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25 // 25 //
26 // 26 //
27 // ------------------------------------------- 27 // -------------------------------------------------------------------
28 // 28 //
29 // GEANT4 Class file 29 // GEANT4 Class file
30 // 30 //
31 // 31 //
32 // File name: G4VMultipleScattering 32 // File name: G4VMultipleScattering
33 // 33 //
34 // Author: Vladimir Ivanchenko on base 34 // Author: Vladimir Ivanchenko on base of Laszlo Urban code
35 // 35 //
36 // Creation date: 25.03.2003 36 // Creation date: 25.03.2003
37 // 37 //
38 // Modifications: 38 // Modifications:
39 // 39 //
>> 40 // 13.04.03 Change printout (V.Ivanchenko)
>> 41 // 04-06-03 Fix compilation warnings (V.Ivanchenko)
40 // 16-07-03 Use G4VMscModel interface (V.Ivanc 42 // 16-07-03 Use G4VMscModel interface (V.Ivanchenko)
41 // 03-11-03 Fix initialisation problem in Retr 43 // 03-11-03 Fix initialisation problem in RetrievePhysicsTable (V.Ivanchenko)
42 // 04-11-03 Update PrintInfoDefinition (V.Ivan 44 // 04-11-03 Update PrintInfoDefinition (V.Ivanchenko)
43 // 01-03-04 SampleCosineTheta signature change 45 // 01-03-04 SampleCosineTheta signature changed
44 // 22-04-04 SampleCosineTheta signature change 46 // 22-04-04 SampleCosineTheta signature changed back to original
45 // 27-08-04 Add InitialiseForRun method (V.Iva 47 // 27-08-04 Add InitialiseForRun method (V.Ivanchneko)
46 // 08-11-04 Migration to new interface of Stor 48 // 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko)
47 // 11-03-05 Shift verbose level by 1 (V.Ivantc 49 // 11-03-05 Shift verbose level by 1 (V.Ivantchenko)
48 // 15-04-05 optimize internal interface (V.Iva 50 // 15-04-05 optimize internal interface (V.Ivanchenko)
49 // 15-04-05 remove boundary flag (V.Ivanchenko 51 // 15-04-05 remove boundary flag (V.Ivanchenko)
50 // 27-10-05 introduce virtual function MscStep 52 // 27-10-05 introduce virtual function MscStepLimitation() (V.Ivanchenko)
51 // 12-04-07 Add verbosity at destruction (V.Iv 53 // 12-04-07 Add verbosity at destruction (V.Ivanchenko)
52 // 27-10-07 Virtual functions moved to source 54 // 27-10-07 Virtual functions moved to source (V.Ivanchenko)
53 // 11-03-08 Set skin value does not effect ste 55 // 11-03-08 Set skin value does not effect step limit type (V.Ivanchenko)
54 // 24-06-09 Removed hidden bin in G4PhysicsVec 56 // 24-06-09 Removed hidden bin in G4PhysicsVector (V.Ivanchenko)
55 // 04-06-13 Adoptation to MT mode (V.Ivanchenk 57 // 04-06-13 Adoptation to MT mode (V.Ivanchenko)
56 // 58 //
>> 59 // Class Description:
>> 60 //
>> 61 // It is the generic process of multiple scattering it includes common
>> 62 // part of calculations for all charged particles
57 63
58 // ------------------------------------------- 64 // -------------------------------------------------------------------
59 // 65 //
60 //....oooOO0OOooo........oooOO0OOooo........oo 66 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
61 //....oooOO0OOooo........oooOO0OOooo........oo 67 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
62 68
63 #include "G4VMultipleScattering.hh" 69 #include "G4VMultipleScattering.hh"
64 #include "G4PhysicalConstants.hh" 70 #include "G4PhysicalConstants.hh"
65 #include "G4SystemOfUnits.hh" 71 #include "G4SystemOfUnits.hh"
66 #include "G4LossTableManager.hh" 72 #include "G4LossTableManager.hh"
67 #include "G4MaterialCutsCouple.hh" 73 #include "G4MaterialCutsCouple.hh"
68 #include "G4Step.hh" 74 #include "G4Step.hh"
69 #include "G4ParticleDefinition.hh" 75 #include "G4ParticleDefinition.hh"
70 #include "G4VEmFluctuationModel.hh" 76 #include "G4VEmFluctuationModel.hh"
71 #include "G4UnitsTable.hh" 77 #include "G4UnitsTable.hh"
72 #include "G4ProductionCutsTable.hh" 78 #include "G4ProductionCutsTable.hh"
73 #include "G4Electron.hh" 79 #include "G4Electron.hh"
74 #include "G4GenericIon.hh" 80 #include "G4GenericIon.hh"
75 #include "G4TransportationManager.hh" 81 #include "G4TransportationManager.hh"
76 #include "G4SafetyHelper.hh" 82 #include "G4SafetyHelper.hh"
77 #include "G4ParticleTable.hh" 83 #include "G4ParticleTable.hh"
78 #include "G4ProcessVector.hh" 84 #include "G4ProcessVector.hh"
79 #include "G4ProcessManager.hh" 85 #include "G4ProcessManager.hh"
80 #include "G4LossTableBuilder.hh" <<
81 #include "G4EmTableUtil.hh" <<
82 #include <iostream> 86 #include <iostream>
83 87
84 //....oooOO0OOooo........oooOO0OOooo........oo 88 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
85 89
86 G4VMultipleScattering::G4VMultipleScattering(c << 90 G4VMultipleScattering::G4VMultipleScattering(const G4String& name, G4ProcessType)
87 : G4VContinuousDiscreteProcess("msc", fElect 91 : G4VContinuousDiscreteProcess("msc", fElectromagnetic),
>> 92 numberOfModels(0),
>> 93 firstParticle(nullptr),
>> 94 currParticle(nullptr),
>> 95 stepLimit(fUseSafety),
>> 96 facrange(0.04),
>> 97 latDisplacement(true),
>> 98 isIon(false),
>> 99 fDispBeyondSafety(false),
88 fNewPosition(0.,0.,0.), 100 fNewPosition(0.,0.,0.),
89 fNewDirection(0.,0.,1.) 101 fNewDirection(0.,0.,1.)
90 { 102 {
91 theParameters = G4EmParameters::Instance(); 103 theParameters = G4EmParameters::Instance();
92 SetVerboseLevel(1); 104 SetVerboseLevel(1);
93 SetProcessSubType(fMultipleScattering); 105 SetProcessSubType(fMultipleScattering);
>> 106 if("ionmsc" == name) { firstParticle = G4GenericIon::GenericIon(); }
94 107
95 lowestKinEnergy = 10*CLHEP::eV; 108 lowestKinEnergy = 10*CLHEP::eV;
96 109
97 geomMin = 0.05*CLHEP::nm; << 110 physStepLimit = gPathLength = tPathLength = 0.0;
>> 111 fIonisation = nullptr;
>> 112
>> 113 geomMin = 0.05*CLHEP::nm;
98 minDisplacement2 = geomMin*geomMin; 114 minDisplacement2 = geomMin*geomMin;
99 115
100 pParticleChange = &fParticleChange; 116 pParticleChange = &fParticleChange;
>> 117 safetyHelper = nullptr;
>> 118 fPositionChanged = false;
>> 119 isActive = false;
101 120
>> 121 currentModel = nullptr;
102 modelManager = new G4EmModelManager(); 122 modelManager = new G4EmModelManager();
103 emManager = G4LossTableManager::Instance(); 123 emManager = G4LossTableManager::Instance();
104 mscModels.reserve(2); 124 mscModels.reserve(2);
105 emManager->Register(this); 125 emManager->Register(this);
106 } 126 }
107 127
108 //....oooOO0OOooo........oooOO0OOooo........oo 128 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
109 129
110 G4VMultipleScattering::~G4VMultipleScattering( 130 G4VMultipleScattering::~G4VMultipleScattering()
111 { 131 {
>> 132 /*
>> 133 if(1 < verboseLevel) {
>> 134 G4cout << "G4VMultipleScattering destruct " << GetProcessName()
>> 135 << G4endl;
>> 136 }
>> 137 */
112 delete modelManager; 138 delete modelManager;
113 emManager->DeRegister(this); 139 emManager->DeRegister(this);
114 } 140 }
115 141
116 //....oooOO0OOooo........oooOO0OOooo........oo 142 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
117 143
118 void G4VMultipleScattering::AddEmModel(G4int o << 144 void G4VMultipleScattering::AddEmModel(G4int order, G4VEmModel* p,
119 const G 145 const G4Region* region)
120 { 146 {
121 if(nullptr == ptr) { return; } << 147 if(!p) { return; }
122 G4VEmFluctuationModel* fm = nullptr; 148 G4VEmFluctuationModel* fm = nullptr;
123 modelManager->AddEmModel(order, ptr, fm, reg << 149 modelManager->AddEmModel(order, p, fm, region);
124 ptr->SetParticleChange(pParticleChange); << 150 p->SetParticleChange(pParticleChange);
125 } 151 }
126 152
127 //....oooOO0OOooo........oooOO0OOooo........oo 153 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
128 154
129 void G4VMultipleScattering::SetEmModel(G4VMscM << 155 void G4VMultipleScattering::SetEmModel(G4VMscModel* p, size_t)
130 { 156 {
131 if(nullptr == ptr) { return; } << 157 for(auto & msc : mscModels) { if(msc == p) { return; } }
132 if(!mscModels.empty()) { << 158 mscModels.push_back(p);
133 for(auto & msc : mscModels) { if(msc == pt << 159 }
134 } << 160
135 mscModels.push_back(ptr); << 161 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 162
>> 163 G4VMscModel* G4VMultipleScattering::EmModel(size_t index) const
>> 164 {
>> 165 return (index < mscModels.size()) ? mscModels[index] : nullptr;
136 } 166 }
137 167
138 //....oooOO0OOooo........oooOO0OOooo........oo 168 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
139 169
140 void 170 void
141 G4VMultipleScattering::PreparePhysicsTable(con 171 G4VMultipleScattering::PreparePhysicsTable(const G4ParticleDefinition& part)
142 { 172 {
>> 173 if(1 < verboseLevel) {
>> 174 G4cout << "### G4VMultipleScattering::PrepearPhysicsTable() for "
>> 175 << GetProcessName()
>> 176 << " and particle " << part.GetParticleName()
>> 177 << G4endl;
>> 178 }
143 G4bool master = emManager->IsMaster(); 179 G4bool master = emManager->IsMaster();
144 if (nullptr == firstParticle) { firstParticl <<
145 180
146 emManager->PreparePhysicsTable(&part, this); << 181 if(!firstParticle) { firstParticle = ∂ }
>> 182 if(part.GetParticleType() == "nucleus") {
>> 183 stepLimit = fMinimal;
>> 184 latDisplacement = false;
>> 185 facrange = 0.2;
>> 186 G4String pname = part.GetParticleName();
>> 187 if(pname != "deuteron" && pname != "triton" &&
>> 188 pname != "alpha+" && pname != "helium" &&
>> 189 pname != "alpha" && pname != "He3" &&
>> 190 pname != "hydrogen") {
>> 191
>> 192 const G4ParticleDefinition* theGenericIon =
>> 193 G4ParticleTable::GetParticleTable()->FindParticle("GenericIon");
>> 194 if(&part == theGenericIon) { isIon = true; }
>> 195
>> 196 if(theGenericIon && firstParticle != theGenericIon) {
>> 197 G4ProcessManager* pm = theGenericIon->GetProcessManager();
>> 198 G4ProcessVector* v = pm->GetAlongStepProcessVector();
>> 199 size_t n = v->size();
>> 200 for(size_t j=0; j<n; ++j) {
>> 201 if((*v)[j] == this) {
>> 202 firstParticle = theGenericIon;
>> 203 isIon = true;
>> 204 break;
>> 205 }
>> 206 }
>> 207 }
>> 208 }
>> 209 }
>> 210
>> 211 emManager->PreparePhysicsTable(&part, this, master);
147 currParticle = nullptr; 212 currParticle = nullptr;
148 213
>> 214 if(1 < verboseLevel) {
>> 215 G4cout << "### G4VMultipleScattering::PrepearPhysicsTable() for "
>> 216 << GetProcessName()
>> 217 << " and particle " << part.GetParticleName()
>> 218 << " local particle " << firstParticle->GetParticleName()
>> 219 << " isIon: " << isIon << " isMaster: " << master
>> 220 << G4endl;
>> 221 }
>> 222
149 if(firstParticle == &part) { 223 if(firstParticle == &part) {
150 baseMat = emManager->GetTableBuilder()->Ge <<
151 G4EmTableUtil::PrepareMscProcess(this, par <<
152 stepLimit, facrange, <<
153 latDisplacement, master, <<
154 isIon, baseMat); <<
155 224
>> 225 // initialise process
>> 226 InitialiseProcess(firstParticle);
>> 227
>> 228 // heavy particles and not ions
>> 229 if(!isIon) {
>> 230 if(part.GetPDGMass() > MeV) {
>> 231 stepLimit = theParameters->MscMuHadStepLimitType();
>> 232 facrange = theParameters->MscMuHadRangeFactor();
>> 233 latDisplacement = theParameters->MuHadLateralDisplacement();
>> 234 } else {
>> 235 stepLimit = theParameters->MscStepLimitType();
>> 236 facrange = theParameters->MscRangeFactor();
>> 237 latDisplacement = theParameters->LateralDisplacement();
>> 238 }
>> 239 if(latDisplacement) {
>> 240 fDispBeyondSafety = theParameters->LatDisplacementBeyondSafety();
>> 241 }
>> 242 }
>> 243 if(master) { SetVerboseLevel(theParameters->Verbose()); }
>> 244 else { SetVerboseLevel(theParameters->WorkerVerbose()); }
>> 245
>> 246 // initialisation of models
156 numberOfModels = modelManager->NumberOfMod 247 numberOfModels = modelManager->NumberOfModels();
157 currentModel = GetModelByIndex(0); << 248 /*
>> 249 G4cout << "### G4VMultipleScattering::PreparePhysicsTable() for "
>> 250 << GetProcessName()
>> 251 << " and particle " << part.GetParticleName()
>> 252 << " Nmod= " << numberOfModels << " " << this
>> 253 << G4endl;
>> 254 */
>> 255 for(G4int i=0; i<numberOfModels; ++i) {
>> 256 G4VMscModel* msc = static_cast<G4VMscModel*>(GetModelByIndex(i));
>> 257 if(!msc) { continue; }
>> 258 msc->SetIonisation(nullptr, firstParticle);
>> 259 msc->SetMasterThread(master);
>> 260 currentModel = msc;
>> 261 msc->SetPolarAngleLimit(theParameters->MscThetaLimit());
>> 262 G4double emax =
>> 263 std::min(msc->HighEnergyLimit(),theParameters->MaxKinEnergy());
>> 264 msc->SetHighEnergyLimit(emax);
>> 265 }
158 266
159 if (nullptr == safetyHelper) { << 267 modelManager->Initialise(firstParticle, G4Electron::Electron(),
>> 268 10.0, verboseLevel);
>> 269
>> 270 if(!safetyHelper) {
160 safetyHelper = G4TransportationManager:: 271 safetyHelper = G4TransportationManager::GetTransportationManager()
161 ->GetSafetyHelper(); << 272 ->GetSafetyHelper();
162 safetyHelper->InitialiseHelper(); 273 safetyHelper->InitialiseHelper();
163 } 274 }
164 } 275 }
165 } 276 }
166 277
167 //....oooOO0OOooo........oooOO0OOooo........oo 278 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
168 279
169 void G4VMultipleScattering::BuildPhysicsTable( 280 void G4VMultipleScattering::BuildPhysicsTable(const G4ParticleDefinition& part)
170 { 281 {
>> 282 G4String num = part.GetParticleName();
171 G4bool master = emManager->IsMaster(); 283 G4bool master = emManager->IsMaster();
172 << 284 if(1 < verboseLevel) {
173 if(firstParticle == &part) { << 285 G4cout << "### G4VMultipleScattering::BuildPhysicsTable() for "
174 emManager->BuildPhysicsTable(&part); << 286 << GetProcessName()
>> 287 << " and particle " << num << " isIon: " << isIon
>> 288 << " IsMaster: " << master << G4endl;
175 } 289 }
176 const G4VMultipleScattering* ptr = this; << 290 const G4VMultipleScattering* masterProcess =
177 if(!master) { << 291 static_cast<const G4VMultipleScattering*>(GetMasterProcess());
178 ptr = static_cast<const G4VMultipleScatter << 292
>> 293 if(firstParticle == &part) {
>> 294 /*
>> 295 G4cout << "### G4VMultipleScattering::BuildPhysicsTable() for "
>> 296 << GetProcessName()
>> 297 << " and particle " << num
>> 298 << " IsMaster= " << G4LossTableManager::Instance()->IsMaster()
>> 299 << " " << this
>> 300 << G4endl;
>> 301 */
>> 302 emManager->BuildPhysicsTable(firstParticle);
>> 303
>> 304 if(!master) {
>> 305 // initialisation of models
>> 306 /*
>> 307 G4cout << "### G4VMultipleScattering::BuildPhysicsTable() for "
>> 308 << GetProcessName()
>> 309 << " and particle " << num
>> 310 << " Nmod= " << numberOfModels << " " << this
>> 311 << G4endl;
>> 312 */
>> 313 for(G4int i=0; i<numberOfModels; ++i) {
>> 314 G4VMscModel* msc = static_cast<G4VMscModel*>(GetModelByIndex(i));
>> 315 if(!msc) { continue; }
>> 316 G4VMscModel* msc0=
>> 317 static_cast<G4VMscModel*>(masterProcess->GetModelByIndex(i));
>> 318 msc->SetCrossSectionTable(msc0->GetCrossSectionTable(), false);
>> 319 msc->InitialiseLocal(firstParticle, msc0);
>> 320 }
>> 321 }
179 } 322 }
180 323
181 G4EmTableUtil::BuildMscProcess(this, ptr, pa << 324 // explicitly defined printout by particle name
182 numberOfModels, master); << 325 if(1 < verboseLevel ||
>> 326 (0 < verboseLevel && (num == "e-" ||
>> 327 num == "e+" || num == "mu+" ||
>> 328 num == "mu-" || num == "proton"||
>> 329 num == "pi+" || num == "pi-" ||
>> 330 num == "kaon+" || num == "kaon-" ||
>> 331 num == "alpha" || num == "anti_proton" ||
>> 332 num == "GenericIon" || num == "alpha+" ||
>> 333 num == "alpha++" )))
>> 334 {
>> 335 StreamInfo(G4cout, part);
>> 336 }
>> 337
>> 338 if(1 < verboseLevel) {
>> 339 G4cout << "### G4VMultipleScattering::BuildPhysicsTable() done for "
>> 340 << GetProcessName()
>> 341 << " and particle " << num
>> 342 << G4endl;
>> 343 }
183 } 344 }
184 345
185 //....oooOO0OOooo........oooOO0OOooo........oo 346 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
186 347
187 void G4VMultipleScattering::StreamInfo(std::os 348 void G4VMultipleScattering::StreamInfo(std::ostream& outFile,
188 const G4ParticleDefinition& 349 const G4ParticleDefinition& part, G4bool rst) const
189 { 350 {
190 G4String indent = (rst ? " " : ""); 351 G4String indent = (rst ? " " : "");
191 outFile << G4endl << indent << GetProcessNam 352 outFile << G4endl << indent << GetProcessName() << ": ";
192 if (!rst) outFile << " for " << part.GetPart 353 if (!rst) outFile << " for " << part.GetParticleName();
193 outFile << " SubType= " << GetProcessSubTy 354 outFile << " SubType= " << GetProcessSubType() << G4endl;
>> 355 StreamProcessInfo(outFile);
194 modelManager->DumpModelList(outFile, verbose 356 modelManager->DumpModelList(outFile, verboseLevel);
195 } 357 }
196 358
197 //....oooOO0OOooo........oooOO0OOooo........oo 359 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
198 360
199 void G4VMultipleScattering::StartTracking(G4Tr 361 void G4VMultipleScattering::StartTracking(G4Track* track)
200 { 362 {
201 G4VEnergyLossProcess* eloss = nullptr; 363 G4VEnergyLossProcess* eloss = nullptr;
202 if(track->GetParticleDefinition() != currPar 364 if(track->GetParticleDefinition() != currParticle) {
203 currParticle = track->GetParticleDefinitio 365 currParticle = track->GetParticleDefinition();
204 fIonisation = emManager->GetEnergyLossProc 366 fIonisation = emManager->GetEnergyLossProcess(currParticle);
205 eloss = fIonisation; 367 eloss = fIonisation;
206 } 368 }
>> 369 /*
>> 370 G4cout << "G4VMultipleScattering::StartTracking Nmod= " << numberOfModels
>> 371 << " " << currParticle->GetParticleName()
>> 372 << " E(MeV)= " << track->GetKineticEnergy()
>> 373 << " Ion= " << eloss << " " << fIonisation << " IsMaster= "
>> 374 << G4LossTableManager::Instance()->IsMaster()
>> 375 << G4endl;
>> 376 */
207 for(G4int i=0; i<numberOfModels; ++i) { 377 for(G4int i=0; i<numberOfModels; ++i) {
208 G4VMscModel* msc = GetModelByIndex(i); << 378 /*
>> 379 G4cout << "Next model " << i << " " << msc
>> 380 << " Emin= " << msc->LowEnergyLimit()
>> 381 << " Emax= " << msc->HighEnergyLimit()
>> 382 << " Eact= " << msc->LowEnergyActivationLimit() << G4endl;
>> 383 */
>> 384 G4VEmModel* msc = GetModelByIndex(i);
209 msc->StartTracking(track); 385 msc->StartTracking(track);
210 if(nullptr != eloss) { << 386 if(eloss) {
211 msc->SetIonisation(eloss, currParticle); << 387 G4VMscModel* mscmod = static_cast<G4VMscModel*>(msc);
>> 388 if(mscmod) { mscmod->SetIonisation(fIonisation, currParticle); }
212 } 389 }
213 } 390 }
214 } << 391 }
215 392
216 //....oooOO0OOooo........oooOO0OOooo........oo 393 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
217 394
218 G4double G4VMultipleScattering::AlongStepGetPh 395 G4double G4VMultipleScattering::AlongStepGetPhysicalInteractionLength(
219 const G4Track& tr 396 const G4Track& track,
220 G4double, 397 G4double,
221 G4double currentM 398 G4double currentMinimalStep,
222 G4double&, 399 G4double&,
223 G4GPILSelection* 400 G4GPILSelection* selection)
224 { 401 {
225 // get Step limit proposed by the process 402 // get Step limit proposed by the process
226 *selection = NotCandidateForSelection; 403 *selection = NotCandidateForSelection;
227 physStepLimit = gPathLength = tPathLength = 404 physStepLimit = gPathLength = tPathLength = currentMinimalStep;
228 405
229 G4double ekin = track.GetKineticEnergy(); 406 G4double ekin = track.GetKineticEnergy();
230 /* 407 /*
231 G4cout << "MSC::AlongStepGPIL: Ekin= " << ek 408 G4cout << "MSC::AlongStepGPIL: Ekin= " << ekin
232 << " " << currParticle->GetParticleN 409 << " " << currParticle->GetParticleName()
233 << " currMod " << currentModel 410 << " currMod " << currentModel
234 << G4endl; 411 << G4endl;
235 */ 412 */
236 // isIon flag is used only to select a model 413 // isIon flag is used only to select a model
237 if(isIon) { 414 if(isIon) {
238 ekin *= proton_mass_c2/track.GetParticleDe 415 ekin *= proton_mass_c2/track.GetParticleDefinition()->GetPDGMass();
239 } 416 }
240 const G4MaterialCutsCouple* couple = track.G <<
241 417
242 // select new model, static cast is possible << 418 // select new model
243 if(1 < numberOfModels) { 419 if(1 < numberOfModels) {
244 currentModel = << 420 currentModel = static_cast<G4VMscModel*>(
245 static_cast<G4VMscModel*>(SelectModel(ek << 421 SelectModel(ekin,track.GetMaterialCutsCouple()->GetIndex()));
246 } 422 }
247 currentModel->SetCurrentCouple(couple); <<
248 // msc is active is model is active, energy 423 // msc is active is model is active, energy above the limit,
249 // and step size is above the limit; 424 // and step size is above the limit;
250 // if it is active msc may limit the step 425 // if it is active msc may limit the step
251 if(currentModel->IsActive(ekin) && tPathLeng 426 if(currentModel->IsActive(ekin) && tPathLength > geomMin
252 && ekin >= lowestKinEnergy) { 427 && ekin >= lowestKinEnergy) {
253 isActive = true; 428 isActive = true;
254 tPathLength = 429 tPathLength =
255 currentModel->ComputeTruePathLengthLimit 430 currentModel->ComputeTruePathLengthLimit(track, gPathLength);
256 if (tPathLength < physStepLimit) { 431 if (tPathLength < physStepLimit) {
257 *selection = CandidateForSelection; 432 *selection = CandidateForSelection;
258 } 433 }
259 } else { << 434 } else { isActive = false; }
260 isActive = false; <<
261 gPathLength = DBL_MAX; <<
262 } <<
263 435
264 //if(currParticle->GetPDGMass() > GeV) 436 //if(currParticle->GetPDGMass() > GeV)
265 /* 437 /*
266 G4cout << "MSC::AlongStepGPIL: Ekin= " << ek 438 G4cout << "MSC::AlongStepGPIL: Ekin= " << ekin
267 << " " << currParticle->GetParticleN 439 << " " << currParticle->GetParticleName()
268 << " gPathLength= " << gPathLength 440 << " gPathLength= " << gPathLength
269 << " tPathLength= " << tPathLength 441 << " tPathLength= " << tPathLength
270 << " currentMinimalStep= " << current 442 << " currentMinimalStep= " << currentMinimalStep
271 << " isActive " << isActive << G4endl 443 << " isActive " << isActive << G4endl;
272 */ 444 */
273 return gPathLength; 445 return gPathLength;
274 } 446 }
275 447
276 //....oooOO0OOooo........oooOO0OOooo........oo 448 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
277 449
278 G4double 450 G4double
279 G4VMultipleScattering::PostStepGetPhysicalInte 451 G4VMultipleScattering::PostStepGetPhysicalInteractionLength(
280 const G4Track&, G4double, G4Forc 452 const G4Track&, G4double, G4ForceCondition* condition)
281 { 453 {
282 *condition = NotForced; 454 *condition = NotForced;
283 return DBL_MAX; 455 return DBL_MAX;
284 } 456 }
285 457
286 //....oooOO0OOooo........oooOO0OOooo........oo 458 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
287 459
288 G4VParticleChange* 460 G4VParticleChange*
289 G4VMultipleScattering::AlongStepDoIt(const G4T 461 G4VMultipleScattering::AlongStepDoIt(const G4Track& track, const G4Step& step)
290 { 462 {
291 fParticleChange.InitialiseMSC(track, step); << 463 fParticleChange.ProposeMomentumDirection(
292 fNewPosition = fParticleChange.GetProposedPo << 464 step.GetPostStepPoint()->GetMomentumDirection());
>> 465 fNewPosition = step.GetPostStepPoint()->GetPosition();
>> 466 fParticleChange.ProposePosition(fNewPosition);
293 fPositionChanged = false; 467 fPositionChanged = false;
294 468
295 G4double geomLength = step.GetStepLength(); 469 G4double geomLength = step.GetStepLength();
296 470
297 // very small step - no msc 471 // very small step - no msc
298 if(!isActive) { 472 if(!isActive) {
299 tPathLength = geomLength; 473 tPathLength = geomLength;
300 474
301 // sample msc 475 // sample msc
302 } else { 476 } else {
303 G4double range = 477 G4double range =
304 currentModel->GetRange(currParticle,trac 478 currentModel->GetRange(currParticle,track.GetKineticEnergy(),
305 track.GetMaterial 479 track.GetMaterialCutsCouple());
306 480
307 tPathLength = currentModel->ComputeTrueSte 481 tPathLength = currentModel->ComputeTrueStepLength(geomLength);
308 482
309 /* 483 /*
310 if(currParticle->GetPDGMass() > 0.9*GeV) 484 if(currParticle->GetPDGMass() > 0.9*GeV)
311 G4cout << "G4VMsc::AlongStepDoIt: GeomLeng 485 G4cout << "G4VMsc::AlongStepDoIt: GeomLength= "
312 << geomLength 486 << geomLength
313 << " tPathLength= " << tPathLength 487 << " tPathLength= " << tPathLength
314 << " physStepLimit= " << physStepLi 488 << " physStepLimit= " << physStepLimit
315 << " dr= " << range - tPathLength 489 << " dr= " << range - tPathLength
316 << " ekin= " << track.GetKineticEne 490 << " ekin= " << track.GetKineticEnergy() << G4endl;
317 */ 491 */
318 // protection against wrong t->g->t conver 492 // protection against wrong t->g->t conversion
319 tPathLength = std::min(tPathLength, physSt 493 tPathLength = std::min(tPathLength, physStepLimit);
320 494
321 // do not sample scattering at the last or 495 // do not sample scattering at the last or at a small step
322 if(tPathLength < range && tPathLength > ge 496 if(tPathLength < range && tPathLength > geomMin) {
323 497
324 static const G4double minSafety = 1.20*C 498 static const G4double minSafety = 1.20*CLHEP::nm;
325 static const G4double sFact = 0.99; 499 static const G4double sFact = 0.99;
326 500
327 G4ThreeVector displacement = currentMode 501 G4ThreeVector displacement = currentModel->SampleScattering(
328 step.GetPostStepPoint()->GetMomentumDi 502 step.GetPostStepPoint()->GetMomentumDirection(),minSafety);
329 503
330 G4double r2 = displacement.mag2(); 504 G4double r2 = displacement.mag2();
331 //G4cout << " R= " << sqrt(r2) << " R 505 //G4cout << " R= " << sqrt(r2) << " Rmin= " << sqrt(minDisplacement2)
332 // << " flag= " << fDispBeyondSafety 506 // << " flag= " << fDispBeyondSafety << G4endl;
333 if(r2 > minDisplacement2) { 507 if(r2 > minDisplacement2) {
334 508
335 fPositionChanged = true; 509 fPositionChanged = true;
336 G4double dispR = std::sqrt(r2); 510 G4double dispR = std::sqrt(r2);
337 G4double postSafety = 511 G4double postSafety =
338 sFact*safetyHelper->ComputeSafety(fN 512 sFact*safetyHelper->ComputeSafety(fNewPosition, dispR);
339 //G4cout<<" R= "<< dispR<<" postSaf 513 //G4cout<<" R= "<< dispR<<" postSafety= "<<postSafety<<G4endl;
340 514
341 // far away from geometry boundary 515 // far away from geometry boundary
342 if(postSafety > 0.0 && dispR <= postSa 516 if(postSafety > 0.0 && dispR <= postSafety) {
343 fNewPosition += displacement; 517 fNewPosition += displacement;
344 518
345 //near the boundary 519 //near the boundary
346 } else { 520 } else {
347 // displaced point is definitely wit 521 // displaced point is definitely within the volume
348 //G4cout<<" R= "<<dispR<<" postSa 522 //G4cout<<" R= "<<dispR<<" postSafety= "<<postSafety<<G4endl;
349 if(dispR < postSafety) { 523 if(dispR < postSafety) {
350 fNewPosition += displacement; 524 fNewPosition += displacement;
351 525
>> 526 // optional extra mechanism is applied only if a particle
>> 527 // is stopped by the boundary
>> 528 } else if(fDispBeyondSafety && 0.0 == postSafety) {
>> 529 fNewPosition += displacement;
>> 530 G4double maxshift =
>> 531 std::min(2.0*dispR, geomLength*(physStepLimit/tPathLength - 1.0));
>> 532 G4double dist = 0.0;
>> 533 G4double safety = postSafety + dispR;
>> 534 fNewDirection = *(fParticleChange.GetMomentumDirection());
>> 535 /*
>> 536 G4cout << "##MSC before Recheck maxshift= " << maxshift
>> 537 << " postsafety= " << postSafety
>> 538 << " Ekin= " << track.GetKineticEnergy()
>> 539 << " " << track.GetDefinition()->GetParticleName()
>> 540 << G4endl;
>> 541 */
>> 542 // check if it is possible to shift to the boundary
>> 543 // and the shift is not large
>> 544 if(safetyHelper->RecheckDistanceToCurrentBoundary(fNewPosition,
>> 545 fNewDirection, maxshift, &dist, &safety)
>> 546 && std::abs(dist) < maxshift) {
>> 547 /*
>> 548 G4cout << "##MSC after Recheck dist= " << dist
>> 549 << " postsafety= " << postSafety
>> 550 << " t= " << tPathLength
>> 551 << " g= " << geomLength
>> 552 << " p= " << physStepLimit
>> 553 << G4endl;
>> 554 */
>> 555 // shift is positive
>> 556 if(dist >= 0.0) {
>> 557 tPathLength *= (1.0 + dist/geomLength);
>> 558 fNewPosition += dist*fNewDirection;
>> 559
>> 560 // shift is negative cannot be larger than geomLength
>> 561 } else {
>> 562 maxshift = std::min(maxshift, geomLength);
>> 563 if(0.0 < maxshift + dist) {
>> 564 const G4ThreeVector& postpoint =
>> 565 step.GetPostStepPoint()->GetPosition();
>> 566 G4ThreeVector point = fNewPosition + dist*fNewDirection;
>> 567 G4double R2 = (postpoint - point).mag2();
>> 568 G4double newdist = dist;
>> 569 // check not more than 10 extra boundaries
>> 570 for(G4int i=0; i<10; ++i) {
>> 571 dist = 0.0;
>> 572 if(safetyHelper->RecheckDistanceToCurrentBoundary(
>> 573 point, fNewDirection, maxshift, &dist, &safety)
>> 574 && std::abs(newdist + dist) < maxshift) {
>> 575 point += dist*fNewDirection;
>> 576 G4double R2new = (postpoint - point).mag2();
>> 577 //G4cout << "Backward i= " << i << " dist= " << dist
>> 578 // << " R2= " << R2new << G4endl;
>> 579 if(dist >= 0.0 || R2new > R2) { break; }
>> 580 R2 = R2new;
>> 581 fNewPosition = point;
>> 582 newdist += dist;
>> 583 } else {
>> 584 break;
>> 585 }
>> 586 }
>> 587 tPathLength *= (1.0 + newdist/geomLength);
>> 588 // shift on boundary is not possible for negative disp
>> 589 } else {
>> 590 fNewPosition += displacement*(postSafety/dispR - 1.0);
>> 591 }
>> 592 }
>> 593 // shift on boundary is not possible for any disp
>> 594 } else {
>> 595 fNewPosition += displacement*(postSafety/dispR - 1.0);
>> 596 }
352 // reduced displacement 597 // reduced displacement
353 } else if(postSafety > geomMin) { 598 } else if(postSafety > geomMin) {
354 fNewPosition += displacement*(post 599 fNewPosition += displacement*(postSafety/dispR);
355 600
356 // very small postSafety 601 // very small postSafety
357 } else { 602 } else {
358 fPositionChanged = false; 603 fPositionChanged = false;
359 } 604 }
360 } 605 }
361 if(fPositionChanged) { 606 if(fPositionChanged) {
362 safetyHelper->ReLocateWithinVolume(f 607 safetyHelper->ReLocateWithinVolume(fNewPosition);
363 fParticleChange.ProposePosition(fNew 608 fParticleChange.ProposePosition(fNewPosition);
364 } 609 }
365 } 610 }
366 } 611 }
367 } 612 }
368 fParticleChange.ProposeTrueStepLength(tPathL 613 fParticleChange.ProposeTrueStepLength(tPathLength);
369 return &fParticleChange; 614 return &fParticleChange;
370 } 615 }
371 616
372 //....oooOO0OOooo........oooOO0OOooo........oo 617 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
373 618
>> 619 G4VParticleChange*
>> 620 G4VMultipleScattering::PostStepDoIt(const G4Track& track, const G4Step&)
>> 621 {
>> 622 fParticleChange.Initialize(track);
>> 623 return &fParticleChange;
>> 624 }
>> 625
>> 626 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 627
374 G4double G4VMultipleScattering::GetContinuousS 628 G4double G4VMultipleScattering::GetContinuousStepLimit(
375 const G 629 const G4Track& track,
376 G4doubl 630 G4double previousStepSize,
377 G4doubl 631 G4double currentMinimalStep,
378 G4doubl 632 G4double& currentSafety)
379 { 633 {
380 G4GPILSelection selection = NotCandidateForS 634 G4GPILSelection selection = NotCandidateForSelection;
381 G4double x = AlongStepGetPhysicalInteraction 635 G4double x = AlongStepGetPhysicalInteractionLength(track,previousStepSize,
382 636 currentMinimalStep,
383 637 currentSafety,
384 638 &selection);
385 return x; 639 return x;
386 } 640 }
387 641
388 //....oooOO0OOooo........oooOO0OOooo........oo 642 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
389 643
390 G4double G4VMultipleScattering::ContinuousStep 644 G4double G4VMultipleScattering::ContinuousStepLimit(
391 const G 645 const G4Track& track,
392 G4doubl 646 G4double previousStepSize,
393 G4doubl 647 G4double currentMinimalStep,
394 G4doubl 648 G4double& currentSafety)
395 { 649 {
396 return GetContinuousStepLimit(track,previous 650 return GetContinuousStepLimit(track,previousStepSize,currentMinimalStep,
397 currentSafety) 651 currentSafety);
398 } 652 }
399 653
400 //....oooOO0OOooo........oooOO0OOooo........oo 654 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
401 655
402 G4double G4VMultipleScattering::GetMeanFreePat 656 G4double G4VMultipleScattering::GetMeanFreePath(
403 const G4Track&, G4double, G4Forc 657 const G4Track&, G4double, G4ForceCondition* condition)
404 { 658 {
405 *condition = Forced; 659 *condition = Forced;
406 return DBL_MAX; 660 return DBL_MAX;
407 } 661 }
408 662
409 //....oooOO0OOooo........oooOO0OOooo........oo 663 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
410 664
411 G4bool 665 G4bool
412 G4VMultipleScattering::StorePhysicsTable(const 666 G4VMultipleScattering::StorePhysicsTable(const G4ParticleDefinition* part,
413 const 667 const G4String& directory,
414 G4boo 668 G4bool ascii)
415 { 669 {
416 G4bool yes = true; 670 G4bool yes = true;
417 if(part != firstParticle || !emManager->IsMa << 671 if(part != firstParticle) { return yes; }
418 << 672 const G4VMultipleScattering* masterProcess =
419 return G4EmTableUtil::StoreMscTable(this, pa << 673 static_cast<const G4VMultipleScattering*>(GetMasterProcess());
420 numberOfModels, verboseLevel, << 674 if(masterProcess && masterProcess != this) { return yes; }
421 ascii); << 675
>> 676 G4int nmod = modelManager->NumberOfModels();
>> 677 static const G4String ss[4] = {"1","2","3","4"};
>> 678 for(G4int i=0; i<nmod; ++i) {
>> 679 G4VEmModel* msc = modelManager->GetModel(i);
>> 680 yes = true;
>> 681 G4PhysicsTable* table = msc->GetCrossSectionTable();
>> 682 if (table) {
>> 683 G4int j = std::min(i,3);
>> 684 G4String name =
>> 685 GetPhysicsTableFileName(part,directory,"LambdaMod"+ss[j],ascii);
>> 686 yes = table->StorePhysicsTable(name,ascii);
>> 687
>> 688 if ( yes ) {
>> 689 if ( verboseLevel>0 ) {
>> 690 G4cout << "Physics table are stored for "
>> 691 << part->GetParticleName()
>> 692 << " and process " << GetProcessName()
>> 693 << " with a name <" << name << "> " << G4endl;
>> 694 }
>> 695 } else {
>> 696 G4cout << "Fail to store Physics Table for "
>> 697 << part->GetParticleName()
>> 698 << " and process " << GetProcessName()
>> 699 << " in the directory <" << directory
>> 700 << "> " << G4endl;
>> 701 }
>> 702 }
>> 703 }
>> 704 return yes;
422 } 705 }
423 706
424 //....oooOO0OOooo........oooOO0OOooo........oo 707 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
425 708
426 G4bool 709 G4bool
427 G4VMultipleScattering::RetrievePhysicsTable(co 710 G4VMultipleScattering::RetrievePhysicsTable(const G4ParticleDefinition*,
428 co 711 const G4String&,
429 G4 712 G4bool)
430 { 713 {
431 return true; 714 return true;
432 } 715 }
433 716
434 //....oooOO0OOooo........oooOO0OOooo........oo 717 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
435 718
>> 719 void G4VMultipleScattering::SetIonisation(G4VEnergyLossProcess* p)
>> 720 {
>> 721 for(G4int i=0; i<numberOfModels; ++i) {
>> 722 G4VMscModel* msc = static_cast<G4VMscModel*>(GetModelByIndex(i, true));
>> 723 if(msc) { msc->SetIonisation(p, firstParticle); }
>> 724 }
>> 725 }
>> 726
>> 727 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 728
436 void G4VMultipleScattering::ProcessDescription 729 void G4VMultipleScattering::ProcessDescription(std::ostream& outFile) const
437 { 730 {
438 if(nullptr != firstParticle) { << 731 if(firstParticle) {
439 StreamInfo(outFile, *firstParticle, true); 732 StreamInfo(outFile, *firstParticle, true);
440 } 733 }
441 } 734 }
442 735
443 //....oooOO0OOooo........oooOO0OOooo........oo 736 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
444 737
445 738