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26 // ------------------------------------------- 26 // -------------------------------------------------------------------
27 // 27 //
28 // Geant4 Class file 28 // Geant4 Class file
29 // 29 //
30 // File name: G4PolarizedAnnihilationXS 30 // File name: G4PolarizedAnnihilationXS
31 // 31 //
32 // Author: Andreas Schaelicke and Pavel 32 // Author: Andreas Schaelicke and Pavel Starovoitov
33 // 33 //
34 // Class Description: 34 // Class Description:
35 // * calculates the differential cross secti 35 // * calculates the differential cross section (ME squared,
36 // without phase space) incoming positron 36 // without phase space) incoming positron (along positive z direction)
37 // annihilations with an electron at rest 37 // annihilations with an electron at rest
38 // * phi denotes the angle between the scatt 38 // * phi denotes the angle between the scattering plane and
39 // X axis of incoming partice reference fr 39 // X axis of incoming partice reference frame (PRF)
40 40
41 #ifndef G4PolarizedAnnihilationXS_h 41 #ifndef G4PolarizedAnnihilationXS_h
42 #define G4PolarizedAnnihilationXS_h 1 42 #define G4PolarizedAnnihilationXS_h 1
43 43
44 #include "G4StokesVector.hh" 44 #include "G4StokesVector.hh"
45 #include "G4VPolarizedXS.hh" 45 #include "G4VPolarizedXS.hh"
46 46
47 class G4PolarizedAnnihilationXS : public G4VPo 47 class G4PolarizedAnnihilationXS : public G4VPolarizedXS
48 { 48 {
49 public: 49 public:
50 G4PolarizedAnnihilationXS(); 50 G4PolarizedAnnihilationXS();
51 virtual ~G4PolarizedAnnihilationXS() overrid 51 virtual ~G4PolarizedAnnihilationXS() override;
52 52
53 virtual void Initialize(G4double eps, G4doub 53 virtual void Initialize(G4double eps, G4double gamma, G4double phi,
54 const G4StokesVector 54 const G4StokesVector& p0, const G4StokesVector& p1,
55 G4int flag = 0) over 55 G4int flag = 0) override;
56 56
57 G4double DiceEpsilon(); 57 G4double DiceEpsilon();
58 58
59 virtual G4double XSection(const G4StokesVect 59 virtual G4double XSection(const G4StokesVector& pol2,
60 const G4StokesVect 60 const G4StokesVector& pol3) override;
61 61
62 virtual G4double TotalXSection(G4double xmin 62 virtual G4double TotalXSection(G4double xmin, G4double xmax, G4double y,
63 const G4Stoke 63 const G4StokesVector& pol0,
64 const G4Stoke 64 const G4StokesVector& pol1) override;
65 65
66 // return expected mean polarisation 66 // return expected mean polarisation
67 virtual G4StokesVector GetPol2() override; 67 virtual G4StokesVector GetPol2() override;
68 virtual G4StokesVector GetPol3() override; 68 virtual G4StokesVector GetPol3() override;
69 69
70 // minimal energy fraction in TotalXSection 70 // minimal energy fraction in TotalXSection
71 virtual G4double GetXmin(G4double y) overrid 71 virtual G4double GetXmin(G4double y) override;
72 // maximal energy fraction in TotalXSection 72 // maximal energy fraction in TotalXSection
73 virtual G4double GetXmax(G4double y) overrid 73 virtual G4double GetXmax(G4double y) override;
74 74
75 G4double getVar(G4int); 75 G4double getVar(G4int);
76 // test routine 76 // test routine
77 void getCoeff(); 77 void getCoeff();
78 78
79 G4PolarizedAnnihilationXS& operator=(const G 79 G4PolarizedAnnihilationXS& operator=(const G4PolarizedAnnihilationXS& right) =
80 delete; 80 delete;
81 G4PolarizedAnnihilationXS(const G4PolarizedA 81 G4PolarizedAnnihilationXS(const G4PolarizedAnnihilationXS&) = delete;
82 82
83 private: 83 private:
84 void TotalXS(); 84 void TotalXS();
85 void DefineCoefficients(const G4StokesVector 85 void DefineCoefficients(const G4StokesVector& pol0,
86 const G4StokesVector 86 const G4StokesVector& pol1);
87 87
88 static constexpr G4double re2 = 88 static constexpr G4double re2 =
89 CLHEP::classic_electr_radius * CLHEP::clas 89 CLHEP::classic_electr_radius * CLHEP::classic_electr_radius;
90 90
91 // - part depending on the polarization of t 91 // - part depending on the polarization of the final positron
92 G4ThreeVector fPhi2; 92 G4ThreeVector fPhi2;
93 93
94 // - part depending on the polarization of t 94 // - part depending on the polarization of the final electron
95 G4ThreeVector fPhi3; 95 G4ThreeVector fPhi3;
96 96
97 G4double polxx, polyy, polzz, polxz, polzx, 97 G4double polxx, polyy, polzz, polxz, polzx, polxy, polyx, polyz, polzy;
98 98
99 // - unpolarised + part depending on the pol 99 // - unpolarised + part depending on the polarization of the initial pair
100 G4double fPhi0; 100 G4double fPhi0;
101 101
102 G4double fDice; 102 G4double fDice;
103 G4double fPolXS, fUnpXS; 103 G4double fPolXS, fUnpXS;
104 G4double ISPxx, ISPyy, ISPzz, ISPnd; 104 G4double ISPxx, ISPyy, ISPzz, ISPnd;
105 }; 105 };
106 #endif 106 #endif
107 107