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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 | // |
710f859a | 27 | //*-- Author: Yves Schutz (SUBATECH) & Dmitri Peressounko (RRC "KI" & SUBATECH) |
d15a28e7 | 28 | |
29 | // --- ROOT system --- | |
30 | ||
31 | #include "TVector3.h" | |
32 | #include "TRotation.h" | |
fa7cce36 | 33 | #include "TFolder.h" |
34 | #include "TROOT.h" | |
d15a28e7 | 35 | |
36 | // --- Standard library --- | |
37 | ||
de9ec31b | 38 | #include <iostream.h> |
4410223b | 39 | #include <stdlib.h> |
d15a28e7 | 40 | |
41 | // --- AliRoot header files --- | |
42 | ||
43 | #include "AliPHOSGeometry.h" | |
468794ea | 44 | #include "AliPHOSEMCAGeometry.h" |
710f859a | 45 | #include "AliPHOSRecPoint.h" |
d15a28e7 | 46 | #include "AliConst.h" |
47 | ||
9ec91567 | 48 | ClassImp(AliPHOSGeometry) ; |
d15a28e7 | 49 | |
a4e98857 | 50 | // these initialisations are needed for a singleton |
9ec91567 | 51 | AliPHOSGeometry * AliPHOSGeometry::fgGeom = 0 ; |
282c5906 | 52 | Bool_t AliPHOSGeometry::fgInit = kFALSE ; |
9ec91567 | 53 | |
d15a28e7 | 54 | //____________________________________________________________________________ |
55 | AliPHOSGeometry::~AliPHOSGeometry(void) | |
56 | { | |
b2a60966 | 57 | // dtor |
58 | ||
52a36ffd | 59 | if (fRotMatrixArray) fRotMatrixArray->Delete() ; |
60 | if (fRotMatrixArray) delete fRotMatrixArray ; | |
fa0bc588 | 61 | if (fPHOSAngle ) delete[] fPHOSAngle ; |
52a36ffd | 62 | } |
52a36ffd | 63 | //____________________________________________________________________________ |
64 | ||
65 | void AliPHOSGeometry::Init(void) | |
66 | { | |
a4e98857 | 67 | // Initializes the PHOS parameters : |
68 | // IHEP is the Protvino CPV (cathode pad chambers) | |
69 | // GPS2 is the Subatech Pre-Shower (two micromegas sandwiching a passive lead converter) | |
70 | // MIXT 4 PHOS modules withe the IHEP CPV qnd one PHOS module with the Subatche Pre-Shower | |
710f859a | 71 | |
72 | fgInit = kTRUE ; | |
73 | ||
74 | fNModules = 5; | |
75 | fAngle = 20; | |
76 | ||
77 | fGeometryEMCA = new AliPHOSEMCAGeometry(); | |
78 | ||
79 | fGeometryCPV = new AliPHOSCPVGeometry (); | |
80 | ||
81 | fGeometrySUPP = new AliPHOSSupportGeometry(); | |
82 | ||
83 | fPHOSAngle = new Float_t[fNModules] ; | |
84 | ||
85 | Float_t * emcParams = fGeometryEMCA->GetEMCParams() ; | |
86 | ||
581e32d4 | 87 | fPHOSParams[0] = TMath::Max((Double_t)fGeometryCPV->GetCPVBoxSize(0)/2., |
88 | (Double_t)(emcParams[0]*(fGeometryCPV->GetCPVBoxSize(1)+emcParams[3]) - | |
710f859a | 89 | emcParams[1]* fGeometryCPV->GetCPVBoxSize(1))/emcParams[3] ) ; |
90 | fPHOSParams[1] = emcParams[1] ; | |
581e32d4 | 91 | fPHOSParams[2] = TMath::Max((Double_t)emcParams[2], (Double_t)fGeometryCPV->GetCPVBoxSize(2)/2.); |
710f859a | 92 | fPHOSParams[3] = emcParams[3] + fGeometryCPV->GetCPVBoxSize(1)/2. ; |
93 | ||
94 | fIPtoUpperCPVsurface = fGeometryEMCA->GetIPtoOuterCoverDistance() - fGeometryCPV->GetCPVBoxSize(1) ; | |
95 | ||
96 | Int_t index ; | |
97 | for ( index = 0; index < fNModules; index++ ) | |
52a36ffd | 98 | fPHOSAngle[index] = 0.0 ; // Module position angles are set in CreateGeometry() |
710f859a | 99 | |
100 | this->SetPHOSAngles() ; | |
101 | fRotMatrixArray = new TObjArray(fNModules) ; | |
102 | ||
52a36ffd | 103 | } |
104 | ||
5ccb0008 | 105 | |
52a36ffd | 106 | //____________________________________________________________________________ |
107 | AliPHOSGeometry * AliPHOSGeometry::GetInstance() | |
108 | { | |
a4e98857 | 109 | // Returns the pointer of the unique instance; singleton specific |
110 | ||
52a36ffd | 111 | return (AliPHOSGeometry *) fgGeom ; |
112 | } | |
113 | ||
114 | //____________________________________________________________________________ | |
115 | AliPHOSGeometry * AliPHOSGeometry::GetInstance(const Text_t* name, const Text_t* title) | |
116 | { | |
117 | // Returns the pointer of the unique instance | |
a4e98857 | 118 | // Creates it with the specified options (name, title) if it does not exist yet |
119 | ||
52a36ffd | 120 | AliPHOSGeometry * rv = 0 ; |
121 | if ( fgGeom == 0 ) { | |
122 | if ( strcmp(name,"") == 0 ) | |
123 | rv = 0 ; | |
124 | else { | |
125 | fgGeom = new AliPHOSGeometry(name, title) ; | |
126 | if ( fgInit ) | |
127 | rv = (AliPHOSGeometry * ) fgGeom ; | |
128 | else { | |
129 | rv = 0 ; | |
130 | delete fgGeom ; | |
131 | fgGeom = 0 ; | |
132 | } | |
133 | } | |
134 | } | |
135 | else { | |
136 | if ( strcmp(fgGeom->GetName(), name) != 0 ) { | |
137 | cout << "AliPHOSGeometry <E> : current geometry is " << fgGeom->GetName() << endl | |
138 | << " you cannot call " << name << endl ; | |
139 | } | |
140 | else | |
141 | rv = (AliPHOSGeometry *) fgGeom ; | |
142 | } | |
143 | return rv ; | |
144 | } | |
4697edca | 145 | |
52a36ffd | 146 | //____________________________________________________________________________ |
147 | void AliPHOSGeometry::SetPHOSAngles() | |
148 | { | |
a4e98857 | 149 | // Calculates the position of the PHOS modules in ALICE global coordinate system |
52a36ffd | 150 | |
151 | Double_t const kRADDEG = 180.0 / kPI ; | |
710f859a | 152 | Float_t pphi = 2 * TMath::ATan( GetOuterBoxSize(0) / ( 2.0 * GetIPtoUpperCPVsurface() ) ) ; |
52a36ffd | 153 | pphi *= kRADDEG ; |
710f859a | 154 | if (pphi > fAngle){ |
155 | cout << "AliPHOSGeometry: PHOS modules overlap!\n"; | |
156 | cout << "pphi = " << pphi << " fAngle " << fAngle << endl ; | |
157 | ||
158 | } | |
ed4205d8 | 159 | pphi = fAngle; |
52a36ffd | 160 | |
161 | for( Int_t i = 1; i <= fNModules ; i++ ) { | |
ed4205d8 | 162 | Float_t angle = pphi * ( i - fNModules / 2.0 - 0.5 ) ; |
52a36ffd | 163 | fPHOSAngle[i-1] = - angle ; |
164 | } | |
d15a28e7 | 165 | } |
166 | ||
167 | //____________________________________________________________________________ | |
7b7c1533 | 168 | Bool_t AliPHOSGeometry::AbsToRelNumbering(const Int_t AbsId, Int_t * relid) const |
d15a28e7 | 169 | { |
b2a60966 | 170 | // Converts the absolute numbering into the following array/ |
171 | // relid[0] = PHOS Module number 1:fNModules | |
172 | // relid[1] = 0 if PbW04 | |
710f859a | 173 | // = -1 if CPV |
174 | // relid[2] = Row number inside a PHOS module | |
175 | // relid[3] = Column number inside a PHOS module | |
d15a28e7 | 176 | |
177 | Bool_t rv = kTRUE ; | |
92862013 | 178 | Float_t id = AbsId ; |
d15a28e7 | 179 | |
710f859a | 180 | Int_t phosmodulenumber = (Int_t)TMath:: Ceil( id / GetNCristalsInModule() ) ; |
d15a28e7 | 181 | |
710f859a | 182 | if ( phosmodulenumber > GetNModules() ) { // it is a CPV pad |
183 | ||
184 | id -= GetNPhi() * GetNZ() * GetNModules() ; | |
185 | Float_t nCPV = GetNumberOfCPVPadsPhi() * GetNumberOfCPVPadsZ() ; | |
186 | relid[0] = (Int_t) TMath::Ceil( id / nCPV ) ; | |
187 | relid[1] = -1 ; | |
188 | id -= ( relid[0] - 1 ) * nCPV ; | |
189 | relid[2] = (Int_t) TMath::Ceil( id / GetNumberOfCPVPadsZ() ) ; | |
190 | relid[3] = (Int_t) ( id - ( relid[2] - 1 ) * GetNumberOfCPVPadsZ() ) ; | |
d15a28e7 | 191 | } |
710f859a | 192 | else { // it is a PW04 crystal |
d15a28e7 | 193 | |
92862013 | 194 | relid[0] = phosmodulenumber ; |
195 | relid[1] = 0 ; | |
196 | id -= ( phosmodulenumber - 1 ) * GetNPhi() * GetNZ() ; | |
710f859a | 197 | relid[2] = (Int_t)TMath::Ceil( id / GetNZ() ) ; |
198 | relid[3] = (Int_t)( id - ( relid[2] - 1 ) * GetNZ() ) ; | |
d15a28e7 | 199 | } |
200 | return rv ; | |
201 | } | |
52a36ffd | 202 | |
9f616d61 | 203 | //____________________________________________________________________________ |
7b7c1533 | 204 | void AliPHOSGeometry::EmcModuleCoverage(const Int_t mod, Double_t & tm, Double_t & tM, Double_t & pm, Double_t & pM, Option_t * opt) const |
9f616d61 | 205 | { |
a4e98857 | 206 | // calculates the angular coverage in theta and phi of one EMC (=PHOS) module |
9f616d61 | 207 | |
208 | Double_t conv ; | |
cf0c2bc1 | 209 | if ( opt == Radian() ) |
9f616d61 | 210 | conv = 1. ; |
cf0c2bc1 | 211 | else if ( opt == Degre() ) |
9f616d61 | 212 | conv = 180. / TMath::Pi() ; |
213 | else { | |
214 | cout << "<I> AliPHOSGeometry::EmcXtalCoverage : " << opt << " unknown option; result in radian " << endl ; | |
215 | conv = 1. ; | |
216 | } | |
217 | ||
710f859a | 218 | Float_t phi = GetPHOSAngle(mod) * (TMath::Pi() / 180.) ; |
219 | Float_t y0 = GetIPtoCrystalSurface() ; | |
220 | Float_t * strip = fGeometryEMCA->GetStripHalfSize() ; | |
221 | Float_t x0 = fGeometryEMCA->GetNStripX()*strip[0] ; | |
222 | Float_t z0 = fGeometryEMCA->GetNStripZ()*strip[2] ; | |
223 | Double_t angle = TMath::ATan( x0 / y0 ) ; | |
224 | phi = phi + 1.5 * TMath::Pi() ; // to follow the convention of the particle generator(PHOS is between 220 and 320 deg.) | |
92862013 | 225 | Double_t max = phi - angle ; |
226 | Double_t min = phi + angle ; | |
227 | pM = TMath::Max(max, min) * conv ; | |
228 | pm = TMath::Min(max, min) * conv ; | |
9f616d61 | 229 | |
710f859a | 230 | angle = TMath::ATan( z0 / y0 ) ; |
92862013 | 231 | max = TMath::Pi() / 2. + angle ; // to follow the convention of the particle generator(PHOS is at 90 deg.) |
232 | min = TMath::Pi() / 2. - angle ; | |
233 | tM = TMath::Max(max, min) * conv ; | |
234 | tm = TMath::Min(max, min) * conv ; | |
9f616d61 | 235 | |
236 | } | |
237 | ||
238 | //____________________________________________________________________________ | |
7b7c1533 | 239 | void AliPHOSGeometry::EmcXtalCoverage(Double_t & theta, Double_t & phi, Option_t * opt) const |
9f616d61 | 240 | { |
a4e98857 | 241 | // calculates the angular coverage in theta and phi of a single crystal in a EMC(=PHOS) module |
9f616d61 | 242 | |
243 | Double_t conv ; | |
cf0c2bc1 | 244 | if ( opt == Radian() ) |
9f616d61 | 245 | conv = 1. ; |
cf0c2bc1 | 246 | else if ( opt == Degre() ) |
9f616d61 | 247 | conv = 180. / TMath::Pi() ; |
248 | else { | |
249 | cout << "<I> AliPHOSGeometry::EmcXtalCoverage : " << opt << " unknown option; result in radian " << endl ; | |
250 | conv = 1. ; | |
251 | } | |
252 | ||
710f859a | 253 | Float_t y0 = GetIPtoCrystalSurface() ; |
92862013 | 254 | theta = 2 * TMath::ATan( GetCrystalSize(2) / (2 * y0) ) * conv ; |
255 | phi = 2 * TMath::ATan( GetCrystalSize(0) / (2 * y0) ) * conv ; | |
9f616d61 | 256 | } |
257 | ||
258 | ||
259 | //____________________________________________________________________________ | |
52a36ffd | 260 | void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos, TMatrix & gmat) const |
d15a28e7 | 261 | { |
a4e98857 | 262 | // Calculates the coordinates of a RecPoint and the error matrix in the ALICE global coordinate system |
b2a60966 | 263 | |
d15a28e7 | 264 | AliPHOSRecPoint * tmpPHOS = (AliPHOSRecPoint *) RecPoint ; |
92862013 | 265 | TVector3 localposition ; |
d15a28e7 | 266 | |
267 | tmpPHOS->GetLocalPosition(gpos) ; | |
268 | ||
269 | ||
270 | if ( tmpPHOS->IsEmc() ) // it is a EMC crystal | |
710f859a | 271 | { gpos.SetY( - GetIPtoCrystalSurface()) ; |
d15a28e7 | 272 | |
273 | } | |
274 | else | |
710f859a | 275 | { // it is a CPV |
276 | gpos.SetY(- GetIPtoUpperCPVsurface() ) ; | |
d15a28e7 | 277 | } |
278 | ||
92862013 | 279 | Float_t phi = GetPHOSAngle( tmpPHOS->GetPHOSMod()) ; |
280 | Double_t const kRADDEG = 180.0 / kPI ; | |
281 | Float_t rphi = phi / kRADDEG ; | |
d15a28e7 | 282 | |
92862013 | 283 | TRotation rot ; |
284 | rot.RotateZ(-rphi) ; // a rotation around Z by angle | |
d15a28e7 | 285 | |
92862013 | 286 | TRotation dummy = rot.Invert() ; // to transform from original frame to rotate frame |
287 | gpos.Transform(rot) ; // rotate the baby | |
6ad0bfa0 | 288 | |
d15a28e7 | 289 | } |
290 | ||
291 | //____________________________________________________________________________ | |
5cda30f6 | 292 | void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos) const |
d15a28e7 | 293 | { |
a4e98857 | 294 | // Calculates the coordinates of a RecPoint in the ALICE global coordinate system |
b2a60966 | 295 | |
d15a28e7 | 296 | AliPHOSRecPoint * tmpPHOS = (AliPHOSRecPoint *) RecPoint ; |
92862013 | 297 | TVector3 localposition ; |
d15a28e7 | 298 | tmpPHOS->GetLocalPosition(gpos) ; |
299 | ||
300 | ||
301 | if ( tmpPHOS->IsEmc() ) // it is a EMC crystal | |
710f859a | 302 | { gpos.SetY( - GetIPtoCrystalSurface() ) ; |
d15a28e7 | 303 | } |
304 | else | |
710f859a | 305 | { // it is a CPV |
306 | gpos.SetY(- GetIPtoUpperCPVsurface() ) ; | |
d15a28e7 | 307 | } |
308 | ||
92862013 | 309 | Float_t phi = GetPHOSAngle( tmpPHOS->GetPHOSMod()) ; |
310 | Double_t const kRADDEG = 180.0 / kPI ; | |
311 | Float_t rphi = phi / kRADDEG ; | |
d15a28e7 | 312 | |
92862013 | 313 | TRotation rot ; |
314 | rot.RotateZ(-rphi) ; // a rotation around Z by angle | |
d15a28e7 | 315 | |
92862013 | 316 | TRotation dummy = rot.Invert() ; // to transform from original frame to rotate frame |
317 | gpos.Transform(rot) ; // rotate the baby | |
d15a28e7 | 318 | } |
319 | ||
320 | //____________________________________________________________________________ | |
7b7c1533 | 321 | void AliPHOSGeometry::ImpactOnEmc(const Double_t theta, const Double_t phi, Int_t & ModuleNumber, Double_t & z, Double_t & x) const |
d15a28e7 | 322 | { |
a4e98857 | 323 | // calculates the impact coordinates on PHOS of a neutral particle |
324 | // emitted in the direction theta and phi in the ALICE global coordinate system | |
d15a28e7 | 325 | |
52a36ffd | 326 | // searches for the PHOS EMC module |
327 | ModuleNumber = 0 ; | |
328 | Double_t tm, tM, pm, pM ; | |
329 | Int_t index = 1 ; | |
330 | while ( ModuleNumber == 0 && index <= GetNModules() ) { | |
331 | EmcModuleCoverage(index, tm, tM, pm, pM) ; | |
332 | if ( (theta >= tm && theta <= tM) && (phi >= pm && phi <= pM ) ) | |
333 | ModuleNumber = index ; | |
334 | index++ ; | |
d15a28e7 | 335 | } |
52a36ffd | 336 | if ( ModuleNumber != 0 ) { |
337 | Float_t phi0 = GetPHOSAngle(ModuleNumber) * (TMath::Pi() / 180.) + 1.5 * TMath::Pi() ; | |
710f859a | 338 | Float_t y0 = GetIPtoCrystalSurface() ; |
52a36ffd | 339 | Double_t angle = phi - phi0; |
340 | x = y0 * TMath::Tan(angle) ; | |
341 | angle = theta - TMath::Pi() / 2 ; | |
342 | z = y0 * TMath::Tan(angle) ; | |
d15a28e7 | 343 | } |
d15a28e7 | 344 | } |
345 | ||
1c9d8212 | 346 | Bool_t AliPHOSGeometry::Impact(const TParticle * particle) const |
347 | { | |
348 | Bool_t In=kFALSE; | |
349 | Int_t ModuleNumber=0; | |
350 | Double_t z,x; | |
351 | ImpactOnEmc(particle->Theta(),particle->Phi(),ModuleNumber,z,x); | |
352 | if(ModuleNumber) In=kTRUE; | |
353 | else In=kFALSE; | |
354 | return In; | |
355 | } | |
356 | ||
d15a28e7 | 357 | //____________________________________________________________________________ |
7b7c1533 | 358 | Bool_t AliPHOSGeometry::RelToAbsNumbering(const Int_t * relid, Int_t & AbsId) const |
d15a28e7 | 359 | { |
b2a60966 | 360 | // Converts the relative numbering into the absolute numbering |
ed4205d8 | 361 | // EMCA crystals: |
362 | // AbsId = from 1 to fNModules * fNPhi * fNZ | |
ed4205d8 | 363 | // CPV pad: |
364 | // AbsId = from N(total PHOS crystals) + 1 | |
365 | // to NCPVModules * fNumberOfCPVPadsPhi * fNumberOfCPVPadsZ | |
d15a28e7 | 366 | |
367 | Bool_t rv = kTRUE ; | |
710f859a | 368 | |
369 | if ( relid[1] == 0 ) { // it is a Phos crystal | |
52a36ffd | 370 | AbsId = |
710f859a | 371 | ( relid[0] - 1 ) * GetNPhi() * GetNZ() // the offset of PHOS modules |
372 | + ( relid[2] - 1 ) * GetNZ() // the offset along phi | |
373 | + relid[3] ; // the offset along z | |
d15a28e7 | 374 | } |
710f859a | 375 | else { // it is a CPV pad |
376 | AbsId = GetNPhi() * GetNZ() * GetNModules() // the offset to separate EMCA crystals from CPV pads | |
377 | + ( relid[0] - 1 ) * GetNumberOfCPVPadsPhi() * GetNumberOfCPVPadsZ() // the pads offset of PHOS modules | |
378 | + ( relid[2] - 1 ) * GetNumberOfCPVPadsZ() // the pads offset of a CPV row | |
52a36ffd | 379 | + relid[3] ; // the column number |
380 | } | |
381 | ||
d15a28e7 | 382 | return rv ; |
383 | } | |
384 | ||
385 | //____________________________________________________________________________ | |
386 | ||
7b7c1533 | 387 | void AliPHOSGeometry::RelPosInAlice(const Int_t id, TVector3 & pos ) const |
d15a28e7 | 388 | { |
a4e98857 | 389 | // Converts the absolute numbering into the global ALICE coordinate system |
b2a60966 | 390 | |
ed4205d8 | 391 | |
392 | Int_t relid[4] ; | |
393 | ||
394 | AbsToRelNumbering(id , relid) ; | |
395 | ||
396 | Int_t phosmodule = relid[0] ; | |
397 | ||
398 | Float_t y0 = 0 ; | |
399 | ||
710f859a | 400 | if ( relid[1] == 0 ) // it is a PbW04 crystal |
401 | y0 = - GetIPtoCrystalSurface() ; | |
402 | else | |
403 | y0 = - GetIPtoUpperCPVsurface() ; | |
404 | ||
ed4205d8 | 405 | Float_t x, z ; |
406 | RelPosInModule(relid, x, z) ; | |
407 | ||
408 | pos.SetX(x) ; | |
409 | pos.SetZ(z) ; | |
710f859a | 410 | pos.SetY(y0) ; |
ed4205d8 | 411 | |
412 | Float_t phi = GetPHOSAngle( phosmodule) ; | |
413 | Double_t const kRADDEG = 180.0 / kPI ; | |
414 | Float_t rphi = phi / kRADDEG ; | |
415 | ||
416 | TRotation rot ; | |
417 | rot.RotateZ(-rphi) ; // a rotation around Z by angle | |
418 | ||
419 | TRotation dummy = rot.Invert() ; // to transform from original frame to rotate frame | |
420 | ||
421 | pos.Transform(rot) ; // rotate the baby | |
d15a28e7 | 422 | } |
423 | ||
424 | //____________________________________________________________________________ | |
7b7c1533 | 425 | void AliPHOSGeometry::RelPosInModule(const Int_t * relid, Float_t & x, Float_t & z) const |
d15a28e7 | 426 | { |
b2a60966 | 427 | // Converts the relative numbering into the local PHOS-module (x, z) coordinates |
52a36ffd | 428 | // Note: sign of z differs from that in the previous version (Yu.Kharlov, 12 Oct 2000) |
b2a60966 | 429 | |
786222b3 | 430 | Int_t row = relid[2] ; //offset along x axis |
431 | Int_t column = relid[3] ; //offset along z axis | |
d15a28e7 | 432 | |
ed4205d8 | 433 | |
92862013 | 434 | if ( relid[1] == 0 ) { // its a PbW04 crystal |
786222b3 | 435 | x = - ( GetNPhi()/2. - row + 0.5 ) * GetCrystalSize(0) ; // position of Xtal with respect |
52a36ffd | 436 | z = ( GetNZ() /2. - column + 0.5 ) * GetCrystalSize(2) ; // of center of PHOS module |
437 | } | |
438 | else { | |
710f859a | 439 | x = - ( GetNumberOfCPVPadsPhi()/2. - row - 0.5 ) * GetPadSizePhi() ; // position of pad with respect |
440 | z = ( GetNumberOfCPVPadsZ() /2. - column - 0.5 ) * GetPadSizeZ() ; // of center of PHOS module | |
52a36ffd | 441 | } |
2f3366b6 | 442 | } |