physics/src/G4RDBremsstrahlungCrossSectionHandler.cc

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0025 //
0026 //
0027 // -------------------------------------------------------------------
0028 //
0029 // GEANT4 Class file
0030 //
0031 //
0032 // File name:     G4RDBremsstrahlungCrossSectionHandler
0033 //
0034 // Author:        V.Ivanchenko (Vladimir.Ivanchenko@cern.ch)
0035 //
0036 // Creation date: 25 September 2001
0037 //
0038 // Modifications:
0039 // 10.10.2001 MGP Revision to improve code quality and consistency with design
0040 // 21.01.2003 VI  cut per region
0041 //
0042 // -------------------------------------------------------------------
0043
0044 #include "G4RDBremsstrahlungCrossSectionHandler.hh"
0045 #include "G4RDeBremsstrahlungSpectrum.hh"
0046 #include "G4DataVector.hh"
0047 #include "G4RDCompositeEMDataSet.hh"
0048 #include "G4RDVDataSetAlgorithm.hh"
0049 #include "G4RDSemiLogInterpolation.hh"
0050 #include "G4RDVEMDataSet.hh"
0051 #include "G4RDEMDataSet.hh"
0052 #include "G4Material.hh"
0053 #include "G4ProductionCutsTable.hh"
0054
0055 G4RDBremsstrahlungCrossSectionHandler::G4RDBremsstrahlungCrossSectionHandler(const G4RDVEnergySpectrum* spec,
0056                                      G4RDVDataSetAlgorithm* )
0057   : theBR(spec)
0058 {
0059   interp = new G4RDSemiLogInterpolation();
0060 }
0061
0062
0063 G4RDBremsstrahlungCrossSectionHandler::~G4RDBremsstrahlungCrossSectionHandler()
0064 {
0065   delete interp;
0066 }
0067
0068
0069 std::vector<G4RDVEMDataSet*>*
0070 G4RDBremsstrahlungCrossSectionHandler::BuildCrossSectionsForMaterials(const G4DataVector& energyVector,
0071                                     const G4DataVector* energyCuts)
0072 {
0073   std::vector<G4RDVEMDataSet*>* set = new std::vector<G4RDVEMDataSet*>;
0074
0075   G4DataVector* energies;
0076   G4DataVector* cs;
0077   G4int nOfBins = energyVector.size();
0078
0079   const G4ProductionCutsTable* theCoupleTable=
0080         G4ProductionCutsTable::GetProductionCutsTable();
0081   size_t numOfCouples = theCoupleTable->GetTableSize();
0082
0083   for (size_t m=0; m<numOfCouples; m++) {
0084
0085     const G4MaterialCutsCouple* couple = theCoupleTable->GetMaterialCutsCouple(m);
0086     const G4Material* material= couple->GetMaterial();
0087     const G4ElementVector* elementVector = material->GetElementVector();
0088     const G4double* nAtomsPerVolume = material->GetVecNbOfAtomsPerVolume();
0089     G4int nElements = material->GetNumberOfElements();
0090
0091     G4double tcut  = (*energyCuts)[m];
0092
0093     G4RDVDataSetAlgorithm* algo = interp->Clone();
0094     G4RDVEMDataSet* setForMat = new G4RDCompositeEMDataSet(algo,1.,1.);
0095
0096     for (G4int i=0; i<nElements; i++) {
0097
0098       G4int Z = (G4int) ((*elementVector)[i]->GetZ());
0099       energies = new G4DataVector;
0100       cs       = new G4DataVector;
0101       G4double density = nAtomsPerVolume[i];
0102
0103       for (G4int bin=0; bin<nOfBins; bin++) {
0104
0105         G4double e = energyVector[bin];
0106         energies->push_back(e);
0107         G4double value = 0.0;
0108
0109         if(e > tcut) {
0110           G4double elemCs = FindValue(Z, e);
0111
0112           value  = theBR->Probability(Z, tcut, e, e);
0113
0114           value *= elemCs*density;
0115     }
0116         cs->push_back(value);
0117       }
0118       G4RDVDataSetAlgorithm* algol = interp->Clone();
0119       G4RDVEMDataSet* elSet = new G4RDEMDataSet(i,energies,cs,algol,1.,1.);
0120       setForMat->AddComponent(elSet);
0121     }
0122     set->push_back(setForMat);
0123   }
0124
0125   return set;
0126 }