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25 //
26 //
27 // -------------------------------------------------------------------
28 //
29 // GEANT4 Class file
30 //
31 //
32 // File name: G4RDBremsstrahlungCrossSectionHandler
33 //
34 // Author: V.Ivanchenko (Vladimir.Ivanchenko@cern.ch)
35 //
36 // Creation date: 25 September 2001
37 //
38 // Modifications:
39 // 10.10.2001 MGP Revision to improve code quality and consistency with design
40 // 21.01.2003 VI cut per region
41 //
42 // -------------------------------------------------------------------
43
44 #include "G4RDBremsstrahlungCrossSectionHandler.hh"
45 #include "G4RDeBremsstrahlungSpectrum.hh"
46 #include "G4DataVector.hh"
47 #include "G4RDCompositeEMDataSet.hh"
48 #include "G4RDVDataSetAlgorithm.hh"
49 #include "G4RDSemiLogInterpolation.hh"
50 #include "G4RDVEMDataSet.hh"
51 #include "G4RDEMDataSet.hh"
52 #include "G4Material.hh"
53 #include "G4ProductionCutsTable.hh"
54
55 G4RDBremsstrahlungCrossSectionHandler::G4RDBremsstrahlungCrossSectionHandler(const G4RDVEnergySpectrum* spec,
56 G4RDVDataSetAlgorithm* )
57 : theBR(spec)
58 {
59 interp = new G4RDSemiLogInterpolation();
60 }
61
62
63 G4RDBremsstrahlungCrossSectionHandler::~G4RDBremsstrahlungCrossSectionHandler()
64 {
65 delete interp;
66 }
67
68
69 std::vector<G4RDVEMDataSet*>*
70 G4RDBremsstrahlungCrossSectionHandler::BuildCrossSectionsForMaterials(const G4DataVector& energyVector,
71 const G4DataVector* energyCuts)
72 {
73 std::vector<G4RDVEMDataSet*>* set = new std::vector<G4RDVEMDataSet*>;
74
75 G4DataVector* energies;
76 G4DataVector* cs;
77 G4int nOfBins = energyVector.size();
78
79 const G4ProductionCutsTable* theCoupleTable=
80 G4ProductionCutsTable::GetProductionCutsTable();
81 size_t numOfCouples = theCoupleTable->GetTableSize();
82
83 for (size_t m=0; m<numOfCouples; m++) {
84
85 const G4MaterialCutsCouple* couple = theCoupleTable->GetMaterialCutsCouple(m);
86 const G4Material* material= couple->GetMaterial();
87 const G4ElementVector* elementVector = material->GetElementVector();
88 const G4double* nAtomsPerVolume = material->GetVecNbOfAtomsPerVolume();
89 G4int nElements = material->GetNumberOfElements();
90
91 G4double tcut = (*energyCuts)[m];
92
93 G4RDVDataSetAlgorithm* algo = interp->Clone();
94 G4RDVEMDataSet* setForMat = new G4RDCompositeEMDataSet(algo,1.,1.);
95
96 for (G4int i=0; i<nElements; i++) {
97
98 G4int Z = (G4int) ((*elementVector)[i]->GetZ());
99 energies = new G4DataVector;
100 cs = new G4DataVector;
101 G4double density = nAtomsPerVolume[i];
102
103 for (G4int bin=0; bin<nOfBins; bin++) {
104
105 G4double e = energyVector[bin];
106 energies->push_back(e);
107 G4double value = 0.0;
108
109 if(e > tcut) {
110 G4double elemCs = FindValue(Z, e);
111
112 value = theBR->Probability(Z, tcut, e, e);
113
114 value *= elemCs*density;
115 }
116 cs->push_back(value);
117 }
118 G4RDVDataSetAlgorithm* algol = interp->Clone();
119 G4RDVEMDataSet* elSet = new G4RDEMDataSet(i,energies,cs,algol,1.,1.);
120 setForMat->AddComponent(elSet);
121 }
122 set->push_back(setForMat);
123 }
124
125 return set;
126 }
127