Gabriele Cosmo
169 lines
6.1 KiB
C++
169 lines
6.1 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: G4VAdjointReverseReaction.cc 87443 2014-12-04 12:26:31Z gunter $
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//
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#include "G4VAdjointReverseReaction.hh"
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#include "G4SystemOfUnits.hh"
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#include "G4AdjointCSManager.hh"
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#include "G4AdjointCSMatrix.hh"
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#include "G4AdjointInterpolator.hh"
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#include "G4AdjointCSMatrix.hh"
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#include "G4VEmAdjointModel.hh"
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#include "G4ElementTable.hh"
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#include "G4Element.hh"
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#include "G4Material.hh"
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#include "G4MaterialCutsCouple.hh"
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#include "G4AdjointCSManager.hh"
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#include "G4ParticleChange.hh"
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#include "G4AdjointElectron.hh"
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G4VAdjointReverseReaction::
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G4VAdjointReverseReaction(G4String process_name, G4bool whichScatCase):
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G4VDiscreteProcess(process_name)
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{theAdjointCSManager = G4AdjointCSManager::GetAdjointCSManager();
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IsScatProjToProjCase=whichScatCase;
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fParticleChange=new G4ParticleChange();
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IsFwdCSUsed=false;
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IsIntegralModeUsed=false;
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lastCS=0.;
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trackid = nstep = 0;
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}
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//////////////////////////////////////////////////////////////////////////////
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//
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G4VAdjointReverseReaction::
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~G4VAdjointReverseReaction()
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{ if (fParticleChange) delete fParticleChange;
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}
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//////////////////////////////////////////////////////////////////////////////
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//
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void G4VAdjointReverseReaction::PreparePhysicsTable(const G4ParticleDefinition&)
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{;
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}
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//////////////////////////////////////////////////////////////////////////////
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//
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void G4VAdjointReverseReaction::BuildPhysicsTable(const G4ParticleDefinition&)
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{
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theAdjointCSManager->BuildCrossSectionMatrices(); //do not worry it will be done just once
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theAdjointCSManager->BuildTotalSigmaTables();
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}
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//////////////////////////////////////////////////////////////////////////////
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//
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G4VParticleChange* G4VAdjointReverseReaction::PostStepDoIt(const G4Track& track, const G4Step& )
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{
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fParticleChange->Initialize(track);
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/* if (IsFwdCSUsed && IsIntegralModeUsed){ //INtegral mode still unstable
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G4double Tkin = step.GetPostStepPoint()->GetKineticEnergy();
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G4double fwdCS = theAdjointCSManager->GetTotalForwardCS(track.GetDefinition(), Tkin, track.GetMaterialCutsCouple());
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//G4cout<<"lastCS "<<lastCS<<G4endl;
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if (fwdCS<lastCS*G4UniformRand()) { // the reaction does not take place, same integral method as the one used for forward ionisation in G4
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ClearNumberOfInteractionLengthLeft();
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return fParticleChange;
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}
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}
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*/
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theAdjointEMModel->SampleSecondaries(track,
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IsScatProjToProjCase,
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fParticleChange);
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ClearNumberOfInteractionLengthLeft();
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return fParticleChange;
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}
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//////////////////////////////////////////////////////////////////////////////
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//
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G4double G4VAdjointReverseReaction::GetMeanFreePath(const G4Track& track,
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G4double ,
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G4ForceCondition* condition)
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{ *condition = NotForced;
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G4double preStepKinEnergy = track.GetKineticEnergy();
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if(track.GetTrackID() != trackid) {
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trackid = track.GetTrackID();
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nstep = 0;
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}
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++nstep;
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/*G4double Sigma =
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theAdjointEMModel->AdjointCrossSection(track.GetMaterialCutsCouple(),preStepKinEnergy,IsScatProjToProjCase);*/
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G4double Sigma =
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theAdjointEMModel->GetAdjointCrossSection(track.GetMaterialCutsCouple(),preStepKinEnergy,IsScatProjToProjCase);
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//G4double sig = Sigma;
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G4double fwd_TotCS;
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G4double corr = theAdjointCSManager->GetCrossSectionCorrection(track.GetDefinition(),preStepKinEnergy,track.GetMaterialCutsCouple(),IsFwdCSUsed, fwd_TotCS);
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if(std::fabs(corr) > 100.) { Sigma = 0.0; }
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else { Sigma *= corr; }
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//G4cout<<fwd_TotCS<<G4endl;
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/*if (IsFwdCSUsed && IsIntegralModeUsed){ //take the maximum cross section only for charged particle
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G4double e_sigma_max, sigma_max;
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theAdjointCSManager->GetMaxFwdTotalCS(track.GetDefinition(),
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track.GetMaterialCutsCouple(), e_sigma_max, sigma_max);
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if (e_sigma_max > preStepKinEnergy){
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Sigma*=sigma_max/fwd_TotCS;
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}
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}
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*/
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G4double mean_free_path = 1.e60 *mm;
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if (Sigma>0) mean_free_path = 1./Sigma;
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lastCS=Sigma;
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/*
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if(nstep > 100) {
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G4cout << "#* " << track.GetDefinition()->GetParticleName()
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<< " " << GetProcessName()
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<< " Nstep " << nstep
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<< " E(MeV)= " << preStepKinEnergy << " Sig0= " << sig
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<< " sig1= " << Sigma << " mfp= " << mean_free_path << G4endl;
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}
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if (nstep > 20000) {
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exit(1);
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}
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*/
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/*G4cout<<"Sigma "<<Sigma<<G4endl;
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G4cout<<"mean_free_path [mm] "<<mean_free_path/mm<<G4endl;
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*/
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return mean_free_path;
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}
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