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d15a28e7 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
b2a60966 | 16 | /* $Id$ */ |
17 | ||
d15a28e7 | 18 | //_________________________________________________________________________ |
b2a60966 | 19 | // Geometry class for PHOS : singleton |
a3dfe79c | 20 | // PHOS consists of the electromagnetic calorimeter (EMCA) |
21 | // and a charged particle veto either in the Subatech's version (PPSD) | |
22 | // or in the IHEP's one (CPV). | |
23 | // The EMCA/PPSD/CPV modules are parametrized so that any configuration | |
24 | // can be easily implemented | |
25 | // The title is used to identify the version of CPV used. | |
b2a60966 | 26 | // |
27 | //*-- Author: Yves Schutz (SUBATECH) | |
d15a28e7 | 28 | |
29 | // --- ROOT system --- | |
30 | ||
31 | #include "TVector3.h" | |
32 | #include "TRotation.h" | |
33 | ||
34 | // --- Standard library --- | |
35 | ||
de9ec31b | 36 | #include <iostream.h> |
d15a28e7 | 37 | |
38 | // --- AliRoot header files --- | |
39 | ||
40 | #include "AliPHOSGeometry.h" | |
468794ea | 41 | #include "AliPHOSEMCAGeometry.h" |
d15a28e7 | 42 | #include "AliPHOSPpsdRecPoint.h" |
43 | #include "AliConst.h" | |
44 | ||
9ec91567 | 45 | ClassImp(AliPHOSGeometry) ; |
d15a28e7 | 46 | |
9ec91567 | 47 | AliPHOSGeometry * AliPHOSGeometry::fgGeom = 0 ; |
282c5906 | 48 | Bool_t AliPHOSGeometry::fgInit = kFALSE ; |
9ec91567 | 49 | |
d15a28e7 | 50 | //____________________________________________________________________________ |
51 | AliPHOSGeometry::~AliPHOSGeometry(void) | |
52 | { | |
b2a60966 | 53 | // dtor |
54 | ||
52a36ffd | 55 | if (fRotMatrixArray) fRotMatrixArray->Delete() ; |
56 | if (fRotMatrixArray) delete fRotMatrixArray ; | |
57 | if (fPHOSAngle ) delete fPHOSAngle ; | |
58 | } | |
59 | ||
60 | //____________________________________________________________________________ | |
61 | ||
62 | void AliPHOSGeometry::Init(void) | |
63 | { | |
64 | // Initializes the PHOS parameters | |
65 | ||
52a36ffd | 66 | if ( ((strcmp( fName, "default" )) == 0) || |
67 | ((strcmp( fName, "GPS2" )) == 0) || | |
ed4205d8 | 68 | ((strcmp( fName, "IHEP" )) == 0) || |
69 | ((strcmp( fName, "MIXT" )) == 0) ) { | |
52a36ffd | 70 | fgInit = kTRUE ; |
ed4205d8 | 71 | |
72 | fNModules = 5; | |
73 | fNPPSDModules = 0; | |
74 | fAngle = 20; | |
75 | ||
76 | fGeometryEMCA = new AliPHOSEMCAGeometry(); | |
77 | if ( ((strcmp( fName, "GPS2" )) == 0) ) { | |
78 | fGeometryPPSD = new AliPHOSPPSDGeometry(); | |
79 | fGeometryCPV = 0; | |
80 | fNPPSDModules = fNModules; | |
81 | } | |
82 | else if ( ((strcmp( fName, "IHEP" )) == 0) ) { | |
83 | fGeometryCPV = new AliPHOSCPVGeometry (); | |
84 | fGeometryPPSD = 0; | |
85 | fNPPSDModules = 0; | |
86 | } | |
87 | else if ( ((strcmp( fName, "MIXT" )) == 0) ) { | |
88 | fGeometryCPV = new AliPHOSCPVGeometry (); | |
89 | fGeometryPPSD = new AliPHOSPPSDGeometry(); | |
90 | fNPPSDModules = 1; | |
91 | } | |
92 | fGeometrySUPP = new AliPHOSSupportGeometry(); | |
93 | ||
52a36ffd | 94 | fPHOSAngle = new Float_t[fNModules] ; |
95 | Int_t index ; | |
96 | for ( index = 0; index < fNModules; index++ ) | |
97 | fPHOSAngle[index] = 0.0 ; // Module position angles are set in CreateGeometry() | |
98 | ||
99 | this->SetPHOSAngles() ; | |
100 | fRotMatrixArray = new TObjArray(fNModules) ; | |
101 | } | |
ed4205d8 | 102 | else { |
103 | fgInit = kFALSE ; | |
104 | cout << "PHOS Geometry setup: option not defined " << fName << endl ; | |
105 | } | |
52a36ffd | 106 | } |
107 | ||
2f04ed65 | 108 | //____________________________________________________________________________ |
109 | Float_t AliPHOSGeometry::GetCPVBoxSize(Int_t index) const { | |
110 | if (strcmp(fName,"GPS2") ==0 ) | |
111 | return fGeometryPPSD->GetCPVBoxSize(index); | |
112 | else if (strcmp(fName,"IHEP")==0) | |
113 | return fGeometryCPV ->GetCPVBoxSize(index); | |
114 | else if (strcmp(fName,"MIXT")==0) | |
115 | return TMath::Max(fGeometryCPV ->GetCPVBoxSize(index), fGeometryPPSD->GetCPVBoxSize(index)); | |
116 | else | |
117 | return 0; | |
118 | } | |
119 | ||
52a36ffd | 120 | //____________________________________________________________________________ |
121 | AliPHOSGeometry * AliPHOSGeometry::GetInstance() | |
122 | { | |
123 | // Returns the pointer of the unique instance | |
124 | return (AliPHOSGeometry *) fgGeom ; | |
125 | } | |
126 | ||
127 | //____________________________________________________________________________ | |
128 | AliPHOSGeometry * AliPHOSGeometry::GetInstance(const Text_t* name, const Text_t* title) | |
129 | { | |
130 | // Returns the pointer of the unique instance | |
131 | AliPHOSGeometry * rv = 0 ; | |
132 | if ( fgGeom == 0 ) { | |
133 | if ( strcmp(name,"") == 0 ) | |
134 | rv = 0 ; | |
135 | else { | |
136 | fgGeom = new AliPHOSGeometry(name, title) ; | |
137 | if ( fgInit ) | |
138 | rv = (AliPHOSGeometry * ) fgGeom ; | |
139 | else { | |
140 | rv = 0 ; | |
141 | delete fgGeom ; | |
142 | fgGeom = 0 ; | |
143 | } | |
144 | } | |
145 | } | |
146 | else { | |
147 | if ( strcmp(fgGeom->GetName(), name) != 0 ) { | |
148 | cout << "AliPHOSGeometry <E> : current geometry is " << fgGeom->GetName() << endl | |
149 | << " you cannot call " << name << endl ; | |
150 | } | |
151 | else | |
152 | rv = (AliPHOSGeometry *) fgGeom ; | |
153 | } | |
154 | return rv ; | |
155 | } | |
4697edca | 156 | |
52a36ffd | 157 | //____________________________________________________________________________ |
158 | void AliPHOSGeometry::SetPHOSAngles() | |
159 | { | |
160 | // Calculates the position in ALICE of the PHOS modules | |
161 | ||
162 | Double_t const kRADDEG = 180.0 / kPI ; | |
ed4205d8 | 163 | Float_t pphi = 2 * TMath::ATan( GetOuterBoxSize(0) / ( 2.0 * GetIPtoOuterCoverDistance() ) ) ; |
52a36ffd | 164 | pphi *= kRADDEG ; |
ed4205d8 | 165 | if (pphi > fAngle) cout << "AliPHOSGeometry: PHOS modules overlap!\n"; |
166 | pphi = fAngle; | |
52a36ffd | 167 | |
168 | for( Int_t i = 1; i <= fNModules ; i++ ) { | |
ed4205d8 | 169 | Float_t angle = pphi * ( i - fNModules / 2.0 - 0.5 ) ; |
52a36ffd | 170 | fPHOSAngle[i-1] = - angle ; |
171 | } | |
d15a28e7 | 172 | } |
173 | ||
174 | //____________________________________________________________________________ | |
92862013 | 175 | Bool_t AliPHOSGeometry::AbsToRelNumbering(const Int_t AbsId, Int_t * relid) |
d15a28e7 | 176 | { |
b2a60966 | 177 | // Converts the absolute numbering into the following array/ |
178 | // relid[0] = PHOS Module number 1:fNModules | |
179 | // relid[1] = 0 if PbW04 | |
180 | // = PPSD Module number 1:fNumberOfModulesPhi*fNumberOfModulesZ*2 (2->up and bottom level) | |
181 | // relid[2] = Row number inside a PHOS or PPSD module | |
182 | // relid[3] = Column number inside a PHOS or PPSD module | |
d15a28e7 | 183 | |
184 | Bool_t rv = kTRUE ; | |
92862013 | 185 | Float_t id = AbsId ; |
d15a28e7 | 186 | |
92862013 | 187 | Int_t phosmodulenumber = (Int_t)TMath:: Ceil( id / ( GetNPhi() * GetNZ() ) ) ; |
d15a28e7 | 188 | |
52a36ffd | 189 | if ( phosmodulenumber > GetNModules() ) { // it is a PPSD or CPV pad |
190 | ||
191 | if ( strcmp(fName,"GPS2") == 0 ) { | |
192 | id -= GetNPhi() * GetNZ() * GetNModules() ; | |
193 | Float_t tempo = 2 * GetNumberOfModulesPhi() * GetNumberOfModulesZ() * GetNumberOfPadsPhi() * GetNumberOfPadsZ() ; | |
194 | relid[0] = (Int_t)TMath::Ceil( id / tempo ) ; | |
195 | id -= ( relid[0] - 1 ) * tempo ; | |
196 | relid[1] = (Int_t)TMath::Ceil( id / ( GetNumberOfPadsPhi() * GetNumberOfPadsZ() ) ) ; | |
197 | id -= ( relid[1] - 1 ) * GetNumberOfPadsPhi() * GetNumberOfPadsZ() ; | |
198 | relid[2] = (Int_t)TMath::Ceil( id / GetNumberOfPadsPhi() ) ; | |
199 | relid[3] = (Int_t) ( id - ( relid[2] - 1 ) * GetNumberOfPadsPhi() ) ; | |
200 | } | |
201 | else if ( strcmp(fName,"IHEP") == 0 ) { | |
202 | id -= GetNPhi() * GetNZ() * GetNModules() ; | |
ed4205d8 | 203 | Float_t nCPV = GetNumberOfCPVPadsPhi() * GetNumberOfCPVPadsZ() ; |
204 | relid[0] = (Int_t) TMath::Ceil( id / nCPV ) ; | |
52a36ffd | 205 | relid[1] = 1 ; |
ed4205d8 | 206 | id -= ( relid[0] - 1 ) * nCPV ; |
207 | relid[2] = (Int_t) TMath::Ceil( id / GetNumberOfCPVPadsZ() ) ; | |
208 | relid[3] = (Int_t) ( id - ( relid[2] - 1 ) * GetNumberOfCPVPadsZ() ) ; | |
209 | } | |
210 | else if ( strcmp(fName,"MIXT") == 0 ) { | |
211 | id -= GetNPhi() * GetNZ() * GetNModules() ; | |
212 | Float_t nPPSD = 2 * GetNumberOfModulesPhi() * GetNumberOfModulesZ() * GetNumberOfPadsPhi() * GetNumberOfPadsZ() ; | |
213 | Float_t nCPV = GetNumberOfCPVPadsPhi() * GetNumberOfCPVPadsZ() ; | |
214 | if (id <= nCPV*GetNCPVModules()) { // this pad belons to CPV | |
215 | relid[0] = (Int_t) TMath::Ceil( id / nCPV ) ; | |
216 | relid[1] = 1 ; | |
217 | id -= ( relid[0] - 1 ) * nCPV ; | |
218 | relid[2] = (Int_t) TMath::Ceil( id / GetNumberOfCPVPadsZ() ) ; | |
219 | relid[3] = (Int_t) ( id - ( relid[2] - 1 ) * GetNumberOfCPVPadsZ() ) ; | |
220 | } | |
221 | else { // this pad belons to PPSD | |
222 | id -= nCPV*GetNCPVModules(); | |
223 | relid[0] = (Int_t)TMath::Ceil( id / nPPSD ); | |
224 | id -= ( relid[0] - 1 ) * nPPSD ; | |
225 | relid[0] += GetNCPVModules(); | |
226 | relid[1] = (Int_t)TMath::Ceil( id / ( GetNumberOfPadsPhi() * GetNumberOfPadsZ() ) ) ; | |
227 | id -= ( relid[1] - 1 ) * GetNumberOfPadsPhi() * GetNumberOfPadsZ() ; | |
228 | relid[2] = (Int_t)TMath::Ceil( id / GetNumberOfPadsPhi() ) ; | |
229 | relid[3] = (Int_t) ( id - ( relid[2] - 1 ) * GetNumberOfPadsPhi() ) ; | |
230 | } | |
52a36ffd | 231 | } |
d15a28e7 | 232 | } |
233 | else { // its a PW04 crystal | |
234 | ||
92862013 | 235 | relid[0] = phosmodulenumber ; |
236 | relid[1] = 0 ; | |
237 | id -= ( phosmodulenumber - 1 ) * GetNPhi() * GetNZ() ; | |
238 | relid[2] = (Int_t)TMath::Ceil( id / GetNPhi() ) ; | |
239 | relid[3] = (Int_t)( id - ( relid[2] - 1 ) * GetNPhi() ) ; | |
d15a28e7 | 240 | } |
241 | return rv ; | |
242 | } | |
52a36ffd | 243 | |
9f616d61 | 244 | //____________________________________________________________________________ |
245 | void AliPHOSGeometry::EmcModuleCoverage(const Int_t mod, Double_t & tm, Double_t & tM, Double_t & pm, Double_t & pM, Option_t * opt) | |
246 | { | |
247 | // calculates the angular coverage in theta and phi of a EMC module | |
248 | ||
249 | Double_t conv ; | |
cf0c2bc1 | 250 | if ( opt == Radian() ) |
9f616d61 | 251 | conv = 1. ; |
cf0c2bc1 | 252 | else if ( opt == Degre() ) |
9f616d61 | 253 | conv = 180. / TMath::Pi() ; |
254 | else { | |
255 | cout << "<I> AliPHOSGeometry::EmcXtalCoverage : " << opt << " unknown option; result in radian " << endl ; | |
256 | conv = 1. ; | |
257 | } | |
258 | ||
259 | Float_t phi = GetPHOSAngle(mod) * (TMath::Pi() / 180.) ; | |
92862013 | 260 | Float_t y0 = GetIPtoOuterCoverDistance() + GetUpperPlateThickness() |
9f616d61 | 261 | + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness() ; |
262 | ||
92862013 | 263 | Double_t angle = TMath::ATan( GetCrystalSize(0)*GetNPhi() / (2 * y0) ) ; |
9f616d61 | 264 | phi = phi + 1.5 * TMath::Pi() ; // to follow the convention of the particle generator(PHOS is between 230 and 310 deg.) |
92862013 | 265 | Double_t max = phi - angle ; |
266 | Double_t min = phi + angle ; | |
267 | pM = TMath::Max(max, min) * conv ; | |
268 | pm = TMath::Min(max, min) * conv ; | |
9f616d61 | 269 | |
92862013 | 270 | angle = TMath::ATan( GetCrystalSize(2)*GetNZ() / (2 * y0) ) ; |
271 | max = TMath::Pi() / 2. + angle ; // to follow the convention of the particle generator(PHOS is at 90 deg.) | |
272 | min = TMath::Pi() / 2. - angle ; | |
273 | tM = TMath::Max(max, min) * conv ; | |
274 | tm = TMath::Min(max, min) * conv ; | |
9f616d61 | 275 | |
276 | } | |
277 | ||
278 | //____________________________________________________________________________ | |
279 | void AliPHOSGeometry::EmcXtalCoverage(Double_t & theta, Double_t & phi, Option_t * opt) | |
280 | { | |
281 | // calculates the angular coverage in theta and phi of a single crystal in a EMC module | |
282 | ||
283 | Double_t conv ; | |
cf0c2bc1 | 284 | if ( opt == Radian() ) |
9f616d61 | 285 | conv = 1. ; |
cf0c2bc1 | 286 | else if ( opt == Degre() ) |
9f616d61 | 287 | conv = 180. / TMath::Pi() ; |
288 | else { | |
289 | cout << "<I> AliPHOSGeometry::EmcXtalCoverage : " << opt << " unknown option; result in radian " << endl ; | |
290 | conv = 1. ; | |
291 | } | |
292 | ||
92862013 | 293 | Float_t y0 = GetIPtoOuterCoverDistance() + GetUpperPlateThickness() |
9f616d61 | 294 | + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness() ; |
92862013 | 295 | theta = 2 * TMath::ATan( GetCrystalSize(2) / (2 * y0) ) * conv ; |
296 | phi = 2 * TMath::ATan( GetCrystalSize(0) / (2 * y0) ) * conv ; | |
9f616d61 | 297 | } |
298 | ||
299 | ||
300 | //____________________________________________________________________________ | |
52a36ffd | 301 | void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos, TMatrix & gmat) const |
d15a28e7 | 302 | { |
b2a60966 | 303 | // Calculates the ALICE global coordinates of a RecPoint and the error matrix |
304 | ||
d15a28e7 | 305 | AliPHOSRecPoint * tmpPHOS = (AliPHOSRecPoint *) RecPoint ; |
92862013 | 306 | TVector3 localposition ; |
d15a28e7 | 307 | |
308 | tmpPHOS->GetLocalPosition(gpos) ; | |
309 | ||
310 | ||
311 | if ( tmpPHOS->IsEmc() ) // it is a EMC crystal | |
312 | { gpos.SetY( -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness() + | |
313 | GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ) ; | |
314 | ||
315 | } | |
316 | else | |
317 | { // it is a PPSD pad | |
318 | AliPHOSPpsdRecPoint * tmpPpsd = (AliPHOSPpsdRecPoint *) RecPoint ; | |
319 | if (tmpPpsd->GetUp() ) // it is an upper module | |
320 | { | |
321 | gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() - | |
322 | GetLeadToMicro2Gap() - GetLeadConverterThickness() - | |
323 | GetMicro1ToLeadGap() - GetMicromegas1Thickness() / 2.0 ) ) ; | |
324 | } | |
325 | else // it is a lower module | |
326 | gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() / 2.0) ) ; | |
327 | } | |
328 | ||
92862013 | 329 | Float_t phi = GetPHOSAngle( tmpPHOS->GetPHOSMod()) ; |
330 | Double_t const kRADDEG = 180.0 / kPI ; | |
331 | Float_t rphi = phi / kRADDEG ; | |
d15a28e7 | 332 | |
92862013 | 333 | TRotation rot ; |
334 | rot.RotateZ(-rphi) ; // a rotation around Z by angle | |
d15a28e7 | 335 | |
92862013 | 336 | TRotation dummy = rot.Invert() ; // to transform from original frame to rotate frame |
337 | gpos.Transform(rot) ; // rotate the baby | |
6ad0bfa0 | 338 | |
d15a28e7 | 339 | } |
340 | ||
341 | //____________________________________________________________________________ | |
5cda30f6 | 342 | void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos) const |
d15a28e7 | 343 | { |
b2a60966 | 344 | // Calculates the ALICE global coordinates of a RecPoint |
345 | ||
d15a28e7 | 346 | AliPHOSRecPoint * tmpPHOS = (AliPHOSRecPoint *) RecPoint ; |
92862013 | 347 | TVector3 localposition ; |
d15a28e7 | 348 | tmpPHOS->GetLocalPosition(gpos) ; |
349 | ||
350 | ||
351 | if ( tmpPHOS->IsEmc() ) // it is a EMC crystal | |
352 | { gpos.SetY( -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness() + | |
353 | GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ) ; | |
354 | } | |
355 | else | |
356 | { // it is a PPSD pad | |
357 | AliPHOSPpsdRecPoint * tmpPpsd = (AliPHOSPpsdRecPoint *) RecPoint ; | |
358 | if (tmpPpsd->GetUp() ) // it is an upper module | |
359 | { | |
360 | gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() - | |
361 | GetLeadToMicro2Gap() - GetLeadConverterThickness() - | |
362 | GetMicro1ToLeadGap() - GetMicromegas1Thickness() / 2.0 ) ) ; | |
363 | } | |
364 | else // it is a lower module | |
365 | gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() / 2.0) ) ; | |
366 | } | |
367 | ||
92862013 | 368 | Float_t phi = GetPHOSAngle( tmpPHOS->GetPHOSMod()) ; |
369 | Double_t const kRADDEG = 180.0 / kPI ; | |
370 | Float_t rphi = phi / kRADDEG ; | |
d15a28e7 | 371 | |
92862013 | 372 | TRotation rot ; |
373 | rot.RotateZ(-rphi) ; // a rotation around Z by angle | |
d15a28e7 | 374 | |
92862013 | 375 | TRotation dummy = rot.Invert() ; // to transform from original frame to rotate frame |
376 | gpos.Transform(rot) ; // rotate the baby | |
d15a28e7 | 377 | } |
378 | ||
379 | //____________________________________________________________________________ | |
52a36ffd | 380 | void AliPHOSGeometry::ImpactOnEmc(const Double_t theta, const Double_t phi, Int_t & ModuleNumber, Double_t & z, Double_t & x) |
d15a28e7 | 381 | { |
52a36ffd | 382 | // calculates the impact coordinates of a neutral particle |
383 | // emitted in direction theta and phi in ALICE | |
d15a28e7 | 384 | |
52a36ffd | 385 | // searches for the PHOS EMC module |
386 | ModuleNumber = 0 ; | |
387 | Double_t tm, tM, pm, pM ; | |
388 | Int_t index = 1 ; | |
389 | while ( ModuleNumber == 0 && index <= GetNModules() ) { | |
390 | EmcModuleCoverage(index, tm, tM, pm, pM) ; | |
391 | if ( (theta >= tm && theta <= tM) && (phi >= pm && phi <= pM ) ) | |
392 | ModuleNumber = index ; | |
393 | index++ ; | |
d15a28e7 | 394 | } |
52a36ffd | 395 | if ( ModuleNumber != 0 ) { |
396 | Float_t phi0 = GetPHOSAngle(ModuleNumber) * (TMath::Pi() / 180.) + 1.5 * TMath::Pi() ; | |
397 | Float_t y0 = GetIPtoOuterCoverDistance() + GetUpperPlateThickness() | |
398 | + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness() ; | |
399 | Double_t angle = phi - phi0; | |
400 | x = y0 * TMath::Tan(angle) ; | |
401 | angle = theta - TMath::Pi() / 2 ; | |
402 | z = y0 * TMath::Tan(angle) ; | |
d15a28e7 | 403 | } |
d15a28e7 | 404 | } |
405 | ||
406 | //____________________________________________________________________________ | |
92862013 | 407 | Bool_t AliPHOSGeometry::RelToAbsNumbering(const Int_t * relid, Int_t & AbsId) |
d15a28e7 | 408 | { |
b2a60966 | 409 | // Converts the relative numbering into the absolute numbering |
ed4205d8 | 410 | // EMCA crystals: |
411 | // AbsId = from 1 to fNModules * fNPhi * fNZ | |
412 | // PPSD gas cell: | |
413 | // AbsId = from N(total EMCA crystals) + 1 | |
414 | // to NCPVModules * fNumberOfCPVPadsPhi * fNumberOfCPVPadsZ + | |
415 | // fNModules * 2 * (fNumberOfModulesPhi * fNumberOfModulesZ) * fNumberOfPadsPhi * fNumberOfPadsZ | |
416 | // CPV pad: | |
417 | // AbsId = from N(total PHOS crystals) + 1 | |
418 | // to NCPVModules * fNumberOfCPVPadsPhi * fNumberOfCPVPadsZ | |
d15a28e7 | 419 | |
420 | Bool_t rv = kTRUE ; | |
421 | ||
ed4205d8 | 422 | if ( relid[1] > 0 && strcmp(fName,"GPS2")==0) { // it is a PPSD pad |
423 | AbsId = GetNPhi() * GetNZ() * GetNModules() // the offset to separate EMCA crystals from PPSD pads | |
424 | + ( relid[0] - 1 ) * GetNumberOfModulesPhi() * GetNumberOfModulesZ() // the pads offset of PPSD modules | |
d15a28e7 | 425 | * GetNumberOfPadsPhi() * GetNumberOfPadsZ() * 2 |
ed4205d8 | 426 | + ( relid[1] - 1 ) * GetNumberOfPadsPhi() * GetNumberOfPadsZ() // the pads offset of PPSD modules |
427 | + ( relid[2] - 1 ) * GetNumberOfPadsPhi() // the pads offset of a PPSD row | |
428 | + relid[3] ; // the column number | |
429 | } | |
430 | ||
431 | else if ( relid[1] > 0 && strcmp(fName,"MIXT")==0) { // it is a PPSD pad | |
432 | AbsId = GetNPhi() * GetNZ() * GetNModules() // the offset to separate EMCA crystals from PPSD pads | |
433 | + GetNCPVModules() * GetNumberOfCPVPadsPhi() * GetNumberOfCPVPadsZ() // the pads offset of CPV modules if any | |
434 | + ( relid[0] - 1 - GetNCPVModules()) | |
435 | * GetNumberOfModulesPhi() * GetNumberOfModulesZ() // the pads offset of PPSD modules | |
436 | * GetNumberOfPadsPhi() * GetNumberOfPadsZ() * 2 | |
437 | + ( relid[1] - 1 ) * GetNumberOfPadsPhi() * GetNumberOfPadsZ() // the pads offset of PPSD modules | |
438 | + ( relid[2] - 1 ) * GetNumberOfPadsPhi() // the pads offset of a PPSD row | |
439 | + relid[3] ; // the column number | |
d15a28e7 | 440 | } |
52a36ffd | 441 | |
442 | else if ( relid[1] == 0 ) { // it is a Phos crystal | |
443 | AbsId = | |
444 | ( relid[0] - 1 ) * GetNPhi() * GetNZ() // the offset of PHOS modules | |
445 | + ( relid[2] - 1 ) * GetNPhi() // the offset of a xtal row | |
446 | + relid[3] ; // the column number | |
d15a28e7 | 447 | } |
448 | ||
52a36ffd | 449 | else if ( relid[1] == -1 ) { // it is a CPV pad |
450 | AbsId = GetNPhi() * GetNZ() * GetNModules() // the offset to separate EMCA crystals from CPV pads | |
ed4205d8 | 451 | + ( relid[0] - 1 ) * GetNumberOfCPVPadsPhi() * GetNumberOfCPVPadsZ() // the pads offset of PHOS modules |
452 | + ( relid[2] - 1 ) * GetNumberOfCPVPadsZ() // the pads offset of a CPV row | |
52a36ffd | 453 | + relid[3] ; // the column number |
454 | } | |
455 | ||
d15a28e7 | 456 | return rv ; |
457 | } | |
458 | ||
459 | //____________________________________________________________________________ | |
460 | ||
92862013 | 461 | void AliPHOSGeometry::RelPosInAlice(const Int_t id, TVector3 & pos ) |
d15a28e7 | 462 | { |
b2a60966 | 463 | // Converts the absolute numbering into the global ALICE coordinates |
ed4205d8 | 464 | // It works only for the GPS2 geometry |
b2a60966 | 465 | |
ed4205d8 | 466 | if (id > 0 && strcmp(fName,"GPS2")==0) { |
467 | ||
468 | Int_t relid[4] ; | |
469 | ||
470 | AbsToRelNumbering(id , relid) ; | |
471 | ||
472 | Int_t phosmodule = relid[0] ; | |
473 | ||
474 | Float_t y0 = 0 ; | |
475 | ||
476 | if ( relid[1] == 0 ) { // it is a PbW04 crystal | |
477 | y0 = -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness() | |
478 | + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ; | |
479 | } | |
480 | if ( relid[1] > 0 ) { // its a PPSD pad | |
481 | if ( relid[1] > GetNumberOfModulesPhi() * GetNumberOfModulesZ() ) { // its an bottom module | |
482 | y0 = -( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() / 2.0) ; | |
483 | } | |
484 | else // its an upper module | |
485 | y0 = -( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() - GetLeadToMicro2Gap() | |
486 | - GetLeadConverterThickness() - GetMicro1ToLeadGap() - GetMicromegas1Thickness() / 2.0) ; | |
487 | } | |
488 | ||
489 | Float_t x, z ; | |
490 | RelPosInModule(relid, x, z) ; | |
491 | ||
492 | pos.SetX(x) ; | |
493 | pos.SetZ(z) ; | |
494 | pos.SetY( TMath::Sqrt(x*x + z*z + y0*y0) ) ; | |
495 | ||
496 | ||
497 | ||
498 | Float_t phi = GetPHOSAngle( phosmodule) ; | |
499 | Double_t const kRADDEG = 180.0 / kPI ; | |
500 | Float_t rphi = phi / kRADDEG ; | |
501 | ||
502 | TRotation rot ; | |
503 | rot.RotateZ(-rphi) ; // a rotation around Z by angle | |
504 | ||
505 | TRotation dummy = rot.Invert() ; // to transform from original frame to rotate frame | |
506 | ||
507 | pos.Transform(rot) ; // rotate the baby | |
d15a28e7 | 508 | } |
509 | else { | |
ed4205d8 | 510 | pos.SetX(0.); |
511 | pos.SetY(0.); | |
512 | pos.SetZ(0.); | |
513 | } | |
d15a28e7 | 514 | } |
515 | ||
516 | //____________________________________________________________________________ | |
92862013 | 517 | void AliPHOSGeometry::RelPosInModule(const Int_t * relid, Float_t & x, Float_t & z) |
d15a28e7 | 518 | { |
b2a60966 | 519 | // Converts the relative numbering into the local PHOS-module (x, z) coordinates |
52a36ffd | 520 | // Note: sign of z differs from that in the previous version (Yu.Kharlov, 12 Oct 2000) |
ed4205d8 | 521 | |
522 | Bool_t padOfCPV = (strcmp(fName,"IHEP")==0) || | |
523 | ((strcmp(fName,"MIXT")==0) && relid[0]<=GetNCPVModules()) ; | |
524 | Bool_t padOfPPSD = (strcmp(fName,"GPS2")==0) || | |
525 | ((strcmp(fName,"MIXT")==0) && relid[0]> GetNCPVModules()) ; | |
b2a60966 | 526 | |
92862013 | 527 | Int_t ppsdmodule ; |
a3dfe79c | 528 | Float_t x0,z0; |
52a36ffd | 529 | Int_t row = relid[2] ; //offset along x axiz |
530 | Int_t column = relid[3] ; //offset along z axiz | |
d15a28e7 | 531 | |
ed4205d8 | 532 | Float_t padsizeZ = 0; |
533 | Float_t padsizeX = 0; | |
534 | Int_t nOfPadsPhi = 0; | |
535 | Int_t nOfPadsZ = 0; | |
536 | if ( padOfPPSD ) { | |
537 | padsizeZ = GetPPSDModuleSize(2) / GetNumberOfPadsZ(); | |
538 | padsizeX = GetPPSDModuleSize(0) / GetNumberOfPadsPhi(); | |
539 | nOfPadsPhi = GetNumberOfPadsPhi(); | |
540 | nOfPadsZ = GetNumberOfPadsZ(); | |
541 | } | |
542 | else if ( padOfCPV ) { | |
543 | padsizeZ = GetPadSizeZ(); | |
544 | padsizeX = GetPadSizePhi(); | |
545 | nOfPadsPhi = GetNumberOfCPVPadsPhi(); | |
546 | nOfPadsZ = GetNumberOfCPVPadsZ(); | |
547 | } | |
548 | ||
92862013 | 549 | if ( relid[1] == 0 ) { // its a PbW04 crystal |
52a36ffd | 550 | x = - ( GetNPhi()/2. - row + 0.5 ) * GetCrystalSize(0) ; // position ox Xtal with respect |
551 | z = ( GetNZ() /2. - column + 0.5 ) * GetCrystalSize(2) ; // of center of PHOS module | |
552 | } | |
553 | else { | |
ed4205d8 | 554 | if ( padOfPPSD ) { |
555 | if ( relid[1] > GetNumberOfModulesPhi() * GetNumberOfModulesZ() ) | |
556 | ppsdmodule = relid[1]-GetNumberOfModulesPhi() * GetNumberOfModulesZ(); | |
557 | else | |
558 | ppsdmodule = relid[1] ; | |
559 | Int_t modrow = 1+(Int_t)TMath::Ceil( (Float_t)ppsdmodule / GetNumberOfModulesPhi()-1. ) ; | |
560 | Int_t modcol = ppsdmodule - ( modrow - 1 ) * GetNumberOfModulesPhi() ; | |
a3dfe79c | 561 | x0 = ( GetNumberOfModulesPhi() / 2. - modrow + 0.5 ) * GetPPSDModuleSize(0) ; |
562 | z0 = ( GetNumberOfModulesZ() / 2. - modcol + 0.5 ) * GetPPSDModuleSize(2) ; | |
563 | } else { | |
564 | x0 = 0; | |
565 | z0 = 0; | |
566 | } | |
ed4205d8 | 567 | x = - ( nOfPadsPhi/2. - row - 0.5 ) * padsizeX + x0 ; // position of pad with respect |
568 | z = ( nOfPadsZ /2. - column - 0.5 ) * padsizeZ - z0 ; // of center of PHOS module | |
52a36ffd | 569 | } |
2f3366b6 | 570 | } |