Gabriele Cosmo
160 lines
5.6 KiB
C++
160 lines
5.6 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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//
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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: G4EmMultiModel
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//
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// Author: Vladimir Ivanchenko
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//
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// Creation date: 03.05.2004
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//
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// Modifications:
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// 15-04-05 optimize internal interface (V.Ivanchenko)
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// 04-07-10 updated interfaces according to g4 9.4 (V.Ivanchenko)
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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 "G4EmMultiModel.hh"
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#include "Randomize.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4EmMultiModel::G4EmMultiModel(const G4String& nam)
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: G4VEmModel(nam), nModels(0)
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{
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model.clear();
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cross_section.clear();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4EmMultiModel::~G4EmMultiModel()
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{}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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void G4EmMultiModel::AddModel(G4VEmModel* p)
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{
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cross_section.push_back(0.0);
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model.push_back(p);
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++nModels;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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void G4EmMultiModel::Initialise(const G4ParticleDefinition* p,
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const G4DataVector& cuts)
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{
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if(nModels > 0) {
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G4cout << "### Initialisation of EM MultiModel " << GetName()
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<< " including following list of models:" << G4endl;
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for(G4int i=0; i<nModels; ++i) {
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G4cout << " " << (model[i])->GetName();
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(model[i])->SetParticleChange(pParticleChange, GetModelOfFluctuations());
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(model[i])->Initialise(p, cuts);
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}
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G4cout << G4endl;
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4double G4EmMultiModel::ComputeDEDX(const G4MaterialCutsCouple* couple,
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const G4ParticleDefinition* p,
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G4double kineticEnergy,
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G4double cutEnergy)
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{
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SetCurrentCouple(couple);
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G4double dedx = 0.0;
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if(nModels > 0) {
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for(G4int i=0; i<nModels; i++) {
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dedx += (model[i])->ComputeDEDX(couple, p, cutEnergy, kineticEnergy);
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}
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}
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return dedx;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4double G4EmMultiModel::ComputeCrossSectionPerAtom(const G4ParticleDefinition* p,
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G4double kinEnergy,
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G4double Z,
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G4double A,
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G4double cutEnergy,
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G4double maxEnergy)
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{
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G4double cross = 0.0;
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if(nModels>0) {
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for(G4int i=0; i<nModels; ++i) {
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(model[i])->SetCurrentCouple(CurrentCouple());
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cross += (model[i])->ComputeCrossSectionPerAtom(p, kinEnergy, Z, A,
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cutEnergy, maxEnergy);
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}
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}
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return cross;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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void G4EmMultiModel::SampleSecondaries(std::vector<G4DynamicParticle*>* vdp,
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const G4MaterialCutsCouple* couple,
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const G4DynamicParticle* dp,
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G4double minEnergy,
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G4double maxEnergy)
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{
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SetCurrentCouple(couple);
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if(nModels > 0) {
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G4int i;
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G4double cross = 0.0;
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for(i=0; i<nModels; ++i) {
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cross += (model[i])->CrossSection(couple, dp->GetParticleDefinition(),
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dp->GetKineticEnergy(), minEnergy, maxEnergy);
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cross_section[i] = cross;
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}
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cross *= G4UniformRand();
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for(i=0; i<nModels; ++i) {
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if(cross <= cross_section[i]) {
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(model[i])->SampleSecondaries(vdp, couple, dp, minEnergy, maxEnergy);
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return;
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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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