G4BertiniElectroNuclearBuilder.cc

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//
//---------------------------------------------------------------------------
//
// ClassName:   G4BertiniElectroNuclearBuilder
//
// Author: 2002 H.P. Wellisch
//
// Modified: 
// 25.04.2006 V.Ivanchenko fix destructor 
//
//----------------------------------------------------------------------------
//
 
#include "G4BertiniElectroNuclearBuilder.hh"
 
#include "globals.hh"
#include "G4ios.hh"
#include "G4SystemOfUnits.hh"
 
#include "G4ParticleDefinition.hh"
#include "G4ParticleTable.hh"
#include "G4Gamma.hh"
#include "G4Electron.hh"
#include "G4Positron.hh"
#include "G4ProcessManager.hh"
#include "G4GammaGeneralProcess.hh"
#include "G4LossTableManager.hh"
 
#include "G4ElectroVDNuclearModel.hh"
#include "G4ElectronNuclearProcess.hh"
#include "G4PositronNuclearProcess.hh"
#include "G4PhotoNuclearCrossSection.hh"
 
#include "G4ios.hh"
 
#include "G4TheoFSGenerator.hh"
#include "G4GeneratorPrecompoundInterface.hh"
#include "G4QGSModel.hh"
#include "G4GammaParticipants.hh"
#include "G4QGSMFragmentation.hh"
#include "G4ExcitedStringDecay.hh"
 
 
#include "G4HadronicParameters.hh"
 
G4BertiniElectroNuclearBuilder::G4BertiniElectroNuclearBuilder(G4bool eNucl)
  : eActivated(eNucl)
{}
 
void G4BertiniElectroNuclearBuilder::Build()
{
  // gamma
  thePhotoNuclearProcess = new G4HadronInelasticProcess( "photonNuclear", G4Gamma::Definition() );
  thePhotoNuclearProcess->AddDataSet( new G4PhotoNuclearCrossSection() );
  theGammaReaction = new G4CascadeInterface();
 
  auto theModel = new G4TheoFSGenerator;
 
  auto theStringModel = new G4QGSModel< G4GammaParticipants >;
  auto theStringDecay = new G4ExcitedStringDecay( new G4QGSMFragmentation() );
  theStringModel->SetFragmentationModel(theStringDecay);
 
  auto theCascade = new G4GeneratorPrecompoundInterface();
 
  theModel->SetTransport(theCascade);
  theModel->SetHighEnergyGenerator(theStringModel);
 
  G4ProcessManager* aProcMan = nullptr;
 
  theGammaReaction->SetMaxEnergy(3.5*GeV);
  thePhotoNuclearProcess->RegisterMe(theGammaReaction);
  theModel->SetMinEnergy(3.*GeV);
  theModel->SetMaxEnergy( G4HadronicParameters::Instance()->GetMaxEnergy() );
  thePhotoNuclearProcess->RegisterMe(theModel);
  
  G4GammaGeneralProcess* sp = 
    dynamic_cast<G4GammaGeneralProcess*>(G4LossTableManager::Instance()->GetGammaGeneralProcess());
  if ( nullptr != sp ) {
    sp->AddHadProcess(thePhotoNuclearProcess);
  } else {
    aProcMan = G4Gamma::Gamma()->GetProcessManager();
    aProcMan->AddDiscreteProcess(thePhotoNuclearProcess);
  }
 
  // e+, e-
  if (eActivated) {  
 
    auto theElectronNuclearProcess = new G4ElectronNuclearProcess();
    auto thePositronNuclearProcess = new G4PositronNuclearProcess();
    auto theElectroReaction = new G4ElectroVDNuclearModel();
 
    aProcMan = G4Electron::Electron()->GetProcessManager();
    theElectronNuclearProcess->RegisterMe(theElectroReaction);
    aProcMan->AddDiscreteProcess(theElectronNuclearProcess);
  
    aProcMan = G4Positron::Positron()->GetProcessManager();
    thePositronNuclearProcess->RegisterMe(theElectroReaction);
    aProcMan->AddDiscreteProcess(thePositronNuclearProcess);
  }
}