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25 // 25 //
>> 26 // $Id: G4EnergyLossForExtrapolator.hh,v 1.8 2007/05/29 04:43:31 vnivanch Exp $
>> 27 // GEANT4 tag $Name: geant4-09-00 $
26 // 28 //
27 //-------------------------------------------- 29 //---------------------------------------------------------------------------
28 // 30 //
29 // ClassName: G4EnergyLossForExtrapolator 31 // ClassName: G4EnergyLossForExtrapolator
30 // 32 //
31 // Description: This class provide calculatio 33 // Description: This class provide calculation of energy loss, fluctuation,
32 // and msc angle 34 // and msc angle
33 // 35 //
34 // Author: 09.12.04 V.Ivanchenko 36 // Author: 09.12.04 V.Ivanchenko
35 // 37 //
36 // Modification: 38 // Modification:
37 // 08-04-05 Rename Propogator -> Extrapolator 39 // 08-04-05 Rename Propogator -> Extrapolator
38 // 16-03-06 Add muon tables 40 // 16-03-06 Add muon tables
39 // 21-03-06 Add verbosity defined in the const 41 // 21-03-06 Add verbosity defined in the constructor and Initialisation
40 // start only when first public metho 42 // start only when first public method is called (V.Ivanchenko)
41 // 03-05-06 Remove unused pointer G4Material* 43 // 03-05-06 Remove unused pointer G4Material* from number of methods (VI)
42 // 28-07-07 Add maxEnergyTransfer for computat <<
43 // 44 //
44 //-------------------------------------------- 45 //----------------------------------------------------------------------------
45 // 46 //
46 47
47 //....oooOO0OOooo........oooOO0OOooo........oo 48 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
48 49
49 #ifndef G4EnergyLossForExtrapolator_h 50 #ifndef G4EnergyLossForExtrapolator_h
50 #define G4EnergyLossForExtrapolator_h 1 51 #define G4EnergyLossForExtrapolator_h 1
51 52
52 #include <vector> <<
53 #include <CLHEP/Units/PhysicalConstants.h> <<
54 53
55 #include "globals.hh" 54 #include "globals.hh"
56 #include "G4PhysicsTable.hh" 55 #include "G4PhysicsTable.hh"
57 #include "G4TablesForExtrapolator.hh" << 56 #include <vector>
58 #include "G4Log.hh" <<
59 #include "G4Threading.hh" <<
60 57
61 class G4ParticleDefinition; 58 class G4ParticleDefinition;
62 class G4Material; 59 class G4Material;
63 class G4MaterialCutsCouple; 60 class G4MaterialCutsCouple;
>> 61 class G4ProductionCuts;
64 62
65 //....oooOO0OOooo........oooOO0OOooo........oo 63 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
66 64
67 class G4EnergyLossForExtrapolator 65 class G4EnergyLossForExtrapolator
68 { 66 {
69 public: 67 public:
70 << 68 G4EnergyLossForExtrapolator(G4int verb = 1);
71 explicit G4EnergyLossForExtrapolator(G4int v <<
72 69
73 ~G4EnergyLossForExtrapolator(); 70 ~G4EnergyLossForExtrapolator();
74 71
75 void Initialisation(); << 72 G4double ComputeDEDX(G4double kinEnergy, const G4ParticleDefinition*);
76 <<
77 G4double ComputeDEDX(G4double kinEnergy, con <<
78 const G4Material*); <<
79 73
80 G4double ComputeRange(G4double kinEnergy, co << 74 G4double ComputeRange(G4double kinEnergy, const G4ParticleDefinition*);
81 const G4Material*); <<
82 75
83 G4double ComputeEnergy(G4double range, const << 76 G4double ComputeEnergy(G4double range, const G4ParticleDefinition*);
84 const G4Material*); <<
85 77
86 G4double EnergyAfterStep(G4double kinEnergy, 78 G4double EnergyAfterStep(G4double kinEnergy, G4double step,
87 const G4Material*, const G4ParticleDe 79 const G4Material*, const G4ParticleDefinition*);
88 80
89 G4double EnergyBeforeStep(G4double kinEnergy 81 G4double EnergyBeforeStep(G4double kinEnergy, G4double step,
90 const G4Material*, const G4Par << 82 const G4Material*, const G4ParticleDefinition*);
91 <<
92 G4double TrueStepLength(G4double kinEnergy, <<
93 const G4Material*, const G4ParticleDef <<
94 83
95 inline G4double EnergyAfterStep(G4double kin 84 inline G4double EnergyAfterStep(G4double kinEnergy, G4double step,
96 const G4Material*, << 85 const G4Material*, const G4String& particleName);
97 const G4Stri <<
98 86
99 inline G4double EnergyBeforeStep(G4double ki 87 inline G4double EnergyBeforeStep(G4double kinEnergy, G4double step,
100 const G4Material*, << 88 const G4Material*, const G4String& particleName);
101 const G4Str <<
102 89
103 G4double AverageScatteringAngle(G4double kin << 90 inline G4double AverageScatteringAngle(G4double kinEnergy, G4double step,
104 const G4Material*, << 91 const G4Material*, const G4ParticleDefinition* part);
105 const G4ParticleDefinition* part); <<
106 92
107 inline G4double AverageScatteringAngle(G4dou 93 inline G4double AverageScatteringAngle(G4double kinEnergy, G4double step,
108 const G4Material*, << 94 const G4Material*, const G4String& particleName);
109 const G4String& particleName); <<
110 95
111 inline G4double ComputeTrueStep(const G4Mate << 96 inline G4double EnergyDispersion(G4double kinEnergy, G4double step,
112 const G4ParticleDefinition* part, << 97 const G4Material*, const G4ParticleDefinition*);
113 G4double kinEnergy, G4double stepLen <<
114 <<
115 G4double EnergyDispersion(G4double kinEnergy <<
116 const G4Material*, <<
117 const G4ParticleDefinition*); <<
118 98
119 inline G4double EnergyDispersion(G4double ki 99 inline G4double EnergyDispersion(G4double kinEnergy, G4double step,
120 const G4Material*, << 100 const G4Material*, const G4String& particleName);
121 const G4Str <<
122 101
123 inline void SetVerbose(G4int val); 102 inline void SetVerbose(G4int val);
124 103
125 inline void SetMinKinEnergy(G4double); 104 inline void SetMinKinEnergy(G4double);
126 105
127 inline void SetMaxKinEnergy(G4double); 106 inline void SetMaxKinEnergy(G4double);
128 <<
129 inline void SetMaxEnergyTransfer(G4double); <<
130 <<
131 // hide assignment operator <<
132 G4EnergyLossForExtrapolator & operator= <<
133 (const G4EnergyLossForExtrapolator &right) = <<
134 G4EnergyLossForExtrapolator(const G4EnergyLo <<
135 107
136 private: 108 private:
137 109
138 G4bool SetupKinematics(const G4ParticleDefin << 110 void Initialisation();
139 G4double kinEnergy); << 111
>> 112 G4PhysicsTable* PrepareTable();
140 113
141 const G4ParticleDefinition* FindParticle(con 114 const G4ParticleDefinition* FindParticle(const G4String& name);
142 115
143 inline G4double ComputeValue(G4double x, con << 116 void ComputeElectronDEDX(const G4ParticleDefinition* part, G4PhysicsTable* table);
144 size_t idxMat); <<
145 117
146 inline const G4PhysicsTable* GetPhysicsTable << 118 void ComputeMuonDEDX(const G4ParticleDefinition* part, G4PhysicsTable* table);
147 119
148 #ifdef G4MULTITHREADED << 120 void ComputeProtonDEDX(const G4ParticleDefinition* part, G4PhysicsTable* table);
149 static G4Mutex extrMutex; <<
150 #endif <<
151 static G4TablesForExtrapolator* tables; <<
152 <<
153 const G4ParticleDefinition* currentParticle <<
154 const G4ParticleDefinition* electron = nullp <<
155 const G4ParticleDefinition* positron = nullp <<
156 const G4ParticleDefinition* muonPlus = nullp <<
157 const G4ParticleDefinition* muonMinus= nullp <<
158 const G4ParticleDefinition* proton = nullptr <<
159 const G4Material* currentMaterial = nullptr; <<
160 <<
161 G4double electronDensity = 0.0; <<
162 G4double radLength = 0.0; <<
163 G4double charge2 = 0.0; <<
164 G4double kineticEnergy = 0.0; <<
165 G4double gam = 1.0; <<
166 G4double bg2 = 0.0; <<
167 G4double beta2 = 0.0; <<
168 G4double tmax = 0.0; <<
169 <<
170 G4double linLossLimit = 0.01; <<
171 G4double emin = 0.0; <<
172 G4double emax = 0.0; <<
173 G4double maxEnergyTransfer = 0.0; <<
174 <<
175 size_t index = 0; <<
176 size_t nmat = 0; <<
177 G4int nbins = 80; <<
178 G4int verbose = 0; <<
179 121
180 G4bool isMaster = false; << 122 G4double ComputeTrueStep(const G4Material*, const G4ParticleDefinition* part,
181 }; << 123 G4double kinEnergy, G4double stepLength);
182 124
183 //....oooOO0OOooo........oooOO0OOooo........oo << 125 inline G4double ComputeValue(G4double x, const G4PhysicsTable* table);
184 126
185 inline const G4PhysicsTable* << 127 inline G4double ComputeScatteringAngle(G4double x);
186 G4EnergyLossForExtrapolator::GetPhysicsTable(E << 128
187 { << 129 // hide assignment operator
188 return tables->GetPhysicsTable(type); << 130 G4EnergyLossForExtrapolator & operator=(const G4EnergyLossForExtrapolator &right);
189 } << 131 G4EnergyLossForExtrapolator(const G4EnergyLossForExtrapolator&);
>> 132
>> 133 const G4ParticleDefinition* currentParticle;
>> 134 const G4ParticleDefinition* electron;
>> 135 const G4ParticleDefinition* positron;
>> 136 const G4ParticleDefinition* muonPlus;
>> 137 const G4ParticleDefinition* muonMinus;
>> 138 const G4ParticleDefinition* proton;
>> 139
>> 140 G4ProductionCuts* cuts;
>> 141 std::vector<const G4MaterialCutsCouple*> couples;
>> 142
>> 143 G4String currentParticleName;
>> 144
>> 145 G4PhysicsTable* dedxElectron;
>> 146 G4PhysicsTable* dedxPositron;
>> 147 G4PhysicsTable* dedxMuon;
>> 148 G4PhysicsTable* dedxProton;
>> 149 G4PhysicsTable* rangeElectron;
>> 150 G4PhysicsTable* rangePositron;
>> 151 G4PhysicsTable* rangeMuon;
>> 152 G4PhysicsTable* rangeProton;
>> 153 G4PhysicsTable* invRangeElectron;
>> 154 G4PhysicsTable* invRangePositron;
>> 155 G4PhysicsTable* invRangeMuon;
>> 156 G4PhysicsTable* invRangeProton;
>> 157
>> 158 const G4Material* currentMaterial;
>> 159 G4int index;
>> 160 G4double electronDensity;
>> 161 G4double radLength;
>> 162 G4double mass;
>> 163 G4double charge2;
>> 164 G4double kineticEnergy;
>> 165 G4double gam;
>> 166 G4double bg2;
>> 167 G4double beta2;
>> 168 G4double tmax;
>> 169
>> 170 G4double linLossLimit;
>> 171 G4double emin;
>> 172 G4double emax;
>> 173 G4int nbins;
>> 174 G4int nmat;
>> 175 G4int verbose;
>> 176 G4bool isInitialised;
>> 177 };
190 178
191 //....oooOO0OOooo........oooOO0OOooo........oo 179 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
192 180
193 inline G4double << 181 inline G4double G4EnergyLossForExtrapolator::EnergyAfterStep(G4double kinEnergy,
194 G4EnergyLossForExtrapolator::EnergyAfterStep(G << 182 G4double step,
195 G4double step, << 183 const G4Material* mat,
196 const G4Material* mat, << 184 const G4String& name)
197 const G4String& name) <<
198 { 185 {
199 return EnergyAfterStep(kinEnergy,step,mat,Fi 186 return EnergyAfterStep(kinEnergy,step,mat,FindParticle(name));
200 } 187 }
201 188
202 //....oooOO0OOooo........oooOO0OOooo........oo 189 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
203 190
204 inline G4double << 191 inline G4double G4EnergyLossForExtrapolator::EnergyBeforeStep(G4double kinEnergy,
205 G4EnergyLossForExtrapolator::EnergyBeforeStep( << 192 G4double step,
206 G4double step, << 193 const G4Material* mat,
207 const G4Material* mat, << 194 const G4String& name)
208 const G4String& name) <<
209 { 195 {
210 return EnergyBeforeStep(kinEnergy,step,mat,F 196 return EnergyBeforeStep(kinEnergy,step,mat,FindParticle(name));
211 } 197 }
212 198
213 //....oooOO0OOooo........oooOO0OOooo........oo 199 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
214 200
215 inline G4double << 201 inline G4double G4EnergyLossForExtrapolator::AverageScatteringAngle(G4double kinEnergy,
216 G4EnergyLossForExtrapolator::AverageScattering << 202 G4double step,
217 G4double step, << 203 const G4Material* mat,
218 const G4Material* mat, << 204 const G4String& name)
219 const G4String& name) <<
220 { 205 {
221 return AverageScatteringAngle(kinEnergy,step 206 return AverageScatteringAngle(kinEnergy,step,mat,FindParticle(name));
222 } 207 }
223 208
224 //....oooOO0OOooo........oooOO0OOooo........oo 209 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
225 210
226 inline G4double << 211 inline G4double G4EnergyLossForExtrapolator::EnergyDispersion(G4double kinEnergy,
227 G4EnergyLossForExtrapolator::EnergyDispersion( << 212 G4double step,
228 G4double step, << 213 const G4Material* mat,
229 const G4Material* mat, << 214 const G4String& name)
230 const G4String& name) <<
231 { 215 {
232 return EnergyDispersion(kinEnergy,step,mat,F 216 return EnergyDispersion(kinEnergy,step,mat,FindParticle(name));
233 } 217 }
234 218
235 //....oooOO0OOooo........oooOO0OOooo........oo 219 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
236 220
237 inline G4double << 221 inline G4double G4EnergyLossForExtrapolator::AverageScatteringAngle(G4double kinEnergy,
238 G4EnergyLossForExtrapolator::ComputeTrueStep(c << 222 G4double stepLength,
239 const G4ParticleDefinition* par << 223 const G4Material* mat,
240 G4double kinEnergy, << 224 const G4ParticleDefinition* part)
241 G4double stepLength) << 225 {
>> 226 if(!isInitialised) Initialisation();
>> 227 G4double theta = 0.0;
>> 228 if(mat && part && kinEnergy > 0.0) {
>> 229 G4double step = ComputeTrueStep(mat,part,kinEnergy,stepLength);
>> 230 if(step > 0.001*radLength) theta = ComputeScatteringAngle(stepLength);
>> 231 }
>> 232 return theta;
>> 233 }
>> 234
>> 235 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 236
>> 237 inline G4double G4EnergyLossForExtrapolator::ComputeScatteringAngle(G4double x)
242 { 238 {
243 G4double theta = AverageScatteringAngle(kinE << 239 G4double t = x/radLength;
244 return stepLength*std::sqrt(1.0 + 0.625*thet << 240 return 19.23*MeV*std::sqrt(charge2*t)*(1.0 + 0.038*std::log(t))/(beta2*gam*mass);
245 } << 241 }
>> 242
>> 243 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 244
>> 245 inline G4double G4EnergyLossForExtrapolator::EnergyDispersion(G4double kinEnergy,
>> 246 G4double stepLength,
>> 247 const G4Material* mat,
>> 248 const G4ParticleDefinition* part)
>> 249 {
>> 250 if(!isInitialised) Initialisation();
>> 251 G4double sig2 = 0.0;
>> 252 if(mat && part ) {
>> 253 G4double step = ComputeTrueStep(mat,part,kinEnergy,stepLength);
>> 254 sig2 = (1.0/beta2 - 0.5)* twopi_mc2_rcl2 * tmax*step * electronDensity * charge2;
>> 255 }
>> 256 return sig2;
>> 257 }
246 258
247 //....oooOO0OOooo........oooOO0OOooo........oo 259 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
248 260
249 inline G4double << 261 inline G4double G4EnergyLossForExtrapolator::ComputeValue(G4double x,
250 G4EnergyLossForExtrapolator::ComputeValue(G4do << 262 const G4PhysicsTable* table)
251 const G4PhysicsTable* table, <<
252 size_t idxMat) <<
253 { 263 {
254 return (nullptr != table) ? ((*table)[idxMat << 264 G4double res = 0.0;
>> 265 bool b;
>> 266 res = ((*table)[index])->GetValue(x, b);
>> 267 return res;
255 } 268 }
256 269
257 //....oooOO0OOooo........oooOO0OOooo........oo 270 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
258 271
259 inline void G4EnergyLossForExtrapolator::SetVe 272 inline void G4EnergyLossForExtrapolator::SetVerbose(G4int val)
260 { 273 {
261 verbose = val; 274 verbose = val;
262 } 275 }
263 276
264 //....oooOO0OOooo........oooOO0OOooo........oo 277 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
265 278
266 inline void G4EnergyLossForExtrapolator::SetMi 279 inline void G4EnergyLossForExtrapolator::SetMinKinEnergy(G4double val)
267 { 280 {
268 emin = val; 281 emin = val;
269 } 282 }
270 283
271 //....oooOO0OOooo........oooOO0OOooo........oo 284 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
272 285
273 inline void G4EnergyLossForExtrapolator::SetMa 286 inline void G4EnergyLossForExtrapolator::SetMaxKinEnergy(G4double val)
274 { 287 {
275 emax = val; 288 emax = val;
276 } <<
277 <<
278 //....oooOO0OOooo........oooOO0OOooo........oo <<
279 <<
280 inline void G4EnergyLossForExtrapolator::SetMa <<
281 { <<
282 maxEnergyTransfer = val; <<
283 } 289 }
284 290
285 //....oooOO0OOooo........oooOO0OOooo........oo 291 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
286 292
287 #endif 293 #endif
288 294
289 295