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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 11.2.1)


  1 //                                                  1 //
  2 // *******************************************      2 // ********************************************************************
  3 // * License and Disclaimer                         3 // * License and Disclaimer                                           *
  4 // *                                                4 // *                                                                  *
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  6 // * the Geant4 Collaboration.  It is provided      6 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
  7 // * conditions of the Geant4 Software License      7 // * conditions of the Geant4 Software License,  included in the file *
  8 // * LICENSE and available at  http://cern.ch/      8 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
  9 // * include a list of copyright holders.           9 // * include a list of copyright holders.                             *
 10 // *                                               10 // *                                                                  *
 11 // * Neither the authors of this software syst     11 // * Neither the authors of this software system, nor their employing *
 12 // * institutes,nor the agencies providing fin     12 // * institutes,nor the agencies providing financial support for this *
 13 // * work  make  any representation or  warran     13 // * work  make  any representation or  warranty, express or implied, *
 14 // * regarding  this  software system or assum     14 // * regarding  this  software system or assume any liability for its *
 15 // * use.  Please see the license in the file      15 // * use.  Please see the license in the file  LICENSE  and URL above *
 16 // * for the full disclaimer and the limitatio     16 // * for the full disclaimer and the limitation of liability.         *
 17 // *                                               17 // *                                                                  *
 18 // * This  code  implementation is the result      18 // * This  code  implementation is the result of  the  scientific and *
 19 // * technical work of the GEANT4 collaboratio     19 // * technical work of the GEANT4 collaboration.                      *
 20 // * By using,  copying,  modifying or  distri     20 // * By using,  copying,  modifying or  distributing the software (or *
 21 // * any work based  on the software)  you  ag     21 // * any work based  on the software)  you  agree  to acknowledge its *
 22 // * use  in  resulting  scientific  publicati     22 // * use  in  resulting  scientific  publications,  and indicate your *
 23 // * acceptance of all terms of the Geant4 Sof     23 // * acceptance of all terms of the Geant4 Software license.          *
 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 // Class Description:                              50 // Class Description:
 51 //                                                 51 //
 52 // Implementation of e+e- pair production by m     52 // Implementation of e+e- pair production by muons
 53 // A.G. Bogdanov et al., IEEE Trans. Nuc. Sci.     53 // A.G. Bogdanov et al., IEEE Trans. Nuc. Sci., Vol.53, No.2, 2006
 54 // Base class for all pair production models f     54 // Base class for all pair production models for muons and hadrons.
 55 //                                                 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   ~G4MuPairProductionModel() = default;
 80                                                    80 
 81   void Initialise(const G4ParticleDefinition*,     81   void Initialise(const G4ParticleDefinition*, const G4DataVector&) override;
 82                                                    82 
 83   void InitialiseLocal(const G4ParticleDefinit     83   void InitialiseLocal(const G4ParticleDefinition*,
 84                        G4VEmModel* masterModel     84                        G4VEmModel* masterModel) override;
 85                                                    85       
 86   G4double ComputeCrossSectionPerAtom(const G4     86   G4double ComputeCrossSectionPerAtom(const G4ParticleDefinition*,
 87               G4double kineticEnergy,              87               G4double kineticEnergy,
 88               G4double Z, G4double A,              88               G4double Z, G4double A,
 89               G4double cutEnergy,                  89               G4double cutEnergy,
 90               G4double maxEnergy) override;        90               G4double maxEnergy) override;
 91                                                    91          
 92   G4double ComputeDEDXPerVolume(const G4Materi     92   G4double ComputeDEDXPerVolume(const G4Material*,
 93                                 const G4Partic     93                                 const G4ParticleDefinition*,
 94                                 G4double kinet     94                                 G4double kineticEnergy,
 95                                 G4double cutEn     95                                 G4double cutEnergy) override;
 96                                                    96 
 97   void SampleSecondaries(std::vector<G4Dynamic     97   void SampleSecondaries(std::vector<G4DynamicParticle*>*, 
 98         const G4MaterialCutsCouple*,               98         const G4MaterialCutsCouple*,
 99         const G4DynamicParticle*,                  99         const G4DynamicParticle*,
100         G4double tmin,                            100         G4double tmin,
101         G4double maxEnergy) override;             101         G4double maxEnergy) override;
102                                                   102 
103   G4double MinPrimaryEnergy(const G4Material*,    103   G4double MinPrimaryEnergy(const G4Material*,
104                             const G4ParticleDe    104                             const G4ParticleDefinition*,
105                             G4double) override    105                             G4double) override;
106                                                   106 
107   virtual G4double                                107   virtual G4double 
108   ComputeDMicroscopicCrossSection(G4double tki    108   ComputeDMicroscopicCrossSection(G4double tkin, G4double Z,
109           G4double pairEnergy);                   109           G4double pairEnergy);
110                                                   110 
111   inline void SetLowestKineticEnergy(G4double     111   inline void SetLowestKineticEnergy(G4double e);
112                                                   112 
113   inline void SetParticle(const G4ParticleDefi    113   inline void SetParticle(const G4ParticleDefinition*);
114                                                   114 
115   // hide assignment operator and copy constru    115   // hide assignment operator and copy constructor
116   G4MuPairProductionModel & operator=             116   G4MuPairProductionModel & operator=
117   (const G4MuPairProductionModel &right) = del    117   (const G4MuPairProductionModel &right) = delete;
118   G4MuPairProductionModel(const  G4MuPairProdu    118   G4MuPairProductionModel(const  G4MuPairProductionModel&) = delete;
119                                                   119 
120 protected:                                        120 protected:
121                                                   121 
122   G4double ComputMuPairLoss(G4double Z, G4doub    122   G4double ComputMuPairLoss(G4double Z, G4double tkin, G4double cut,
123                             G4double tmax);       123                             G4double tmax);
124                                                   124 
125   G4double ComputeMicroscopicCrossSection(G4do    125   G4double ComputeMicroscopicCrossSection(G4double tkin,
126                                           G4do    126                                           G4double Z,
127                                           G4do    127                                           G4double cut);
128                                                   128 
129   G4double FindScaledEnergy(G4int Z, G4double     129   G4double FindScaledEnergy(G4int Z, G4double rand, G4double logTkin,
130           G4double yymin, G4double yymax);        130           G4double yymin, G4double yymax); 
131                                                   131 
132   inline G4double MaxSecondaryEnergyForElement    132   inline G4double MaxSecondaryEnergyForElement(G4double kineticEnergy,
133                  G4double Z);                     133                  G4double Z);
134                                                   134 
135   void MakeSamplingTables();                      135   void MakeSamplingTables();
136                                                   136 
137   void StoreTables() const;                       137   void StoreTables() const;
138                                                   138 
139   G4bool RetrieveTables();                        139   G4bool RetrieveTables();
140                                                   140 
141   virtual void DataCorrupted(G4int Z, G4double    141   virtual void DataCorrupted(G4int Z, G4double logTkin) const;
142                                                   142 
143   G4ParticleChangeForLoss* fParticleChange = n    143   G4ParticleChangeForLoss* fParticleChange = nullptr;
144   const G4ParticleDefinition* particle = nullp    144   const G4ParticleDefinition* particle = nullptr;
145   G4NistManager* nist = nullptr;                  145   G4NistManager* nist = nullptr;
146                                                   146 
147   G4double factorForCross;                        147   G4double factorForCross;
148   G4double sqrte;                                 148   G4double sqrte;
149   G4double particleMass = 0.0;                    149   G4double particleMass = 0.0;
150   G4double z13 = 0.0;                             150   G4double z13 = 0.0;
151   G4double z23 = 0.0;                             151   G4double z23 = 0.0;
152   G4double lnZ = 0.0;                             152   G4double lnZ = 0.0;
153                                                   153 
154   G4double minPairEnergy;                         154   G4double minPairEnergy;
155   G4double lowestKinEnergy;                       155   G4double lowestKinEnergy;
156                                                   156 
157   G4double emin;                                  157   G4double emin;
158   G4double emax;                                  158   G4double emax;
159   G4double ymin = -5.0;                           159   G4double ymin = -5.0;
160   G4double dy = 0.005;                            160   G4double dy = 0.005;
161                                                   161 
162   G4int currentZ = 0;                             162   G4int currentZ = 0;
163   G4int nYBinPerDecade = 4;                       163   G4int nYBinPerDecade = 4;
164   std::size_t nbiny = 1000;                       164   std::size_t nbiny = 1000;
165   std::size_t nbine = 0;                          165   std::size_t nbine = 0;
166                                                   166 
167   G4bool fTableToFile = false;                    167   G4bool fTableToFile = false;
168                                                   168 
169   // static members                               169   // static members
170   static const G4int NZDATPAIR = 5;               170   static const G4int NZDATPAIR = 5;
171   static const G4int NINTPAIR = 8;                171   static const G4int NINTPAIR = 8;
172   static const G4int ZDATPAIR[NZDATPAIR];         172   static const G4int ZDATPAIR[NZDATPAIR];
173   static const G4double xgi[NINTPAIR];            173   static const G4double xgi[NINTPAIR];
174   static const G4double wgi[NINTPAIR];            174   static const G4double wgi[NINTPAIR];
175                                                   175 
176 private:                                          176 private:
177                                                   177 
178   G4ParticleDefinition* theElectron;              178   G4ParticleDefinition* theElectron;
179   G4ParticleDefinition* thePositron;              179   G4ParticleDefinition* thePositron;
180   G4String dataName{""};                          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(nullptr == 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 }                                                 215 }
216                                                   216 
217 //....oooOO0OOooo........oooOO0OOooo........oo    217 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
218                                                   218 
219 #endif                                            219 #endif
220                                                   220