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// $Id: G4NeutronTrackingCut.cc,v 1.4 2006/11/24 16:30:13 gunter Exp $
// GEANT4 tag $Name: HEAD $
//
//---------------------------------------------------------------------------
//
// ClassName:   G4NeutronTrackingCut
//
// Author: Nov 2006 G.Folger
//
//
//----------------------------------------------------------------------------
//

#include "G4NeutronTrackingCut.hh"

#include "G4ParticleDefinition.hh"
#include "G4ProcessManager.hh"

#include "G4Neutron.hh"
#include "G4NeutronKiller.hh"

G4NeutronTrackingCut::G4NeutronTrackingCut(const G4String& name, G4int ver)
  :  G4VPhysicsConstructor(name), verbose(ver), wasActivated(false)
{}

G4NeutronTrackingCut::~G4NeutronTrackingCut()
{
  if(wasActivated) 
  {
      delete pNeutronKiller;
  }    
}

void G4NeutronTrackingCut::ConstructParticle()
{

// G4cout << "G4NeutronTrackingCut::ConstructParticle" << G4endl;

  G4Neutron::NeutronDefinition();
}

void G4NeutronTrackingCut::ConstructProcess()
{
  G4double timeLimit     =10*microsecond;
//  G4double kineticEnergylimit =1*keV;
  if(wasActivated) return;
  wasActivated = true;

  // Add Decay Process
  pNeutronKiller = new G4NeutronKiller();
  G4ParticleDefinition * particle = G4Neutron::Neutron();
  G4ProcessManager * pmanager = particle->GetProcessManager();
//      if(verbose > 1)
        G4cout << "### Adding Neutron tracking cut for " << particle->GetParticleName() << G4endl;
	G4cout << "###  cut value is " << timeLimit/microsecond << " microseconds" <<  G4endl;
      pmanager -> AddDiscreteProcess(pNeutronKiller);
//      pNeutronKiller->SetKinEnergyLimit(kineticEnergylimit);
      pNeutronKiller->SetTimeLimit(timeLimit);
}