Geant4  10.00.p02
G4BremsstrahlungCrossSectionHandler.cc
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26 // $Id: G4BremsstrahlungCrossSectionHandler.cc 66241 2012-12-13 18:34:42Z gunter $
27 //
28 // -------------------------------------------------------------------
29 //
30 // GEANT4 Class file
31 //
32 //
33 // File name: G4BremsstrahlungCrossSectionHandler
34 //
35 // Author: V.Ivanchenko (Vladimir.Ivanchenko@cern.ch)
36 //
37 // Creation date: 25 September 2001
38 //
39 // Modifications:
40 //
41 // 10.10.2001 MGP Revision to improve code quality and consistency with design
42 // 21.01.2003 VI cut per region
43 // 03.03.2009 LP Added public method to make a easier migration of
44 // G4LowEnergyBremsstrahlung to G4LivermoreBremsstrahlungModel
45 //
46 // 15 Jul 2009 Nicolas A. Karakatsanis
47 //
48 // - BuildCrossSectionForMaterials method was revised in order to calculate the
49 // logarithmic values of the loaded data.
50 // It retrieves the data values from the G4EMLOW data files but, then, calculates the
51 // respective log values and loads them to seperate data structures.
52 // The EM data sets, initialized this way, contain both non-log and log values.
53 // These initialized data sets can enhance the computing performance of data interpolation
54 // operations
55 //
56 //
57 //
58 //
59 // -------------------------------------------------------------------
60 
63 #include "G4DataVector.hh"
64 #include "G4CompositeEMDataSet.hh"
65 #include "G4VDataSetAlgorithm.hh"
67 #include "G4VEMDataSet.hh"
68 #include "G4EMDataSet.hh"
69 #include "G4Material.hh"
70 #include "G4ProductionCutsTable.hh"
71 
72 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
73 
76  : theBR(spec)
77 {
79 }
80 
81 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
82 
84 {
85  delete interp;
86 }
87 
88 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
89 
90 std::vector<G4VEMDataSet*>*
92  const G4DataVector* energyCuts)
93 {
94  std::vector<G4VEMDataSet*>* set = new std::vector<G4VEMDataSet*>;
95 
96  G4DataVector* energies;
97  G4DataVector* cs;
98 
99  G4DataVector* log_energies;
100  G4DataVector* log_cs;
101 
102  G4int nOfBins = energyVector.size();
103 
104  const G4ProductionCutsTable* theCoupleTable=
106  size_t numOfCouples = theCoupleTable->GetTableSize();
107 
108  for (size_t mLocal=0; mLocal<numOfCouples; mLocal++) {
109 
110  const G4MaterialCutsCouple* couple = theCoupleTable->GetMaterialCutsCouple(mLocal);
111  const G4Material* material= couple->GetMaterial();
112  const G4ElementVector* elementVector = material->GetElementVector();
113  const G4double* nAtomsPerVolume = material->GetVecNbOfAtomsPerVolume();
114  G4int nElements = material->GetNumberOfElements();
115 
116  G4double tcut = (*energyCuts)[mLocal];
117 
118  G4VDataSetAlgorithm* algo = interp->Clone();
119  G4VEMDataSet* setForMat = new G4CompositeEMDataSet(algo,1.,1.);
120 
121  for (G4int i=0; i<nElements; i++) {
122 
123  G4int Z = (G4int) ((*elementVector)[i]->GetZ());
124 
125  energies = new G4DataVector;
126  cs = new G4DataVector;
127 
128  log_energies = new G4DataVector;
129  log_cs = new G4DataVector;
130 
131  G4double density = nAtomsPerVolume[i];
132 
133  for (G4int bin=0; bin<nOfBins; bin++) {
134 
135  G4double e = energyVector[bin];
136  energies->push_back(e);
137  if (e==0.) e=1e-300;
138  log_energies->push_back(std::log10(e));
139  G4double value = 0.0;
140 
141  if(e > tcut) {
142  G4double elemCs = FindValue(Z, e);
143 
144  value = theBR->Probability(Z, tcut, e, e);
145 
146  value *= elemCs*density;
147  }
148  cs->push_back(value);
149 
150  if (value==0.) value=1e-300;
151  log_cs->push_back(std::log10(value));
152  }
153  G4VDataSetAlgorithm* algol = interp->Clone();
154 
155  //G4VEMDataSet* elSet = new G4EMDataSet(i,energies,cs,algol,1.,1.);
156 
157  G4VEMDataSet* elSet = new G4EMDataSet(i,energies,cs,log_energies,log_cs,algol,1.,1.);
158 
159  setForMat->AddComponent(elSet);
160  }
161  set->push_back(setForMat);
162  }
163 
164  return set;
165 }
166 
167 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
168 
170  G4double cutEnergy,
171  G4int Z)
172 {
173  G4double value = 0.;
174  if(energy > cutEnergy)
175  {
176  G4double elemCs = FindValue(Z, energy);
177  value = theBR->Probability(Z,cutEnergy, energy, energy);
178  value *= elemCs;
179  }
180  return value;
181 }
std::vector< G4Element * > G4ElementVector
const G4ElementVector * GetElementVector() const
Definition: G4Material.hh:188
int G4int
Definition: G4Types.hh:78
virtual G4VDataSetAlgorithm * Clone() const =0
std::vector< G4VEMDataSet * > * BuildCrossSectionsForMaterials(const G4DataVector &energyVector, const G4DataVector *energyCuts)
G4double density
Definition: TRTMaterials.hh:39
G4double FindValue(G4int Z, G4double e) const
const G4double * GetVecNbOfAtomsPerVolume() const
Definition: G4Material.hh:204
virtual void AddComponent(G4VEMDataSet *dataSet)=0
virtual G4double Probability(G4int Z, G4double minKineticEnergy, G4double maxKineticEnergy, G4double kineticEnergy, G4int shell=0, const G4ParticleDefinition *pd=0) const =0
static G4ProductionCutsTable * GetProductionCutsTable()
const G4MaterialCutsCouple * GetMaterialCutsCouple(G4int i) const
G4double energy(const ThreeVector &p, const G4double m)
G4BremsstrahlungCrossSectionHandler(const G4VEnergySpectrum *spectrum, G4VDataSetAlgorithm *interpolation)
G4double GetCrossSectionAboveThresholdForElement(G4double energy, G4double cutEnergy, G4int Z)
size_t GetNumberOfElements() const
Definition: G4Material.hh:184
double G4double
Definition: G4Types.hh:76
const G4Material * GetMaterial() const