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25 // 22 //
26 // 23 //
27 // ------------------------------------------- << 24 // $Id: G4MuPairProduction.cc,v 1.26 2001/11/09 13:52:32 maire Exp $
28 // << 25 // GEANT4 tag $Name: geant4-04-00 $
29 // GEANT4 Class file <<
30 // <<
31 // <<
32 // File name: G4MuPairProduction <<
33 // <<
34 // Author: Laszlo Urban <<
35 // <<
36 // Creation date: 30.05.1998 <<
37 // <<
38 // Modifications: <<
39 // 26 //
>> 27 //--------------- G4MuPairProduction physics process ---------------------------
>> 28 // by Laszlo Urban, May 1998
>> 29 //------------------------------------------------------------------------------
40 // 04-06-98 in DoIt,secondary production condi 30 // 04-06-98 in DoIt,secondary production condition:
41 // range>std::min(threshold,safety) << 31 // range>G4std::min(threshold,safety)
42 // 26-10-98 new stuff from R. Kokoulin + clean << 32 // 26/10/98 new stuff from R. Kokoulin + cleanup , L.Urban
43 // 06-05-99 bug fixed , L.Urban << 33 // 06/05/99 bug fixed , L.Urban
44 // 10-02-00 modifications+bug fix , new e.m. s << 34 // 10/02/00 modifications+bug fix , new e.m. structure, L.Urban
45 // 29-05-01 V.Ivanchenko minor changes to prov << 35 // 29/05/01 V.Ivanchenko minor changes to provide ANSI -wall compilation
46 // 10-08-01 new methods Store/Retrieve Physics 36 // 10-08-01 new methods Store/Retrieve PhysicsTable (mma)
47 // 17-09-01 migration of Materials to pure STL 37 // 17-09-01 migration of Materials to pure STL (mma)
48 // 20-09-01 (L.Urban) in ComputeMicroscopicCro 38 // 20-09-01 (L.Urban) in ComputeMicroscopicCrossSection, remove:
49 // if(MaxPairEnergy<CutInPairEnergy) 39 // if(MaxPairEnergy<CutInPairEnergy) MaxPairEnergy=CutInPairEnergy
50 // 26-09-01 completion of store/retrieve Physi 40 // 26-09-01 completion of store/retrieve PhysicsTable
51 // 28-09-01 suppression of theMuonPlus ..etc.. 41 // 28-09-01 suppression of theMuonPlus ..etc..data members (mma)
52 // 29-10-01 all static functions no more inlin 42 // 29-10-01 all static functions no more inlined (mma)
53 // 07-11-01 particleMass becomes a local varia << 43 // 07-11-01 particleMass becomes a local variable (mma)
54 // 19-08-02 V.Ivanchenko update to new design << 44 //------------------------------------------------------------------------------
55 // 23-12-02 Change interface in order to move <<
56 // 26-12-02 Secondary production moved to deri <<
57 // 13-02-03 SubCutoff regime is assigned to a <<
58 // 08-08-03 STD substitute standard (V.Ivanch <<
59 // 27-09-03 e+ set to be a secondary particle <<
60 // 12-11-03 G4EnergyLossSTD -> G4EnergyLossPro <<
61 // 10-02-04 Add lowestKinEnergy (V.Ivanchenko) <<
62 // 17-08-04 Utilise mu+ tables for mu- (V.Ivan <<
63 // 08-11-04 Migration to new interface of Stor <<
64 // 08-04-05 Major optimisation of internal int <<
65 // <<
66 // ------------------------------------------- <<
67 // <<
68 //....oooOO0OOooo........oooOO0OOooo........oo <<
69 //....oooOO0OOooo........oooOO0OOooo........oo <<
70 45
71 #include "G4MuPairProduction.hh" 46 #include "G4MuPairProduction.hh"
72 #include "G4SystemOfUnits.hh" << 47 #include "G4EnergyLossTables.hh"
73 #include "G4Positron.hh" << 48 #include "G4UnitsTable.hh"
74 #include "G4VEmModel.hh" << 49
75 #include "G4MuPairProductionModel.hh" << 50 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
76 #include "G4ElementData.hh" << 51
77 #include "G4EmParameters.hh" << 52 // static members
>> 53
>> 54 G4int G4MuPairProduction::nzdat = 5 ;
>> 55 G4double G4MuPairProduction::zdat[]={1.,4.,13.,26.,92.};
>> 56 G4int G4MuPairProduction::ntdat = 8 ;
>> 57 G4double G4MuPairProduction::tdat[]={1.e3,1.e4,1.e5,1.e6,1.e7,1.e8,1.e9,1.e10};
>> 58 G4int G4MuPairProduction::NBIN = 1000 ; //100 ;
>> 59 G4double G4MuPairProduction::ya[1001];
>> 60 G4double G4MuPairProduction::proba[5][8][1001];
>> 61 G4double G4MuPairProduction::MinPairEnergy = 4.*electron_mass_c2;
>> 62
>> 63 G4double G4MuPairProduction::LowerBoundLambda = 1.*keV;
>> 64 G4double G4MuPairProduction::UpperBoundLambda = 1000000.*TeV;
>> 65 G4int G4MuPairProduction::NbinLambda = 150;
>> 66
>> 67 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 68
>> 69 G4MuPairProduction::G4MuPairProduction(const G4String& processName)
>> 70 : G4VMuEnergyLoss(processName),
>> 71 theMeanFreePathTable(NULL)
>> 72 { }
>> 73
>> 74 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 75
>> 76 G4MuPairProduction::~G4MuPairProduction()
>> 77 {
>> 78 if (theMeanFreePathTable) {
>> 79 theMeanFreePathTable->clearAndDestroy();
>> 80 delete theMeanFreePathTable;
>> 81 }
>> 82
>> 83 if (&PartialSumSigma) {
>> 84 PartialSumSigma.clearAndDestroy();
>> 85 }
>> 86 }
>> 87
>> 88 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
78 89
79 //....oooOO0OOooo........oooOO0OOooo........oo << 90 void G4MuPairProduction::SetLowerBoundLambda(G4double val)
>> 91 {LowerBoundLambda = val;}
80 92
81 G4MuPairProduction::G4MuPairProduction(const G << 93 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
82 : G4VEnergyLossProcess(name), << 94
83 lowestKinEnergy(0.85*CLHEP::GeV) << 95 void G4MuPairProduction::SetUpperBoundLambda(G4double val)
>> 96 {UpperBoundLambda = val;}
>> 97
>> 98 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 99
>> 100 void G4MuPairProduction::SetNbinLambda(G4int n)
>> 101 {NbinLambda = n;}
>> 102
>> 103 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 104
>> 105 G4double G4MuPairProduction::GetLowerBoundLambda()
>> 106 { return LowerBoundLambda;}
>> 107
>> 108 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 109
>> 110 G4double G4MuPairProduction::GetUpperBoundLambda()
>> 111 { return UpperBoundLambda;}
>> 112
>> 113 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 114
>> 115 G4int G4MuPairProduction::GetNbinLambda()
>> 116 {return NbinLambda;}
>> 117
>> 118 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 119
>> 120 void G4MuPairProduction::BuildPhysicsTable(
>> 121 const G4ParticleDefinition& aParticleType)
>> 122 // just call BuildLossTable+BuildLambdaTable
84 { 123 {
85 SetProcessSubType(fPairProdByCharged); << 124
86 SetSecondaryParticle(G4Positron::Positron()) << 125 // get bining from EnergyLoss
87 SetIonisation(false); << 126 LowestKineticEnergy = GetLowerBoundEloss() ;
>> 127 HighestKineticEnergy = GetUpperBoundEloss() ;
>> 128 TotBin = GetNbinEloss() ;
>> 129
>> 130 BuildLossTable(aParticleType) ;
>> 131
>> 132 if(&aParticleType==G4MuonMinus::MuonMinus())
>> 133 {
>> 134 RecorderOfmuminusProcess[CounterOfmuminusProcess] = (*this).theLossTable ;
>> 135 CounterOfmuminusProcess++;
>> 136 }
>> 137 else
>> 138 {
>> 139 RecorderOfmuplusProcess[CounterOfmuplusProcess] = (*this).theLossTable ;
>> 140 CounterOfmuplusProcess++;
>> 141 }
>> 142
>> 143 // sampling table should be made only once !
>> 144 if(theMeanFreePathTable == NULL)
>> 145 MakeSamplingTables(&aParticleType);
>> 146
>> 147 G4double* electronCutInRange = G4Electron::Electron()->GetLengthCuts();
>> 148 if( !EqualCutVectors(electronCutInRange, lastelectronCutInRange))
>> 149 BuildLambdaTable(aParticleType) ;
>> 150
>> 151 G4VMuEnergyLoss::BuildDEDXTable(aParticleType);
>> 152
>> 153 if(&aParticleType==G4MuonPlus::MuonPlus()) PrintInfoDefinition();
>> 154 }
>> 155
>> 156 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 157
>> 158 void G4MuPairProduction::BuildLossTable(
>> 159 const G4ParticleDefinition& aParticleType)
>> 160 {
>> 161 G4double KineticEnergy,TotalEnergy,pairloss,Z,
>> 162 loss,natom,eCut,pCut ;
>> 163
>> 164 const G4MaterialTable* theMaterialTable =
>> 165 G4Material::GetMaterialTable();
>> 166 G4double particleMass = aParticleType.GetPDGMass();
>> 167 ElectronCutInKineticEnergy = G4Electron::Electron()->GetEnergyCuts();
>> 168 PositronCutInKineticEnergy = G4Positron::Positron()->GetEnergyCuts();
>> 169
>> 170 G4int numOfMaterials = G4Material::GetNumberOfMaterials();
>> 171
>> 172 if (theLossTable) {
>> 173 theLossTable->clearAndDestroy();
>> 174 delete theLossTable;
>> 175 }
>> 176
>> 177 theLossTable = new G4PhysicsTable(numOfMaterials) ;
>> 178
>> 179 for (G4int J=0; J<numOfMaterials; J++)
>> 180 {
>> 181 G4PhysicsLogVector* aVector = new G4PhysicsLogVector(
>> 182 LowestKineticEnergy,HighestKineticEnergy,TotBin);
>> 183 ElectronCutInKineticEnergyNow = ElectronCutInKineticEnergy[J] ;
>> 184 PositronCutInKineticEnergyNow = PositronCutInKineticEnergy[J] ;
>> 185 const G4Material* material = (*theMaterialTable)[J] ;
>> 186 const G4ElementVector* theElementVector =
>> 187 material->GetElementVector() ;
>> 188 const G4double* theAtomicNumDensityVector =
>> 189 material->GetAtomicNumDensityVector() ;
>> 190 const G4int NumberOfElements =
>> 191 material->GetNumberOfElements() ;
>> 192
>> 193 for (G4int i=0; i<TotBin; i++)
>> 194 {
>> 195 KineticEnergy = aVector->GetLowEdgeEnergy(i) ;
>> 196 TotalEnergy = KineticEnergy+particleMass ;
>> 197 eCut = ElectronCutInKineticEnergyNow ;
>> 198 pCut = PositronCutInKineticEnergyNow ;
>> 199
>> 200 if(eCut>KineticEnergy)
>> 201 eCut = KineticEnergy ;
>> 202 if(pCut>KineticEnergy)
>> 203 pCut = KineticEnergy ;
>> 204
>> 205 pairloss = 0.;
>> 206 for (G4int iel=0; iel<NumberOfElements; iel++)
>> 207 {
>> 208 Z=(*theElementVector)[iel]->GetZ();
>> 209 natom = theAtomicNumDensityVector[iel] ;
>> 210 loss = ComputePairLoss(&aParticleType,
>> 211 Z,KineticEnergy,eCut,pCut) ;
>> 212 pairloss += natom*loss ;
>> 213 }
>> 214 if(pairloss<0.)
>> 215 pairloss = 0. ;
>> 216 aVector->PutValue(i,pairloss);
>> 217 }
>> 218
>> 219 theLossTable->insert(aVector);
>> 220 }
88 } 221 }
89 222
90 //....oooOO0OOooo........oooOO0OOooo........oo << 223 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
91 224
92 G4bool G4MuPairProduction::IsApplicable(const << 225 G4double G4MuPairProduction::ComputePairLoss(
>> 226 const G4ParticleDefinition* ParticleType,
>> 227 G4double AtomicNumber,
>> 228 G4double KineticEnergy,
>> 229 G4double ElectronEnergyCut,
>> 230 G4double PositronEnergyCut)
93 { 231 {
94 return (p.GetPDGCharge() != 0.0); << 232 static const G4double
>> 233 xgi[] ={ 0.0199,0.1017,0.2372,0.4083,0.5917,0.7628,0.8983,0.9801 };
>> 234 static const G4double
>> 235 wgi[] ={ 0.0506,0.1112,0.1569,0.1813,0.1813,0.1569,0.1112,0.0506 };
>> 236 static const G4double ak1=6.9 ;
>> 237 static const G4double ak2=1.0 ;
>> 238 static const G4double sqrte = sqrt(exp(1.)) ;
>> 239 G4double z13 = exp(log(AtomicNumber)/3.) ;
>> 240
>> 241 G4double loss = 0.0 ;
>> 242
>> 243 if ( AtomicNumber < 1. ) return loss;
>> 244
>> 245 G4double CutInPairEnergy = ElectronEnergyCut+PositronEnergyCut
>> 246 +2.*electron_mass_c2 ;
>> 247 if( CutInPairEnergy <= MinPairEnergy ) return loss ;
>> 248
>> 249 G4double particleMass = ParticleType->GetPDGMass();
>> 250 G4double MaxPairEnergy = KineticEnergy+particleMass*(1.-0.75*sqrte*z13) ;
>> 251 if(MaxPairEnergy < MinPairEnergy)
>> 252 MaxPairEnergy = MinPairEnergy ;
>> 253
>> 254 if( CutInPairEnergy >= MaxPairEnergy )
>> 255 CutInPairEnergy = MaxPairEnergy ;
>> 256
>> 257 if(CutInPairEnergy <= MinPairEnergy) return loss ;
>> 258
>> 259 G4double aaa,bbb,hhh,x,epln,ep ;
>> 260 G4int kkk ;
>> 261 // calculate the rectricted loss
>> 262 // numerical integration in log(PairEnergy)
>> 263 aaa = log(MinPairEnergy) ;
>> 264 bbb = log(CutInPairEnergy) ;
>> 265 kkk = int((bbb-aaa)/ak1+ak2) ;
>> 266 hhh = (bbb-aaa)/kkk ;
>> 267
>> 268 for (G4int l=0 ; l<kkk; l++)
>> 269 {
>> 270 x = aaa+hhh*l ;
>> 271 for (G4int ll=0; ll<8; ll++)
>> 272 {
>> 273 epln=x+xgi[ll]*hhh ;
>> 274 ep = exp(epln) ;
>> 275 loss += wgi[ll]*ep*ep*ComputeDMicroscopicCrossSection(ParticleType,
>> 276 KineticEnergy,AtomicNumber,
>> 277 ep) ;
>> 278 }
>> 279 }
>> 280 loss *= hhh ;
>> 281 if (loss < 0.) loss = 0.;
>> 282 return loss ;
95 } 283 }
96 284
97 //....oooOO0OOooo........oooOO0OOooo........oo << 285 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
98 286
99 G4double G4MuPairProduction::MinPrimaryEnergy( << 287 void G4MuPairProduction::BuildLambdaTable(
100 const G4Material*, << 288 const G4ParticleDefinition& ParticleType)
101 G4double) <<
102 { 289 {
103 return lowestKinEnergy; << 290 G4double LowEdgeEnergy , Value;
>> 291 G4double FixedEnergy = (LowestKineticEnergy + HighestKineticEnergy)/2. ;
>> 292 const G4MaterialTable* theMaterialTable = G4Material::GetMaterialTable() ;
>> 293
>> 294 if (theMeanFreePathTable) {
>> 295 theMeanFreePathTable->clearAndDestroy();
>> 296 delete theMeanFreePathTable;
>> 297 }
>> 298 theMeanFreePathTable = new
>> 299 G4PhysicsTable( G4Material::GetNumberOfMaterials() ) ;
>> 300
>> 301 PartialSumSigma.clearAndDestroy();
>> 302 PartialSumSigma.resize(G4Material::GetNumberOfMaterials());
>> 303
>> 304 G4PhysicsLogVector* ptrVector;
>> 305 for ( size_t J=0 ; J < G4Material::GetNumberOfMaterials(); J++ )
>> 306 {
>> 307 ptrVector = new G4PhysicsLogVector(
>> 308 LowerBoundLambda,UpperBoundLambda,NbinLambda);
>> 309
>> 310
>> 311 const G4Material* material= (*theMaterialTable)[J];
>> 312
>> 313 for ( G4int i = 0 ; i < NbinLambda ; i++ )
>> 314 {
>> 315 LowEdgeEnergy = ptrVector->GetLowEdgeEnergy( i ) ;
>> 316 Value = ComputeMeanFreePath( &ParticleType, LowEdgeEnergy,
>> 317 material );
>> 318 ptrVector->PutValue( i , Value ) ;
>> 319 }
>> 320
>> 321 theMeanFreePathTable->insertAt( J , ptrVector );
>> 322
>> 323 // Compute the PartialSumSigma table at a given fixed energy
>> 324 ComputePartialSumSigma( &ParticleType, FixedEnergy, material) ;
>> 325 }
104 } 326 }
105 327
106 //....oooOO0OOooo........oooOO0OOooo........oo << 328 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
107 329
108 void G4MuPairProduction::InitialiseEnergyLossP << 330 void G4MuPairProduction::ComputePartialSumSigma(
109 const G4ParticleDefin << 331 const G4ParticleDefinition* ParticleType,
110 const G4ParticleDefinition*) << 332 G4double KineticEnergy,
>> 333 const G4Material* aMaterial)
111 { 334 {
112 if (isInitialised) { return; } << 335 G4int Imate = aMaterial->GetIndex();
113 isInitialised = true; << 336 G4int NbOfElements = aMaterial->GetNumberOfElements();
>> 337 const G4ElementVector* theElementVector = aMaterial->GetElementVector();
>> 338 const G4double* theAtomNumDensityVector = aMaterial->
>> 339 GetAtomicNumDensityVector();
>> 340 G4double ElectronEnergyCut = (G4Electron::Electron()->GetEnergyCuts())[Imate];
>> 341 G4double PositronEnergyCut = (G4Positron::Positron()->GetEnergyCuts())[Imate];
>> 342
>> 343 PartialSumSigma[Imate] = new G4DataVector();
>> 344
>> 345 G4double SIGMA = 0. ;
>> 346
>> 347 for ( G4int Ielem=0 ; Ielem < NbOfElements ; Ielem++ )
>> 348 {
>> 349 SIGMA += theAtomNumDensityVector[Ielem] *
>> 350 ComputeMicroscopicCrossSection( ParticleType, KineticEnergy,
>> 351 (*theElementVector)[Ielem]->GetZ(),
>> 352 ElectronEnergyCut,PositronEnergyCut );
114 353
115 theParticle = part; << 354 PartialSumSigma[Imate]->push_back(SIGMA);
>> 355 }
>> 356 }
>> 357
>> 358 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
116 359
117 G4VEmModel* mod = EmModel(0); << 360 G4double G4MuPairProduction::ComputeMicroscopicCrossSection(
118 if(nullptr == mod) { << 361 const G4ParticleDefinition* ParticleType,
119 lowestKinEnergy = std::max(lowestKinEnergy << 362 G4double KineticEnergy,
120 auto ptr = new G4MuPairProductionModel(par << 363 G4double AtomicNumber,
121 ptr->SetLowestKineticEnergy(lowestKinEnerg << 364 G4double ElectronEnergyCut,
122 mod = ptr; << 365 G4double PositronEnergyCut)
123 SetEmModel(mod); << 366
>> 367 {
>> 368 static const G4double
>> 369 xgi[] ={ 0.0199,0.1017,0.2372,0.4083,0.5917,0.7628,0.8983,0.9801 };
>> 370 static const G4double
>> 371 wgi[] ={ 0.0506,0.1112,0.1569,0.1813,0.1813,0.1569,0.1112,0.0506 };
>> 372 static const G4double ak1=6.9 ;
>> 373 static const G4double ak2=1.0 ;
>> 374
>> 375 static const G4double sqrte = sqrt(exp(1.)) ;
>> 376 G4double z13 = exp(log(AtomicNumber)/3.) ;
>> 377
>> 378 G4double CrossSection = 0.0 ;
>> 379
>> 380 if ( AtomicNumber < 1. ) return CrossSection;
>> 381
>> 382 G4double CutInPairEnergy = ElectronEnergyCut+PositronEnergyCut
>> 383 +2.*electron_mass_c2 ;
>> 384
>> 385 if( CutInPairEnergy < 4.*electron_mass_c2 )
>> 386 CutInPairEnergy = 4.*electron_mass_c2 ;
>> 387
>> 388 G4double particleMass = ParticleType->GetPDGMass();
>> 389 G4double MaxPairEnergy = KineticEnergy+particleMass*(1.-0.75*sqrte*z13) ;
>> 390 if( CutInPairEnergy >= MaxPairEnergy ) return CrossSection ;
>> 391
>> 392 G4double aaa,bbb,hhh,x,epln,ep ;
>> 393 G4int kkk ;
>> 394 // calculate the total cross section
>> 395 // numerical integration in log(PairEnergy)
>> 396 aaa = log(CutInPairEnergy) ;
>> 397 bbb = log(MaxPairEnergy) ;
>> 398 kkk = int((bbb-aaa)/ak1+ak2) ;
>> 399 hhh = (bbb-aaa)/kkk ;
>> 400 for (G4int l=0 ; l<kkk; l++)
>> 401 {
>> 402 x = aaa+hhh*l ;
>> 403 for (G4int ll=0; ll<8; ll++)
>> 404 {
>> 405 epln = x+xgi[ll]*hhh;
>> 406 ep = exp(epln) ;
>> 407 CrossSection += wgi[ll]*ep*ComputeDMicroscopicCrossSection(ParticleType,
>> 408 KineticEnergy,AtomicNumber,
>> 409 ep) ;
>> 410 }
124 } 411 }
>> 412 CrossSection *= hhh ;
>> 413
>> 414 if (CrossSection < 0.) CrossSection = 0.;
125 415
126 G4VEmFluctuationModel* fm = nullptr; << 416 return CrossSection;
127 G4EmParameters* param = G4EmParameters::Inst <<
128 mod->SetLowEnergyLimit(param->MinKinEnergy() <<
129 mod->SetHighEnergyLimit(param->MaxKinEnergy( <<
130 mod->SetSecondaryThreshold(param->MuHadBrems <<
131 AddEmModel(1, mod, fm); <<
132 } 417 }
133 418
134 //....oooOO0OOooo........oooOO0OOooo........oo << 419 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
135 420
136 void G4MuPairProduction::StreamProcessInfo(std << 421 void G4MuPairProduction::MakeSamplingTables(
>> 422 const G4ParticleDefinition* ParticleType)
137 { 423 {
138 G4ElementData* ed = EmModel()->GetElementDat << 424 G4int nbin;
139 if(ed) { << 425 G4double AtomicNumber,KineticEnergy ;
140 for(G4int Z=1; Z<93; ++Z) { << 426 G4double c,y,ymin,ymax,dy,yy,dx,x,ep ;
141 G4Physics2DVector* pv = ed->GetElement2D << 427
142 if(pv) { << 428 static const G4double sqrte = sqrt(exp(1.)) ;
143 out << " Sampling table " << pv-> << 429 G4double particleMass = ParticleType->GetPDGMass();
144 << "x" << pv->GetLengthX() << "; from " << 430
145 << std::exp(pv->GetY(0))/GeV << " GeV to << 431 for (G4int iz=0; iz<nzdat; iz++)
146 << std::exp(pv->GetY(pv->GetLengthY()-1) << 432 {
147 << " TeV " << G4endl; << 433 AtomicNumber = zdat[iz];
148 break; << 434 G4double z13 = exp(log(AtomicNumber)/3.) ;
>> 435
>> 436 for (G4int it=0; it<ntdat; it++)
>> 437 {
>> 438 KineticEnergy = tdat[it];
>> 439 G4double MaxPairEnergy = KineticEnergy+particleMass*(1.-0.75*sqrte*z13) ;
>> 440
>> 441 G4double CrossSection = 0.0 ;
>> 442
>> 443 //G4int NbofIntervals ;
>> 444 c = log(MaxPairEnergy/MinPairEnergy) ;
>> 445
>> 446 ymin = -5. ;
>> 447 ymax = 0. ;
>> 448 dy = (ymax-ymin)/NBIN ;
>> 449 nbin=-1;
>> 450 y = ymin - 0.5*dy ;
>> 451 yy = ymin - dy ;
>> 452 for (G4int i=0 ; i<NBIN; i++)
>> 453 {
>> 454 y += dy ;
>> 455 x = exp(y) ;
>> 456 yy += dy ;
>> 457 dx = exp(yy+dy)-exp(yy) ;
>> 458 ep = MinPairEnergy*exp(c*x) ;
>> 459 CrossSection += ep*dx*ComputeDMicroscopicCrossSection(ParticleType,
>> 460 KineticEnergy,AtomicNumber,ep);
>> 461 if(nbin<NBIN)
>> 462 {
>> 463 nbin += 1 ;
>> 464 ya[nbin]=y ;
>> 465 proba[iz][it][nbin] = CrossSection ;
>> 466 }
>> 467 }
>> 468 ya[NBIN]=0. ;
>> 469
>> 470 if(CrossSection > 0.)
>> 471 {
>> 472 for(G4int ib=0; ib<=nbin; ib++)
>> 473 {
>> 474 proba[iz][it][ib] /= CrossSection ;
>> 475
>> 476 }
149 } 477 }
150 } 478 }
151 } 479 }
>> 480 }
>> 481
>> 482 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 483
>> 484 G4double G4MuPairProduction::ComputeDDMicroscopicCrossSection(
>> 485 const G4ParticleDefinition* ParticleType,
>> 486 G4double KineticEnergy, G4double AtomicNumber,
>> 487 G4double PairEnergy,G4double asymmetry)
>> 488 // Calculates the double differential (DD) microscopic cross section
>> 489 // using the cross section formula of R.P. Kokoulin (18/01/98)
>> 490 {
>> 491 static const G4double sqrte = sqrt(exp(1.)) ;
>> 492
>> 493 G4double bbbtf= 183. ;
>> 494 G4double bbbh = 202.4 ;
>> 495 G4double g1tf = 1.95e-5 ;
>> 496 G4double g2tf = 5.3e-5 ;
>> 497 G4double g1h = 4.4e-5 ;
>> 498 G4double g2h = 4.8e-5 ;
>> 499
>> 500 G4double particleMass = ParticleType->GetPDGMass();
>> 501 G4double massratio = particleMass/electron_mass_c2 ;
>> 502 G4double massratio2 = massratio*massratio ;
>> 503 G4double TotalEnergy = KineticEnergy + particleMass ;
>> 504 G4double z13 = exp(log(AtomicNumber)/3.) ;
>> 505 G4double z23 = z13*z13 ;
>> 506 G4double EnergyLoss = TotalEnergy - PairEnergy ;
>> 507
>> 508 G4double c3 = 3.*sqrte*particleMass/4. ;
>> 509
>> 510 G4double DDCrossSection = 0. ;
>> 511
>> 512 if(EnergyLoss <= c3*z13)
>> 513 return DDCrossSection ;
>> 514
>> 515 G4double c7 = 4.*electron_mass_c2 ;
>> 516 G4double c8 = 6.*particleMass*particleMass ;
>> 517 G4double alf = c7/PairEnergy ;
>> 518 G4double a3 = 1. - alf ;
>> 519
>> 520 if(a3 <= 0.)
>> 521 return DDCrossSection ;
>> 522
>> 523 // zeta calculation
>> 524 G4double bbb,g1,g2,zeta1,zeta2,zeta,z2 ;
>> 525 if( AtomicNumber < 1.5 )
>> 526 {
>> 527 bbb = bbbh ;
>> 528 g1 = g1h ;
>> 529 g2 = g2h ;
>> 530 }
>> 531 else
>> 532 {
>> 533 bbb = bbbtf ;
>> 534 g1 = g1tf ;
>> 535 g2 = g2tf ;
>> 536 }
>> 537 zeta1 = 0.073 * log(TotalEnergy/(particleMass+g1*z23*TotalEnergy))-0.26 ;
>> 538 if( zeta1 > 0.)
>> 539 {
>> 540 zeta2 = 0.058*log(TotalEnergy/(particleMass+g2*z13*TotalEnergy))-0.14 ;
>> 541 zeta = zeta1/zeta2 ;
>> 542 }
>> 543 else
>> 544 {
>> 545 zeta = 0. ;
>> 546 }
>> 547
>> 548 z2 = AtomicNumber*(AtomicNumber+zeta) ;
>> 549
>> 550 G4double screen0 = 2.*electron_mass_c2*sqrte*bbb/(z13*PairEnergy) ;
>> 551 G4double a0 = TotalEnergy*EnergyLoss ;
>> 552 G4double a1 = PairEnergy*PairEnergy/a0 ;
>> 553 G4double bet = 0.5*a1 ;
>> 554 G4double xi0 = 0.25*massratio2*a1 ;
>> 555 G4double del = c8/a0 ;
>> 556
>> 557 G4double romin = 0. ;
>> 558 G4double romax = (1.-del)*sqrt(1.-c7/PairEnergy) ;
>> 559
>> 560 if((asymmetry < romin) || (asymmetry > romax))
>> 561 return DDCrossSection ;
>> 562
>> 563 G4double a4 = 1.-asymmetry ;
>> 564 G4double a5 = a4*(2.-a4) ;
>> 565 G4double a6 = 1.-a5 ;
>> 566 G4double a7 = 1.+a6 ;
>> 567 G4double a9 = 3.+a6 ;
>> 568 G4double xi = xi0*a5 ;
>> 569 G4double xii = 1./xi ;
>> 570 G4double xi1 = 1.+xi ;
>> 571 G4double screen = screen0*xi1/a5 ;
>> 572
>> 573 G4double yeu = 5.-a6+4.*bet*a7 ;
>> 574 G4double yed = 2.*(1.+3.*bet)*log(3.+xii)-a6-a1*(2.-a6) ;
>> 575 G4double yel = 1.+yeu/yed ;
>> 576 G4double ale=log(bbb/z13*sqrt(xi1*yel)/(1.+screen*yel)) ;
>> 577 G4double cre = 0.5*log(1.+2.25/(massratio2*z23)*xi1*yel) ;
>> 578 G4double be ;
>> 579 if(xi <= 1.e3)
>> 580 be = ((2.+a6)*(1.+bet)+xi*a9)*log(1.+xii)+(a5-bet)/xi1-a9;
>> 581 else
>> 582 be = (3.-a6+a1*a7)/(2.+xi) ;
>> 583 G4double fe = (ale-cre)*be ;
>> 584 if( fe < 0.)
>> 585 fe = 0. ;
>> 586
>> 587 G4double ymu = 4.+a6 +3.*bet*a7 ;
>> 588 G4double ymd = a7*(1.5+a1)*log(3.+xi)+1.-1.5*a6 ;
>> 589 G4double ym1 = 1.+ymu/ymd ;
>> 590 G4double alm_crm = log(bbb*massratio/(1.5*z23*(1.+screen*ym1))) ;
>> 591 G4double a10,bm ;
>> 592 if( xi >= 1.e-3)
>> 593 {
>> 594 a10 = (1.+a1)*a5 ;
>> 595 bm = (a7*(1.+1.5*bet)-a10*xii)*log(xi1)+xi*(a5-bet)/xi1+a10 ;
>> 596 }
>> 597 else
>> 598 bm = (5.-a6+bet*a9)*(xi/2.) ;
>> 599 G4double fm = alm_crm*bm ;
>> 600 if( fm < 0.)
>> 601 fm = 0. ;
>> 602
>> 603 DDCrossSection = (fe+fm/massratio2) ;
>> 604
>> 605 DDCrossSection *= 4.*fine_structure_const*fine_structure_const
>> 606 *classic_electr_radius*classic_electr_radius/(3.*pi) ;
>> 607
>> 608 DDCrossSection *= z2*EnergyLoss/(TotalEnergy*PairEnergy) ;
>> 609
>> 610
>> 611 return DDCrossSection ;
>> 612
>> 613 }
>> 614
>> 615 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 616
>> 617 G4double G4MuPairProduction::GetDMicroscopicCrossSection(
>> 618 const G4ParticleDefinition* ParticleType,
>> 619 G4double KineticEnergy, G4double AtomicNumber,
>> 620 G4double PairEnergy)
>> 621 {
>> 622 return ComputeDMicroscopicCrossSection(ParticleType,KineticEnergy,
>> 623 AtomicNumber,PairEnergy) ;
>> 624 }
>> 625
>> 626 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 627
>> 628 G4double G4MuPairProduction::ComputeDMicroscopicCrossSection(
>> 629 const G4ParticleDefinition* ParticleType,
>> 630 G4double KineticEnergy, G4double AtomicNumber,
>> 631 G4double PairEnergy)
>> 632 // Calculates the differential (D) microscopic cross section
>> 633 // using the cross section formula of R.P. Kokoulin (18/01/98)
>> 634 {
>> 635
>> 636 static const G4double
>> 637 xgi[] ={ 0.0199,0.1017,0.2372,0.4083,0.5917,0.7628,0.8983,0.9801 };
>> 638
>> 639 static const G4double
>> 640 wgi[] ={ 0.0506,0.1112,0.1569,0.1813,0.1813,0.1569,0.1112,0.0506 };
>> 641
>> 642 G4double DCrossSection = 0. ;
>> 643
>> 644 G4double particleMass = ParticleType->GetPDGMass();
>> 645 G4double TotalEnergy = KineticEnergy + particleMass;
>> 646 G4double EnergyLoss = TotalEnergy - PairEnergy ;
>> 647 G4double a = 6.*particleMass*particleMass/(TotalEnergy*EnergyLoss) ;
>> 648 G4double b = 4.*electron_mass_c2/PairEnergy ;
>> 649
>> 650 if((b+2.*a*(1.-b))/(1.+(1.-a)*sqrt(1.-b)) <= 0.) return DCrossSection ;
>> 651
>> 652 G4double tmn=log((b+2.*a*(1.-b))/(1.+(1.-a)*sqrt(1.-b))) ;
>> 653
>> 654 // G4double DCrossSection = 0. ;
>> 655 G4double ro ;
>> 656 // Gaussian integration in ln(1-ro) ( with 8 points)
>> 657 for (G4int i=0; i<7; i++)
>> 658 {
>> 659 ro = 1.-exp(tmn*xgi[i]) ;
>> 660
>> 661 DCrossSection += (1.-ro)*ComputeDDMicroscopicCrossSection(
>> 662 ParticleType,KineticEnergy,
>> 663 AtomicNumber,PairEnergy,ro)
>> 664 *wgi[i] ;
>> 665 }
>> 666
>> 667 DCrossSection *= -tmn ;
>> 668
>> 669 return DCrossSection ;
>> 670
>> 671 }
>> 672
>> 673 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 674
>> 675 G4VParticleChange* G4MuPairProduction::PostStepDoIt(const G4Track& trackData,
>> 676 const G4Step& stepData)
>> 677 {
>> 678 static const G4double esq = sqrt(exp(1.));
>> 679
>> 680 aParticleChange.Initialize(trackData);
>> 681 G4Material* aMaterial=trackData.GetMaterial() ;
>> 682 const G4DynamicParticle* aDynamicParticle=trackData.GetDynamicParticle();
>> 683 G4double KineticEnergy = aDynamicParticle->GetKineticEnergy();
>> 684 G4double particleMass = aDynamicParticle->GetDefinition()->GetPDGMass();
>> 685 G4ParticleMomentum ParticleDirection =
>> 686 aDynamicParticle->GetMomentumDirection();
>> 687
>> 688 // e-e+ cut in this material
>> 689 G4double ElectronEnergyCut = electron_mass_c2+
>> 690 G4Electron::Electron()->GetEnergyThreshold(aMaterial);
>> 691 G4double PositronEnergyCut = electron_mass_c2+
>> 692 G4Positron::Positron()->GetEnergyThreshold(aMaterial);
>> 693 G4double CutInPairEnergy = ElectronEnergyCut + PositronEnergyCut ;
>> 694
>> 695 if (CutInPairEnergy < MinPairEnergy) CutInPairEnergy = MinPairEnergy ;
>> 696
>> 697 // check against insufficient energy
>> 698 if(KineticEnergy < CutInPairEnergy )
>> 699 return G4VContinuousDiscreteProcess::PostStepDoIt(trackData,stepData);
>> 700
>> 701 // select randomly one element constituing the material
>> 702 G4Element* anElement = SelectRandomAtom(aMaterial);
>> 703
>> 704 // limits of the energy sampling
>> 705 G4double TotalEnergy = KineticEnergy + particleMass ;
>> 706 //G4double TotalMomentum = sqrt(KineticEnergy*(TotalEnergy+particleMass)) ;
>> 707 G4double Z3 = anElement->GetIonisation()->GetZ3() ;
>> 708 G4double MaxPairEnergy = TotalEnergy-0.75*esq*particleMass*Z3 ;
>> 709
>> 710 if(MinPairEnergy >= MaxPairEnergy)
>> 711 return G4VContinuousDiscreteProcess::PostStepDoIt(trackData,stepData);
>> 712
>> 713 // sample e-e+ energy, pair energy first
>> 714 G4double PairEnergy,xc,x,yc,y ;
>> 715 // G4int iZ,iT;
>> 716 G4int iy ;
>> 717
>> 718 // select sampling table ;
>> 719 G4double lnZ = log(anElement->GetZ()) ;
>> 720 G4double delmin = 1.e10 ;
>> 721 G4double del ;
>> 722 G4int izz = 0;
>> 723 G4int itt = 0;
>> 724 G4int NBINminus1 = NBIN-1;
>> 725 for (G4int iz=0; iz<nzdat; iz++)
>> 726 {
>> 727 del = abs(lnZ-log(zdat[iz])) ;
>> 728 if(del<delmin)
>> 729 {
>> 730 delmin=del ;
>> 731 izz=iz ;
>> 732 }
>> 733 }
>> 734 delmin = 1.e10 ;
>> 735 for (G4int it=0; it<ntdat; it++)
>> 736 {
>> 737 del = abs(log(KineticEnergy)-log(tdat[it])) ;
>> 738 if(del<delmin)
>> 739 {
>> 740 delmin=del;
>> 741 itt=it ;
>> 742 }
>> 743 }
>> 744
>> 745 if( CutInPairEnergy <= MinPairEnergy)
>> 746 iy = 0 ;
>> 747 else
>> 748 {
>> 749 xc = log(CutInPairEnergy/MinPairEnergy)/log(MaxPairEnergy/MinPairEnergy) ;
>> 750 yc = log(xc) ;
>> 751
>> 752 iy = -1 ;
>> 753 do {
>> 754 iy += 1 ;
>> 755 } while ((ya[iy] < yc )&&(iy < NBINminus1)) ;
>> 756 }
>> 757
>> 758 G4double norm = proba[izz][itt][iy] ;
>> 759
>> 760 G4double r = norm+G4UniformRand()*(1.-norm) ;
>> 761
>> 762 iy -= 1 ;
>> 763 do {
>> 764 iy += 1 ;
>> 765 } while ((proba[izz][itt][iy] < r)&&(iy < NBINminus1)) ;
>> 766
>> 767 //sampling is uniformly in y in the bin
>> 768 if( iy < NBIN )
>> 769 y = ya[iy] + G4UniformRand() * ( ya[iy+1] - ya[iy]) ;
>> 770 else
>> 771 y = ya[iy] ;
>> 772
>> 773 x = exp(y) ;
>> 774
>> 775 PairEnergy = MinPairEnergy*exp(x*log(MaxPairEnergy/MinPairEnergy)) ;
>> 776
>> 777 // sample r=(E+-E-)/PairEnergy ( uniformly .....)
>> 778 G4double rmax = (1.-6.*particleMass*particleMass/(TotalEnergy*
>> 779 (TotalEnergy-PairEnergy)))
>> 780 *sqrt(1.-MinPairEnergy/PairEnergy) ;
>> 781 r = rmax * (-1.+2.*G4UniformRand()) ;
>> 782
>> 783 // compute energies from PairEnergy,r
>> 784 G4double ElectronEnergy=(1.-r)*PairEnergy/2. ;
>> 785 G4double PositronEnergy=(1.+r)*PairEnergy/2. ;
>> 786
>> 787 // angles of the emitted particles ( Z - axis along the parent particle)
>> 788 // (mean theta for the moment)
>> 789 G4double Teta = electron_mass_c2/TotalEnergy ;
>> 790
>> 791 G4double Phi = twopi * G4UniformRand() ;
>> 792 G4double dirx = sin(Teta)*cos(Phi) , diry = sin(Teta)*sin(Phi) ,
>> 793 dirz = cos(Teta) ;
>> 794
>> 795 G4double LocalEnerDeposit = 0. ;
>> 796 G4int numberofsecondaries = 1 ;
>> 797 G4int flagelectron = 0 ;
>> 798 G4int flagpositron = 1 ;
>> 799 G4DynamicParticle* aParticle1 = 0;
>> 800 G4DynamicParticle* aParticle2 = 0;
>> 801 G4double ElectronMomentum , PositronMomentum ;
>> 802 //G4double finalPx,finalPy,finalPz ;
>> 803
>> 804 G4double ElectKineEnergy = ElectronEnergy - electron_mass_c2 ;
>> 805
>> 806 if((ElectKineEnergy > ElectronEnergyCut) ||
>> 807 (G4EnergyLossTables::GetRange(
>> 808 G4Electron::Electron(),ElectKineEnergy,aMaterial) >=
>> 809 stepData.GetPostStepPoint()->GetSafety()))
>> 810 {
>> 811 numberofsecondaries += 1 ;
>> 812 flagelectron = 1 ;
>> 813 ElectronMomentum = sqrt(ElectKineEnergy*
>> 814 (ElectronEnergy+electron_mass_c2));
>> 815 G4ThreeVector ElectDirection ( dirx, diry, dirz );
>> 816 ElectDirection.rotateUz(ParticleDirection);
>> 817
>> 818 // create G4DynamicParticle object for the particle1
>> 819 aParticle1= new G4DynamicParticle (G4Electron::Electron(),
>> 820 ElectDirection, ElectKineEnergy);
>> 821 }
>> 822 else
>> 823 { LocalEnerDeposit += ElectKineEnergy ; }
>> 824
>> 825 // the e+ is always created (even with Ekine=0) for further annihilation.
>> 826
>> 827 G4double PositKineEnergy = PositronEnergy - electron_mass_c2 ;
>> 828 PositronMomentum = sqrt(PositKineEnergy*(PositronEnergy+electron_mass_c2));
>> 829
>> 830 if((PositKineEnergy < PositronEnergyCut) &&
>> 831 (G4EnergyLossTables::GetRange(
>> 832 G4Positron::Positron(),PositKineEnergy,aMaterial) <=
>> 833 stepData.GetPostStepPoint()->GetSafety()))
>> 834 {
>> 835 LocalEnerDeposit += PositKineEnergy ;
>> 836 PositKineEnergy = 0. ;
>> 837 }
>> 838 G4ThreeVector PositDirection ( -dirx, -diry, dirz );
>> 839 PositDirection.rotateUz(ParticleDirection);
>> 840
>> 841 // create G4DynamicParticle object for the particle2
>> 842 aParticle2= new G4DynamicParticle (G4Positron::Positron(),
>> 843 PositDirection, PositKineEnergy);
>> 844
>> 845 // fill particle change and update initial particle
>> 846 aParticleChange.SetNumberOfSecondaries(numberofsecondaries) ;
>> 847 if(flagelectron==1)
>> 848 aParticleChange.AddSecondary( aParticle1 ) ;
>> 849 if(flagpositron==1)
>> 850 aParticleChange.AddSecondary( aParticle2 ) ;
>> 851
>> 852 G4double NewKinEnergy = KineticEnergy - ElectronEnergy - PositronEnergy ;
>> 853 //G4double finalMomentum=sqrt(NewKinEnergy*(NewKinEnergy+2.*particleMass));
>> 854
>> 855 aParticleChange.SetMomentumChange( ParticleDirection );
>> 856
>> 857 G4double KinEnergyCut = (aDynamicParticle->GetDefinition()->
>> 858 GetEnergyCuts())[aMaterial->GetIndex()];
>> 859
>> 860 if (NewKinEnergy > KinEnergyCut)
>> 861 {
>> 862 aParticleChange.SetEnergyChange( NewKinEnergy );
>> 863 }
>> 864 else
>> 865 {
>> 866 aParticleChange.SetEnergyChange(0.);
>> 867 LocalEnerDeposit += NewKinEnergy ;
>> 868 aParticleChange.SetStatusChange(fStopButAlive);
>> 869 }
>> 870
>> 871 aParticleChange.SetLocalEnergyDeposit( LocalEnerDeposit ) ;
>> 872
>> 873 return G4VContinuousDiscreteProcess::PostStepDoIt(trackData,stepData);
>> 874 }
>> 875
>> 876 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 877
>> 878 G4Element* G4MuPairProduction::SelectRandomAtom(G4Material* aMaterial) const
>> 879 {
>> 880 // select randomly 1 element within the material
>> 881
>> 882 const G4int Index = aMaterial->GetIndex();
>> 883 const G4int NumberOfElements = aMaterial->GetNumberOfElements();
>> 884 const G4ElementVector* theElementVector = aMaterial->GetElementVector();
>> 885
>> 886 G4double rval = G4UniformRand()*((*PartialSumSigma[Index])
>> 887 [NumberOfElements-1]);
>> 888
>> 889 for ( G4int i=0; i < NumberOfElements; i++ )
>> 890 {
>> 891 if (rval <= (*PartialSumSigma[Index])[i]) return ((*theElementVector)[i]);
>> 892 }
>> 893 G4cout << " WARNING !!! - The Material '"<< aMaterial->GetName()
>> 894 << "' has no elements, NULL pointer returned." << G4endl;
>> 895 return NULL;
152 } 896 }
153 897
154 //....oooOO0OOooo........oooOO0OOooo........oo << 898 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
155 899
156 void G4MuPairProduction::ProcessDescription(st << 900 G4bool G4MuPairProduction::StorePhysicsTable(G4ParticleDefinition* particle,
>> 901 const G4String& directory,
>> 902 G4bool ascii)
157 { 903 {
158 out << " Electron-positron pair production << 904 G4String filename;
159 G4VEnergyLossProcess::ProcessDescription(out << 905
>> 906 // store stopping power table
>> 907 filename = GetPhysicsTableFileName(particle,directory,"StoppingPower",ascii);
>> 908 if ( !theLossTable->StorePhysicsTable(filename, ascii) ){
>> 909 G4cout << " FAIL theLossTable->StorePhysicsTable in " << filename
>> 910 << G4endl;
>> 911 return false;
>> 912 }
>> 913 // store mean free path table
>> 914 filename = GetPhysicsTableFileName(particle,directory,"MeanFreePath",ascii);
>> 915 if ( !theMeanFreePathTable->StorePhysicsTable(filename, ascii) ){
>> 916 G4cout << " FAIL theMeanFreePathTable->StorePhysicsTable in " << filename
>> 917 << G4endl;
>> 918 return false;
>> 919 }
>> 920
>> 921 // store PartialSumSigma table (G4OrderedTable)
>> 922 filename = GetPhysicsTableFileName(particle,directory,"PartSumSigma",ascii);
>> 923 if ( !PartialSumSigma.Store(filename, ascii) ){
>> 924 G4cout << " FAIL PartialSumSigma.store in " << filename
>> 925 << G4endl;
>> 926 return false;
>> 927 }
>> 928 G4cout << GetProcessName() << "for " << particle->GetParticleName()
>> 929 << ": Success to store the PhysicsTables in "
>> 930 << directory << G4endl;
>> 931
>> 932 return true;
160 } 933 }
161 934
162 //....oooOO0OOooo........oooOO0OOooo........oo << 935 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 936
>> 937 G4bool G4MuPairProduction::RetrievePhysicsTable(G4ParticleDefinition* particle,
>> 938 const G4String& directory,
>> 939 G4bool ascii)
>> 940 {
>> 941 // delete theLossTable and theMeanFreePathTable
>> 942 if (theLossTable != 0) {
>> 943 theLossTable->clearAndDestroy();
>> 944 delete theLossTable;
>> 945 }
>> 946 if (theMeanFreePathTable != 0) {
>> 947 theMeanFreePathTable->clearAndDestroy();
>> 948 delete theMeanFreePathTable;
>> 949 }
>> 950 if (&PartialSumSigma != 0) PartialSumSigma.clear();
>> 951
>> 952 // get bining from EnergyLoss
>> 953 LowestKineticEnergy = GetLowerBoundEloss();
>> 954 HighestKineticEnergy = GetUpperBoundEloss();
>> 955 TotBin = GetNbinEloss();
>> 956
>> 957 G4String filename;
>> 958
>> 959 // retreive stopping power table
>> 960 filename = GetPhysicsTableFileName(particle,directory,"StoppingPower",ascii);
>> 961 theLossTable = new G4PhysicsTable(G4Material::GetNumberOfMaterials());
>> 962 if ( !theLossTable->RetrievePhysicsTable(filename, ascii) ){
>> 963 G4cout << " FAIL theLossTable0->RetrievePhysicsTable in " << filename
>> 964 << G4endl;
>> 965 return false;
>> 966 }
>> 967
>> 968 // retreive mean free path table
>> 969 filename = GetPhysicsTableFileName(particle,directory,"MeanFreePath",ascii);
>> 970 theMeanFreePathTable = new G4PhysicsTable(G4Material::GetNumberOfMaterials());
>> 971 if ( !theMeanFreePathTable->RetrievePhysicsTable(filename, ascii) ){
>> 972 G4cout << " FAIL theMeanFreePathTable->RetrievePhysicsTable in " << filename
>> 973 << G4endl;
>> 974 return false;
>> 975 }
>> 976
>> 977 // retrieve PartialSumSigma table (G4OrderedTable)
>> 978 filename = GetPhysicsTableFileName(particle,directory,"PartSumSigma",ascii);
>> 979 if ( !PartialSumSigma.Retrieve(filename, ascii) ){
>> 980 G4cout << " FAIL PartialSumSigma.retrieve in " << filename
>> 981 << G4endl;
>> 982 return false;
>> 983 }
>> 984
>> 985 G4cout << GetProcessName() << "for " << particle->GetParticleName()
>> 986 << ": Success to retrieve the PhysicsTables from "
>> 987 << directory << G4endl;
>> 988
>> 989 if (particle->GetPDGCharge() < 0.)
>> 990 {
>> 991 RecorderOfmuminusProcess[CounterOfmuminusProcess] = (*this).theLossTable;
>> 992 CounterOfmuminusProcess++;
>> 993 }
>> 994 else
>> 995 {
>> 996 RecorderOfmuplusProcess[CounterOfmuplusProcess] = (*this).theLossTable;
>> 997 CounterOfmuplusProcess++;
>> 998 }
>> 999
>> 1000 MakeSamplingTables(particle);
>> 1001
>> 1002 G4VMuEnergyLoss::BuildDEDXTable(*particle);
>> 1003
>> 1004 return true;
>> 1005 }
>> 1006
>> 1007 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 1008
>> 1009 void G4MuPairProduction::PrintInfoDefinition()
>> 1010 {
>> 1011 G4String comments = "theoretical cross sections \n ";
>> 1012 comments += " Good description up to 1000 PeV.";
>> 1013
>> 1014 G4cout << G4endl << GetProcessName() << ": " << comments
>> 1015 << "\n PhysicsTables from " << G4BestUnit(LowerBoundLambda,
>> 1016 "Energy")
>> 1017 << " to " << G4BestUnit(UpperBoundLambda,"Energy")
>> 1018 << " in " << NbinLambda << " bins. \n";
>> 1019 }
>> 1020
>> 1021 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 1022
163 1023