#include <G4BGGPionInelasticXS.hh>

Inheritance diagram for G4BGGPionInelasticXS:

Public Member Functions
	G4BGGPionInelasticXS (const G4ParticleDefinition *)

virtual	~G4BGGPionInelasticXS ()

virtual G4bool	IsElementApplicable (const G4DynamicParticle , G4int Z, const G4Material mat=0)

virtual G4bool	IsIsoApplicable (const G4DynamicParticle , G4int Z, G4int A, const G4Element elm=0, const G4Material *mat=0)

virtual G4double	GetElementCrossSection (const G4DynamicParticle , G4int Z, const G4Material mat=0)

virtual G4double	GetIsoCrossSection (const G4DynamicParticle , G4int Z, G4int A, const G4Isotope iso=0, const G4Element elm=0, const G4Material mat=0)

virtual void	BuildPhysicsTable (const G4ParticleDefinition &)

virtual void	CrossSectionDescription (std::ostream &) const

Public Member Functions inherited from G4VCrossSectionDataSet
	G4VCrossSectionDataSet (const G4String &nam="")

virtual	~G4VCrossSectionDataSet ()

G4double	GetCrossSection (const G4DynamicParticle , const G4Element , const G4Material *mat=0)

G4double	ComputeCrossSection (const G4DynamicParticle , const G4Element , const G4Material *mat=0)

virtual G4Isotope *	SelectIsotope (const G4Element *, G4double kinEnergy)

virtual void	DumpPhysicsTable (const G4ParticleDefinition &)

virtual G4int	GetVerboseLevel () const

virtual void	SetVerboseLevel (G4int value)

G4double	GetMinKinEnergy () const

void	SetMinKinEnergy (G4double value)

G4double	GetMaxKinEnergy () const

void	SetMaxKinEnergy (G4double value)

const G4String &	GetName () const

Additional Inherited Members
Protected Member Functions inherited from G4VCrossSectionDataSet
void	SetName (const G4String &)

Protected Attributes inherited from G4VCrossSectionDataSet
G4int	verboseLevel

Detailed Description

Definition at line 68 of file G4BGGPionInelasticXS.hh.

Constructor & Destructor Documentation

G4BGGPionInelasticXS::G4BGGPionInelasticXS ( const G4ParticleDefinition * p )

Definition at line 56 of file G4BGGPionInelasticXS.cc.

References G4Pow::GetInstance(), python.hepunit::GeV, python.hepunit::MeV, G4Proton::Proton(), G4VCrossSectionDataSet::SetMaxKinEnergy(), G4VCrossSectionDataSet::SetMinKinEnergy(), python.hepunit::TeV, and G4VCrossSectionDataSet::verboseLevel.

  : G4VCrossSectionDataSet("Barashenkov-Glauber-Gribov")
 {
   verboseLevel = 0;
   fGlauberEnergy = 91.*GeV;
   fLowEnergy = 20.*MeV;
   fSAIDHighEnergyLimit = 2.6*GeV;
   SetMinKinEnergy(0.0);
   SetMaxKinEnergy(100*TeV);
 
   for (G4int i = 0; i < 93; i++) {
     theGlauberFac[i] = 0.0;
     theCoulombFac[i] = 0.0;
     theA[i] = 1;
   }
   fPion = 0;
   fGlauber = 0;
   fHadron  = 0;
   fSAID    = 0;
 
   fG4pow   = G4Pow::GetInstance();
 
   particle = p;
   theProton= G4Proton::Proton();
   isPiplus = false;
   isInitialized = false;
 }

G4BGGPionInelasticXS::~G4BGGPionInelasticXS ( )

virtual

Definition at line 85 of file G4BGGPionInelasticXS.cc.

 {
   delete fGlauber;
   delete fPion;
   delete fHadron;
   delete fSAID;
 }

Member Function Documentation

void G4BGGPionInelasticXS::BuildPhysicsTable ( const G4ParticleDefinition & p )

virtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 184 of file G4BGGPionInelasticXS.cc.

References G4UPiNuclearCrossSection::BuildPhysicsTable(), G4VCrossSectionDataSet::BuildPhysicsTable(), G4cout, G4endl, G4lrint(), G4NistManager::GetAtomicMassAmu(), G4HadronNucleonXsc::GetHadronNucleonXscPDG(), G4UPiNuclearCrossSection::GetInelasticCrossSection(), G4GlauberGribovCrossSection::GetInelasticGlauberGribov(), G4HadronNucleonXsc::GetInelasticHadronNucleonXsc(), G4ComponentSAIDTotalXS::GetInelasticIsotopeCrossSection(), G4ParticleDefinition::GetParticleName(), G4NistManager::Instance(), iz, python.hepunit::MeV, G4PionMinus::PionMinus(), G4PionPlus::PionPlus(), G4DynamicParticle::SetKineticEnergy(), and G4VCrossSectionDataSet::verboseLevel.

 {
   if(&p == G4PionPlus::PionPlus() || &p == G4PionMinus::PionMinus()) {
     particle = &p;
   } else {
     G4cout << "### G4BGGPionInelasticXS WARNING: is not applicable to " 
        << p.GetParticleName()
        << G4endl;
     throw G4HadronicException(__FILE__, __LINE__,
       "G4BGGPionInelasticXS::BuildPhysicsTable is used for wrong particle");
     return;
   }
 
   if(isInitialized) { return; }
   isInitialized = true;
 
   fPion    = new G4UPiNuclearCrossSection();
   fGlauber = new G4GlauberGribovCrossSection();
   fHadron  = new G4HadronNucleonXsc();
   fSAID    = new G4ComponentSAIDTotalXS();
 
   fPion->BuildPhysicsTable(*particle);
   fGlauber->BuildPhysicsTable(*particle);
   if(particle == G4PionPlus::PionPlus()) { isPiplus = true; }
 
   G4ParticleDefinition* part = const_cast<G4ParticleDefinition*>(particle);
   G4ThreeVector mom(0.0,0.0,1.0);
   G4DynamicParticle dp(part, mom, fGlauberEnergy);
 
   G4NistManager* nist = G4NistManager::Instance();
 
   G4double csup, csdn;
   G4int A;
 
   if(verboseLevel > 0) {
     G4cout << "### G4BGGPionInelasticXS::Initialise for "
        << particle->GetParticleName()
        << " isPiplus: " << isPiplus
        << G4endl;
   }
 
   for(G4int iz=2; iz<93; iz++) {
 
     A = G4lrint(nist->GetAtomicMassAmu(iz));
     theA[iz] = A;
 
     csup = fGlauber->GetInelasticGlauberGribov(&dp, iz, A);
     csdn = fPion->GetInelasticCrossSection(&dp, iz, theA[iz]);
 
     theGlauberFac[iz] = csdn/csup;
     if(verboseLevel > 0) {
       G4cout << "Z= " << iz <<  "  A= " << A 
          << " factor= " << theGlauberFac[iz] << G4endl; 
     }
   }
   dp.SetKineticEnergy(fSAIDHighEnergyLimit);
   fHadron->GetHadronNucleonXscPDG(&dp, theProton);
   theCoulombFac[1] = fSAIDHighEnergyLimit*
     (fSAID->GetInelasticIsotopeCrossSection(particle,fSAIDHighEnergyLimit,1,1)
      /fHadron->GetInelasticHadronNucleonXsc() - 1);
 
   if(isPiplus) { 
     dp.SetKineticEnergy(2*MeV);
     for(G4int iz=2; iz<93; iz++) {
       theCoulombFac[iz] = fPion->GetInelasticCrossSection(&dp, iz, theA[iz])
     /CoulombFactor(2*MeV,iz); 
     }
 
   } else {
     dp.SetKineticEnergy(fLowEnergy);
     //fHadron->GetHadronNucleonXscNS(&dp, theProton);
     //theCoulombFac[1] = theGlauberFac[1]*fHadron->GetInelasticHadronNucleonXsc();
     for(G4int iz=2; iz<93; iz++) {
       theCoulombFac[iz] = fPion->GetInelasticCrossSection(&dp, iz, theA[iz]);
     }
   }
 }

void G4BGGPionInelasticXS::CrossSectionDescription ( std::ostream & outFile ) const

virtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 289 of file G4BGGPionInelasticXS.cc.

 {
   outFile << "The Barashenkov-Glauber-Gribov cross section handles inelastic\n"
           << "pion scattering from nuclei at all energies.  The Barashenkov\n"
           << "parameterization is used below 91 GeV and the Glauber-Gribov\n"
           << "parameterization is used above 91 GeV.\n";
 }

G4double G4BGGPionInelasticXS::GetElementCrossSection	(	const G4DynamicParticle *	dp,
		G4int	Z,
		const G4Material *	mat = `0`
	)

virtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 115 of file G4BGGPionInelasticXS.cc.

References python.hepunit::barn, G4cout, G4endl, G4DynamicParticle::GetDefinition(), G4UPiNuclearCrossSection::GetInelasticCrossSection(), G4GlauberGribovCrossSection::GetInelasticGlauberGribov(), GetIsoCrossSection(), G4DynamicParticle::GetKineticEnergy(), G4ParticleDefinition::GetParticleName(), python.hepunit::MeV, and G4VCrossSectionDataSet::verboseLevel.

 {
   // this method should be called only for Z > 1
 
   G4double cross = 0.0;
   G4double ekin = dp->GetKineticEnergy();
   G4int Z = ZZ;
   if(1 == Z) {
     cross = 1.0115*GetIsoCrossSection(dp,1,1);
   } else {
     if(Z > 92) { Z = 92; }
 
     if(ekin <= fLowEnergy && !isPiplus) {
       cross = theCoulombFac[Z];
     } else if(ekin <= 2*MeV && isPiplus) {
       cross = theCoulombFac[Z]*CoulombFactor(ekin, Z);  
     } else if(ekin > fGlauberEnergy) {
       cross = theGlauberFac[Z]*fGlauber->GetInelasticGlauberGribov(dp, Z, theA[Z]);
     } else {
       cross = fPion->GetInelasticCrossSection(dp, Z, theA[Z]);
     }
   }
   if(verboseLevel > 1) {
     G4cout << "G4BGGPionInelasticXS::GetCrossSection  for "
        << dp->GetDefinition()->GetParticleName()
        << "  Ekin(GeV)= " << dp->GetKineticEnergy()
        << " in nucleus Z= " << Z << "  A= " << theA[Z]
        << " XS(b)= " << cross/barn 
        << G4endl;
   }
   return cross;
 }

G4double G4BGGPionInelasticXS::GetIsoCrossSection	(	const G4DynamicParticle *	dp,
		G4int	Z,
		G4int	A,
		const G4Isotope *	iso = `0`,
		const G4Element *	elm = `0`,
		const G4Material *	mat = `0`
	)

virtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 152 of file G4BGGPionInelasticXS.cc.

References python.hepunit::barn, G4cout, G4endl, G4DynamicParticle::GetDefinition(), G4HadronNucleonXsc::GetHadronNucleonXscPDG(), G4HadronNucleonXsc::GetInelasticHadronNucleonXsc(), G4ComponentSAIDTotalXS::GetInelasticIsotopeCrossSection(), G4DynamicParticle::GetKineticEnergy(), G4ParticleDefinition::GetParticleName(), and G4VCrossSectionDataSet::verboseLevel.

Referenced by GetElementCrossSection().

 {
   // this method should be called only for Z = 1
 
   G4double cross = 0.0;
   G4double ekin = dp->GetKineticEnergy();
 
   if(ekin <= fSAIDHighEnergyLimit) {
     cross = fSAID->GetInelasticIsotopeCrossSection(particle, ekin, 1, 1);
   } else {
     fHadron->GetHadronNucleonXscPDG(dp, theProton);
     cross = (theCoulombFac[1]/ekin + 1)*fHadron->GetInelasticHadronNucleonXsc();
   } 
   cross *= A;
 
   if(verboseLevel > 1) {
     G4cout << "G4BGGPionInelasticXS::GetCrossSection  for "
        << dp->GetDefinition()->GetParticleName()
        << "  Ekin(GeV)= " << dp->GetKineticEnergy()
        << " in nucleus Z= " << Z << "  A= " << A
        << " XS(b)= " << cross/barn 
        << G4endl;
   }
   return cross;
 }

G4bool G4BGGPionInelasticXS::IsElementApplicable	(	const G4DynamicParticle *	,
		G4int	Z,
		const G4Material *	mat = `0`
	)

virtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 96 of file G4BGGPionInelasticXS.cc.

 {
   return true;
 }

G4bool G4BGGPionInelasticXS::IsIsoApplicable	(	const G4DynamicParticle *	,
		G4int	Z,
		G4int	A,
		const G4Element *	elm = `0`,
		const G4Material *	mat = `0`
	)

virtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 104 of file G4BGGPionInelasticXS.cc.

 {
   return (1 == Z && 2 >= A);
 }

The documentation for this class was generated from the following files:

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation