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25 //
26 // ------------------------------------------------------------
27 // GEANT 4 class header file
28 //
29 // History:
30 // 21-5-98 1 version , V. Grichine
31 // 28-05-01, V.Ivanchenko minor changes to provide ANSI -wall compilation
32 // 19-05-06, V.Ivanchenko rename from G4SynchrotronRadiation
33 //
34 // ------------------------------------------------------------
35
36 #ifndef G4SynchrotronRadiationInMat_h
37 #define G4SynchrotronRadiationInMat_h 1
38
39 #include "globals.hh"
40 #include "G4Electron.hh"
41 #include "G4Gamma.hh"
42 #include "G4PhysicsLogVector.hh"
43 #include "G4PhysicsTable.hh"
44 #include "G4Positron.hh"
45 #include "G4Step.hh"
46 #include "G4ThreeVector.hh"
47 #include "G4Track.hh"
48 #include "G4TransportationManager.hh"
49 #include "G4VDiscreteProcess.hh"
50 #include "G4VParticleChange.hh"
51
52 class G4ParticleDefinition;
53 class G4PropagatorInField;
54
55 class G4SynchrotronRadiationInMat : public G4VDiscreteProcess
56 {
57 public:
58 explicit G4SynchrotronRadiationInMat(
59 const G4String& processName = "SynchrotronRadiation",
60 G4ProcessType type = fElectromagnetic);
61
62 ~G4SynchrotronRadiationInMat();
63
64 G4SynchrotronRadiationInMat& operator=(
65 const G4SynchrotronRadiationInMat& right) = delete;
66 G4SynchrotronRadiationInMat(const G4SynchrotronRadiationInMat&) = delete;
67
68 G4double GetMeanFreePath(const G4Track& track, G4double previousStepSize,
69 G4ForceCondition* condition) override;
70
71 G4VParticleChange* PostStepDoIt(const G4Track& track,
72 const G4Step& Step) override;
73
74 G4double GetPhotonEnergy(const G4Track& trackData, const G4Step& stepData);
75
76 G4double GetRandomEnergySR(G4double, G4double);
77
78 G4double GetProbSpectrumSRforInt(G4double);
79 G4double GetIntProbSR(G4double);
80
81 G4double GetProbSpectrumSRforEnergy(G4double);
82 G4double GetEnergyProbSR(G4double);
83
84 G4double GetIntegrandForAngleK(G4double);
85 G4double GetAngleK(G4double);
86 G4double GetAngleNumberAtGammaKsi(G4double);
87
88 G4bool IsApplicable(const G4ParticleDefinition&) override;
89
90 static G4double GetLambdaConst();
91 static G4double GetEnergyConst();
92
93 void SetRootNumber(G4int rn) { fRootNumber = rn; };
94 void SetVerboseLevel(G4int v) { fVerboseLevel = v; };
95 void SetKsi(G4double ksi) { fKsi = ksi; };
96 void SetEta(G4double eta) { fEta = eta; };
97 void SetPsiGamma(G4double psg) { fPsiGamma = psg; };
98 void SetOrderAngleK(G4double ord)
99 {
100 fOrderAngleK = ord;
101 }; // should be 1/3 or 2/3
102
103 private:
104 // Constant for calculation of mean free path
105 // sqrt(3.) = 1.73...
106 static constexpr G4double fLambdaConst =
107 1.73205080756887729352 * CLHEP::electron_mass_c2 /
108 (2.5 * CLHEP::fine_structure_const * CLHEP::eplus * ::CLHEP::c_light);
109
110 // Constant for calculation of characterictic energy
111 static constexpr G4double fEnergyConst =
112 1.5 * CLHEP::c_light * CLHEP::c_light * CLHEP::eplus * CLHEP::hbar_Planck /
113 CLHEP::electron_mass_c2;
114
115 // Array of integral probability of synchrotron photons:
116 // the corresponding energy = 0.0001*i*i*(characteristic energy)
117 static const G4double fIntegralProbabilityOfSR[200];
118
119 const G4ParticleDefinition* theGamma;
120 const G4ParticleDefinition* theElectron;
121 const G4ParticleDefinition* thePositron;
122
123 G4PropagatorInField* fFieldPropagator;
124
125 const G4double
126 LowestKineticEnergy; // low energy limit of the cross-section formula
127
128 G4double CutInRange;
129 G4double GammaCutInKineticEnergyNow;
130 G4double ElectronCutInKineticEnergyNow;
131 G4double PositronCutInKineticEnergyNow;
132 G4double ParticleCutInKineticEnergyNow;
133 G4double fAlpha;
134 G4double fKsi; // omega/omega_c
135 G4double fPsiGamma; // Psi-angle*gamma
136 G4double fEta; //
137 G4double fOrderAngleK; // 1/3 or 2/3
138
139 G4int fRootNumber;
140 G4int fVerboseLevel;
141
142 G4int secID = -1; // creator modelID
143 };
144
145 #endif // end of G4SynchrotronRadiationInMat.hh
146