G4CrossSectionPairGG Class Reference

#include <G4CrossSectionPairGG.hh>

Inheritance diagram for G4CrossSectionPairGG:

Public Member Functions
	G4CrossSectionPairGG (G4VCrossSectionDataSet *low, G4double Etransit)
virtual	~G4CrossSectionPairGG ()
virtual void	CrossSectionDescription (std::ostream &) const
virtual G4bool	IsElementApplicable (const G4DynamicParticle *, G4int Z, const G4Material *mat=0)
virtual G4double	GetElementCrossSection (const G4DynamicParticle *, G4int Z, const G4Material *mat=0)
virtual void	BuildPhysicsTable (const G4ParticleDefinition &)
virtual void	DumpPhysicsTable (const G4ParticleDefinition &)
Public Member Functions inherited from G4VCrossSectionDataSet
	G4VCrossSectionDataSet (const G4String &nam="")
virtual	~G4VCrossSectionDataSet ()
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)
G4double	GetCrossSection (const G4DynamicParticle *, const G4Element *, const G4Material *mat=0)
G4double	ComputeCrossSection (const G4DynamicParticle *, const G4Element *, 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 G4Isotope *	SelectIsotope (const G4Element *, G4double kinEnergy)
virtual void	BuildPhysicsTable (const G4ParticleDefinition &)
virtual void	DumpPhysicsTable (const G4ParticleDefinition &)
virtual void	CrossSectionDescription (std::ostream &) const
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 51 of file G4CrossSectionPairGG.hh.

Constructor & Destructor Documentation

G4CrossSectionPairGG()

G4CrossSectionPairGG::G4CrossSectionPairGG	(	G4VCrossSectionDataSet *	low,
		G4double	Etransit
	)

Definition at line 48 of file G4CrossSectionPairGG.cc.

                         :
      G4VCrossSectionDataSet("G4CrossSectionPairGG"), theLowX(low), ETransition(
            Etransit) {
   NistMan = G4NistManager::Instance();
   theHighX = new G4GlauberGribovCrossSection();
   verboseLevel = 0;
}

~G4CrossSectionPairGG()

G4CrossSectionPairGG::~G4CrossSectionPairGG ( )

virtual

Definition at line 57 of file G4CrossSectionPairGG.cc.

                                            {
   //   The cross section registry wil delete these
   //    delete theLowX;
   //    delete theHighX;
}

Member Function Documentation

BuildPhysicsTable()

void G4CrossSectionPairGG::BuildPhysicsTable ( const G4ParticleDefinition &  pDef )

virtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 127 of file G4CrossSectionPairGG.cc.

                                                                             {
   theLowX->BuildPhysicsTable(pDef);
   theHighX->BuildPhysicsTable(pDef);
 
   if (verboseLevel > 0) {
      G4cout << "G4CrossSectionPairGG::BuildPhysicsTable "
            << theLowX->GetName() << "  " << theHighX->GetName() << G4endl;
   }
 
   G4ParticleDefinition * myDef = const_cast<G4ParticleDefinition*>(&pDef);
   std::vector<ParticleXScale>::iterator iter;
   iter = scale_factors.begin();
   while (iter != scale_factors.end() && (*iter).first != myDef) {
      ++iter;
   }
 
   //  new particle, initialise
 
   G4Material* mat = 0;
 
   if (iter == scale_factors.end()) {
      XS_factors factors(93);
      G4ThreeVector mom(0.0, 0.0, 1.0);
      G4DynamicParticle DynPart(myDef, mom, ETransition); // last is kinetic Energy
 
      if (verboseLevel > 0) {
         G4cout << "G4CrossSectionPairGG::BuildPhysicsTable for particle "
               << pDef.GetParticleName() << G4endl;
      }
      for (G4int aZ = 1; aZ < 93; ++aZ) {
         factors[aZ] = 1.; // default, to give reasonable value if only high is applicable
         G4int AA = G4lrint(NistMan->GetAtomicMassAmu(aZ));
         G4bool isApplicable = theLowX->IsElementApplicable(&DynPart, aZ,
               mat) && (aZ > 1);
 
         if (isApplicable) {
            factors[aZ] = theLowX->GetElementCrossSection(&DynPart, aZ, mat)
                              / theHighX->GetInelasticGlauberGribov(&DynPart, aZ, AA);
 
         }
         if (verboseLevel > 0) {
            G4cout << "Z=" << aZ << ",  A=" << AA << ", scale="
                  << factors[aZ];
            if (verboseLevel == 1) {
               G4cout << G4endl;
            } else {
               if (isApplicable) {
                  G4cout << ",  low / high "
                        << theLowX->GetElementCrossSection(&DynPart, aZ,
                              mat) << "  "
                              << theHighX->GetInelasticGlauberGribov(&DynPart,
                                    aZ, AA) << G4endl;
               } else {
                  G4cout << ",   N/A" << G4endl;
               }
            }
         }
      }
      ParticleXScale forPart(myDef, factors);
      scale_factors.push_back(forPart);
   }
}

Referenced by GetElementCrossSection().

CrossSectionDescription()

void G4CrossSectionPairGG::CrossSectionDescription ( std::ostream &  outFile ) const

virtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 63 of file G4CrossSectionPairGG.cc.

                                 {
   outFile << "G4CrossSectionPairGG is used to add the relativistic rise to\n"
         << "hadronic cross section data sets above a given energy.  In this\n"
         << "case, the Glauber-Gribov cross section is used above 91 GeV.\n"
         << "At this energy the low energy cross section is smoothly joined\n"
         << "to the high energy cross section.  Below 91 GeV the Barashenkov\n"
         << "cross section is used for pions (G4PiNuclearCrossSection), the\n"
         << "Axen-Wellisch cross section is used for protons\n"
         << "(G4ProtonInelasticCrossSection), and the Wellisch-Laidlaw cross\n"
         << "section is used for neutrons (G4NeutronInelasticCrossSection).\n";
}

DumpPhysicsTable()

void G4CrossSectionPairGG::DumpPhysicsTable ( const G4ParticleDefinition &  )

virtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 200 of file G4CrossSectionPairGG.cc.

                                                                       {
   G4cout << std::setw(24) << " " << " G4CrossSectionPairGG: "
         << theLowX->GetName() << " cross sections " << G4endl;
   G4cout << std::setw(27) << " " << "below " << ETransition / GeV
         << " GeV, Glauber-Gribov above " << G4endl;
}

GetElementCrossSection()

G4double G4CrossSectionPairGG::GetElementCrossSection ( const G4DynamicParticle *  aParticle, G4int  Z, const G4Material *  mat = 0  )

virtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 88 of file G4CrossSectionPairGG.cc.

{
   G4double Xsec(0.);
 
   if (aParticle->GetKineticEnergy() < ETransition)
   {
      Xsec = theLowX->GetElementCrossSection(aParticle, ZZ, mat);
   } else {
 
      std::vector<ParticleXScale>::iterator iter = scale_factors.begin();
      G4ParticleDefinition * pDef = aParticle->GetDefinition();
      while (iter != scale_factors.end() && (*iter).first != pDef)
      {
         ++iter;
      }
      if (iter != scale_factors.end() )
      {
         G4int AA = G4lrint(NistMan->GetAtomicMassAmu(ZZ));
         Xsec = theHighX->GetInelasticGlauberGribov(aParticle, ZZ, AA)
                            * (*iter).second[ZZ];
         if (verboseLevel > 2)
         {
            G4cout << " scaling .." << ZZ << " " << AA << " "
                  << (*iter).second[ZZ] << " "
                  << theHighX->GetInelasticGlauberGribov(aParticle, ZZ, AA)
                  << "  " << Xsec << G4endl;
         }
      } else {
         // BuildPhysicsTable not done for pDef=aParticle->GetDefinition
         //  build table, and recurse
         BuildPhysicsTable(*pDef);
         Xsec=GetElementCrossSection(aParticle, ZZ, mat);
      }
   }
 
   return Xsec;
}

Referenced by GetElementCrossSection().

IsElementApplicable()

G4bool G4CrossSectionPairGG::IsElementApplicable ( const G4DynamicParticle *  aParticle, G4int  Z, const G4Material *  mat = 0  )

virtual

Reimplemented from G4VCrossSectionDataSet.

Definition at line 76 of file G4CrossSectionPairGG.cc.

                                                                          {
   G4bool isApplicable(false);
   G4double Ekin = aParticle->GetKineticEnergy();
   if (Ekin <= ETransition) {
      isApplicable = theLowX->IsElementApplicable(aParticle, Z, mat);
   } else if (Z > 1) {
      isApplicable = true;
   }
   return isApplicable;
}

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

• G4CrossSectionPairGG.hh
• G4CrossSectionPairGG.cc