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24 // ******************************************* 21 // ********************************************************************
25 // 22 //
26 // 23 //
>> 24 // $Id: G4GammaConversion.hh,v 1.10 2002/04/09 17:34:40 vnivanch Exp $
>> 25 // GEANT4 tag $Name: geant4-04-01 $
27 // 26 //
28 // << 27 //------------------ G4GammaConversion physics process -------------------------
29 //------------------ G4GammaConversion physics <<
30 // by Michel Maire, 24 May 1 28 // by Michel Maire, 24 May 1996
31 // 29 //
32 // 11-06-96, Added GetRandomAtom() method and 30 // 11-06-96, Added GetRandomAtom() method and new data member
33 // for cumulative total cross sectio 31 // for cumulative total cross section, by M.Maire
34 // 21-06-96, SetCuts inplementation, M.Maire 32 // 21-06-96, SetCuts inplementation, M.Maire
35 // 16-09-96, Dynamical array PartialSumSigma, 33 // 16-09-96, Dynamical array PartialSumSigma, M.Maire
36 // 14-01-97, crossection table + meanfreepath 34 // 14-01-97, crossection table + meanfreepath table.
37 // PartialSumSigma removed, M.Maire 35 // PartialSumSigma removed, M.Maire
38 // 14-03-97, new physics scheme for geant4alph 36 // 14-03-97, new physics scheme for geant4alpha, M.Maire
39 // 13-08-98, new methods SetBining() PrintInfo 37 // 13-08-98, new methods SetBining() PrintInfo()
40 // 03-08-01, new methods Store/Retrieve Physic 38 // 03-08-01, new methods Store/Retrieve PhysicsTable (mma)
41 // 06-08-01, BuildThePhysicsTable() called fro 39 // 06-08-01, BuildThePhysicsTable() called from constructor (mma)
42 // 19-09-01, come back to previous ProcessName 40 // 19-09-01, come back to previous ProcessName: "conv"
43 // 20-09-01, DoIt: fminimalEnergy = 1*eV (mma) << 41 // 20-09-01, DoIt: fminimalEnergy = 1*eV (mma)
44 // 01-10-01, come back to BuildPhysicsTable(co << 42 // 01-10-01, come back to BuildPhysicsTable(const G4ParticleDefinition&)
45 // 13-08-04, suppress .icc file <<
46 // public ComputeCrossSectionPerAtom <<
47 // 09-11-04, Remove Retrieve tables (V.Ivantch <<
48 // 19-04-05, Redesign - use G4VEmProcess inter <<
49 // 04-05-05, Make class to be default (V.Ivanc <<
50 // 09-08-06, add SetModel(G4VEmModel*) (mma) <<
51 // 12-09-06, move SetModel(G4VEmModel*) in G4V <<
52 // ------------------------------------------- 43 // -----------------------------------------------------------------------------
53 44
54 // class description 45 // class description
55 // 46 //
>> 47 // gamma ---> e+ e-
>> 48 // inherit from G4VDiscreteProcess
>> 49 //
56 50
57 //....oooOO0OOooo........oooOO0OOooo........oo 51 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
58 //....oooOO0OOooo........oooOO0OOooo........oo 52 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
59 53
60 #ifndef G4GammaConversion_h 54 #ifndef G4GammaConversion_h
61 #define G4GammaConversion_h 1 55 #define G4GammaConversion_h 1
62 56
>> 57 #include "G4ios.hh"
63 #include "globals.hh" 58 #include "globals.hh"
64 #include "G4VEmProcess.hh" << 59 #include "Randomize.hh"
65 #include "G4Gamma.hh" << 60 #include "G4VDiscreteProcess.hh"
>> 61 #include "G4PhysicsTable.hh"
>> 62 #include "G4PhysicsLogVector.hh"
>> 63 #include "G4Element.hh"
>> 64 #include "G4Gamma.hh"
>> 65 #include "G4Electron.hh"
>> 66 #include "G4Positron.hh"
>> 67 #include "G4Step.hh"
66 68
67 //....oooOO0OOooo........oooOO0OOooo........oo 69 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 70
>> 71 class G4GammaConversion : public G4VDiscreteProcess
>> 72
>> 73 {
>> 74 public: // with description
>> 75
>> 76 G4GammaConversion(const G4String& processName ="conv");
>> 77
>> 78 ~G4GammaConversion();
>> 79
>> 80 G4bool IsApplicable(const G4ParticleDefinition&);
>> 81 // true for Gamma only.
>> 82
>> 83 void SetPhysicsTableBining(G4double lowE, G4double highE, G4int nBins);
>> 84 // Allows to define the binning of the PhysicsTables,
>> 85 // before to build them.
>> 86
>> 87 void BuildPhysicsTable(const G4ParticleDefinition&);
>> 88 // It builds the total CrossSectionPerAtom table, for Gamma,
>> 89 // and for every element contained in the elementTable.
>> 90 // It builds the MeanFreePath table, for Gamma,
>> 91 // and for every material contained in the materialTable.
>> 92
>> 93 G4bool StorePhysicsTable(G4ParticleDefinition* ,
>> 94 const G4String& directory, G4bool);
>> 95 // store CrossSection and MeanFreePath tables into an external file
>> 96 // specified by 'directory' (must exist before invokation)
>> 97
>> 98 G4bool RetrievePhysicsTable(G4ParticleDefinition* ,
>> 99 const G4String& directory, G4bool);
>> 100 // retrieve CrossSection and MeanFreePath tables from an external file
>> 101 // specified by 'directory'
>> 102
>> 103 void PrintInfoDefinition();
>> 104 // Print few lines of informations about the process: validity range,
>> 105 // origine ..etc..
>> 106 // Invoked by BuildThePhysicsTable().
>> 107
>> 108 G4double GetMeanFreePath(const G4Track& aTrack,
>> 109 G4double previousStepSize,
>> 110 G4ForceCondition* condition);
>> 111 // It returns the MeanFreePath of the process for the current track :
>> 112 // (energy, material)
>> 113 // The previousStepSize and G4ForceCondition* are not used.
>> 114 // This function overloads a virtual function of the base class.
>> 115 // It is invoked by the ProcessManager of the Particle.
>> 116
>> 117 G4double GetCrossSectionPerAtom(const G4DynamicParticle* aDynamicGamma,
>> 118 G4Element* anElement);
>> 119 // It returns the total CrossSectionPerAtom of the process,
>> 120 // for the current DynamicGamma (energy), in anElement.
>> 121
>> 122 G4VParticleChange* PostStepDoIt(const G4Track& aTrack,
>> 123 const G4Step& aStep);
>> 124 // It computes the final state of the process (at end of step),
>> 125 // returned as a ParticleChange object.
>> 126 // This function overloads a virtual function of the base class.
>> 127 // It is invoked by the ProcessManager of the Particle.
>> 128
>> 129 protected:
>> 130
>> 131 virtual G4double ComputeCrossSectionPerAtom(G4double GammaEnergy,
>> 132 G4double AtomicNumber);
>> 133
>> 134 virtual G4double ComputeMeanFreePath (G4double GammaEnergy,
>> 135 G4Material* aMaterial);
68 136
69 class G4ParticleDefinition; << 137 private:
70 class G4VEmModel; <<
71 class G4MaterialCutsCouple; <<
72 class G4DynamicParticle; <<
73 <<
74 class G4GammaConversion : public G4VEmProcess <<
75 <<
76 { <<
77 public: // with description <<
78 <<
79 explicit G4GammaConversion(const G4String& p <<
80 G4ProcessType type = fElectromagnet <<
81 <<
82 ~G4GammaConversion() override; <<
83 <<
84 // true for Gamma only. <<
85 G4bool IsApplicable(const G4ParticleDefiniti <<
86 <<
87 G4double MinPrimaryEnergy(const G4ParticleDe <<
88 const G4Material*) override; <<
89 <<
90 // print documentation in html format <<
91 void ProcessDescription(std::ostream&) const <<
92 <<
93 G4GammaConversion & operator=(const G4Gamma <<
94 G4GammaConversion(const G4GammaConversion&) <<
95 138
96 protected: << 139 G4Element* SelectRandomAtom(const G4DynamicParticle* aDynamicGamma,
>> 140 G4Material* aMaterial);
97 141
98 virtual void InitialiseProcess(const G4Parti << 142 G4double ScreenFunction1(G4double ScreenVariable);
99 143
100 private: << 144 G4double ScreenFunction2(G4double ScreenVariable);
>> 145
>> 146 private:
>> 147
>> 148 // hide assignment operator as private
>> 149 G4GammaConversion& operator=(const G4GammaConversion &right);
>> 150 G4GammaConversion(const G4GammaConversion& );
101 151
102 G4bool isInitialised = false; << 152 private:
>> 153
>> 154 G4PhysicsTable* theCrossSectionTable; // table for crossection
>> 155 G4PhysicsTable* theMeanFreePathTable;
>> 156
>> 157 G4double LowestEnergyLimit ; // low energy limit of the tables
>> 158 G4double HighestEnergyLimit ; // high energy limit of the tables
>> 159 G4int NumbBinTable ; // number of bins in the tables
>> 160
>> 161 G4double fminimalEnergy; // minimalEnergy of produced particles
>> 162
>> 163 G4double MeanFreePath; // actual MeanFreePath (current medium)
103 }; 164 };
104 165
105 //....oooOO0OOooo........oooOO0OOooo........oo 166 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 167
>> 168 #include "G4GammaConversion.icc"
106 169
107 #endif 170 #endif
108 171
109 172