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25 //
26 //
27 // -------------------------------------------------------------------
28 //
29 // GEANT4 Class file
30 //
31 //
32 // File name: G4eBremsstrahlung
33 //
34 // Author: Michel Maire
35 //
36 // Creation date: 26.06.1996
37 //
38 // Modified by Michel Maire, Vladimir Ivanchenko, Andreas Schaelicke
39 //
40 // -------------------------------------------------------------------
41 //
42 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
43 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
44
45 #include "G4eBremsstrahlung.hh"
46 #include "G4SystemOfUnits.hh"
47 #include "G4Gamma.hh"
48 #include "G4SeltzerBergerModel.hh"
49 #include "G4eBremsstrahlungRelModel.hh"
50 #include "G4UnitsTable.hh"
51 #include "G4LossTableManager.hh"
52
53 #include "G4ProductionCutsTable.hh"
54 #include "G4MaterialCutsCouple.hh"
55 #include "G4EmParameters.hh"
56
57 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
58
59 using namespace std;
60
61 G4eBremsstrahlung::G4eBremsstrahlung(const G4String& name):
62 G4VEnergyLossProcess(name)
63 {
64 SetProcessSubType(fBremsstrahlung);
65 SetSecondaryParticle(G4Gamma::Gamma());
66 SetIonisation(false);
67 SetCrossSectionType(fEmTwoPeaks);
68 }
69
70 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
71
72 G4eBremsstrahlung::~G4eBremsstrahlung() = default;
73
74 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
75
76 G4bool G4eBremsstrahlung::IsApplicable(const G4ParticleDefinition& p)
77 {
78 return (&p == G4Electron::Electron() || &p == G4Positron::Positron());
79 }
80
81 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
82
83 void
84 G4eBremsstrahlung::InitialiseEnergyLossProcess(const G4ParticleDefinition*,
85 const G4ParticleDefinition*)
86 {
87 if(!isInitialised) {
88 G4EmParameters* param = G4EmParameters::Instance();
89
90 G4double emax = param->MaxKinEnergy();
91 G4VEmFluctuationModel* fm = nullptr;
92
93 if (nullptr == EmModel(0)) { SetEmModel(new G4SeltzerBergerModel()); }
94 G4double energyLimit = std::min(EmModel(0)->HighEnergyLimit(), CLHEP::GeV);
95 EmModel(0)->SetHighEnergyLimit(energyLimit);
96 EmModel(0)->SetSecondaryThreshold(param->BremsstrahlungTh());
97 AddEmModel(1, EmModel(0), fm);
98
99 if(emax > energyLimit) {
100 if (nullptr == EmModel(1)) {
101 SetEmModel(new G4eBremsstrahlungRelModel());
102 }
103 EmModel(1)->SetLowEnergyLimit(energyLimit);
104 EmModel(1)->SetHighEnergyLimit(emax);
105 EmModel(1)->SetSecondaryThreshold(param->BremsstrahlungTh());
106 AddEmModel(1, EmModel(1), fm);
107 }
108 isInitialised = true;
109 }
110 }
111
112 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
113
114 void G4eBremsstrahlung::StreamProcessInfo(std::ostream& out) const
115 {
116 if(nullptr != EmModel(0)) {
117 G4EmParameters* param = G4EmParameters::Instance();
118 G4double eth = param->BremsstrahlungTh();
119 out << " LPM flag: " << param->LPM() << " for E > "
120 << EmModel(0)->HighEnergyLimit()/GeV << " GeV";
121 if(eth < DBL_MAX) {
122 out << ", VertexHighEnergyTh(GeV)= " << eth/GeV;
123 }
124 out << G4endl;
125 }
126 }
127
128 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
129
130 void G4eBremsstrahlung::ProcessDescription(std::ostream& out) const
131 {
132 out << " Bremsstrahlung";
133 G4VEnergyLossProcess::ProcessDescription(out);
134 }
135
136 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
137