G4ThermalNeutrons.cc

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// $Id: G4ThermalNeutrons.cc 70995 2013-06-09 00:56:34Z adotti $
//
//---------------------------------------------------------------------------
//
// ClassName:   G4ThermalNeutrons
//
// Author: 4 May 2017 V. Ivanchenko
//
// Modified:
//
//----------------------------------------------------------------------------
//

#include "G4ThermalNeutrons.hh"

#include "G4ParticleDefinition.hh"
#include "G4ProcessManager.hh"
#include "G4HadronicProcess.hh"

#include "G4ParticleHPThermalScattering.hh"
#include "G4ParticleHPThermalScatteringData.hh"

#include "G4BuilderType.hh"

#include "G4SystemOfUnits.hh"

G4ThermalNeutrons::G4ThermalNeutrons(G4int ver) :
  G4VHadronPhysics("G4ThermalNeutrons"), verbose(ver) {
}

G4ThermalNeutrons::~G4ThermalNeutrons() {}

void G4ThermalNeutrons::ConstructProcess() {

  if(verbose > 0) {
    G4cout << "### " << GetPhysicsName() << " Construct Processes " << G4endl;
  }
  G4Neutron* part = G4Neutron::Neutron();
  G4HadronicProcess* hpel = FindElasticProcess(part);
  if(!hpel) {
    G4cout << "### " << GetPhysicsName() 
     << " WARNING: Fail to add thermal neutron scattering" << G4endl;
    return;
  }

  G4int ni = (hpel->GetHadronicInteractionList()).size();
  if(ni < 1) {
    G4cout << "### " << GetPhysicsName() 
     << " WARNING: Fail to add thermal neutron scattering - Nint= " 
     << ni << G4endl;
    return;
  }
  (hpel->GetHadronicInteractionList())[ni-1]->SetMinEnergy(4*CLHEP::eV);

  hpel->RegisterMe(new G4ParticleHPThermalScattering());
  hpel->AddDataSet(new G4ParticleHPThermalScatteringData());
  
}