G4QGSPNeutronBuilder.cc

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// $Id: G4QGSPNeutronBuilder.cc 75290 2013-10-30 09:20:47Z gcosmo $
//
//---------------------------------------------------------------------------
//
// ClassName:   G4QGSPNeutronBuilder
//
// Author: 2002 J.P. Wellisch
//
// Modified:
// 17.11.2010 G.Folger, use G4CrossSectionPairGG for relativistic rise of cross
//             section at high energies.
// 30.03.2009 V.Ivanchenko create cross section by new
//
//----------------------------------------------------------------------------
//
#include "G4QGSPNeutronBuilder.hh"
#include "G4SystemOfUnits.hh"
#include "G4ParticleDefinition.hh"
#include "G4ParticleTable.hh"
#include "G4ProcessManager.hh"
#include "G4NeutronInelasticCrossSection.hh"
#include "G4BGGNucleonInelasticXS.hh"
#include "G4ExcitationHandler.hh"


G4QGSPNeutronBuilder::
G4QGSPNeutronBuilder(G4bool quasiElastic) 
{
  theMin = 12*GeV;
  theModel = new G4TheoFSGenerator("QGSP");

  theStringModel = new G4QGSModel< G4QGSParticipants >;
  theStringDecay = new G4ExcitedStringDecay(theQGSM = new G4QGSMFragmentation);
  theStringModel->SetFragmentationModel(theStringDecay);

  theCascade = new G4GeneratorPrecompoundInterface;
  thePreEquilib = new G4PreCompoundModel(new G4ExcitationHandler);
  theCascade->SetDeExcitation(thePreEquilib);  

  theModel->SetTransport(theCascade);
  theModel->SetHighEnergyGenerator(theStringModel);
  if (quasiElastic)
  {
     theQuasiElastic=new G4QuasiElasticChannel;
     theModel->SetQuasiElasticChannel(theQuasiElastic);
  } else 
  {  theQuasiElastic=0;}  
}

G4QGSPNeutronBuilder::~G4QGSPNeutronBuilder() 
{
  delete theStringDecay;
  delete theStringModel;
  delete thePreEquilib;
  delete theCascade;
  if ( theQuasiElastic ) delete theQuasiElastic;
  delete theModel;
  delete theQGSM;
}

void G4QGSPNeutronBuilder::
Build(G4HadronElasticProcess * )
{
}

void G4QGSPNeutronBuilder::
Build(G4HadronFissionProcess * )
{
}

void G4QGSPNeutronBuilder::
Build(G4HadronCaptureProcess * )
{
}

void G4QGSPNeutronBuilder::
Build(G4NeutronInelasticProcess * aP)
{
  theModel->SetMinEnergy(theMin);
  theModel->SetMaxEnergy(100*TeV);
  aP->RegisterMe(theModel);
   aP->AddDataSet(new G4BGGNucleonInelasticXS(G4Neutron::Neutron()));
}

// 2002 by J.P. Wellisch