HyperonPhysics.cc

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// $Id: $
//                                                                            //
//  File:        HyperonPhysics.cc                                            //
//  Description: Hyperon hadronic physics constructor for EICPhysicsList      //
//                                                                            //
//  Author:      Dennis H. Wright (SLAC)                                      //  
//  Date:        5 July 2018                                                  //
//                                                                            //


#include "HyperonPhysics.hh"

#include <Geant4/G4ProcessManager.hh>
#include <Geant4/G4LambdaInelasticProcess.hh>
#include <Geant4/G4SigmaPlusInelasticProcess.hh>
#include <Geant4/G4SigmaMinusInelasticProcess.hh>
#include <Geant4/G4XiZeroInelasticProcess.hh>
#include <Geant4/G4XiMinusInelasticProcess.hh>
#include <Geant4/G4OmegaMinusInelasticProcess.hh>

#include <Geant4/G4HadronElasticProcess.hh>
#include <Geant4/G4HadronicAbsorptionBertini.hh>

#include <Geant4/G4CascadeInterface.hh>
#include <Geant4/G4TheoFSGenerator.hh>
#include <Geant4/G4FTFModel.hh>
#include <Geant4/G4ExcitedStringDecay.hh>
#include <Geant4/G4LundStringFragmentation.hh>
#include <Geant4/G4GeneratorPrecompoundInterface.hh>
#include <Geant4/G4HadronElastic.hh>

#include <Geant4/G4ChipsHyperonInelasticXS.hh>
#include <Geant4/G4SystemOfUnits.hh>


HyperonPhysics::HyperonPhysics():
  ftfp(nullptr),
  stringModel(nullptr),
  stringDecay(nullptr),
  fragModel(nullptr),
  preCompoundModel(nullptr)
{}


HyperonPhysics::~HyperonPhysics()
{
  delete stringDecay;
  delete stringModel;
  delete fragModel;
  delete preCompoundModel;
}


void HyperonPhysics::ConstructParticle()
{}


void HyperonPhysics::ConstructProcess()
{
  G4ProcessManager* procMan = 0;

  // One elastic model for all hyperon energies
  G4HadronElastic* elModel = new G4HadronElastic();

  // Use Bertini cascade for low energies
  G4CascadeInterface* loInelModel = new G4CascadeInterface;
  loInelModel->SetMinEnergy(0.0);
  loInelModel->SetMaxEnergy(6.0*GeV);

  // Use FTFP for high energies   ==>>   eventually replace this with new class FTFPInterface
  ftfp = new G4TheoFSGenerator("FTFP");
  stringModel = new G4FTFModel;
  stringDecay =
    new G4ExcitedStringDecay(fragModel = new G4LundStringFragmentation);
  stringModel->SetFragmentationModel(stringDecay);
  preCompoundModel = new G4GeneratorPrecompoundInterface();

  ftfp->SetHighEnergyGenerator(stringModel);
  ftfp->SetTransport(preCompoundModel); 
  ftfp->SetMinEnergy(4*GeV);
  ftfp->SetMaxEnergy(100*TeV);

  // Inelastic cross section set
  G4ChipsHyperonInelasticXS* chipsInelastic = new G4ChipsHyperonInelasticXS;

  //   Lambda                                                                 // 

  procMan = G4Lambda::Lambda()->GetProcessManager();

  // elastic
  G4HadronElasticProcess* lamProcEl = new G4HadronElasticProcess;
  lamProcEl->RegisterMe(elModel);
  procMan->AddDiscreteProcess(lamProcEl);

  // inelastic 
  G4LambdaInelasticProcess* lamProcInel = new G4LambdaInelasticProcess;
  lamProcInel->RegisterMe(loInelModel);
  lamProcInel->RegisterMe(ftfp);
  lamProcInel->AddDataSet(chipsInelastic);
  procMan->AddDiscreteProcess(lamProcInel);

  //   Sigma+                                                                 // 

  procMan = G4SigmaPlus::SigmaPlus()->GetProcessManager();

  // elastic
  G4HadronElasticProcess* spProcEl = new G4HadronElasticProcess;
  spProcEl->RegisterMe(elModel);
  procMan->AddDiscreteProcess(spProcEl);

  // inelastic
  G4SigmaPlusInelasticProcess* spProcInel = new G4SigmaPlusInelasticProcess;
  spProcInel->RegisterMe(loInelModel);
  spProcInel->RegisterMe(ftfp);
  spProcInel->AddDataSet(chipsInelastic);
  procMan->AddDiscreteProcess(spProcInel);

  //   Sigma-                                                                 // 

  procMan = G4SigmaMinus::SigmaMinus()->GetProcessManager();

  // elastic
  G4HadronElasticProcess* smProcEl = new G4HadronElasticProcess;
  smProcEl->RegisterMe(elModel);
  procMan->AddDiscreteProcess(smProcEl);

  // inelastic
  G4SigmaMinusInelasticProcess* smProcInel = new G4SigmaMinusInelasticProcess;
  smProcInel->RegisterMe(loInelModel);
  smProcInel->RegisterMe(ftfp);
  smProcInel->AddDataSet(chipsInelastic);
  procMan->AddDiscreteProcess(smProcInel);

  // stopping
  G4HadronicAbsorptionBertini* smAbsorb = new G4HadronicAbsorptionBertini;
  procMan->AddRestProcess(smAbsorb);

  //   Xi0                                                                    // 

  procMan = G4XiZero::XiZero()->GetProcessManager();

  // elastic
  G4HadronElasticProcess* xzProcEl = new G4HadronElasticProcess;
  xzProcEl->RegisterMe(elModel);
  procMan->AddDiscreteProcess(xzProcEl);

  // inelastic
  G4XiZeroInelasticProcess* xzProcInel = new G4XiZeroInelasticProcess;
  xzProcInel->RegisterMe(loInelModel);
  xzProcInel->RegisterMe(ftfp);
  xzProcInel->AddDataSet(chipsInelastic);
  procMan->AddDiscreteProcess(xzProcInel);

  //   Xi-                                                                    // 

  procMan = G4XiMinus::XiMinus()->GetProcessManager();

  // elastic
  G4HadronElasticProcess* xmProcEl = new G4HadronElasticProcess;
  xmProcEl->RegisterMe(elModel);
  procMan->AddDiscreteProcess(xmProcEl);

  // inelastic
  G4XiMinusInelasticProcess* xmProcInel = new G4XiMinusInelasticProcess;
  xmProcInel->RegisterMe(loInelModel);
  xmProcInel->RegisterMe(ftfp);
  xmProcInel->AddDataSet(chipsInelastic);
  procMan->AddDiscreteProcess(xmProcInel);

  // stopping
  G4HadronicAbsorptionBertini* xmAbsorb = new G4HadronicAbsorptionBertini;
  procMan->AddRestProcess(xmAbsorb);

  //   Omega-                                                                 // 

  procMan = G4OmegaMinus::OmegaMinus()->GetProcessManager();

  // elastic
  G4HadronElasticProcess* omProcEl = new G4HadronElasticProcess;
  omProcEl->RegisterMe(elModel);
  procMan->AddDiscreteProcess(omProcEl);

  // inelastic
  G4OmegaMinusInelasticProcess* omProcInel = new G4OmegaMinusInelasticProcess;
  omProcInel->RegisterMe(loInelModel);
  omProcInel->RegisterMe(ftfp);
  omProcInel->AddDataSet(chipsInelastic);
  procMan->AddDiscreteProcess(omProcInel);

  // stopping
  G4HadronicAbsorptionBertini* omAbsorb = new G4HadronicAbsorptionBertini;
  procMan->AddRestProcess(omAbsorb);
}