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25 //
26 // -------------------------------------------------------------------
27 //
28 // File name: G4PolarizedGammaConversion
29 //
30 // Author: Karim Laihem based on code by Michel Maire
31 //
32 // Class Description:
33 // polarized version of G4GammaConversion
34 //
35 // -----------------------------------------------------------------------------
36
37 #include "G4PolarizedGammaConversion.hh"
38
39 #include "G4Electron.hh"
40 #include "G4EmParameters.hh"
41 #include "G4Gamma.hh"
42 #include "G4PhysicalConstants.hh"
43 #include "G4PolarizedGammaConversionModel.hh"
44 #include "G4SystemOfUnits.hh"
45
46 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
47 G4PolarizedGammaConversion::G4PolarizedGammaConversion(
48 const G4String& processName, G4ProcessType type)
49 : G4VEmProcess(processName, type)
50 , fIsInitialised(false)
51 {
52 SetMinKinEnergy(2.0 * electron_mass_c2);
53 SetLambdaBinning(220);
54 SetProcessSubType(fGammaConversion);
55 SetBuildTableFlag(true);
56 SetSecondaryParticle(G4Electron::Electron());
57 }
58
59 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
60 G4PolarizedGammaConversion::~G4PolarizedGammaConversion() {}
61
62 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
63 void G4PolarizedGammaConversion::ProcessDescription(std::ostream& out) const
64 {
65 out << "Polarized model for gamma conversion.\n";
66
67 G4VEmProcess::ProcessDescription(out);
68 }
69
70 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
71 G4bool G4PolarizedGammaConversion::IsApplicable(const G4ParticleDefinition& p)
72 {
73 return (&p == G4Gamma::Gamma());
74 }
75
76 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
77 void G4PolarizedGammaConversion::InitialiseProcess(const G4ParticleDefinition*)
78 {
79 if(!fIsInitialised)
80 {
81 fIsInitialised = true;
82 G4EmParameters* param = G4EmParameters::Instance();
83 G4double emin = std::max(param->MinKinEnergy(), 2. * electron_mass_c2);
84 G4double emax = param->MaxKinEnergy();
85 if(!EmModel(0))
86 {
87 SetEmModel(new G4PolarizedGammaConversionModel());
88 }
89 EmModel(0)->SetLowEnergyLimit(emin);
90 EmModel(0)->SetHighEnergyLimit(emax);
91 AddEmModel(1, EmModel(0));
92 }
93 }
94