G4NeutronKiller.cc

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//
//---------------------------------------------------------------------------
//
// ClassName:   G4NeutronKiller
//
// Description: The process to kill particles to save CPU
//
// Author:      V.Ivanchenko 26/09/00 for HARP software
//
//----------------------------------------------------------------------------
//
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#include "G4NeutronKiller.hh"
 
#include "G4SystemOfUnits.hh"
#include "G4NeutronKillerMessenger.hh"
#include "G4TransportationProcessType.hh"
 
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G4NeutronKiller::G4NeutronKiller(const G4String& processName, G4ProcessType aType)
 : G4VDiscreteProcess(processName, aType)
{
  // set Process Sub Type
  SetProcessSubType(NEUTRON_KILLER);
 
  kinEnergyThreshold = 0.0;
  timeThreshold = DBL_MAX;
  pMess = new G4NeutronKillerMessenger(this);
}
 
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G4NeutronKiller::~G4NeutronKiller() 
{ 
  delete pMess; 
}
 
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G4bool G4NeutronKiller::IsApplicable(const G4ParticleDefinition& particle)
{
  return (particle.GetParticleName() == "neutron");
}
 
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void G4NeutronKiller::SetTimeLimit(G4double val)
{
  timeThreshold = val;
  if(verboseLevel > 0) 
    G4cout << "### G4NeutronKiller: timeLimit(ns) = " 
       << timeThreshold/ns << G4endl;
}
 
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void G4NeutronKiller::SetKinEnergyLimit(G4double val)
{
  kinEnergyThreshold = val;
  if(verboseLevel > 0) 
    G4cout << "### G4NeutronKiller: Tracking cut E(MeV) = " 
       << kinEnergyThreshold/MeV << G4endl;
}
 
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G4double G4NeutronKiller::PostStepGetPhysicalInteractionLength( 
                 const G4Track& aTrack,
                 G4double, G4ForceCondition* condition)
{
  // condition is set to "Not Forced"
  *condition = NotForced;
  
  return (aTrack.GetGlobalTime() > timeThreshold || 
          aTrack.GetKineticEnergy() < kinEnergyThreshold) ? 0.0 : DBL_MAX;
}
 
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G4double G4NeutronKiller::GetMeanFreePath(const G4Track&,G4double,
                      G4ForceCondition*)
{
  return DBL_MAX;
}    
 
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G4VParticleChange* G4NeutronKiller::PostStepDoIt(const G4Track& aTrack, 
                         const G4Step&)
{
  pParticleChange->Initialize(aTrack);
  pParticleChange->ProposeTrackStatus(fStopAndKill);
  return pParticleChange;
}
 
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