G4HadronElasticPhysics.cc

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//---------------------------------------------------------------------------
//
// 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
//
//----------------------------------------------------------------------------
//
#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 "G4BGGNucleonElasticXS.hh"
#include "G4BGGPionElasticXS.hh"
 
#include "G4ChipsProtonElasticXS.hh"
 
#include "G4NeutronElasticXS.hh"
 
#include "G4HadronicParameters.hh"
#include "G4HadronicBuilder.hh"
#include "G4HadParticles.hh"
#include "G4HadProcesses.hh"
#include "G4PhysListUtil.hh"
#include "G4BuilderType.hh"
 
// factory
#include "G4PhysicsConstructorFactory.hh"
//
G4_DECLARE_PHYSCONSTR_FACTORY(G4HadronElasticPhysics);
//
 
G4HadronElasticPhysics::G4HadronElasticPhysics(G4int ver, const G4String& nam)
  : G4VPhysicsConstructor(nam)
{
  G4HadronicParameters::Instance()->SetVerboseLevel(ver);
  if(ver > 1) { 
    G4cout << "### G4HadronElasticPhysics: " << GetPhysicsName() 
       << G4endl; 
  }
  SetPhysicsType(bHadronElastic);
}
 
void G4HadronElasticPhysics::ConstructParticle()
{
  G4MesonConstructor pMesonConstructor;
  pMesonConstructor.ConstructParticle();
 
  G4BaryonConstructor pBaryonConstructor;
  pBaryonConstructor.ConstructParticle();
 
  G4IonConstructor pConstructor;
  pConstructor.ConstructParticle();  
}
 
void G4HadronElasticPhysics::ConstructProcess()
{
  G4HadronicParameters* param = G4HadronicParameters::Instance();
  G4bool useFactorXS = param->ApplyFactorXS();
  G4ParticleTable* table = G4ParticleTable::GetParticleTable();
  G4PhysicsListHelper* ph = G4PhysicsListHelper::GetPhysicsListHelper();
 
  const G4double elimitAntiNuc = 100.*MeV;
  const G4double delta = 0.1*MeV;
  G4double emax = std::max(param->GetMaxEnergy(), elimitAntiNuc+delta);
  if ( param->GetVerboseLevel() > 1 ) {
    G4cout << "### HadronElasticPhysics::ConstructProcess: "
       << "Elimit for for anti-neuclei " << elimitAntiNuc/CLHEP::GeV << " GeV"
       << " for all hadrons Emax(GeV)= " << emax/CLHEP::GeV
           << G4endl;
  }
 
  G4HadronElastic* lhep0 = new G4HadronElastic();
  G4HadronElastic* lhep2 = new G4HadronElastic();
  lhep0->SetMaxEnergy(emax);
  lhep2->SetMaxEnergy(elimitAntiNuc+delta);
 
  G4ElasticHadrNucleusHE* he = new G4ElasticHadrNucleusHE(); 
  he->SetMaxEnergy(emax);
 
  G4AntiNuclElastic* anuc = new G4AntiNuclElastic();
  anuc->SetMinEnergy(elimitAntiNuc);
  anuc->SetMaxEnergy(emax);
 
  auto anucxs = G4HadProcesses::ElasticXS("AntiAGlauber");
  auto xsNN = G4HadProcesses::ElasticXS("Glauber-Gribov Nucl-nucl");
 
  // p
  G4ParticleDefinition* particle = G4Proton::Proton();
  G4HadronElasticProcess* hel = new G4HadronElasticProcess();
  hel->AddDataSet(new G4BGGNucleonElasticXS(particle));
  hel->RegisterMe(new G4ChipsElasticModel());
  if ( useFactorXS ) hel->MultiplyCrossSectionBy( param->XSFactorNucleonElastic() );
  ph->RegisterProcess(hel, particle);
 
  // n
  hel = new G4HadronElasticProcess();
  hel->RegisterMe(new G4ChipsElasticModel());
  G4HadProcesses::BuildNeutronElastic(hel);
 
  // pi+
  particle = G4PionPlus::PionPlus();
  hel = new G4HadronElasticProcess();
  hel->AddDataSet(new G4BGGPionElasticXS(particle));
  hel->RegisterMe(he);
  if ( useFactorXS ) hel->MultiplyCrossSectionBy( param->XSFactorPionElastic() );
  ph->RegisterProcess(hel, particle);
 
  // pi-
  particle = G4PionMinus::PionMinus();
  hel = new G4HadronElasticProcess();
  hel->AddDataSet(new G4BGGPionElasticXS(particle));
  hel->RegisterMe(he);
  if ( useFactorXS ) hel->MultiplyCrossSectionBy( param->XSFactorPionElastic() );
  ph->RegisterProcess(hel, particle);
 
  // kaons
  G4HadronicBuilder::BuildElastic( G4HadParticles::GetKaons() );
 
  // d, t, He3, alpha
  for ( auto & pdg : G4HadParticles::GetLightIons() ) {
    particle = table->FindParticle( pdg );
    if ( particle == nullptr ) { continue; }
 
    hel = new G4HadronElasticProcess();
    hel->AddDataSet(xsNN);
    hel->RegisterMe(lhep0);
    if( useFactorXS ) hel->MultiplyCrossSectionBy( param->XSFactorHadronElastic() );
    ph->RegisterProcess(hel, particle);
  }
 
  // high energy particles
  if( emax > param->EnergyThresholdForHeavyHadrons() ) {
 
    // pbar, nbar, anti light ions
    for( auto & pdg : G4HadParticles::GetLightAntiIons() ) {
      particle = table->FindParticle( pdg );
      if ( particle == nullptr ) { continue; }
 
      hel = new G4HadronElasticProcess();
      hel->RegisterMe(lhep2);
      hel->RegisterMe(anuc);
      hel->AddDataSet(anucxs);
      if( useFactorXS ) hel->MultiplyCrossSectionBy( param->XSFactorHadronElastic() );
      ph->RegisterProcess(hel, particle);
    }
 
    // hyperons
    G4HadronicBuilder::BuildElastic( G4HadParticles::GetHyperons() );
    G4HadronicBuilder::BuildElastic( G4HadParticles::GetAntiHyperons() );
 
    // b-, c- baryons and mesons
    if( G4HadronicParameters::Instance()->EnableBCParticles() ) {
      G4HadronicBuilder::BuildElastic( G4HadParticles::GetBCHadrons() );
    }
 
    // light hypernuclei and anti-hypernuclei
    if ( G4HadronicParameters::Instance()->EnableHyperNuclei() ) {
      // for light hypernuclei, we can use directly the following method:
      G4HadronicBuilder::BuildElastic( G4HadParticles::GetHyperNuclei() );
      // but not for light anti-hypernuclei, because they need a different cross section:
      for ( auto & pdg : G4HadParticles::GetHyperAntiNuclei() ) {
    particle = table->FindParticle( pdg );
    if ( particle == nullptr ) continue;
    hel = new G4HadronElasticProcess;
    hel->AddDataSet( anucxs );
    hel->RegisterMe( lhep0 );
    if ( useFactorXS ) hel->MultiplyCrossSectionBy( param->XSFactorHadronElastic() );
    ph->RegisterProcess( hel, particle );
      }
    }
  }
}
 
G4HadronicProcess* 
G4HadronElasticPhysics::GetElasticProcess(const G4ParticleDefinition* part) const
{
  return G4PhysListUtil::FindElasticProcess(part);
}
 
G4HadronElastic* 
G4HadronElasticPhysics::GetElasticModel(const G4ParticleDefinition* part) const
{
  G4HadronElastic* mod = nullptr;
  G4HadronicProcess* hel = GetElasticProcess(part);
  if ( nullptr != hel ) {
    const std::vector<G4HadronicInteraction*>& hi = hel->GetHadronicInteractionList();
    if ( !hi.empty() ) {
      for (auto const & p : hi) {
        auto ptr = dynamic_cast<G4HadronElastic*>(p);
        if ( nullptr != ptr ) {
      mod = ptr;
      break;
    }
      }
    }
  }
  return mod;
}
 
G4HadronicProcess* G4HadronElasticPhysics::GetNeutronProcess() const
{
  return GetElasticProcess(G4Neutron::Neutron());
}
 
G4HadronElastic* G4HadronElasticPhysics::GetNeutronModel() const
{
  return GetElasticModel(G4Neutron::Neutron());
}
 
void G4HadronElasticPhysics::AddXSection(const G4ParticleDefinition* part,
                     G4VCrossSectionDataSet* cross) const
{
  G4HadronicProcess* hel = GetElasticProcess(part);
  if ( nullptr != hel ) { hel->AddDataSet(cross); }
}