Gabriele Cosmo
102 lines
3.9 KiB
C++
102 lines
3.9 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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//
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//------------------ G4GammaConversion physics process -------------------------
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// by Michel Maire, 24 May 1996
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//
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// Modified by Michel Maire and Vladimir Ivanchenko
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//
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// -----------------------------------------------------------------------------
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#include "G4GammaConversion.hh"
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#include "G4PhysicalConstants.hh"
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#include "G4SystemOfUnits.hh"
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#include "G4PairProductionRelModel.hh"
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#include "G4Electron.hh"
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#include "G4EmParameters.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4GammaConversion::G4GammaConversion(const G4String& processName,
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G4ProcessType type):G4VEmProcess (processName, type)
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{
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SetMinKinEnergy(2.0*CLHEP::electron_mass_c2);
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SetProcessSubType(fGammaConversion);
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SetStartFromNullFlag(true);
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SetBuildTableFlag(true);
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SetSecondaryParticle(G4Electron::Electron());
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SetLambdaBinning(220);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4GammaConversion::~G4GammaConversion() = default;
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4bool G4GammaConversion::IsApplicable(const G4ParticleDefinition& p)
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{
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return (&p == G4Gamma::Gamma());
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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void G4GammaConversion::InitialiseProcess(const G4ParticleDefinition*)
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{
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if(!isInitialised) {
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isInitialised = true;
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G4EmParameters* param = G4EmParameters::Instance();
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G4double emin = std::max(param->MinKinEnergy(), 2*CLHEP::electron_mass_c2);
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G4double emax = param->MaxKinEnergy();
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SetMinKinEnergy(emin);
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if(nullptr == EmModel(0)) { SetEmModel(new G4PairProductionRelModel()); }
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EmModel(0)->SetLowEnergyLimit(emin);
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EmModel(0)->SetHighEnergyLimit(emax);
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AddEmModel(1, EmModel(0));
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4double G4GammaConversion::MinPrimaryEnergy(const G4ParticleDefinition*,
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const G4Material*)
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{
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return 2*CLHEP::electron_mass_c2;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void G4GammaConversion::ProcessDescription(std::ostream& out) const
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{
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out << " Gamma conversion";
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G4VEmProcess::ProcessDescription(out);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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