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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 <<
41 // 27-01-03 Make models region aware (V.Ivanch <<
42 // 13-02-03 Add name (V.Ivanchenko) <<
43 // 10-02-04 Update parameterisation using R.Ko <<
44 // 10-02-04 Add lowestKinEnergy (V.Ivanchenko) <<
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 // 37 //
50 // Class Description: << 38 // Class Description:
51 // 39 //
52 // Implementation of e+e- pair production by m 40 // Implementation of e+e- pair production by muons
53 // A.G. Bogdanov et al., IEEE Trans. Nuc. Sci. << 41 //
54 // Base class for all pair production models f << 42
55 // <<
56 // ------------------------------------------- 43 // -------------------------------------------------------------------
57 // 44 //
58 45
59 #ifndef G4MuPairProductionModel_h 46 #ifndef G4MuPairProductionModel_h
60 #define G4MuPairProductionModel_h 1 47 #define G4MuPairProductionModel_h 1
61 48
62 #include "G4VEmModel.hh" 49 #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 50
72 class G4MuPairProductionModel : public G4VEmMo 51 class G4MuPairProductionModel : public G4VEmModel
73 { 52 {
74 public: <<
75 53
76 explicit G4MuPairProductionModel(const G4Par << 54 public:
77 const G4Str <<
78 55
79 ~G4MuPairProductionModel() override = defaul << 56 G4MuPairProductionModel(const G4ParticleDefinition* p = 0);
80 57
81 void Initialise(const G4ParticleDefinition*, << 58 ~G4MuPairProductionModel();
82 59
83 void InitialiseLocal(const G4ParticleDefinit << 60 G4double HighEnergyLimit(const G4ParticleDefinition* p,
84 G4VEmModel* masterModel << 61 const G4Material*);
85 << 62
86 G4double ComputeCrossSectionPerAtom(const G4 << 63 G4double LowEnergyLimit(const G4ParticleDefinition* p,
87 G4double kineticEnergy, << 64 const G4Material*);
88 G4double Z, G4double A, << 65
89 G4double cutEnergy, << 66 void SetHighEnergyLimit(const G4Material*, G4double e) {highKinEnergy = e;};
90 G4double maxEnergy) override; << 67
91 << 68 void SetLowEnergyLimit(const G4Material*, G4double e) {lowKinEnergy = e;};
92 G4double ComputeDEDXPerVolume(const G4Materi << 69
93 const G4Partic << 70 G4double MinEnergyCut(const G4ParticleDefinition*,
94 G4double kinet << 71 const G4Material*);
95 G4double cutEn << 72
96 << 73 G4bool IsInCharge(const G4ParticleDefinition*,
97 void SampleSecondaries(std::vector<G4Dynamic << 74 const G4Material*);
98 const G4MaterialCutsCouple*, << 75
99 const G4DynamicParticle*, << 76 G4double ComputeDEDX(const G4Material*,
100 G4double tmin, << 77 const G4ParticleDefinition*,
101 G4double maxEnergy) override; << 78 G4double kineticEnergy,
102 << 79 G4double cutEnergy);
103 G4double MinPrimaryEnergy(const G4Material*, << 80
104 const G4ParticleDe << 81 G4double CrossSection(const G4Material*,
105 G4double) override << 82 const G4ParticleDefinition*,
106 << 83 G4double kineticEnergy,
107 virtual G4double << 84 G4double cutEnergy,
108 ComputeDMicroscopicCrossSection(G4double tki << 85 G4double maxEnergy);
109 G4double pairEnergy); << 86
110 << 87 G4std::vector<G4DynamicParticle*>* SampleSecondary(
111 inline void SetLowestKineticEnergy(G4double << 88 const G4Material*,
112 << 89 const G4DynamicParticle*,
113 inline void SetParticle(const G4ParticleDefi << 90 G4double tmin,
114 << 91 G4double maxEnergy);
115 // hide assignment operator and copy constru <<
116 G4MuPairProductionModel & operator= <<
117 (const G4MuPairProductionModel &right) = del <<
118 G4MuPairProductionModel(const G4MuPairProdu <<
119 92
>> 93 virtual G4double MaxSecondaryEnergy(
>> 94 const G4DynamicParticle* dynParticle);
120 protected: 95 protected:
121 96
122 G4double ComputMuPairLoss(G4double Z, G4doub << 97 virtual G4double MaxSecondaryEnergy(const G4ParticleDefinition*,
123 G4double tmax); << 98 G4double kineticEnergy);
>> 99
>> 100 private:
>> 101
>> 102 G4double ComputMuPairLoss(G4double Z, G4double tkin, G4double cut);
124 103
125 G4double ComputeMicroscopicCrossSection(G4do 104 G4double ComputeMicroscopicCrossSection(G4double tkin,
126 G4do 105 G4double Z,
>> 106 G4double A,
127 G4do 107 G4double cut);
128 108
129 G4double FindScaledEnergy(G4int Z, G4double << 109 G4double ComputeDMicroscopicCrossSection(G4double tkin,
130 G4double yymin, G4double yymax); << 110 G4double Z,
131 << 111 G4double pairEnergy);
132 inline G4double MaxSecondaryEnergyForElement << 112
133 G4double Z); << 113 G4double ComputeDDMicroscopicCrossSection(G4double tkin,
>> 114 G4double Z,
>> 115 G4double pairEnergy,
>> 116 G4double asymmetry);
134 117
135 void MakeSamplingTables(); << 118 void ComputePartialSumSigma(const G4Material* material, G4double tkin, G4double cut);
136 119
137 void StoreTables() const; << 120 const G4Element* SelectRandomAtom(const G4Material* material) const;
138 121
139 G4bool RetrieveTables(); << 122 void MakeSamplingTables();
140 <<
141 virtual void DataCorrupted(G4int Z, G4double <<
142 123
143 G4ParticleChangeForLoss* fParticleChange = n << 124 // hide assignment operator
144 const G4ParticleDefinition* particle = nullp << 125 G4MuPairProductionModel & operator=(const G4MuPairProductionModel &right);
145 G4NistManager* nist = nullptr; << 126 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; <<
153 127
154 G4double minPairEnergy; 128 G4double minPairEnergy;
155 G4double lowestKinEnergy; << 129 G4double highKinEnergy;
156 << 130 G4double lowKinEnergy;
157 G4double emin; << 131 G4double minThreshold;
158 G4double emax; << 132
159 G4double ymin = -5.0; << 133 // tables for sampling
160 G4double dy = 0.005; << 134 G4int nzdat,ntdat,NBIN;
161 << 135 static G4double zdat[5],adat[5],tdat[8];
162 G4int currentZ = 0; << 136 G4double ya[1001],proba[5][8][1001];
163 G4int nYBinPerDecade = 4; << 137
164 std::size_t nbiny = 1000; << 138 const G4Material* oldMaterial;
165 std::size_t nbine = 0; << 139 G4std::vector<G4DataVector*> partialSumSigma;
166 << 140 G4bool samplingTablesAreFilled;
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 <<
176 private: <<
177 <<
178 G4ParticleDefinition* theElectron; <<
179 G4ParticleDefinition* thePositron; <<
180 G4String dataName{""}; <<
181 }; 141 };
182 142
183 //....oooOO0OOooo........oooOO0OOooo........oo << 143 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
184 144
185 inline void G4MuPairProductionModel::SetLowest << 145 inline
>> 146 G4double G4MuPairProductionModel::MaxSecondaryEnergy(
>> 147 const G4DynamicParticle* dynParticle)
186 { 148 {
187 lowestKinEnergy = e; << 149 return dynParticle->GetKineticEnergy();
188 } << 150 }
189 <<
190 //....oooOO0OOooo........oooOO0OOooo........oo <<
191 <<
192 inline <<
193 void G4MuPairProductionModel::SetParticle(cons <<
194 { <<
195 if(nullptr == particle) { <<
196 particle = p; <<
197 particleMass = particle->GetPDGMass(); <<
198 } <<
199 } <<
200 151
201 //....oooOO0OOooo........oooOO0OOooo........oo << 152 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
202 153
203 inline G4double << 154 inline
204 G4MuPairProductionModel::MaxSecondaryEnergyFor << 155 G4double G4MuPairProductionModel::MaxSecondaryEnergy(
205 G4double ZZ) << 156 const G4ParticleDefinition*,
>> 157 G4double kineticEnergy)
206 { 158 {
207 G4int Z = G4lrint(ZZ); << 159 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 } 160 }
216 161
217 //....oooOO0OOooo........oooOO0OOooo........oo << 162 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
218 163
219 #endif 164 #endif
220 165