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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 |
20 | // The EMC modules are parametrized so that any configuration can be easily implemented | |
21 | // The title is used to identify the type of CPV used. So far only PPSD implemented | |
22 | // | |
23 | //*-- Author: Yves Schutz (SUBATECH) | |
d15a28e7 | 24 | |
25 | // --- ROOT system --- | |
26 | ||
27 | #include "TVector3.h" | |
28 | #include "TRotation.h" | |
29 | ||
30 | // --- Standard library --- | |
31 | ||
de9ec31b | 32 | #include <iostream.h> |
d15a28e7 | 33 | |
34 | // --- AliRoot header files --- | |
35 | ||
36 | #include "AliPHOSGeometry.h" | |
37 | #include "AliPHOSPpsdRecPoint.h" | |
38 | #include "AliConst.h" | |
39 | ||
9ec91567 | 40 | ClassImp(AliPHOSGeometry) ; |
d15a28e7 | 41 | |
9ec91567 | 42 | AliPHOSGeometry * AliPHOSGeometry::fgGeom = 0 ; |
282c5906 | 43 | Bool_t AliPHOSGeometry::fgInit = kFALSE ; |
9ec91567 | 44 | |
d15a28e7 | 45 | //____________________________________________________________________________ |
46 | AliPHOSGeometry::~AliPHOSGeometry(void) | |
47 | { | |
b2a60966 | 48 | // dtor |
49 | ||
d15a28e7 | 50 | fRotMatrixArray->Delete() ; |
51 | delete fRotMatrixArray ; | |
4697edca | 52 | |
53 | delete fPHOSAngle ; | |
d15a28e7 | 54 | } |
55 | ||
56 | //____________________________________________________________________________ | |
92862013 | 57 | Bool_t AliPHOSGeometry::AbsToRelNumbering(const Int_t AbsId, Int_t * relid) |
d15a28e7 | 58 | { |
b2a60966 | 59 | // Converts the absolute numbering into the following array/ |
60 | // relid[0] = PHOS Module number 1:fNModules | |
61 | // relid[1] = 0 if PbW04 | |
62 | // = PPSD Module number 1:fNumberOfModulesPhi*fNumberOfModulesZ*2 (2->up and bottom level) | |
63 | // relid[2] = Row number inside a PHOS or PPSD module | |
64 | // relid[3] = Column number inside a PHOS or PPSD module | |
d15a28e7 | 65 | |
66 | Bool_t rv = kTRUE ; | |
92862013 | 67 | Float_t id = AbsId ; |
d15a28e7 | 68 | |
92862013 | 69 | Int_t phosmodulenumber = (Int_t)TMath:: Ceil( id / ( GetNPhi() * GetNZ() ) ) ; |
d15a28e7 | 70 | |
92862013 | 71 | if ( phosmodulenumber > GetNModules() ) { // its a PPSD pad |
d15a28e7 | 72 | |
92862013 | 73 | id -= GetNPhi() * GetNZ() * GetNModules() ; |
d15a28e7 | 74 | Float_t tempo = 2 * GetNumberOfModulesPhi() * GetNumberOfModulesZ() * GetNumberOfPadsPhi() * GetNumberOfPadsZ() ; |
92862013 | 75 | relid[0] = (Int_t)TMath::Ceil( id / tempo ) ; |
76 | id -= ( relid[0] - 1 ) * tempo ; | |
77 | relid[1] = (Int_t)TMath::Ceil( id / ( GetNumberOfPadsPhi() * GetNumberOfPadsZ() ) ) ; | |
78 | id -= ( relid[1] - 1 ) * GetNumberOfPadsPhi() * GetNumberOfPadsZ() ; | |
79 | relid[2] = (Int_t)TMath::Ceil( id / GetNumberOfPadsPhi() ) ; | |
80 | relid[3] = (Int_t) ( id - ( relid[2] - 1 ) * GetNumberOfPadsPhi() ) ; | |
d15a28e7 | 81 | } |
82 | else { // its a PW04 crystal | |
83 | ||
92862013 | 84 | relid[0] = phosmodulenumber ; |
85 | relid[1] = 0 ; | |
86 | id -= ( phosmodulenumber - 1 ) * GetNPhi() * GetNZ() ; | |
87 | relid[2] = (Int_t)TMath::Ceil( id / GetNPhi() ) ; | |
88 | relid[3] = (Int_t)( id - ( relid[2] - 1 ) * GetNPhi() ) ; | |
d15a28e7 | 89 | } |
90 | return rv ; | |
91 | } | |
9f616d61 | 92 | //____________________________________________________________________________ |
93 | void AliPHOSGeometry::EmcModuleCoverage(const Int_t mod, Double_t & tm, Double_t & tM, Double_t & pm, Double_t & pM, Option_t * opt) | |
94 | { | |
95 | // calculates the angular coverage in theta and phi of a EMC module | |
96 | ||
97 | Double_t conv ; | |
cf0c2bc1 | 98 | if ( opt == Radian() ) |
9f616d61 | 99 | conv = 1. ; |
cf0c2bc1 | 100 | else if ( opt == Degre() ) |
9f616d61 | 101 | conv = 180. / TMath::Pi() ; |
102 | else { | |
103 | cout << "<I> AliPHOSGeometry::EmcXtalCoverage : " << opt << " unknown option; result in radian " << endl ; | |
104 | conv = 1. ; | |
105 | } | |
106 | ||
107 | Float_t phi = GetPHOSAngle(mod) * (TMath::Pi() / 180.) ; | |
92862013 | 108 | Float_t y0 = GetIPtoOuterCoverDistance() + GetUpperPlateThickness() |
9f616d61 | 109 | + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness() ; |
110 | ||
92862013 | 111 | Double_t angle = TMath::ATan( GetCrystalSize(0)*GetNPhi() / (2 * y0) ) ; |
9f616d61 | 112 | phi = phi + 1.5 * TMath::Pi() ; // to follow the convention of the particle generator(PHOS is between 230 and 310 deg.) |
92862013 | 113 | Double_t max = phi - angle ; |
114 | Double_t min = phi + angle ; | |
115 | pM = TMath::Max(max, min) * conv ; | |
116 | pm = TMath::Min(max, min) * conv ; | |
9f616d61 | 117 | |
92862013 | 118 | angle = TMath::ATan( GetCrystalSize(2)*GetNZ() / (2 * y0) ) ; |
119 | max = TMath::Pi() / 2. + angle ; // to follow the convention of the particle generator(PHOS is at 90 deg.) | |
120 | min = TMath::Pi() / 2. - angle ; | |
121 | tM = TMath::Max(max, min) * conv ; | |
122 | tm = TMath::Min(max, min) * conv ; | |
9f616d61 | 123 | |
124 | } | |
125 | ||
126 | //____________________________________________________________________________ | |
127 | void AliPHOSGeometry::EmcXtalCoverage(Double_t & theta, Double_t & phi, Option_t * opt) | |
128 | { | |
129 | // calculates the angular coverage in theta and phi of a single crystal in a EMC module | |
130 | ||
131 | Double_t conv ; | |
cf0c2bc1 | 132 | if ( opt == Radian() ) |
9f616d61 | 133 | conv = 1. ; |
cf0c2bc1 | 134 | else if ( opt == Degre() ) |
9f616d61 | 135 | conv = 180. / TMath::Pi() ; |
136 | else { | |
137 | cout << "<I> AliPHOSGeometry::EmcXtalCoverage : " << opt << " unknown option; result in radian " << endl ; | |
138 | conv = 1. ; | |
139 | } | |
140 | ||
92862013 | 141 | Float_t y0 = GetIPtoOuterCoverDistance() + GetUpperPlateThickness() |
9f616d61 | 142 | + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness() ; |
92862013 | 143 | theta = 2 * TMath::ATan( GetCrystalSize(2) / (2 * y0) ) * conv ; |
144 | phi = 2 * TMath::ATan( GetCrystalSize(0) / (2 * y0) ) * conv ; | |
9f616d61 | 145 | } |
146 | ||
147 | ||
148 | //____________________________________________________________________________ | |
149 | void AliPHOSGeometry::ImpactOnEmc(const Double_t theta, const Double_t phi, Int_t & ModuleNumber, Double_t & z, Double_t & x) | |
150 | { | |
151 | // calculates the impact coordinates of a neutral particle | |
152 | // emitted in direction theta and phi in ALICE | |
153 | ||
154 | // searches for the PHOS EMC module | |
155 | ModuleNumber = 0 ; | |
156 | Double_t tm, tM, pm, pM ; | |
157 | Int_t index = 1 ; | |
158 | while ( ModuleNumber == 0 && index <= GetNModules() ) { | |
159 | EmcModuleCoverage(index, tm, tM, pm, pM) ; | |
160 | if ( (theta >= tm && theta <= tM) && (phi >= pm && phi <= pM ) ) | |
161 | ModuleNumber = index ; | |
162 | index++ ; | |
163 | } | |
164 | if ( ModuleNumber != 0 ) { | |
165 | Float_t phi0 = GetPHOSAngle(ModuleNumber) * (TMath::Pi() / 180.) + 1.5 * TMath::Pi() ; | |
92862013 | 166 | Float_t y0 = GetIPtoOuterCoverDistance() + GetUpperPlateThickness() |
9f616d61 | 167 | + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness() ; |
168 | Double_t angle = phi - phi0; | |
92862013 | 169 | x = y0 * TMath::Tan(angle) ; |
9f616d61 | 170 | angle = theta - TMath::Pi() / 2 ; |
92862013 | 171 | z = y0 * TMath::Tan(angle) ; |
9f616d61 | 172 | } |
173 | } | |
d15a28e7 | 174 | |
175 | //____________________________________________________________________________ | |
e924dedc | 176 | void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos, TMatrix & gmat) |
d15a28e7 | 177 | { |
b2a60966 | 178 | // Calculates the ALICE global coordinates of a RecPoint and the error matrix |
179 | ||
d15a28e7 | 180 | AliPHOSRecPoint * tmpPHOS = (AliPHOSRecPoint *) RecPoint ; |
92862013 | 181 | TVector3 localposition ; |
d15a28e7 | 182 | |
183 | tmpPHOS->GetLocalPosition(gpos) ; | |
184 | ||
185 | ||
186 | if ( tmpPHOS->IsEmc() ) // it is a EMC crystal | |
187 | { gpos.SetY( -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness() + | |
188 | GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ) ; | |
189 | ||
190 | } | |
191 | else | |
192 | { // it is a PPSD pad | |
193 | AliPHOSPpsdRecPoint * tmpPpsd = (AliPHOSPpsdRecPoint *) RecPoint ; | |
194 | if (tmpPpsd->GetUp() ) // it is an upper module | |
195 | { | |
196 | gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() - | |
197 | GetLeadToMicro2Gap() - GetLeadConverterThickness() - | |
198 | GetMicro1ToLeadGap() - GetMicromegas1Thickness() / 2.0 ) ) ; | |
199 | } | |
200 | else // it is a lower module | |
201 | gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() / 2.0) ) ; | |
202 | } | |
203 | ||
92862013 | 204 | Float_t phi = GetPHOSAngle( tmpPHOS->GetPHOSMod()) ; |
205 | Double_t const kRADDEG = 180.0 / kPI ; | |
206 | Float_t rphi = phi / kRADDEG ; | |
d15a28e7 | 207 | |
92862013 | 208 | TRotation rot ; |
209 | rot.RotateZ(-rphi) ; // a rotation around Z by angle | |
d15a28e7 | 210 | |
92862013 | 211 | TRotation dummy = rot.Invert() ; // to transform from original frame to rotate frame |
212 | gpos.Transform(rot) ; // rotate the baby | |
6ad0bfa0 | 213 | |
d15a28e7 | 214 | } |
215 | ||
216 | //____________________________________________________________________________ | |
e924dedc | 217 | void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos) |
d15a28e7 | 218 | { |
b2a60966 | 219 | // Calculates the ALICE global coordinates of a RecPoint |
220 | ||
d15a28e7 | 221 | AliPHOSRecPoint * tmpPHOS = (AliPHOSRecPoint *) RecPoint ; |
92862013 | 222 | TVector3 localposition ; |
d15a28e7 | 223 | tmpPHOS->GetLocalPosition(gpos) ; |
224 | ||
225 | ||
226 | if ( tmpPHOS->IsEmc() ) // it is a EMC crystal | |
227 | { gpos.SetY( -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness() + | |
228 | GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ) ; | |
229 | } | |
230 | else | |
231 | { // it is a PPSD pad | |
232 | AliPHOSPpsdRecPoint * tmpPpsd = (AliPHOSPpsdRecPoint *) RecPoint ; | |
233 | if (tmpPpsd->GetUp() ) // it is an upper module | |
234 | { | |
235 | gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() - | |
236 | GetLeadToMicro2Gap() - GetLeadConverterThickness() - | |
237 | GetMicro1ToLeadGap() - GetMicromegas1Thickness() / 2.0 ) ) ; | |
238 | } | |
239 | else // it is a lower module | |
240 | gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() / 2.0) ) ; | |
241 | } | |
242 | ||
92862013 | 243 | Float_t phi = GetPHOSAngle( tmpPHOS->GetPHOSMod()) ; |
244 | Double_t const kRADDEG = 180.0 / kPI ; | |
245 | Float_t rphi = phi / kRADDEG ; | |
d15a28e7 | 246 | |
92862013 | 247 | TRotation rot ; |
248 | rot.RotateZ(-rphi) ; // a rotation around Z by angle | |
d15a28e7 | 249 | |
92862013 | 250 | TRotation dummy = rot.Invert() ; // to transform from original frame to rotate frame |
251 | gpos.Transform(rot) ; // rotate the baby | |
d15a28e7 | 252 | } |
253 | ||
254 | //____________________________________________________________________________ | |
255 | void AliPHOSGeometry::Init(void) | |
256 | { | |
b2a60966 | 257 | // Initializes the PHOS parameters |
d15a28e7 | 258 | |
259 | cout << "PHOS geometry setup: parameters for option " << fName << " " << fTitle << endl ; | |
260 | if ( ((strcmp( fName, "default" )) == 0) || ((strcmp( fName, "GPS2" )) == 0) ) { | |
282c5906 | 261 | fgInit = kTRUE ; |
d15a28e7 | 262 | this->InitPHOS() ; |
263 | this->InitPPSD() ; | |
264 | this->SetPHOSAngles() ; | |
282c5906 | 265 | fRotMatrixArray = new TObjArray(fNModules) ; |
d15a28e7 | 266 | } |
267 | else { | |
282c5906 | 268 | fgInit = kFALSE ; |
d15a28e7 | 269 | cout << "PHOS Geometry setup: option not defined " << fName << endl ; |
270 | } | |
271 | } | |
272 | ||
273 | //____________________________________________________________________________ | |
274 | void AliPHOSGeometry::InitPHOS(void) | |
275 | { | |
b2a60966 | 276 | // Initializes the EMC parameters |
d15a28e7 | 277 | |
278 | fNPhi = 64 ; | |
279 | fNZ = 64 ; | |
280 | fNModules = 5 ; | |
4697edca | 281 | |
282 | fPHOSAngle = new Float_t[fNModules] ; | |
283 | Int_t index ; | |
284 | for ( index = 0; index < fNModules; index++ ) | |
285 | fPHOSAngle[index] = 0.0 ; // Module position angles are set in CreateGeometry() | |
d15a28e7 | 286 | |
d15a28e7 | 287 | fXtlSize[0] = 2.2 ; |
288 | fXtlSize[1] = 18.0 ; | |
289 | fXtlSize[2] = 2.2 ; | |
290 | ||
291 | // all these numbers coming next are subject to changes | |
292 | ||
293 | fOuterBoxThickness[0] = 2.8 ; | |
294 | fOuterBoxThickness[1] = 5.0 ; | |
295 | fOuterBoxThickness[2] = 5.0 ; | |
296 | ||
297 | fUpperPlateThickness = 4.0 ; | |
298 | ||
299 | fSecondUpperPlateThickness = 5.0 ; | |
300 | ||
301 | fCrystalSupportHeight = 6.95 ; | |
302 | fCrystalWrapThickness = 0.01 ; | |
303 | fCrystalHolderThickness = 0.005 ; | |
304 | fModuleBoxThickness = 2.0 ; | |
305 | fIPtoOuterCoverDistance = 447.0 ; | |
306 | fIPtoCrystalSurface = 460.0 ; | |
307 | ||
92862013 | 308 | fPinDiodeSize[0] = 1.71 ; //Values given by Odd Harald feb 2000 |
309 | fPinDiodeSize[1] = 0.0280 ; // 0.0280 is the depth of active layer in the silicon | |
310 | fPinDiodeSize[2] = 1.61 ; | |
d15a28e7 | 311 | |
312 | fUpperCoolingPlateThickness = 0.06 ; | |
313 | fSupportPlateThickness = 10.0 ; | |
314 | fLowerThermoPlateThickness = 3.0 ; | |
315 | fLowerTextolitPlateThickness = 1.0 ; | |
316 | fGapBetweenCrystals = 0.03 ; | |
317 | ||
318 | fTextolitBoxThickness[0] = 1.5 ; | |
319 | fTextolitBoxThickness[1] = 0.0 ; | |
320 | fTextolitBoxThickness[2] = 3.0 ; | |
321 | ||
322 | fAirThickness[0] = 1.56 ; | |
323 | fAirThickness[1] = 20.5175 ; | |
324 | fAirThickness[2] = 2.48 ; | |
325 | ||
92862013 | 326 | Float_t xtalModulePhiSize = fNPhi * ( fXtlSize[0] + 2 * fGapBetweenCrystals ) ; |
327 | Float_t xtalModuleZSize = fNZ * ( fXtlSize[2] + 2 * fGapBetweenCrystals ) ; | |
d15a28e7 | 328 | |
329 | // The next dimensions are calculated from the above parameters | |
330 | ||
92862013 | 331 | fOuterBoxSize[0] = xtalModulePhiSize + 2 * ( fAirThickness[0] + fModuleBoxThickness |
d15a28e7 | 332 | + fTextolitBoxThickness[0] + fOuterBoxThickness[0] ) ; |
333 | fOuterBoxSize[1] = ( fXtlSize[1] + fCrystalSupportHeight + fCrystalWrapThickness + fCrystalHolderThickness ) | |
334 | + 2 * (fAirThickness[1] + fModuleBoxThickness + fTextolitBoxThickness[1] + fOuterBoxThickness[1] ) ; | |
92862013 | 335 | fOuterBoxSize[2] = xtalModuleZSize + 2 * ( fAirThickness[2] + fModuleBoxThickness |
d15a28e7 | 336 | + fTextolitBoxThickness[2] + fOuterBoxThickness[2] ) ; |
337 | ||
338 | fTextolitBoxSize[0] = fOuterBoxSize[0] - 2 * fOuterBoxThickness[0] ; | |
339 | fTextolitBoxSize[1] = fOuterBoxSize[1] - fOuterBoxThickness[1] - fUpperPlateThickness ; | |
340 | fTextolitBoxSize[2] = fOuterBoxSize[2] - 2 * fOuterBoxThickness[2] ; | |
341 | ||
342 | fAirFilledBoxSize[0] = fTextolitBoxSize[0] - 2 * fTextolitBoxThickness[0] ; | |
343 | fAirFilledBoxSize[1] = fTextolitBoxSize[1] - fSecondUpperPlateThickness ; | |
344 | fAirFilledBoxSize[2] = fTextolitBoxSize[2] - 2 * fTextolitBoxThickness[2] ; | |
345 | ||
346 | } | |
347 | ||
348 | //____________________________________________________________________________ | |
349 | void AliPHOSGeometry::InitPPSD(void) | |
350 | { | |
b2a60966 | 351 | // Initializes the PPSD parameters |
d15a28e7 | 352 | |
353 | fAnodeThickness = 0.0009 ; | |
354 | fAvalancheGap = 0.01 ; | |
355 | fCathodeThickness = 0.0009 ; | |
356 | fCompositeThickness = 0.3 ; | |
9f616d61 | 357 | fConversionGap = 0.6 ; |
d15a28e7 | 358 | fLeadConverterThickness = 0.56 ; |
359 | fLeadToMicro2Gap = 0.1 ; | |
360 | fLidThickness = 0.2 ; | |
361 | fMicro1ToLeadGap = 0.1 ; | |
362 | fMicromegasWallThickness = 0.6 ; | |
363 | fNumberOfModulesPhi = 4 ; | |
364 | fNumberOfModulesZ = 4 ; | |
365 | fNumberOfPadsPhi = 24 ; | |
366 | fNumberOfPadsZ = 24 ; | |
367 | fPCThickness = 0.1 ; | |
368 | fPhiDisplacement = 0.8 ; | |
369 | fZDisplacement = 0.8 ; | |
370 | ||
371 | fMicromegas1Thickness = fLidThickness + 2 * fCompositeThickness + fCathodeThickness + fPCThickness | |
372 | + fAnodeThickness + fConversionGap + fAvalancheGap ; | |
373 | fMicromegas2Thickness = fMicromegas1Thickness ; | |
374 | ||
375 | ||
376 | fPPSDModuleSize[0] = 38.0 ; | |
377 | fPPSDModuleSize[1] = fMicromegas1Thickness ; | |
378 | fPPSDModuleSize[2] = 38.0 ; | |
379 | ||
380 | fPPSDBoxSize[0] = fNumberOfModulesPhi * fPPSDModuleSize[0] + 2 * fPhiDisplacement ; | |
381 | fPPSDBoxSize[1] = fMicromegas2Thickness + fMicromegas2Thickness + fLeadConverterThickness + fMicro1ToLeadGap + fLeadToMicro2Gap ; | |
382 | fPPSDBoxSize[2] = fNumberOfModulesZ * fPPSDModuleSize[2] + 2 * fZDisplacement ; | |
383 | ||
384 | fIPtoTopLidDistance = fIPtoOuterCoverDistance - fPPSDBoxSize[1] - 1. ; | |
385 | ||
386 | } | |
387 | ||
388 | //____________________________________________________________________________ | |
389 | AliPHOSGeometry * AliPHOSGeometry::GetInstance() | |
390 | { | |
b2a60966 | 391 | // Returns the pointer of the unique instance |
88714635 | 392 | return (AliPHOSGeometry *) fgGeom ; |
d15a28e7 | 393 | } |
394 | ||
395 | //____________________________________________________________________________ | |
396 | AliPHOSGeometry * AliPHOSGeometry::GetInstance(const Text_t* name, const Text_t* title) | |
397 | { | |
b2a60966 | 398 | // Returns the pointer of the unique instance |
d15a28e7 | 399 | AliPHOSGeometry * rv = 0 ; |
88714635 | 400 | if ( fgGeom == 0 ) { |
aafe457d | 401 | if ( strcmp(name,"") == 0 ) |
402 | rv = 0 ; | |
403 | else { | |
282c5906 | 404 | fgGeom = new AliPHOSGeometry(name, title) ; |
405 | if ( fgInit ) | |
406 | rv = (AliPHOSGeometry * ) fgGeom ; | |
407 | else { | |
408 | rv = 0 ; | |
409 | delete fgGeom ; | |
410 | fgGeom = 0 ; | |
411 | } | |
aafe457d | 412 | } |
d15a28e7 | 413 | } |
414 | else { | |
88714635 | 415 | if ( strcmp(fgGeom->GetName(), name) != 0 ) { |
416 | cout << "AliPHOSGeometry <E> : current geometry is " << fgGeom->GetName() << endl | |
d15a28e7 | 417 | << " you cannot call " << name << endl ; |
418 | } | |
419 | else | |
88714635 | 420 | rv = (AliPHOSGeometry *) fgGeom ; |
d15a28e7 | 421 | } |
422 | return rv ; | |
423 | } | |
424 | ||
425 | //____________________________________________________________________________ | |
92862013 | 426 | Bool_t AliPHOSGeometry::RelToAbsNumbering(const Int_t * relid, Int_t & AbsId) |
d15a28e7 | 427 | { |
b2a60966 | 428 | // Converts the relative numbering into the absolute numbering |
429 | // AbsId = 1:fNModules * fNPhi * fNZ -> PbWO4 | |
430 | // AbsId = 1:fNModules * 2 * (fNumberOfModulesPhi * fNumberOfModulesZ) * fNumberOfPadsPhi * fNumberOfPadsZ -> PPSD | |
d15a28e7 | 431 | |
432 | Bool_t rv = kTRUE ; | |
433 | ||
92862013 | 434 | if ( relid[1] > 0 ) { // its a PPSD pad |
d15a28e7 | 435 | |
436 | AbsId = GetNPhi() * GetNZ() * GetNModules() // the offset to separate emcal crystals from PPSD pads | |
92862013 | 437 | + ( relid[0] - 1 ) * GetNumberOfModulesPhi() * GetNumberOfModulesZ() // the pads offset of PHOS modules |
d15a28e7 | 438 | * GetNumberOfPadsPhi() * GetNumberOfPadsZ() * 2 |
92862013 | 439 | + ( relid[1] - 1 ) * GetNumberOfPadsPhi() * GetNumberOfPadsZ() // the pads offset of PPSD modules |
440 | + ( relid[2] - 1 ) * GetNumberOfPadsPhi() // the pads offset of a PPSD row | |
441 | + relid[3] ; // the column number | |
d15a28e7 | 442 | } |
443 | else { | |
92862013 | 444 | if ( relid[1] == 0 ) { // its a Phos crystal |
445 | AbsId = ( relid[0] - 1 ) * GetNPhi() * GetNZ() // the offset of PHOS modules | |
446 | + ( relid[2] - 1 ) * GetNPhi() // the offset of a xtal row | |
447 | + relid[3] ; // the column number | |
d15a28e7 | 448 | } |
449 | } | |
450 | ||
451 | return rv ; | |
452 | } | |
453 | ||
454 | //____________________________________________________________________________ | |
455 | ||
92862013 | 456 | void AliPHOSGeometry::RelPosInAlice(const Int_t id, TVector3 & pos ) |
d15a28e7 | 457 | { |
b2a60966 | 458 | // Converts the absolute numbering into the global ALICE coordinates |
459 | ||
92862013 | 460 | if (id > 0) { |
d15a28e7 | 461 | |
92862013 | 462 | Int_t relid[4] ; |
d15a28e7 | 463 | |
92862013 | 464 | AbsToRelNumbering(id , relid) ; |
d15a28e7 | 465 | |
92862013 | 466 | Int_t phosmodule = relid[0] ; |
d15a28e7 | 467 | |
92862013 | 468 | Float_t y0 = 0 ; |
9f616d61 | 469 | |
92862013 | 470 | if ( relid[1] == 0 ) // it is a PbW04 crystal |
471 | { y0 = -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness() | |
9f616d61 | 472 | + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ; |
d15a28e7 | 473 | } |
92862013 | 474 | if ( relid[1] > 0 ) { // its a PPSD pad |
475 | if ( relid[1] > GetNumberOfModulesPhi() * GetNumberOfModulesZ() ) // its an bottom module | |
d15a28e7 | 476 | { |
92862013 | 477 | y0 = -( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() / 2.0) ; |
d15a28e7 | 478 | } |
479 | else // its an upper module | |
92862013 | 480 | y0 = -( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() - GetLeadToMicro2Gap() |
9f616d61 | 481 | - GetLeadConverterThickness() - GetMicro1ToLeadGap() - GetMicromegas1Thickness() / 2.0) ; |
d15a28e7 | 482 | } |
483 | ||
484 | Float_t x, z ; | |
92862013 | 485 | RelPosInModule(relid, x, z) ; |
d15a28e7 | 486 | |
9f616d61 | 487 | pos.SetX(x) ; |
488 | pos.SetZ(z) ; | |
92862013 | 489 | pos.SetY( TMath::Sqrt(x*x + z*z + y0*y0) ) ; |
9f616d61 | 490 | |
d15a28e7 | 491 | |
492 | ||
92862013 | 493 | Float_t phi = GetPHOSAngle( phosmodule) ; |
494 | Double_t const kRADDEG = 180.0 / kPI ; | |
495 | Float_t rphi = phi / kRADDEG ; | |
d15a28e7 | 496 | |
92862013 | 497 | TRotation rot ; |
498 | rot.RotateZ(-rphi) ; // a rotation around Z by angle | |
d15a28e7 | 499 | |
92862013 | 500 | TRotation dummy = rot.Invert() ; // to transform from original frame to rotate frame |
d15a28e7 | 501 | |
92862013 | 502 | pos.Transform(rot) ; // rotate the baby |
d15a28e7 | 503 | } |
504 | else { | |
505 | pos.SetX(0.); | |
506 | pos.SetY(0.); | |
507 | pos.SetZ(0.); | |
508 | } | |
509 | } | |
510 | ||
511 | //____________________________________________________________________________ | |
92862013 | 512 | void AliPHOSGeometry::RelPosInModule(const Int_t * relid, Float_t & x, Float_t & z) |
d15a28e7 | 513 | { |
b2a60966 | 514 | // Converts the relative numbering into the local PHOS-module (x, z) coordinates |
515 | ||
92862013 | 516 | Int_t ppsdmodule ; |
517 | Int_t row = relid[2] ; //offset along z axiz | |
518 | Int_t column = relid[3] ; //offset along x axiz | |
d15a28e7 | 519 | |
92862013 | 520 | Float_t padsizeZ = GetPPSDModuleSize(2)/ GetNumberOfPadsZ(); |
521 | Float_t padsizeX = GetPPSDModuleSize(0)/ GetNumberOfPadsPhi(); | |
d15a28e7 | 522 | |
92862013 | 523 | if ( relid[1] == 0 ) { // its a PbW04 crystal |
524 | x = -( GetNPhi()/2. - row + 0.5 ) * GetCrystalSize(0) ; // position ox Xtal with respect | |
525 | z = ( GetNZ() /2. - column + 0.5 ) * GetCrystalSize(2) ; // of center of PHOS module | |
d15a28e7 | 526 | } |
527 | else { | |
92862013 | 528 | if ( relid[1] > GetNumberOfModulesPhi() * GetNumberOfModulesZ() ) |
529 | ppsdmodule = relid[1]-GetNumberOfModulesPhi() * GetNumberOfModulesZ(); | |
530 | else ppsdmodule = relid[1] ; | |
531 | Int_t modrow = 1+(Int_t)TMath::Ceil( (Float_t)ppsdmodule / GetNumberOfModulesPhi()-1. ) ; | |
532 | Int_t modcol = ppsdmodule - ( modrow - 1 ) * GetNumberOfModulesPhi() ; | |
533 | Float_t x0 = ( GetNumberOfModulesPhi() / 2. - modrow + 0.5 ) * GetPPSDModuleSize(0) ; | |
534 | Float_t z0 = ( GetNumberOfModulesZ() / 2. - modcol + 0.5 ) * GetPPSDModuleSize(2) ; | |
535 | x = - ( GetNumberOfPadsPhi()/2. - row - 0.5 ) * padsizeX + x0 ; // position of pad with respect | |
536 | z = ( GetNumberOfPadsZ()/2. - column - 0.5 ) * padsizeZ - z0 ; // of center of PHOS module | |
d15a28e7 | 537 | } |
538 | } | |
539 | ||
540 | //____________________________________________________________________________ | |
c1afa0e3 | 541 | void AliPHOSGeometry::SetPHOSAngles() |
d15a28e7 | 542 | { |
b2a60966 | 543 | // Calculates the position in ALICE of the PHOS modules |
544 | ||
92862013 | 545 | Double_t const kRADDEG = 180.0 / kPI ; |
546 | Float_t pphi = TMath::ATan( fOuterBoxSize[0] / ( 2.0 * fIPtoOuterCoverDistance ) ) ; | |
547 | pphi *= kRADDEG ; | |
d15a28e7 | 548 | |
549 | for( Int_t i = 1; i <= fNModules ; i++ ) { | |
92862013 | 550 | Float_t angle = pphi * 2 * ( i - fNModules / 2.0 - 0.5 ) ; |
d15a28e7 | 551 | fPHOSAngle[i-1] = - angle ; |
c1afa0e3 | 552 | } |
d15a28e7 | 553 | } |
554 | ||
2f3366b6 | 555 | //____________________________________________________________________________ |
556 | void AliPHOSGeometry::SetLeadConverterThickness(Float_t e) | |
557 | { | |
558 | // should ultimately disappear | |
b2a60966 | 559 | |
2f3366b6 | 560 | cout << " AliPHOSGeometry WARNING : You have changed LeadConverterThickness from " |
561 | << fLeadConverterThickness << " to " << e << endl ; | |
562 | ||
563 | fLeadConverterThickness = e ; | |
564 | } |