| Geant4 Cross Reference |
1 //
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24 // ********************************************************************
25 //
26 //
27 //
28 // --------------------------------------------------------------
29 // History
30 //
31 // 15-04-98 first implementation, mma
32 // 07-04-03 migrade to cut per region (V.Ivanchenko)
33 // 18-09-03 substitute manager for the loss tables (V.Ivanchenko)
34 // 23-01-04 add protection for charged geantino in range cut (H.Kurashige)
35 // 09-09-04 tracking cut applied only if Rmin or Emin > DBL_MIN
36 // 21-01-11 changed order of checks: 1st energy tracking cut, 2nd track
37 // length, 3d time cut, 4th range for charged particles
38 // with non-zero mass; removed string comparisons (V.Ivanchenko)
39 // --------------------------------------------------------------
40
41 #include "G4UserSpecialCuts.hh"
42 #include "G4TransportationProcessType.hh"
43
44 #include "G4PhysicalConstants.hh"
45 #include "G4Step.hh"
46 #include "G4UserLimits.hh"
47 #include "G4VParticleChange.hh"
48 #include "G4LossTableManager.hh"
49
50 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
51
52 G4UserSpecialCuts::G4UserSpecialCuts(const G4String& aName)
53 : G4VProcess(aName, fGeneral )
54 {
55 // set Process Sub Type
56 SetProcessSubType(static_cast<int>(USER_SPECIAL_CUTS));
57
58 if (verboseLevel>0)
59 {
60 G4cout << GetProcessName() << " is created "<< G4endl;
61 }
62 theLossTableManager = G4LossTableManager::Instance();
63 }
64
65 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
66
67 G4UserSpecialCuts::~G4UserSpecialCuts()
68 {
69 }
70
71 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
72
73 G4UserSpecialCuts::G4UserSpecialCuts(G4UserSpecialCuts& right)
74 : G4VProcess(right)
75 {
76 theLossTableManager = G4LossTableManager::Instance();
77 }
78
79 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
80
81 G4double G4UserSpecialCuts::
82 PostStepGetPhysicalInteractionLength( const G4Track& aTrack,
83 G4double, // previousStepSize
84 G4ForceCondition* condition )
85 {
86 // condition is set to "Not Forced"
87 *condition = NotForced;
88
89 G4double ProposedStep = DBL_MAX;
90 G4UserLimits* pUserLimits =
91 aTrack.GetVolume()->GetLogicalVolume()->GetUserLimits();
92 if (pUserLimits)
93 {
94 // check max kinetic energy first
95 //
96 G4double Ekine = aTrack.GetKineticEnergy();
97 if(Ekine <= pUserLimits->GetUserMinEkine(aTrack)) { return 0.; }
98
99 // max track length
100 //
101 ProposedStep = (pUserLimits->GetUserMaxTrackLength(aTrack)
102 - aTrack.GetTrackLength());
103 if (ProposedStep < 0.) { return 0.; }
104
105 // max time limit
106 //
107 G4double tlimit = pUserLimits->GetUserMaxTime(aTrack);
108 if(tlimit < DBL_MAX) {
109 G4double beta = (aTrack.GetDynamicParticle()->GetTotalMomentum())
110 /(aTrack.GetTotalEnergy());
111 G4double dTime = (tlimit - aTrack.GetGlobalTime());
112 G4double temp = beta*c_light*dTime;
113 if (temp < 0.) { return 0.; }
114 if (ProposedStep > temp) { ProposedStep = temp; }
115 }
116
117 // min remaining range
118 // (only for charged particle except for chargedGeantino)
119 //
120 G4double Rmin = pUserLimits->GetUserMinRange(aTrack);
121 if (Rmin > DBL_MIN) {
122 G4ParticleDefinition* Particle = aTrack.GetDefinition();
123 if ( (Particle->GetPDGCharge() != 0.) && (Particle->GetPDGMass() > 0.0))
124 {
125 const G4MaterialCutsCouple* couple = aTrack.GetMaterialCutsCouple();
126 G4double RangeNow = theLossTableManager->GetRange(Particle,Ekine,couple);
127 G4double temp = RangeNow - Rmin;
128 if (temp < 0.) { return 0.; }
129 if (ProposedStep > temp) { ProposedStep = temp; }
130 }
131 }
132 }
133 return ProposedStep;
134 }
135
136 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
137
138 G4VParticleChange*
139 G4UserSpecialCuts::PostStepDoIt( const G4Track& aTrack,
140 const G4Step& )
141 //
142 // Kill the current particle, if requested by G4UserLimits
143 //
144 {
145 aParticleChange.Initialize(aTrack);
146 aParticleChange.ProposeEnergy(0.) ;
147 aParticleChange.ProposeLocalEnergyDeposit(aTrack.GetKineticEnergy()) ;
148 aParticleChange.ProposeTrackStatus(fStopAndKill);
149 return &aParticleChange;
150 }
151
152 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
153
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