G4FieldTrackUpdator Class Reference

#include <G4FieldTrackUpdator.hh>

Static Public Member Functions
static G4FieldTrack *	CreateFieldTrack (const G4Track *)
static void	Update (G4FieldTrack *, const G4Track *)

Detailed Description

Definition at line 43 of file G4FieldTrackUpdator.hh.

Member Function Documentation

G4FieldTrack * G4FieldTrackUpdator::CreateFieldTrack ( const G4Track *  trk )

static

Definition at line 45 of file G4FieldTrackUpdator.cc.

{
  G4FieldTrack* ftrk = new G4FieldTrack(
    trk->GetPosition(),
    trk->GetGlobalTime(),
    trk->GetMomentumDirection(),
    trk->GetKineticEnergy(),
    trk->GetDynamicParticle()->GetMass(),
    trk->GetDynamicParticle()->GetCharge(),
    trk->GetDynamicParticle()->GetPolarization(),
    0.0                   // magnetic dipole moment to be implemented
    );
  return ftrk;
}

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void G4FieldTrackUpdator::Update ( G4FieldTrack *  ftrk, const G4Track *  trk  )

static

Definition at line 60 of file G4FieldTrackUpdator.cc.

{
  const G4DynamicParticle* ptDynamicParticle= trk->GetDynamicParticle();

  // The following properties must be updated 1) for each new track, and 
  ftrk->SetRestMass(ptDynamicParticle->GetMass());   
  // 2) Since ion can lose/gain electrons, this must be done at every step
  
  ftrk->UpdateState(
    trk->GetPosition(),     
    trk->GetGlobalTime(),
    trk->GetMomentumDirection(),
    trk->GetKineticEnergy()
    );

#ifdef G4CHECK  
  if( ( trk->GetMomentum() - ftrk->GetMomentum()).mag2() > 1.e-16 * trk->GetMomentum().mag2() ){
     G4cerr << "ERROR> G4FieldTrackUpdator sees *Disagreement* in momentum " << G4endl;
     G4cout << "  FTupdator: Tracking Momentum= " << trk->GetMomentum() << G4endl;
     G4cout << "  FTupdator: FldTrack Momentum= " << ftrk->GetMomentum() << G4endl;
     G4cout << "  FTupdator: FldTrack-Tracking= " << ftrk->GetMomentum() - trk->GetMomentum() << G4endl;
  }
#endif

  ftrk->SetProperTimeOfFlight(trk->GetProperTime());

  ftrk->SetChargeAndMoments( ptDynamicParticle->GetCharge(),
                             ptDynamicParticle->GetMagneticMoment()); 
  ftrk->SetPDGSpin(          ptDynamicParticle->GetParticleDefinition()->GetPDGSpin() ); 
   // The charge can change during tracking
  ftrk->SetSpin( ptDynamicParticle->GetPolarization() );
}

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The documentation for this class was generated from the following files:

• geant4.10.03.p01/source/track/include/G4FieldTrackUpdator.hh
• geant4.10.03.p01/source/track/src/G4FieldTrackUpdator.cc