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25 //
26 // G4ForwardXrayTR
27 //
28 // Class for description
29 //
30 // Class for forward X-ray transition radiation generated
31 // by relativistic charged particle crossed interface between material 1
32 // and material 2 (1 -> 2)
33
34 // History:
35 // 22.09.97, V. Grichine (Vladimir.Grichine@cern.ch)
36 // 26.01.00, V.Grichine, new constructor and protected DM for fast sim. models
37 // 10.03.03, V.Ivanchenko migrade to "cut per region"
38 // 03.06.03, V.Ivanchenko fix compilation warnings
39
40 #ifndef G4FORWARDXRAYTR_H
41 #define G4FORWARDXRAYTR_H
42
43 #include "globals.hh"
44 #include "G4Track.hh"
45 #include "G4TransitionRadiation.hh"
46 #include "G4VParticleChange.hh"
47
48 class G4ParticleDefinition;
49 class G4PhysicsTable;
50 class G4PhysicsLogVector;
51
52 class G4ForwardXrayTR : public G4TransitionRadiation
53 {
54 public:
55 explicit G4ForwardXrayTR(const G4String& matName1, const G4String& matName2,
56 const G4String& processName = "XrayTR");
57
58 explicit G4ForwardXrayTR(const G4String& processName = "XrayTR");
59
60 ~G4ForwardXrayTR();
61
62 G4ForwardXrayTR(const G4ForwardXrayTR& right) = delete;
63 G4ForwardXrayTR& operator=(const G4ForwardXrayTR& right) = delete;
64
65 /////////////////////// Methods /////////////////////////////////
66
67 void ProcessDescription(std::ostream&) const override;
68 void DumpInfo() const override { ProcessDescription(G4cout); };
69
70 void BuildXrayTRtables();
71
72 G4double GetMeanFreePath(const G4Track&, G4double,
73 G4ForceCondition* condition) override;
74
75 G4VParticleChange* PostStepDoIt(const G4Track& aTrack,
76 const G4Step& aStep) override;
77
78 G4double GetEnergyTR(G4int iMat, G4int jMat, G4int iTkin) const;
79
80 G4double GetThetaTR(G4int iMat, G4int jMat, G4int iTkin) const;
81
82 ///////////////////// Angle distribution /////////////////////////////
83
84 G4double SpectralAngleTRdensity(G4double energy,
85 G4double varAngle) const override;
86
87 G4double AngleDensity(G4double energy, G4double varAngle) const;
88
89 G4double EnergyInterval(G4double energy1, G4double energy2,
90 G4double varAngle) const;
91
92 G4double AngleSum(G4double varAngle1, G4double varAngle2) const;
93
94 ///////////////////////// Energy distribution ///////////////////////////////
95
96 G4double SpectralDensity(G4double energy, G4double x) const;
97
98 G4double AngleInterval(G4double energy, G4double varAngle1,
99 G4double varAngle2) const;
100
101 G4double EnergySum(G4double energy1, G4double energy2) const;
102
103 /////////////////////////// Access functions ////////////////////////////
104
105 G4PhysicsTable* GetAngleDistrTable();
106 G4PhysicsTable* GetEnergyDistrTable();
107
108 static G4int GetSympsonNumber();
109 static G4int GetBinTR();
110
111 static G4double GetMinProtonTkin();
112 static G4double GetMaxProtonTkin();
113 static G4int GetTotBin();
114
115 protected: // for access from X-ray TR fast simulation models
116 static constexpr G4double fTheMinEnergyTR =
117 1. * CLHEP::keV; // static min TR energy
118 static constexpr G4double fTheMaxEnergyTR =
119 100. * CLHEP::keV; // static max TR energy
120 static constexpr G4double fTheMaxAngle = 1.0e-3; // max theta of TR quanta
121 static constexpr G4double fTheMinAngle = 5.0e-6; // min theta of TR quanta
122 static constexpr G4double fMinProtonTkin =
123 100. * CLHEP::GeV; // min Tkin of proton in tables
124 static constexpr G4double fMaxProtonTkin =
125 100. * CLHEP::TeV; // max Tkin of proton in tables
126 static constexpr G4double fPlasmaCof =
127 4.0 * CLHEP::pi * CLHEP::fine_structure_const * CLHEP::hbarc *
128 CLHEP::hbarc * CLHEP::hbarc /
129 CLHEP::electron_mass_c2; // physical consts for plasma energy
130 static constexpr G4double fCofTR = CLHEP::fine_structure_const / CLHEP::pi;
131
132 static constexpr G4int fSympsonNumber =
133 100; // Accuracy of Sympson integration
134 static constexpr G4int fBinTR = 50; // number of bins in TR vectors
135 static constexpr G4int fTotBin = 50; // number of bins in log scale
136
137 const std::vector<G4double>* fGammaCutInKineticEnergy;
138 // TR photon cut in energy array
139
140 G4ParticleDefinition* fPtrGamma; // pointer to TR photon
141
142 G4PhysicsTable* fAngleDistrTable;
143 G4PhysicsTable* fEnergyDistrTable;
144
145 G4PhysicsLogVector* fProtonEnergyVector;
146
147 G4double fMinEnergyTR; // min TR energy in material
148 G4double fMaxEnergyTR; // max TR energy in material
149 G4double fMaxThetaTR; // max theta of TR quanta
150 G4double fGamma; // current Lorentz factor
151 G4double fGammaTkinCut; // Tkin cut of TR photon in current mat.
152 G4double fSigma1; // plasma energy Sq of matter1
153 G4double fSigma2; // plasma energy Sq of matter2
154
155 G4int secID = -1; // creator modelID
156 };
157
158 #endif // G4FORWARDXRAYTR_H
159