Gabriele Cosmo
145 lines
5.0 KiB
C++
145 lines
5.0 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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//
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// Author: Maria Grazia Pia (Maria.Grazia.Pia@cern.ch)
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//
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// History:
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// -----------
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// 16 Sep 2001 MGP Created
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// 26 Sep 2001 V.Ivanchenko Hide copy constructor and assignement operator
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// 18 Apr 2002 V.Ivanchenko Move member function ValueForMaterial to public
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// 21 Jan 2003 V.Ivanchenko Cut per region
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// 15 Jul 2009 N.A.Karakatsanis New methods added for loading logarithmic data
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// to enhance computing performance of interpolation
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//
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// -------------------------------------------------------------------
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// Class description:
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// Low Energy Electromagnetic Physics
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// Base class for cross section manager for an electromagnetic physics process
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// -------------------------------------------------------------------
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#ifndef G4VCROSSSECTIONHANDLER_HH
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#define G4VCROSSSECTIONHANDLER_HH 1
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#include <map>
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#include <vector>
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#include <CLHEP/Units/SystemOfUnits.h>
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#include "globals.hh"
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#include "G4DataVector.hh"
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#include "G4MaterialCutsCouple.hh"
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class G4VDataSetAlgorithm;
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class G4VEMDataSet;
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class G4Material;
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class G4Element;
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class G4VCrossSectionHandler {
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public:
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explicit G4VCrossSectionHandler();
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explicit G4VCrossSectionHandler(G4VDataSetAlgorithm* interpolation,
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G4double minE = 250*CLHEP::eV,
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G4double maxE = 100*CLHEP::GeV,
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G4int nBins = 200,
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G4double unitE = CLHEP::MeV,
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G4double unitData = CLHEP::barn,
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G4int minZ = 1, G4int maxZ = 99);
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virtual ~G4VCrossSectionHandler();
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void Initialise(G4VDataSetAlgorithm* interpolation = nullptr,
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G4double minE = 250*CLHEP::eV,
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G4double maxE = 100*CLHEP::GeV,
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G4int numberOfBins = 200,
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G4double unitE = CLHEP::MeV,
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G4double unitData = CLHEP::barn,
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G4int minZ = 1, G4int maxZ = 99);
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G4int SelectRandomAtom(const G4MaterialCutsCouple* couple, G4double e) const;
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const G4Element* SelectRandomElement(const G4MaterialCutsCouple* material,
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G4double e) const;
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G4int SelectRandomShell(G4int Z, G4double e) const;
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G4VEMDataSet* BuildMeanFreePathForMaterials(const G4DataVector* energyCuts = nullptr);
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G4double FindValue(G4int Z, G4double e) const;
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G4double FindValue(G4int Z, G4double e, G4int shellIndex) const;
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G4double ValueForMaterial(const G4Material* material, G4double e) const;
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void LoadData(const G4String& dataFile);
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void LoadNonLogData(const G4String& dataFile);
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void LoadShellData(const G4String& dataFile);
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void PrintData() const;
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void Clear();
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G4VCrossSectionHandler(const G4VCrossSectionHandler&) = delete;
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G4VCrossSectionHandler & operator=(const G4VCrossSectionHandler &right) = delete;
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protected:
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G4int NumberOfComponents(G4int Z) const;
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void ActiveElements();
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// Factory method
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virtual std::vector<G4VEMDataSet*>* BuildCrossSectionsForMaterials(const G4DataVector& energyVector,
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const G4DataVector* energyCuts = nullptr) = 0;
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// Factory method
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virtual G4VDataSetAlgorithm* CreateInterpolation();
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const G4VDataSetAlgorithm* GetInterpolation() const { return interpolation; }
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private:
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G4VDataSetAlgorithm* interpolation;
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G4DataVector activeZ;
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std::map<G4int,G4VEMDataSet*,std::less<G4int> > dataMap;
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std::vector<G4VEMDataSet*>* crossSections;
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G4double eMin;
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G4double eMax;
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G4double unit1;
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G4double unit2;
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G4int zMin;
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G4int zMax;
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G4int nBins;
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};
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#endif
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