitiveDetector* for updating stepPoint.
>> 45 // 21 June 2003, J.Apostolakis: Calling field manager with
>> 46 // track, to enable it to configure its accuracy
>> 47 // 13 May 2003, J.Apostolakis: Zero field areas now taken into
>> 48 // account correclty in all cases (thanks to W Pokorski).
>> 49 // 29 June 2001, J.Apostolakis, D.Cote-Ahern, P.Gumplinger:
>> 50 // correction for spin tracking
>> 51 // 20 Febr 2001, J.Apostolakis: update for new FieldTrack
>> 52 // 22 Sept 2000, V.Grichine: update of Kinetic Energy
>> 53 // 9 June 1999, J.Apostolakis & S.Giani: protect full relocation
>> 54 // in DEBUG for track starting on surface that
>> 55 // goes step < tolerance.
41 // Created: 19 March 1997, J. Apostolakis 56 // Created: 19 March 1997, J. Apostolakis
42 // =========================================== 57 // =======================================================================
43 58
44 #include "G4Transportation.hh" 59 #include "G4Transportation.hh"
45 #include "G4TransportationProcessType.hh" <<
46 #include "G4TransportationLogger.hh" <<
47 <<
48 #include "G4PhysicalConstants.hh" <<
49 #include "G4SystemOfUnits.hh" <<
50 #include "G4ProductionCutsTable.hh" 60 #include "G4ProductionCutsTable.hh"
51 #include "G4ParticleTable.hh" 61 #include "G4ParticleTable.hh"
52 << 62 #include "G4ChordFinder.hh"
53 #include "G4ChargeState.hh" <<
54 #include "G4EquationOfMotion.hh" <<
55 <<
56 #include "G4FieldManagerStore.hh" <<
57 <<
58 #include "G4Navigator.hh" <<
59 #include "G4PropagatorInField.hh" <<
60 #include "G4TransportationManager.hh" <<
61 <<
62 #include "G4TransportationParameters.hh" <<
63 <<
64 class G4VSensitiveDetector; 63 class G4VSensitiveDetector;
65 64
66 G4bool G4Transportation::fUseMagneticMoment=fa <<
67 G4bool G4Transportation::fUseGravity= false; <<
68 G4bool G4Transportation::fSilenceLooperWarning <<
69 <<
70 ////////////////////////////////////////////// 65 //////////////////////////////////////////////////////////////////////////
71 // 66 //
72 // Constructor 67 // Constructor
73 68
74 G4Transportation::G4Transportation( G4int verb << 69 G4Transportation::G4Transportation( G4int verboseLevel )
75 : G4VProcess( aName, fTransportation ), << 70 : G4VProcess( G4String("Transportation"), fTransportation ),
76 fFieldExertedForce( false ), << 71 fParticleIsLooping( false ),
77 fPreviousSftOrigin( 0.,0.,0. ), << 72 fPreviousSftOrigin (0.,0.,0.),
78 fPreviousSafety( 0.0 ), << 73 fPreviousSafety ( 0.0 ),
79 fEndPointDistance( -1.0 ), << 74 fThreshold_Warning_Energy( 100 * MeV ),
80 fShortStepOptimisation( false ) // Old def << 75 fThreshold_Important_Energy( 250 * MeV ),
>> 76 fThresholdTrials( 10 ),
>> 77 fUnimportant_Energy( 1 * MeV ),
>> 78 fNoLooperTrials(0),
>> 79 fSumEnergyKilled( 0.0 ), fMaxEnergyKilled( 0.0 ),
>> 80 fVerboseLevel( verboseLevel )
81 { 81 {
82 SetProcessSubType(static_cast<G4int>(TRANSPO <<
83 pParticleChange= &fParticleChange; // Requ <<
84 SetVerboseLevel(verbosity); <<
85 <<
86 G4TransportationManager* transportMgr ; 82 G4TransportationManager* transportMgr ;
87 83
88 transportMgr = G4TransportationManager::GetT 84 transportMgr = G4TransportationManager::GetTransportationManager() ;
89 85
90 fLinearNavigator = transportMgr->GetNavigato 86 fLinearNavigator = transportMgr->GetNavigatorForTracking() ;
91 87
92 fFieldPropagator = transportMgr->GetPropagat << 88 // fGlobalFieldMgr = transportMgr->GetFieldManager() ;
93 89
94 fpSafetyHelper = transportMgr->GetSafetyHe << 90 fFieldPropagator = transportMgr->GetPropagatorInField() ;
95 <<
96 fpLogger = new G4TransportationLogger("G4Tra <<
97 <<
98 if( G4TransportationParameters::Exists() ) <<
99 { <<
100 auto trParams= G4TransportationParameters: <<
101 <<
102 SetThresholdWarningEnergy( trParams->GetW <<
103 SetThresholdImportantEnergy( trParams->Get <<
104 SetThresholdTrials( trParams->GetNumberOfT <<
105 G4Transportation::fSilenceLooperWarnings= <<
106 } <<
107 else { <<
108 SetHighLooperThresholds(); <<
109 // Use the old defaults: Warning = 100 Me <<
110 } <<
111 91
112 PushThresholdsToLogger(); << 92 // Cannot determine whether a field exists here,
113 // Should be done by Set methods in SetHighL << 93 // because it would only work if the field manager has informed
114 << 94 // about the detector's field before this transportation process
115 static G4ThreadLocal G4TouchableHandle* pNul << 95 // is constructed.
116 if ( !pNullTouchableHandle) << 96 // Instead later the method DoesGlobalFieldExist() is called
117 { << 97
118 pNullTouchableHandle = new G4TouchableHand << 98 // Small memory leak from this new
119 } << 99 // fCurrentTouchableHandle = new G4TouchableHistory();
120 fCurrentTouchableHandle = *pNullTouchableHan << 100 // Fixes:
121 // Points to (G4VTouchable*) 0 << 101 // 1) static G4TouchableHistory sfNullTouchableHistory = new G4TouchableHistory();
>> 102 // fCurrentTouchableHandle = new G4TouchableHandle( sfNullTouchableHistory );
>> 103 // 2) set it to (G4TouchableHistory*) 0
>> 104 // fCurrentTouchableHandle = new G4TouchableHandle( (G4TouchableHistory*) 0 );
>> 105 // 3) Below:
>> 106 static G4TouchableHandle nullTouchableHandle; // Points to (G4VTouchable*) 0
>> 107 fCurrentTouchableHandle = nullTouchableHandle;
122 108
123 << 109 fEndGlobalTimeComputed = false;
124 #ifdef G4VERBOSE << 110 fCandidateEndGlobalTime = 0;
125 if( verboseLevel > 0) <<
126 { <<
127 G4cout << " G4Transportation constructor> <<
128 if ( fShortStepOptimisation ) { G4cout < <<
129 else { G4cout < <<
130 } <<
131 #endif <<
132 } 111 }
133 112
134 ////////////////////////////////////////////// 113 //////////////////////////////////////////////////////////////////////////
135 114
136 G4Transportation::~G4Transportation() 115 G4Transportation::~G4Transportation()
137 { 116 {
138 if( fSumEnergyKilled > 0.0 ) <<
139 { <<
140 PrintStatistics( G4cout ); <<
141 } <<
142 delete fpLogger; <<
143 } <<
144 117
145 ////////////////////////////////////////////// << 118 // --- Alternative code to delete 'junk data' in touchable handle
146 << 119 // ** Corresponds to the case that the constructor has
147 void << 120 // fCurrentTouchableHandle = new G4TouchableHistory();
148 G4Transportation::PrintStatistics( std::ostrea << 121 // ** Likely incorrect - as at the end of the simulation
149 { << 122 // the handle no longer holds the original 'null' history
150 outStr << " G4Transportation: Statistics fo << 123 // G4VTouchable* pTouchable= fCurrentTouchableHandle(); // Incorrect
151 if( fSumEnergyKilled > 0.0 || fNumLoopersKi << 124 // delete pTouchable; // Incorrect
152 { << 125
153 outStr << " Sum of energy of looping t << 126 if( (fVerboseLevel > 0) && (fSumEnergyKilled > 0.0 ) ){
154 << fSumEnergyKilled / CLHEP::MeV << 127 G4cout << " G4Transportation: Statistics for looping particles " << G4endl;
155 << " from " << fNumLoopersKilled << 128 G4cout << " Sum of energy of loopers killed: " << fSumEnergyKilled << G4endl;
156 << " Sum of energy of non-elect << 129 G4cout << " Max energy of loopers killed: " << fMaxEnergyKilled << G4endl;
157 << fSumEnergyKilled_NonElectron / << 130 }
158 << " from " << fNumLoopersKilled <<
159 << G4endl; <<
160 outStr << " Max energy of *any type* <<
161 << " its PDG was " << fMaxEner <<
162 if( fMaxEnergyKilled_NonElectron > 0.0 ) <<
163 { <<
164 outStr << " Max energy of non-elect <<
165 << fMaxEnergyKilled_NonElectro <<
166 << " its PDG was " << fMaxE <<
167 } <<
168 if( fMaxEnergySaved > 0.0 ) <<
169 { <<
170 outStr << " Max energy of loopers ' <<
171 outStr << " Sum of energy of looper <<
172 << fSumEnergySaved << G4endl; <<
173 outStr << " Sum of energy of unstab <<
174 << fSumEnergyUnstableSaved << <<
175 } <<
176 } <<
177 else <<
178 { <<
179 outStr << " No looping tracks found or k <<
180 } <<
181 } 131 }
182 132
183 ////////////////////////////////////////////// 133 //////////////////////////////////////////////////////////////////////////
184 // 134 //
185 // Responsibilities: 135 // Responsibilities:
186 // Find whether the geometry limits the Ste 136 // Find whether the geometry limits the Step, and to what length
187 // Calculate the new value of the safety an 137 // Calculate the new value of the safety and return it.
188 // Store the final time, position and momen 138 // Store the final time, position and momentum.
189 139
190 G4double G4Transportation::AlongStepGetPhysica << 140 G4double G4Transportation::
191 const G4Track& track, << 141 AlongStepGetPhysicalInteractionLength( const G4Track& track,
192 G4double, // previousStepSize << 142 G4double, // previousStepSize
193 G4double currentMinimumStep, G4double& curre << 143 G4double currentMinimumStep,
194 G4GPILSelection* selection) << 144 G4double& currentSafety,
>> 145 G4GPILSelection* selection )
195 { 146 {
196 // Initial actions moved to StartTrack() << 147 G4double geometryStepLength, newSafety ;
>> 148 fParticleIsLooping = false ;
>> 149
>> 150 // Initial actions moved to StartTrack()
197 // -------------------------------------- 151 // --------------------------------------
198 // Note: in case another process changes tou 152 // Note: in case another process changes touchable handle
199 // it will be necessary to add here (for << 153 // it will be necessary to add here (for all steps)
200 // fCurrentTouchableHandle = aTrack->GetTouc 154 // fCurrentTouchableHandle = aTrack->GetTouchableHandle();
201 155
202 // GPILSelection is set to defaule value of 156 // GPILSelection is set to defaule value of CandidateForSelection
203 // It is a return value 157 // It is a return value
204 // 158 //
205 *selection = CandidateForSelection; << 159 *selection = CandidateForSelection ;
206 160
207 // Get initial Energy/Momentum of the track 161 // Get initial Energy/Momentum of the track
208 // 162 //
209 const G4ThreeVector startPosition = track << 163 const G4DynamicParticle* pParticle = track.GetDynamicParticle() ;
210 const G4ThreeVector startMomentumDir = track << 164 const G4ParticleDefinition* pParticleDef = pParticle->GetDefinition() ;
>> 165 G4ThreeVector startMomentumDir = pParticle->GetMomentumDirection() ;
>> 166 G4ThreeVector startPosition = track.GetPosition() ;
>> 167
>> 168 // G4double theTime = track.GetGlobalTime() ;
211 169
212 // The Step Point safety can be limited by o << 170 // The Step Point safety can be limited by other geometries and/or the
213 // assumptions of any process - it's not alw 171 // assumptions of any process - it's not always the geometrical safety.
214 // We calculate the starting point's isotrop 172 // We calculate the starting point's isotropic safety here.
>> 173 //
>> 174 G4ThreeVector OriginShift = startPosition - fPreviousSftOrigin ;
>> 175 G4double MagSqShift = OriginShift.mag2() ;
>> 176 if( MagSqShift >= sqr(fPreviousSafety) )
215 { 177 {
216 const G4double MagSqShift = (startPosition << 178 currentSafety = 0.0 ;
217 << 179 }
218 if(MagSqShift >= sqr(fPreviousSafety)) << 180 else
219 currentSafety = 0.0; << 181 {
220 else << 182 currentSafety = fPreviousSafety - std::sqrt(MagSqShift) ;
221 currentSafety = fPreviousSafety - std::s <<
222 } 183 }
223 184
224 // Is the particle charged or has it a magne << 185 // Is the particle charged ?
225 // 186 //
226 const G4DynamicParticle* pParticle = track.G << 187 G4double particleCharge = pParticle->GetCharge() ;
227 188
228 const G4double particleMass = pParticle->G << 189 fGeometryLimitedStep = false ;
229 const G4double particleCharge = pParticle->G << 190 // fEndGlobalTimeComputed = false ;
230 const G4double kineticEnergy = pParticle->Ge <<
231 <<
232 const G4double magneticMoment = pParticle <<
233 const G4ThreeVector particleSpin = pParticle <<
234 191
235 // There is no need to locate the current vo 192 // There is no need to locate the current volume. It is Done elsewhere:
236 // On track construction << 193 // On track construction
237 // By the tracking, after all AlongStepDoI 194 // By the tracking, after all AlongStepDoIts, in "Relocation"
238 195
239 // Check if the particle has a force, EM or << 196 // Check whether the particle have an (EM) field force exerting upon it
240 // 197 //
>> 198 G4FieldManager* fieldMgr=0;
>> 199 G4bool fieldExertsForce = false ;
>> 200 if( (particleCharge != 0.0) )
>> 201 {
>> 202 fieldMgr= fFieldPropagator->FindAndSetFieldManager( track.GetVolume() );
>> 203 if (fieldMgr != 0) {
>> 204 // If the field manager has no field, there is no field !
>> 205 fieldExertsForce = (fieldMgr->GetDetectorField() != 0);
>> 206 }
>> 207 }
>> 208
>> 209 // G4cout << " G4Transport: field exerts force= " << fieldExertsForce
>> 210 // << " fieldMgr= " << fieldMgr << G4endl;
>> 211
>> 212 // Choose the calculation of the transportation: Field or not
>> 213 //
>> 214 if( !fieldExertsForce )
>> 215 {
>> 216 G4double linearStepLength ;
>> 217 if( currentMinimumStep <= currentSafety )
>> 218 {
>> 219 // The Step is guaranteed to be taken
>> 220 //
>> 221 geometryStepLength = currentMinimumStep ;
>> 222 fGeometryLimitedStep = false ;
>> 223 }
>> 224 else
>> 225 {
>> 226 // Find whether the straight path intersects a volume
>> 227 //
>> 228 linearStepLength = fLinearNavigator->ComputeStep( startPosition,
>> 229 startMomentumDir,
>> 230 currentMinimumStep,
>> 231 newSafety) ;
>> 232 // Remember last safety origin & value.
>> 233 //
>> 234 fPreviousSftOrigin = startPosition ;
>> 235 fPreviousSafety = newSafety ;
>> 236
>> 237 // The safety at the initial point has been re-calculated:
>> 238 //
>> 239 currentSafety = newSafety ;
>> 240
>> 241 if( linearStepLength <= currentMinimumStep)
>> 242 {
>> 243 // The geometry limits the Step size (an intersection was found.)
>> 244 //
>> 245 geometryStepLength = linearStepLength ;
>> 246 fGeometryLimitedStep = true ;
>> 247 }
>> 248 else
>> 249 {
>> 250 // The full Step is taken.
>> 251 //
>> 252 geometryStepLength = currentMinimumStep ;
>> 253 fGeometryLimitedStep = false ;
>> 254 }
>> 255 }
>> 256 endpointDistance = geometryStepLength ;
241 257
242 G4bool eligibleEM = << 258 // Calculate final position
243 (particleCharge != 0.0) || ((magneticMomen << 259 //
244 G4bool eligibleGrav = (particleMass != 0.0) << 260 fTransportEndPosition = startPosition+geometryStepLength*startMomentumDir ;
245 <<
246 fFieldExertedForce = false; <<
247 <<
248 if(eligibleEM || eligibleGrav) <<
249 { <<
250 if(G4FieldManager* fieldMgr = <<
251 fFieldPropagator->FindAndSetFieldMana <<
252 { <<
253 // User can configure the field Manager <<
254 fieldMgr->ConfigureForTrack(&track); <<
255 // Called here to allow a transition fro <<
256 // to finite field (non-zero pointer). <<
257 <<
258 // If the field manager has no field ptr <<
259 // by definition ( = there is no field <<
260 if(const G4Field* ptrField = fieldMgr->G <<
261 fFieldExertedForce = <<
262 eligibleEM || (eligibleGrav && ptrFi <<
263 } <<
264 } <<
265 <<
266 G4double geometryStepLength = currentMinimum <<
267 <<
268 if(currentMinimumStep == 0.0) <<
269 { <<
270 fEndPointDistance = 0.0; <<
271 fGeometryLimitedStep = false; // Old cod <<
272 // Changed to avoid problems when setting <<
273 fMomentumChanged = false; <<
274 fParticleIsLooping = false; <<
275 fEndGlobalTimeComputed = false; <<
276 fTransportEndPosition = startPosition <<
277 fTransportEndMomentumDir = startMomentum <<
278 fTransportEndKineticEnergy = kineticEnergy <<
279 fTransportEndSpin = particleSpin; <<
280 } <<
281 else if(!fFieldExertedForce) <<
282 { <<
283 fGeometryLimitedStep = false; <<
284 if(geometryStepLength > currentSafety || ! <<
285 { <<
286 const G4double linearStepLength = fLinea <<
287 startPosition, startMomentumDir, curre <<
288 <<
289 if(linearStepLength <= currentMinimumSte <<
290 { <<
291 geometryStepLength = linearStepLength; <<
292 fGeometryLimitedStep = true; <<
293 } <<
294 // Remember last safety origin & value. <<
295 // <<
296 fPreviousSftOrigin = startPosition; <<
297 fPreviousSafety = currentSafety; <<
298 fpSafetyHelper->SetCurrentSafety(current <<
299 } <<
300 <<
301 fEndPointDistance = geometryStepLength; <<
302 <<
303 fMomentumChanged = false; <<
304 fParticleIsLooping = false; <<
305 fEndGlobalTimeComputed = false; <<
306 fTransportEndPosition = <<
307 startPosition + geometryStepLength * sta <<
308 fTransportEndMomentumDir = startMomentum <<
309 fTransportEndKineticEnergy = kineticEnergy <<
310 fTransportEndSpin = particleSpin; <<
311 } <<
312 else // A field exerts force <<
313 { <<
314 const auto pParticleDef = pParticle->Ge <<
315 const auto particlePDGSpin = pParticleDef- <<
316 const auto particlePDGMagM = pParticleDef- <<
317 <<
318 auto equationOfMotion = fFieldPropagator-> <<
319 <<
320 // The charge can change (dynamic), theref <<
321 // <<
322 equationOfMotion->SetChargeMomentumMass( <<
323 G4ChargeState(particleCharge, magneticMo <<
324 pParticle->GetTotalMomentum(), particleM <<
325 <<
326 G4FieldTrack aFieldTrack(startPosition, <<
327 track.GetGlobalTi <<
328 startMomentumDir, <<
329 particleCharge, p <<
330 0.0, // Length a <<
331 particlePDGSpin); <<
332 <<
333 // Do the Transport in the field (non rect <<
334 // <<
335 const G4double lengthAlongCurve = fFieldPr <<
336 aFieldTrack, currentMinimumStep, current <<
337 kineticEnergy < fThreshold_Important_Ene <<
338 <<
339 if(lengthAlongCurve < geometryStepLength) <<
340 geometryStepLength = lengthAlongCurve; <<
341 <<
342 // Remember last safety origin & value. <<
343 // <<
344 fPreviousSftOrigin = startPosition; <<
345 fPreviousSafety = currentSafety; <<
346 fpSafetyHelper->SetCurrentSafety(currentSa <<
347 261
348 fGeometryLimitedStep = fFieldPropagator->I << 262 // Momentum direction, energy and polarisation are unchanged by transport
349 // << 263 //
350 // It is possible that step was reduced in << 264 fTransportEndMomentumDir = startMomentumDir ;
351 // previous zero steps. To cope with case << 265 fTransportEndKineticEnergy = track.GetKineticEnergy() ;
352 // in full, we must rely on PiF to obtain << 266 fTransportEndSpin = track.GetPolarization();
>> 267 fParticleIsLooping = false ;
>> 268 fMomentumChanged = false ;
>> 269 fEndGlobalTimeComputed = false ;
>> 270 }
>> 271 else // A field exerts force
>> 272 {
>> 273 G4double momentumMagnitude = pParticle->GetTotalMomentum() ;
>> 274 G4ThreeVector EndUnitMomentum ;
>> 275 G4double lengthAlongCurve ;
>> 276 G4double restMass = pParticleDef->GetPDGMass() ;
>> 277
>> 278 fFieldPropagator->SetChargeMomentumMass( particleCharge, // in e+ units
>> 279 momentumMagnitude, // in Mev/c
>> 280 restMass ) ;
353 281
354 G4bool changesEnergy = << 282 // Message the field Manager, to configure it for this track
355 fFieldPropagator->GetCurrentFieldManager << 283 fieldMgr->ConfigureForTrack( &track );
356 284
357 fMomentumChanged = true; << 285 G4ThreeVector spin = track.GetPolarization() ;
358 fParticleIsLooping = fFieldPropagator->IsP << 286 G4FieldTrack aFieldTrack = G4FieldTrack( startPosition,
>> 287 track.GetMomentumDirection(),
>> 288 0.0,
>> 289 track.GetKineticEnergy(),
>> 290 restMass,
>> 291 track.GetVelocity(),
>> 292 track.GetGlobalTime(), // Lab.
>> 293 track.GetProperTime(), // Part.
>> 294 &spin ) ;
>> 295 if( currentMinimumStep > 0 )
>> 296 {
>> 297 // Do the Transport in the field (non recti-linear)
>> 298 //
>> 299 lengthAlongCurve = fFieldPropagator->ComputeStep( aFieldTrack,
>> 300 currentMinimumStep,
>> 301 currentSafety,
>> 302 track.GetVolume() ) ;
>> 303 if( lengthAlongCurve < currentMinimumStep)
>> 304 {
>> 305 geometryStepLength = lengthAlongCurve ;
>> 306 fGeometryLimitedStep = true ;
>> 307 }
>> 308 else
>> 309 {
>> 310 geometryStepLength = currentMinimumStep ;
>> 311 fGeometryLimitedStep = false ;
>> 312 }
>> 313 }
>> 314 else
>> 315 {
>> 316 geometryStepLength = lengthAlongCurve= 0.0 ;
>> 317 fGeometryLimitedStep = false ;
>> 318 }
359 319
360 fEndGlobalTimeComputed = changesEnergy; << 320 // Remember last safety origin & value.
361 fTransportEndPosition = aFieldTrack.Get << 321 //
362 fTransportEndMomentumDir = aFieldTrack.Get << 322 fPreviousSftOrigin = startPosition ;
>> 323 fPreviousSafety = currentSafety ;
>> 324
>> 325 // Get the End-Position and End-Momentum (Dir-ection)
>> 326 //
>> 327 fTransportEndPosition = aFieldTrack.GetPosition() ;
363 328
364 // G4cout << " G4Transport: End of step pM << 329 // Momentum: Magnitude and direction can be changed too now ...
>> 330 //
>> 331 fMomentumChanged = true ;
>> 332 fTransportEndMomentumDir = aFieldTrack.GetMomentumDir() ;
365 333
366 fEndPointDistance = (fTransportEndPositio << 334 fTransportEndKineticEnergy = aFieldTrack.GetKineticEnergy() ;
367 335
368 // Ignore change in energy for fields that << 336 if( fFieldPropagator->GetCurrentFieldManager()->DoesFieldChangeEnergy() )
369 // This hides the integration error, but g << 337 {
370 fTransportEndKineticEnergy = << 338 // If the field can change energy, then the time must be integrated
371 changesEnergy ? aFieldTrack.GetKineticEn << 339 // - so this should have been updated
372 fTransportEndSpin = aFieldTrack.GetSpin(); << 340 //
>> 341 fCandidateEndGlobalTime = aFieldTrack.GetLabTimeOfFlight();
>> 342 fEndGlobalTimeComputed = true;
373 343
374 if(fEndGlobalTimeComputed) << 344 // was ( fCandidateEndGlobalTime != track.GetGlobalTime() );
375 { << 345 // a cleaner way is to have FieldTrack knowing whether time is updated.
376 // If the field can change energy, then << 346 }
377 // - so this should have been updated << 347 else
378 // << 348 {
379 fCandidateEndGlobalTime = aFieldTrack.Ge << 349 // The energy should be unchanged by field transport,
>> 350 // - so the time changed will be calculated elsewhere
>> 351 //
>> 352 fEndGlobalTimeComputed = false;
380 353
381 // was ( fCandidateEndGlobalTime != trac << 354 // Check that the integration preserved the energy
382 // a cleaner way is to have FieldTrack k << 355 // - and if not correct this!
383 } << 356 G4double startEnergy= track.GetKineticEnergy();
384 #if defined(G4VERBOSE) || defined(G4DEBUG_TRAN << 357 G4double endEnergy= fTransportEndKineticEnergy;
385 else << 358
386 { << 359 static G4int no_inexact_steps=0, no_large_ediff;
387 // The energy should be unchanged by fie << 360 G4double absEdiff = std::fabs(startEnergy- endEnergy);
388 // - so the time changed will be calc << 361 if( absEdiff > perMillion * endEnergy )
389 // << 362 {
390 // Check that the integration preserved << 363 no_inexact_steps++;
391 // - and if not correct this! << 364 // Possible statistics keeping here ...
392 G4double startEnergy = kineticEnergy; << 365 }
393 G4double endEnergy = fTransportEndKine << 366 if( fVerboseLevel > 1 )
394 <<
395 static G4ThreadLocal G4int no_large_edif <<
396 if(verboseLevel > 1) <<
397 { <<
398 if(std::fabs(startEnergy - endEnergy) <<
399 { 367 {
400 static G4ThreadLocal G4int no_warnin << 368 if( std::fabs(startEnergy- endEnergy) > perThousand * endEnergy )
401 moduloFac <<
402 no_large_ediff++; <<
403 if((no_large_ediff % warnModulo) == <<
404 { 369 {
405 no_warnings++; << 370 static G4int no_warnings= 0, warnModulo=1, moduloFactor= 10;
406 std::ostringstream message; << 371 no_large_ediff ++;
407 message << "Energy change in Step << 372 if( (no_large_ediff% warnModulo) == 0 )
408 << G4endl << " Relativ <<
409 << std::setw(15) << (endEn <<
410 << G4endl << " Startin <<
411 << startEnergy / MeV << " <<
412 << " Ending E= " << <<
413 << " MeV " << G4endl <<
414 << "Energy has been correc <<
415 << " field propagation par <<
416 if((verboseLevel > 2) || (no_warni <<
417 (no_large_ediff == warnModulo * <<
418 { <<
419 message << "These include Epsilo <<
420 << G4endl <<
421 << "which determine frac <<
422 "integrated quantitie <<
423 << G4endl <<
424 << "Note also the influe <<
425 "integration steps." <<
426 << G4endl; <<
427 } <<
428 message << "Bad 'endpoint'. Energy <<
429 << G4endl << "Has occurred <<
430 << " times."; <<
431 G4Exception("G4Transportation::Alo <<
432 JustWarning, message); <<
433 if(no_large_ediff == warnModulo * <<
434 { 373 {
435 warnModulo *= moduloFactor; << 374 no_warnings++;
>> 375 G4cout << "WARNING - G4Transportation::AlongStepGetPIL() "
>> 376 << " Energy change in Step is above 1^-3 relative value. " << G4endl
>> 377 << " Relative change in 'tracking' step = "
>> 378 << std::setw(15) << (endEnergy-startEnergy)/startEnergy << G4endl
>> 379 << " Starting E= " << std::setw(12) << startEnergy / MeV << " MeV " << G4endl
>> 380 << " Ending E= " << std::setw(12) << endEnergy / MeV << " MeV " << G4endl;
>> 381 G4cout << " Energy has been corrected -- however, review"
>> 382 << " field propagation parameters for accuracy." << G4endl;
>> 383 if( (fVerboseLevel > 2 ) || (no_warnings<4) || (no_large_ediff == warnModulo * moduloFactor) ){
>> 384 G4cout << " These include EpsilonStepMax(/Min) in G4FieldManager "
>> 385 << " which determine fractional error per step for integrated quantities. " << G4endl
>> 386 << " Note also the influence of the permitted number of integration steps."
>> 387 << G4endl;
>> 388 }
>> 389 G4cerr << "ERROR - G4Transportation::AlongStepGetPIL()" << G4endl
>> 390 << " Bad 'endpoint'. Energy change detected"
>> 391 << " and corrected. "
>> 392 << " Has occurred already "
>> 393 << no_large_ediff << " times." << G4endl;
>> 394 if( no_large_ediff == warnModulo * moduloFactor )
>> 395 {
>> 396 warnModulo *= moduloFactor;
>> 397 }
436 } 398 }
437 } 399 }
438 } << 400 } // end of if (fVerboseLevel)
439 } // end of if (verboseLevel) << 401
440 } << 402 // Correct the energy for fields that conserve it
441 #endif << 403 // This - hides the integration error
>> 404 // - but gives a better physical answer
>> 405 fTransportEndKineticEnergy= track.GetKineticEnergy();
>> 406 }
>> 407
>> 408 fTransportEndSpin = aFieldTrack.GetSpin();
>> 409 fParticleIsLooping = fFieldPropagator->IsParticleLooping() ;
>> 410 endpointDistance = (fTransportEndPosition - startPosition).mag() ;
>> 411 }
>> 412
>> 413 // If we are asked to go a step length of 0, and we are on a boundary
>> 414 // then a boundary will also limit the step -> we must flag this.
>> 415 //
>> 416 if( currentMinimumStep == 0.0 )
>> 417 {
>> 418 if( currentSafety == 0.0 ) fGeometryLimitedStep = true ;
442 } 419 }
443 420
444 // Update the safety starting from the end-p 421 // Update the safety starting from the end-point,
445 // if it will become negative at the end-poi 422 // if it will become negative at the end-point.
446 // 423 //
447 if(currentSafety < fEndPointDistance) << 424 if( currentSafety < endpointDistance )
448 { 425 {
449 if(particleCharge != 0.0) <<
450 { <<
451 G4double endSafety = 426 G4double endSafety =
452 fLinearNavigator->ComputeSafety(fTrans << 427 fLinearNavigator->ComputeSafety( fTransportEndPosition) ;
453 currentSafety = endSafety; << 428 currentSafety = endSafety ;
454 fPreviousSftOrigin = fTransportEndPositi << 429 fPreviousSftOrigin = fTransportEndPosition ;
455 fPreviousSafety = currentSafety; << 430 fPreviousSafety = currentSafety ;
456 fpSafetyHelper->SetCurrentSafety(current <<
457 431
458 // Because the Stepping Manager assumes << 432 // Because the Stepping Manager assumes it is from the start point,
459 // add the StepLength 433 // add the StepLength
460 // 434 //
461 currentSafety += fEndPointDistance; << 435 currentSafety += endpointDistance ;
462 436
463 #ifdef G4DEBUG_TRANSPORT << 437 #ifdef G4DEBUG_TRANSPORT
464 G4cout.precision(12); << 438 G4cout.precision(16) ;
465 G4cout << "***G4Transportation::AlongSte << 439 G4cout << "***Transportation::AlongStepGPIL ** " << G4endl ;
466 G4cout << " Called Navigator->ComputeSa << 440 G4cout << " Called Navigator->ComputeSafety at "
467 << " and it returned safety= << 441 << fTransportEndPosition
468 G4cout << " Adding endpoint distance << 442 << " and it returned safety= " << endSafety << G4endl ;
469 << " to obtain pseudo-safety= << 443 G4cout << " Adding endpoint distance " << endpointDistance
470 } << 444 << " we obtain pseudo-safety= " << currentSafety << G4endl ;
471 else <<
472 { <<
473 G4cout << "***G4Transportation::AlongSte <<
474 G4cout << " Avoiding call to ComputeSaf <<
475 G4cout << " charge = " << particl <<
476 G4cout << " mag moment = " << magneti <<
477 #endif 445 #endif
478 } << 446 }
479 } <<
480 447
481 fFirstStepInVolume = fNewTrack || fLastStepI << 448 fParticleChange.ProposeTrueStepLength(geometryStepLength) ;
482 fLastStepInVolume = false; <<
483 fNewTrack = false; <<
484 449
485 fParticleChange.ProposeFirstStepInVolume(fFi << 450 return geometryStepLength ;
486 fParticleChange.ProposeTrueStepLength(geomet <<
487 <<
488 return geometryStepLength; <<
489 } 451 }
490 452
491 ////////////////////////////////////////////// 453 //////////////////////////////////////////////////////////////////////////
492 // 454 //
493 // Initialize ParticleChange (by setting al 455 // Initialize ParticleChange (by setting all its members equal
494 // to correspond 456 // to corresponding members in G4Track)
495 457
496 G4VParticleChange* G4Transportation::AlongStep 458 G4VParticleChange* G4Transportation::AlongStepDoIt( const G4Track& track,
497 459 const G4Step& stepData )
498 { 460 {
499 #if defined(G4VERBOSE) || defined(G4DEBUG_TRAN << 461 static G4int noCalls=0;
500 static G4ThreadLocal G4long noCallsASDI=0; << 462 static const G4ParticleDefinition* fOpticalPhoton =
501 noCallsASDI++; << 463 G4ParticleTable::GetParticleTable()->FindParticle("opticalphoton");
502 #else <<
503 #define noCallsASDI 0 <<
504 #endif <<
505 464
506 if(fGeometryLimitedStep) << 465 noCalls++;
507 { <<
508 stepData.GetPostStepPoint()->SetStepStatus <<
509 } <<
510 466
511 fParticleChange.Initialize(track) ; 467 fParticleChange.Initialize(track) ;
512 468
513 // Code for specific process 469 // Code for specific process
514 // 470 //
515 fParticleChange.ProposePosition(fTransportEn 471 fParticleChange.ProposePosition(fTransportEndPosition) ;
516 fParticleChange.ProposeMomentumDirection(fTr 472 fParticleChange.ProposeMomentumDirection(fTransportEndMomentumDir) ;
517 fParticleChange.ProposeEnergy(fTransportEndK 473 fParticleChange.ProposeEnergy(fTransportEndKineticEnergy) ;
518 fParticleChange.SetMomentumChanged(fMomentum 474 fParticleChange.SetMomentumChanged(fMomentumChanged) ;
519 475
520 fParticleChange.ProposePolarization(fTranspo 476 fParticleChange.ProposePolarization(fTransportEndSpin);
521 << 477
522 G4double deltaTime = 0.0 ; 478 G4double deltaTime = 0.0 ;
523 479
524 // Calculate Lab Time of Flight (ONLY if fi 480 // Calculate Lab Time of Flight (ONLY if field Equations used it!)
525 // G4double endTime = fCandidateEndGlobalT << 481 // G4double endTime = fCandidateEndGlobalTime;
526 // G4double delta_time = endTime - startTime << 482 // G4double delta_time = endTime - startTime;
527 483
528 G4double startTime = track.GetGlobalTime() ; 484 G4double startTime = track.GetGlobalTime() ;
529 485
530 if (!fEndGlobalTimeComputed) 486 if (!fEndGlobalTimeComputed)
531 { 487 {
532 // The time was not integrated .. make th 488 // The time was not integrated .. make the best estimate possible
533 // 489 //
534 G4double initialVelocity = stepData.GetPr << 490 G4double finalVelocity = track.GetVelocity() ;
535 G4double stepLength = track.GetStepL << 491 G4double initialVelocity = stepData.GetPreStepPoint()->GetVelocity() ;
>> 492 G4double stepLength = track.GetStepLength() ;
536 493
537 deltaTime= 0.0; // in case initialVeloci 494 deltaTime= 0.0; // in case initialVelocity = 0
538 if ( initialVelocity > 0.0 ) { deltaTime << 495 const G4DynamicParticle* fpDynamicParticle = track.GetDynamicParticle();
539 << 496 if (fpDynamicParticle->GetDefinition()== fOpticalPhoton)
>> 497 {
>> 498 // A photon is in the medium of the final point
>> 499 // during the step, so it has the final velocity.
>> 500 deltaTime = stepLength/finalVelocity ;
>> 501 }
>> 502 else if (finalVelocity > 0.0)
>> 503 {
>> 504 G4double meanInverseVelocity ;
>> 505 // deltaTime = stepLength/finalVelocity ;
>> 506 meanInverseVelocity = 0.5
>> 507 * ( 1.0 / initialVelocity + 1.0 / finalVelocity ) ;
>> 508 deltaTime = stepLength * meanInverseVelocity ;
>> 509 }
>> 510 else if( initialVelocity > 0.0 )
>> 511 {
>> 512 deltaTime = stepLength/initialVelocity ;
>> 513 }
540 fCandidateEndGlobalTime = startTime + d 514 fCandidateEndGlobalTime = startTime + deltaTime ;
541 fParticleChange.ProposeLocalTime( track. <<
542 } 515 }
543 else 516 else
544 { 517 {
545 deltaTime = fCandidateEndGlobalTime - sta 518 deltaTime = fCandidateEndGlobalTime - startTime ;
546 fParticleChange.ProposeGlobalTime( fCandi <<
547 } 519 }
548 520
>> 521 fParticleChange.ProposeGlobalTime( fCandidateEndGlobalTime ) ;
549 522
550 // Now Correct by Lorentz factor to get delt << 523 // Now Correct by Lorentz factor to get "proper" deltaTime
551 524
552 G4double restMass = track.GetDynamicP 525 G4double restMass = track.GetDynamicParticle()->GetMass() ;
553 G4double deltaProperTime = deltaTime*( restM 526 G4double deltaProperTime = deltaTime*( restMass/track.GetTotalEnergy() ) ;
554 527
555 fParticleChange.ProposeProperTime(track.GetP 528 fParticleChange.ProposeProperTime(track.GetProperTime() + deltaProperTime) ;
556 //fParticleChange.ProposeTrueStepLength( tra << 529 //fParticleChange. ProposeTrueStepLength( track.GetStepLength() ) ;
557 530
558 // If the particle is caught looping or is s 531 // If the particle is caught looping or is stuck (in very difficult
559 // boundaries) in a magnetic field (doing ma << 532 // boundaries) in a magnetic field (doing many steps)
>> 533 // THEN this kills it ...
560 // 534 //
561 if ( fParticleIsLooping ) 535 if ( fParticleIsLooping )
562 { 536 {
563 G4double endEnergy= fTransportEndKinetic 537 G4double endEnergy= fTransportEndKineticEnergy;
564 fNoLooperTrials ++; <<
565 auto particleType= track.GetDynamicParti <<
566 <<
567 G4bool stable = particleType->GetPDGStab <<
568 G4bool candidateForEnd = (endEnergy < fT <<
569 || (fNoLooperTrial <<
570 G4bool unstableAndKillable = !stable && <<
571 G4bool unstableForEnd = (endEnergy < fTh <<
572 && (fNoLooperTri <<
573 if( (candidateForEnd && stable) || (unst <<
574 { <<
575 // Kill the looping particle <<
576 // <<
577 fParticleChange.ProposeTrackStatus( fS <<
578 G4int particlePDG= particleType->GetPD <<
579 const G4int electronPDG= 11; // G4Elec <<
580 <<
581 // Simple statistics <<
582 fSumEnergyKilled += endEnergy; <<
583 fSumEnerSqKilled += endEnergy * endEne <<
584 fNumLoopersKilled++; <<
585 <<
586 if( endEnergy > fMaxEnergyKilled ) { <<
587 fMaxEnergyKilled = endEnergy; <<
588 fMaxEnergyKilledPDG = particlePDG; <<
589 } <<
590 if( particleType->GetPDGEncoding() != <<
591 { <<
592 fSumEnergyKilled_NonElectron += end <<
593 fSumEnerSqKilled_NonElectron += end <<
594 fNumLoopersKilled_NonElectron++; <<
595 <<
596 if( endEnergy > fMaxEnergyKilled_No <<
597 { <<
598 fMaxEnergyKilled_NonElectron = e <<
599 fMaxEnergyKilled_NonElecPDG = p <<
600 } <<
601 } <<
602 538
603 if( endEnergy > fThreshold_Warning_Ene << 539 if( (endEnergy < fThreshold_Important_Energy)
604 { << 540 || (fNoLooperTrials >= fThresholdTrials ) ){
605 fpLogger->ReportLoopingTrack( track, << 541 // Kill the looping particle
606 noCall << 542 //
607 } << 543 fParticleChange.ProposeTrackStatus( fStopAndKill ) ;
608 fNoLooperTrials=0; << 544
>> 545 // 'Bare' statistics
>> 546 fSumEnergyKilled += endEnergy;
>> 547 if( endEnergy > fMaxEnergyKilled) { fMaxEnergyKilled= endEnergy; }
>> 548
>> 549 #ifdef G4VERBOSE
>> 550 if( (fVerboseLevel > 1) ||
>> 551 ( endEnergy > fThreshold_Warning_Energy ) ) {
>> 552 G4cout << " G4Transportation is killing track that is looping or stuck "
>> 553 << G4endl
>> 554 << " This track has " << track.GetKineticEnergy() / MeV
>> 555 << " MeV energy." << G4endl;
>> 556 G4cout << " Number of trials = " << fNoLooperTrials
>> 557 << " No of calls to AlongStepDoIt = " << noCalls
>> 558 << G4endl;
>> 559 }
>> 560 #endif
>> 561 fNoLooperTrials=0;
609 } 562 }
610 else << 563 else{
611 { << 564 fNoLooperTrials ++;
612 fMaxEnergySaved = std::max( endEnergy, <<
613 if( fNoLooperTrials == 1 ) { <<
614 fSumEnergySaved += endEnergy; <<
615 if ( !stable ) <<
616 fSumEnergyUnstableSaved += endEne <<
617 } <<
618 #ifdef G4VERBOSE 565 #ifdef G4VERBOSE
619 if( verboseLevel > 2 && ! fSilenceLoop << 566 if( (fVerboseLevel > 2) ){
620 { << 567 G4cout << " Transportation::AlongStepDoIt(): Particle looping - "
621 G4cout << " " << __func__ << 568 << " Number of trials = " << fNoLooperTrials
622 << " Particle is looping but << 569 << " No of calls to = " << noCalls
623 << " Number of trials = " < << 570 << G4endl;
624 << " No of calls to = " << << 571 }
625 } <<
626 #endif 572 #endif
627 } 573 }
628 } << 574 }else{
629 else <<
630 { <<
631 fNoLooperTrials=0; 575 fNoLooperTrials=0;
632 } 576 }
633 577
634 // Another (sometimes better way) is to use 578 // Another (sometimes better way) is to use a user-limit maximum Step size
635 // to alleviate this problem .. 579 // to alleviate this problem ..
636 580
637 // Introduce smooth curved trajectories to p 581 // Introduce smooth curved trajectories to particle-change
638 // 582 //
639 fParticleChange.SetPointerToVectorOfAuxiliar 583 fParticleChange.SetPointerToVectorOfAuxiliaryPoints
640 (fFieldPropagator->GimmeTrajectoryVectorAn 584 (fFieldPropagator->GimmeTrajectoryVectorAndForgetIt() );
641 585
642 return &fParticleChange ; 586 return &fParticleChange ;
643 } 587 }
644 588
645 ////////////////////////////////////////////// 589 //////////////////////////////////////////////////////////////////////////
646 // 590 //
647 // This ensures that the PostStep action is a 591 // This ensures that the PostStep action is always called,
648 // so that it can do the relocation if it is 592 // so that it can do the relocation if it is needed.
649 // 593 //
650 594
651 G4double G4Transportation:: 595 G4double G4Transportation::
652 PostStepGetPhysicalInteractionLength( const G4 596 PostStepGetPhysicalInteractionLength( const G4Track&,
653 G4 597 G4double, // previousStepSize
654 G4 598 G4ForceCondition* pForceCond )
655 { << 599 {
656 fFieldExertedForce = false; // Not known <<
657 *pForceCond = Forced ; 600 *pForceCond = Forced ;
658 return DBL_MAX ; // was kInfinity ; but con 601 return DBL_MAX ; // was kInfinity ; but convention now is DBL_MAX
659 } 602 }
660 603
661 ////////////////////////////////////////////// 604 /////////////////////////////////////////////////////////////////////////////
662 <<
663 void G4Transportation::SetTouchableInformation <<
664 { <<
665 const G4VPhysicalVolume* pNewVol = touchable <<
666 const G4Material* pNewMaterial = 0 ; <<
667 G4VSensitiveDetector* pNewSensitiveDetector <<
668 <<
669 if( pNewVol != 0 ) <<
670 { <<
671 pNewMaterial= pNewVol->GetLogicalVolume()- <<
672 pNewSensitiveDetector= pNewVol->GetLogical <<
673 } <<
674 <<
675 fParticleChange.SetMaterialInTouchable( (G4M <<
676 fParticleChange.SetSensitiveDetectorInToucha <<
677 // temporarily until Get/Set Material of Par <<
678 // and StepPoint can be made const. <<
679 <<
680 const G4MaterialCutsCouple* pNewMaterialCuts <<
681 if( pNewVol != 0 ) <<
682 { <<
683 pNewMaterialCutsCouple=pNewVol->GetLogical <<
684 } <<
685 <<
686 if ( pNewVol!=0 && pNewMaterialCutsCouple!=0 <<
687 && pNewMaterialCutsCouple->GetMaterial()!= <<
688 { <<
689 // for parametrized volume <<
690 // <<
691 pNewMaterialCutsCouple = <<
692 G4ProductionCutsTable::GetProductionCuts <<
693 ->GetMaterialCuts <<
694 pNewMaterialCut <<
695 } <<
696 fParticleChange.SetMaterialCutsCoupleInTouch <<
697 <<
698 // Set the touchable in ParticleChange <<
699 // this must always be done because the part <<
700 // uses this value to overwrite the current <<
701 // <<
702 fParticleChange.SetTouchableHandle(touchable <<
703 } <<
704 <<
705 ////////////////////////////////////////////// <<
706 // 605 //
707 606
708 G4VParticleChange* G4Transportation::PostStepD 607 G4VParticleChange* G4Transportation::PostStepDoIt( const G4Track& track,
709 608 const G4Step& )
710 { 609 {
711 G4TouchableHandle retCurrentTouchable ; / << 610 G4TouchableHandle retCurrentTouchable ; // The one to return
712 G4bool isLastStep= false; <<
713 611
714 // Initialize ParticleChange (by setting al 612 // Initialize ParticleChange (by setting all its members equal
715 // to correspond 613 // to corresponding members in G4Track)
716 // fParticleChange.Initialize(track) ; // T 614 // fParticleChange.Initialize(track) ; // To initialise TouchableChange
717 615
718 fParticleChange.ProposeTrackStatus(track.Get 616 fParticleChange.ProposeTrackStatus(track.GetTrackStatus()) ;
719 617
720 // If the Step was determined by the volume 618 // If the Step was determined by the volume boundary,
721 // logically relocate the particle 619 // logically relocate the particle
722 << 620
723 if(fGeometryLimitedStep) 621 if(fGeometryLimitedStep)
724 { 622 {
725 // fCurrentTouchable will now become the p 623 // fCurrentTouchable will now become the previous touchable,
726 // and what was the previous will be freed 624 // and what was the previous will be freed.
727 // (Needed because the preStepPoint can po 625 // (Needed because the preStepPoint can point to the previous touchable)
728 626
729 fLinearNavigator->SetGeometricallyLimitedS 627 fLinearNavigator->SetGeometricallyLimitedStep() ;
730 fLinearNavigator-> 628 fLinearNavigator->
731 LocateGlobalPointAndUpdateTouchableHandle( 629 LocateGlobalPointAndUpdateTouchableHandle( track.GetPosition(),
732 630 track.GetMomentumDirection(),
733 631 fCurrentTouchableHandle,
734 632 true ) ;
735 // Check whether the particle is out of th 633 // Check whether the particle is out of the world volume
736 // If so it has exited and must be killed. 634 // If so it has exited and must be killed.
737 // 635 //
738 if( fCurrentTouchableHandle->GetVolume() = 636 if( fCurrentTouchableHandle->GetVolume() == 0 )
739 { 637 {
740 fParticleChange.ProposeTrackStatus( fSt 638 fParticleChange.ProposeTrackStatus( fStopAndKill ) ;
741 } 639 }
742 retCurrentTouchable = fCurrentTouchableHan 640 retCurrentTouchable = fCurrentTouchableHandle ;
743 fParticleChange.SetTouchableHandle( fCurre 641 fParticleChange.SetTouchableHandle( fCurrentTouchableHandle ) ;
744 <<
745 // Update the Step flag which identifies t <<
746 if( !fFieldExertedForce ) <<
747 isLastStep = fLinearNavigator->ExitedM <<
748 || fLinearNavigator->Entered <<
749 else <<
750 isLastStep = fFieldPropagator->IsLastSt <<
751 } 642 }
752 else // fGeometryLimitedStep 643 else // fGeometryLimitedStep is false
753 { 644 {
754 // This serves only to move the Navigator' 645 // This serves only to move the Navigator's location
755 // 646 //
756 fLinearNavigator->LocateGlobalPointWithinV 647 fLinearNavigator->LocateGlobalPointWithinVolume( track.GetPosition() ) ;
757 648
758 // The value of the track's current Toucha 649 // The value of the track's current Touchable is retained.
759 // (and it must be correct because we must 650 // (and it must be correct because we must use it below to
760 // overwrite the (unset) one in particle c 651 // overwrite the (unset) one in particle change)
761 // It must be fCurrentTouchable too ?? 652 // It must be fCurrentTouchable too ??
762 // 653 //
763 fParticleChange.SetTouchableHandle( track. 654 fParticleChange.SetTouchableHandle( track.GetTouchableHandle() ) ;
764 retCurrentTouchable = track.GetTouchableHa 655 retCurrentTouchable = track.GetTouchableHandle() ;
765 <<
766 isLastStep= false; <<
767 } // endif ( fGeometryLimitedStep ) 656 } // endif ( fGeometryLimitedStep )
768 fLastStepInVolume= isLastStep; <<
769 <<
770 fParticleChange.ProposeFirstStepInVolume(fFi <<
771 fParticleChange.ProposeLastStepInVolume(isLa <<
772 657
773 SetTouchableInformation(retCurrentTouchable) << 658 const G4VPhysicalVolume* pNewVol = retCurrentTouchable->GetVolume() ;
>> 659 const G4Material* pNewMaterial = 0 ;
>> 660 const G4VSensitiveDetector* pNewSensitiveDetector = 0 ;
>> 661
>> 662 if( pNewVol != 0 )
>> 663 {
>> 664 pNewMaterial= pNewVol->GetLogicalVolume()->GetMaterial();
>> 665 pNewSensitiveDetector= pNewVol->GetLogicalVolume()->GetSensitiveDetector();
>> 666 }
>> 667
>> 668 // ( <const_cast> pNewMaterial ) ;
>> 669 // ( <const_cast> pNewSensitiveDetector) ;
>> 670
>> 671 fParticleChange.SetMaterialInTouchable( (G4Material *) pNewMaterial ) ;
>> 672 fParticleChange.SetSensitiveDetectorInTouchable( (G4VSensitiveDetector *) pNewSensitiveDetector ) ;
>> 673
>> 674 const G4MaterialCutsCouple* pNewMaterialCutsCouple = 0;
>> 675 if( pNewVol != 0 )
>> 676 {
>> 677 pNewMaterialCutsCouple=pNewVol->GetLogicalVolume()->GetMaterialCutsCouple();
>> 678 }
>> 679
>> 680 if( pNewVol!=0 && pNewMaterialCutsCouple!=0 && pNewMaterialCutsCouple->GetMaterial()!=pNewMaterial )
>> 681 {
>> 682 // for parametrized volume
>> 683 //
>> 684 pNewMaterialCutsCouple =
>> 685 G4ProductionCutsTable::GetProductionCutsTable()
>> 686 ->GetMaterialCutsCouple(pNewMaterial,
>> 687 pNewMaterialCutsCouple->GetProductionCuts());
>> 688 }
>> 689 fParticleChange.SetMaterialCutsCoupleInTouchable( pNewMaterialCutsCouple );
>> 690
>> 691 // temporarily until Get/Set Material of ParticleChange,
>> 692 // and StepPoint can be made const.
>> 693 // Set the touchable in ParticleChange
>> 694 // this must always be done because the particle change always
>> 695 // uses this value to overwrite the current touchable pointer.
>> 696 //
>> 697 fParticleChange.SetTouchableHandle(retCurrentTouchable) ;
774 698
775 return &fParticleChange ; 699 return &fParticleChange ;
776 } 700 }
777 701
778 ////////////////////////////////////////////// << 702 // New method takes over the responsibility to reset the state of G4Transportation
779 // New method takes over the responsibility to << 703 // object at the start of a new track or the resumption of a suspended track.
780 // G4Transportation object at the start of a n <<
781 // of a suspended track. <<
782 // <<
783 704
784 void 705 void
785 G4Transportation::StartTracking(G4Track* aTrac 706 G4Transportation::StartTracking(G4Track* aTrack)
786 { 707 {
787 G4VProcess::StartTracking(aTrack); 708 G4VProcess::StartTracking(aTrack);
788 fNewTrack= true; <<
789 fFirstStepInVolume= true; <<
790 fLastStepInVolume= false; <<
791 <<
792 // The actions here are those that were take <<
793 // when track.GetCurrentStepNumber()==1 <<
794 709
795 // Whether field exists should be determined << 710 // The actions here are those that were taken in AlongStepGPIL
796 G4FieldManagerStore* fieldMgrStore= G4FieldM << 711 // when track.GetCurrentStepNumber()==1
797 fAnyFieldExists = fieldMgrStore->size() > 0; << 712
798 <<
799 // reset safety value and center 713 // reset safety value and center
800 // 714 //
801 fPreviousSafety = 0.0 ; 715 fPreviousSafety = 0.0 ;
802 fPreviousSftOrigin = G4ThreeVector(0.,0.,0.) 716 fPreviousSftOrigin = G4ThreeVector(0.,0.,0.) ;
803 717
804 // reset looping counter -- for motion in fi 718 // reset looping counter -- for motion in field
805 fNoLooperTrials= 0; << 719 if( aTrack->GetCurrentStepNumber()==1 ) {
806 // Must clear this state .. else it depends << 720 fNoLooperTrials= 0;
807 // --> a better solution would set this fro <<
808 // Was if( aTrack->GetCurrentStepNumber()==1 <<
809 <<
810 // ChordFinder reset internal state <<
811 // <<
812 if( fFieldPropagator && fAnyFieldExists ) <<
813 { <<
814 fFieldPropagator->ClearPropagatorState(); <<
815 // Resets all state of field propagator <<
816 // values (in case of overlaps and to w <<
817 } 721 }
818 722
819 // Make sure to clear the chord finders of a << 723 // Propagator and ChordFinder: reset internal state
820 // 724 //
821 fieldMgrStore->ClearAllChordFindersState(); << 725 if( DoesGlobalFieldExist() ) {
>> 726 fFieldPropagator->ClearPropagatorState();
822 727
>> 728 G4ChordFinder* chordF= fFieldPropagator->GetChordFinder();
>> 729 if( chordF ) chordF->ResetStepEstimate();
>> 730 }
>> 731
823 // Update the current touchable handle (fro 732 // Update the current touchable handle (from the track's)
824 // 733 //
825 fCurrentTouchableHandle = aTrack->GetTouchab 734 fCurrentTouchableHandle = aTrack->GetTouchableHandle();
826 <<
827 // Inform field propagator of new track <<
828 // <<
829 fFieldPropagator->PrepareNewTrack(); <<
830 } <<
831 <<
832 ////////////////////////////////////////////// <<
833 // <<
834 <<
835 G4bool G4Transportation::EnableMagneticMoment( <<
836 { <<
837 G4bool lastValue= fUseMagneticMoment; <<
838 fUseMagneticMoment= useMoment; <<
839 return lastValue; <<
840 } <<
841 <<
842 ////////////////////////////////////////////// <<
843 // <<
844 <<
845 G4bool G4Transportation::EnableGravity(G4bool <<
846 { <<
847 G4bool lastValue= fUseGravity; <<
848 fUseGravity= useGravity; <<
849 return lastValue; <<
850 } <<
851 <<
852 ////////////////////////////////////////////// <<
853 // <<
854 // Supress (or not) warnings about 'looping' <<
855 <<
856 void G4Transportation::SetSilenceLooperWarning <<
857 { <<
858 fSilenceLooperWarnings= val; // Flag to *Su <<
859 } <<
860 <<
861 ////////////////////////////////////////////// <<
862 // <<
863 G4bool G4Transportation::GetSilenceLooperWarni <<
864 { <<
865 return fSilenceLooperWarnings; <<
866 } <<
867 <<
868 <<
869 ////////////////////////////////////////////// <<
870 // <<
871 void G4Transportation::SetHighLooperThresholds <<
872 { <<
873 // Restores the old high values -- potential <<
874 // HEP experiments. <<
875 // Caution: All tracks with E < 100 MeV tha <<
876 SetThresholdWarningEnergy( 100.0 * CLHEP: <<
877 SetThresholdImportantEnergy( 250.0 * CLHEP: <<
878 <<
879 G4int maxTrials = 10; <<
880 SetThresholdTrials( maxTrials ); <<
881 <<
882 PushThresholdsToLogger(); // Again, to be s <<
883 if( verboseLevel ) ReportLooperThresholds() <<
884 } <<
885 <<
886 ////////////////////////////////////////////// <<
887 void G4Transportation::SetLowLooperThresholds( <<
888 { <<
889 // These values were the default in Geant4 1 <<
890 SetThresholdWarningEnergy( 1.0 * CLHEP:: <<
891 SetThresholdImportantEnergy( 1.0 * CLHEP:: <<
892 <<
893 G4int maxTrials = 30; // A new value - was <<
894 SetThresholdTrials( maxTrials ); <<
895 <<
896 PushThresholdsToLogger(); // Again, to be s <<
897 if( verboseLevel ) ReportLooperThresholds() <<
898 } 735 }
899 736
900 ////////////////////////////////////////////// <<
901 // <<
902 void <<
903 G4Transportation::ReportMissingLogger( const c <<
904 { <<
905 const char* message= "Logger object missing <<
906 G4String classAndMethod= G4String("G4Transp <<
907 G4Exception(classAndMethod, "Missing Logger <<
908 } <<
909 <<
910 <<
911 ////////////////////////////////////////////// <<
912 // <<
913 void <<
914 G4Transportation::ReportLooperThresholds() <<
915 { <<
916 PushThresholdsToLogger(); // To be absolut <<
917 fpLogger->ReportLooperThresholds("G4Transpo <<
918 } <<
919 <<
920 ////////////////////////////////////////////// <<
921 // <<
922 void G4Transportation::ProcessDescription(std: <<
923 <<
924 // StreamInfo(std::ostream& out, const G4Parti <<
925 <<
926 { <<
927 G4String indent = " "; // : ""); <<
928 G4long oldPrec= outStr.precision(6); <<
929 // outStr << std::setprecision(6); <<
930 outStr << G4endl << indent << GetProcessName <<
931 <<
932 outStr << " Parameters for looping particl <<
933 << " warning-E = " << fThreshold_ <<
934 << " important E = " << fThreshol <<
935 << " thresholdTrials " << fThresh <<
936 outStr.precision(oldPrec); <<
937 } <<
938 737