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24 // ********************************************************************
25 //
26 //
27 //
28 // Author: Maria Grazia Pia (Maria.Grazia.Pia@cern.ch)
29 //
30 // History:
31 // -----------
32 // 16 Sep 2001 MGP Created
33 // 26 Sep 2001 V.Ivanchenko Hide copy constructor and assignement operator
34 // 18 Apr 2002 V.Ivanchenko Move member function ValueForMaterial to public
35 // 21 Jan 2003 V.Ivanchenko Cut per region
36 //
37 // -------------------------------------------------------------------
38
39 // Class description:
40 // Low Energy Electromagnetic Physics
41 // Base class for cross section manager for an electromagnetic physics process
42 // Further documentation available from http://www.ge.infn.it/geant4/lowE
43
44 // -------------------------------------------------------------------
45
46 #ifndef G4RDVCROSSSECTIONHANDLER_HH
47 #define G4RDVCROSSSECTIONHANDLER_HH 1
48
49 #include <map>
50 #include <vector>
51 #include <CLHEP/Units/SystemOfUnits.h>
52
53 #include "globals.hh"
54 #include "G4DataVector.hh"
55 #include "G4MaterialCutsCouple.hh"
56
57 class G4RDVDataSetAlgorithm;
58 class G4RDVEMDataSet;
59 class G4Material;
60 class G4Element;
61
62 class G4RDVCrossSectionHandler {
63
64 public:
65
66 G4RDVCrossSectionHandler();
67
68 G4RDVCrossSectionHandler(G4RDVDataSetAlgorithm* interpolation,
69 G4double minE = 250*CLHEP::eV, G4double maxE = 100*CLHEP::GeV,
70 G4int nBins = 200,
71 G4double unitE = CLHEP::MeV, G4double unitData = CLHEP::barn,
72 G4int minZ = 1, G4int maxZ = 99);
73
74 virtual ~G4RDVCrossSectionHandler();
75
76 void Initialise(G4RDVDataSetAlgorithm* interpolation = 0,
77 G4double minE = 250*CLHEP::eV, G4double maxE = 100*CLHEP::GeV,
78 G4int numberOfBins = 200,
79 G4double unitE = CLHEP::MeV, G4double unitData = CLHEP::barn,
80 G4int minZ = 1, G4int maxZ = 99);
81
82 G4int SelectRandomAtom(const G4MaterialCutsCouple* couple, G4double e) const;
83
84 const G4Element* SelectRandomElement(const G4MaterialCutsCouple* material,
85 G4double e) const;
86
87 G4int SelectRandomShell(G4int Z, G4double e) const;
88
89 G4RDVEMDataSet* BuildMeanFreePathForMaterials(const G4DataVector* energyCuts = 0);
90
91 G4double FindValue(G4int Z, G4double e) const;
92
93 G4double FindValue(G4int Z, G4double e, G4int shellIndex) const;
94
95 G4double ValueForMaterial(const G4Material* material, G4double e) const;
96
97 void LoadData(const G4String& dataFile);
98
99 void LoadShellData(const G4String& dataFile);
100
101 void PrintData() const;
102
103 void Clear();
104
105 protected:
106
107 G4int NumberOfComponents(G4int Z) const;
108
109 void ActiveElements();
110
111 // Factory method
112 virtual std::vector<G4RDVEMDataSet*>* BuildCrossSectionsForMaterials(const G4DataVector& energyVector,
113 const G4DataVector* energyCuts = 0) = 0;
114
115 // Factory method
116 virtual G4RDVDataSetAlgorithm* CreateInterpolation();
117
118 const G4RDVDataSetAlgorithm* GetInterpolation() const { return interpolation; }
119
120
121 private:
122
123 // Hide copy constructor and assignment operator
124 G4RDVCrossSectionHandler(const G4RDVCrossSectionHandler&);
125 G4RDVCrossSectionHandler & operator=(const G4RDVCrossSectionHandler &right);
126
127 G4RDVDataSetAlgorithm* interpolation;
128
129 G4double eMin;
130 G4double eMax;
131 G4int nBins;
132
133 G4double unit1;
134 G4double unit2;
135
136 G4int zMin;
137 G4int zMax;
138
139 G4DataVector activeZ;
140
141 std::map<G4int,G4RDVEMDataSet*,std::less<G4int> > dataMap;
142
143 std::vector<G4RDVEMDataSet*>* crossSections;
144 };
145
146 #endif
147