splitting/src/G4ElectronCapture.cc

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0029 // Med. Phys. 37 (2010) 4692-4708
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0031 //
0032 //---------------------------------------------------------------------------
0033 //
0034 // ClassName:   G4ElectronCapture
0035 //
0036 // Description: The process to kill particles to save CPU
0037 //
0038 // Author:      V.Ivanchenko 31 August 2010
0039 //
0040 //----------------------------------------------------------------------------
0041 //
0042 /// \file G4ElectronCapture.cc
0043 /// \brief Implementation of the G4ElectronCapture class
0044
0045 #include "G4ElectronCapture.hh"
0046
0047 #include "G4Electron.hh"
0048 #include "G4ParticleDefinition.hh"
0049 #include "G4Region.hh"
0050 #include "G4RegionStore.hh"
0051 #include "G4Step.hh"
0052 #include "G4SystemOfUnits.hh"
0053 #include "G4Track.hh"
0054
0055 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0056
0057 G4ElectronCapture::G4ElectronCapture(const G4String& regName, G4double ekinlim)
0058   : G4VDiscreteProcess("eCapture", fElectromagnetic),
0059     fKinEnergyThreshold(ekinlim),
0060     fRegionName(regName),
0061     fpRegion(0)
0062 {
0063   if (regName == "" || regName == "world") {
0064     fRegionName = "DefaultRegionForTheWorld";
0065   }
0066   pParticleChange = &fParticleChange;
0067 }
0068
0069 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0070
0071 G4ElectronCapture::~G4ElectronCapture() {}
0072
0073 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0074
0075 void G4ElectronCapture::SetKinEnergyLimit(G4double val)
0076 {
0077   fKinEnergyThreshold = val;
0078   if (verboseLevel > 0) {
0079     G4cout << "### G4ElectronCapture: Tracking cut E(MeV) = " << fKinEnergyThreshold / MeV
0080            << G4endl;
0081   }
0082 }
0083
0084 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0085
0086 void G4ElectronCapture::BuildPhysicsTable(const G4ParticleDefinition&)
0087 {
0088   fpRegion = (G4RegionStore::GetInstance())->GetRegion(fRegionName);
0089   if (fpRegion && verboseLevel > 0) {
0090     G4cout << "### G4ElectronCapture: Tracking cut E(MeV) = " << fKinEnergyThreshold / MeV
0091            << " is assigned to " << fRegionName << G4endl;
0092   }
0093 }
0094
0095 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0096
0097 G4bool G4ElectronCapture::IsApplicable(const G4ParticleDefinition&)
0098 {
0099   return true;
0100 }
0101
0102 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0103
0104 G4double G4ElectronCapture::PostStepGetPhysicalInteractionLength(const G4Track& aTrack, G4double,
0105                                                                  G4ForceCondition* condition)
0106 {
0107   // condition is set to "Not Forced"
0108   *condition = NotForced;
0109
0110   G4double limit = DBL_MAX;
0111   if (fpRegion) {
0112     if (aTrack.GetVolume()->GetLogicalVolume()->GetRegion() == fpRegion
0113         && aTrack.GetKineticEnergy() < fKinEnergyThreshold)
0114     {
0115       limit = 0.0;
0116     }
0117   }
0118   return limit;
0119 }
0120
0121 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0122
0123 G4VParticleChange* G4ElectronCapture::PostStepDoIt(const G4Track& aTrack, const G4Step&)
0124 {
0125   pParticleChange->Initialize(aTrack);
0126   pParticleChange->ProposeTrackStatus(fStopAndKill);
0127   pParticleChange->ProposeLocalEnergyDeposit(aTrack.GetKineticEnergy());
0128   fParticleChange.SetProposedKineticEnergy(0.0);
0129   return pParticleChange;
0130 }
0131
0132 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0133
0134 G4double G4ElectronCapture::GetMeanFreePath(const G4Track&, G4double, G4ForceCondition*)
0135 {
0136   return DBL_MAX;
0137 }