microelectronics/src/ElectronCapture.cc

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0025 //
0026 //
0027 //---------------------------------------------------------------------------
0028 //
0029 // ClassName:   ElectronCapture
0030 //
0031 // Description: The process to kill particles to save CPU
0032 //
0033 // Author:      V.Ivanchenko 31 August 2010
0034 //
0035 //----------------------------------------------------------------------------
0036 //
0037 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0038 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0039
0040 #include "ElectronCapture.hh"
0041 #include "G4SystemOfUnits.hh"
0042 #include "G4ParticleDefinition.hh"
0043 #include "G4Step.hh"
0044 #include "G4Track.hh"
0045 #include "G4Region.hh"
0046 #include "G4RegionStore.hh"
0047 #include "G4Electron.hh"
0048
0049 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0050
0051 ElectronCapture::ElectronCapture(const G4String& regName, G4double ekinlim)
0052   : G4VDiscreteProcess("eCapture", fElectromagnetic), kinEnergyThreshold(ekinlim),
0053     regionName(regName), region(0)
0054 {
0055   if(regName == "" || regName == "world") {
0056     regionName = "DefaultRegionForTheWorld";
0057   }
0058   pParticleChange = &fParticleChange;
0059 }
0060
0061 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0062
0063 ElectronCapture::~ElectronCapture()
0064 {}
0065
0066 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0067
0068 void ElectronCapture::SetKinEnergyLimit(G4double val)
0069 {
0070   kinEnergyThreshold = val;
0071   if(verboseLevel > 0) {
0072     G4cout << "### ElectronCapture: Tracking cut E(MeV) = "
0073        << kinEnergyThreshold/MeV << G4endl;
0074   }
0075 }
0076 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0077
0078 void ElectronCapture::BuildPhysicsTable(const G4ParticleDefinition&)
0079 {
0080   region = (G4RegionStore::GetInstance())->GetRegion(regionName);
0081   if(region && verboseLevel > 0) {
0082     G4cout << "### ElectronCapture: Tracking cut E(MeV) = "
0083        << kinEnergyThreshold/MeV << " is assigned to " << regionName
0084        << G4endl;
0085   }
0086 }
0087
0088 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0089
0090 G4bool ElectronCapture::IsApplicable(const G4ParticleDefinition&)
0091 {
0092   return true;
0093 }
0094
0095 G4double
0096 ElectronCapture::PostStepGetPhysicalInteractionLength(const G4Track& aTrack,
0097                             G4double,
0098                             G4ForceCondition* condition)
0099 {
0100   // condition is set to "Not Forced"
0101   *condition = NotForced;
0102
0103   G4double limit = DBL_MAX;
0104   if(region) {
0105     if(aTrack.GetVolume()->GetLogicalVolume()->GetRegion() == region &&
0106      aTrack.GetKineticEnergy() < kinEnergyThreshold) { limit = 0.0; }
0107   }
0108   return limit;
0109 }
0110
0111 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0112
0113 G4VParticleChange* ElectronCapture::PostStepDoIt(const G4Track& aTrack,
0114                            const G4Step&)
0115 {
0116   pParticleChange->Initialize(aTrack);
0117   pParticleChange->ProposeTrackStatus(fStopAndKill);
0118   pParticleChange->ProposeLocalEnergyDeposit(aTrack.GetKineticEnergy());
0119   fParticleChange.SetProposedKineticEnergy(0.0);
0120   return pParticleChange;
0121 }
0122
0123 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0124
0125 G4double ElectronCapture::GetMeanFreePath(const G4Track&,G4double,
0126                         G4ForceCondition*)
0127 {
0128   return DBL_MAX;
0129 }
0130
0131 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0132
0133