1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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7 | // * conditions of the Geant4 Software License, included in the file * |
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8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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9 | // * include a list of copyright holders. * |
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10 | // * * |
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11 | // * Neither the authors of this software system, nor their employing * |
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12 | // * institutes,nor the agencies providing financial support for this * |
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13 | // * work make any representation or warranty, express or implied, * |
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14 | // * regarding this software system or assume any liability for its * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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16 | // * for the full disclaimer and the limitation of liability. * |
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17 | // * * |
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18 | // * This code implementation is the result of the scientific and * |
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19 | // * technical work of the GEANT4 collaboration. * |
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20 | // * By using, copying, modifying or distributing the software (or * |
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21 | // * any work based on the software) you agree to acknowledge its * |
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22 | // * use in resulting scientific publications, and indicate your * |
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23 | // * acceptance of all terms of the Geant4 Software license. * |
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24 | // ******************************************************************** |
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25 | // |
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26 | // |
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27 | // $Id: G4CrossSectionHandler.cc,v 1.21 2009/09/27 10:47:42 sincerti Exp $ |
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28 | // GEANT4 tag $Name: geant4-09-03 $ |
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29 | // |
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30 | // Author: Maria Grazia Pia (Maria.Grazia.Pia@cern.ch) |
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31 | // |
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32 | // History: |
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33 | // ----------- |
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34 | // 1 Aug 2001 MGP Created |
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35 | // 19 Jul 2002 VI Create composite data set for material |
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36 | // 24 Apr 2003 VI Cut per region mfpt |
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37 | // |
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38 | // 15 Jul 2009 Nicolas A. Karakatsanis |
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39 | // |
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40 | // - BuildCrossSectionForMaterials method was revised in order to calculate the |
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41 | // logarithmic values of the loaded data. |
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42 | // It retrieves the data values from the G4EMLOW data files but, then, calculates the |
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43 | // respective log values and loads them to seperate data structures. |
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44 | // The EM data sets, initialized this way, contain both non-log and log values. |
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45 | // These initialized data sets can enhance the computing performance of data interpolation |
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46 | // operations |
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47 | // |
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48 | // ------------------------------------------------------------------- |
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49 | |
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50 | #include "G4CrossSectionHandler.hh" |
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51 | #include "G4VDataSetAlgorithm.hh" |
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52 | #include "G4VEMDataSet.hh" |
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53 | #include "G4EMDataSet.hh" |
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54 | #include "G4CompositeEMDataSet.hh" |
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55 | #include "G4ShellEMDataSet.hh" |
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56 | #include "G4ProductionCutsTable.hh" |
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57 | #include "G4Material.hh" |
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58 | #include "G4Element.hh" |
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59 | #include "Randomize.hh" |
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60 | #include <map> |
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61 | #include <vector> |
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62 | |
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63 | #include "G4LogLogInterpolation.hh" |
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64 | |
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65 | G4CrossSectionHandler::G4CrossSectionHandler() |
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66 | { } |
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67 | |
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68 | G4CrossSectionHandler::~G4CrossSectionHandler() |
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69 | { } |
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70 | |
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71 | std::vector<G4VEMDataSet*>* |
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72 | G4CrossSectionHandler::BuildCrossSectionsForMaterials(const G4DataVector& energyVector, |
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73 | const G4DataVector*) |
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74 | { |
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75 | G4DataVector* energies; |
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76 | G4DataVector* data; |
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77 | |
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78 | G4DataVector* log_energies; |
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79 | G4DataVector* log_data; |
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80 | |
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81 | std::vector<G4VEMDataSet*>* matCrossSections = new std::vector<G4VEMDataSet*>; |
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82 | |
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83 | const G4ProductionCutsTable* theCoupleTable= |
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84 | G4ProductionCutsTable::GetProductionCutsTable(); |
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85 | size_t numOfCouples = theCoupleTable->GetTableSize(); |
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86 | |
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87 | size_t nOfBins = energyVector.size(); |
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88 | const G4VDataSetAlgorithm* interpolationAlgo = CreateInterpolation(); |
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89 | |
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90 | for (size_t m=0; m<numOfCouples; m++) |
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91 | { |
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92 | const G4MaterialCutsCouple* couple = theCoupleTable->GetMaterialCutsCouple(m); |
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93 | const G4Material* material= couple->GetMaterial(); |
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94 | G4int nElements = material->GetNumberOfElements(); |
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95 | const G4ElementVector* elementVector = material->GetElementVector(); |
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96 | const G4double* nAtomsPerVolume = material->GetAtomicNumDensityVector(); |
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97 | |
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98 | G4VDataSetAlgorithm* algo = interpolationAlgo->Clone(); |
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99 | |
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100 | G4VEMDataSet* setForMat = new G4CompositeEMDataSet(algo,1.,1.); |
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101 | |
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102 | for (G4int i=0; i<nElements; i++) { |
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103 | |
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104 | G4int Z = (G4int) (*elementVector)[i]->GetZ(); |
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105 | G4double density = nAtomsPerVolume[i]; |
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106 | |
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107 | energies = new G4DataVector; |
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108 | data = new G4DataVector; |
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109 | |
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110 | log_energies = new G4DataVector; |
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111 | log_data = new G4DataVector; |
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112 | |
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113 | |
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114 | for (size_t bin=0; bin<nOfBins; bin++) |
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115 | { |
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116 | G4double e = energyVector[bin]; |
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117 | energies->push_back(e); |
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118 | if (e==0.) e=1e-300; |
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119 | log_energies->push_back(std::log10(e)); |
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120 | G4double cross = density*FindValue(Z,e); |
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121 | data->push_back(cross); |
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122 | if (cross==0.) cross=1e-300; |
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123 | log_data->push_back(std::log10(cross)); |
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124 | } |
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125 | |
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126 | G4VDataSetAlgorithm* algo1 = interpolationAlgo->Clone(); |
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127 | |
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128 | // G4VEMDataSet* elSet = new G4EMDataSet(i,energies,data,algo1,1.,1.); |
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129 | |
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130 | G4VEMDataSet* elSet = new G4EMDataSet(i,energies,data,log_energies,log_data,algo1,1.,1.); |
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131 | |
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132 | setForMat->AddComponent(elSet); |
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133 | } |
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134 | |
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135 | matCrossSections->push_back(setForMat); |
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136 | } |
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137 | return matCrossSections; |
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138 | } |
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139 | |
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