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25 // 25 //
26 // G4FieldTrackUpdator class implementation 26 // G4FieldTrackUpdator class implementation
27 // 27 //
28 // Author: M.Asai, 28 April 2006 28 // Author: M.Asai, 28 April 2006
29 // ------------------------------------------- 29 // --------------------------------------------------------------------
30 30
31 #include "globals.hh" 31 #include "globals.hh"
32 #include "G4FieldTrackUpdator.hh" 32 #include "G4FieldTrackUpdator.hh"
33 #include "G4ThreeVector.hh" 33 #include "G4ThreeVector.hh"
34 #include "G4Track.hh" 34 #include "G4Track.hh"
35 #include "G4DynamicParticle.hh" 35 #include "G4DynamicParticle.hh"
36 #include "G4TrackStatus.hh" 36 #include "G4TrackStatus.hh"
37 #include "G4FieldTrack.hh" 37 #include "G4FieldTrack.hh"
38 38
39 //-------------------------------------------- 39 //---------------------------------------------------------------------
40 G4FieldTrack* G4FieldTrackUpdator::CreateField 40 G4FieldTrack* G4FieldTrackUpdator::CreateFieldTrack(const G4Track* trk)
41 { 41 {
42 return new G4FieldTrack( 42 return new G4FieldTrack(
43 trk->GetPosition(), trk->GetGlobalTime(), 43 trk->GetPosition(), trk->GetGlobalTime(), trk->GetMomentumDirection(),
44 trk->GetKineticEnergy(), trk->GetDynamicPa 44 trk->GetKineticEnergy(), trk->GetDynamicParticle()->GetMass(),
45 trk->GetDynamicParticle()->GetCharge(), 45 trk->GetDynamicParticle()->GetCharge(),
46 trk->GetDynamicParticle()->GetPolarization 46 trk->GetDynamicParticle()->GetPolarization(),
47 0.0 // magnetic dipole moment to be imple 47 0.0 // magnetic dipole moment to be implemented
48 ); 48 );
49 } 49 }
50 50
51 //-------------------------------------------- 51 //---------------------------------------------------------------------
52 void G4FieldTrackUpdator::Update(G4FieldTrack* 52 void G4FieldTrackUpdator::Update(G4FieldTrack* ftrk, const G4Track* trk)
53 { 53 {
54 const G4DynamicParticle* ptDynamicParticle = 54 const G4DynamicParticle* ptDynamicParticle = trk->GetDynamicParticle();
55 55
56 // The following properties must be updated 56 // The following properties must be updated 1) for each new track, and
57 ftrk->SetRestMass(ptDynamicParticle->GetMass 57 ftrk->SetRestMass(ptDynamicParticle->GetMass());
58 // 2) Since ion can lose/gain electrons, thi 58 // 2) Since ion can lose/gain electrons, this must be done at every step
59 59
60 ftrk->UpdateState(trk->GetPosition(), trk->G 60 ftrk->UpdateState(trk->GetPosition(), trk->GetGlobalTime(),
61 trk->GetMomentumDirection( 61 trk->GetMomentumDirection(), trk->GetKineticEnergy());
62 62
63 #ifdef G4CHECK 63 #ifdef G4CHECK
64 if((trk->GetMomentum() - ftrk->GetMomentum() 64 if((trk->GetMomentum() - ftrk->GetMomentum()).mag2() >
65 1.e-16 * trk->GetMomentum().mag2()) 65 1.e-16 * trk->GetMomentum().mag2())
66 { 66 {
67 G4cerr << "ERROR> G4FieldTrackUpdator sees 67 G4cerr << "ERROR> G4FieldTrackUpdator sees *Disagreement* in momentum "
68 << G4endl; 68 << G4endl;
69 G4cout << " FTupdator: Tracking Momentum= 69 G4cout << " FTupdator: Tracking Momentum= " << trk->GetMomentum()
70 << G4endl; 70 << G4endl;
71 G4cout << " FTupdator: FldTrack Momentum= 71 G4cout << " FTupdator: FldTrack Momentum= " << ftrk->GetMomentum()
72 << G4endl; 72 << G4endl;
73 G4cout << " FTupdator: FldTrack-Tracking= 73 G4cout << " FTupdator: FldTrack-Tracking= "
74 << ftrk->GetMomentum() - trk->GetMo 74 << ftrk->GetMomentum() - trk->GetMomentum() << G4endl;
75 } 75 }
76 #endif 76 #endif
77 77
78 ftrk->SetProperTimeOfFlight(trk->GetProperTi 78 ftrk->SetProperTimeOfFlight(trk->GetProperTime());
79 79
80 ftrk->SetChargeAndMoments(ptDynamicParticle- 80 ftrk->SetChargeAndMoments(ptDynamicParticle->GetCharge(),
81 ptDynamicParticle- 81 ptDynamicParticle->GetMagneticMoment());
82 ftrk->SetPDGSpin(ptDynamicParticle->GetParti 82 ftrk->SetPDGSpin(ptDynamicParticle->GetParticleDefinition()->GetPDGSpin());
83 // The charge can change during tracking 83 // The charge can change during tracking
84 ftrk->SetSpin(ptDynamicParticle->GetPolariza 84 ftrk->SetSpin(ptDynamicParticle->GetPolarization());
85 } 85 }
86 86