G4QGSPPionBuilder.cc

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//
//---------------------------------------------------------------------------
//
// ClassName:   G4QGSPPionBuilder
//
// Author: 2010 G.Folger
//  devired from G4QGSPPiKBuilder
//
// 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
// 12.04.2017 A.Dotti move to new design with base class
//
//----------------------------------------------------------------------------
//
#include "G4QGSPPionBuilder.hh"
#include "G4SystemOfUnits.hh"
#include "G4ParticleDefinition.hh"
#include "G4ParticleTable.hh"
#include "G4ProcessManager.hh"
#include "G4BGGPionInelasticXS.hh"
#include "G4HadronicParameters.hh"
 
 
G4QGSPPionBuilder::
G4QGSPPionBuilder(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());
   } 
}
 
G4QGSPPionBuilder::
~G4QGSPPionBuilder() 
{
}
 
void G4QGSPPionBuilder::
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);
}