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) ; |
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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 ) ; |
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170 | fPHOSAngle[i-1] = - angle ; |
171 | } |
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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 | } |