Gabriele Cosmo
94 lines
3.9 KiB
C++
94 lines
3.9 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: G4FieldTrackUpdator.cc 90644 2015-06-05 13:19:36Z gcosmo $
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//
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// M. Asai - first implementation Apr/28/2006
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//
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//---------------------------------------------------------------
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//
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// G4FieldTrackUpdator.cc
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//
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//---------------------------------------------------------------
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#include "globals.hh"
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#include "G4FieldTrackUpdator.hh"
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#include "G4ThreeVector.hh"
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#include "G4Track.hh"
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#include "G4DynamicParticle.hh"
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#include "G4TrackStatus.hh"
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#include "G4FieldTrack.hh"
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G4FieldTrack* G4FieldTrackUpdator::CreateFieldTrack(const G4Track* trk)
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{
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G4FieldTrack* ftrk = new G4FieldTrack(
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trk->GetPosition(),
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trk->GetGlobalTime(),
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trk->GetMomentumDirection(),
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trk->GetKineticEnergy(),
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trk->GetDynamicParticle()->GetMass(),
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trk->GetDynamicParticle()->GetCharge(),
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trk->GetDynamicParticle()->GetPolarization(),
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0.0 // magnetic dipole moment to be implemented
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);
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return ftrk;
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}
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void G4FieldTrackUpdator::Update(G4FieldTrack* ftrk,const G4Track* trk)
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{
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const G4DynamicParticle* ptDynamicParticle= trk->GetDynamicParticle();
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// The following properties must be updated 1) for each new track, and
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ftrk->SetRestMass(ptDynamicParticle->GetMass());
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// 2) Since ion can lose/gain electrons, this must be done at every step
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ftrk->UpdateState(
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trk->GetPosition(),
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trk->GetGlobalTime(),
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trk->GetMomentumDirection(),
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trk->GetKineticEnergy()
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);
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#ifdef G4CHECK
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if( ( trk->GetMomentum() - ftrk->GetMomentum()).mag2() > 1.e-16 * trk->GetMomentum().mag2() ){
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G4cerr << "ERROR> G4FieldTrackUpdator sees *Disagreement* in momentum " << G4endl;
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G4cout << " FTupdator: Tracking Momentum= " << trk->GetMomentum() << G4endl;
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G4cout << " FTupdator: FldTrack Momentum= " << ftrk->GetMomentum() << G4endl;
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G4cout << " FTupdator: FldTrack-Tracking= " << ftrk->GetMomentum() - trk->GetMomentum() << G4endl;
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}
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#endif
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ftrk->SetProperTimeOfFlight(trk->GetProperTime());
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ftrk->SetChargeAndMoments( ptDynamicParticle->GetCharge(),
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ptDynamicParticle->GetMagneticMoment());
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ftrk->SetPDGSpin( ptDynamicParticle->GetParticleDefinition()->GetPDGSpin() );
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// The charge can change during tracking
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ftrk->SetSpin( ptDynamicParticle->GetPolarization() );
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}
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