wholeNuclearDNA/src/G4ElectronCapture.cc

0001 //
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0025 //
0026 //---------------------------------------------------------------------------
0027 //
0028 // ClassName:   G4ElectronCapture
0029 //
0030 // Description: The process to kill particles to save CPU
0031 //
0032 // Author:      V.Ivanchenko 31 August 2010
0033 //
0034 //----------------------------------------------------------------------------
0035 //
0036 // This example is provided by the Geant4-DNA collaboration
0037 // Any report or published results obtained using the Geant4-DNA software
0038 // and the DNA geometry given in the Geom_DNA example
0039 // shall cite the following Geant4-DNA collaboration publications:
0040 // [1] NIM B 298 (2013) 47-54
0041 // [2] Med. Phys. 37 (2010) 4692-4708
0042 // The Geant4-DNA web site is available at http://geant4-dna.org
0043 //
0044 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0045 //
0046 /// \file G4ElectronCapture.cc
0047 /// \brief Implementation of the G4ElectronCapture class
0048
0049 #include "G4ElectronCapture.hh"
0050
0051 #include "G4Electron.hh"
0052 #include "G4ParticleDefinition.hh"
0053 #include "G4Region.hh"
0054 #include "G4RegionStore.hh"
0055 #include "G4Step.hh"
0056 #include "G4SystemOfUnits.hh"
0057 #include "G4Track.hh"
0058
0059 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0060
0061 G4ElectronCapture::G4ElectronCapture(const G4String& regName, G4double ekinlim)
0062   : G4VDiscreteProcess("eCapture", fElectromagnetic),
0063     fKinEnergyThreshold(ekinlim),
0064     fRegionName(regName),
0065     region(0)
0066 {
0067   if (regName == "" || regName == "world") {
0068     fRegionName = "DefaultRegionForTheWorld";
0069   }
0070   pParticleChange = &fParticleChange;
0071 }
0072
0073 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0074
0075 G4ElectronCapture::~G4ElectronCapture() {}
0076
0077 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0078
0079 void G4ElectronCapture::SetKinEnergyLimit(G4double val)
0080 {
0081   fKinEnergyThreshold = val;
0082   if (verboseLevel > 0) {
0083     G4cout << "### G4ElectronCapture: Tracking cut E(MeV) = " << fKinEnergyThreshold / MeV
0084            << G4endl;
0085   }
0086 }
0087 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0088
0089 void G4ElectronCapture::BuildPhysicsTable(const G4ParticleDefinition&)
0090 {
0091   region = (G4RegionStore::GetInstance())->GetRegion(fRegionName);
0092   if (region && verboseLevel > 0) {
0093     G4cout << "### G4ElectronCapture: Tracking cut E(MeV) = " << fKinEnergyThreshold / MeV
0094            << " is assigned to " << fRegionName << G4endl;
0095   }
0096 }
0097
0098 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0099
0100 G4bool G4ElectronCapture::IsApplicable(const G4ParticleDefinition&)
0101 {
0102   return true;
0103 }
0104
0105 G4double G4ElectronCapture::PostStepGetPhysicalInteractionLength(const G4Track& aTrack, G4double,
0106                                                                  G4ForceCondition* condition)
0107 {
0108   // condition is set to "Not Forced"
0109   *condition = NotForced;
0110
0111   G4double limit = DBL_MAX;
0112   if (region) {
0113     if (aTrack.GetVolume()->GetLogicalVolume()->GetRegion() == region
0114         && aTrack.GetKineticEnergy() < fKinEnergyThreshold)
0115     {
0116       limit = 0.0;
0117     }
0118   }
0119   return limit;
0120 }
0121
0122 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0123
0124 G4VParticleChange* G4ElectronCapture::PostStepDoIt(const G4Track& aTrack, const G4Step&)
0125 {
0126   pParticleChange->Initialize(aTrack);
0127   pParticleChange->ProposeTrackStatus(fStopAndKill);
0128   pParticleChange->ProposeLocalEnergyDeposit(aTrack.GetKineticEnergy());
0129   fParticleChange.SetProposedKineticEnergy(0.0);
0130   return pParticleChange;
0131 }
0132
0133 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0134
0135 G4double G4ElectronCapture::GetMeanFreePath(const G4Track&, G4double, G4ForceCondition*)
0136 {
0137   return DBL_MAX;
0138 }
0139
0140 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......