Gabriele Cosmo
143 lines
5.1 KiB
C++
143 lines
5.1 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: G4NuclearStopping.cc,v 1.2 2009-11-10 19:25:47 vnivanch Exp $
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// GEANT4 tag $Name: not supported by cvs2svn $
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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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// File name: G4NuclearStopping
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//
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// Author: Vladimir Ivanchenko
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//
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// Creation date: 20 July 2009
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//
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// Modified:
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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 "G4NuclearStopping.hh"
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#include "G4ICRU49NuclearStoppingModel.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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using namespace std;
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G4NuclearStopping::G4NuclearStopping(const G4String& processName)
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: G4VEmProcess(processName)
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{
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isInitialized = false;
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SetProcessSubType(fNuclearStopping);
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enableAlongStepDoIt = true;
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modelICRU49 = 0;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4NuclearStopping::~G4NuclearStopping()
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{
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delete modelICRU49;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4bool G4NuclearStopping::IsApplicable (const G4ParticleDefinition& p)
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{
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return (p.GetPDGCharge() != 0.0 && !p.IsShortLived());
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void G4NuclearStopping::InitialiseProcess(const G4ParticleDefinition*)
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{
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if(!isInitialized) {
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isInitialized = true;
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SetBuildTableFlag(false);
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// SetSecondaryParticle(G4Electron::Electron());
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if(!Model()) {
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modelICRU49 = new G4ICRU49NuclearStoppingModel();
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SetModel(modelICRU49);
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}
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AddEmModel(1, Model());
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Model()->SetParticleChange(&nParticleChange);
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4double
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G4NuclearStopping::AlongStepGetPhysicalInteractionLength(
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const G4Track&, G4double, G4double, G4double&, G4GPILSelection* selection)
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{
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*selection = NotCandidateForSelection;
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return DBL_MAX;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4VParticleChange* G4NuclearStopping::AlongStepDoIt(const G4Track& track,
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const G4Step& step)
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{
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nParticleChange.InitializeForAlongStep(track);
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G4double length = step.GetStepLength();
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if(length > 0.0) {
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G4double T1 = step.GetPreStepPoint()->GetKineticEnergy();
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G4double T2 = step.GetPostStepPoint()->GetKineticEnergy();
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if(T2 > 0.0) {
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// primary
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G4double T = 0.5*(T1 + T2);
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const G4ParticleDefinition* part = track.GetDefinition();
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const G4MaterialCutsCouple* couple = track.GetMaterialCutsCouple();
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G4VEmModel* mod = SelectModel(T, couple->GetIndex());
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// sample stopping
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if(modelICRU49) modelICRU49->SetFluctuationFlag(true);
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G4double nloss =
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length*mod->ComputeDEDXPerVolume(couple->GetMaterial(), part, T);
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if(nloss > T1) nloss = T1;
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nParticleChange.SetProposedKineticEnergy(T1 - nloss);
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nParticleChange.ProposeLocalEnergyDeposit(nloss);
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nParticleChange.ProposeNonIonizingEnergyDeposit(nloss);
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if(modelICRU49) modelICRU49->SetFluctuationFlag(false);
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}
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}
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return &nParticleChange;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void G4NuclearStopping::PrintInfo()
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{}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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