Activation/src/GammaNuclearPhysics.cc

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0025 //
0026 /// \file hadronic/Hadr03/src/GammaNuclearPhysics.cc
0027 /// \brief Implementation of the GammaNuclearPhysics class
0028 //
0029 //
0030 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0031
0032 #include "GammaNuclearPhysics.hh"
0033
0034 #include "G4ParticleDefinition.hh"
0035 #include "G4ProcessManager.hh"
0036
0037 // Processes
0038
0039 #include "G4CascadeInterface.hh"
0040 #include "G4HadronInelasticProcess.hh"
0041 #include "G4LowEGammaNuclearModel.hh"
0042 #include "G4PhotoNuclearCrossSection.hh"
0043 #include "G4SystemOfUnits.hh"
0044
0045 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0046
0047 GammaNuclearPhysics::GammaNuclearPhysics(const G4String& name) : G4VPhysicsConstructor(name) {}
0048
0049 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0050
0051 void GammaNuclearPhysics::ConstructProcess()
0052 {
0053   G4HadronInelasticProcess* process =
0054     new G4HadronInelasticProcess("photonNuclear", G4Gamma::Definition());
0055   process->AddDataSet(new G4PhotoNuclearCrossSection);
0056
0057   // to not register a model, set Emax=0; eg. Emax1 = 0.
0058   const G4double Emax1 = 200 * MeV, Emax2 = 10 * GeV;
0059
0060   if (Emax1 > 0.) {  // model 1
0061     G4LowEGammaNuclearModel* model1 = new G4LowEGammaNuclearModel();
0062     model1->SetMaxEnergy(Emax1);
0063     process->RegisterMe(model1);
0064   }
0065
0066   if (Emax2 > 0.) {  // model 2
0067     G4CascadeInterface* model2 = new G4CascadeInterface();
0068     G4double Emin2 = std::max(Emax1 - 1 * MeV, 0.);
0069     model2->SetMinEnergy(Emin2);
0070     model2->SetMaxEnergy(Emax2);
0071     process->RegisterMe(model2);
0072   }
0073
0074   G4ProcessManager* pManager = G4Gamma::Gamma()->GetProcessManager();
0075   pManager->AddDiscreteProcess(process);
0076 }
0077
0078 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......