Gabriele Cosmo
132 lines
5.1 KiB
C++
132 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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// G4ParticleChangeForLoss class implementation
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//
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// Author: Hisaya Kurashige, 23 March 1998
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// Revision: Vladimir Ivantchenko, 16 January 2004
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// --------------------------------------------------------------------
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#include "G4ParticleChangeForLoss.hh"
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#include "G4SystemOfUnits.hh"
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#include "G4ExceptionSeverity.hh"
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// --------------------------------------------------------------------
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G4ParticleChangeForLoss::G4ParticleChangeForLoss()
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{
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// Disable flag that is enabled in G4VParticleChange if G4VERBOSE.
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debugFlag = false;
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}
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// --------------------------------------------------------------------
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void G4ParticleChangeForLoss::DumpInfo() const
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{
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// use base-class DumpInfo
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G4VParticleChange::DumpInfo();
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G4long oldprc = G4cout.precision(8);
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G4cout << " -----------------------------------------------" << G4endl;
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G4cout << " G4ParticleChangeForLoss proposes: " << G4endl;
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G4cout << " Charge (eplus) : " << std::setw(20)
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<< currentCharge / eplus << G4endl;
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G4cout << " Kinetic Energy (MeV): " << std::setw(20)
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<< proposedKinEnergy / MeV << G4endl;
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G4cout << " Momentum Direct - x : " << std::setw(20)
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<< proposedMomentumDirection.x() << G4endl;
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G4cout << " Momentum Direct - y : " << std::setw(20)
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<< proposedMomentumDirection.y() << G4endl;
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G4cout << " Momentum Direct - z : " << std::setw(20)
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<< proposedMomentumDirection.z() << G4endl;
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G4cout.precision(oldprc);
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}
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// --------------------------------------------------------------------
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G4Step* G4ParticleChangeForLoss::UpdateStepForAlongStep(G4Step* pStep)
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{
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const G4StepPoint* pPreStepPoint = pStep->GetPreStepPoint();
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G4StepPoint* pPostStepPoint = pStep->GetPostStepPoint();
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// accumulate change of the kinetic energy
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G4double preKinEnergy = pPreStepPoint->GetKineticEnergy();
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G4double kinEnergy =
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pPostStepPoint->GetKineticEnergy() + (proposedKinEnergy - preKinEnergy);
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pPostStepPoint->SetCharge(currentCharge);
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// calculate velocity
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if(kinEnergy > 0.0)
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{
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pPostStepPoint->SetKineticEnergy(kinEnergy);
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// assuming that mass>0, zero mass particles do not have energy loss
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pPostStepPoint->SetVelocity(CLHEP::c_light*ComputeBeta(kinEnergy));
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}
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else
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{
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pPostStepPoint->SetKineticEnergy(0.0);
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pPostStepPoint->SetVelocity(0.0);
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}
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if(isParentWeightProposed)
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{
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pPostStepPoint->SetWeight(theParentWeight);
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}
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pStep->AddTotalEnergyDeposit(theLocalEnergyDeposit);
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pStep->AddNonIonizingEnergyDeposit(theNonIonizingEnergyDeposit);
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return pStep;
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}
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// --------------------------------------------------------------------
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G4Step* G4ParticleChangeForLoss::UpdateStepForPostStep(G4Step* pStep)
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{
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G4StepPoint* pPostStepPoint = pStep->GetPostStepPoint();
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pPostStepPoint->SetCharge(currentCharge);
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pPostStepPoint->SetMomentumDirection(proposedMomentumDirection);
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if(proposedKinEnergy > 0.0)
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{
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pPostStepPoint->SetKineticEnergy(proposedKinEnergy);
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// assuming that mass>0, zero mass particles do not have energy loss
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pPostStepPoint->SetVelocity(CLHEP::c_light*ComputeBeta(proposedKinEnergy));
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}
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else
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{
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pPostStepPoint->SetKineticEnergy(0.0);
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pPostStepPoint->SetVelocity(0.0);
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}
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pPostStepPoint->SetPolarization(proposedPolarization);
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if(isParentWeightProposed)
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{
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pPostStepPoint->SetWeight(theParentWeight);
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}
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pStep->AddTotalEnergyDeposit(theLocalEnergyDeposit);
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pStep->AddNonIonizingEnergyDeposit(theNonIonizingEnergyDeposit);
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return pStep;
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}
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