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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 | ||
16 | //_________________________________________________________________________ | |
17 | // Geometry class for PHOS version SUBATECH | |
18 | //*-- Author : Y. Schutz SUBATECH | |
19 | ////////////////////////////////////////////////////////////////////////////// | |
20 | ||
21 | // --- ROOT system --- | |
22 | ||
23 | #include "TVector3.h" | |
24 | #include "TRotation.h" | |
25 | ||
26 | // --- Standard library --- | |
27 | ||
9f616d61 | 28 | #include <iostream> |
29 | #include <cassert> | |
d15a28e7 | 30 | |
31 | // --- AliRoot header files --- | |
32 | ||
33 | #include "AliPHOSGeometry.h" | |
34 | #include "AliPHOSPpsdRecPoint.h" | |
35 | #include "AliConst.h" | |
36 | ||
37 | ClassImp(AliPHOSGeometry) | |
38 | ||
39 | AliPHOSGeometry * AliPHOSGeometry::fGeom = 0 ; | |
40 | ||
41 | //____________________________________________________________________________ | |
42 | AliPHOSGeometry::~AliPHOSGeometry(void) | |
43 | { | |
44 | fRotMatrixArray->Delete() ; | |
45 | delete fRotMatrixArray ; | |
46 | } | |
47 | ||
48 | //____________________________________________________________________________ | |
92862013 | 49 | Bool_t AliPHOSGeometry::AbsToRelNumbering(const Int_t AbsId, Int_t * relid) |
d15a28e7 | 50 | { |
92862013 | 51 | // relid[0] = PHOS Module number 1:fNModules |
52 | // relid[1] = 0 if PbW04 | |
d15a28e7 | 53 | // = PPSD Module number 1:fNumberOfModulesPhi*fNumberOfModulesZ*2 (2->up and bottom level) |
92862013 | 54 | // relid[2] = Row number inside a PHOS or PPSD module |
55 | // relid[3] = Column number inside a PHOS or PPSD module | |
d15a28e7 | 56 | |
57 | Bool_t rv = kTRUE ; | |
92862013 | 58 | Float_t id = AbsId ; |
d15a28e7 | 59 | |
92862013 | 60 | Int_t phosmodulenumber = (Int_t)TMath:: Ceil( id / ( GetNPhi() * GetNZ() ) ) ; |
d15a28e7 | 61 | |
92862013 | 62 | if ( phosmodulenumber > GetNModules() ) { // its a PPSD pad |
d15a28e7 | 63 | |
92862013 | 64 | id -= GetNPhi() * GetNZ() * GetNModules() ; |
d15a28e7 | 65 | Float_t tempo = 2 * GetNumberOfModulesPhi() * GetNumberOfModulesZ() * GetNumberOfPadsPhi() * GetNumberOfPadsZ() ; |
92862013 | 66 | relid[0] = (Int_t)TMath::Ceil( id / tempo ) ; |
67 | id -= ( relid[0] - 1 ) * tempo ; | |
68 | relid[1] = (Int_t)TMath::Ceil( id / ( GetNumberOfPadsPhi() * GetNumberOfPadsZ() ) ) ; | |
69 | id -= ( relid[1] - 1 ) * GetNumberOfPadsPhi() * GetNumberOfPadsZ() ; | |
70 | relid[2] = (Int_t)TMath::Ceil( id / GetNumberOfPadsPhi() ) ; | |
71 | relid[3] = (Int_t) ( id - ( relid[2] - 1 ) * GetNumberOfPadsPhi() ) ; | |
d15a28e7 | 72 | } |
73 | else { // its a PW04 crystal | |
74 | ||
92862013 | 75 | relid[0] = phosmodulenumber ; |
76 | relid[1] = 0 ; | |
77 | id -= ( phosmodulenumber - 1 ) * GetNPhi() * GetNZ() ; | |
78 | relid[2] = (Int_t)TMath::Ceil( id / GetNPhi() ) ; | |
79 | relid[3] = (Int_t)( id - ( relid[2] - 1 ) * GetNPhi() ) ; | |
d15a28e7 | 80 | } |
81 | return rv ; | |
82 | } | |
9f616d61 | 83 | //____________________________________________________________________________ |
84 | void AliPHOSGeometry::EmcModuleCoverage(const Int_t mod, Double_t & tm, Double_t & tM, Double_t & pm, Double_t & pM, Option_t * opt) | |
85 | { | |
86 | // calculates the angular coverage in theta and phi of a EMC module | |
87 | ||
88 | Double_t conv ; | |
89 | if ( opt == kRadian ) | |
90 | conv = 1. ; | |
91 | else if ( opt == kDegre ) | |
92 | conv = 180. / TMath::Pi() ; | |
93 | else { | |
94 | cout << "<I> AliPHOSGeometry::EmcXtalCoverage : " << opt << " unknown option; result in radian " << endl ; | |
95 | conv = 1. ; | |
96 | } | |
97 | ||
98 | Float_t phi = GetPHOSAngle(mod) * (TMath::Pi() / 180.) ; | |
92862013 | 99 | Float_t y0 = GetIPtoOuterCoverDistance() + GetUpperPlateThickness() |
9f616d61 | 100 | + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness() ; |
101 | ||
92862013 | 102 | Double_t angle = TMath::ATan( GetCrystalSize(0)*GetNPhi() / (2 * y0) ) ; |
9f616d61 | 103 | phi = phi + 1.5 * TMath::Pi() ; // to follow the convention of the particle generator(PHOS is between 230 and 310 deg.) |
92862013 | 104 | Double_t max = phi - angle ; |
105 | Double_t min = phi + angle ; | |
106 | pM = TMath::Max(max, min) * conv ; | |
107 | pm = TMath::Min(max, min) * conv ; | |
9f616d61 | 108 | |
92862013 | 109 | angle = TMath::ATan( GetCrystalSize(2)*GetNZ() / (2 * y0) ) ; |
110 | max = TMath::Pi() / 2. + angle ; // to follow the convention of the particle generator(PHOS is at 90 deg.) | |
111 | min = TMath::Pi() / 2. - angle ; | |
112 | tM = TMath::Max(max, min) * conv ; | |
113 | tm = TMath::Min(max, min) * conv ; | |
9f616d61 | 114 | |
115 | } | |
116 | ||
117 | //____________________________________________________________________________ | |
118 | void AliPHOSGeometry::EmcXtalCoverage(Double_t & theta, Double_t & phi, Option_t * opt) | |
119 | { | |
120 | // calculates the angular coverage in theta and phi of a single crystal in a EMC module | |
121 | ||
122 | Double_t conv ; | |
123 | if ( opt == kRadian ) | |
124 | conv = 1. ; | |
125 | else if ( opt == kDegre ) | |
126 | conv = 180. / TMath::Pi() ; | |
127 | else { | |
128 | cout << "<I> AliPHOSGeometry::EmcXtalCoverage : " << opt << " unknown option; result in radian " << endl ; | |
129 | conv = 1. ; | |
130 | } | |
131 | ||
92862013 | 132 | Float_t y0 = GetIPtoOuterCoverDistance() + GetUpperPlateThickness() |
9f616d61 | 133 | + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness() ; |
92862013 | 134 | theta = 2 * TMath::ATan( GetCrystalSize(2) / (2 * y0) ) * conv ; |
135 | phi = 2 * TMath::ATan( GetCrystalSize(0) / (2 * y0) ) * conv ; | |
9f616d61 | 136 | } |
137 | ||
138 | ||
139 | //____________________________________________________________________________ | |
140 | void AliPHOSGeometry::ImpactOnEmc(const Double_t theta, const Double_t phi, Int_t & ModuleNumber, Double_t & z, Double_t & x) | |
141 | { | |
142 | // calculates the impact coordinates of a neutral particle | |
143 | // emitted in direction theta and phi in ALICE | |
144 | ||
145 | // searches for the PHOS EMC module | |
146 | ModuleNumber = 0 ; | |
147 | Double_t tm, tM, pm, pM ; | |
148 | Int_t index = 1 ; | |
149 | while ( ModuleNumber == 0 && index <= GetNModules() ) { | |
150 | EmcModuleCoverage(index, tm, tM, pm, pM) ; | |
151 | if ( (theta >= tm && theta <= tM) && (phi >= pm && phi <= pM ) ) | |
152 | ModuleNumber = index ; | |
153 | index++ ; | |
154 | } | |
155 | if ( ModuleNumber != 0 ) { | |
156 | Float_t phi0 = GetPHOSAngle(ModuleNumber) * (TMath::Pi() / 180.) + 1.5 * TMath::Pi() ; | |
92862013 | 157 | Float_t y0 = GetIPtoOuterCoverDistance() + GetUpperPlateThickness() |
9f616d61 | 158 | + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness() ; |
159 | Double_t angle = phi - phi0; | |
92862013 | 160 | x = y0 * TMath::Tan(angle) ; |
9f616d61 | 161 | angle = theta - TMath::Pi() / 2 ; |
92862013 | 162 | z = y0 * TMath::Tan(angle) ; |
9f616d61 | 163 | } |
164 | } | |
d15a28e7 | 165 | |
166 | //____________________________________________________________________________ | |
167 | void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos, TMatrix & gmat) | |
168 | { | |
169 | ||
170 | AliPHOSRecPoint * tmpPHOS = (AliPHOSRecPoint *) RecPoint ; | |
92862013 | 171 | TVector3 localposition ; |
d15a28e7 | 172 | |
173 | tmpPHOS->GetLocalPosition(gpos) ; | |
174 | ||
175 | ||
176 | if ( tmpPHOS->IsEmc() ) // it is a EMC crystal | |
177 | { gpos.SetY( -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness() + | |
178 | GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ) ; | |
179 | ||
180 | } | |
181 | else | |
182 | { // it is a PPSD pad | |
183 | AliPHOSPpsdRecPoint * tmpPpsd = (AliPHOSPpsdRecPoint *) RecPoint ; | |
184 | if (tmpPpsd->GetUp() ) // it is an upper module | |
185 | { | |
186 | gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() - | |
187 | GetLeadToMicro2Gap() - GetLeadConverterThickness() - | |
188 | GetMicro1ToLeadGap() - GetMicromegas1Thickness() / 2.0 ) ) ; | |
189 | } | |
190 | else // it is a lower module | |
191 | gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() / 2.0) ) ; | |
192 | } | |
193 | ||
92862013 | 194 | Float_t phi = GetPHOSAngle( tmpPHOS->GetPHOSMod()) ; |
195 | Double_t const kRADDEG = 180.0 / kPI ; | |
196 | Float_t rphi = phi / kRADDEG ; | |
d15a28e7 | 197 | |
92862013 | 198 | TRotation rot ; |
199 | rot.RotateZ(-rphi) ; // a rotation around Z by angle | |
d15a28e7 | 200 | |
92862013 | 201 | TRotation dummy = rot.Invert() ; // to transform from original frame to rotate frame |
202 | gpos.Transform(rot) ; // rotate the baby | |
6ad0bfa0 | 203 | |
d15a28e7 | 204 | } |
205 | ||
206 | //____________________________________________________________________________ | |
207 | void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos) | |
208 | { | |
209 | AliPHOSRecPoint * tmpPHOS = (AliPHOSRecPoint *) RecPoint ; | |
92862013 | 210 | TVector3 localposition ; |
d15a28e7 | 211 | tmpPHOS->GetLocalPosition(gpos) ; |
212 | ||
213 | ||
214 | if ( tmpPHOS->IsEmc() ) // it is a EMC crystal | |
215 | { gpos.SetY( -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness() + | |
216 | GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ) ; | |
217 | } | |
218 | else | |
219 | { // it is a PPSD pad | |
220 | AliPHOSPpsdRecPoint * tmpPpsd = (AliPHOSPpsdRecPoint *) RecPoint ; | |
221 | if (tmpPpsd->GetUp() ) // it is an upper module | |
222 | { | |
223 | gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() - | |
224 | GetLeadToMicro2Gap() - GetLeadConverterThickness() - | |
225 | GetMicro1ToLeadGap() - GetMicromegas1Thickness() / 2.0 ) ) ; | |
226 | } | |
227 | else // it is a lower module | |
228 | gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() / 2.0) ) ; | |
229 | } | |
230 | ||
92862013 | 231 | Float_t phi = GetPHOSAngle( tmpPHOS->GetPHOSMod()) ; |
232 | Double_t const kRADDEG = 180.0 / kPI ; | |
233 | Float_t rphi = phi / kRADDEG ; | |
d15a28e7 | 234 | |
92862013 | 235 | TRotation rot ; |
236 | rot.RotateZ(-rphi) ; // a rotation around Z by angle | |
d15a28e7 | 237 | |
92862013 | 238 | TRotation dummy = rot.Invert() ; // to transform from original frame to rotate frame |
239 | gpos.Transform(rot) ; // rotate the baby | |
d15a28e7 | 240 | } |
241 | ||
242 | //____________________________________________________________________________ | |
243 | void AliPHOSGeometry::Init(void) | |
244 | { | |
245 | fRotMatrixArray = new TObjArray(fNModules) ; | |
246 | ||
247 | cout << "PHOS geometry setup: parameters for option " << fName << " " << fTitle << endl ; | |
248 | if ( ((strcmp( fName, "default" )) == 0) || ((strcmp( fName, "GPS2" )) == 0) ) { | |
249 | fInit = kTRUE ; | |
250 | this->InitPHOS() ; | |
251 | this->InitPPSD() ; | |
252 | this->SetPHOSAngles() ; | |
253 | } | |
254 | else { | |
255 | fInit = kFALSE ; | |
256 | cout << "PHOS Geometry setup: option not defined " << fName << endl ; | |
257 | } | |
258 | } | |
259 | ||
260 | //____________________________________________________________________________ | |
261 | void AliPHOSGeometry::InitPHOS(void) | |
262 | { | |
263 | // PHOS | |
264 | ||
265 | fNPhi = 64 ; | |
266 | fNZ = 64 ; | |
267 | fNModules = 5 ; | |
268 | ||
269 | fPHOSAngle[0] = 0.0 ; // Module position angles are set in CreateGeometry() | |
270 | fPHOSAngle[1] = 0.0 ; | |
271 | fPHOSAngle[2] = 0.0 ; | |
272 | fPHOSAngle[3] = 0.0 ; | |
273 | ||
274 | fXtlSize[0] = 2.2 ; | |
275 | fXtlSize[1] = 18.0 ; | |
276 | fXtlSize[2] = 2.2 ; | |
277 | ||
278 | // all these numbers coming next are subject to changes | |
279 | ||
280 | fOuterBoxThickness[0] = 2.8 ; | |
281 | fOuterBoxThickness[1] = 5.0 ; | |
282 | fOuterBoxThickness[2] = 5.0 ; | |
283 | ||
284 | fUpperPlateThickness = 4.0 ; | |
285 | ||
286 | fSecondUpperPlateThickness = 5.0 ; | |
287 | ||
288 | fCrystalSupportHeight = 6.95 ; | |
289 | fCrystalWrapThickness = 0.01 ; | |
290 | fCrystalHolderThickness = 0.005 ; | |
291 | fModuleBoxThickness = 2.0 ; | |
292 | fIPtoOuterCoverDistance = 447.0 ; | |
293 | fIPtoCrystalSurface = 460.0 ; | |
294 | ||
92862013 | 295 | fPinDiodeSize[0] = 1.71 ; //Values given by Odd Harald feb 2000 |
296 | fPinDiodeSize[1] = 0.0280 ; // 0.0280 is the depth of active layer in the silicon | |
297 | fPinDiodeSize[2] = 1.61 ; | |
d15a28e7 | 298 | |
299 | fUpperCoolingPlateThickness = 0.06 ; | |
300 | fSupportPlateThickness = 10.0 ; | |
301 | fLowerThermoPlateThickness = 3.0 ; | |
302 | fLowerTextolitPlateThickness = 1.0 ; | |
303 | fGapBetweenCrystals = 0.03 ; | |
304 | ||
305 | fTextolitBoxThickness[0] = 1.5 ; | |
306 | fTextolitBoxThickness[1] = 0.0 ; | |
307 | fTextolitBoxThickness[2] = 3.0 ; | |
308 | ||
309 | fAirThickness[0] = 1.56 ; | |
310 | fAirThickness[1] = 20.5175 ; | |
311 | fAirThickness[2] = 2.48 ; | |
312 | ||
92862013 | 313 | Float_t xtalModulePhiSize = fNPhi * ( fXtlSize[0] + 2 * fGapBetweenCrystals ) ; |
314 | Float_t xtalModuleZSize = fNZ * ( fXtlSize[2] + 2 * fGapBetweenCrystals ) ; | |
d15a28e7 | 315 | |
316 | // The next dimensions are calculated from the above parameters | |
317 | ||
92862013 | 318 | fOuterBoxSize[0] = xtalModulePhiSize + 2 * ( fAirThickness[0] + fModuleBoxThickness |
d15a28e7 | 319 | + fTextolitBoxThickness[0] + fOuterBoxThickness[0] ) ; |
320 | fOuterBoxSize[1] = ( fXtlSize[1] + fCrystalSupportHeight + fCrystalWrapThickness + fCrystalHolderThickness ) | |
321 | + 2 * (fAirThickness[1] + fModuleBoxThickness + fTextolitBoxThickness[1] + fOuterBoxThickness[1] ) ; | |
92862013 | 322 | fOuterBoxSize[2] = xtalModuleZSize + 2 * ( fAirThickness[2] + fModuleBoxThickness |
d15a28e7 | 323 | + fTextolitBoxThickness[2] + fOuterBoxThickness[2] ) ; |
324 | ||
325 | fTextolitBoxSize[0] = fOuterBoxSize[0] - 2 * fOuterBoxThickness[0] ; | |
326 | fTextolitBoxSize[1] = fOuterBoxSize[1] - fOuterBoxThickness[1] - fUpperPlateThickness ; | |
327 | fTextolitBoxSize[2] = fOuterBoxSize[2] - 2 * fOuterBoxThickness[2] ; | |
328 | ||
329 | fAirFilledBoxSize[0] = fTextolitBoxSize[0] - 2 * fTextolitBoxThickness[0] ; | |
330 | fAirFilledBoxSize[1] = fTextolitBoxSize[1] - fSecondUpperPlateThickness ; | |
331 | fAirFilledBoxSize[2] = fTextolitBoxSize[2] - 2 * fTextolitBoxThickness[2] ; | |
332 | ||
333 | } | |
334 | ||
335 | //____________________________________________________________________________ | |
336 | void AliPHOSGeometry::InitPPSD(void) | |
337 | { | |
338 | // PPSD | |
339 | ||
340 | fAnodeThickness = 0.0009 ; | |
341 | fAvalancheGap = 0.01 ; | |
342 | fCathodeThickness = 0.0009 ; | |
343 | fCompositeThickness = 0.3 ; | |
9f616d61 | 344 | fConversionGap = 0.6 ; |
d15a28e7 | 345 | fLeadConverterThickness = 0.56 ; |
346 | fLeadToMicro2Gap = 0.1 ; | |
347 | fLidThickness = 0.2 ; | |
348 | fMicro1ToLeadGap = 0.1 ; | |
349 | fMicromegasWallThickness = 0.6 ; | |
350 | fNumberOfModulesPhi = 4 ; | |
351 | fNumberOfModulesZ = 4 ; | |
352 | fNumberOfPadsPhi = 24 ; | |
353 | fNumberOfPadsZ = 24 ; | |
354 | fPCThickness = 0.1 ; | |
355 | fPhiDisplacement = 0.8 ; | |
356 | fZDisplacement = 0.8 ; | |
357 | ||
358 | fMicromegas1Thickness = fLidThickness + 2 * fCompositeThickness + fCathodeThickness + fPCThickness | |
359 | + fAnodeThickness + fConversionGap + fAvalancheGap ; | |
360 | fMicromegas2Thickness = fMicromegas1Thickness ; | |
361 | ||
362 | ||
363 | fPPSDModuleSize[0] = 38.0 ; | |
364 | fPPSDModuleSize[1] = fMicromegas1Thickness ; | |
365 | fPPSDModuleSize[2] = 38.0 ; | |
366 | ||
367 | fPPSDBoxSize[0] = fNumberOfModulesPhi * fPPSDModuleSize[0] + 2 * fPhiDisplacement ; | |
368 | fPPSDBoxSize[1] = fMicromegas2Thickness + fMicromegas2Thickness + fLeadConverterThickness + fMicro1ToLeadGap + fLeadToMicro2Gap ; | |
369 | fPPSDBoxSize[2] = fNumberOfModulesZ * fPPSDModuleSize[2] + 2 * fZDisplacement ; | |
370 | ||
371 | fIPtoTopLidDistance = fIPtoOuterCoverDistance - fPPSDBoxSize[1] - 1. ; | |
372 | ||
373 | } | |
374 | ||
375 | //____________________________________________________________________________ | |
376 | AliPHOSGeometry * AliPHOSGeometry::GetInstance() | |
377 | { | |
d15a28e7 | 378 | return (AliPHOSGeometry *) fGeom ; |
379 | } | |
380 | ||
381 | //____________________________________________________________________________ | |
382 | AliPHOSGeometry * AliPHOSGeometry::GetInstance(const Text_t* name, const Text_t* title) | |
383 | { | |
384 | AliPHOSGeometry * rv = 0 ; | |
385 | if ( fGeom == 0 ) { | |
386 | fGeom = new AliPHOSGeometry(name, title) ; | |
387 | rv = (AliPHOSGeometry * ) fGeom ; | |
388 | } | |
389 | else { | |
390 | if ( strcmp(fGeom->GetName(), name) != 0 ) { | |
391 | cout << "AliPHOSGeometry <E> : current geometry is " << fGeom->GetName() << endl | |
392 | << " you cannot call " << name << endl ; | |
393 | } | |
394 | else | |
395 | rv = (AliPHOSGeometry *) fGeom ; | |
396 | } | |
397 | return rv ; | |
398 | } | |
399 | ||
400 | //____________________________________________________________________________ | |
92862013 | 401 | Bool_t AliPHOSGeometry::RelToAbsNumbering(const Int_t * relid, Int_t & AbsId) |
d15a28e7 | 402 | { |
403 | ||
404 | // AbsId = 1:fNModules * fNPhi * fNZ -> PbWO4 | |
405 | // AbsId = 1:fNModules * 2 * (fNumberOfModulesPhi * fNumberOfModulesZ) * fNumberOfPadsPhi * fNumberOfPadsZ -> PPSD | |
406 | ||
407 | Bool_t rv = kTRUE ; | |
408 | ||
92862013 | 409 | if ( relid[1] > 0 ) { // its a PPSD pad |
d15a28e7 | 410 | |
411 | AbsId = GetNPhi() * GetNZ() * GetNModules() // the offset to separate emcal crystals from PPSD pads | |
92862013 | 412 | + ( relid[0] - 1 ) * GetNumberOfModulesPhi() * GetNumberOfModulesZ() // the pads offset of PHOS modules |
d15a28e7 | 413 | * GetNumberOfPadsPhi() * GetNumberOfPadsZ() * 2 |
92862013 | 414 | + ( relid[1] - 1 ) * GetNumberOfPadsPhi() * GetNumberOfPadsZ() // the pads offset of PPSD modules |
415 | + ( relid[2] - 1 ) * GetNumberOfPadsPhi() // the pads offset of a PPSD row | |
416 | + relid[3] ; // the column number | |
d15a28e7 | 417 | } |
418 | else { | |
92862013 | 419 | if ( relid[1] == 0 ) { // its a Phos crystal |
420 | AbsId = ( relid[0] - 1 ) * GetNPhi() * GetNZ() // the offset of PHOS modules | |
421 | + ( relid[2] - 1 ) * GetNPhi() // the offset of a xtal row | |
422 | + relid[3] ; // the column number | |
d15a28e7 | 423 | } |
424 | } | |
425 | ||
426 | return rv ; | |
427 | } | |
428 | ||
429 | //____________________________________________________________________________ | |
430 | ||
92862013 | 431 | void AliPHOSGeometry::RelPosInAlice(const Int_t id, TVector3 & pos ) |
d15a28e7 | 432 | { |
92862013 | 433 | if (id > 0) { |
d15a28e7 | 434 | |
92862013 | 435 | Int_t relid[4] ; |
d15a28e7 | 436 | |
92862013 | 437 | AbsToRelNumbering(id , relid) ; |
d15a28e7 | 438 | |
92862013 | 439 | Int_t phosmodule = relid[0] ; |
d15a28e7 | 440 | |
92862013 | 441 | Float_t y0 = 0 ; |
9f616d61 | 442 | |
92862013 | 443 | if ( relid[1] == 0 ) // it is a PbW04 crystal |
444 | { y0 = -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness() | |
9f616d61 | 445 | + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ; |
d15a28e7 | 446 | } |
92862013 | 447 | if ( relid[1] > 0 ) { // its a PPSD pad |
448 | if ( relid[1] > GetNumberOfModulesPhi() * GetNumberOfModulesZ() ) // its an bottom module | |
d15a28e7 | 449 | { |
92862013 | 450 | y0 = -( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() / 2.0) ; |
d15a28e7 | 451 | } |
452 | else // its an upper module | |
92862013 | 453 | y0 = -( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() - GetLeadToMicro2Gap() |
9f616d61 | 454 | - GetLeadConverterThickness() - GetMicro1ToLeadGap() - GetMicromegas1Thickness() / 2.0) ; |
d15a28e7 | 455 | } |
456 | ||
457 | Float_t x, z ; | |
92862013 | 458 | RelPosInModule(relid, x, z) ; |
d15a28e7 | 459 | |
9f616d61 | 460 | pos.SetX(x) ; |
461 | pos.SetZ(z) ; | |
92862013 | 462 | pos.SetY( TMath::Sqrt(x*x + z*z + y0*y0) ) ; |
9f616d61 | 463 | |
d15a28e7 | 464 | |
465 | ||
92862013 | 466 | Float_t phi = GetPHOSAngle( phosmodule) ; |
467 | Double_t const kRADDEG = 180.0 / kPI ; | |
468 | Float_t rphi = phi / kRADDEG ; | |
d15a28e7 | 469 | |
92862013 | 470 | TRotation rot ; |
471 | rot.RotateZ(-rphi) ; // a rotation around Z by angle | |
d15a28e7 | 472 | |
92862013 | 473 | TRotation dummy = rot.Invert() ; // to transform from original frame to rotate frame |
d15a28e7 | 474 | |
92862013 | 475 | pos.Transform(rot) ; // rotate the baby |
d15a28e7 | 476 | } |
477 | else { | |
478 | pos.SetX(0.); | |
479 | pos.SetY(0.); | |
480 | pos.SetZ(0.); | |
481 | } | |
482 | } | |
483 | ||
484 | //____________________________________________________________________________ | |
92862013 | 485 | void AliPHOSGeometry::RelPosInModule(const Int_t * relid, Float_t & x, Float_t & z) |
d15a28e7 | 486 | { |
92862013 | 487 | Int_t ppsdmodule ; |
488 | Int_t row = relid[2] ; //offset along z axiz | |
489 | Int_t column = relid[3] ; //offset along x axiz | |
d15a28e7 | 490 | |
92862013 | 491 | Float_t padsizeZ = GetPPSDModuleSize(2)/ GetNumberOfPadsZ(); |
492 | Float_t padsizeX = GetPPSDModuleSize(0)/ GetNumberOfPadsPhi(); | |
d15a28e7 | 493 | |
92862013 | 494 | if ( relid[1] == 0 ) { // its a PbW04 crystal |
495 | x = -( GetNPhi()/2. - row + 0.5 ) * GetCrystalSize(0) ; // position ox Xtal with respect | |
496 | z = ( GetNZ() /2. - column + 0.5 ) * GetCrystalSize(2) ; // of center of PHOS module | |
d15a28e7 | 497 | } |
498 | else { | |
92862013 | 499 | if ( relid[1] > GetNumberOfModulesPhi() * GetNumberOfModulesZ() ) |
500 | ppsdmodule = relid[1]-GetNumberOfModulesPhi() * GetNumberOfModulesZ(); | |
501 | else ppsdmodule = relid[1] ; | |
502 | Int_t modrow = 1+(Int_t)TMath::Ceil( (Float_t)ppsdmodule / GetNumberOfModulesPhi()-1. ) ; | |
503 | Int_t modcol = ppsdmodule - ( modrow - 1 ) * GetNumberOfModulesPhi() ; | |
504 | Float_t x0 = ( GetNumberOfModulesPhi() / 2. - modrow + 0.5 ) * GetPPSDModuleSize(0) ; | |
505 | Float_t z0 = ( GetNumberOfModulesZ() / 2. - modcol + 0.5 ) * GetPPSDModuleSize(2) ; | |
506 | x = - ( GetNumberOfPadsPhi()/2. - row - 0.5 ) * padsizeX + x0 ; // position of pad with respect | |
507 | z = ( GetNumberOfPadsZ()/2. - column - 0.5 ) * padsizeZ - z0 ; // of center of PHOS module | |
d15a28e7 | 508 | } |
509 | } | |
510 | ||
511 | //____________________________________________________________________________ | |
512 | void AliPHOSGeometry:: SetPHOSAngles() | |
513 | { | |
92862013 | 514 | Double_t const kRADDEG = 180.0 / kPI ; |
515 | Float_t pphi = TMath::ATan( fOuterBoxSize[0] / ( 2.0 * fIPtoOuterCoverDistance ) ) ; | |
516 | pphi *= kRADDEG ; | |
d15a28e7 | 517 | |
518 | for( Int_t i = 1; i <= fNModules ; i++ ) { | |
92862013 | 519 | Float_t angle = pphi * 2 * ( i - fNModules / 2.0 - 0.5 ) ; |
d15a28e7 | 520 | fPHOSAngle[i-1] = - angle ; |
521 | } | |
522 | } | |
523 |