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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" | |
41 | #include "AliPHOSPpsdRecPoint.h" | |
42 | #include "AliConst.h" | |
43 | ||
9ec91567 | 44 | ClassImp(AliPHOSGeometry) ; |
d15a28e7 | 45 | |
9ec91567 | 46 | AliPHOSGeometry * AliPHOSGeometry::fgGeom = 0 ; |
282c5906 | 47 | Bool_t AliPHOSGeometry::fgInit = kFALSE ; |
9ec91567 | 48 | |
d15a28e7 | 49 | //____________________________________________________________________________ |
50 | AliPHOSGeometry::~AliPHOSGeometry(void) | |
51 | { | |
b2a60966 | 52 | // dtor |
53 | ||
52a36ffd | 54 | if (fRotMatrixArray) fRotMatrixArray->Delete() ; |
55 | if (fRotMatrixArray) delete fRotMatrixArray ; | |
56 | if (fPHOSAngle ) delete fPHOSAngle ; | |
eb92d866 | 57 | // if (fGeometryEMCA ) detete fGeometryEMCA; |
58 | // if (fGeometryCPV ) detete fGeometryCPV ; | |
52a36ffd | 59 | } |
60 | ||
61 | //____________________________________________________________________________ | |
62 | ||
63 | void AliPHOSGeometry::Init(void) | |
64 | { | |
65 | // Initializes the PHOS parameters | |
66 | ||
52a36ffd | 67 | if ( ((strcmp( fName, "default" )) == 0) || |
68 | ((strcmp( fName, "GPS2" )) == 0) || | |
69 | ((strcmp( fName, "IHEP" )) == 0) ) { | |
70 | fgInit = kTRUE ; | |
eb92d866 | 71 | fGeometryEMCA = new AliPHOSEMCAGeometry(); |
72 | if ( ((strcmp( fName, "GPS2" )) == 0) ) fGeometryCPV = new AliPHOSPPSDGeometry(); | |
73 | if ( ((strcmp( fName, "IHEP" )) == 0) ) fGeometryCPV = new AliPHOSCPVGeometry (); | |
ed19b2e1 | 74 | fGeometrySUPP = new AliPHOSSupportGeometry(); |
52a36ffd | 75 | fNModules = 5; |
76 | fPHOSAngle = new Float_t[fNModules] ; | |
77 | Int_t index ; | |
78 | for ( index = 0; index < fNModules; index++ ) | |
79 | fPHOSAngle[index] = 0.0 ; // Module position angles are set in CreateGeometry() | |
80 | ||
81 | this->SetPHOSAngles() ; | |
82 | fRotMatrixArray = new TObjArray(fNModules) ; | |
83 | } | |
84 | else { | |
85 | fgInit = kFALSE ; | |
86 | cout << "PHOS Geometry setup: option not defined " << fName << endl ; | |
87 | } | |
88 | } | |
89 | ||
90 | //____________________________________________________________________________ | |
91 | AliPHOSGeometry * AliPHOSGeometry::GetInstance() | |
92 | { | |
93 | // Returns the pointer of the unique instance | |
94 | return (AliPHOSGeometry *) fgGeom ; | |
95 | } | |
96 | ||
97 | //____________________________________________________________________________ | |
98 | AliPHOSGeometry * AliPHOSGeometry::GetInstance(const Text_t* name, const Text_t* title) | |
99 | { | |
100 | // Returns the pointer of the unique instance | |
101 | AliPHOSGeometry * rv = 0 ; | |
102 | if ( fgGeom == 0 ) { | |
103 | if ( strcmp(name,"") == 0 ) | |
104 | rv = 0 ; | |
105 | else { | |
106 | fgGeom = new AliPHOSGeometry(name, title) ; | |
107 | if ( fgInit ) | |
108 | rv = (AliPHOSGeometry * ) fgGeom ; | |
109 | else { | |
110 | rv = 0 ; | |
111 | delete fgGeom ; | |
112 | fgGeom = 0 ; | |
113 | } | |
114 | } | |
115 | } | |
116 | else { | |
117 | if ( strcmp(fgGeom->GetName(), name) != 0 ) { | |
118 | cout << "AliPHOSGeometry <E> : current geometry is " << fgGeom->GetName() << endl | |
119 | << " you cannot call " << name << endl ; | |
120 | } | |
121 | else | |
122 | rv = (AliPHOSGeometry *) fgGeom ; | |
123 | } | |
124 | return rv ; | |
125 | } | |
4697edca | 126 | |
52a36ffd | 127 | //____________________________________________________________________________ |
128 | void AliPHOSGeometry::SetPHOSAngles() | |
129 | { | |
130 | // Calculates the position in ALICE of the PHOS modules | |
131 | ||
132 | Double_t const kRADDEG = 180.0 / kPI ; | |
133 | Float_t pphi = TMath::ATan( GetOuterBoxSize(0) / ( 2.0 * GetIPtoOuterCoverDistance() ) ) ; | |
134 | pphi *= kRADDEG ; | |
135 | ||
136 | for( Int_t i = 1; i <= fNModules ; i++ ) { | |
137 | Float_t angle = pphi * 2 * ( i - fNModules / 2.0 - 0.5 ) ; | |
138 | fPHOSAngle[i-1] = - angle ; | |
139 | } | |
d15a28e7 | 140 | } |
141 | ||
142 | //____________________________________________________________________________ | |
92862013 | 143 | Bool_t AliPHOSGeometry::AbsToRelNumbering(const Int_t AbsId, Int_t * relid) |
d15a28e7 | 144 | { |
b2a60966 | 145 | // Converts the absolute numbering into the following array/ |
146 | // relid[0] = PHOS Module number 1:fNModules | |
147 | // relid[1] = 0 if PbW04 | |
148 | // = PPSD Module number 1:fNumberOfModulesPhi*fNumberOfModulesZ*2 (2->up and bottom level) | |
149 | // relid[2] = Row number inside a PHOS or PPSD module | |
150 | // relid[3] = Column number inside a PHOS or PPSD module | |
d15a28e7 | 151 | |
152 | Bool_t rv = kTRUE ; | |
92862013 | 153 | Float_t id = AbsId ; |
d15a28e7 | 154 | |
92862013 | 155 | Int_t phosmodulenumber = (Int_t)TMath:: Ceil( id / ( GetNPhi() * GetNZ() ) ) ; |
d15a28e7 | 156 | |
52a36ffd | 157 | if ( phosmodulenumber > GetNModules() ) { // it is a PPSD or CPV pad |
158 | ||
159 | if ( strcmp(fName,"GPS2") == 0 ) { | |
160 | id -= GetNPhi() * GetNZ() * GetNModules() ; | |
161 | Float_t tempo = 2 * GetNumberOfModulesPhi() * GetNumberOfModulesZ() * GetNumberOfPadsPhi() * GetNumberOfPadsZ() ; | |
162 | relid[0] = (Int_t)TMath::Ceil( id / tempo ) ; | |
163 | id -= ( relid[0] - 1 ) * tempo ; | |
164 | relid[1] = (Int_t)TMath::Ceil( id / ( GetNumberOfPadsPhi() * GetNumberOfPadsZ() ) ) ; | |
165 | id -= ( relid[1] - 1 ) * GetNumberOfPadsPhi() * GetNumberOfPadsZ() ; | |
166 | relid[2] = (Int_t)TMath::Ceil( id / GetNumberOfPadsPhi() ) ; | |
167 | relid[3] = (Int_t) ( id - ( relid[2] - 1 ) * GetNumberOfPadsPhi() ) ; | |
168 | } | |
169 | else if ( strcmp(fName,"IHEP") == 0 ) { | |
170 | id -= GetNPhi() * GetNZ() * GetNModules() ; | |
171 | relid[0] = (Int_t) TMath::Ceil( id / ( GetNumberOfPadsPhi() * GetNumberOfPadsZ() ) ) ; | |
172 | relid[1] = 1 ; | |
173 | id -= ( relid[0] - 1 ) * GetNumberOfPadsPhi() * GetNumberOfPadsZ() ; | |
174 | relid[2] = (Int_t) TMath::Ceil( id / GetNumberOfPadsZ() ) ; | |
175 | relid[3] = (Int_t) ( id - ( relid[2] - 1 ) * GetNumberOfPadsZ() ) ; | |
176 | } | |
d15a28e7 | 177 | } |
178 | else { // its a PW04 crystal | |
179 | ||
92862013 | 180 | relid[0] = phosmodulenumber ; |
181 | relid[1] = 0 ; | |
182 | id -= ( phosmodulenumber - 1 ) * GetNPhi() * GetNZ() ; | |
183 | relid[2] = (Int_t)TMath::Ceil( id / GetNPhi() ) ; | |
184 | relid[3] = (Int_t)( id - ( relid[2] - 1 ) * GetNPhi() ) ; | |
d15a28e7 | 185 | } |
186 | return rv ; | |
187 | } | |
52a36ffd | 188 | |
9f616d61 | 189 | //____________________________________________________________________________ |
190 | void AliPHOSGeometry::EmcModuleCoverage(const Int_t mod, Double_t & tm, Double_t & tM, Double_t & pm, Double_t & pM, Option_t * opt) | |
191 | { | |
192 | // calculates the angular coverage in theta and phi of a EMC module | |
193 | ||
194 | Double_t conv ; | |
cf0c2bc1 | 195 | if ( opt == Radian() ) |
9f616d61 | 196 | conv = 1. ; |
cf0c2bc1 | 197 | else if ( opt == Degre() ) |
9f616d61 | 198 | conv = 180. / TMath::Pi() ; |
199 | else { | |
200 | cout << "<I> AliPHOSGeometry::EmcXtalCoverage : " << opt << " unknown option; result in radian " << endl ; | |
201 | conv = 1. ; | |
202 | } | |
203 | ||
204 | Float_t phi = GetPHOSAngle(mod) * (TMath::Pi() / 180.) ; | |
92862013 | 205 | Float_t y0 = GetIPtoOuterCoverDistance() + GetUpperPlateThickness() |
9f616d61 | 206 | + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness() ; |
207 | ||
92862013 | 208 | Double_t angle = TMath::ATan( GetCrystalSize(0)*GetNPhi() / (2 * y0) ) ; |
9f616d61 | 209 | phi = phi + 1.5 * TMath::Pi() ; // to follow the convention of the particle generator(PHOS is between 230 and 310 deg.) |
92862013 | 210 | Double_t max = phi - angle ; |
211 | Double_t min = phi + angle ; | |
212 | pM = TMath::Max(max, min) * conv ; | |
213 | pm = TMath::Min(max, min) * conv ; | |
9f616d61 | 214 | |
92862013 | 215 | angle = TMath::ATan( GetCrystalSize(2)*GetNZ() / (2 * y0) ) ; |
216 | max = TMath::Pi() / 2. + angle ; // to follow the convention of the particle generator(PHOS is at 90 deg.) | |
217 | min = TMath::Pi() / 2. - angle ; | |
218 | tM = TMath::Max(max, min) * conv ; | |
219 | tm = TMath::Min(max, min) * conv ; | |
9f616d61 | 220 | |
221 | } | |
222 | ||
223 | //____________________________________________________________________________ | |
224 | void AliPHOSGeometry::EmcXtalCoverage(Double_t & theta, Double_t & phi, Option_t * opt) | |
225 | { | |
226 | // calculates the angular coverage in theta and phi of a single crystal in a EMC module | |
227 | ||
228 | Double_t conv ; | |
cf0c2bc1 | 229 | if ( opt == Radian() ) |
9f616d61 | 230 | conv = 1. ; |
cf0c2bc1 | 231 | else if ( opt == Degre() ) |
9f616d61 | 232 | conv = 180. / TMath::Pi() ; |
233 | else { | |
234 | cout << "<I> AliPHOSGeometry::EmcXtalCoverage : " << opt << " unknown option; result in radian " << endl ; | |
235 | conv = 1. ; | |
236 | } | |
237 | ||
92862013 | 238 | Float_t y0 = GetIPtoOuterCoverDistance() + GetUpperPlateThickness() |
9f616d61 | 239 | + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness() ; |
92862013 | 240 | theta = 2 * TMath::ATan( GetCrystalSize(2) / (2 * y0) ) * conv ; |
241 | phi = 2 * TMath::ATan( GetCrystalSize(0) / (2 * y0) ) * conv ; | |
9f616d61 | 242 | } |
243 | ||
244 | ||
245 | //____________________________________________________________________________ | |
52a36ffd | 246 | void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos, TMatrix & gmat) const |
d15a28e7 | 247 | { |
b2a60966 | 248 | // Calculates the ALICE global coordinates of a RecPoint and the error matrix |
249 | ||
d15a28e7 | 250 | AliPHOSRecPoint * tmpPHOS = (AliPHOSRecPoint *) RecPoint ; |
92862013 | 251 | TVector3 localposition ; |
d15a28e7 | 252 | |
253 | tmpPHOS->GetLocalPosition(gpos) ; | |
254 | ||
255 | ||
256 | if ( tmpPHOS->IsEmc() ) // it is a EMC crystal | |
257 | { gpos.SetY( -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness() + | |
258 | GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ) ; | |
259 | ||
260 | } | |
261 | else | |
262 | { // it is a PPSD pad | |
263 | AliPHOSPpsdRecPoint * tmpPpsd = (AliPHOSPpsdRecPoint *) RecPoint ; | |
264 | if (tmpPpsd->GetUp() ) // it is an upper module | |
265 | { | |
266 | gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() - | |
267 | GetLeadToMicro2Gap() - GetLeadConverterThickness() - | |
268 | GetMicro1ToLeadGap() - GetMicromegas1Thickness() / 2.0 ) ) ; | |
269 | } | |
270 | else // it is a lower module | |
271 | gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() / 2.0) ) ; | |
272 | } | |
273 | ||
92862013 | 274 | Float_t phi = GetPHOSAngle( tmpPHOS->GetPHOSMod()) ; |
275 | Double_t const kRADDEG = 180.0 / kPI ; | |
276 | Float_t rphi = phi / kRADDEG ; | |
d15a28e7 | 277 | |
92862013 | 278 | TRotation rot ; |
279 | rot.RotateZ(-rphi) ; // a rotation around Z by angle | |
d15a28e7 | 280 | |
92862013 | 281 | TRotation dummy = rot.Invert() ; // to transform from original frame to rotate frame |
282 | gpos.Transform(rot) ; // rotate the baby | |
6ad0bfa0 | 283 | |
d15a28e7 | 284 | } |
285 | ||
286 | //____________________________________________________________________________ | |
5cda30f6 | 287 | void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos) const |
d15a28e7 | 288 | { |
b2a60966 | 289 | // Calculates the ALICE global coordinates of a RecPoint |
290 | ||
d15a28e7 | 291 | AliPHOSRecPoint * tmpPHOS = (AliPHOSRecPoint *) RecPoint ; |
92862013 | 292 | TVector3 localposition ; |
d15a28e7 | 293 | tmpPHOS->GetLocalPosition(gpos) ; |
294 | ||
295 | ||
296 | if ( tmpPHOS->IsEmc() ) // it is a EMC crystal | |
297 | { gpos.SetY( -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness() + | |
298 | GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ) ; | |
299 | } | |
300 | else | |
301 | { // it is a PPSD pad | |
302 | AliPHOSPpsdRecPoint * tmpPpsd = (AliPHOSPpsdRecPoint *) RecPoint ; | |
303 | if (tmpPpsd->GetUp() ) // it is an upper module | |
304 | { | |
305 | gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() - | |
306 | GetLeadToMicro2Gap() - GetLeadConverterThickness() - | |
307 | GetMicro1ToLeadGap() - GetMicromegas1Thickness() / 2.0 ) ) ; | |
308 | } | |
309 | else // it is a lower module | |
310 | gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() / 2.0) ) ; | |
311 | } | |
312 | ||
92862013 | 313 | Float_t phi = GetPHOSAngle( tmpPHOS->GetPHOSMod()) ; |
314 | Double_t const kRADDEG = 180.0 / kPI ; | |
315 | Float_t rphi = phi / kRADDEG ; | |
d15a28e7 | 316 | |
92862013 | 317 | TRotation rot ; |
318 | rot.RotateZ(-rphi) ; // a rotation around Z by angle | |
d15a28e7 | 319 | |
92862013 | 320 | TRotation dummy = rot.Invert() ; // to transform from original frame to rotate frame |
321 | gpos.Transform(rot) ; // rotate the baby | |
d15a28e7 | 322 | } |
323 | ||
324 | //____________________________________________________________________________ | |
52a36ffd | 325 | void AliPHOSGeometry::ImpactOnEmc(const Double_t theta, const Double_t phi, Int_t & ModuleNumber, Double_t & z, Double_t & x) |
d15a28e7 | 326 | { |
52a36ffd | 327 | // calculates the impact coordinates of a neutral particle |
328 | // emitted in direction theta and phi in ALICE | |
d15a28e7 | 329 | |
52a36ffd | 330 | // searches for the PHOS EMC module |
331 | ModuleNumber = 0 ; | |
332 | Double_t tm, tM, pm, pM ; | |
333 | Int_t index = 1 ; | |
334 | while ( ModuleNumber == 0 && index <= GetNModules() ) { | |
335 | EmcModuleCoverage(index, tm, tM, pm, pM) ; | |
336 | if ( (theta >= tm && theta <= tM) && (phi >= pm && phi <= pM ) ) | |
337 | ModuleNumber = index ; | |
338 | index++ ; | |
d15a28e7 | 339 | } |
52a36ffd | 340 | if ( ModuleNumber != 0 ) { |
341 | Float_t phi0 = GetPHOSAngle(ModuleNumber) * (TMath::Pi() / 180.) + 1.5 * TMath::Pi() ; | |
342 | Float_t y0 = GetIPtoOuterCoverDistance() + GetUpperPlateThickness() | |
343 | + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness() ; | |
344 | Double_t angle = phi - phi0; | |
345 | x = y0 * TMath::Tan(angle) ; | |
346 | angle = theta - TMath::Pi() / 2 ; | |
347 | z = y0 * TMath::Tan(angle) ; | |
d15a28e7 | 348 | } |
d15a28e7 | 349 | } |
350 | ||
351 | //____________________________________________________________________________ | |
92862013 | 352 | Bool_t AliPHOSGeometry::RelToAbsNumbering(const Int_t * relid, Int_t & AbsId) |
d15a28e7 | 353 | { |
b2a60966 | 354 | // Converts the relative numbering into the absolute numbering |
52a36ffd | 355 | // AbsId = 1 to fNModules * fNPhi * fNZ -> PbWO4 |
356 | // AbsId = N(total PHOS crystals) + | |
357 | // 1 to fNModules * 2 * (fNumberOfModulesPhi * fNumberOfModulesZ) * fNumberOfPadsPhi * fNumberOfPadsZ -> PPSD | |
358 | // AbsId = N(total PHOS crystals) + | |
359 | // 1:fNModules * fNumberOfCPVPadsPhi * fNumberOfCPVPadsZ -> CPV | |
d15a28e7 | 360 | |
361 | Bool_t rv = kTRUE ; | |
362 | ||
52a36ffd | 363 | if ( relid[1] > 0 ) { // it is a PPSD pad |
364 | AbsId = GetNPhi() * GetNZ() * GetNModules() // the offset to separate EMCA crystals from PPSD pads | |
92862013 | 365 | + ( relid[0] - 1 ) * GetNumberOfModulesPhi() * GetNumberOfModulesZ() // the pads offset of PHOS modules |
d15a28e7 | 366 | * GetNumberOfPadsPhi() * GetNumberOfPadsZ() * 2 |
92862013 | 367 | + ( relid[1] - 1 ) * GetNumberOfPadsPhi() * GetNumberOfPadsZ() // the pads offset of PPSD modules |
368 | + ( relid[2] - 1 ) * GetNumberOfPadsPhi() // the pads offset of a PPSD row | |
52a36ffd | 369 | + relid[3] ; // the column number |
d15a28e7 | 370 | } |
52a36ffd | 371 | |
372 | else if ( relid[1] == 0 ) { // it is a Phos crystal | |
373 | AbsId = | |
374 | ( relid[0] - 1 ) * GetNPhi() * GetNZ() // the offset of PHOS modules | |
375 | + ( relid[2] - 1 ) * GetNPhi() // the offset of a xtal row | |
376 | + relid[3] ; // the column number | |
d15a28e7 | 377 | } |
378 | ||
52a36ffd | 379 | else if ( relid[1] == -1 ) { // it is a CPV pad |
380 | AbsId = GetNPhi() * GetNZ() * GetNModules() // the offset to separate EMCA crystals from CPV pads | |
381 | + ( relid[0] - 1 ) * GetNumberOfPadsPhi() * GetNumberOfPadsZ() // the pads offset of PHOS modules | |
382 | + ( relid[2] - 1 ) * GetNumberOfPadsZ() // the pads offset of a CPV row | |
383 | + relid[3] ; // the column number | |
384 | } | |
385 | ||
d15a28e7 | 386 | return rv ; |
387 | } | |
388 | ||
389 | //____________________________________________________________________________ | |
390 | ||
92862013 | 391 | void AliPHOSGeometry::RelPosInAlice(const Int_t id, TVector3 & pos ) |
d15a28e7 | 392 | { |
b2a60966 | 393 | // Converts the absolute numbering into the global ALICE coordinates |
394 | ||
92862013 | 395 | if (id > 0) { |
d15a28e7 | 396 | |
92862013 | 397 | Int_t relid[4] ; |
d15a28e7 | 398 | |
92862013 | 399 | AbsToRelNumbering(id , relid) ; |
d15a28e7 | 400 | |
92862013 | 401 | Int_t phosmodule = relid[0] ; |
d15a28e7 | 402 | |
92862013 | 403 | Float_t y0 = 0 ; |
9f616d61 | 404 | |
92862013 | 405 | if ( relid[1] == 0 ) // it is a PbW04 crystal |
406 | { y0 = -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness() | |
9f616d61 | 407 | + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ; |
d15a28e7 | 408 | } |
92862013 | 409 | if ( relid[1] > 0 ) { // its a PPSD pad |
410 | if ( relid[1] > GetNumberOfModulesPhi() * GetNumberOfModulesZ() ) // its an bottom module | |
d15a28e7 | 411 | { |
92862013 | 412 | y0 = -( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() / 2.0) ; |
d15a28e7 | 413 | } |
414 | else // its an upper module | |
92862013 | 415 | y0 = -( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() - GetLeadToMicro2Gap() |
9f616d61 | 416 | - GetLeadConverterThickness() - GetMicro1ToLeadGap() - GetMicromegas1Thickness() / 2.0) ; |
d15a28e7 | 417 | } |
418 | ||
419 | Float_t x, z ; | |
92862013 | 420 | RelPosInModule(relid, x, z) ; |
d15a28e7 | 421 | |
9f616d61 | 422 | pos.SetX(x) ; |
423 | pos.SetZ(z) ; | |
92862013 | 424 | pos.SetY( TMath::Sqrt(x*x + z*z + y0*y0) ) ; |
9f616d61 | 425 | |
d15a28e7 | 426 | |
427 | ||
92862013 | 428 | Float_t phi = GetPHOSAngle( phosmodule) ; |
429 | Double_t const kRADDEG = 180.0 / kPI ; | |
430 | Float_t rphi = phi / kRADDEG ; | |
d15a28e7 | 431 | |
92862013 | 432 | TRotation rot ; |
433 | rot.RotateZ(-rphi) ; // a rotation around Z by angle | |
d15a28e7 | 434 | |
92862013 | 435 | TRotation dummy = rot.Invert() ; // to transform from original frame to rotate frame |
d15a28e7 | 436 | |
92862013 | 437 | pos.Transform(rot) ; // rotate the baby |
d15a28e7 | 438 | } |
439 | else { | |
440 | pos.SetX(0.); | |
441 | pos.SetY(0.); | |
442 | pos.SetZ(0.); | |
443 | } | |
444 | } | |
445 | ||
446 | //____________________________________________________________________________ | |
92862013 | 447 | void AliPHOSGeometry::RelPosInModule(const Int_t * relid, Float_t & x, Float_t & z) |
d15a28e7 | 448 | { |
b2a60966 | 449 | // Converts the relative numbering into the local PHOS-module (x, z) coordinates |
52a36ffd | 450 | // Note: sign of z differs from that in the previous version (Yu.Kharlov, 12 Oct 2000) |
b2a60966 | 451 | |
92862013 | 452 | Int_t ppsdmodule ; |
a3dfe79c | 453 | Float_t x0,z0; |
52a36ffd | 454 | Int_t row = relid[2] ; //offset along x axiz |
455 | Int_t column = relid[3] ; //offset along z axiz | |
d15a28e7 | 456 | |
52a36ffd | 457 | Float_t padsizeZ = GetPadSizeZ(); |
458 | Float_t padsizeX = GetPadSizePhi(); | |
d15a28e7 | 459 | |
92862013 | 460 | if ( relid[1] == 0 ) { // its a PbW04 crystal |
52a36ffd | 461 | x = - ( GetNPhi()/2. - row + 0.5 ) * GetCrystalSize(0) ; // position ox Xtal with respect |
462 | z = ( GetNZ() /2. - column + 0.5 ) * GetCrystalSize(2) ; // of center of PHOS module | |
463 | } | |
464 | else { | |
92862013 | 465 | if ( relid[1] > GetNumberOfModulesPhi() * GetNumberOfModulesZ() ) |
52a36ffd | 466 | ppsdmodule = relid[1]-GetNumberOfModulesPhi() * GetNumberOfModulesZ(); |
467 | else | |
468 | ppsdmodule = relid[1] ; | |
92862013 | 469 | Int_t modrow = 1+(Int_t)TMath::Ceil( (Float_t)ppsdmodule / GetNumberOfModulesPhi()-1. ) ; |
470 | Int_t modcol = ppsdmodule - ( modrow - 1 ) * GetNumberOfModulesPhi() ; | |
a3dfe79c | 471 | if ( ((strcmp( fName, "GPS2" )) == 0) ) { |
472 | x0 = ( GetNumberOfModulesPhi() / 2. - modrow + 0.5 ) * GetPPSDModuleSize(0) ; | |
473 | z0 = ( GetNumberOfModulesZ() / 2. - modcol + 0.5 ) * GetPPSDModuleSize(2) ; | |
474 | } else { | |
475 | x0 = 0; | |
476 | z0 = 0; | |
477 | } | |
52a36ffd | 478 | x = - ( GetNumberOfPadsPhi()/2. - row - 0.5 ) * padsizeX + x0 ; // position of pad with respect |
479 | z = ( GetNumberOfPadsZ() /2. - column - 0.5 ) * padsizeZ - z0 ; // of center of PHOS module | |
480 | } | |
2f3366b6 | 481 | } |