G4FTFBinaryPionBuilder.cc

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// $Id: G4FTFBinaryPionBuilder.cc 62122 2012-10-01 09:33:38Z gcosmo $
// GEANT4 tag $Name: not supported by cvs2svn $
//
//---------------------------------------------------------------------------
//
// ClassName:   G4FTFBinaryPionBuilder
//
// Author: 2011 G.Folger
//
// Modified:
// 18.11.2010 G.Folger, use G4CrossSectionPairGG for relativistic rise of cross
//             section at high energies.
// 30.03.2009 V.Ivanchenko create cross section by new
//
//----------------------------------------------------------------------------
//
#include "G4FTFBinaryPionBuilder.hh"
#include "G4SystemOfUnits.hh"
#include "G4ParticleDefinition.hh"
#include "G4ParticleTable.hh"
#include "G4ProcessManager.hh"
#include "G4PiNuclearCrossSection.hh"
#include "G4CrossSectionPairGG.hh"

G4FTFBinaryPionBuilder::
G4FTFBinaryPionBuilder(G4bool quasiElastic)
{
  thePiData = new G4CrossSectionPairGG(new G4PiNuclearCrossSection(), 91*GeV);
  theMin = 4*GeV;
  theModel = new G4TheoFSGenerator("FTFB");

  theStringModel = new G4FTFModel;
  theStringDecay = new G4ExcitedStringDecay(new G4LundStringFragmentation);
  theStringModel->SetFragmentationModel(theStringDecay);

  theCascade = new G4BinaryCascade;
  thePreEquilib = new G4PreCompoundModel(new G4ExcitationHandler);
  theCascade->SetDeExcitation(thePreEquilib);  

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

  theModel->SetTransport(theCascade);
  theModel->SetMinEnergy(theMin);
  theModel->SetMaxEnergy(100*TeV);
}

G4FTFBinaryPionBuilder:: ~G4FTFBinaryPionBuilder()
{
  delete theCascade;
  delete theStringDecay;
  delete theStringModel;
  delete theModel;
  if ( theQuasiElastic ) delete theQuasiElastic;
}

void G4FTFBinaryPionBuilder::
Build(G4HadronElasticProcess * ) {}

void G4FTFBinaryPionBuilder::
Build(G4PionPlusInelasticProcess * aP)
{
  theModel->SetMinEnergy(theMin);
  aP->AddDataSet(thePiData);
  aP->RegisterMe(theModel);
}

void G4FTFBinaryPionBuilder::
Build(G4PionMinusInelasticProcess * aP)
{
  theModel->SetMinEnergy(theMin);
  aP->AddDataSet(thePiData);
  aP->RegisterMe(theModel);
}