Gabriele Cosmo
137 lines
4.9 KiB
C++
137 lines
4.9 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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//
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// GEANT4 Class file
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//
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//
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// File name: G4eBremsstrahlung
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//
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// Author: Michel Maire
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//
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// Creation date: 26.06.1996
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//
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// Modified by Michel Maire, Vladimir Ivanchenko, Andreas Schaelicke
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//
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// -------------------------------------------------------------------
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//
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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#include "G4eBremsstrahlung.hh"
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#include "G4SystemOfUnits.hh"
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#include "G4Gamma.hh"
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#include "G4SeltzerBergerModel.hh"
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#include "G4eBremsstrahlungRelModel.hh"
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#include "G4UnitsTable.hh"
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#include "G4LossTableManager.hh"
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#include "G4ProductionCutsTable.hh"
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#include "G4MaterialCutsCouple.hh"
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#include "G4EmParameters.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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using namespace std;
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G4eBremsstrahlung::G4eBremsstrahlung(const G4String& name):
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G4VEnergyLossProcess(name)
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{
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SetProcessSubType(fBremsstrahlung);
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SetSecondaryParticle(G4Gamma::Gamma());
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SetIonisation(false);
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SetCrossSectionType(fEmTwoPeaks);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4eBremsstrahlung::~G4eBremsstrahlung() = default;
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4bool G4eBremsstrahlung::IsApplicable(const G4ParticleDefinition& p)
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{
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return (&p == G4Electron::Electron() || &p == G4Positron::Positron());
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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void
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G4eBremsstrahlung::InitialiseEnergyLossProcess(const G4ParticleDefinition*,
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const G4ParticleDefinition*)
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{
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if(!isInitialised) {
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G4EmParameters* param = G4EmParameters::Instance();
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G4double emax = param->MaxKinEnergy();
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G4VEmFluctuationModel* fm = nullptr;
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if (nullptr == EmModel(0)) { SetEmModel(new G4SeltzerBergerModel()); }
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G4double energyLimit = std::min(EmModel(0)->HighEnergyLimit(), CLHEP::GeV);
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EmModel(0)->SetHighEnergyLimit(energyLimit);
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EmModel(0)->SetSecondaryThreshold(param->BremsstrahlungTh());
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AddEmModel(1, EmModel(0), fm);
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if(emax > energyLimit) {
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if (nullptr == EmModel(1)) {
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SetEmModel(new G4eBremsstrahlungRelModel());
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}
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EmModel(1)->SetLowEnergyLimit(energyLimit);
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EmModel(1)->SetHighEnergyLimit(emax);
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EmModel(1)->SetSecondaryThreshold(param->BremsstrahlungTh());
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AddEmModel(1, EmModel(1), fm);
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}
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isInitialised = true;
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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void G4eBremsstrahlung::StreamProcessInfo(std::ostream& out) const
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{
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if(nullptr != EmModel(0)) {
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G4EmParameters* param = G4EmParameters::Instance();
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G4double eth = param->BremsstrahlungTh();
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out << " LPM flag: " << param->LPM() << " for E > "
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<< EmModel(0)->HighEnergyLimit()/GeV << " GeV";
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if(eth < DBL_MAX) {
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out << ", VertexHighEnergyTh(GeV)= " << eth/GeV;
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}
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out << G4endl;
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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void G4eBremsstrahlung::ProcessDescription(std::ostream& out) const
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{
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out << " Bremsstrahlung";
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G4VEnergyLossProcess::ProcessDescription(out);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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