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