G4HadronElasticPhysics.cc

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// $Id: G4HadronElasticPhysics.cc 106611 2017-10-16 14:51:20Z gcosmo $
//
//---------------------------------------------------------------------------
//
// ClassName:   G4HadronElasticPhysics 
//
// Author: 23 November 2006 V. Ivanchenko
//
// Modified:
// 21.03.2007 V.Ivanchenko Use G4BGGNucleonElasticXS and G4BGGPionElasticXS; 
//                         Reduce thresholds for HE and Q-models to zero
// 03.06.2010 V.Ivanchenko cleanup constructors and ConstructProcess method
// 29.07.2010 V.Ivanchenko rename this class from G4HadronHElasticPhysics to
//                         G4HadronElasticPhysics, old version of the class
//                         is renamed to G4HadronElasticPhysics93
//
//----------------------------------------------------------------------------
//
// CHIPS for sampling scattering for p and n
// Glauber model for samplimg of high energy pi+- (E > 1GeV)
// LHEP sampling model for the other particle
// BBG cross sections for p, n and pi+- 
// LHEP cross sections for other particles

#include "G4HadronElasticPhysics.hh"

#include "G4SystemOfUnits.hh"
#include "G4ParticleDefinition.hh"
#include "G4ProcessManager.hh"

#include "G4MesonConstructor.hh"
#include "G4BaryonConstructor.hh"
#include "G4IonConstructor.hh"

#include "G4HadronElasticProcess.hh"
#include "G4HadronElastic.hh"
#include "G4ChipsElasticModel.hh"
#include "G4ElasticHadrNucleusHE.hh"
#include "G4AntiNuclElastic.hh"

#include "G4ComponentGGHadronNucleusXsc.hh"
#include "G4ComponentGGNuclNuclXsc.hh"

#include "G4BGGNucleonElasticXS.hh"
#include "G4BGGPionElasticXS.hh"

#include "G4CrossSectionDataSetRegistry.hh"

#include "G4ChipsProtonElasticXS.hh"

#include "G4NeutronElasticXS.hh"

#include "G4CrossSectionElastic.hh"

// factory
#include "G4PhysicsConstructorFactory.hh"
//
G4_DECLARE_PHYSCONSTR_FACTORY(G4HadronElasticPhysics);
//
G4ThreadLocal G4bool G4HadronElasticPhysics::wasActivated = false;
G4ThreadLocal G4HadronElastic* G4HadronElasticPhysics::neutronModel = 0;
G4ThreadLocal G4HadronicProcess* G4HadronElasticPhysics::neutronProcess = 0;

G4HadronElasticPhysics::G4HadronElasticPhysics(G4int ver)
  : G4VPhysicsConstructor("hElasticWEL_CHIPS"), verbose(ver)
{
  if(verbose > 1) { 
    G4cout << "### G4HadronElasticPhysics: " << GetPhysicsName() 
       << G4endl; 
  }
}

G4HadronElasticPhysics::~G4HadronElasticPhysics()
{}

void G4HadronElasticPhysics::ConstructParticle()
{
  // G4cout << "G4HadronElasticPhysics::ConstructParticle" << G4endl;
  G4MesonConstructor pMesonConstructor;
  pMesonConstructor.ConstructParticle();

  G4BaryonConstructor pBaryonConstructor;
  pBaryonConstructor.ConstructParticle();

  G4IonConstructor pConstructor;
  pConstructor.ConstructParticle();  
}

void G4HadronElasticPhysics::ConstructProcess()
{
  if(wasActivated) { return; }
  wasActivated = true;

  const G4double elimitPi = 1.0*GeV;
  const G4double elimitAntiNuc = 100.*MeV;
  const G4double delta = 0.1*MeV;
  if(verbose > 1) {
    G4cout << "### HadronElasticPhysics::ConstructProcess: Elimit for pi " 
       << elimitPi/GeV << " GeV" << G4endl;
    G4cout << "                                         for anti-neuclei " 
       << elimitAntiNuc/GeV << " GeV"      << G4endl;
  }

  G4AntiNuclElastic* anuc = new G4AntiNuclElastic();
  anuc->SetMinEnergy(elimitAntiNuc);
  G4CrossSectionElastic* anucxs = 
    new G4CrossSectionElastic(anuc->GetComponentCrossSection());

  G4HadronElastic* lhep0 = new G4HadronElastic();
  G4HadronElastic* lhep1 = new G4HadronElastic();
  G4HadronElastic* lhep2 = new G4HadronElastic();
  lhep1->SetMaxEnergy(elimitPi+delta);
  lhep2->SetMaxEnergy(elimitAntiNuc+delta);

  G4ChipsElasticModel* chipsp = new G4ChipsElasticModel();
  neutronModel = new G4ChipsElasticModel();

  G4ElasticHadrNucleusHE* he = new G4ElasticHadrNucleusHE(); 
  he->SetMinEnergy(elimitPi);

  G4VCrossSectionDataSet* theComponentGGHadronNucleusData = 
    new G4CrossSectionElastic( new G4ComponentGGHadronNucleusXsc );

  auto myParticleIterator=GetParticleIterator();
  myParticleIterator->reset();
  while( (*myParticleIterator)() )
  {
    G4ParticleDefinition* particle = myParticleIterator->value();
    G4ProcessManager* pmanager = particle->GetProcessManager();
    G4String pname = particle->GetParticleName();
    if(pname == "anti_lambda"  ||
       pname == "anti_neutron" ||
       pname == "anti_omega-"  || 
       pname == "anti_sigma-"  || 
       pname == "anti_sigma+"  || 
       pname == "anti_xi-"  || 
       pname == "anti_xi0"  || 
       pname == "lambda"    || 
       pname == "omega-"    || 
       pname == "sigma-"    || 
       pname == "sigma+"    || 
       pname == "xi-"       || 
       pname == "alpha"     ||
       pname == "deuteron"  ||
       pname == "triton"   
       ) {
      
      G4HadronElasticProcess* hel = new G4HadronElasticProcess();
      hel->RegisterMe(lhep0);
      pmanager->AddDiscreteProcess(hel);
      if(verbose > 1) {
    G4cout << "### HadronElasticPhysics: " << hel->GetProcessName()
           << " added for " << particle->GetParticleName() << G4endl;
      }

    } else if(pname == "He3") {
      G4HadronElasticProcess* hel = new G4HadronElasticProcess();
      G4VCrossSectionDataSet* theComponentGGNuclNuclData = 
        new G4CrossSectionElastic(new G4ComponentGGNuclNuclXsc());
      hel->AddDataSet(theComponentGGNuclNuclData);
      hel->RegisterMe(lhep0);
      pmanager->AddDiscreteProcess(hel);
      if(verbose > 1) {
    G4cout << "### HadronElasticPhysics: " << hel->GetProcessName()
           << " added for " << particle->GetParticleName() << G4endl;
      }

    } else if(pname == "proton") {   

      G4HadronElasticProcess* hel = new G4HadronElasticProcess();
      //hel->AddDataSet(new G4BGGNucleonElasticXS(particle));

      //      hel->AddDataSet(new G4ChipsProtonElasticXS());
      hel->AddDataSet(G4CrossSectionDataSetRegistry::Instance()->GetCrossSectionDataSet(G4ChipsProtonElasticXS::Default_Name()));
     
      hel->RegisterMe(chipsp);
      pmanager->AddDiscreteProcess(hel);
      if(verbose > 1) {
    G4cout << "### HadronElasticPhysics: " << hel->GetProcessName()
           << " added for " << particle->GetParticleName() << G4endl;
      }

    } else if(pname == "neutron") {   

      neutronProcess = new G4HadronElasticProcess();
      neutronProcess->AddDataSet(G4CrossSectionDataSetRegistry::Instance()->GetCrossSectionDataSet(G4NeutronElasticXS::Default_Name()));
      neutronProcess->RegisterMe(neutronModel);
      pmanager->AddDiscreteProcess(neutronProcess);
      if(verbose > 1) {
    G4cout << "### HadronElasticPhysics: " 
           << neutronProcess->GetProcessName()
           << " added for " << particle->GetParticleName() << G4endl;
      }

    } else if (pname == "pi+" || pname == "pi-") { 

      G4HadronElasticProcess* hel = new G4HadronElasticProcess();
      hel->AddDataSet(new G4BGGPionElasticXS(particle));
      hel->RegisterMe(lhep1);
      hel->RegisterMe(he);
      pmanager->AddDiscreteProcess(hel);
      if(verbose > 1) {
    G4cout << "### HadronElasticPhysics: " << hel->GetProcessName()
           << " added for " << particle->GetParticleName() << G4endl;
      }

    } else if(pname == "kaon-"     || 
          pname == "kaon+"     || 
          pname == "kaon0S"    || 
          pname == "kaon0L" 
          ) {
      
      G4HadronElasticProcess* hel = new G4HadronElasticProcess();
      //AR-14Aug2017 : Replaced Gheisha elastic kaon cross sections with
      //               Grichine's Glauber-Gribov ones. In this way, the
      //               total (elastic + inelastic) kaon cross sections
      //               are consistent with the PDG ones.
      //               For the time being, kept Gheisha elastic as
      //               final-state model.
      hel->AddDataSet( theComponentGGHadronNucleusData );
      hel->RegisterMe(lhep0);
      pmanager->AddDiscreteProcess(hel);
      if(verbose > 1) {
    G4cout << "### HadronElasticPhysics: " << hel->GetProcessName()
           << " added for " << particle->GetParticleName() << G4endl;
      }

    } else if(
       pname == "anti_proton"    || 
       pname == "anti_alpha"     ||
       pname == "anti_deuteron"  ||
       pname == "anti_triton"    ||
       pname == "anti_He3"       ) {

      G4HadronElasticProcess* hel = new G4HadronElasticProcess();
      hel->AddDataSet(anucxs);
      hel->RegisterMe(lhep2);
      hel->RegisterMe(anuc);
      pmanager->AddDiscreteProcess(hel);
    }
  }
}


G4HadronElastic* G4HadronElasticPhysics::GetNeutronModel()
{
  return neutronModel;
}

G4HadronicProcess* G4HadronElasticPhysics::GetNeutronProcess()
{
  return neutronProcess;
}