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26 // 26 //
>> 27 // $Id: G4OpBoundaryProcess.hh,v 1.22 2009/11/20 01:06:45 gum Exp $
>> 28 // GEANT4 tag $Name: geant4-09-03 $
27 // 29 //
28 // << 30 //
29 ////////////////////////////////////////////// 31 ////////////////////////////////////////////////////////////////////////
30 // Optical Photon Boundary Process Class Defin 32 // Optical Photon Boundary Process Class Definition
31 ////////////////////////////////////////////// 33 ////////////////////////////////////////////////////////////////////////
32 // 34 //
33 // File: G4OpBoundaryProcess.hh 35 // File: G4OpBoundaryProcess.hh
34 // Description: Discrete Process -- reflection 36 // Description: Discrete Process -- reflection/refraction at
35 // optical in 37 // optical interfaces
36 // Version: 1.1 38 // Version: 1.1
37 // Created: 1997-06-18 39 // Created: 1997-06-18
38 // Modified: 2005-07-28 add G4ProcessType t 40 // Modified: 2005-07-28 add G4ProcessType to constructor
39 // 1999-10-29 add method and clas 41 // 1999-10-29 add method and class descriptors
40 // 1999-10-10 - Fill NewMomentum/ << 42 // 1999-10-10 - Fill NewMomentum/NewPolarization in
41 // DoAbsorption. The 43 // DoAbsorption. These members need to be
42 // filled since DoIt << 44 // filled since DoIt calls
43 // aParticleChange.S 45 // aParticleChange.SetMomentumChange etc.
44 // upon return (than 46 // upon return (thanks to: Clark McGrew)
45 // 2006-11-04 - add capability of 47 // 2006-11-04 - add capability of calculating the reflectivity
46 // off a metal surfa 48 // off a metal surface by way of a complex index
47 // of refraction - T 49 // of refraction - Thanks to Sehwook Lee and John
48 // Hauptman (Dept. o 50 // Hauptman (Dept. of Physics - Iowa State Univ.)
49 // 2009-11-10 - add capability of 51 // 2009-11-10 - add capability of simulating surface reflections
50 // with Look-Up-Tabl 52 // with Look-Up-Tables (LUT) containing measured
51 // optical reflectan 53 // optical reflectance for a variety of surface
52 // treatments - Than 54 // treatments - Thanks to Martin Janecek and
53 // William Moses (La 55 // William Moses (Lawrence Berkeley National Lab.)
54 // 2013-06-01 - add the capabilit <<
55 // of a dichronic fi <<
56 // 2017-02-24 - add capability of <<
57 // with Look-Up-Tabl <<
58 // 56 //
59 // Author: Peter Gumplinger 57 // Author: Peter Gumplinger
60 // adopted from work by Werner Ke 58 // adopted from work by Werner Keil - April 2/96
>> 59 // mail: gum@triumf.ca
61 // 60 //
62 ////////////////////////////////////////////// 61 ////////////////////////////////////////////////////////////////////////
63 62
64 #ifndef G4OpBoundaryProcess_h 63 #ifndef G4OpBoundaryProcess_h
65 #define G4OpBoundaryProcess_h 1 64 #define G4OpBoundaryProcess_h 1
66 65
67 #include "G4OpticalPhoton.hh" << 66 /////////////
68 #include "G4OpticalSurface.hh" << 67 // Includes
>> 68 /////////////
>> 69
>> 70 #include "globals.hh"
>> 71 #include "templates.hh"
>> 72 #include "geomdefs.hh"
>> 73 #include "Randomize.hh"
>> 74
69 #include "G4RandomTools.hh" 75 #include "G4RandomTools.hh"
>> 76 #include "G4RandomDirection.hh"
>> 77
>> 78 #include "G4Step.hh"
70 #include "G4VDiscreteProcess.hh" 79 #include "G4VDiscreteProcess.hh"
>> 80 #include "G4DynamicParticle.hh"
>> 81 #include "G4Material.hh"
>> 82 #include "G4LogicalBorderSurface.hh"
>> 83 #include "G4LogicalSkinSurface.hh"
>> 84 #include "G4OpticalSurface.hh"
>> 85 #include "G4OpticalPhoton.hh"
>> 86 #include "G4TransportationManager.hh"
71 87
72 enum G4OpBoundaryProcessStatus << 88 // Class Description:
73 { << 89 // Discrete Process -- reflection/refraction at optical interfaces.
74 Undefined, << 90 // Class inherits publicly from G4VDiscreteProcess.
75 Transmission, << 91 // Class Description - End:
76 FresnelRefraction, << 92
77 FresnelReflection, << 93 /////////////////////
78 TotalInternalReflection, << 94 // Class Definition
79 LambertianReflection, << 95 /////////////////////
80 LobeReflection, << 96
81 SpikeReflection, << 97 enum G4OpBoundaryProcessStatus { Undefined,
82 BackScattering, << 98 FresnelRefraction, FresnelReflection,
83 Absorption, << 99 TotalInternalReflection,
84 Detection, << 100 LambertianReflection, LobeReflection,
85 NotAtBoundary, << 101 SpikeReflection, BackScattering,
86 SameMaterial, << 102 Absorption, Detection, NotAtBoundary,
87 StepTooSmall, << 103 SameMaterial, StepTooSmall, NoRINDEX,
88 NoRINDEX, << 104 PolishedLumirrorAirReflection,
89 PolishedLumirrorAirReflection, << 105 PolishedLumirrorGlueReflection,
90 PolishedLumirrorGlueReflection, << 106 PolishedAirReflection,
91 PolishedAirReflection, << 107 PolishedTeflonAirReflection,
92 PolishedTeflonAirReflection, << 108 PolishedTiOAirReflection,
93 PolishedTiOAirReflection, << 109 PolishedTyvekAirReflection,
94 PolishedTyvekAirReflection, << 110 PolishedVM2000AirReflection,
95 PolishedVM2000AirReflection, << 111 PolishedVM2000GlueReflection,
96 PolishedVM2000GlueReflection, << 112 EtchedLumirrorAirReflection,
97 EtchedLumirrorAirReflection, << 113 EtchedLumirrorGlueReflection,
98 EtchedLumirrorGlueReflection, << 114 EtchedAirReflection,
99 EtchedAirReflection, << 115 EtchedTeflonAirReflection,
100 EtchedTeflonAirReflection, << 116 EtchedTiOAirReflection,
101 EtchedTiOAirReflection, << 117 EtchedTyvekAirReflection,
102 EtchedTyvekAirReflection, << 118 EtchedVM2000AirReflection,
103 EtchedVM2000AirReflection, << 119 EtchedVM2000GlueReflection,
104 EtchedVM2000GlueReflection, << 120 GroundLumirrorAirReflection,
105 GroundLumirrorAirReflection, << 121 GroundLumirrorGlueReflection,
106 GroundLumirrorGlueReflection, << 122 GroundAirReflection,
107 GroundAirReflection, << 123 GroundTeflonAirReflection,
108 GroundTeflonAirReflection, << 124 GroundTiOAirReflection,
109 GroundTiOAirReflection, << 125 GroundTyvekAirReflection,
110 GroundTyvekAirReflection, << 126 GroundVM2000AirReflection,
111 GroundVM2000AirReflection, << 127 GroundVM2000GlueReflection };
112 GroundVM2000GlueReflection, <<
113 Dichroic, <<
114 CoatedDielectricReflection, <<
115 CoatedDielectricRefraction, <<
116 CoatedDielectricFrustratedTransmission <<
117 }; <<
118 128
119 class G4OpBoundaryProcess : public G4VDiscrete 129 class G4OpBoundaryProcess : public G4VDiscreteProcess
120 { 130 {
121 public: <<
122 explicit G4OpBoundaryProcess(const G4String& <<
123 G4ProcessType t <<
124 virtual ~G4OpBoundaryProcess(); <<
125 131
126 virtual G4bool IsApplicable( << 132 private:
127 const G4ParticleDefinition& aParticleType) << 133
128 // Returns true -> 'is applicable' only for << 134 //////////////
>> 135 // Operators
>> 136 //////////////
>> 137
>> 138 // G4OpBoundaryProcess& operator=(const G4OpBoundaryProcess &right);
>> 139
>> 140 // G4OpBoundaryProcess(const G4OpBoundaryProcess &right);
129 141
130 virtual G4double GetMeanFreePath(const G4Tra << 142 public: // Without description
131 G4ForceCond <<
132 // Returns infinity; i. e. the process does <<
133 // 'Forced' condition for the DoIt to be inv <<
134 // at a boundary will any action be taken. <<
135 143
136 G4VParticleChange* PostStepDoIt(const G4Trac << 144 ////////////////////////////////
137 const G4Step << 145 // Constructors and Destructor
138 // This is the method implementing boundary << 146 ////////////////////////////////
139 147
140 virtual G4OpBoundaryProcessStatus GetStatus( << 148 G4OpBoundaryProcess(const G4String& processName = "OpBoundary",
141 // Returns the current status. << 149 G4ProcessType type = fOptical);
142 150
143 virtual void SetInvokeSD(G4bool); << 151 ~G4OpBoundaryProcess();
144 // Set flag for call to InvokeSD method. <<
145 152
146 virtual void PreparePhysicsTable(const G4Par << 153 ////////////
>> 154 // Methods
>> 155 ////////////
147 156
148 virtual void Initialise(); << 157 public: // With description
149 158
150 void SetVerboseLevel(G4int); << 159 G4bool IsApplicable(const G4ParticleDefinition& aParticleType);
>> 160 // Returns true -> 'is applicable' only for an optical photon.
151 161
152 private: << 162 G4double GetMeanFreePath(const G4Track& ,
153 G4OpBoundaryProcess(const G4OpBoundaryProces << 163 G4double ,
154 G4OpBoundaryProcess& operator=(const G4OpBou << 164 G4ForceCondition* condition);
>> 165 // Returns infinity; i. e. the process does not limit the step,
>> 166 // but sets the 'Forced' condition for the DoIt to be invoked at
>> 167 // every step. However, only at a boundary will any action be
>> 168 // taken.
155 169
156 G4bool G4BooleanRand(const G4double prob) co << 170 G4VParticleChange* PostStepDoIt(const G4Track& aTrack,
>> 171 const G4Step& aStep);
>> 172 // This is the method implementing boundary processes.
157 173
158 G4ThreeVector GetFacetNormal(const G4ThreeVe << 174 G4OpticalSurfaceModel GetModel() const;
159 const G4ThreeVe << 175 // Returns the optical surface mode.
160 176
161 void DielectricMetal(); << 177 G4OpBoundaryProcessStatus GetStatus() const;
162 void DielectricDielectric(); << 178 // Returns the current status.
163 179
164 void DielectricLUT(); << 180 void SetModel(G4OpticalSurfaceModel model);
165 void DielectricLUTDAVIS(); << 181 // Set the optical surface model to be followed
>> 182 // (glisur || unified || LUT).
166 183
167 void DielectricDichroic(); << 184 private:
168 void CoatedDielectricDielectric(); <<
169 185
170 void ChooseReflection(); << 186 G4bool G4BooleanRand(const G4double prob) const;
171 void DoAbsorption(); <<
172 void DoReflection(); <<
173 187
174 G4double GetIncidentAngle(); << 188 G4ThreeVector GetFacetNormal(const G4ThreeVector& Momentum,
175 // Returns the incident angle of optical pho << 189 const G4ThreeVector& Normal) const;
176 190
177 G4double GetReflectivity(G4double E1_perp, G << 191 void DielectricMetal();
178 G4double incidentan << 192 void DielectricDielectric();
179 G4double ImaginaryR << 193 void DielectricLUT();
180 // Returns the Reflectivity on a metallic su <<
181 194
182 G4double GetReflectivityThroughThinLayer(G4d << 195 void ChooseReflection();
183 G4d << 196 void DoAbsorption();
184 G4d << 197 void DoReflection();
185 // Returns the Reflectivity on a coated surf <<
186 198
187 void CalculateReflectivity(); << 199 G4double GetIncidentAngle();
>> 200 // Returns the incident angle of optical photon
188 201
189 void BoundaryProcessVerbose() const; << 202 G4double GetReflectivity(G4double E1_perp,
>> 203 G4double E1_parl,
>> 204 G4double incidentangle,
>> 205 G4double RealRindex,
>> 206 G4double ImaginaryRindex);
>> 207 // Returns the Reflectivity on a metalic surface
190 208
191 // Invoke SD for post step point if the phot << 209 void CalculateReflectivity(void);
192 G4bool InvokeSD(const G4Step* step); <<
193 210
194 G4ThreeVector fOldMomentum; << 211 void BoundaryProcessVerbose(void) const;
195 G4ThreeVector fOldPolarization; <<
196 212
197 G4ThreeVector fNewMomentum; << 213 private:
198 G4ThreeVector fNewPolarization; <<
199 214
200 G4ThreeVector fGlobalNormal; << 215 G4double thePhotonMomentum;
201 G4ThreeVector fFacetNormal; <<
202 216
203 const G4Material* fMaterial1; << 217 G4ThreeVector OldMomentum;
204 const G4Material* fMaterial2; << 218 G4ThreeVector OldPolarization;
205 219
206 G4OpticalSurface* fOpticalSurface; << 220 G4ThreeVector NewMomentum;
>> 221 G4ThreeVector NewPolarization;
207 222
208 G4MaterialPropertyVector* fRealRIndexMPV; << 223 G4ThreeVector theGlobalNormal;
209 G4MaterialPropertyVector* fImagRIndexMPV; << 224 G4ThreeVector theFacetNormal;
210 G4Physics2DVector* fDichroicVector; <<
211 225
212 G4double fPhotonMomentum; << 226 G4Material* Material1;
213 G4double fRindex1; << 227 G4Material* Material2;
214 G4double fRindex2; <<
215 228
216 G4double fSint1; << 229 G4OpticalSurface* OpticalSurface;
217 230
218 G4double fReflectivity; << 231 G4MaterialPropertyVector* PropertyPointer;
219 G4double fEfficiency; << 232 G4MaterialPropertyVector* PropertyPointer1;
220 G4double fTransmittance; << 233 G4MaterialPropertyVector* PropertyPointer2;
221 G4double fSurfaceRoughness; <<
222 234
223 G4double fProb_sl, fProb_ss, fProb_bs; << 235 G4double Rindex1;
224 G4double fCarTolerance; << 236 G4double Rindex2;
225 237
226 // Used by CoatedDielectricDielectric() << 238 G4double cost1, cost2, sint1, sint2;
227 G4double fCoatedRindex, fCoatedThickness; <<
228 239
229 G4OpBoundaryProcessStatus fStatus; << 240 G4OpBoundaryProcessStatus theStatus;
230 G4OpticalSurfaceModel fModel; <<
231 G4OpticalSurfaceFinish fFinish; <<
232 241
233 G4int f_iTE, f_iTM; << 242 G4OpticalSurfaceModel theModel;
234 243
235 G4int fNumSmallStepWarnings = 0; // number o << 244 G4OpticalSurfaceFinish theFinish;
236 G4int fNumBdryTypeWarnings = 0; // number o <<
237 245
238 size_t idx_dichroicX = 0; << 246 G4double theReflectivity;
239 size_t idx_dichroicY = 0; << 247 G4double theEfficiency;
240 size_t idx_rindex1 = 0; << 248 G4double prob_sl, prob_ss, prob_bs;
241 size_t idx_rindex_surface = 0; <<
242 size_t idx_reflect = 0; <<
243 size_t idx_eff = 0; <<
244 size_t idx_trans = 0; <<
245 size_t idx_lobe = 0; <<
246 size_t idx_spike = 0; <<
247 size_t idx_back = 0; <<
248 size_t idx_rindex2 = 0; <<
249 size_t idx_groupvel = 0; <<
250 size_t idx_rrindex = 0; <<
251 size_t idx_irindex = 0; <<
252 size_t idx_coatedrindex = 0; <<
253 249
254 // Used by CoatedDielectricDielectric() << 250 G4int iTE, iTM;
255 G4bool fCoatedFrustratedTransmission = true; << 251
>> 252 G4double kCarTolerance;
256 253
257 G4bool fInvokeSD; <<
258 }; 254 };
259 255
260 //////////////////// 256 ////////////////////
261 // Inline methods 257 // Inline methods
262 //////////////////// 258 ////////////////////
263 259
264 inline G4bool G4OpBoundaryProcess::G4BooleanRa << 260 inline
>> 261 G4bool G4OpBoundaryProcess::G4BooleanRand(const G4double prob) const
265 { 262 {
266 // Returns a random boolean variable with th << 263 /* Returns a random boolean variable with the specified probability */
>> 264
267 return (G4UniformRand() < prob); 265 return (G4UniformRand() < prob);
268 } 266 }
269 267
270 inline G4bool G4OpBoundaryProcess::IsApplicabl << 268 inline
271 const G4ParticleDefinition& aParticleType) << 269 G4bool G4OpBoundaryProcess::IsApplicable(const G4ParticleDefinition&
>> 270 aParticleType)
272 { 271 {
273 return (&aParticleType == G4OpticalPhoton::O << 272 return ( &aParticleType == G4OpticalPhoton::OpticalPhoton() );
274 } 273 }
275 274
276 inline G4OpBoundaryProcessStatus G4OpBoundaryP << 275 inline
>> 276 G4OpticalSurfaceModel G4OpBoundaryProcess::GetModel() const
277 { 277 {
278 return fStatus; << 278 return theModel;
279 } 279 }
280 280
281 inline void G4OpBoundaryProcess::ChooseReflect << 281 inline
>> 282 G4OpBoundaryProcessStatus G4OpBoundaryProcess::GetStatus() const
282 { 283 {
283 G4double rand = G4UniformRand(); << 284 return theStatus;
284 if(rand < fProb_ss) <<
285 { <<
286 fStatus = SpikeReflection; <<
287 fFacetNormal = fGlobalNormal; <<
288 } <<
289 else if(rand < fProb_ss + fProb_sl) <<
290 { <<
291 fStatus = LobeReflection; <<
292 } <<
293 else if(rand < fProb_ss + fProb_sl + fProb_b <<
294 { <<
295 fStatus = BackScattering; <<
296 } <<
297 else <<
298 { <<
299 fStatus = LambertianReflection; <<
300 } <<
301 } 285 }
302 286
303 inline void G4OpBoundaryProcess::DoAbsorption( << 287 inline
>> 288 void G4OpBoundaryProcess::SetModel(G4OpticalSurfaceModel model)
304 { 289 {
305 fStatus = Absorption; << 290 theModel = model;
>> 291 }
306 292
307 if(G4BooleanRand(fEfficiency)) << 293 inline
308 { << 294 void G4OpBoundaryProcess::ChooseReflection()
309 // EnergyDeposited =/= 0 means: photon has << 295 {
310 fStatus = Detection; << 296 G4double rand = G4UniformRand();
311 aParticleChange.ProposeLocalEnergyDeposit( << 297 if ( rand >= 0.0 && rand < prob_ss ) {
312 } << 298 theStatus = SpikeReflection;
313 else << 299 theFacetNormal = theGlobalNormal;
314 { << 300 }
315 aParticleChange.ProposeLocalEnergyDeposit( << 301 else if ( rand >= prob_ss &&
316 } << 302 rand <= prob_ss+prob_sl) {
>> 303 theStatus = LobeReflection;
>> 304 }
>> 305 else if ( rand > prob_ss+prob_sl &&
>> 306 rand < prob_ss+prob_sl+prob_bs ) {
>> 307 theStatus = BackScattering;
>> 308 }
>> 309 else {
>> 310 theStatus = LambertianReflection;
>> 311 }
>> 312 }
317 313
318 fNewMomentum = fOldMomentum; << 314 inline
319 fNewPolarization = fOldPolarization; << 315 void G4OpBoundaryProcess::DoAbsorption()
>> 316 {
>> 317 theStatus = Absorption;
320 318
321 aParticleChange.ProposeTrackStatus(fStopAndK << 319 if ( G4BooleanRand(theEfficiency) ) {
>> 320
>> 321 // EnergyDeposited =/= 0 means: photon has been detected
>> 322 theStatus = Detection;
>> 323 aParticleChange.ProposeLocalEnergyDeposit(thePhotonMomentum);
>> 324 }
>> 325 else {
>> 326 aParticleChange.ProposeLocalEnergyDeposit(0.0);
>> 327 }
>> 328
>> 329 NewMomentum = OldMomentum;
>> 330 NewPolarization = OldPolarization;
>> 331
>> 332 // aParticleChange.ProposeEnergy(0.0);
>> 333 aParticleChange.ProposeTrackStatus(fStopAndKill);
322 } 334 }
323 335
324 inline void G4OpBoundaryProcess::DoReflection( << 336 inline
>> 337 void G4OpBoundaryProcess::DoReflection()
325 { 338 {
326 if(fStatus == LambertianReflection) << 339 if ( theStatus == LambertianReflection ) {
327 { << 340
328 fNewMomentum = G4LambertianRand(fGlobalNor << 341 NewMomentum = G4LambertianRand(theGlobalNormal);
329 fFacetNormal = (fNewMomentum - fOldMomentu << 342 theFacetNormal = (NewMomentum - OldMomentum).unit();
330 } << 343
331 else if(fFinish == ground) << 344 }
332 { << 345 else if ( theFinish == ground ) {
333 fStatus = LobeReflection; << 346
334 if(!fRealRIndexMPV || !fImagRIndexMPV) << 347 theStatus = LobeReflection;
335 { << 348 if ( PropertyPointer1 && PropertyPointer2 ){
336 fFacetNormal = GetFacetNormal(fOldMoment << 349 } else {
337 } << 350 theFacetNormal =
338 // else << 351 GetFacetNormal(OldMomentum,theGlobalNormal);
339 // complex ref. index to be implemented << 352 }
340 fNewMomentum = << 353 G4double PdotN = OldMomentum * theFacetNormal;
341 fOldMomentum - (2. * fOldMomentum * fFac << 354 NewMomentum = OldMomentum - (2.*PdotN)*theFacetNormal;
342 } << 355
343 else << 356 }
344 { << 357 else {
345 fStatus = SpikeReflection; << 358
346 fFacetNormal = fGlobalNormal; << 359 theStatus = SpikeReflection;
347 fNewMomentum = << 360 theFacetNormal = theGlobalNormal;
348 fOldMomentum - (2. * fOldMomentum * fFac << 361 G4double PdotN = OldMomentum * theFacetNormal;
349 } << 362 NewMomentum = OldMomentum - (2.*PdotN)*theFacetNormal;
350 fNewPolarization = << 363
351 -fOldPolarization + (2. * fOldPolarization << 364 }
>> 365 G4double EdotN = OldPolarization * theFacetNormal;
>> 366 NewPolarization = -OldPolarization + (2.*EdotN)*theFacetNormal;
352 } 367 }
353 368
354 #endif /* G4OpBoundaryProcess_h */ 369 #endif /* G4OpBoundaryProcess_h */
355 370