G4QGSBinaryPionBuilder.cc

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// $Id$
//
//---------------------------------------------------------------------------
//
// Modified:
//
//----------------------------------------------------------------------------
//
#include "G4QGSBinaryPionBuilder.hh"
#include "G4SystemOfUnits.hh"
#include "G4ParticleDefinition.hh"
#include "G4ParticleTable.hh"
#include "G4ProcessManager.hh"
#include "G4PiNuclearCrossSection.hh"
#include "G4CrossSectionPairGG.hh"
#include "G4CrossSectionDataSetRegistry.hh"

G4QGSBinaryPionBuilder::
G4QGSBinaryPionBuilder(G4bool quasiElastic) 
{
  thePiData = new G4CrossSectionPairGG((G4PiNuclearCrossSection*)G4CrossSectionDataSetRegistry::Instance()->GetCrossSectionDataSet(G4PiNuclearCrossSection::Default_Name()), 91*GeV);

  theMin = 12*GeV;
  theModel = new G4TheoFSGenerator("QGSB");

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

  theCascade = new G4BinaryCascade;

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

G4QGSBinaryPionBuilder::
~G4QGSBinaryPionBuilder() 
{
  if ( theQuasiElastic ) delete theQuasiElastic;
  delete theStringDecay;
  delete theStringModel;
}

void G4QGSBinaryPionBuilder::
Build(G4HadronElasticProcess * ) {}

void G4QGSBinaryPionBuilder::
Build(G4PionPlusInelasticProcess * aP)
{
  theModel->SetMinEnergy(theMin);
  theModel->SetMaxEnergy(100*TeV);
  aP->AddDataSet(thePiData);
  aP->RegisterMe(theModel);
}

void G4QGSBinaryPionBuilder::
Build(G4PionMinusInelasticProcess * aP)
{
  theModel->SetMinEnergy(theMin);
  theModel->SetMaxEnergy(100*TeV);
  aP->AddDataSet(thePiData);
  aP->RegisterMe(theModel);
}