G4CrossSectionHandler Class Reference

#include <G4CrossSectionHandler.hh>

Inheritance diagram for G4CrossSectionHandler:

Collaboration diagram for G4CrossSectionHandler:

Public Member Functions
	G4CrossSectionHandler ()
	~G4CrossSectionHandler ()
Public Member Functions inherited from G4VCrossSectionHandler
	G4VCrossSectionHandler ()
	G4VCrossSectionHandler (G4VDataSetAlgorithm *interpolation, G4double minE=250 *CLHEP::eV, G4double maxE=100 *CLHEP::GeV, G4int nBins=200, G4double unitE=CLHEP::MeV, G4double unitData=CLHEP::barn, G4int minZ=1, G4int maxZ=99)
virtual	~G4VCrossSectionHandler ()
void	Initialise (G4VDataSetAlgorithm *interpolation=0, G4double minE=250 *CLHEP::eV, G4double maxE=100 *CLHEP::GeV, G4int numberOfBins=200, G4double unitE=CLHEP::MeV, G4double unitData=CLHEP::barn, G4int minZ=1, G4int maxZ=99)
G4int	SelectRandomAtom (const G4MaterialCutsCouple *couple, G4double e) const
const G4Element *	SelectRandomElement (const G4MaterialCutsCouple *material, G4double e) const
G4int	SelectRandomShell (G4int Z, G4double e) const
G4VEMDataSet *	BuildMeanFreePathForMaterials (const G4DataVector *energyCuts=0)
G4double	FindValue (G4int Z, G4double e) const
G4double	FindValue (G4int Z, G4double e, G4int shellIndex) const
G4double	ValueForMaterial (const G4Material *material, G4double e) const
void	LoadData (const G4String &dataFile)
void	LoadNonLogData (const G4String &dataFile)
void	LoadShellData (const G4String &dataFile)
void	PrintData () const
void	Clear ()

Protected Member Functions
virtual std::vector < G4VEMDataSet * > *	BuildCrossSectionsForMaterials (const G4DataVector &energyVector, const G4DataVector *energyCuts=0)
Protected Member Functions inherited from G4VCrossSectionHandler
G4int	NumberOfComponents (G4int Z) const
void	ActiveElements ()
virtual G4VDataSetAlgorithm *	CreateInterpolation ()
const G4VDataSetAlgorithm *	GetInterpolation () const

Detailed Description

Definition at line 57 of file G4CrossSectionHandler.hh.

Constructor & Destructor Documentation

G4CrossSectionHandler::G4CrossSectionHandler

(

)

Definition at line 64 of file G4CrossSectionHandler.cc.

{ }

G4CrossSectionHandler::~G4CrossSectionHandler

(

)

Definition at line 67 of file G4CrossSectionHandler.cc.

{ }

Member Function Documentation

std::vector< G4VEMDataSet * > * G4CrossSectionHandler::BuildCrossSectionsForMaterials ( const G4DataVector &  energyVector, const G4DataVector *  energyCuts = 0  )

protectedvirtual

Implements G4VCrossSectionHandler.

Definition at line 71 of file G4CrossSectionHandler.cc.

{
  G4DataVector* energies;
  G4DataVector* data;

  G4DataVector* log_energies;
  G4DataVector* log_data;

  std::vector<G4VEMDataSet*>* matCrossSections = new std::vector<G4VEMDataSet*>;

  const G4ProductionCutsTable* theCoupleTable=
        G4ProductionCutsTable::GetProductionCutsTable();
  size_t numOfCouples = theCoupleTable->GetTableSize();

  size_t nOfBins = energyVector.size();
  const G4VDataSetAlgorithm* interpolationAlgo = CreateInterpolation();

  for (size_t mLocal=0; mLocal<numOfCouples; mLocal++)
    {
      const G4MaterialCutsCouple* couple = theCoupleTable->GetMaterialCutsCouple(mLocal);
      const G4Material* material= couple->GetMaterial();
      G4int nElements = material->GetNumberOfElements();
      const G4ElementVector* elementVector = material->GetElementVector();
      const G4double* nAtomsPerVolume = material->GetAtomicNumDensityVector();

      G4VDataSetAlgorithm* algo = interpolationAlgo->Clone();

      G4VEMDataSet* setForMat = new G4CompositeEMDataSet(algo,1.,1.);

      for (G4int i=0; i<nElements; i++) {
 
        G4int Z = (G4int) (*elementVector)[i]->GetZ();
        G4double density = nAtomsPerVolume[i];

        energies = new G4DataVector;
        data = new G4DataVector;

        log_energies = new G4DataVector;
        log_data = new G4DataVector;


        for (size_t bin=0; bin<nOfBins; bin++)
      {
        G4double e = energyVector[bin];
        energies->push_back(e);
            if (e==0.) e=1e-300;
            log_energies->push_back(std::log10(e));
        G4double cross = density*FindValue(Z,e);
        data->push_back(cross);
            if (cross==0.) cross=1e-300;
            log_data->push_back(std::log10(cross));
      }

        G4VDataSetAlgorithm* algo1 = interpolationAlgo->Clone();

//      G4VEMDataSet* elSet = new G4EMDataSet(i,energies,data,algo1,1.,1.);

        G4VEMDataSet* elSet = new G4EMDataSet(i,energies,data,log_energies,log_data,algo1,1.,1.);

        setForMat->AddComponent(elSet);
      }

      matCrossSections->push_back(setForMat);
    }
  delete interpolationAlgo;
  return matCrossSections;
}

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

• source/geant4.10.03.p02/source/processes/electromagnetic/lowenergy/include/G4CrossSectionHandler.hh
• source/geant4.10.03.p02/source/processes/electromagnetic/lowenergy/src/G4CrossSectionHandler.cc