Activation/src/GammaNuclearPhysics.cc

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0025 //
0026 /// \file GammaNuclearPhysics.cc
0027 /// \brief Implementation of the GammaNuclearPhysics class
0028
0029 #include "GammaNuclearPhysics.hh"
0030
0031 #include "G4ParticleDefinition.hh"
0032 #include "G4ProcessManager.hh"
0033
0034 // Processes
0035
0036 #include "G4CascadeInterface.hh"
0037 #include "G4GammaNuclearXS.hh"
0038 #include "G4HadronInelasticProcess.hh"
0039 #include "G4LowEGammaNuclearModel.hh"
0040 #include "G4SystemOfUnits.hh"
0041
0042 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0043
0044 GammaNuclearPhysics::GammaNuclearPhysics(const G4String& name) : G4VPhysicsConstructor(name) {}
0045
0046 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0047
0048 void GammaNuclearPhysics::ConstructProcess()
0049 {
0050   G4HadronInelasticProcess* process =
0051     new G4HadronInelasticProcess("photonNuclear", G4Gamma::Definition());
0052   process->AddDataSet(new G4GammaNuclearXS);
0053
0054   // to not register a model, set Emax=0; eg. Emax1 = 0.
0055   const G4double Emax1 = 200 * MeV, Emax2 = 10 * GeV;
0056
0057   if (Emax1 > 0.) {  // model 1
0058     G4LowEGammaNuclearModel* model1 = new G4LowEGammaNuclearModel();
0059     model1->SetMaxEnergy(Emax1);
0060     process->RegisterMe(model1);
0061   }
0062
0063   if (Emax2 > 0.) {  // model 2
0064     G4CascadeInterface* model2 = new G4CascadeInterface();
0065     G4double Emin2 = std::max(Emax1 - 1 * MeV, 0.);
0066     model2->SetMinEnergy(Emin2);
0067     model2->SetMaxEnergy(Emax2);
0068     process->RegisterMe(model2);
0069   }
0070
0071   G4ProcessManager* pManager = G4Gamma::Gamma()->GetProcessManager();
0072   pManager->AddDiscreteProcess(process);
0073 }
0074
0075 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......