include/Geant4/G4GammaGeneralProcess.hh

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0025 //
0026 //
0027 // -------------------------------------------------------------------
0028 //
0029 // GEANT4 Class header file
0030 //
0031 //
0032 // File name:     G4GammaGeneralProcess
0033 //
0034 // Author:        Vladimir Ivanchenko
0035 //
0036 // Creation date: 19.07.2018
0037 //
0038 // Modifications:
0039 //
0040 // Class Description:
0041 //
0042 // It is the gamma super process
0043
0044 // -------------------------------------------------------------------
0045 //
0046
0047 #ifndef G4GammaGeneralProcess_h
0048 #define G4GammaGeneralProcess_h 1
0049
0050 #include "G4VEmProcess.hh"
0051 #include "globals.hh"
0052 #include "G4EmDataHandler.hh"
0053
0054 class G4Step;
0055 class G4Track;
0056 class G4ParticleDefinition;
0057 class G4VParticleChange;
0058 class G4GammaConversionToMuons;
0059 class G4HadronicProcess;
0060 class G4MaterialCutsCouple;
0061
0062 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0063
0064 class G4GammaGeneralProcess : public G4VEmProcess
0065 {
0066 public:
0067
0068   explicit G4GammaGeneralProcess(const G4String& pname="GammaGeneralProc");
0069
0070   ~G4GammaGeneralProcess() override;
0071
0072   G4bool IsApplicable(const G4ParticleDefinition&) override;
0073
0074   void AddEmProcess(G4VEmProcess*);
0075
0076   void AddMMProcess(G4GammaConversionToMuons*);
0077
0078   void AddHadProcess(G4HadronicProcess*);
0079
0080   void ProcessDescription(std::ostream& outFile) const override;
0081
0082 protected:
0083
0084   void InitialiseProcess(const G4ParticleDefinition*) override;
0085
0086 public:
0087
0088   // Initialise for build of tables
0089   void PreparePhysicsTable(const G4ParticleDefinition&) override;
0090
0091   // Build physics table during initialisation
0092   void BuildPhysicsTable(const G4ParticleDefinition&) override;
0093
0094   // Called before tracking of each new G4Track
0095   void StartTracking(G4Track*) override;
0096
0097   // implementation of virtual method, specific for G4GammaGeneralProcess
0098   G4double PostStepGetPhysicalInteractionLength(
0099                              const G4Track& track,
0100                              G4double   previousStepSize,
0101                              G4ForceCondition* condition) override;
0102
0103   // implementation of virtual method, specific for G4GammaGeneralProcess
0104   G4VParticleChange* PostStepDoIt(const G4Track&, const G4Step&) override;
0105
0106   // Store PhysicsTable in a file.
0107   // Return false in case of failure at I/O
0108   G4bool StorePhysicsTable(const G4ParticleDefinition*,
0109                            const G4String& directory,
0110                            G4bool ascii = false) override;
0111
0112   // Retrieve Physics from a file.
0113   // (return true if the Physics Table can be build by using file)
0114   // (return false if the process has no functionality or in case of failure)
0115   // File name should is constructed as processName+particleName and the
0116   // should be placed under the directory specifed by the argument.
0117   G4bool RetrievePhysicsTable(const G4ParticleDefinition*,
0118                               const G4String& directory,
0119                               G4bool ascii) override;
0120
0121   // Return sub-process limiting current step
0122   const G4VProcess* GetCreatorProcess() const override;
0123   inline const G4VProcess* GetSelectedProcess() const;
0124
0125   // Temporary methods
0126   const G4String& GetSubProcessName() const;
0127   G4int GetSubProcessSubType() const;
0128
0129   G4VEmProcess* GetEmProcess(const G4String& name) override;
0130
0131   inline G4HadronicProcess* GetGammaNuclear() const;
0132
0133   // hide copy constructor and assignment operator
0134   G4GammaGeneralProcess(G4GammaGeneralProcess &) = delete;
0135   G4GammaGeneralProcess & operator=
0136   (const G4GammaGeneralProcess &right) = delete;
0137
0138 protected:
0139
0140   G4double GetMeanFreePath(const G4Track& track, G4double previousStepSize,
0141                            G4ForceCondition* condition) override;
0142
0143   inline G4double ComputeGeneralLambda(size_t idxe, size_t idxt);
0144
0145   inline G4double GetProbability(size_t idxt);
0146
0147   inline void SelectedProcess(const G4Step& step, G4VProcess* ptr);
0148
0149   inline void SelectEmProcess(const G4Step&, G4VEmProcess*);
0150
0151   void SelectHadProcess(const G4Track&, const G4Step&, G4HadronicProcess*);
0152
0153   // It returns the cross section per volume for energy/ material
0154   G4double TotalCrossSectionPerVolume();
0155
0156 private:
0157
0158   G4bool RetrieveTable(G4VEmProcess*, const G4String& directory,
0159                        G4bool ascii);
0160
0161 protected:
0162
0163   G4HadronicProcess*           theGammaNuclear = nullptr;
0164   G4VProcess*                  selectedProc = nullptr;
0165
0166   G4double                     preStepLogE = 1.0;
0167   G4double                     factor = 1.0;
0168
0169
0170 private:
0171   static G4EmDataHandler*      theHandler;
0172   static const size_t          nTables = 15;
0173   static G4bool                theT[nTables];
0174   static G4String              nameT[nTables];
0175
0176   G4VEmProcess*                thePhotoElectric = nullptr;
0177   G4VEmProcess*                theCompton = nullptr;
0178   G4VEmProcess*                theConversionEE = nullptr;
0179   G4VEmProcess*                theRayleigh = nullptr;
0180   G4GammaConversionToMuons*    theConversionMM = nullptr;
0181
0182   G4double                     minPEEnergy;
0183   G4double                     minEEEnergy;
0184   G4double                     minMMEnergy;
0185   G4double                     peLambda = 0.0;
0186
0187   size_t                       nLowE = 40;
0188   size_t                       nHighE = 50;
0189   size_t                       idxEnergy = 0;
0190 };
0191
0192 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0193
0194 inline G4double
0195 G4GammaGeneralProcess::ComputeGeneralLambda(size_t idxe, size_t idxt)
0196 {
0197   idxEnergy = idxe;
0198   return factor*theHandler->GetVector(idxt, basedCoupleIndex)
0199     ->LogVectorValue(preStepKinEnergy, preStepLogE);
0200 }
0201
0202 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0203
0204 inline G4double G4GammaGeneralProcess::GetProbability(size_t idxt)
0205 {
0206   return theHandler->GetVector(idxt, basedCoupleIndex)
0207     ->LogVectorValue(preStepKinEnergy, preStepLogE);
0208 }
0209
0210 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0211
0212 inline void
0213 G4GammaGeneralProcess::SelectedProcess(const G4Step& step, G4VProcess* ptr)
0214 {
0215   selectedProc = ptr;
0216   step.GetPostStepPoint()->SetProcessDefinedStep(ptr);
0217 }
0218
0219 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0220
0221 inline void G4GammaGeneralProcess::SelectEmProcess(const G4Step& step, G4VEmProcess* proc)
0222 {
0223   proc->CurrentSetup(currentCouple, preStepKinEnergy);
0224   SelectedProcess(step, proc);
0225 }
0226
0227 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0228
0229 inline const G4VProcess* G4GammaGeneralProcess::GetSelectedProcess() const
0230 {
0231   return selectedProc;
0232 }
0233
0234
0235 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0236
0237 inline G4HadronicProcess* G4GammaGeneralProcess::GetGammaNuclear() const
0238 {
0239   return theGammaNuclear;
0240 }
0241
0242 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0243
0244 #endif