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25 // 22 //
>> 23 // $Id: G4MuPairProductionModel.hh,v 1.9 2003/06/16 17:01:43 gunter Exp $
>> 24 // GEANT4 tag $Name: geant4-05-02-patch-01 $
26 // 25 //
27 // ------------------------------------------- 26 // -------------------------------------------------------------------
28 // 27 //
29 // GEANT4 Class header file 28 // GEANT4 Class header file
30 // 29 //
31 // 30 //
32 // File name: G4MuPairProductionModel 31 // File name: G4MuPairProductionModel
33 // 32 //
34 // Author: Vladimir Ivanchenko on base 33 // Author: Vladimir Ivanchenko on base of Laszlo Urban code
35 // 34 //
36 // Creation date: 18.05.2002 35 // Creation date: 18.05.2002
37 // 36 //
38 // Modifications: 37 // Modifications:
39 // 38 //
40 // 23-12-02 Change interface in order to move 39 // 23-12-02 Change interface in order to move to cut per region (V.Ivanchenko)
41 // 27-01-03 Make models region aware (V.Ivanch 40 // 27-01-03 Make models region aware (V.Ivanchenko)
42 // 13-02-03 Add name (V.Ivanchenko) 41 // 13-02-03 Add name (V.Ivanchenko)
43 // 10-02-04 Update parameterisation using R.Ko << 42 //
44 // 10-02-04 Add lowestKinEnergy (V.Ivanchenko) << 43
45 // 13-02-06 Add ComputeCrossSectionPerAtom (mm <<
46 // 12-05-06 Add parameter to SelectRandomAtom <<
47 // 11-10-07 Add ignoreCut flag (V.Ivanchenko) <<
48 // 28-02-08 Reorganized protected methods and <<
49 // 44 //
50 // Class Description: 45 // Class Description:
51 // 46 //
52 // Implementation of e+e- pair production by m 47 // Implementation of e+e- pair production by muons
53 // A.G. Bogdanov et al., IEEE Trans. Nuc. Sci. <<
54 // Base class for all pair production models f <<
55 // 48 //
>> 49
56 // ------------------------------------------- 50 // -------------------------------------------------------------------
57 // 51 //
58 52
59 #ifndef G4MuPairProductionModel_h 53 #ifndef G4MuPairProductionModel_h
60 #define G4MuPairProductionModel_h 1 54 #define G4MuPairProductionModel_h 1
61 55
62 #include "G4VEmModel.hh" 56 #include "G4VEmModel.hh"
63 #include "G4NistManager.hh" <<
64 #include "G4ElementData.hh" <<
65 #include "G4Physics2DVector.hh" <<
66 #include <vector> <<
67 <<
68 class G4Element; <<
69 class G4ParticleChangeForLoss; <<
70 class G4ParticleChangeForGamma; <<
71 57
72 class G4MuPairProductionModel : public G4VEmMo 58 class G4MuPairProductionModel : public G4VEmModel
73 { 59 {
>> 60
74 public: 61 public:
75 62
76 explicit G4MuPairProductionModel(const G4Par << 63 G4MuPairProductionModel(const G4ParticleDefinition* p = 0, const G4String& nam = "MuPairProd");
77 const G4Str <<
78 64
79 ~G4MuPairProductionModel() override = defaul << 65 ~G4MuPairProductionModel();
80 66
81 void Initialise(const G4ParticleDefinition*, << 67 void Initialise(const G4ParticleDefinition*, const G4DataVector&);
82 68
83 void InitialiseLocal(const G4ParticleDefinit << 69 G4double HighEnergyLimit(const G4ParticleDefinition* p);
84 G4VEmModel* masterModel <<
85 <<
86 G4double ComputeCrossSectionPerAtom(const G4 <<
87 G4double kineticEnergy, <<
88 G4double Z, G4double A, <<
89 G4double cutEnergy, <<
90 G4double maxEnergy) override; <<
91 <<
92 G4double ComputeDEDXPerVolume(const G4Materi <<
93 const G4Partic <<
94 G4double kinet <<
95 G4double cutEn <<
96 <<
97 void SampleSecondaries(std::vector<G4Dynamic <<
98 const G4MaterialCutsCouple*, <<
99 const G4DynamicParticle*, <<
100 G4double tmin, <<
101 G4double maxEnergy) override; <<
102 <<
103 G4double MinPrimaryEnergy(const G4Material*, <<
104 const G4ParticleDe <<
105 G4double) override <<
106 <<
107 virtual G4double <<
108 ComputeDMicroscopicCrossSection(G4double tki <<
109 G4double pairEnergy); <<
110 <<
111 inline void SetLowestKineticEnergy(G4double <<
112 <<
113 inline void SetParticle(const G4ParticleDefi <<
114 <<
115 // hide assignment operator and copy constru <<
116 G4MuPairProductionModel & operator= <<
117 (const G4MuPairProductionModel &right) = del <<
118 G4MuPairProductionModel(const G4MuPairProdu <<
119 70
120 protected: << 71 G4double LowEnergyLimit(const G4ParticleDefinition* p);
121 72
122 G4double ComputMuPairLoss(G4double Z, G4doub << 73 void SetHighEnergyLimit(G4double e) {highKinEnergy = e;};
123 G4double tmax); <<
124 74
125 G4double ComputeMicroscopicCrossSection(G4do << 75 void SetLowEnergyLimit(G4double e) {lowKinEnergy = e;};
126 G4do <<
127 G4do <<
128 76
129 G4double FindScaledEnergy(G4int Z, G4double << 77 G4double MinEnergyCut(const G4ParticleDefinition*,
130 G4double yymin, G4double yymax); << 78 const G4MaterialCutsCouple*);
131 79
132 inline G4double MaxSecondaryEnergyForElement << 80 G4bool IsInCharge(const G4ParticleDefinition*);
133 G4double Z); <<
134 81
135 void MakeSamplingTables(); << 82 G4double ComputeDEDX(const G4Material*,
>> 83 const G4ParticleDefinition*,
>> 84 G4double kineticEnergy,
>> 85 G4double cutEnergy);
136 86
137 void StoreTables() const; << 87 G4double CrossSection(const G4Material*,
>> 88 const G4ParticleDefinition*,
>> 89 G4double kineticEnergy,
>> 90 G4double cutEnergy,
>> 91 G4double maxEnergy);
138 92
139 G4bool RetrieveTables(); << 93 G4DynamicParticle* SampleSecondary(
>> 94 const G4MaterialCutsCouple*,
>> 95 const G4DynamicParticle*,
>> 96 G4double tmin,
>> 97 G4double maxEnergy);
140 98
141 virtual void DataCorrupted(G4int Z, G4double << 99 std::vector<G4DynamicParticle*>* SampleSecondaries(
>> 100 const G4MaterialCutsCouple*,
>> 101 const G4DynamicParticle*,
>> 102 G4double tmin,
>> 103 G4double maxEnergy);
142 104
143 G4ParticleChangeForLoss* fParticleChange = n << 105 virtual G4double MaxSecondaryEnergy(
144 const G4ParticleDefinition* particle = nullp << 106 const G4DynamicParticle* dynParticle);
145 G4NistManager* nist = nullptr; <<
146 <<
147 G4double factorForCross; <<
148 G4double sqrte; <<
149 G4double particleMass = 0.0; <<
150 G4double z13 = 0.0; <<
151 G4double z23 = 0.0; <<
152 G4double lnZ = 0.0; <<
153 107
154 G4double minPairEnergy; << 108 protected:
155 G4double lowestKinEnergy; <<
156 109
157 G4double emin; << 110 virtual G4double MaxSecondaryEnergy(const G4ParticleDefinition*,
158 G4double emax; << 111 G4double kineticEnergy);
159 G4double ymin = -5.0; <<
160 G4double dy = 0.005; <<
161 <<
162 G4int currentZ = 0; <<
163 G4int nYBinPerDecade = 4; <<
164 std::size_t nbiny = 1000; <<
165 std::size_t nbine = 0; <<
166 <<
167 G4bool fTableToFile = false; <<
168 <<
169 // static members <<
170 static const G4int NZDATPAIR = 5; <<
171 static const G4int NINTPAIR = 8; <<
172 static const G4int ZDATPAIR[NZDATPAIR]; <<
173 static const G4double xgi[NINTPAIR]; <<
174 static const G4double wgi[NINTPAIR]; <<
175 112
176 private: 113 private:
177 114
178 G4ParticleDefinition* theElectron; << 115 G4double ComputMuPairLoss(G4double Z, G4double tkin, G4double cut);
179 G4ParticleDefinition* thePositron; << 116
180 G4String dataName{""}; << 117 G4double ComputeMicroscopicCrossSection(G4double tkin,
181 }; << 118 G4double Z,
>> 119 G4double cut);
182 120
183 //....oooOO0OOooo........oooOO0OOooo........oo << 121 G4double ComputeDMicroscopicCrossSection(G4double tkin,
>> 122 G4double Z,
>> 123 G4double pairEnergy);
>> 124
>> 125 G4double ComputeDDMicroscopicCrossSection(G4double tkin,
>> 126 G4double Z,
>> 127 G4double pairEnergy,
>> 128 G4double asymmetry);
184 129
185 inline void G4MuPairProductionModel::SetLowest << 130 G4DataVector* ComputePartialSumSigma(const G4Material* material,
186 { << 131 G4double tkin, G4double cut);
187 lowestKinEnergy = e; << 132
188 } << 133 const G4Element* SelectRandomAtom(const G4MaterialCutsCouple* couple) const;
>> 134
>> 135 void MakeSamplingTables();
189 136
190 //....oooOO0OOooo........oooOO0OOooo........oo << 137 // hide assignment operator
>> 138 G4MuPairProductionModel & operator=(const G4MuPairProductionModel &right);
>> 139 G4MuPairProductionModel(const G4MuPairProductionModel&);
191 140
192 inline << 141 G4double minPairEnergy;
193 void G4MuPairProductionModel::SetParticle(cons << 142 G4double highKinEnergy;
>> 143 G4double lowKinEnergy;
>> 144
>> 145 // tables for sampling
>> 146 G4int nzdat,ntdat,NBIN;
>> 147 static G4double zdat[5],adat[5],tdat[8];
>> 148 G4double ya[1001],proba[5][8][1001];
>> 149
>> 150 std::vector<G4DataVector*> partialSumSigma;
>> 151 G4bool samplingTablesAreFilled;
>> 152 };
>> 153
>> 154 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 155
>> 156 inline
>> 157 G4double G4MuPairProductionModel::MaxSecondaryEnergy(
>> 158 const G4DynamicParticle* dynParticle)
194 { 159 {
195 if(nullptr == particle) { << 160 return dynParticle->GetKineticEnergy();
196 particle = p; << 161 }
197 particleMass = particle->GetPDGMass(); <<
198 } <<
199 } <<
200 162
201 //....oooOO0OOooo........oooOO0OOooo........oo << 163 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
202 164
203 inline G4double << 165 inline
204 G4MuPairProductionModel::MaxSecondaryEnergyFor << 166 G4double G4MuPairProductionModel::MaxSecondaryEnergy(
205 G4double ZZ) << 167 const G4ParticleDefinition*,
>> 168 G4double kineticEnergy)
206 { 169 {
207 G4int Z = G4lrint(ZZ); << 170 return kineticEnergy;
208 if(Z != currentZ) { <<
209 currentZ = Z; <<
210 z13 = nist->GetZ13(Z); <<
211 z23 = z13*z13; <<
212 lnZ = nist->GetLOGZ(Z); <<
213 } <<
214 return kineticEnergy + particleMass*(1.0 - 0 <<
215 } 171 }
216 172
217 //....oooOO0OOooo........oooOO0OOooo........oo << 173 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
218 174
219 #endif 175 #endif
220 176