Gabriele Cosmo
161 lines
5.5 KiB
C++
161 lines
5.5 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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// ClassName: G4LowECapture
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//
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// Author: V.Ivanchenko 31 August 2010
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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 "G4LowECapture.hh"
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#include "G4SystemOfUnits.hh"
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#include "G4ParticleDefinition.hh"
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#include "G4Step.hh"
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#include "G4Track.hh"
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#include "G4Region.hh"
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#include "G4RegionStore.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4LowECapture::G4LowECapture(G4double ekinlim)
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: G4VDiscreteProcess("Capture", fElectromagnetic),
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kinEnergyThreshold(ekinlim), isIon(false),
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nRegions(0)
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{}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4LowECapture::~G4LowECapture()
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{}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void G4LowECapture::SetKinEnergyLimit(G4double val)
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{
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kinEnergyThreshold = val;
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if(verboseLevel > 0) {
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G4cout << "### G4LowECapture: Tracking cut E(MeV) = "
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<< kinEnergyThreshold/MeV << G4endl;
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void G4LowECapture::AddRegion(const G4String& nam)
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{
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G4String r = nam;
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if(r == "" || r == "world" || r == "World") r = "DefaultRegionForTheWorld";
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for(G4int i=0; i<nRegions; ++i) {
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if(regionName[i] == r) { return; }
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}
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regionName.push_back(r);
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++nRegions;
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if(verboseLevel > 1) {
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G4cout << "### G4LowECapture: new G4Region <" << r << ">" << G4endl;
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void G4LowECapture::BuildPhysicsTable(const G4ParticleDefinition& part)
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{
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G4RegionStore* store = G4RegionStore::GetInstance();
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for(G4int i=0; i<nRegions; ++i) {
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const G4Region* r = store->GetRegion(regionName[i]);
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if(r && verboseLevel > 0) {
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G4cout << "### G4LowECapture: new G4Region <"
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<< regionName[i] << "> with tracking cut "
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<< kinEnergyThreshold/keV << " keV" << G4endl;
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}
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if(r) { region.push_back(r); }
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}
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nRegions = region.size();
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// ions reusing G4GenericIon parameters
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if(part.GetParticleType() == "nucleus") {
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G4String pname = part.GetParticleName();
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if(pname != "deuteron" && pname != "triton" &&
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pname != "alpha" && pname != "He3" &&
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pname != "alpha+" && pname != "helium" &&
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pname != "hydrogen") { isIon = true; }
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4bool G4LowECapture::IsApplicable(const G4ParticleDefinition&)
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{
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return true;
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}
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G4double G4LowECapture::PostStepGetPhysicalInteractionLength(
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const G4Track& aTrack, G4double, G4ForceCondition* condition)
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{
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*condition = NotForced;
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G4double limit = DBL_MAX;
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G4double eLimit = kinEnergyThreshold;
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if(isIon) {
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eLimit *= aTrack.GetDefinition()->GetPDGMass()/CLHEP::proton_mass_c2;
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}
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if(aTrack.GetKineticEnergy() < eLimit) {
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for(G4int i=0; i<nRegions; ++i) {
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if(aTrack.GetVolume()->GetLogicalVolume()->GetRegion() == region[i]) {
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limit = 0.0;
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break;
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}
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}
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}
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return limit;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4VParticleChange* G4LowECapture::PostStepDoIt(const G4Track& aTrack,
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const G4Step&)
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{
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pParticleChange->Initialize(aTrack);
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pParticleChange->ProposeTrackStatus(fStopAndKill);
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pParticleChange->ProposeLocalEnergyDeposit(aTrack.GetKineticEnergy());
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return pParticleChange;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4double G4LowECapture::GetMeanFreePath(const G4Track&, G4double,
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G4ForceCondition*)
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{
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return DBL_MAX;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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