Gabriele Cosmo
237 lines
7.7 KiB
C++
237 lines
7.7 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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// $Id: G4ParticleChangeForGamma.hh,v 1.8 2006/08/28 16:10:06 vnivanch Exp $
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// GEANT4 tag $Name: geant4-09-00 $
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//
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//
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// ------------------------------------------------------------
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// GEANT 4 class header file
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//
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//
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// ------------------------------------------------------------
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// 15 April 2005 V.Ivanchenko for gamma EM processes
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//
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// Modified:
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// 30.05.05 : add UpdateStepForAtRest (V.Ivanchenko)
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// 04.12.05 : apply UpdateStepForPostStep in any case (mma)
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// 26.08.06 : Add->Set polarization;
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// add const method to access track;
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// add weight modification (V.Ivanchenko)
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//
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// ------------------------------------------------------------
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//
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// Class Description
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// This class is a concrete class for ParticleChange for gamma processes
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//
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#ifndef G4ParticleChangeForGamma_h
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#define G4ParticleChangeForGamma_h 1
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#include "globals.hh"
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#include "G4ios.hh"
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#include "G4VParticleChange.hh"
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class G4DynamicParticle;
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class G4ParticleChangeForGamma: public G4VParticleChange
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{
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public:
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// default constructor
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G4ParticleChangeForGamma();
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// destructor
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virtual ~G4ParticleChangeForGamma();
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// with description
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// ----------------------------------------------------
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// --- the following methods are for updating G4Step -----
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G4Step* UpdateStepForAtRest(G4Step* pStep);
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G4Step* UpdateStepForPostStep(G4Step* Step);
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// A physics process gives the final state of the particle
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// based on information of G4Track
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void InitializeForPostStep(const G4Track&);
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//Initialize all propoerties by using G4Track information
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void AddSecondary(G4DynamicParticle* aParticle);
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// Add next secondary
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G4double GetProposedKineticEnergy() const;
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void SetProposedKineticEnergy(G4double proposedKinEnergy);
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// Get/Set the final kinetic energy of the current particle.
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const G4ThreeVector& GetProposedMomentumDirection() const;
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void ProposeMomentumDirection(G4double Px, G4double Py, G4double Pz);
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void ProposeMomentumDirection(const G4ThreeVector& Pfinal);
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// Get/Propose the MomentumDirection vector: it is the final momentum direction.
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const G4ThreeVector& GetProposedPolarization() const;
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void ProposePolarization(const G4ThreeVector& dir);
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void ProposePolarization(G4double Px, G4double Py, G4double Pz);
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const G4Track* GetCurrentTrack() const;
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virtual void DumpInfo() const;
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// for Debug
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virtual G4bool CheckIt(const G4Track&);
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protected:
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// hide copy constructor and assignment operaor as protected
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G4ParticleChangeForGamma(const G4ParticleChangeForGamma &right);
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G4ParticleChangeForGamma & operator=(const G4ParticleChangeForGamma &right);
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private:
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const G4Track* currentTrack;
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// The pointer to G4Track
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G4double proposedKinEnergy;
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// The final kinetic energy of the current particle.
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G4ThreeVector proposedMomentumDirection;
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// The final momentum direction of the current particle.
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G4ThreeVector proposedPolarization;
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// The final polarization of the current particle.
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};
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// ------------------------------------------------------------
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inline G4double G4ParticleChangeForGamma::GetProposedKineticEnergy() const
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{
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return proposedKinEnergy;
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}
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inline void G4ParticleChangeForGamma::SetProposedKineticEnergy(G4double energy)
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{
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proposedKinEnergy = energy;
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}
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inline
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const G4ThreeVector& G4ParticleChangeForGamma::GetProposedMomentumDirection() const
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{
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return proposedMomentumDirection;
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}
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inline
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void G4ParticleChangeForGamma::ProposeMomentumDirection(const G4ThreeVector& dir)
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{
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proposedMomentumDirection = dir;
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}
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inline
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void G4ParticleChangeForGamma::ProposeMomentumDirection(G4double Px, G4double Py, G4double Pz)
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{
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proposedMomentumDirection.setX(Px);
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proposedMomentumDirection.setY(Py);
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proposedMomentumDirection.setZ(Pz);
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}
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inline const G4Track* G4ParticleChangeForGamma::GetCurrentTrack() const
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{
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return currentTrack;
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}
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inline
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const G4ThreeVector& G4ParticleChangeForGamma::GetProposedPolarization() const
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{
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return proposedPolarization;
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}
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inline
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void G4ParticleChangeForGamma::ProposePolarization(const G4ThreeVector& dir)
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{
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proposedPolarization = dir;
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}
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inline
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void G4ParticleChangeForGamma::ProposePolarization(G4double Px, G4double Py, G4double Pz)
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{
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proposedPolarization.setX(Px);
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proposedPolarization.setY(Py);
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proposedPolarization.setZ(Pz);
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}
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inline void G4ParticleChangeForGamma::InitializeForPostStep(const G4Track& track)
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{
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theStatusChange = track.GetTrackStatus();
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theLocalEnergyDeposit = 0.0;
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InitializeSecondaries(track);
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theParentWeight = track.GetWeight();
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proposedKinEnergy = track.GetKineticEnergy();
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proposedMomentumDirection = track.GetMomentumDirection();
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proposedPolarization = track.GetPolarization();
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currentTrack = &track;
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}
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//----------------------------------------------------------------
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// method for updating G4Step
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//
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inline G4Step* G4ParticleChangeForGamma::UpdateStepForAtRest(G4Step* pStep)
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{
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pStep->AddTotalEnergyDeposit( theLocalEnergyDeposit );
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pStep->SetStepLength( 0.0 );
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if (!fSetParentWeightByProcess)
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pStep->GetPostStepPoint()->SetWeight( theParentWeight );
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return pStep;
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}
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inline G4Step* G4ParticleChangeForGamma::UpdateStepForPostStep(G4Step* pStep)
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{
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G4StepPoint* pPostStepPoint = pStep->GetPostStepPoint();
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pPostStepPoint->SetKineticEnergy( proposedKinEnergy );
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pPostStepPoint->SetMomentumDirection( proposedMomentumDirection );
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pPostStepPoint->SetPolarization( proposedPolarization );
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// update weight
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// this feature is commented out, it should be overwritten in case
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// if energy loss processes will use biasing
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if (!fSetParentWeightByProcess)
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pPostStepPoint->SetWeight( theParentWeight );
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pStep->AddTotalEnergyDeposit( theLocalEnergyDeposit );
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return pStep;
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}
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inline void G4ParticleChangeForGamma::AddSecondary(G4DynamicParticle* aParticle)
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{
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// create track
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G4Track* aTrack = new G4Track(aParticle, currentTrack->GetGlobalTime(),
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currentTrack->GetPosition());
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// Touchable handle is copied to keep the pointer
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aTrack->SetTouchableHandle(currentTrack->GetTouchableHandle());
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// add a secondary
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G4VParticleChange::AddSecondary(aTrack);
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}
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#endif
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