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G4ePairProduction.cc
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25 //
26 //
27 // -------------------------------------------------------------------
28 //
29 // GEANT4 Class file
30 //
31 //
32 // File name: G4ePairProduction
33 //
34 // Author: Vladimir Ivanchenko
35 //
36 // Creation date: 17.03.2016
37 //
38 // Modifications:
39 //
40 // -------------------------------------------------------------------
41 //
42 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
43 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
44 
45 #include "G4ePairProduction.hh"
46 #include "G4SystemOfUnits.hh"
47 #include "G4Electron.hh"
48 #include "G4Positron.hh"
49 #include "G4VEmModel.hh"
50 #include "G4VEmFluctuationModel.hh"
52 #include "G4ElementData.hh"
53 #include "G4EmParameters.hh"
54 
55 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
56 
57 using namespace std;
58 
60  : G4VEnergyLossProcess(name),
61  theParticle(nullptr),
62  lowestKinEnergy(100.*MeV),
63  isInitialised(false)
64 {
67  SetIonisation(false);
68 }
69 
70 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
71 
73 {
74  return (G4Electron::Electron() == &p || G4Positron::Positron() == &p);
75 }
76 
77 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
78 
80  const G4Material*,
81  G4double)
82 {
83  return lowestKinEnergy;
84 }
85 
86 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
87 
90  const G4ParticleDefinition*)
91 {
92  if (!isInitialised) {
93  isInitialised = true;
94 
95  theParticle = part;
96 
97  G4MuPairProductionModel* mod = new G4MuPairProductionModel(part, "ePairProd");
98  SetEmModel(mod);
99 
102 
103  G4VEmFluctuationModel* fm = nullptr;
105  mod->SetLowEnergyLimit(param->MinKinEnergy());
106  mod->SetHighEnergyLimit(param->MaxKinEnergy());
107  AddEmModel(1, mod, fm);
108  }
109 }
110 
111 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
112 
113 void G4ePairProduction::StreamProcessInfo(std::ostream& out) const
114 {
116  if(ed) {
117  for(G4int Z=1; Z<93; ++Z) {
119  if(pv) {
120  out << " Sampling table " << pv->GetLengthY()
121  << "x" << pv->GetLengthX() << "; from "
122  << G4Exp(pv->GetY(0))/GeV << " GeV to "
123  << G4Exp(pv->GetY(pv->GetLengthY()-1))/TeV
124  << " TeV " << G4endl;
125  break;
126  }
127  }
128  }
129 }
130 
131 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
132 
133 void G4ePairProduction::ProcessDescription(std::ostream& out) const
134 {
135  out << " Pair production";
137 }
138 
139 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....