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27 // ------------------------------------------- 27 // -------------------------------------------------------------------
28 // 28 //
29 // GEANT4 Class file 29 // GEANT4 Class file
30 // 30 //
31 // 31 //
32 // File name: G4ePairProduction 32 // File name: G4ePairProduction
33 // 33 //
34 // Author: Vladimir Ivanchenko 34 // Author: Vladimir Ivanchenko
35 // 35 //
36 // Creation date: 17.03.2016 36 // Creation date: 17.03.2016
37 // 37 //
38 // Modifications: 38 // Modifications:
39 // 39 //
40 // ------------------------------------------- 40 // -------------------------------------------------------------------
41 // 41 //
42 //....oooOO0OOooo........oooOO0OOooo........oo 42 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
43 //....oooOO0OOooo........oooOO0OOooo........oo 43 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
44 44
45 #include "G4ePairProduction.hh" 45 #include "G4ePairProduction.hh"
46 #include "G4SystemOfUnits.hh" 46 #include "G4SystemOfUnits.hh"
47 #include "G4Electron.hh" 47 #include "G4Electron.hh"
48 #include "G4Positron.hh" 48 #include "G4Positron.hh"
49 #include "G4VEmModel.hh" 49 #include "G4VEmModel.hh"
50 #include "G4VEmFluctuationModel.hh" 50 #include "G4VEmFluctuationModel.hh"
51 #include "G4MuPairProductionModel.hh" 51 #include "G4MuPairProductionModel.hh"
52 #include "G4ElementData.hh" 52 #include "G4ElementData.hh"
53 #include "G4EmParameters.hh" 53 #include "G4EmParameters.hh"
54 54
55 //....oooOO0OOooo........oooOO0OOooo........oo 55 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
56 56
57 G4ePairProduction::G4ePairProduction(const G4S 57 G4ePairProduction::G4ePairProduction(const G4String& name)
58 : G4VEnergyLossProcess(name), 58 : G4VEnergyLossProcess(name),
59 lowestKinEnergy(100.*CLHEP::MeV) 59 lowestKinEnergy(100.*CLHEP::MeV)
60 { 60 {
61 SetProcessSubType(fPairProdByCharged); 61 SetProcessSubType(fPairProdByCharged);
62 SetSecondaryParticle(G4Positron::Positron()) 62 SetSecondaryParticle(G4Positron::Positron());
63 SetIonisation(false); 63 SetIonisation(false);
64 SetSpline(false); 64 SetSpline(false);
65 } 65 }
66 66
67 //....oooOO0OOooo........oooOO0OOooo........oo 67 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
68 68
69 G4bool G4ePairProduction::IsApplicable(const G 69 G4bool G4ePairProduction::IsApplicable(const G4ParticleDefinition& p)
70 { 70 {
71 return (G4Electron::Electron() == &p || G4Po 71 return (G4Electron::Electron() == &p || G4Positron::Positron() == &p);
72 } 72 }
73 73
74 //....oooOO0OOooo........oooOO0OOooo........oo 74 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
75 75
76 G4double G4ePairProduction::MinPrimaryEnergy(c 76 G4double G4ePairProduction::MinPrimaryEnergy(const G4ParticleDefinition*,
77 const G4Material*, 77 const G4Material*,
78 G4double) 78 G4double)
79 { 79 {
80 return lowestKinEnergy; 80 return lowestKinEnergy;
81 } 81 }
82 82
83 //....oooOO0OOooo........oooOO0OOooo........oo 83 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
84 84
85 void G4ePairProduction::InitialiseEnergyLossPr 85 void G4ePairProduction::InitialiseEnergyLossProcess(
86 const G4ParticleDefin 86 const G4ParticleDefinition* part,
87 const G4ParticleDefinition*) 87 const G4ParticleDefinition*)
88 { 88 {
89 if (!isInitialised) { 89 if (!isInitialised) {
90 isInitialised = true; 90 isInitialised = true;
91 91
92 theParticle = part; 92 theParticle = part;
93 93
94 G4MuPairProductionModel* mod = new G4MuPai 94 G4MuPairProductionModel* mod = new G4MuPairProductionModel(part, "ePairProd");
95 SetEmModel(mod); 95 SetEmModel(mod);
96 96
97 lowestKinEnergy = std::max(lowestKinEnergy 97 lowestKinEnergy = std::max(lowestKinEnergy, part->GetPDGMass()*8.0);
98 mod->SetLowestKineticEnergy(lowestKinEnerg 98 mod->SetLowestKineticEnergy(lowestKinEnergy);
99 99
100 G4VEmFluctuationModel* fm = nullptr; 100 G4VEmFluctuationModel* fm = nullptr;
101 G4EmParameters* param = G4EmParameters::In 101 G4EmParameters* param = G4EmParameters::Instance();
102 mod->SetLowEnergyLimit(param->MinKinEnergy 102 mod->SetLowEnergyLimit(param->MinKinEnergy());
103 mod->SetHighEnergyLimit(param->MaxKinEnerg 103 mod->SetHighEnergyLimit(param->MaxKinEnergy());
104 AddEmModel(1, mod, fm); 104 AddEmModel(1, mod, fm);
105 } 105 }
106 } 106 }
107 107
108 //....oooOO0OOooo........oooOO0OOooo........oo 108 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
109 109
110 void G4ePairProduction::StreamProcessInfo(std: 110 void G4ePairProduction::StreamProcessInfo(std::ostream& out) const
111 { 111 {
112 G4ElementData* ed = EmModel(0)->GetElementDa 112 G4ElementData* ed = EmModel(0)->GetElementData();
113 if(ed) { 113 if(ed) {
114 for(G4int Z=1; Z<93; ++Z) { 114 for(G4int Z=1; Z<93; ++Z) {
115 G4Physics2DVector* pv = ed->GetElement2D 115 G4Physics2DVector* pv = ed->GetElement2DData(Z);
116 if(pv) { 116 if(pv) {
117 out << " Sampling table " << pv-> 117 out << " Sampling table " << pv->GetLengthY()
118 << "x" << pv->GetLengthX() << "; from " 118 << "x" << pv->GetLengthX() << "; from "
119 << G4Exp(pv->GetY(0))/GeV << " GeV to " 119 << G4Exp(pv->GetY(0))/GeV << " GeV to "
120 << G4Exp(pv->GetY(pv->GetLengthY()-1))/T 120 << G4Exp(pv->GetY(pv->GetLengthY()-1))/TeV
121 << " TeV " << G4endl; 121 << " TeV " << G4endl;
122 break; 122 break;
123 } 123 }
124 } 124 }
125 } 125 }
126 } 126 }
127 127
128 //....oooOO0OOooo........oooOO0OOooo........oo 128 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
129 129
130 void G4ePairProduction::ProcessDescription(std 130 void G4ePairProduction::ProcessDescription(std::ostream& out) const
131 { 131 {
132 out << " Electron-positron pair production 132 out << " Electron-positron pair production by electron or positron";
133 G4VEnergyLossProcess::ProcessDescription(out 133 G4VEnergyLossProcess::ProcessDescription(out);
134 } 134 }
135 135
136 //....oooOO0OOooo........oooOO0OOooo........oo 136 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
137 137