[819] | 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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[1192] | 27 | // $Id: G4CrossSectionHandler.cc,v 1.21 2009/09/27 10:47:42 sincerti Exp $ |
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[1228] | 28 | // GEANT4 tag $Name: geant4-09-03 $ |
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[819] | 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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[1192] | 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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[819] | 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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[1192] | 78 | G4DataVector* log_energies; |
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| 79 | G4DataVector* log_data; |
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| 80 | |
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[819] | 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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[1192] | 110 | log_energies = new G4DataVector; |
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| 111 | log_data = new G4DataVector; |
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[819] | 112 | |
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[1192] | 113 | |
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[819] | 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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[1192] | 118 | if (e==0.) e=1e-300; |
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| 119 | log_energies->push_back(std::log10(e)); |
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[819] | 120 | G4double cross = density*FindValue(Z,e); |
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| 121 | data->push_back(cross); |
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[1192] | 122 | if (cross==0.) cross=1e-300; |
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| 123 | log_data->push_back(std::log10(cross)); |
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[819] | 124 | } |
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| 125 | |
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| 126 | G4VDataSetAlgorithm* algo1 = interpolationAlgo->Clone(); |
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[1192] | 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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[819] | 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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