Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/examples/advanced/microelectronics/src/G4ElectronCapture.cc

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  1 //
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 25 //
 26 //
 27 //---------------------------------------------------------------------------
 28 //
 29 // ClassName:   G4ElectronCapture
 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 "G4ElectronCapture.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 G4ElectronCapture::G4ElectronCapture(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 G4ElectronCapture::~G4ElectronCapture() 
 64 {}
 65 
 66 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 67 
 68 void G4ElectronCapture::SetKinEnergyLimit(G4double val)
 69 {
 70   kinEnergyThreshold = val;
 71   if(verboseLevel > 0) {
 72     G4cout << "### G4ElectronCapture: Tracking cut E(MeV) = " 
 73      << kinEnergyThreshold/MeV << G4endl;
 74   }
 75 }
 76 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 77 
 78 void G4ElectronCapture::BuildPhysicsTable(const G4ParticleDefinition&)
 79 {
 80   region = (G4RegionStore::GetInstance())->GetRegion(regionName);
 81   if(region && verboseLevel > 0) {
 82     G4cout << "### G4ElectronCapture: Tracking cut E(MeV) = " 
 83      << kinEnergyThreshold/MeV << " is assigned to " << regionName 
 84      << G4endl;
 85   }
 86 }
 87 
 88 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 89 
 90 G4bool G4ElectronCapture::IsApplicable(const G4ParticleDefinition&)
 91 {
 92   return true;
 93 }
 94 
 95 G4double 
 96 G4ElectronCapture::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* G4ElectronCapture::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 G4ElectronCapture::GetMeanFreePath(const G4Track&,G4double,
126               G4ForceCondition*)
127 {
128   return DBL_MAX;
129 }    
130 
131 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
132 
133 
134