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G4MuPairProduction.cc
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25 //
26 //
27 // -------------------------------------------------------------------
28 //
29 // GEANT4 Class file
30 //
31 //
32 // File name: G4MuPairProduction
33 //
34 // Author: Laszlo Urban
35 //
36 // Creation date: 30.05.1998
37 //
38 // Modifications:
39 //
40 // 04-06-98 in DoIt,secondary production condition:
41 // range>std::min(threshold,safety)
42 // 26-10-98 new stuff from R. Kokoulin + cleanup , L.Urban
43 // 06-05-99 bug fixed , L.Urban
44 // 10-02-00 modifications+bug fix , new e.m. structure, L.Urban
45 // 29-05-01 V.Ivanchenko minor changes to provide ANSI -wall compilation
46 // 10-08-01 new methods Store/Retrieve PhysicsTable (mma)
47 // 17-09-01 migration of Materials to pure STL (mma)
48 // 20-09-01 (L.Urban) in ComputeMicroscopicCrossSection, remove:
49 // if(MaxPairEnergy<CutInPairEnergy) MaxPairEnergy=CutInPairEnergy
50 // 26-09-01 completion of store/retrieve PhysicsTable
51 // 28-09-01 suppression of theMuonPlus ..etc..data members (mma)
52 // 29-10-01 all static functions no more inlined (mma)
53 // 07-11-01 particleMass becomes a local variable (mma)
54 // 19-08-02 V.Ivanchenko update to new design
55 // 23-12-02 Change interface in order to move to cut per region (V.Ivanchenko)
56 // 26-12-02 Secondary production moved to derived classes (V.Ivanchenko)
57 // 13-02-03 SubCutoff regime is assigned to a region (V.Ivanchenko)
58 // 08-08-03 STD substitute standard (V.Ivanchenko)
59 // 27-09-03 e+ set to be a secondary particle (V.Ivanchenko)
60 // 12-11-03 G4EnergyLossSTD -> G4EnergyLossProcess (V.Ivanchenko)
61 // 10-02-04 Add lowestKinEnergy (V.Ivanchenko)
62 // 17-08-04 Utilise mu+ tables for mu- (V.Ivanchenko)
63 // 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko)
64 // 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
65 //
66 // -------------------------------------------------------------------
67 //
68 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
69 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
70 
71 #include "G4MuPairProduction.hh"
72 #include "G4SystemOfUnits.hh"
73 #include "G4Positron.hh"
74 #include "G4VEmModel.hh"
76 #include "G4ElementData.hh"
77 #include "G4EmParameters.hh"
78 
79 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
80 
81 using namespace std;
82 
84  : G4VEnergyLossProcess(name),
85  theParticle(nullptr),
86  lowestKinEnergy(1.*GeV),
87  isInitialised(false)
88 {
91  SetIonisation(false);
92 }
93 
94 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
95 
97 {
98  return (p.GetPDGCharge() != 0.0 && p.GetPDGMass() > 10.0*MeV);
99 }
100 
101 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
102 
104  const G4Material*,
105  G4double)
106 {
107  return lowestKinEnergy;
108 }
109 
110 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
111 
113  const G4ParticleDefinition* part,
114  const G4ParticleDefinition*)
115 {
116  if (!isInitialised) {
117  isInitialised = true;
118 
119  theParticle = part;
120 
122  SetEmModel(mod);
123 
126 
127  G4VEmFluctuationModel* fm = nullptr;
129  mod->SetLowEnergyLimit(param->MinKinEnergy());
130  mod->SetHighEnergyLimit(param->MaxKinEnergy());
131  AddEmModel(1, mod, fm);
132  }
133 }
134 
135 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
136 
137 void G4MuPairProduction::StreamProcessInfo(std::ostream& out) const
138 {
140  if(ed) {
141  for(G4int Z=1; Z<93; ++Z) {
143  if(pv) {
144  out << " Sampling table " << pv->GetLengthY()
145  << "x" << pv->GetLengthX() << "; from "
146  << exp(pv->GetY(0))/GeV << " GeV to "
147  << exp(pv->GetY(pv->GetLengthY()-1))/TeV
148  << " TeV " << G4endl;
149  break;
150  }
151  }
152  }
153 }
154 
155 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
156 
157 void G4MuPairProduction::ProcessDescription(std::ostream& out) const
158 {
159  out << " Pair production";
161 }
162 
163 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....