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25 // 22 //
26 // 23 //
27 // ------------------------------------------- 24 // -------------------------------------------------------------------
28 // 25 //
29 // GEANT4 Class header file 26 // GEANT4 Class header file
30 // 27 //
31 // 28 //
32 // File name: G4MuPairProductionModel 29 // File name: G4MuPairProductionModel
33 // 30 //
34 // Author: Vladimir Ivanchenko on base 31 // Author: Vladimir Ivanchenko on base of Laszlo Urban code
35 // 32 //
36 // Creation date: 18.05.2002 33 // Creation date: 18.05.2002
37 // 34 //
38 // Modifications: 35 // Modifications:
39 // 36 //
40 // 23-12-02 Change interface in order to move 37 // 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 38 // 27-01-03 Make models region aware (V.Ivanchenko)
42 // 13-02-03 Add name (V.Ivanchenko) 39 // 13-02-03 Add name (V.Ivanchenko)
43 // 10-02-04 Update parameterisation using R.Ko << 40 //
44 // 10-02-04 Add lowestKinEnergy (V.Ivanchenko) << 41
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 // 42 //
50 // Class Description: 43 // Class Description:
51 // 44 //
52 // Implementation of e+e- pair production by m 45 // 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 // 46 //
>> 47
56 // ------------------------------------------- 48 // -------------------------------------------------------------------
57 // 49 //
58 50
59 #ifndef G4MuPairProductionModel_h 51 #ifndef G4MuPairProductionModel_h
60 #define G4MuPairProductionModel_h 1 52 #define G4MuPairProductionModel_h 1
61 53
62 #include "G4VEmModel.hh" 54 #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 55
72 class G4MuPairProductionModel : public G4VEmMo 56 class G4MuPairProductionModel : public G4VEmModel
73 { 57 {
>> 58
74 public: 59 public:
75 60
76 explicit G4MuPairProductionModel(const G4Par << 61 G4MuPairProductionModel(const G4ParticleDefinition* p = 0, const G4String& nam = "MuPairProd");
77 const G4Str << 62
>> 63 ~G4MuPairProductionModel();
>> 64
>> 65 void Initialise(const G4ParticleDefinition*, const G4DataVector&);
>> 66
>> 67 G4double HighEnergyLimit(const G4ParticleDefinition* p);
78 68
79 ~G4MuPairProductionModel() override = defaul << 69 G4double LowEnergyLimit(const G4ParticleDefinition* p);
80 70
81 void Initialise(const G4ParticleDefinition*, << 71 void SetHighEnergyLimit(G4double e) {highKinEnergy = e;};
82 72
83 void InitialiseLocal(const G4ParticleDefinit << 73 void SetLowEnergyLimit(G4double e) {lowKinEnergy = e;};
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 74
>> 75 G4double MinEnergyCut(const G4ParticleDefinition*,
>> 76 const G4MaterialCutsCouple*);
>> 77
>> 78 G4bool IsInCharge(const G4ParticleDefinition*);
>> 79
>> 80 G4double ComputeDEDX(const G4Material*,
>> 81 const G4ParticleDefinition*,
>> 82 G4double kineticEnergy,
>> 83 G4double cutEnergy);
>> 84
>> 85 G4double CrossSection(const G4Material*,
>> 86 const G4ParticleDefinition*,
>> 87 G4double kineticEnergy,
>> 88 G4double cutEnergy,
>> 89 G4double maxEnergy);
>> 90
>> 91 G4DynamicParticle* SampleSecondary(
>> 92 const G4MaterialCutsCouple*,
>> 93 const G4DynamicParticle*,
>> 94 G4double tmin,
>> 95 G4double maxEnergy);
>> 96
>> 97 G4std::vector<G4DynamicParticle*>* SampleSecondaries(
>> 98 const G4MaterialCutsCouple*,
>> 99 const G4DynamicParticle*,
>> 100 G4double tmin,
>> 101 G4double maxEnergy);
>> 102
>> 103 virtual G4double MaxSecondaryEnergy(
>> 104 const G4DynamicParticle* dynParticle);
120 protected: 105 protected:
121 106
122 G4double ComputMuPairLoss(G4double Z, G4doub << 107 virtual G4double MaxSecondaryEnergy(const G4ParticleDefinition*,
123 G4double tmax); << 108 G4double kineticEnergy);
>> 109
>> 110 private:
>> 111
>> 112 G4double ComputMuPairLoss(G4double Z, G4double tkin, G4double cut);
124 113
125 G4double ComputeMicroscopicCrossSection(G4do 114 G4double ComputeMicroscopicCrossSection(G4double tkin,
126 G4do 115 G4double Z,
>> 116 G4double A,
127 G4do 117 G4double cut);
128 118
129 G4double FindScaledEnergy(G4int Z, G4double << 119 G4double ComputeDMicroscopicCrossSection(G4double tkin,
130 G4double yymin, G4double yymax); << 120 G4double Z,
>> 121 G4double pairEnergy);
>> 122
>> 123 G4double ComputeDDMicroscopicCrossSection(G4double tkin,
>> 124 G4double Z,
>> 125 G4double pairEnergy,
>> 126 G4double asymmetry);
131 127
132 inline G4double MaxSecondaryEnergyForElement << 128 G4DataVector* ComputePartialSumSigma(const G4Material* material,
133 G4double Z); << 129 G4double tkin, G4double cut);
134 <<
135 void MakeSamplingTables(); <<
136 130
137 void StoreTables() const; << 131 const G4Element* SelectRandomAtom(const G4MaterialCutsCouple* couple) const;
138 132
139 G4bool RetrieveTables(); << 133 void MakeSamplingTables();
140 <<
141 virtual void DataCorrupted(G4int Z, G4double <<
142 134
143 G4ParticleChangeForLoss* fParticleChange = n << 135 // hide assignment operator
144 const G4ParticleDefinition* particle = nullp << 136 G4MuPairProductionModel & operator=(const G4MuPairProductionModel &right);
145 G4NistManager* nist = nullptr; << 137 G4MuPairProductionModel(const G4MuPairProductionModel&);
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; <<
153 138
154 G4double minPairEnergy; 139 G4double minPairEnergy;
155 G4double lowestKinEnergy; << 140 G4double highKinEnergy;
>> 141 G4double lowKinEnergy;
156 142
157 G4double emin; << 143 // tables for sampling
158 G4double emax; << 144 G4int nzdat,ntdat,NBIN;
159 G4double ymin = -5.0; << 145 static G4double zdat[5],adat[5],tdat[8];
160 G4double dy = 0.005; << 146 G4double ya[1001],proba[5][8][1001];
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]; <<
175 147
176 private: << 148 G4std::vector<G4DataVector*> partialSumSigma;
177 << 149 G4bool samplingTablesAreFilled;
178 G4ParticleDefinition* theElectron; <<
179 G4ParticleDefinition* thePositron; <<
180 G4String dataName{""}; <<
181 }; 150 };
182 151
183 //....oooOO0OOooo........oooOO0OOooo........oo << 152 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
184 <<
185 inline void G4MuPairProductionModel::SetLowest <<
186 { <<
187 lowestKinEnergy = e; <<
188 } <<
189 <<
190 //....oooOO0OOooo........oooOO0OOooo........oo <<
191 153
192 inline << 154 inline
193 void G4MuPairProductionModel::SetParticle(cons << 155 G4double G4MuPairProductionModel::MaxSecondaryEnergy(
>> 156 const G4DynamicParticle* dynParticle)
194 { 157 {
195 if(nullptr == particle) { << 158 return dynParticle->GetKineticEnergy();
196 particle = p; << 159 }
197 particleMass = particle->GetPDGMass(); <<
198 } <<
199 } <<
200 160
201 //....oooOO0OOooo........oooOO0OOooo........oo << 161 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
202 162
203 inline G4double << 163 inline
204 G4MuPairProductionModel::MaxSecondaryEnergyFor << 164 G4double G4MuPairProductionModel::MaxSecondaryEnergy(
205 G4double ZZ) << 165 const G4ParticleDefinition*,
>> 166 G4double kineticEnergy)
206 { 167 {
207 G4int Z = G4lrint(ZZ); << 168 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 } 169 }
216 170
217 //....oooOO0OOooo........oooOO0OOooo........oo << 171 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
218 172
219 #endif 173 #endif
220 174