Gabriele Cosmo
94 lines
3.8 KiB
C++
94 lines
3.8 KiB
C++
//
|
|
// ********************************************************************
|
|
// * License and Disclaimer *
|
|
// * *
|
|
// * The Geant4 software is copyright of the Copyright Holders of *
|
|
// * the Geant4 Collaboration. It is provided under the terms and *
|
|
// * conditions of the Geant4 Software License, included in the file *
|
|
// * LICENSE and available at http://cern.ch/geant4/license . These *
|
|
// * include a list of copyright holders. *
|
|
// * *
|
|
// * Neither the authors of this software system, nor their employing *
|
|
// * institutes,nor the agencies providing financial support for this *
|
|
// * work make any representation or warranty, express or implied, *
|
|
// * regarding this software system or assume any liability for its *
|
|
// * use. Please see the license in the file LICENSE and URL above *
|
|
// * for the full disclaimer and the limitation of liability. *
|
|
// * *
|
|
// * This code implementation is the result of the scientific and *
|
|
// * technical work of the GEANT4 collaboration. *
|
|
// * By using, copying, modifying or distributing the software (or *
|
|
// * any work based on the software) you agree to acknowledge its *
|
|
// * use in resulting scientific publications, and indicate your *
|
|
// * acceptance of all terms of the Geant4 Software license. *
|
|
// ********************************************************************
|
|
//
|
|
// -------------------------------------------------------------------
|
|
//
|
|
// File name: G4PolarizedGammaConversion
|
|
//
|
|
// Author: Karim Laihem based on code by Michel Maire
|
|
//
|
|
// Class Description:
|
|
// polarized version of G4GammaConversion
|
|
//
|
|
// -----------------------------------------------------------------------------
|
|
|
|
#include "G4PolarizedGammaConversion.hh"
|
|
|
|
#include "G4Electron.hh"
|
|
#include "G4EmParameters.hh"
|
|
#include "G4Gamma.hh"
|
|
#include "G4PhysicalConstants.hh"
|
|
#include "G4PolarizedGammaConversionModel.hh"
|
|
#include "G4SystemOfUnits.hh"
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
G4PolarizedGammaConversion::G4PolarizedGammaConversion(
|
|
const G4String& processName, G4ProcessType type)
|
|
: G4VEmProcess(processName, type)
|
|
, fIsInitialised(false)
|
|
{
|
|
SetMinKinEnergy(2.0 * electron_mass_c2);
|
|
SetLambdaBinning(220);
|
|
SetProcessSubType(fGammaConversion);
|
|
SetBuildTableFlag(true);
|
|
SetSecondaryParticle(G4Electron::Electron());
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
G4PolarizedGammaConversion::~G4PolarizedGammaConversion() {}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
void G4PolarizedGammaConversion::ProcessDescription(std::ostream& out) const
|
|
{
|
|
out << "Polarized model for gamma conversion.\n";
|
|
|
|
G4VEmProcess::ProcessDescription(out);
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
G4bool G4PolarizedGammaConversion::IsApplicable(const G4ParticleDefinition& p)
|
|
{
|
|
return (&p == G4Gamma::Gamma());
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
void G4PolarizedGammaConversion::InitialiseProcess(const G4ParticleDefinition*)
|
|
{
|
|
if(!fIsInitialised)
|
|
{
|
|
fIsInitialised = true;
|
|
G4EmParameters* param = G4EmParameters::Instance();
|
|
G4double emin = std::max(param->MinKinEnergy(), 2. * electron_mass_c2);
|
|
G4double emax = param->MaxKinEnergy();
|
|
if(!EmModel(0))
|
|
{
|
|
SetEmModel(new G4PolarizedGammaConversionModel());
|
|
}
|
|
EmModel(0)->SetLowEnergyLimit(emin);
|
|
EmModel(0)->SetHighEnergyLimit(emax);
|
|
AddEmModel(1, EmModel(0));
|
|
}
|
|
}
|