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26 ///////////////////////////////////////////////////////////////////////////
27 //
28 // base class for 'fast' parametrisation model describing X-ray transition
29 // created in some G4Envelope. Angular distribuiton is very rough !!! (see DoIt
30 // method
31 //
32 // History:
33 // 06.10.05 V. Grichine first step to discrete process
34 // 15.01.02 V. Grichine first version
35 // 28.07.05, P.Gumplinger add G4ProcessType to constructor
36 // 28.09.07, V.Ivanchenko general cleanup without change of algorithms
37 // 19.09.21, V. Grichine, set/get functions for angle anf energy ranges and number of bins
38
39 #ifndef G4VXTRenergyLoss_h
40 #define G4VXTRenergyLoss_h 1
41
42 #include "globals.hh"
43 #include "G4Gamma.hh"
44 #include "G4LogicalVolume.hh"
45 #include "G4Material.hh"
46 #include "G4ParticleChange.hh"
47 #include "G4PhysicsTable.hh"
48 #include "G4Step.hh"
49 #include "G4Track.hh"
50 #include "G4VDiscreteProcess.hh"
51
52 class G4SandiaTable;
53 class G4VParticleChange;
54 class G4PhysicsFreeVector;
55 class G4PhysicsLinearVector;
56 class G4PhysicsLogVector;
57
58 class G4VXTRenergyLoss : public G4VDiscreteProcess
59 {
60 public:
61 explicit G4VXTRenergyLoss(G4LogicalVolume* anEnvelope, G4Material*,
62 G4Material*, G4double, G4double, G4int,
63 const G4String& processName = "XTRenergyLoss",
64 G4ProcessType type = fElectromagnetic);
65 virtual ~G4VXTRenergyLoss();
66
67 virtual void ProcessDescription(std::ostream&) const override;
68 virtual void DumpInfo() const override { ProcessDescription(G4cout); };
69
70 G4VXTRenergyLoss(G4VXTRenergyLoss&) = delete;
71 G4VXTRenergyLoss& operator=(const G4VXTRenergyLoss& right) = delete;
72
73 // Virtual methods to be implemented in inherited particular TR radiators
74 virtual G4double GetStackFactor(G4double energy, G4double gamma,
75 G4double varAngle);
76
77 virtual G4bool IsApplicable(const G4ParticleDefinition&) override;
78
79 virtual G4VParticleChange* PostStepDoIt(const G4Track& aTrack,
80 const G4Step& aStep) override;
81
82 virtual G4double GetMeanFreePath(const G4Track& aTrack,
83 G4double previousStepSize,
84 G4ForceCondition* condition) override;
85
86 virtual void BuildPhysicsTable(const G4ParticleDefinition&) override;
87 void BuildEnergyTable();
88 void BuildAngleForEnergyBank();
89
90 void BuildTable(){};
91 void BuildAngleTable();
92 void BuildGlobalAngleTable();
93
94 G4complex OneInterfaceXTRdEdx(G4double energy, G4double gamma,
95 G4double varAngle);
96
97 G4double SpectralAngleXTRdEdx(G4double varAngle);
98
99 virtual G4double SpectralXTRdEdx(G4double energy);
100
101 G4double AngleSpectralXTRdEdx(G4double energy);
102
103 G4double AngleXTRdEdx(G4double varAngle);
104
105 G4double OneBoundaryXTRNdensity(G4double energy, G4double gamma,
106 G4double varAngle) const;
107
108 // for photon energy distribution tables
109 G4double XTRNSpectralAngleDensity(G4double varAngle);
110 G4double XTRNSpectralDensity(G4double energy);
111
112 // for photon angle distribution tables
113 G4double XTRNAngleSpectralDensity(G4double energy);
114 G4double XTRNAngleDensity(G4double varAngle);
115
116 void GetNumberOfPhotons();
117
118 // Auxiliary functions for plate/gas material parameters
119 G4double GetPlateFormationZone(G4double, G4double, G4double);
120 G4complex GetPlateComplexFZ(G4double, G4double, G4double);
121 void ComputePlatePhotoAbsCof();
122 G4double GetPlateLinearPhotoAbs(G4double);
123 void GetPlateZmuProduct();
124 G4double GetPlateZmuProduct(G4double, G4double, G4double);
125
126 G4double GetGasFormationZone(G4double, G4double, G4double);
127 G4complex GetGasComplexFZ(G4double, G4double, G4double);
128 void ComputeGasPhotoAbsCof();
129 G4double GetGasLinearPhotoAbs(G4double);
130 void GetGasZmuProduct();
131 G4double GetGasZmuProduct(G4double, G4double, G4double);
132
133 G4double GetPlateCompton(G4double);
134 G4double GetGasCompton(G4double);
135 G4double GetComptonPerAtom(G4double, G4double);
136
137 G4double GetXTRrandomEnergy(G4double scaledTkin, G4int iTkin);
138 G4double GetXTRenergy(G4int iPlace, G4double position, G4int iTransfer);
139
140 G4double GetRandomAngle(G4double energyXTR, G4int iTkin);
141 G4double GetAngleXTR(G4int iTR, G4double position, G4int iAngle);
142
143 // set/get methods for class fields
144
145 void SetGamma(G4double gamma) { fGamma = gamma; };
146 G4double GetGamma() { return fGamma; };
147 void SetEnergy(G4double energy) { fEnergy = energy; };
148 G4double GetEnergy() { return fEnergy; };
149 void SetVarAngle(G4double varAngle) { fVarAngle = varAngle; };
150 G4double GetVarAngle() { return fVarAngle; };
151 void SetCompton(G4bool pC) { fCompton = pC; };
152 G4bool GetCompton() { return fCompton; };
153
154 G4int GetKrange(){ return fKrange;};
155 void SetKrange( G4int kk ){ fKrange = kk;};
156
157
158 void SetAlphaGas(G4double ag){ fAlphaGas = ag;};
159 G4double GetAlphaGas() { return fAlphaGas; };
160 void SetAlphaPlate(G4double ap){ fAlphaPlate = ap;};
161 G4double GetAlphaPlate() { return fAlphaPlate; };
162
163 void SetTheMinEnergyTR(G4double minetr){ fTheMinEnergyTR = minetr;};
164 G4double GetTheMinEnergyTR() { return fTheMinEnergyTR; };
165 void SetTheMaxEnergyTR(G4double maxetr){ fTheMaxEnergyTR = maxetr;};
166 G4double GetTheMaxEnergyTR() { return fTheMaxEnergyTR; };
167
168 void SetMinEnergyTR(G4double minetr){ fMinEnergyTR = minetr;};
169 G4double GetMinEnergyTR() { return fMinEnergyTR; };
170 void SetMaxEnergyTR(G4double maxetr){ fMaxEnergyTR = maxetr;};
171 G4double GetMaxEnergyTR() { return fMaxEnergyTR; };
172
173 void SetTheMinAngle(G4double minang){ fTheMinAngle = minang;};
174 G4double GetTheMinAngle() { return fTheMinAngle; };
175 void SetTheMaxAngle(G4double maxang){ fTheMaxAngle = maxang;};
176 G4double GetTheMaxAngle() { return fTheMaxAngle; };
177
178 void SetMinThetaTR(G4double minatr){ fMinThetaTR = minatr;};
179 G4double GetMinThetaTR() { return fMinThetaTR; };
180 void SetMaxThetaTR(G4double maxatr){ fMaxThetaTR = maxatr;};
181 G4double GetMaxThetaTR() { return fMaxThetaTR; };
182
183 // modes of XTR angle distribution
184
185 void SetFastAngle(G4bool fatr){ fFastAngle = fatr;};
186 G4bool GetFastAngle() { return fFastAngle; };
187 void SetAngleRadDistr(G4bool fatr){ fAngleRadDistr = fatr;};
188 G4bool GetAngleRadDistr() { return fAngleRadDistr; };
189
190
191
192
193 G4PhysicsLogVector* GetProtonVector() { return fProtonEnergyVector; };
194 G4int GetTotBin() { return fTotBin; };
195 G4PhysicsFreeVector* GetAngleVector(G4double energy, G4int n);
196
197 protected:
198 // min TR energy
199 G4double fTheMinEnergyTR;
200 // max TR energy
201 G4double fTheMaxEnergyTR;
202 G4double fTheMinAngle; // min theta of TR quanta
203 G4double fTheMaxAngle; // 1.e-4; // max theta of TR quanta
204
205 // static const members
206
207 // min Tkin of proton in tables
208 static constexpr G4double fMinProtonTkin = 100. * CLHEP::GeV;
209 // max Tkin of proton in tables
210 static constexpr G4double fMaxProtonTkin = 100. * CLHEP::TeV;
211 // physical constants for plasma energy
212 static constexpr G4double fPlasmaCof =
213 4. * CLHEP::pi * CLHEP::fine_structure_const * CLHEP::hbarc * CLHEP::hbarc *
214 CLHEP::hbarc / CLHEP::electron_mass_c2;
215 static constexpr G4double fCofTR = CLHEP::fine_structure_const / CLHEP::pi;
216
217 G4int fTotBin; // number of bins in log-gamma scale
218 G4int fBinTR; // number of bins in TR energy-angle vectors
219 G4int fKrange;
220 G4ParticleDefinition* fPtrGamma; // pointer to TR photon
221
222 G4double* fGammaCutInKineticEnergy; // TR photon cut in energy array
223 G4LogicalVolume* fEnvelope;
224 G4PhysicsTable* fAngleDistrTable;
225 G4PhysicsTable* fEnergyDistrTable;
226 G4PhysicsTable* fAngleForEnergyTable;
227 G4PhysicsLogVector* fProtonEnergyVector;
228 G4PhysicsLogVector* fXTREnergyVector;
229 G4SandiaTable* fPlatePhotoAbsCof;
230 G4SandiaTable* fGasPhotoAbsCof;
231
232 G4ParticleChange fParticleChange;
233 std::vector<G4PhysicsTable*> fAngleBank;
234
235 G4double fGammaTkinCut; // Tkin cut of TR photon in current mat.
236 G4double fMinEnergyTR; // min TR energy in material
237 G4double fMaxEnergyTR; // max TR energy in material
238 G4double fMinThetaTR, fMaxThetaTR; // min-max theta of TR quanta
239 G4double fTotalDist;
240 G4double fPlateThick;
241 G4double fGasThick;
242 G4double fAlphaPlate;
243 G4double fAlphaGas;
244 G4double fGamma; // current Lorentz factor
245 G4double fEnergy; // energy and
246 G4double fVarAngle; // angle squared!
247 G4double fLambda;
248 G4double fSigma1;
249 G4double fSigma2; // plasma energy Sq of matter1/2
250
251 G4int fMatIndex1;
252 G4int fMatIndex2;
253 G4int fPlateNumber;
254
255 G4bool fExitFlux;
256 G4bool fFastAngle, fAngleRadDistr;
257 G4bool fCompton;
258
259 G4int secID = -1; // creator modelID
260 };
261
262 #endif
263