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28 //------------------ G4GammaConversion physics 28 //------------------ G4GammaConversion physics process -------------------------
29 // by Michel Maire, 24 May 1 29 // by Michel Maire, 24 May 1996
30 // 30 //
31 // Modified by Michel Maire and Vladimir Ivanc 31 // Modified by Michel Maire and Vladimir Ivanchenko
32 // 32 //
33 // ------------------------------------------- 33 // -----------------------------------------------------------------------------
34 34
35 #include "G4GammaConversion.hh" 35 #include "G4GammaConversion.hh"
36 #include "G4PhysicalConstants.hh" 36 #include "G4PhysicalConstants.hh"
37 #include "G4SystemOfUnits.hh" 37 #include "G4SystemOfUnits.hh"
>> 38 #include "G4BetheHeitlerModel.hh"
38 #include "G4PairProductionRelModel.hh" 39 #include "G4PairProductionRelModel.hh"
39 #include "G4Electron.hh" 40 #include "G4Electron.hh"
40 #include "G4EmParameters.hh" 41 #include "G4EmParameters.hh"
41 42
42 //....oooOO0OOooo........oooOO0OOooo........oo 43 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
43 44
>> 45 using namespace std;
>> 46
44 G4GammaConversion::G4GammaConversion(const G4S 47 G4GammaConversion::G4GammaConversion(const G4String& processName,
45 G4ProcessType type):G4VEmProcess (processNam << 48 G4ProcessType type):G4VEmProcess (processName, type),
>> 49 isInitialised(false)
46 { 50 {
47 SetMinKinEnergy(2.0*CLHEP::electron_mass_c2) << 51 SetMinKinEnergy(2.0*electron_mass_c2);
48 SetProcessSubType(fGammaConversion); 52 SetProcessSubType(fGammaConversion);
49 SetStartFromNullFlag(true); 53 SetStartFromNullFlag(true);
50 SetBuildTableFlag(true); 54 SetBuildTableFlag(true);
51 SetSecondaryParticle(G4Electron::Electron()) 55 SetSecondaryParticle(G4Electron::Electron());
52 SetLambdaBinning(220); 56 SetLambdaBinning(220);
53 } 57 }
54 58
55 //....oooOO0OOooo........oooOO0OOooo........oo 59 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
56 60
57 G4GammaConversion::~G4GammaConversion() = defa << 61 G4GammaConversion::~G4GammaConversion()
>> 62 {}
58 63
59 //....oooOO0OOooo........oooOO0OOooo........oo 64 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
60 65
61 G4bool G4GammaConversion::IsApplicable(const G 66 G4bool G4GammaConversion::IsApplicable(const G4ParticleDefinition& p)
62 { 67 {
63 return (&p == G4Gamma::Gamma()); 68 return (&p == G4Gamma::Gamma());
64 } 69 }
65 70
66 //....oooOO0OOooo........oooOO0OOooo........oo 71 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
67 72
68 void G4GammaConversion::InitialiseProcess(cons 73 void G4GammaConversion::InitialiseProcess(const G4ParticleDefinition*)
69 { 74 {
70 if(!isInitialised) { 75 if(!isInitialised) {
71 isInitialised = true; 76 isInitialised = true;
72 G4EmParameters* param = G4EmParameters::In 77 G4EmParameters* param = G4EmParameters::Instance();
73 G4double emin = std::max(param->MinKinEner << 78 G4double emin = std::max(param->MinKinEnergy(), 2*electron_mass_c2);
74 G4double emax = param->MaxKinEnergy(); 79 G4double emax = param->MaxKinEnergy();
75 80
76 SetMinKinEnergy(emin); 81 SetMinKinEnergy(emin);
77 82
78 if(nullptr == EmModel(0)) { SetEmModel(new << 83 if(!EmModel(0)) { SetEmModel(new G4BetheHeitlerModel()); }
79 EmModel(0)->SetLowEnergyLimit(emin); 84 EmModel(0)->SetLowEnergyLimit(emin);
80 EmModel(0)->SetHighEnergyLimit(emax); << 85 G4double energyLimit = std::min(EmModel(0)->HighEnergyLimit(), 80*GeV);
>> 86 EmModel(0)->SetHighEnergyLimit(energyLimit);
81 AddEmModel(1, EmModel(0)); 87 AddEmModel(1, EmModel(0));
>> 88
>> 89 if(emax > energyLimit) {
>> 90 if(!EmModel(1)) { SetEmModel(new G4PairProductionRelModel()); }
>> 91 EmModel(1)->SetLowEnergyLimit(energyLimit);
>> 92 EmModel(1)->SetHighEnergyLimit(emax);
>> 93 AddEmModel(1, EmModel(1));
>> 94 }
82 } 95 }
83 } 96 }
84 97
85 //....oooOO0OOooo........oooOO0OOooo........oo 98 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
86 99
87 G4double G4GammaConversion::MinPrimaryEnergy(c 100 G4double G4GammaConversion::MinPrimaryEnergy(const G4ParticleDefinition*,
88 const G4Material*) 101 const G4Material*)
89 { 102 {
90 return 2*CLHEP::electron_mass_c2; << 103 return 2*electron_mass_c2;
91 } 104 }
>> 105
>> 106 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 107
>> 108 void G4GammaConversion::PrintInfo()
>> 109 {}
92 110
93 //....oooOO0OOooo........oooOO0OOooo........oo 111 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
94 112
95 void G4GammaConversion::ProcessDescription(std 113 void G4GammaConversion::ProcessDescription(std::ostream& out) const
96 { 114 {
97 out << " Gamma conversion"; 115 out << " Gamma conversion";
98 G4VEmProcess::ProcessDescription(out); 116 G4VEmProcess::ProcessDescription(out);
99 } 117 }
100 118
101 //....oooOO0OOooo........oooOO0OOooo........oo 119 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
102 120