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25 //
26 //
27 //---------------------------------------------------------------------------
28 //
29 // ClassName: ElectronCapture
30 //
31 // Description: The process to kill particles to save CPU
32 //
33 // Author: V.Ivanchenko 31 August 2010
34 //
35 //----------------------------------------------------------------------------
36 //
37 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
38 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
39
40 #include "ElectronCapture.hh"
41 #include "G4SystemOfUnits.hh"
42 #include "G4ParticleDefinition.hh"
43 #include "G4Step.hh"
44 #include "G4Track.hh"
45 #include "G4Region.hh"
46 #include "G4RegionStore.hh"
47 #include "G4Electron.hh"
48
49 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
50
51 ElectronCapture::ElectronCapture(const G4String& regName, G4double ekinlim)
52 : G4VDiscreteProcess("eCapture", fElectromagnetic), kinEnergyThreshold(ekinlim),
53 regionName(regName), region(0)
54 {
55 if(regName == "" || regName == "world") {
56 regionName = "DefaultRegionForTheWorld";
57 }
58 pParticleChange = &fParticleChange;
59 }
60
61 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
62
63 ElectronCapture::~ElectronCapture()
64 {}
65
66 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
67
68 void ElectronCapture::SetKinEnergyLimit(G4double val)
69 {
70 kinEnergyThreshold = val;
71 if(verboseLevel > 0) {
72 G4cout << "### ElectronCapture: Tracking cut E(MeV) = "
73 << kinEnergyThreshold/MeV << G4endl;
74 }
75 }
76 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
77
78 void ElectronCapture::BuildPhysicsTable(const G4ParticleDefinition&)
79 {
80 region = (G4RegionStore::GetInstance())->GetRegion(regionName);
81 if(region && verboseLevel > 0) {
82 G4cout << "### ElectronCapture: Tracking cut E(MeV) = "
83 << kinEnergyThreshold/MeV << " is assigned to " << regionName
84 << G4endl;
85 }
86 }
87
88 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
89
90 G4bool ElectronCapture::IsApplicable(const G4ParticleDefinition&)
91 {
92 return true;
93 }
94
95 G4double
96 ElectronCapture::PostStepGetPhysicalInteractionLength(const G4Track& aTrack,
97 G4double,
98 G4ForceCondition* condition)
99 {
100 // condition is set to "Not Forced"
101 *condition = NotForced;
102
103 G4double limit = DBL_MAX;
104 if(region) {
105 if(aTrack.GetVolume()->GetLogicalVolume()->GetRegion() == region &&
106 aTrack.GetKineticEnergy() < kinEnergyThreshold) { limit = 0.0; }
107 }
108 return limit;
109 }
110
111 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
112
113 G4VParticleChange* ElectronCapture::PostStepDoIt(const G4Track& aTrack,
114 const G4Step&)
115 {
116 pParticleChange->Initialize(aTrack);
117 pParticleChange->ProposeTrackStatus(fStopAndKill);
118 pParticleChange->ProposeLocalEnergyDeposit(aTrack.GetKineticEnergy());
119 fParticleChange.SetProposedKineticEnergy(0.0);
120 return pParticleChange;
121 }
122
123 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
124
125 G4double ElectronCapture::GetMeanFreePath(const G4Track&,G4double,
126 G4ForceCondition*)
127 {
128 return DBL_MAX;
129 }
130
131 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
132
133
134