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26 // 26 //
27 // ------------------------------------------- 27 // -------------------------------------------------------------------
28 // 28 //
29 // GEANT4 Class file 29 // GEANT4 Class file
30 // 30 //
31 // 31 //
32 // File name: G4MuonToMuonPairProduction 32 // File name: G4MuonToMuonPairProduction
33 // 33 //
34 // Author: Siddharth Yajaman on the bas 34 // Author: Siddharth Yajaman on the base of Vladamir Ivantchenko/Laszlo Urban code
35 // 35 //
36 // Creation date: 12.07.2022 36 // Creation date: 12.07.2022
37 // 37 //
38 // Modifications: 38 // Modifications:
39 // 39 //
40 // 40 //
41 // ------------------------------------------- 41 // -------------------------------------------------------------------
42 // 42 //
43 //....oooOO0OOooo........oooOO0OOooo........oo 43 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
44 //....oooOO0OOooo........oooOO0OOooo........oo 44 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
45 45
46 #include "G4MuonToMuonPairProduction.hh" 46 #include "G4MuonToMuonPairProduction.hh"
47 #include "G4SystemOfUnits.hh" 47 #include "G4SystemOfUnits.hh"
48 #include "G4MuonPlus.hh" 48 #include "G4MuonPlus.hh"
49 #include "G4VEmModel.hh" 49 #include "G4VEmModel.hh"
50 #include "G4MuonToMuonPairProductionModel.hh" 50 #include "G4MuonToMuonPairProductionModel.hh"
51 #include "G4ElementData.hh" 51 #include "G4ElementData.hh"
52 #include "G4EmParameters.hh" 52 #include "G4EmParameters.hh"
53 53
54 //....oooOO0OOooo........oooOO0OOooo........oo 54 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
55 55
56 G4MuonToMuonPairProduction::G4MuonToMuonPairPr 56 G4MuonToMuonPairProduction::G4MuonToMuonPairProduction(const G4String& name)
57 : G4MuPairProduction(name) 57 : G4MuPairProduction(name)
58 { 58 {
59 SetProcessSubType(49); 59 SetProcessSubType(49);
60 SetSecondaryParticle(G4MuonPlus::MuonPlus()) 60 SetSecondaryParticle(G4MuonPlus::MuonPlus());
61 } 61 }
62 62
63 //....oooOO0OOooo........oooOO0OOooo........oo 63 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
64 64
65 void G4MuonToMuonPairProduction::InitialiseEne 65 void G4MuonToMuonPairProduction::InitialiseEnergyLossProcess(
66 const G4ParticleDefin 66 const G4ParticleDefinition* part,
67 const G4ParticleDefinition*) 67 const G4ParticleDefinition*)
68 { 68 {
69 if (isInitialised) { return; } 69 if (isInitialised) { return; }
70 isInitialised = true; 70 isInitialised = true;
71 71
72 theParticle = part; 72 theParticle = part;
73 lowestKinEnergy = std::max(lowestKinEnergy, 73 lowestKinEnergy = std::max(lowestKinEnergy, part->GetPDGMass()*8.0);
74 74
75 G4VEmModel* mod = EmModel(0); 75 G4VEmModel* mod = EmModel(0);
76 if(nullptr == mod) { 76 if(nullptr == mod) {
77 mod = new G4MuonToMuonPairProductionModel( 77 mod = new G4MuonToMuonPairProductionModel(part);
78 SetEmModel(mod); 78 SetEmModel(mod);
79 } 79 }
80 80
81 G4VEmFluctuationModel* fm = nullptr; 81 G4VEmFluctuationModel* fm = nullptr;
82 G4EmParameters* param = G4EmParameters::Inst 82 G4EmParameters* param = G4EmParameters::Instance();
83 mod->SetLowEnergyLimit(param->MinKinEnergy() 83 mod->SetLowEnergyLimit(param->MinKinEnergy());
84 mod->SetHighEnergyLimit(param->MaxKinEnergy( 84 mod->SetHighEnergyLimit(param->MaxKinEnergy());
85 mod->SetSecondaryThreshold(param->MuHadBrems 85 mod->SetSecondaryThreshold(param->MuHadBremsstrahlungTh());
86 AddEmModel(1, mod, fm); 86 AddEmModel(1, mod, fm);
87 } 87 }
88 88
89 //....oooOO0OOooo........oooOO0OOooo........oo 89 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
90 90
91 void G4MuonToMuonPairProduction::ProcessDescri 91 void G4MuonToMuonPairProduction::ProcessDescription(std::ostream& out) const
92 { 92 {
93 out << " Muon-anti-muon pair production by 93 out << " Muon-anti-muon pair production by muons";
94 G4MuPairProduction::ProcessDescription(out); 94 G4MuPairProduction::ProcessDescription(out);
95 } 95 }
96 96
97 //....oooOO0OOooo........oooOO0OOooo........oo 97 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
98 98