Geant4 Cross Reference

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Geant4/processes/biasing/generic/src/G4ILawCommonTruncatedExp.cc

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 25 //
 26 // G4ILawCommonTruncatedExp
 27 // --------------------------------------------------------------------
 28 
 29 #include "G4ILawCommonTruncatedExp.hh"
 30 #include "G4Track.hh"
 31 
 32 #include "G4BOptnForceCommonTruncatedExp.hh"
 33 #include "G4BiasingProcessInterface.hh"
 34 
 35 
 36 G4ILawCommonTruncatedExp::G4ILawCommonTruncatedExp(const G4String& name)
 37   : G4VBiasingInteractionLaw(name),
 38     fExpInteractionLaw("expLawFor"+name)
 39 {}
 40 
 41 G4ILawCommonTruncatedExp::~G4ILawCommonTruncatedExp()
 42 {}
 43 
 44 G4double G4ILawCommonTruncatedExp::ComputeEffectiveCrossSectionAt(G4double distance) const
 45 {
 46   return fExpInteractionLaw.ComputeEffectiveCrossSectionAt( distance ) * fSelectedProcessXSfraction;
 47 }
 48 
 49 G4double G4ILawCommonTruncatedExp::ComputeNonInteractionProbabilityAt(G4double distance) const
 50 {
 51   G4double niProba = fExpInteractionLaw.ComputeNonInteractionProbabilityAt( distance );
 52   
 53   if ( niProba <= 0.0 )
 54   {
 55     G4ExceptionDescription ed;
 56     ed << " Negative probability for `" << GetName() << "' p = " << niProba << " distance = " << distance <<  " !!! " << G4endl;
 57     G4Exception(" G4ILawCommonTruncatedExp::ComputeNonInteractionProbabilityAt(...)",
 58                 "BIAS.GEN.08", JustWarning, ed);
 59   }
 60 
 61   return niProba;
 62 }
 63 
 64 G4double G4ILawCommonTruncatedExp::SampleInteractionLength()
 65 {
 66   fInteractionDistance = fExpInteractionLaw.SampleInteractionLength();
 67   return fInteractionDistance;
 68 }
 69 
 70 G4double G4ILawCommonTruncatedExp::UpdateInteractionLengthForStep(G4double truePathLength)
 71 {
 72   fInteractionDistance = fExpInteractionLaw.UpdateInteractionLengthForStep(truePathLength);
 73   return fInteractionDistance;
 74 }
 75