Gabriele Cosmo
193 lines
6.6 KiB
C++
193 lines
6.6 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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// $Id: G4eeToHadronsMultiModel.hh,v 1.5 2007/05/23 08:50:41 vnivanch Exp $
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// GEANT4 tag $Name: geant4-09-01 $
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//
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// -------------------------------------------------------------------
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//
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// GEANT4 Class header file
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//
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//
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// File name: G4eeToHadronsMultiModel
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//
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// Author: Vladimir Ivanchenko
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//
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// Creation date: 18.05.2005
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//
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// Modifications:
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//
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//
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// Class Description: vector of e+e- -> hadrons models
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//
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// -------------------------------------------------------------------
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//
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#ifndef G4eeToHadronsMultiModel_h
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#define G4eeToHadronsMultiModel_h 1
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#include "G4VEmModel.hh"
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#include "G4eeToHadronsModel.hh"
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#include "G4ParticleChangeForGamma.hh"
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#include "G4TrackStatus.hh"
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#include "Randomize.hh"
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#include <vector>
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class G4eeCrossSections;
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class G4eeToHadronsMultiModel : public G4VEmModel
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{
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public:
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G4eeToHadronsMultiModel(G4int ver=0, const G4String& nam = "eeToHadrons");
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virtual ~G4eeToHadronsMultiModel();
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virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&);
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virtual G4double CrossSectionPerVolume(const G4Material*,
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const G4ParticleDefinition*,
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G4double kineticEnergy,
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G4double cutEnergy,
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G4double maxEnergy);
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virtual G4double ComputeCrossSectionPerAtom(
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const G4ParticleDefinition*,
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G4double kineticEnergy,
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G4double Z, G4double A,
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G4double cutEnergy = 0.0,
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G4double maxEnergy = DBL_MAX);
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virtual G4double ComputeCrossSectionPerElectron(
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const G4ParticleDefinition*,
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G4double kineticEnergy,
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G4double cutEnergy = 0.0,
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G4double maxEnergy = DBL_MAX);
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virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
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const G4MaterialCutsCouple*,
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const G4DynamicParticle*,
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G4double tmin = 0.0,
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G4double maxEnergy = DBL_MAX);
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void PrintInfo();
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// Set the factor to artificially increase the crossSection (default 1)
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void SetCrossSecFactor(G4double fac);
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private:
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// hide assignment operator
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G4eeToHadronsMultiModel & operator=(const G4eeToHadronsMultiModel &right);
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G4eeToHadronsMultiModel(const G4eeToHadronsMultiModel&);
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G4eeCrossSections* cross;
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G4ParticleChangeForGamma* fParticleChange;
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std::vector<G4eeToHadronsModel*> models;
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std::vector<G4double> ekinMin;
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std::vector<G4double> ekinPeak;
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std::vector<G4double> ekinMax;
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std::vector<G4double> cumSum;
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G4double thKineticEnergy;
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G4double maxKineticEnergy;
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G4double csFactor;
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G4int nModels;
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G4int verbose;
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G4bool isInitialised;
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};
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4eeToHadronsMultiModel::CrossSectionPerVolume(
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const G4Material* mat,
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const G4ParticleDefinition* p,
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G4double kineticEnergy,
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G4double, G4double)
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{
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return mat->GetElectronDensity()*
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ComputeCrossSectionPerElectron(p, kineticEnergy);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4eeToHadronsMultiModel::ComputeCrossSectionPerAtom(
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const G4ParticleDefinition* p,
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G4double kineticEnergy,
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G4double Z, G4double,
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G4double, G4double)
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{
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return Z*ComputeCrossSectionPerElectron(p, kineticEnergy);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4eeToHadronsMultiModel::ComputeCrossSectionPerElectron(
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const G4ParticleDefinition*,
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G4double kineticEnergy,
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G4double, G4double)
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{
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G4double res = 0.0;
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if (kineticEnergy > thKineticEnergy) {
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for(G4int i=0; i<nModels; i++) {
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if(kineticEnergy >= ekinMin[i] && kineticEnergy <= ekinMax[i])
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res += (models[i])->ComputeCrossSectionPerElectron(0,kineticEnergy);
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cumSum[i] = res;
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}
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}
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return res*csFactor;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline
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void G4eeToHadronsMultiModel::SampleSecondaries(std::vector<G4DynamicParticle*>* newp,
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const G4MaterialCutsCouple* couple,
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const G4DynamicParticle* dp,
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G4double, G4double)
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{
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G4double kinEnergy = dp->GetKineticEnergy();
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if (kinEnergy > thKineticEnergy) {
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G4double q = cumSum[nModels-1]*G4UniformRand();
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for(G4int i=0; i<nModels; i++) {
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if(q <= cumSum[i]) {
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(models[i])->SampleSecondaries(newp, couple,dp);
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if(newp->size() > 0) fParticleChange->ProposeTrackStatus(fStopAndKill);
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break;
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}
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}
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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#endif
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