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27 // -------------------------------------------------------------------
28 //
29 // GEANT4 Class header file
30 //
31 //
32 // File name: G4GammaGeneralProcess
33 //
34 // Author: Vladimir Ivanchenko
35 //
36 // Creation date: 19.07.2018
37 //
38 // Modifications:
39 //
40 // Class Description:
41 //
42 // It is the gamma super process
43
44 // -------------------------------------------------------------------
45 //
46
47 #ifndef G4GammaGeneralProcess_h
48 #define G4GammaGeneralProcess_h 1
49
50 #include "G4VEmProcess.hh"
51 #include "globals.hh"
52 #include "G4EmDataHandler.hh"
53
54 class G4Step;
55 class G4Track;
56 class G4ParticleDefinition;
57 class G4VParticleChange;
58 class G4GammaConversionToMuons;
59 class G4HadronicProcess;
60 class G4MaterialCutsCouple;
61
62 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
63
64 class G4GammaGeneralProcess : public G4VEmProcess
65 {
66 public:
67
68 explicit G4GammaGeneralProcess(const G4String& pname="GammaGeneralProc");
69
70 ~G4GammaGeneralProcess() override;
71
72 G4bool IsApplicable(const G4ParticleDefinition&) override;
73
74 void AddEmProcess(G4VEmProcess*);
75
76 void AddMMProcess(G4GammaConversionToMuons*);
77
78 void AddHadProcess(G4HadronicProcess*);
79
80 void ProcessDescription(std::ostream& outFile) const override;
81
82 protected:
83
84 void InitialiseProcess(const G4ParticleDefinition*) override;
85
86 public:
87
88 // Initialise for build of tables
89 void PreparePhysicsTable(const G4ParticleDefinition&) override;
90
91 // Build physics table during initialisation
92 void BuildPhysicsTable(const G4ParticleDefinition&) override;
93
94 // Called before tracking of each new G4Track
95 void StartTracking(G4Track*) override;
96
97 // implementation of virtual method, specific for G4GammaGeneralProcess
98 G4double PostStepGetPhysicalInteractionLength(
99 const G4Track& track,
100 G4double previousStepSize,
101 G4ForceCondition* condition) override;
102
103 // implementation of virtual method, specific for G4GammaGeneralProcess
104 G4VParticleChange* PostStepDoIt(const G4Track&, const G4Step&) override;
105
106 // Store PhysicsTable in a file.
107 // Return false in case of failure at I/O
108 G4bool StorePhysicsTable(const G4ParticleDefinition*,
109 const G4String& directory,
110 G4bool ascii = false) override;
111
112 // Retrieve Physics from a file.
113 // (return true if the Physics Table can be build by using file)
114 // (return false if the process has no functionality or in case of failure)
115 // File name should is constructed as processName+particleName and the
116 // should be placed under the directory specifed by the argument.
117 G4bool RetrievePhysicsTable(const G4ParticleDefinition*,
118 const G4String& directory,
119 G4bool ascii) override;
120
121 // Return sub-process limiting current step
122 const G4VProcess* GetCreatorProcess() const override;
123 inline const G4VProcess* GetSelectedProcess() const;
124
125 // Temporary methods
126 const G4String& GetSubProcessName() const;
127 G4int GetSubProcessSubType() const;
128
129 G4VEmProcess* GetEmProcess(const G4String& name) override;
130
131 inline G4HadronicProcess* GetGammaNuclear() const;
132
133 // hide copy constructor and assignment operator
134 G4GammaGeneralProcess(G4GammaGeneralProcess &) = delete;
135 G4GammaGeneralProcess & operator=
136 (const G4GammaGeneralProcess &right) = delete;
137
138 protected:
139
140 G4double GetMeanFreePath(const G4Track& track, G4double previousStepSize,
141 G4ForceCondition* condition) override;
142
143 inline G4double ComputeGeneralLambda(std::size_t idxe, std::size_t idxt);
144
145 inline G4double GetProbability(std::size_t idxt);
146
147 inline void SelectedProcess(const G4Step& step, G4VProcess* ptr);
148
149 inline void SelectEmProcess(const G4Step&, G4VEmProcess*);
150
151 void SelectHadProcess(const G4Track&, const G4Step&, G4HadronicProcess*);
152
153 // It returns the cross section per volume for energy/ material
154 G4double TotalCrossSectionPerVolume();
155
156 private:
157
158 G4bool RetrieveTable(G4VEmProcess*, const G4String& directory,
159 G4bool ascii);
160
161 protected:
162
163 G4HadronicProcess* theGammaNuclear = nullptr;
164 G4VProcess* selectedProc = nullptr;
165
166 G4double preStepLogE = 1.0;
167 G4double factor = 1.0;
168
169
170 private:
171 static G4EmDataHandler* theHandler;
172 static const std::size_t nTables = 15;
173 static G4bool theT[nTables];
174 static G4String nameT[nTables];
175
176 G4VEmProcess* thePhotoElectric = nullptr;
177 G4VEmProcess* theCompton = nullptr;
178 G4VEmProcess* theConversionEE = nullptr;
179 G4VEmProcess* theRayleigh = nullptr;
180 G4GammaConversionToMuons* theConversionMM = nullptr;
181
182 G4double minPEEnergy;
183 G4double minEEEnergy;
184 G4double minMMEnergy;
185 G4double peLambda = 0.0;
186
187 std::size_t nLowE = 40;
188 std::size_t nHighE = 50;
189 std::size_t idxEnergy = 0;
190 };
191
192 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
193
194 inline G4double
195 G4GammaGeneralProcess::ComputeGeneralLambda(std::size_t idxe, std::size_t idxt)
196 {
197 idxEnergy = idxe;
198 return factor*theHandler->GetVector(idxt, basedCoupleIndex)
199 ->LogVectorValue(preStepKinEnergy, preStepLogE);
200 }
201
202 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
203
204 inline G4double G4GammaGeneralProcess::GetProbability(std::size_t idxt)
205 {
206 return theHandler->GetVector(idxt, basedCoupleIndex)
207 ->LogVectorValue(preStepKinEnergy, preStepLogE);
208 }
209
210 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
211
212 inline void
213 G4GammaGeneralProcess::SelectedProcess(const G4Step& step, G4VProcess* ptr)
214 {
215 selectedProc = ptr;
216 step.GetPostStepPoint()->SetProcessDefinedStep(ptr);
217 }
218
219 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
220
221 inline void
222 G4GammaGeneralProcess::SelectEmProcess(const G4Step& step, G4VEmProcess* proc)
223 {
224 proc->CurrentSetup(currentCouple, preStepKinEnergy);
225 SelectedProcess(step, proc);
226 }
227
228 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
229
230 inline const G4VProcess* G4GammaGeneralProcess::GetSelectedProcess() const
231 {
232 return selectedProc;
233 }
234
235
236 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
237
238 inline G4HadronicProcess* G4GammaGeneralProcess::GetGammaNuclear() const
239 {
240 return theGammaNuclear;
241 }
242
243 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
244
245 #endif
246