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>> 26 // $Id: G4MuPairProduction.cc 72942 2013-08-14 13:37:37Z gcosmo $
26 // 27 //
27 // ------------------------------------------- 28 // -------------------------------------------------------------------
28 // 29 //
29 // GEANT4 Class file 30 // GEANT4 Class file
30 // 31 //
31 // 32 //
32 // File name: G4MuPairProduction 33 // File name: G4MuPairProduction
33 // 34 //
34 // Author: Laszlo Urban 35 // Author: Laszlo Urban
35 // 36 //
36 // Creation date: 30.05.1998 37 // Creation date: 30.05.1998
37 // 38 //
38 // Modifications: 39 // Modifications:
39 // 40 //
40 // 04-06-98 in DoIt,secondary production condi 41 // 04-06-98 in DoIt,secondary production condition:
41 // range>std::min(threshold,safety) 42 // range>std::min(threshold,safety)
42 // 26-10-98 new stuff from R. Kokoulin + clean 43 // 26-10-98 new stuff from R. Kokoulin + cleanup , L.Urban
43 // 06-05-99 bug fixed , L.Urban 44 // 06-05-99 bug fixed , L.Urban
44 // 10-02-00 modifications+bug fix , new e.m. s 45 // 10-02-00 modifications+bug fix , new e.m. structure, L.Urban
45 // 29-05-01 V.Ivanchenko minor changes to prov 46 // 29-05-01 V.Ivanchenko minor changes to provide ANSI -wall compilation
46 // 10-08-01 new methods Store/Retrieve Physics 47 // 10-08-01 new methods Store/Retrieve PhysicsTable (mma)
47 // 17-09-01 migration of Materials to pure STL 48 // 17-09-01 migration of Materials to pure STL (mma)
48 // 20-09-01 (L.Urban) in ComputeMicroscopicCro 49 // 20-09-01 (L.Urban) in ComputeMicroscopicCrossSection, remove:
49 // if(MaxPairEnergy<CutInPairEnergy) 50 // if(MaxPairEnergy<CutInPairEnergy) MaxPairEnergy=CutInPairEnergy
50 // 26-09-01 completion of store/retrieve Physi 51 // 26-09-01 completion of store/retrieve PhysicsTable
51 // 28-09-01 suppression of theMuonPlus ..etc.. 52 // 28-09-01 suppression of theMuonPlus ..etc..data members (mma)
52 // 29-10-01 all static functions no more inlin 53 // 29-10-01 all static functions no more inlined (mma)
53 // 07-11-01 particleMass becomes a local varia 54 // 07-11-01 particleMass becomes a local variable (mma)
54 // 19-08-02 V.Ivanchenko update to new design 55 // 19-08-02 V.Ivanchenko update to new design
55 // 23-12-02 Change interface in order to move 56 // 23-12-02 Change interface in order to move to cut per region (V.Ivanchenko)
56 // 26-12-02 Secondary production moved to deri 57 // 26-12-02 Secondary production moved to derived classes (V.Ivanchenko)
57 // 13-02-03 SubCutoff regime is assigned to a 58 // 13-02-03 SubCutoff regime is assigned to a region (V.Ivanchenko)
58 // 08-08-03 STD substitute standard (V.Ivanch 59 // 08-08-03 STD substitute standard (V.Ivanchenko)
59 // 27-09-03 e+ set to be a secondary particle 60 // 27-09-03 e+ set to be a secondary particle (V.Ivanchenko)
60 // 12-11-03 G4EnergyLossSTD -> G4EnergyLossPro 61 // 12-11-03 G4EnergyLossSTD -> G4EnergyLossProcess (V.Ivanchenko)
61 // 10-02-04 Add lowestKinEnergy (V.Ivanchenko) 62 // 10-02-04 Add lowestKinEnergy (V.Ivanchenko)
62 // 17-08-04 Utilise mu+ tables for mu- (V.Ivan 63 // 17-08-04 Utilise mu+ tables for mu- (V.Ivanchenko)
63 // 08-11-04 Migration to new interface of Stor 64 // 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko)
64 // 08-04-05 Major optimisation of internal int 65 // 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
65 // 66 //
66 // ------------------------------------------- 67 // -------------------------------------------------------------------
67 // 68 //
68 //....oooOO0OOooo........oooOO0OOooo........oo 69 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
69 //....oooOO0OOooo........oooOO0OOooo........oo 70 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
70 71
71 #include "G4MuPairProduction.hh" 72 #include "G4MuPairProduction.hh"
72 #include "G4SystemOfUnits.hh" 73 #include "G4SystemOfUnits.hh"
73 #include "G4Positron.hh" 74 #include "G4Positron.hh"
74 #include "G4VEmModel.hh" 75 #include "G4VEmModel.hh"
75 #include "G4MuPairProductionModel.hh" 76 #include "G4MuPairProductionModel.hh"
76 #include "G4ElementData.hh" 77 #include "G4ElementData.hh"
77 #include "G4EmParameters.hh" <<
78 78
79 //....oooOO0OOooo........oooOO0OOooo........oo 79 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
80 80
>> 81 using namespace std;
>> 82
81 G4MuPairProduction::G4MuPairProduction(const G 83 G4MuPairProduction::G4MuPairProduction(const G4String& name)
82 : G4VEnergyLossProcess(name), 84 : G4VEnergyLossProcess(name),
83 lowestKinEnergy(0.85*CLHEP::GeV) << 85 theParticle(0),
>> 86 lowestKinEnergy(1.*GeV),
>> 87 isInitialised(false)
84 { 88 {
85 SetProcessSubType(fPairProdByCharged); 89 SetProcessSubType(fPairProdByCharged);
86 SetSecondaryParticle(G4Positron::Positron()) 90 SetSecondaryParticle(G4Positron::Positron());
87 SetIonisation(false); 91 SetIonisation(false);
88 } 92 }
89 93
90 //....oooOO0OOooo........oooOO0OOooo........oo 94 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
91 95
>> 96 G4MuPairProduction::~G4MuPairProduction()
>> 97 {}
>> 98
>> 99 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 100
92 G4bool G4MuPairProduction::IsApplicable(const 101 G4bool G4MuPairProduction::IsApplicable(const G4ParticleDefinition& p)
93 { 102 {
94 return (p.GetPDGCharge() != 0.0); << 103 return (p.GetPDGCharge() != 0.0 && p.GetPDGMass() > 10.0*MeV);
95 } 104 }
96 105
97 //....oooOO0OOooo........oooOO0OOooo........oo 106 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
98 107
99 G4double G4MuPairProduction::MinPrimaryEnergy( 108 G4double G4MuPairProduction::MinPrimaryEnergy(const G4ParticleDefinition*,
100 const G4Material*, 109 const G4Material*,
101 G4double) 110 G4double)
102 { 111 {
103 return lowestKinEnergy; 112 return lowestKinEnergy;
104 } 113 }
105 114
106 //....oooOO0OOooo........oooOO0OOooo........oo 115 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
107 116
108 void G4MuPairProduction::InitialiseEnergyLossP 117 void G4MuPairProduction::InitialiseEnergyLossProcess(
109 const G4ParticleDefin 118 const G4ParticleDefinition* part,
110 const G4ParticleDefinition*) 119 const G4ParticleDefinition*)
111 { 120 {
112 if (isInitialised) { return; } << 121 if (!isInitialised) {
113 isInitialised = true; << 122 isInitialised = true;
114 123
115 theParticle = part; << 124 theParticle = part;
116 125
117 G4VEmModel* mod = EmModel(0); << 126 if (!EmModel()) { SetEmModel(new G4MuPairProductionModel(part)); }
118 if(nullptr == mod) { << 127
119 lowestKinEnergy = std::max(lowestKinEnergy << 128 G4double limit = part->GetPDGMass()*8;
120 auto ptr = new G4MuPairProductionModel(par << 129 if(limit > lowestKinEnergy) { lowestKinEnergy = limit; }
121 ptr->SetLowestKineticEnergy(lowestKinEnerg <<
122 mod = ptr; <<
123 SetEmModel(mod); <<
124 } <<
125 130
126 G4VEmFluctuationModel* fm = nullptr; << 131 G4VEmFluctuationModel* fm = 0;
127 G4EmParameters* param = G4EmParameters::Inst << 132 EmModel()->SetLowEnergyLimit(MinKinEnergy());
128 mod->SetLowEnergyLimit(param->MinKinEnergy() << 133 EmModel()->SetHighEnergyLimit(MaxKinEnergy());
129 mod->SetHighEnergyLimit(param->MaxKinEnergy( << 134 AddEmModel(1, EmModel(), fm);
130 mod->SetSecondaryThreshold(param->MuHadBrems << 135 }
131 AddEmModel(1, mod, fm); <<
132 } 136 }
133 137
134 //....oooOO0OOooo........oooOO0OOooo........oo 138 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
135 139
136 void G4MuPairProduction::StreamProcessInfo(std << 140 void G4MuPairProduction::PrintInfo()
137 { 141 {
138 G4ElementData* ed = EmModel()->GetElementDat 142 G4ElementData* ed = EmModel()->GetElementData();
139 if(ed) { 143 if(ed) {
140 for(G4int Z=1; Z<93; ++Z) { 144 for(G4int Z=1; Z<93; ++Z) {
141 G4Physics2DVector* pv = ed->GetElement2D 145 G4Physics2DVector* pv = ed->GetElement2DData(Z);
142 if(pv) { 146 if(pv) {
143 out << " Sampling table " << pv-> << 147 G4cout << " Sampling table " << pv->GetLengthY()
144 << "x" << pv->GetLengthX() << "; from " << 148 << "x" << pv->GetLengthX() << "; from "
145 << std::exp(pv->GetY(0))/GeV << " GeV to << 149 << exp(pv->GetY(0))/GeV << " GeV to "
146 << std::exp(pv->GetY(pv->GetLengthY()-1) << 150 << exp(pv->GetY(pv->GetLengthY()-1))/TeV
147 << " TeV " << G4endl; << 151 << " TeV " << G4endl;
148 break; 152 break;
149 } 153 }
150 } 154 }
151 } 155 }
152 } 156 }
153 157
154 //....oooOO0OOooo........oooOO0OOooo........oo 158 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
155 159
156 void G4MuPairProduction::ProcessDescription(st <<
157 { <<
158 out << " Electron-positron pair production <<
159 G4VEnergyLossProcess::ProcessDescription(out <<
160 } <<
161 160
162 //....oooOO0OOooo........oooOO0OOooo........oo << 161
>> 162
163 163