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25 //
26 //
27 // Authors: G.Depaola & F.Longo
28 //
29
30 #ifndef G4LivermorePolarizedGammaConversionModel_h
31 #define G4LivermorePolarizedGammaConversionModel_h 1
32
33 #include "G4VEmModel.hh"
34 #include "G4PhysicsFreeVector.hh"
35
36 class G4ParticleChangeForGamma;
37
38 class G4LivermorePolarizedGammaConversionModel : public G4VEmModel
39 {
40 public:
41
42 explicit G4LivermorePolarizedGammaConversionModel(const G4ParticleDefinition* p = nullptr,
43 const G4String& nam = "LivermorePolarizedGammaConversion");
44 virtual ~G4LivermorePolarizedGammaConversionModel();
45
46 void Initialise(const G4ParticleDefinition*, const G4DataVector&) override;
47
48 void InitialiseLocal(const G4ParticleDefinition*,
49 G4VEmModel* masterModel) override;
50
51 void InitialiseForElement(const G4ParticleDefinition*, G4int Z) override;
52
53 G4double ComputeCrossSectionPerAtom(
54 const G4ParticleDefinition*,
55 G4double kinEnergy,
56 G4double Z,
57 G4double A=0,
58 G4double cut=0,
59 G4double emax=DBL_MAX) override;
60
61 void SampleSecondaries(std::vector<G4DynamicParticle*>*,
62 const G4MaterialCutsCouple*,
63 const G4DynamicParticle*,
64 G4double tmin,
65 G4double maxEnergy) override;
66
67 G4double MinPrimaryEnergy(const G4Material*,
68 const G4ParticleDefinition*,
69 G4double) override;
70
71 G4LivermorePolarizedGammaConversionModel & operator=(const G4LivermorePolarizedGammaConversionModel &right) = delete;
72 G4LivermorePolarizedGammaConversionModel(const G4LivermorePolarizedGammaConversionModel&) = delete;
73
74 private:
75 void ReadData(size_t Z, const char* path = 0);
76
77 G4double ScreenFunction1(G4double screenVariable);
78 G4double ScreenFunction2(G4double screenVariable);
79
80 // specific methods for polarization
81 G4ThreeVector GetRandomPolarization(G4ThreeVector& direction0); // Random Polarization
82 G4ThreeVector GetPerpendicularPolarization(const G4ThreeVector& direction0, const G4ThreeVector& polarization0) const;
83 G4ThreeVector SetPerpendicularVector(G4ThreeVector& a); // temporary
84 void SystemOfRefChange(G4ThreeVector& direction0, G4ThreeVector& direction1,
85 G4ThreeVector& polarization0);
86
87 // Gamma Conversion methods
88 G4double SetPhi(G4double);
89 G4double SetPsi(G4double, G4double); //
90
91 void SetTheta(G4double*, G4double*, G4double);
92
93 G4double Poli(G4double , G4double, G4double, G4double);
94 G4double Fln(G4double, G4double, G4double);
95
96 G4double Encu(G4double*, G4double*, G4double);
97
98 G4double Flor(G4double*, G4double);
99 G4double Glor(G4double*, G4double);
100
101 G4double Fdlor(G4double*, G4double);
102 G4double Fintlor(G4double*, G4double);
103 G4double Finvlor(G4double*, G4double,G4double);
104
105 G4double Ftan(G4double*, G4double);
106 G4double Fdtan(G4double*, G4double);
107 G4double Finttan(G4double*, G4double);
108 G4double Finvtan(G4double*, G4double, G4double);
109
110
111 G4ParticleChangeForGamma* fParticleChange;
112
113 static const G4int maxZ = 99;
114 static G4PhysicsFreeVector* data[100]; // 100 because Z range is 1-99
115
116 G4double lowEnergyLimit;
117 G4double smallEnergy;
118 G4double Psi, Phi;
119 G4int verboseLevel;
120 G4bool isInitialised;
121 };
122
123 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
124
125 #endif
126