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Geant4/processes/electromagnetic/muons/include/G4MuPairProductionModel.hh

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Differences between /processes/electromagnetic/muons/include/G4MuPairProductionModel.hh (Version 11.3.0) and /processes/electromagnetic/muons/include/G4MuPairProductionModel.hh (Version 10.6.p3)


  1 //                                                  1 //
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 17 // *                                               17 // *                                                                  *
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 24 // *******************************************     24 // ********************************************************************
 25 //                                                 25 //
 26 //                                                 26 //
 27 // -------------------------------------------     27 // -------------------------------------------------------------------
 28 //                                                 28 //
 29 // GEANT4 Class header file                        29 // GEANT4 Class header file
 30 //                                                 30 //
 31 //                                                 31 //
 32 // File name:     G4MuPairProductionModel          32 // File name:     G4MuPairProductionModel
 33 //                                                 33 //
 34 // Author:        Vladimir Ivanchenko on base      34 // Author:        Vladimir Ivanchenko on base of Laszlo Urban code
 35 //                                                 35 //
 36 // Creation date: 18.05.2002                       36 // Creation date: 18.05.2002
 37 //                                                 37 //
 38 // Modifications:                                  38 // Modifications:
 39 //                                                 39 //
 40 // 23-12-02 Change interface in order to move      40 // 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     41 // 27-01-03 Make models region aware (V.Ivanchenko)
 42 // 13-02-03 Add name (V.Ivanchenko)                42 // 13-02-03 Add name (V.Ivanchenko)
 43 // 10-02-04 Update parameterisation using R.Ko     43 // 10-02-04 Update parameterisation using R.Kokoulin model (V.Ivanchenko)
 44 // 10-02-04 Add lowestKinEnergy (V.Ivanchenko)     44 // 10-02-04 Add lowestKinEnergy (V.Ivanchenko)
 45 // 13-02-06 Add ComputeCrossSectionPerAtom (mm     45 // 13-02-06 Add ComputeCrossSectionPerAtom (mma)
 46 // 12-05-06 Add parameter to SelectRandomAtom      46 // 12-05-06 Add parameter to SelectRandomAtom (A.Bogdanov) 
 47 // 11-10-07 Add ignoreCut flag (V.Ivanchenko)      47 // 11-10-07 Add ignoreCut flag (V.Ivanchenko) 
 48 // 28-02-08 Reorganized protected methods and      48 // 28-02-08 Reorganized protected methods and members (V.Ivanchenko) 
                                                   >>  49 
 49 //                                                 50 //
 50 // Class Description:                              51 // Class Description:
 51 //                                                 52 //
 52 // Implementation of e+e- pair production by m     53 // 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 //                                                 54 //
                                                   >>  55 
 56 // -------------------------------------------     56 // -------------------------------------------------------------------
 57 //                                                 57 //
 58                                                    58 
 59 #ifndef G4MuPairProductionModel_h                  59 #ifndef G4MuPairProductionModel_h
 60 #define G4MuPairProductionModel_h 1                60 #define G4MuPairProductionModel_h 1
 61                                                    61 
 62 #include "G4VEmModel.hh"                           62 #include "G4VEmModel.hh"
 63 #include "G4NistManager.hh"                        63 #include "G4NistManager.hh"
 64 #include "G4ElementData.hh"                        64 #include "G4ElementData.hh"
 65 #include "G4Physics2DVector.hh"                    65 #include "G4Physics2DVector.hh"
 66 #include <vector>                                  66 #include <vector>
 67                                                    67 
 68 class G4Element;                                   68 class G4Element;
 69 class G4ParticleChangeForLoss;                     69 class G4ParticleChangeForLoss;
 70 class G4ParticleChangeForGamma;                    70 class G4ParticleChangeForGamma;
 71                                                    71 
 72 class G4MuPairProductionModel : public G4VEmMo     72 class G4MuPairProductionModel : public G4VEmModel
 73 {                                                  73 {
 74 public:                                            74 public:
 75                                                    75 
 76   explicit G4MuPairProductionModel(const G4Par     76   explicit G4MuPairProductionModel(const G4ParticleDefinition* p = nullptr,
 77                                    const G4Str     77                                    const G4String& nam = "muPairProd");
 78                                                    78 
 79   ~G4MuPairProductionModel() override = defaul <<  79   virtual ~G4MuPairProductionModel();
 80                                                    80 
 81   void Initialise(const G4ParticleDefinition*, <<  81   virtual void Initialise(const G4ParticleDefinition*, 
                                                   >>  82                           const G4DataVector&) override;
 82                                                    83 
 83   void InitialiseLocal(const G4ParticleDefinit <<  84   virtual void InitialiseLocal(const G4ParticleDefinition*,
 84                        G4VEmModel* masterModel <<  85              G4VEmModel* masterModel) override;
 85                                                    86       
 86   G4double ComputeCrossSectionPerAtom(const G4 <<  87   virtual G4double ComputeCrossSectionPerAtom(
 87               G4double kineticEnergy,          <<  88          const G4ParticleDefinition*,
 88               G4double Z, G4double A,          <<  89          G4double kineticEnergy,
 89               G4double cutEnergy,              <<  90          G4double Z, G4double A,
 90               G4double maxEnergy) override;    <<  91          G4double cutEnergy,
                                                   >>  92          G4double maxEnergy) override;
 91                                                    93          
 92   G4double ComputeDEDXPerVolume(const G4Materi <<  94   virtual G4double ComputeDEDXPerVolume(const G4Material*,
 93                                 const G4Partic     95                                 const G4ParticleDefinition*,
 94                                 G4double kinet     96                                 G4double kineticEnergy,
 95                                 G4double cutEn     97                                 G4double cutEnergy) override;
 96                                                    98 
 97   void SampleSecondaries(std::vector<G4Dynamic <<  99   virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*, 
 98         const G4MaterialCutsCouple*,           << 100          const G4MaterialCutsCouple*,
 99         const G4DynamicParticle*,              << 101          const G4DynamicParticle*,
100         G4double tmin,                         << 102          G4double tmin,
101         G4double maxEnergy) override;          << 103          G4double maxEnergy) override;
102                                                << 104 
103   G4double MinPrimaryEnergy(const G4Material*, << 105   virtual G4double MinPrimaryEnergy(const G4Material*,
104                             const G4ParticleDe << 106                                     const G4ParticleDefinition*,
105                             G4double) override << 107                                     G4double) override;
106                                                << 
107   virtual G4double                             << 
108   ComputeDMicroscopicCrossSection(G4double tki << 
109           G4double pairEnergy);                << 
110                                                   108 
111   inline void SetLowestKineticEnergy(G4double     109   inline void SetLowestKineticEnergy(G4double e);
112                                                   110 
113   inline void SetParticle(const G4ParticleDefi    111   inline void SetParticle(const G4ParticleDefinition*);
114                                                   112 
115   // hide assignment operator and copy constru    113   // hide assignment operator and copy constructor
116   G4MuPairProductionModel & operator=             114   G4MuPairProductionModel & operator=
117   (const G4MuPairProductionModel &right) = del    115   (const G4MuPairProductionModel &right) = delete;
118   G4MuPairProductionModel(const  G4MuPairProdu    116   G4MuPairProductionModel(const  G4MuPairProductionModel&) = delete;
119                                                   117 
120 protected:                                        118 protected:
121                                                   119 
122   G4double ComputMuPairLoss(G4double Z, G4doub    120   G4double ComputMuPairLoss(G4double Z, G4double tkin, G4double cut,
123                             G4double tmax);       121                             G4double tmax);
124                                                   122 
125   G4double ComputeMicroscopicCrossSection(G4do    123   G4double ComputeMicroscopicCrossSection(G4double tkin,
126                                           G4do    124                                           G4double Z,
127                                           G4do    125                                           G4double cut);
128                                                   126 
129   G4double FindScaledEnergy(G4int Z, G4double  << 127   virtual G4double 
130           G4double yymin, G4double yymax);     << 128   ComputeDMicroscopicCrossSection(G4double tkin, G4double Z,
                                                   >> 129           G4double pairEnergy);
131                                                   130 
132   inline G4double MaxSecondaryEnergyForElement    131   inline G4double MaxSecondaryEnergyForElement(G4double kineticEnergy,
133                  G4double Z);                     132                  G4double Z);
134                                                   133 
                                                   >> 134 private:
                                                   >> 135 
135   void MakeSamplingTables();                      136   void MakeSamplingTables();
136                                                   137 
137   void StoreTables() const;                       138   void StoreTables() const;
138                                                   139 
139   G4bool RetrieveTables();                        140   G4bool RetrieveTables();
140                                                   141 
141   virtual void DataCorrupted(G4int Z, G4double << 142   void DataCorrupted(G4int Z, G4double logTkin) const;
                                                   >> 143 
                                                   >> 144   inline G4double FindScaledEnergy(G4int Z, G4double rand, G4double logTkin,
                                                   >> 145            G4double yymin, G4double yymax); 
142                                                   146 
143   G4ParticleChangeForLoss* fParticleChange = n << 147 protected:
144   const G4ParticleDefinition* particle = nullp << 148 
145   G4NistManager* nist = nullptr;               << 149   const G4ParticleDefinition* particle;
                                                   >> 150   G4NistManager*              nist;
146                                                   151 
147   G4double factorForCross;                        152   G4double factorForCross;
148   G4double sqrte;                                 153   G4double sqrte;
149   G4double particleMass = 0.0;                 << 154   G4double particleMass;
150   G4double z13 = 0.0;                          << 155   G4double z13;
151   G4double z23 = 0.0;                          << 156   G4double z23;
152   G4double lnZ = 0.0;                          << 157   G4double lnZ;
                                                   >> 158   G4int    currentZ;
                                                   >> 159 
                                                   >> 160   static const G4double xgi[8],wgi[8];
                                                   >> 161 
                                                   >> 162   G4ParticleDefinition*       theElectron;
                                                   >> 163   G4ParticleDefinition*       thePositron;
                                                   >> 164   G4ParticleChangeForLoss*    fParticleChange;
153                                                   165 
154   G4double minPairEnergy;                         166   G4double minPairEnergy;
155   G4double lowestKinEnergy;                       167   G4double lowestKinEnergy;
156                                                   168 
                                                   >> 169   G4int nzdat;
                                                   >> 170 
                                                   >> 171   // gamma energy bins
                                                   >> 172   G4int    nYBinPerDecade;
                                                   >> 173   size_t   nbiny;
                                                   >> 174   size_t   nbine;
                                                   >> 175   G4double ymin;
                                                   >> 176   G4double dy;
157   G4double emin;                                  177   G4double emin;
158   G4double emax;                                  178   G4double emax;
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                                                   179 
176 private:                                       << 180   G4bool fTableToFile;
177                                                << 
178   G4ParticleDefinition* theElectron;           << 
179   G4ParticleDefinition* thePositron;           << 
180   G4String dataName{""};                       << 
181 };                                                181 };
182                                                   182 
183 //....oooOO0OOooo........oooOO0OOooo........oo    183 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
184                                                   184 
185 inline void G4MuPairProductionModel::SetLowest    185 inline void G4MuPairProductionModel::SetLowestKineticEnergy(G4double e) 
186 {                                                 186 {
187   lowestKinEnergy = e;                            187   lowestKinEnergy = e;
188 }                                                 188 }
189                                                   189 
190 //....oooOO0OOooo........oooOO0OOooo........oo    190 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
191                                                   191 
192 inline                                            192 inline
193 void G4MuPairProductionModel::SetParticle(cons    193 void G4MuPairProductionModel::SetParticle(const G4ParticleDefinition* p)
194 {                                                 194 {
195   if(nullptr == particle) {                    << 195   if(!particle) {
196     particle = p;                                 196     particle = p;
197     particleMass = particle->GetPDGMass();        197     particleMass = particle->GetPDGMass();
198   }                                               198   }
199 }                                                 199 }
200                                                   200 
201 //....oooOO0OOooo........oooOO0OOooo........oo    201 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
202                                                   202 
203 inline G4double                                   203 inline G4double 
204 G4MuPairProductionModel::MaxSecondaryEnergyFor    204 G4MuPairProductionModel::MaxSecondaryEnergyForElement(G4double kineticEnergy,
205                   G4double ZZ)                    205                   G4double ZZ)
206 {                                                 206 {
207   G4int Z = G4lrint(ZZ);                          207   G4int Z = G4lrint(ZZ);
208   if(Z != currentZ) {                             208   if(Z != currentZ) {
209     currentZ = Z;                                 209     currentZ = Z;
210     z13 = nist->GetZ13(Z);                        210     z13 = nist->GetZ13(Z);
211     z23 = z13*z13;                                211     z23 = z13*z13;
212     lnZ = nist->GetLOGZ(Z);                       212     lnZ = nist->GetLOGZ(Z);
213   }                                               213   }
214   return kineticEnergy + particleMass*(1.0 - 0    214   return kineticEnergy + particleMass*(1.0 - 0.75*sqrte*z13);
                                                   >> 215 }
                                                   >> 216 
                                                   >> 217 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
                                                   >> 218 
                                                   >> 219 inline G4double 
                                                   >> 220 G4MuPairProductionModel::FindScaledEnergy(G4int Z, G4double rand,
                                                   >> 221             G4double logTkin,
                                                   >> 222             G4double yymin, G4double yymax)
                                                   >> 223 {
                                                   >> 224   G4double res = yymin;
                                                   >> 225   G4Physics2DVector* pv = fElementData->GetElement2DData(Z);
                                                   >> 226   if(!pv) { 
                                                   >> 227     DataCorrupted(Z, logTkin); 
                                                   >> 228   } else {
                                                   >> 229     G4double pmin = pv->Value(yymin, logTkin);
                                                   >> 230     G4double pmax = pv->Value(yymax, logTkin);
                                                   >> 231     G4double p0   = pv->Value(0.0, logTkin);
                                                   >> 232     if(p0 <= 0.0) { DataCorrupted(Z, logTkin); }
                                                   >> 233     else { res = pv->FindLinearX((pmin + rand*(pmax - pmin))/p0, logTkin); }
                                                   >> 234   }
                                                   >> 235   return res;
215 }                                                 236 }
216                                                   237 
217 //....oooOO0OOooo........oooOO0OOooo........oo    238 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
218                                                   239 
219 #endif                                            240 #endif
220                                                   241