G4QGSPPiKBuilder.cc

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//
//---------------------------------------------------------------------------
//
// ClassName:   G4QGSPPiKBuilder
//
// 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 "G4QGSPPiKBuilder.hh"
#include "G4SystemOfUnits.hh"
#include "G4ParticleDefinition.hh"
#include "G4ParticleTable.hh"
#include "G4ProcessManager.hh"
#include "G4BGGPionInelasticXS.hh"
#include "G4HadronicParameters.hh"
 
 
G4QGSPPiKBuilder::
G4QGSPPiKBuilder(G4bool quasiElastic) 
{    
  theMin = G4HadronicParameters::Instance()->GetMinEnergyTransitionQGS_FTF();
  theModel = new G4TheoFSGenerator("QGSP");
 
  G4QGSModel< G4QGSParticipants >* theStringModel = 
    new G4QGSModel< G4QGSParticipants >;
  G4ExcitedStringDecay* theStringDecay = 
    new G4ExcitedStringDecay(new G4QGSMFragmentation);
  theStringModel->SetFragmentationModel(theStringDecay);
 
  G4GeneratorPrecompoundInterface* theCascade = 
    new G4GeneratorPrecompoundInterface();
 
  theModel->SetTransport(theCascade);
  theModel->SetHighEnergyGenerator(theStringModel);
  if (quasiElastic)
    {
      theModel->SetQuasiElasticChannel(new G4QuasiElasticChannel());
    } 
}
 
G4QGSPPiKBuilder::
~G4QGSPPiKBuilder() 
{
}
 
void G4QGSPPiKBuilder::
Build(G4HadronInelasticProcess * aP)
{
  theModel->SetMinEnergy(theMin);
  theModel->SetMaxEnergy( G4HadronicParameters::Instance()->GetMaxEnergy() );
  if ( aP->GetParticleDefinition() == G4PionPlus::Definition() ) { 
    aP->AddDataSet( new G4BGGPionInelasticXS( G4PionPlus::Definition() ) );
  } else if ( aP->GetParticleDefinition() == G4PionMinus::Definition() ) { 
    aP->AddDataSet( new G4BGGPionInelasticXS( G4PionMinus::Definition() ) );
  }
  aP->RegisterMe(theModel);
}