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Geant4/processes/electromagnetic/standard/include/G4eBremsstrahlungRelModel.hh

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Differences between /processes/electromagnetic/standard/include/G4eBremsstrahlungRelModel.hh (Version 11.3.0) and /processes/electromagnetic/standard/include/G4eBremsstrahlungRelModel.hh (Version 11.2.2)


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 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:     G4eBremsstrahlungRelModel        32 // File name:     G4eBremsstrahlungRelModel
 33 //                extention of standard G4eBre     33 //                extention of standard G4eBremsstrahlungModel
 34 //                                                 34 //
 35 // Author:        Andreas Schaelicke               35 // Author:        Andreas Schaelicke
 36 //                                                 36 //
 37 // Creation date: 28.03.2008                       37 // Creation date: 28.03.2008
 38 //                                                 38 //
 39 // Modifications:                                  39 // Modifications:
 40 //                                                 40 //
 41 // 15.07.18  introduced data structures to sto     41 // 15.07.18  introduced data structures to store LPM functions and element depen
 42 //           dent data for faster run-time com     42 //           dent data for faster run-time computation (see more in .cc M.Novak)
 43 //                                                 43 //
 44 // Class Description:                              44 // Class Description:
 45 //                                                 45 //
 46 // Implementation of energy loss for gamma emi     46 // Implementation of energy loss for gamma emission by electrons and
 47 // positrons including an improved version of      47 // positrons including an improved version of the LPM effect
 48                                                    48 
 49 // -------------------------------------------     49 // -------------------------------------------------------------------
 50 //                                                 50 //
 51                                                    51 
 52 #ifndef G4eBremsstrahlungRelModel_h                52 #ifndef G4eBremsstrahlungRelModel_h
 53 #define G4eBremsstrahlungRelModel_h 1              53 #define G4eBremsstrahlungRelModel_h 1
 54                                                    54 
 55 #include "G4VEmModel.hh"                           55 #include "G4VEmModel.hh"
 56 #include <memory>                              << 
 57                                                    56 
 58 class G4ParticleChangeForLoss;                     57 class G4ParticleChangeForLoss;
 59                                                    58 
 60 class G4eBremsstrahlungRelModel : public G4VEm     59 class G4eBremsstrahlungRelModel : public G4VEmModel {
 61                                                    60 
 62 public:                                            61 public:
 63                                                    62 
 64   explicit G4eBremsstrahlungRelModel(const G4P     63   explicit G4eBremsstrahlungRelModel(const G4ParticleDefinition* p=nullptr,
 65                                      const G4S     64                                      const G4String& nam="eBremLPM");
 66                                                    65 
 67   ~G4eBremsstrahlungRelModel() override;           66   ~G4eBremsstrahlungRelModel() override;
 68                                                    67 
 69   void Initialise(const G4ParticleDefinition*,     68   void Initialise(const G4ParticleDefinition*, const G4DataVector&) override;
 70                                                    69 
 71   void InitialiseLocal(const G4ParticleDefinit     70   void InitialiseLocal(const G4ParticleDefinition*,
 72                        G4VEmModel* masterModel     71                        G4VEmModel* masterModel) override;
 73                                                    72 
 74   G4double ComputeDEDXPerVolume(const G4Materi     73   G4double ComputeDEDXPerVolume(const G4Material*,
 75                                 const G4Partic     74                                 const G4ParticleDefinition*,
 76                                 G4double ekin,     75                                 G4double ekin,
 77                                 G4double cutEn     76                                 G4double cutEnergy) override;
 78                                                    77 
 79   G4double ComputeCrossSectionPerAtom(const G4     78   G4double ComputeCrossSectionPerAtom(const G4ParticleDefinition*,
 80                                       G4double     79                                       G4double ekin,
 81                                       G4double     80                                       G4double zet,
 82                                       G4double     81                                       G4double,
 83                                       G4double     82                                       G4double cutEnergy,
 84                                       G4double     83                                       G4double maxEnergy = DBL_MAX) override;
 85                                                    84 
 86   void SampleSecondaries(std::vector<G4Dynamic     85   void SampleSecondaries(std::vector<G4DynamicParticle*>*,
 87                          const G4MaterialCutsC     86                          const G4MaterialCutsCouple*,
 88                          const G4DynamicPartic     87                          const G4DynamicParticle*,
 89                          G4double cutEnergy,       88                          G4double cutEnergy,
 90                          G4double maxEnergy) o     89                          G4double maxEnergy) override;
 91                                                    90 
 92   void SetupForMaterial(const G4ParticleDefini     91   void SetupForMaterial(const G4ParticleDefinition*,
 93                         const G4Material*, G4d     92                         const G4Material*, G4double) override;
 94                                                    93 
 95   G4double MinPrimaryEnergy(const G4Material*,     94   G4double MinPrimaryEnergy(const G4Material*,
 96                             const G4ParticleDe     95                             const G4ParticleDefinition*,
 97                             G4double cutEnergy     96                             G4double cutEnergy) override;
 98                                                    97 
 99 protected:                                         98 protected:
100                                                    99 
101   virtual G4double ComputeDXSectionPerAtom(G4d    100   virtual G4double ComputeDXSectionPerAtom(G4double gammaEnergy);
102                                                   101 
103   void SetParticle(const G4ParticleDefinition*    102   void SetParticle(const G4ParticleDefinition* p);
104                                                   103 
105 private:                                          104 private:
106                                                   105 
107   G4double ComputeBremLoss(G4double cutEnergy)    106   G4double ComputeBremLoss(G4double cutEnergy);
108                                                   107 
109   G4double ComputeXSectionPerAtom(G4double cut    108   G4double ComputeXSectionPerAtom(G4double cutEnergy);
110                                                   109 
111   G4double ComputeRelDXSectionPerAtom(G4double    110   G4double ComputeRelDXSectionPerAtom(G4double gammaEnergy);
112                                                   111 
113   // init special data per element i.e. per Z     112   // init special data per element i.e. per Z
114   void InitialiseElementData();                   113   void InitialiseElementData();
115                                                   114 
116   // methods for initialisation and run-time e    115   // methods for initialisation and run-time evaluation of LPM functions:
117   void InitLPMFunctions();                        116   void InitLPMFunctions();
118                                                   117 
119   void ComputeLPMfunctions(G4double& funcXiS,     118   void ComputeLPMfunctions(G4double& funcXiS,
120                            G4double& funcGS,      119                            G4double& funcGS,
121                            G4double& funcPhiS,    120                            G4double& funcPhiS,
122                            const G4double egam    121                            const G4double egamma);
123                                                   122 
124   void GetLPMFunctions(G4double& lpmGs,           123   void GetLPMFunctions(G4double& lpmGs,
125                        G4double& lpmPhis,         124                        G4double& lpmPhis,
126                        const G4double ss);        125                        const G4double ss);
127                                                   126 
128   void ComputeLPMGsPhis(G4double& funcGS,         127   void ComputeLPMGsPhis(G4double& funcGS,
129                         G4double& funcPhiS,       128                         G4double& funcPhiS,
130                         const G4double varShat    129                         const G4double varShat);
131                                                   130 
132   // for evaluating screening related function    131   // for evaluating screening related functions
133   void ComputeScreeningFunctions(G4double& phi    132   void ComputeScreeningFunctions(G4double& phi1,
134                                  G4double& phi    133                                  G4double& phi1m2,
135                                  G4double& psi    134                                  G4double& psi1,
136                                  G4double& psi    135                                  G4double& psi1m2,
137                                  const G4doubl    136                                  const G4double gam,
138                                  const G4doubl    137                                  const G4double eps);
139   // hide assignment operator and cctr            138   // hide assignment operator and cctr
140   G4eBremsstrahlungRelModel& operator=            139   G4eBremsstrahlungRelModel& operator=
141   (const G4eBremsstrahlungRelModel& right) = d    140   (const G4eBremsstrahlungRelModel& right) = delete;
142   G4eBremsstrahlungRelModel(const  G4eBremsstr    141   G4eBremsstrahlungRelModel(const  G4eBremsstrahlungRelModel&) = delete;
143                                                   142 
144 private:                                          143 private:
145                                                   144 
146   G4bool                      fIsUseCompleteSc    145   G4bool                      fIsUseCompleteScreening = false;
147   G4bool                      fIsInitializer =    146   G4bool                      fIsInitializer = false;
148   G4bool                      fUseLPM = true;     147   G4bool                      fUseLPM = true;
149                                                   148 
150 protected:                                        149 protected:
151                                                   150 
152   G4bool                      fIsElectron = tr    151   G4bool                      fIsElectron = true;
153   G4bool                      fIsScatOffElectr    152   G4bool                      fIsScatOffElectron = false;
154   G4bool                      fIsLPMActive = f    153   G4bool                      fIsLPMActive = false;
155   //                                              154   //
156   G4int                       fCurrentIZ = 0;     155   G4int                       fCurrentIZ = 0;
157   const G4ParticleDefinition* fPrimaryParticle    156   const G4ParticleDefinition* fPrimaryParticle = nullptr;
158   G4ParticleDefinition*       fGammaParticle =    157   G4ParticleDefinition*       fGammaParticle = nullptr;
159   G4ParticleChangeForLoss*    fParticleChange     158   G4ParticleChangeForLoss*    fParticleChange = nullptr;
160   // cash                                         159   // cash
161   G4double                    fPrimaryParticle    160   G4double                    fPrimaryParticleMass = 0.;
162   G4double                    fPrimaryKinEnerg    161   G4double                    fPrimaryKinEnergy = 0.;
163   G4double                    fPrimaryTotalEne    162   G4double                    fPrimaryTotalEnergy = 0.;
164   G4double                    fDensityFactor =    163   G4double                    fDensityFactor = 0.;
165   G4double                    fDensityCorr = 0    164   G4double                    fDensityCorr = 0.;
166   G4double                    fLowestKinEnergy    165   G4double                    fLowestKinEnergy;
167   // scattering off electrons                     166   // scattering off electrons
168   G4double                    fNucTerm = 0.;      167   G4double                    fNucTerm = 0.;
169   G4double                    fSumTerm = 0.;      168   G4double                    fSumTerm = 0.;
170                                                   169 
171 private:                                          170 private:
172                                                   171 
173   // LPM related members                          172   // LPM related members
174   G4double                    fLPMEnergyThresh    173   G4double                    fLPMEnergyThreshold;
175   G4double                    fLPMEnergy;         174   G4double                    fLPMEnergy;
176                                                   175 
177 protected:                                        176 protected:
178                                                   177 
179   static const G4double       gBremFactor;        178   static const G4double       gBremFactor;
180   static const G4double       gMigdalConstant;    179   static const G4double       gMigdalConstant;
181                                                   180 
182 private:                                          181 private:
183                                                   182 
184   static const G4int          gMaxZet;            183   static const G4int          gMaxZet;
185   //                                              184   //
186   static const G4double       gLPMconstant;       185   static const G4double       gLPMconstant;
187   //                                              186   //
188   static const G4double       gXGL[8];            187   static const G4double       gXGL[8];
189   static const G4double       gWGL[8];            188   static const G4double       gWGL[8];
190   static const G4double       gFelLowZet[8];      189   static const G4double       gFelLowZet[8];
191   static const G4double       gFinelLowZet[8];    190   static const G4double       gFinelLowZet[8];
192   //                                              191   //
193   struct ElementData {                            192   struct ElementData {
194     /** @brief \f$ \ln(Z) \f$  */                 193     /** @brief \f$ \ln(Z) \f$  */
195     G4double  fLogZ;                              194     G4double  fLogZ;
196     /** @brief \f$ \ln(Z)/3 + f_c \f$  */         195     /** @brief \f$ \ln(Z)/3 + f_c \f$  */
197     G4double  fFz;                                196     G4double  fFz;
198     /** @brief \f$ ((Fel-fc)+Finel*invZ)\f$  *    197     /** @brief \f$ ((Fel-fc)+Finel*invZ)\f$  */
199     G4double  fZFactor1;                          198     G4double  fZFactor1;
200     /** @brief \f$ (Fel-fc)\f$  */                199     /** @brief \f$ (Fel-fc)\f$  */
201     G4double  fZFactor11;                         200     G4double  fZFactor11;
202     /** @brief \f$ (1.0+invZ)/12  \f$  */         201     /** @brief \f$ (1.0+invZ)/12  \f$  */
203     G4double  fZFactor2;                          202     G4double  fZFactor2;
204     // LPM variables                              203     // LPM variables
205     G4double  fVarS1;                             204     G4double  fVarS1;
206     G4double  fILVarS1;                           205     G4double  fILVarS1;
207     G4double  fILVarS1Cond;                       206     G4double  fILVarS1Cond;
208     // constant factors to the screening funct    207     // constant factors to the screening function evaluations
209     G4double  fGammaFactor;                       208     G4double  fGammaFactor;
210     G4double  fEpsilonFactor;                     209     G4double  fEpsilonFactor;
211   };                                              210   };
212   //                                              211   //
213   struct LPMFuncs {                               212   struct LPMFuncs {
214     LPMFuncs() : fIsInitialized(false), fISDel    213     LPMFuncs() : fIsInitialized(false), fISDelta(100.), fSLimit(2.) {}
215     G4bool                 fIsInitialized;        214     G4bool                 fIsInitialized;
216     G4double               fISDelta;              215     G4double               fISDelta;
217     G4double               fSLimit;               216     G4double               fSLimit;
218     std::vector<G4double>  fLPMFuncG;             217     std::vector<G4double>  fLPMFuncG;
219     std::vector<G4double>  fLPMFuncPhi;           218     std::vector<G4double>  fLPMFuncPhi;
220   };                                              219   };
221   //                                              220   //
222   static std::shared_ptr<LPMFuncs> gLPMFuncs() << 221   static LPMFuncs                   gLPMFuncs;
223   static std::shared_ptr<std::vector<ElementDa << 222   static std::vector<ElementData*>  gElementData;
224   std::shared_ptr<LPMFuncs> fLPMFuncs;         << 223 
225   std::shared_ptr<std::vector<ElementData*>> f << 
226 };                                                224 };
227                                                   225 
228 #endif                                            226 #endif
229                                                   227