Hadr05/src/GammaNuclearPhysics.cc

0001 //
0002 // ********************************************************************
0003 // * License and Disclaimer                                           *
0004 // *                                                                  *
0005 // * The  Geant4 software  is  copyright of the Copyright Holders  of *
0006 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
0007 // * conditions of the Geant4 Software License,  included in the file *
0008 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
0009 // * include a list of copyright holders.                             *
0010 // *                                                                  *
0011 // * Neither the authors of this software system, nor their employing *
0012 // * institutes,nor the agencies providing financial support for this *
0013 // * work  make  any representation or  warranty, express or implied, *
0014 // * regarding  this  software system or assume any liability for its *
0015 // * use.  Please see the license in the file  LICENSE  and URL above *
0016 // * for the full disclaimer and the limitation of liability.         *
0017 // *                                                                  *
0018 // * This  code  implementation is the result of  the  scientific and *
0019 // * technical work of the GEANT4 collaboration.                      *
0020 // * By using,  copying,  modifying or  distributing the software (or *
0021 // * any work based  on the software)  you  agree  to acknowledge its *
0022 // * use  in  resulting  scientific  publications,  and indicate your *
0023 // * acceptance of all terms of the Geant4 Software license.          *
0024 // ********************************************************************
0025 //
0026 /// \file GammaNuclearPhysics.cc
0027 /// \brief Implementation of the GammaNuclearPhysics class
0028 //
0029 //
0030
0031 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0032
0033 #include "GammaNuclearPhysics.hh"
0034
0035 #include "G4ParticleDefinition.hh"
0036 #include "G4ProcessManager.hh"
0037
0038 // Processes
0039
0040 #include "G4CascadeInterface.hh"
0041 #include "G4HadronInelasticProcess.hh"
0042 #include "G4LowEGammaNuclearModel.hh"
0043 #include "G4PhotoNuclearCrossSection.hh"
0044 #include "G4SystemOfUnits.hh"
0045
0046 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0047
0048 GammaNuclearPhysics::GammaNuclearPhysics(const G4String& name) : G4VPhysicsConstructor(name) {}
0049
0050 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0051
0052 void GammaNuclearPhysics::ConstructProcess()
0053 {
0054   G4HadronInelasticProcess* process =
0055     new G4HadronInelasticProcess("photonNuclear", G4Gamma::Definition());
0056   process->AddDataSet(new G4PhotoNuclearCrossSection);
0057
0058   // to not register a model, set Emax=0; eg. Emax1 = 0.
0059   const G4double Emax1 = 200 * MeV, Emax2 = 10 * GeV;
0060
0061   if (Emax1 > 0.) {  // model 1
0062     G4LowEGammaNuclearModel* model1 = new G4LowEGammaNuclearModel();
0063     model1->SetMaxEnergy(Emax1);
0064     process->RegisterMe(model1);
0065   }
0066
0067   if (Emax2 > 0.) {  // model 2
0068     G4CascadeInterface* model2 = new G4CascadeInterface();
0069     G4double Emin2 = std::max(Emax1 - 1 * MeV, 0.);
0070     model2->SetMinEnergy(Emin2);
0071     model2->SetMaxEnergy(Emax2);
0072     process->RegisterMe(model2);
0073   }
0074
0075   G4ProcessManager* pManager = G4Gamma::Gamma()->GetProcessManager();
0076   pManager->AddDiscreteProcess(process);
0077 }
0078
0079 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......