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G4GSPWACorrections.hh
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26 // $Id: $
27 //
28 // ----------------------------------------------------------------------------
29 //
30 // GEANT4 Class header file
31 //
32 // File name: G4GSPWACorrections
33 //
34 // Author: Mihaly Novak
35 //
36 // Creation date: 17.10.2017
37 //
38 // Modifications:
39 //
40 // Class description: class to describe and store correction factors to the
41 // integrated quantities of G4GoudsmitSaundersonMscModel (screening parameter,
42 // first and second moments) derived by using accurate Dirac-PWA based
43 // integrated quantities.
44 //
45 // ----------------------------------------------------------------------------
46 
47 #ifndef G4GSPWACorrections_h
48 #define G4GSPWACorrections_h 1
49 
51 
52 #include "globals.hh"
53 
54 #include <vector>
55 #include <string>
56 #include <sstream>
57 
58 class G4Material;
59 class G4Element;
60 
61 
63 public:
64  G4GSPWACorrections(G4bool iselectron=true);
65 
67 
68  void Initialise();
69 
70  void GetPWACorrectionFactors(G4double logekin, G4double beta2, G4int matindx,
71  G4double &corToScr, G4double &corToQ1, G4double &corToG2PerG1);
72 private:
73  void InitDataPerElement();
74 
75  void InitDataPerMaterials();
76 
77  void LoadDataElement(const G4Element*);
78 
79  void InitDataMaterial(const G4Material*);
80 
81  void ClearDataPerElement();
82 
83  void ClearDataPerMaterial();
84 
85  // either per material or per Z
86  struct DataPerMaterial {
87  std::vector<G4double> fCorScreening; // correction factor to Moliere screening parameter
88  std::vector<G4double> fCorFirstMoment; // correction factor to first moment
89  std::vector<G4double> fCorSecondMoment; // correction factor to second
90  };
91 
92 
93 // data members
94 private:
96  static constexpr G4int gMaxZet = 98; // max. Z for which correction data were computed (98)
97  static constexpr G4int gNumEkin = 31; // number of kinetic energy grid points for Mott correction
98  static constexpr G4int gNumBeta2 = 16; // \beta^2 values between [fMinBeta2-fMaxBeta2]
99  static constexpr G4double gMinEkin = 1.*CLHEP::keV; // minimum kinetic energy value
100  static constexpr G4double gMidEkin = 100.*CLHEP::keV; // kinetic energy at the border of the E_{kin}-\beta^2 grids
101  static constexpr G4double gMaxBeta2 = 0.9999; // maximum \beta^2 value
102  //
103  G4double fMaxEkin; // from max fMaxBeta2 = 0.9999 (~50.5889 [MeV])
104  G4double fLogMinEkin; // \ln[fMinEkin]
105  G4double fInvLogDelEkin; // 1/[\ln(fMidEkin/fMinEkin)/(fNumEkin-fNumBeta2)]
106  G4double fMinBeta2; // <= E_{kin}=100 [keV] (~0.300546)
107  G4double fInvDelBeta2; // 1/[(fMaxBeta2-fMinBeta2)/(fNumBeta2-1)]
108  //
109  static const std::string gElemSymbols[];
110  //
111  std::vector<DataPerMaterial*> fDataPerElement; // size will be gMaxZet+1; won't be null only at used Z indices
112  std::vector<DataPerMaterial*> fDataPerMaterial; // size will #materials; won't be null only at used mat. indices
113 
114 };
115 
116 #endif
static constexpr G4double gMaxBeta2
G4GSPWACorrections(G4bool iselectron=true)
std::vector< DataPerMaterial * > fDataPerMaterial
static constexpr G4double gMinEkin
void GetPWACorrectionFactors(G4double logekin, G4double beta2, G4int matindx, G4double &corToScr, G4double &corToQ1, G4double &corToG2PerG1)
static constexpr G4int gMaxZet
double G4double
Definition: G4Types.hh:76
bool G4bool
Definition: G4Types.hh:79
static constexpr G4int gNumBeta2
static constexpr G4int gNumEkin
std::vector< G4double > fCorSecondMoment
int G4int
Definition: G4Types.hh:78
void LoadDataElement(const G4Element *)
static const std::string gElemSymbols[]
std::vector< G4double > fCorFirstMoment
void InitDataMaterial(const G4Material *)
static constexpr double keV
static constexpr G4double gMidEkin
std::vector< DataPerMaterial * > fDataPerElement