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26 // 26 //
>> 27 // $Id: G4OpBoundaryProcess.hh,v 1.18 2008/11/07 17:59:37 gum Exp $
>> 28 // GEANT4 tag $Name: geant4-09-02 $
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 <<
50 // with Look-Up-Tabl <<
51 // optical reflectan <<
52 // treatments - Than <<
53 // William Moses (La <<
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 // 51 //
59 // Author: Peter Gumplinger 52 // Author: Peter Gumplinger
60 // adopted from work by Werner Ke 53 // adopted from work by Werner Keil - April 2/96
>> 54 // mail: gum@triumf.ca
61 // 55 //
>> 56 // CVS version tag:
62 ////////////////////////////////////////////// 57 ////////////////////////////////////////////////////////////////////////
63 58
64 #ifndef G4OpBoundaryProcess_h 59 #ifndef G4OpBoundaryProcess_h
65 #define G4OpBoundaryProcess_h 1 60 #define G4OpBoundaryProcess_h 1
66 61
67 #include "G4OpticalPhoton.hh" << 62 /////////////
68 #include "G4OpticalSurface.hh" << 63 // Includes
>> 64 /////////////
>> 65
>> 66 #include "globals.hh"
>> 67 #include "templates.hh"
>> 68 #include "geomdefs.hh"
>> 69 #include "Randomize.hh"
>> 70
69 #include "G4RandomTools.hh" 71 #include "G4RandomTools.hh"
>> 72 #include "G4RandomDirection.hh"
>> 73
>> 74 #include "G4Step.hh"
70 #include "G4VDiscreteProcess.hh" 75 #include "G4VDiscreteProcess.hh"
>> 76 #include "G4DynamicParticle.hh"
>> 77 #include "G4Material.hh"
>> 78 #include "G4LogicalBorderSurface.hh"
>> 79 #include "G4LogicalSkinSurface.hh"
>> 80 #include "G4OpticalSurface.hh"
>> 81 #include "G4OpticalPhoton.hh"
>> 82 #include "G4TransportationManager.hh"
71 83
72 enum G4OpBoundaryProcessStatus << 84 // Class Description:
73 { << 85 // Discrete Process -- reflection/refraction at optical interfaces.
74 Undefined, << 86 // Class inherits publicly from G4VDiscreteProcess.
75 Transmission, << 87 // Class Description - End:
76 FresnelRefraction, << 88
77 FresnelReflection, << 89 /////////////////////
78 TotalInternalReflection, << 90 // Class Definition
79 LambertianReflection, << 91 /////////////////////
80 LobeReflection, << 92
81 SpikeReflection, << 93 enum G4OpBoundaryProcessStatus { Undefined,
82 BackScattering, << 94 FresnelRefraction, FresnelReflection,
83 Absorption, << 95 TotalInternalReflection,
84 Detection, << 96 LambertianReflection, LobeReflection,
85 NotAtBoundary, << 97 SpikeReflection, BackScattering,
86 SameMaterial, << 98 Absorption, Detection, NotAtBoundary,
87 StepTooSmall, << 99 SameMaterial, StepTooSmall, NoRINDEX };
88 NoRINDEX, <<
89 PolishedLumirrorAirReflection, <<
90 PolishedLumirrorGlueReflection, <<
91 PolishedAirReflection, <<
92 PolishedTeflonAirReflection, <<
93 PolishedTiOAirReflection, <<
94 PolishedTyvekAirReflection, <<
95 PolishedVM2000AirReflection, <<
96 PolishedVM2000GlueReflection, <<
97 EtchedLumirrorAirReflection, <<
98 EtchedLumirrorGlueReflection, <<
99 EtchedAirReflection, <<
100 EtchedTeflonAirReflection, <<
101 EtchedTiOAirReflection, <<
102 EtchedTyvekAirReflection, <<
103 EtchedVM2000AirReflection, <<
104 EtchedVM2000GlueReflection, <<
105 GroundLumirrorAirReflection, <<
106 GroundLumirrorGlueReflection, <<
107 GroundAirReflection, <<
108 GroundTeflonAirReflection, <<
109 GroundTiOAirReflection, <<
110 GroundTyvekAirReflection, <<
111 GroundVM2000AirReflection, <<
112 GroundVM2000GlueReflection, <<
113 Dichroic, <<
114 CoatedDielectricReflection, <<
115 CoatedDielectricRefraction, <<
116 CoatedDielectricFrustratedTransmission <<
117 }; <<
118 100
119 class G4OpBoundaryProcess : public G4VDiscrete 101 class G4OpBoundaryProcess : public G4VDiscreteProcess
120 { 102 {
121 public: <<
122 explicit G4OpBoundaryProcess(const G4String& <<
123 G4ProcessType t <<
124 virtual ~G4OpBoundaryProcess(); <<
125 103
126 virtual G4bool IsApplicable( << 104 private:
127 const G4ParticleDefinition& aParticleType) <<
128 // Returns true -> 'is applicable' only for <<
129 105
130 virtual G4double GetMeanFreePath(const G4Tra << 106 //////////////
131 G4ForceCond << 107 // Operators
132 // Returns infinity; i. e. the process does << 108 //////////////
133 // 'Forced' condition for the DoIt to be inv <<
134 // at a boundary will any action be taken. <<
135 109
136 G4VParticleChange* PostStepDoIt(const G4Trac << 110 // G4OpBoundaryProcess& operator=(const G4OpBoundaryProcess &right);
137 const G4Step <<
138 // This is the method implementing boundary <<
139 111
140 virtual G4OpBoundaryProcessStatus GetStatus( << 112 // G4OpBoundaryProcess(const G4OpBoundaryProcess &right);
141 // Returns the current status. <<
142 113
143 virtual void SetInvokeSD(G4bool); << 114 public: // Without description
144 // Set flag for call to InvokeSD method. <<
145 115
146 virtual void PreparePhysicsTable(const G4Par << 116 ////////////////////////////////
>> 117 // Constructors and Destructor
>> 118 ////////////////////////////////
147 119
148 virtual void Initialise(); << 120 G4OpBoundaryProcess(const G4String& processName = "OpBoundary",
>> 121 G4ProcessType type = fOptical);
149 122
150 void SetVerboseLevel(G4int); << 123 ~G4OpBoundaryProcess();
151 124
152 private: << 125 ////////////
153 G4OpBoundaryProcess(const G4OpBoundaryProces << 126 // Methods
154 G4OpBoundaryProcess& operator=(const G4OpBou << 127 ////////////
155 128
156 G4bool G4BooleanRand(const G4double prob) co << 129 public: // With description
157 130
158 G4ThreeVector GetFacetNormal(const G4ThreeVe << 131 G4bool IsApplicable(const G4ParticleDefinition& aParticleType);
159 const G4ThreeVe << 132 // Returns true -> 'is applicable' only for an optical photon.
160 133
161 void DielectricMetal(); << 134 G4double GetMeanFreePath(const G4Track& ,
162 void DielectricDielectric(); << 135 G4double ,
>> 136 G4ForceCondition* condition);
>> 137 // Returns infinity; i. e. the process does not limit the step,
>> 138 // but sets the 'Forced' condition for the DoIt to be invoked at
>> 139 // every step. However, only at a boundary will any action be
>> 140 // taken.
163 141
164 void DielectricLUT(); << 142 G4VParticleChange* PostStepDoIt(const G4Track& aTrack,
165 void DielectricLUTDAVIS(); << 143 const G4Step& aStep);
>> 144 // This is the method implementing boundary processes.
166 145
167 void DielectricDichroic(); << 146 G4OpticalSurfaceModel GetModel() const;
168 void CoatedDielectricDielectric(); << 147 // Returns the optical surface mode.
169 148
170 void ChooseReflection(); << 149 G4OpBoundaryProcessStatus GetStatus() const;
171 void DoAbsorption(); << 150 // Returns the current status.
172 void DoReflection(); <<
173 151
174 G4double GetIncidentAngle(); << 152 G4double GetIncidentAngle();
175 // Returns the incident angle of optical pho << 153 // Returns the incident angle of optical photon
176 154
177 G4double GetReflectivity(G4double E1_perp, G << 155 G4double GetReflectivity(G4double E1_perp,
178 G4double incidentan << 156 G4double E1_parl,
179 G4double ImaginaryR << 157 G4double incidentangle,
180 // Returns the Reflectivity on a metallic su << 158 G4double RealRindex,
>> 159 G4double ImaginaryRindex);
>> 160 // Returns the Reflectivity on a metalic surface
181 161
182 G4double GetReflectivityThroughThinLayer(G4d << 162 void SetModel(G4OpticalSurfaceModel model);
183 G4d << 163 // Set the optical surface model to be followed
184 G4d << 164 // (glisur || unified).
185 // Returns the Reflectivity on a coated surf <<
186 165
187 void CalculateReflectivity(); << 166 private:
188 167
189 void BoundaryProcessVerbose() const; << 168 G4bool G4BooleanRand(const G4double prob) const;
190 169
191 // Invoke SD for post step point if the phot << 170 G4ThreeVector GetFacetNormal(const G4ThreeVector& Momentum,
192 G4bool InvokeSD(const G4Step* step); << 171 const G4ThreeVector& Normal) const;
193 172
194 G4ThreeVector fOldMomentum; << 173 void DielectricMetal();
195 G4ThreeVector fOldPolarization; << 174 void DielectricDielectric();
196 175
197 G4ThreeVector fNewMomentum; << 176 void ChooseReflection();
198 G4ThreeVector fNewPolarization; << 177 void DoAbsorption();
>> 178 void DoReflection();
199 179
200 G4ThreeVector fGlobalNormal; << 180 private:
201 G4ThreeVector fFacetNormal; <<
202 181
203 const G4Material* fMaterial1; << 182 G4double thePhotonMomentum;
204 const G4Material* fMaterial2; <<
205 183
206 G4OpticalSurface* fOpticalSurface; << 184 G4ThreeVector OldMomentum;
>> 185 G4ThreeVector OldPolarization;
207 186
208 G4MaterialPropertyVector* fRealRIndexMPV; << 187 G4ThreeVector NewMomentum;
209 G4MaterialPropertyVector* fImagRIndexMPV; << 188 G4ThreeVector NewPolarization;
210 G4Physics2DVector* fDichroicVector; <<
211 189
212 G4double fPhotonMomentum; << 190 G4ThreeVector theGlobalNormal;
213 G4double fRindex1; << 191 G4ThreeVector theFacetNormal;
214 G4double fRindex2; <<
215 192
216 G4double fSint1; << 193 G4Material* Material1;
>> 194 G4Material* Material2;
217 195
218 G4double fReflectivity; << 196 G4OpticalSurface* OpticalSurface;
219 G4double fEfficiency; <<
220 G4double fTransmittance; <<
221 G4double fSurfaceRoughness; <<
222 197
223 G4double fProb_sl, fProb_ss, fProb_bs; << 198 G4double Rindex1;
224 G4double fCarTolerance; << 199 G4double Rindex2;
225 200
226 // Used by CoatedDielectricDielectric() << 201 G4double cost1, cost2, sint1, sint2;
227 G4double fCoatedRindex, fCoatedThickness; <<
228 202
229 G4OpBoundaryProcessStatus fStatus; << 203 G4OpBoundaryProcessStatus theStatus;
230 G4OpticalSurfaceModel fModel; <<
231 G4OpticalSurfaceFinish fFinish; <<
232 204
233 G4int f_iTE, f_iTM; << 205 G4OpticalSurfaceModel theModel;
234 206
235 G4int fNumSmallStepWarnings = 0; // number o << 207 G4OpticalSurfaceFinish theFinish;
236 G4int fNumBdryTypeWarnings = 0; // number o <<
237 208
238 size_t idx_dichroicX = 0; << 209 G4double theReflectivity;
239 size_t idx_dichroicY = 0; << 210 G4double theEfficiency;
240 size_t idx_rindex1 = 0; << 211 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; <<
253 212
254 // Used by CoatedDielectricDielectric() << 213 G4int iTE, iTM;
255 G4bool fCoatedFrustratedTransmission = true; <<
256 214
257 G4bool fInvokeSD; << 215 G4double kCarTolerance;
258 }; 216 };
259 217
260 //////////////////// 218 ////////////////////
261 // Inline methods 219 // Inline methods
262 //////////////////// 220 ////////////////////
263 221
264 inline G4bool G4OpBoundaryProcess::G4BooleanRa << 222 inline
>> 223 G4bool G4OpBoundaryProcess::G4BooleanRand(const G4double prob) const
265 { 224 {
266 // Returns a random boolean variable with th << 225 /* Returns a random boolean variable with the specified probability */
>> 226
267 return (G4UniformRand() < prob); 227 return (G4UniformRand() < prob);
268 } 228 }
269 229
270 inline G4bool G4OpBoundaryProcess::IsApplicabl << 230 inline
271 const G4ParticleDefinition& aParticleType) << 231 G4bool G4OpBoundaryProcess::IsApplicable(const G4ParticleDefinition&
>> 232 aParticleType)
272 { 233 {
273 return (&aParticleType == G4OpticalPhoton::O << 234 return ( &aParticleType == G4OpticalPhoton::OpticalPhoton() );
274 } 235 }
275 236
276 inline G4OpBoundaryProcessStatus G4OpBoundaryP << 237 inline
>> 238 G4OpticalSurfaceModel G4OpBoundaryProcess::GetModel() const
277 { 239 {
278 return fStatus; << 240 return theModel;
279 } 241 }
280 242
281 inline void G4OpBoundaryProcess::ChooseReflect << 243 inline
>> 244 G4OpBoundaryProcessStatus G4OpBoundaryProcess::GetStatus() const
282 { 245 {
283 G4double rand = G4UniformRand(); << 246 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 } 247 }
302 248
303 inline void G4OpBoundaryProcess::DoAbsorption( << 249 inline
>> 250 void G4OpBoundaryProcess::SetModel(G4OpticalSurfaceModel model)
304 { 251 {
305 fStatus = Absorption; << 252 theModel = model;
>> 253 }
306 254
307 if(G4BooleanRand(fEfficiency)) << 255 inline
308 { << 256 void G4OpBoundaryProcess::ChooseReflection()
309 // EnergyDeposited =/= 0 means: photon has << 257 {
310 fStatus = Detection; << 258 G4double rand = G4UniformRand();
311 aParticleChange.ProposeLocalEnergyDeposit( << 259 if ( rand >= 0.0 && rand < prob_ss ) {
312 } << 260 theStatus = SpikeReflection;
313 else << 261 theFacetNormal = theGlobalNormal;
314 { << 262 }
315 aParticleChange.ProposeLocalEnergyDeposit( << 263 else if ( rand >= prob_ss &&
316 } << 264 rand <= prob_ss+prob_sl) {
>> 265 theStatus = LobeReflection;
>> 266 }
>> 267 else if ( rand > prob_ss+prob_sl &&
>> 268 rand < prob_ss+prob_sl+prob_bs ) {
>> 269 theStatus = BackScattering;
>> 270 }
>> 271 else {
>> 272 theStatus = LambertianReflection;
>> 273 }
>> 274 }
>> 275
>> 276 inline
>> 277 void G4OpBoundaryProcess::DoAbsorption()
>> 278 {
>> 279 theStatus = Absorption;
317 280
318 fNewMomentum = fOldMomentum; << 281 if ( G4BooleanRand(theEfficiency) ) {
319 fNewPolarization = fOldPolarization; << 282
>> 283 // EnergyDeposited =/= 0 means: photon has been detected
>> 284 theStatus = Detection;
>> 285 aParticleChange.ProposeLocalEnergyDeposit(thePhotonMomentum);
>> 286 }
>> 287 else {
>> 288 aParticleChange.ProposeLocalEnergyDeposit(0.0);
>> 289 }
320 290
321 aParticleChange.ProposeTrackStatus(fStopAndK << 291 NewMomentum = OldMomentum;
>> 292 NewPolarization = OldPolarization;
>> 293
>> 294 // aParticleChange.ProposeEnergy(0.0);
>> 295 aParticleChange.ProposeTrackStatus(fStopAndKill);
322 } 296 }
323 297
324 inline void G4OpBoundaryProcess::DoReflection( << 298 inline
>> 299 void G4OpBoundaryProcess::DoReflection()
325 { 300 {
326 if(fStatus == LambertianReflection) << 301 if ( theStatus == LambertianReflection ) {
327 { << 302
328 fNewMomentum = G4LambertianRand(fGlobalNor << 303 NewMomentum = G4LambertianRand(theGlobalNormal);
329 fFacetNormal = (fNewMomentum - fOldMomentu << 304 theFacetNormal = (NewMomentum - OldMomentum).unit();
330 } << 305
331 else if(fFinish == ground) << 306 }
332 { << 307 else if ( theFinish == ground ) {
333 fStatus = LobeReflection; << 308
334 if(!fRealRIndexMPV || !fImagRIndexMPV) << 309 theStatus = LobeReflection;
335 { << 310 theFacetNormal = GetFacetNormal(OldMomentum,theGlobalNormal);
336 fFacetNormal = GetFacetNormal(fOldMoment << 311 G4double PdotN = OldMomentum * theFacetNormal;
337 } << 312 NewMomentum = OldMomentum - (2.*PdotN)*theFacetNormal;
338 // else << 313
339 // complex ref. index to be implemented << 314 }
340 fNewMomentum = << 315 else {
341 fOldMomentum - (2. * fOldMomentum * fFac << 316
342 } << 317 theStatus = SpikeReflection;
343 else << 318 theFacetNormal = theGlobalNormal;
344 { << 319 G4double PdotN = OldMomentum * theFacetNormal;
345 fStatus = SpikeReflection; << 320 NewMomentum = OldMomentum - (2.*PdotN)*theFacetNormal;
346 fFacetNormal = fGlobalNormal; << 321
347 fNewMomentum = << 322 }
348 fOldMomentum - (2. * fOldMomentum * fFac << 323 G4double EdotN = OldPolarization * theFacetNormal;
349 } << 324 NewPolarization = -OldPolarization + (2.*EdotN)*theFacetNormal;
350 fNewPolarization = <<
351 -fOldPolarization + (2. * fOldPolarization <<
352 } 325 }
353 326
354 #endif /* G4OpBoundaryProcess_h */ 327 #endif /* G4OpBoundaryProcess_h */
355 328