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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 9.1.p3)


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 25 //                                                 25 //
                                                   >>  26 // $Id: G4MuPairProductionModel.hh,v 1.24 2007/10/11 13:52:03 vnivanch Exp $
                                                   >>  27 // GEANT4 tag $Name: geant4-09-01-patch-03 $
 26 //                                                 28 //
 27 // -------------------------------------------     29 // -------------------------------------------------------------------
 28 //                                                 30 //
 29 // GEANT4 Class header file                        31 // GEANT4 Class header file
 30 //                                                 32 //
 31 //                                                 33 //
 32 // File name:     G4MuPairProductionModel          34 // File name:     G4MuPairProductionModel
 33 //                                                 35 //
 34 // Author:        Vladimir Ivanchenko on base      36 // Author:        Vladimir Ivanchenko on base of Laszlo Urban code
 35 //                                                 37 //
 36 // Creation date: 18.05.2002                       38 // Creation date: 18.05.2002
 37 //                                                 39 //
 38 // Modifications:                                  40 // Modifications:
 39 //                                                 41 //
 40 // 23-12-02 Change interface in order to move      42 // 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     43 // 27-01-03 Make models region aware (V.Ivanchenko)
 42 // 13-02-03 Add name (V.Ivanchenko)                44 // 13-02-03 Add name (V.Ivanchenko)
 43 // 10-02-04 Update parameterisation using R.Ko     45 // 10-02-04 Update parameterisation using R.Kokoulin model (V.Ivanchenko)
 44 // 10-02-04 Add lowestKinEnergy (V.Ivanchenko)     46 // 10-02-04 Add lowestKinEnergy (V.Ivanchenko)
 45 // 13-02-06 Add ComputeCrossSectionPerAtom (mm     47 // 13-02-06 Add ComputeCrossSectionPerAtom (mma)
 46 // 12-05-06 Add parameter to SelectRandomAtom      48 // 12-05-06 Add parameter to SelectRandomAtom (A.Bogdanov) 
 47 // 11-10-07 Add ignoreCut flag (V.Ivanchenko)      49 // 11-10-07 Add ignoreCut flag (V.Ivanchenko) 
 48 // 28-02-08 Reorganized protected methods and  <<  50 
 49 //                                                 51 //
 50 // Class Description:                              52 // Class Description:
 51 //                                                 53 //
 52 // Implementation of e+e- pair production by m     54 // 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 //                                                 55 //
                                                   >>  56 
 56 // -------------------------------------------     57 // -------------------------------------------------------------------
 57 //                                                 58 //
 58                                                    59 
 59 #ifndef G4MuPairProductionModel_h                  60 #ifndef G4MuPairProductionModel_h
 60 #define G4MuPairProductionModel_h 1                61 #define G4MuPairProductionModel_h 1
 61                                                    62 
 62 #include "G4VEmModel.hh"                           63 #include "G4VEmModel.hh"
 63 #include "G4NistManager.hh"                    << 
 64 #include "G4ElementData.hh"                    << 
 65 #include "G4Physics2DVector.hh"                << 
 66 #include <vector>                                  64 #include <vector>
 67                                                    65 
 68 class G4Element;                                   66 class G4Element;
 69 class G4ParticleChangeForLoss;                     67 class G4ParticleChangeForLoss;
 70 class G4ParticleChangeForGamma;                    68 class G4ParticleChangeForGamma;
 71                                                    69 
 72 class G4MuPairProductionModel : public G4VEmMo     70 class G4MuPairProductionModel : public G4VEmModel
 73 {                                                  71 {
                                                   >>  72 
 74 public:                                            73 public:
 75                                                    74 
 76   explicit G4MuPairProductionModel(const G4Par <<  75   G4MuPairProductionModel(const G4ParticleDefinition* p = 0,
 77                                    const G4Str <<  76                           const G4String& nam = "muPairProd");
                                                   >>  77 
                                                   >>  78   virtual ~G4MuPairProductionModel();
                                                   >>  79 
                                                   >>  80   void SetParticle(const G4ParticleDefinition*);
 78                                                    81 
 79   ~G4MuPairProductionModel() override = defaul <<  82   void Initialise(const G4ParticleDefinition*, const G4DataVector&);
 80                                                    83 
 81   void Initialise(const G4ParticleDefinition*, <<  84   void SetLowestKineticEnergy(G4double e) {lowestKinEnergy = e;};
 82                                                    85 
 83   void InitialiseLocal(const G4ParticleDefinit <<  86   G4double MinEnergyCut(const G4ParticleDefinition*,
 84                        G4VEmModel* masterModel <<  87                         const G4MaterialCutsCouple*);
 85                                                    88       
 86   G4double ComputeCrossSectionPerAtom(const G4 <<  89   virtual G4double ComputeCrossSectionPerAtom(
 87               G4double kineticEnergy,          <<  90          const G4ParticleDefinition*,
 88               G4double Z, G4double A,          <<  91          G4double kineticEnergy,
 89               G4double cutEnergy,              <<  92          G4double Z, G4double A,
 90               G4double maxEnergy) override;    <<  93          G4double cutEnergy,
                                                   >>  94          G4double maxEnergy);
 91                                                    95          
 92   G4double ComputeDEDXPerVolume(const G4Materi <<  96   virtual G4double CrossSectionPerVolume(const G4Material*,
                                                   >>  97                          const G4ParticleDefinition*,
                                                   >>  98                                G4double kineticEnergy,
                                                   >>  99                                G4double cutEnergy,
                                                   >> 100                                G4double maxEnergy);
                                                   >> 101              
                                                   >> 102   virtual G4double ComputeDEDXPerVolume(const G4Material*,
 93                                 const G4Partic    103                                 const G4ParticleDefinition*,
 94                                 G4double kinet    104                                 G4double kineticEnergy,
 95                                 G4double cutEn << 105                                 G4double cutEnergy);
 96                                                   106 
 97   void SampleSecondaries(std::vector<G4Dynamic    107   void SampleSecondaries(std::vector<G4DynamicParticle*>*, 
 98         const G4MaterialCutsCouple*,           << 108        const G4MaterialCutsCouple*,
 99         const G4DynamicParticle*,              << 109        const G4DynamicParticle*,
100         G4double tmin,                         << 110        G4double tmin,
101         G4double maxEnergy) override;          << 111        G4double maxEnergy);
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                                                   112 
120 protected:                                        113 protected:
121                                                   114 
                                                   >> 115   inline G4double MaxSecondaryEnergy(const G4ParticleDefinition*,
                                                   >> 116              G4double kineticEnergy);
                                                   >> 117 
                                                   >> 118 
                                                   >> 119 public:
                                                   >> 120 
122   G4double ComputMuPairLoss(G4double Z, G4doub    121   G4double ComputMuPairLoss(G4double Z, G4double tkin, G4double cut,
123                             G4double tmax);       122                             G4double tmax);
124                                                   123 
125   G4double ComputeMicroscopicCrossSection(G4do    124   G4double ComputeMicroscopicCrossSection(G4double tkin,
126                                           G4do    125                                           G4double Z,
127                                           G4do    126                                           G4double cut);
128                                                   127 
129   G4double FindScaledEnergy(G4int Z, G4double  << 128   G4double ComputeDMicroscopicCrossSection(G4double tkin,
130           G4double yymin, G4double yymax);     << 129                                            G4double Z,
                                                   >> 130                                            G4double pairEnergy);
131                                                   131 
132   inline G4double MaxSecondaryEnergyForElement << 132   inline void SetIgnoreCutFlag(G4bool);
133                  G4double Z);                  << 
134                                                   133 
135   void MakeSamplingTables();                   << 134   inline G4bool IgnoreCutFlag() const;
136                                                   135 
137   void StoreTables() const;                    << 136 private:
138                                                   137 
139   G4bool RetrieveTables();                     << 138   const G4Element* SelectRandomAtom(G4double kinEnergy, 
                                                   >> 139             G4double dt, 
                                                   >> 140             G4int it,
                                                   >> 141             const G4MaterialCutsCouple* couple, 
                                                   >> 142             G4double tmin);
140                                                   143 
141   virtual void DataCorrupted(G4int Z, G4double << 144   void MakeSamplingTables();
142                                                   145 
143   G4ParticleChangeForLoss* fParticleChange = n << 146   void SetCurrentElement(G4double Z);
144   const G4ParticleDefinition* particle = nullp << 
145   G4NistManager* nist = nullptr;               << 
146                                                   147 
147   G4double factorForCross;                     << 148   inline G4double InterpolatedIntegralCrossSection(
148   G4double sqrte;                              << 149          G4double dt, G4double dz, G4int iz,
149   G4double particleMass = 0.0;                 << 150          G4int it, G4int iy, G4double z);
150   G4double z13 = 0.0;                          << 151 
151   G4double z23 = 0.0;                          << 152   // hide assignment operator
152   G4double lnZ = 0.0;                          << 153   G4MuPairProductionModel & operator=(const  G4MuPairProductionModel &right);
                                                   >> 154   G4MuPairProductionModel(const  G4MuPairProductionModel&);
                                                   >> 155 
                                                   >> 156   G4ParticleDefinition*       theElectron;
                                                   >> 157   G4ParticleDefinition*       thePositron;
                                                   >> 158   G4ParticleChangeForLoss*    fParticleChange;
                                                   >> 159   G4ParticleChangeForGamma*   gParticleChange;
153                                                   160 
154   G4double minPairEnergy;                         161   G4double minPairEnergy;
155   G4double lowestKinEnergy;                       162   G4double lowestKinEnergy;
156                                                   163 
157   G4double emin;                               << 164   G4double factorForCross;
158   G4double emax;                               << 165   G4double sqrte;
159   G4double ymin = -5.0;                        << 166   G4double particleMass;
160   G4double dy = 0.005;                         << 167   G4double currentZ;
161                                                << 168   G4double z13;
162   G4int currentZ = 0;                          << 169   G4double z23;
163   G4int nYBinPerDecade = 4;                    << 170   G4double lnZ;
164   std::size_t nbiny = 1000;                    << 171 
165   std::size_t nbine = 0;                       << 172   const G4ParticleDefinition* particle;
166                                                << 173 
167   G4bool fTableToFile = false;                 << 174   // tables for sampling
168                                                << 175   G4int nzdat;
169   // static members                            << 176   G4int ntdat;
170   static const G4int NZDATPAIR = 5;            << 177   G4int nbiny;
171   static const G4int NINTPAIR = 8;             << 178   size_t nmaxElements;
172   static const G4int ZDATPAIR[NZDATPAIR];      << 179   static G4double zdat[5],adat[5],tdat[8],xgi[8],wgi[8];
173   static const G4double xgi[NINTPAIR];         << 180   G4double ya[1001],proba[5][8][1001];
174   static const G4double wgi[NINTPAIR];         << 181 
                                                   >> 182   G4double ymin;
                                                   >> 183   G4double ymax;
                                                   >> 184   G4double dy;
175                                                   185 
176 private:                                       << 186   G4bool  ignoreCut;
177                                                   187 
178   G4ParticleDefinition* theElectron;           << 188   G4bool  samplingTablesAreFilled;
179   G4ParticleDefinition* thePositron;           << 189   std::vector<G4double>   partialSum;
180   G4String dataName{""};                       << 
181 };                                                190 };
182                                                   191 
183 //....oooOO0OOooo........oooOO0OOooo........oo    192 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
184                                                   193 
185 inline void G4MuPairProductionModel::SetLowest << 194 inline G4double G4MuPairProductionModel::MaxSecondaryEnergy(
                                                   >> 195                                  const G4ParticleDefinition*,
                                                   >> 196                    G4double kineticEnergy)
186 {                                                 197 {
187   lowestKinEnergy = e;                         << 198   G4double maxPairEnergy = kineticEnergy + particleMass*(1.0 - 0.75*sqrte*z13);
                                                   >> 199   return maxPairEnergy;
188 }                                                 200 }
189                                                   201 
190 //....oooOO0OOooo........oooOO0OOooo........oo    202 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
191                                                   203 
192 inline                                         << 204 inline void G4MuPairProductionModel::SetCurrentElement(G4double Z)
193 void G4MuPairProductionModel::SetParticle(cons << 
194 {                                                 205 {
195   if(nullptr == particle) {                    << 206   if(Z != currentZ) {
196     particle = p;                              << 207     currentZ = Z;
197     particleMass = particle->GetPDGMass();     << 208     z13 = std::pow(Z,0.333333333);
                                                   >> 209     z23 = z13*z13;
                                                   >> 210     lnZ = std::log(Z);
198   }                                               211   }
199 }                                                 212 }
200                                                   213 
201 //....oooOO0OOooo........oooOO0OOooo........oo    214 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
202                                                   215 
203 inline G4double                                << 216 inline G4double G4MuPairProductionModel::InterpolatedIntegralCrossSection(
204 G4MuPairProductionModel::MaxSecondaryEnergyFor << 217           G4double dt, G4double dz,
205                   G4double ZZ)                 << 218                 G4int iz, G4int it, G4int iy, G4double z)
206 {                                                 219 {
207   G4int Z = G4lrint(ZZ);                       << 220   G4double fac =  1./(zdat[iz]  *(zdat[iz]  +1.));
208   if(Z != currentZ) {                          << 221   G4double fac1 = 1./(zdat[iz-1]*(zdat[iz-1]+1.));
209     currentZ = Z;                              << 222   G4double f0 = fac1*proba[iz-1][it-1][iy] + 
210     z13 = nist->GetZ13(Z);                     << 223                 (fac*proba[iz][it-1][iy]-fac1*proba[iz-1][it-1][iy])*dz;
211     z23 = z13*z13;                             << 224   G4double f1 = fac1*proba[iz-1][it  ][iy] + 
212     lnZ = nist->GetLOGZ(Z);                    << 225                 (fac*proba[iz][it  ][iy]-fac1*proba[iz-1][it  ][iy])*dz;
213   }                                            << 226   return (f0 + (f1-f0)*dt)*z*(z+1.);
214   return kineticEnergy + particleMass*(1.0 - 0 << 227 }
                                                   >> 228 
                                                   >> 229 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
                                                   >> 230 
                                                   >> 231 inline void G4MuPairProductionModel::SetIgnoreCutFlag(G4bool val)
                                                   >> 232 {
                                                   >> 233   ignoreCut = val;
                                                   >> 234 }
                                                   >> 235 
                                                   >> 236 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
                                                   >> 237 
                                                   >> 238 inline G4bool G4MuPairProductionModel::IgnoreCutFlag() const
                                                   >> 239 {
                                                   >> 240   return ignoreCut;
215 }                                                 241 }
216                                                   242 
217 //....oooOO0OOooo........oooOO0OOooo........oo    243 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
218                                                   244 
219 #endif                                            245 #endif
220                                                   246