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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" | |
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" |
d15a28e7 | 45 | #include "AliPHOSPpsdRecPoint.h" |
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 ; | |
61 | if (fPHOSAngle ) delete fPHOSAngle ; | |
62 | } | |
63 | ||
64 | //____________________________________________________________________________ | |
65 | ||
66 | void AliPHOSGeometry::Init(void) | |
67 | { | |
a4e98857 | 68 | // Initializes the PHOS parameters : |
69 | // IHEP is the Protvino CPV (cathode pad chambers) | |
70 | // GPS2 is the Subatech Pre-Shower (two micromegas sandwiching a passive lead converter) | |
71 | // MIXT 4 PHOS modules withe the IHEP CPV qnd one PHOS module with the Subatche Pre-Shower | |
52a36ffd | 72 | |
a4e98857 | 73 | if ( ((strcmp( fName, "GPS2" )) == 0) || |
ed4205d8 | 74 | ((strcmp( fName, "IHEP" )) == 0) || |
75 | ((strcmp( fName, "MIXT" )) == 0) ) { | |
52a36ffd | 76 | fgInit = kTRUE ; |
ed4205d8 | 77 | |
78 | fNModules = 5; | |
79 | fNPPSDModules = 0; | |
80 | fAngle = 20; | |
81 | ||
82 | fGeometryEMCA = new AliPHOSEMCAGeometry(); | |
83 | if ( ((strcmp( fName, "GPS2" )) == 0) ) { | |
84 | fGeometryPPSD = new AliPHOSPPSDGeometry(); | |
85 | fGeometryCPV = 0; | |
86 | fNPPSDModules = fNModules; | |
87 | } | |
88 | else if ( ((strcmp( fName, "IHEP" )) == 0) ) { | |
89 | fGeometryCPV = new AliPHOSCPVGeometry (); | |
90 | fGeometryPPSD = 0; | |
91 | fNPPSDModules = 0; | |
92 | } | |
93 | else if ( ((strcmp( fName, "MIXT" )) == 0) ) { | |
94 | fGeometryCPV = new AliPHOSCPVGeometry (); | |
95 | fGeometryPPSD = new AliPHOSPPSDGeometry(); | |
96 | fNPPSDModules = 1; | |
97 | } | |
98 | fGeometrySUPP = new AliPHOSSupportGeometry(); | |
99 | ||
52a36ffd | 100 | fPHOSAngle = new Float_t[fNModules] ; |
101 | Int_t index ; | |
102 | for ( index = 0; index < fNModules; index++ ) | |
103 | fPHOSAngle[index] = 0.0 ; // Module position angles are set in CreateGeometry() | |
104 | ||
105 | this->SetPHOSAngles() ; | |
106 | fRotMatrixArray = new TObjArray(fNModules) ; | |
fa7cce36 | 107 | |
108 | // post the geometry into the appropriate folder | |
7b7c1533 | 109 | TFolder * folder = (TFolder*)gROOT->FindObjectAny("YSAlice/WhiteBoard/Geometry/PHOS"); |
110 | if ( !folder ) { | |
111 | cerr << "ERROR: AliPHOSGeometry::Init -> No WhiteBoard/Geometry/PHOS found !" << endl ; | |
112 | abort(); | |
113 | } else { | |
fa7cce36 | 114 | folder->SetOwner() ; |
115 | folder->Add(this) ; | |
7b7c1533 | 116 | } |
52a36ffd | 117 | } |
ed4205d8 | 118 | else { |
119 | fgInit = kFALSE ; | |
120 | cout << "PHOS Geometry setup: option not defined " << fName << endl ; | |
d0f1c6bb | 121 | abort() ; |
ed4205d8 | 122 | } |
52a36ffd | 123 | } |
124 | ||
5ccb0008 | 125 | |
126 | //____________________________________________________________________________ | |
127 | Bool_t AliPHOSGeometry::IsInEMC(const Int_t id) const { | |
128 | Int_t relid[4] ; | |
129 | AbsToRelNumbering(id, relid) ; | |
130 | if ( relid[1] == 0 ) | |
131 | return kTRUE ; | |
132 | else | |
133 | return kFALSE ; | |
134 | } | |
135 | ||
2f04ed65 | 136 | //____________________________________________________________________________ |
a4e98857 | 137 | Float_t AliPHOSGeometry::GetCPVBoxSize(Int_t index) const |
138 | { | |
139 | // returns the coarse dimension CPV depending on the CPV option set | |
140 | ||
2f04ed65 | 141 | if (strcmp(fName,"GPS2") ==0 ) |
142 | return fGeometryPPSD->GetCPVBoxSize(index); | |
143 | else if (strcmp(fName,"IHEP")==0) | |
144 | return fGeometryCPV ->GetCPVBoxSize(index); | |
145 | else if (strcmp(fName,"MIXT")==0) | |
146 | return TMath::Max(fGeometryCPV ->GetCPVBoxSize(index), fGeometryPPSD->GetCPVBoxSize(index)); | |
147 | else | |
148 | return 0; | |
149 | } | |
150 | ||
52a36ffd | 151 | //____________________________________________________________________________ |
152 | AliPHOSGeometry * AliPHOSGeometry::GetInstance() | |
153 | { | |
a4e98857 | 154 | // Returns the pointer of the unique instance; singleton specific |
155 | ||
52a36ffd | 156 | return (AliPHOSGeometry *) fgGeom ; |
157 | } | |
158 | ||
159 | //____________________________________________________________________________ | |
160 | AliPHOSGeometry * AliPHOSGeometry::GetInstance(const Text_t* name, const Text_t* title) | |
161 | { | |
162 | // Returns the pointer of the unique instance | |
a4e98857 | 163 | // Creates it with the specified options (name, title) if it does not exist yet |
164 | ||
52a36ffd | 165 | AliPHOSGeometry * rv = 0 ; |
166 | if ( fgGeom == 0 ) { | |
167 | if ( strcmp(name,"") == 0 ) | |
168 | rv = 0 ; | |
169 | else { | |
170 | fgGeom = new AliPHOSGeometry(name, title) ; | |
171 | if ( fgInit ) | |
172 | rv = (AliPHOSGeometry * ) fgGeom ; | |
173 | else { | |
174 | rv = 0 ; | |
175 | delete fgGeom ; | |
176 | fgGeom = 0 ; | |
177 | } | |
178 | } | |
179 | } | |
180 | else { | |
181 | if ( strcmp(fgGeom->GetName(), name) != 0 ) { | |
182 | cout << "AliPHOSGeometry <E> : current geometry is " << fgGeom->GetName() << endl | |
183 | << " you cannot call " << name << endl ; | |
184 | } | |
185 | else | |
186 | rv = (AliPHOSGeometry *) fgGeom ; | |
187 | } | |
188 | return rv ; | |
189 | } | |
4697edca | 190 | |
52a36ffd | 191 | //____________________________________________________________________________ |
192 | void AliPHOSGeometry::SetPHOSAngles() | |
193 | { | |
a4e98857 | 194 | // Calculates the position of the PHOS modules in ALICE global coordinate system |
52a36ffd | 195 | |
196 | Double_t const kRADDEG = 180.0 / kPI ; | |
ed4205d8 | 197 | Float_t pphi = 2 * TMath::ATan( GetOuterBoxSize(0) / ( 2.0 * GetIPtoOuterCoverDistance() ) ) ; |
52a36ffd | 198 | pphi *= kRADDEG ; |
ed4205d8 | 199 | if (pphi > fAngle) cout << "AliPHOSGeometry: PHOS modules overlap!\n"; |
200 | pphi = fAngle; | |
52a36ffd | 201 | |
202 | for( Int_t i = 1; i <= fNModules ; i++ ) { | |
ed4205d8 | 203 | Float_t angle = pphi * ( i - fNModules / 2.0 - 0.5 ) ; |
52a36ffd | 204 | fPHOSAngle[i-1] = - angle ; |
205 | } | |
d15a28e7 | 206 | } |
207 | ||
208 | //____________________________________________________________________________ | |
7b7c1533 | 209 | Bool_t AliPHOSGeometry::AbsToRelNumbering(const Int_t AbsId, Int_t * relid) const |
d15a28e7 | 210 | { |
b2a60966 | 211 | // Converts the absolute numbering into the following array/ |
212 | // relid[0] = PHOS Module number 1:fNModules | |
213 | // relid[1] = 0 if PbW04 | |
214 | // = PPSD Module number 1:fNumberOfModulesPhi*fNumberOfModulesZ*2 (2->up and bottom level) | |
215 | // relid[2] = Row number inside a PHOS or PPSD module | |
216 | // relid[3] = Column number inside a PHOS or PPSD module | |
d15a28e7 | 217 | |
218 | Bool_t rv = kTRUE ; | |
92862013 | 219 | Float_t id = AbsId ; |
d15a28e7 | 220 | |
92862013 | 221 | Int_t phosmodulenumber = (Int_t)TMath:: Ceil( id / ( GetNPhi() * GetNZ() ) ) ; |
d15a28e7 | 222 | |
52a36ffd | 223 | if ( phosmodulenumber > GetNModules() ) { // it is a PPSD or CPV pad |
224 | ||
225 | if ( strcmp(fName,"GPS2") == 0 ) { | |
226 | id -= GetNPhi() * GetNZ() * GetNModules() ; | |
227 | Float_t tempo = 2 * GetNumberOfModulesPhi() * GetNumberOfModulesZ() * GetNumberOfPadsPhi() * GetNumberOfPadsZ() ; | |
228 | relid[0] = (Int_t)TMath::Ceil( id / tempo ) ; | |
229 | id -= ( relid[0] - 1 ) * tempo ; | |
230 | relid[1] = (Int_t)TMath::Ceil( id / ( GetNumberOfPadsPhi() * GetNumberOfPadsZ() ) ) ; | |
231 | id -= ( relid[1] - 1 ) * GetNumberOfPadsPhi() * GetNumberOfPadsZ() ; | |
232 | relid[2] = (Int_t)TMath::Ceil( id / GetNumberOfPadsPhi() ) ; | |
233 | relid[3] = (Int_t) ( id - ( relid[2] - 1 ) * GetNumberOfPadsPhi() ) ; | |
234 | } | |
235 | else if ( strcmp(fName,"IHEP") == 0 ) { | |
236 | id -= GetNPhi() * GetNZ() * GetNModules() ; | |
ed4205d8 | 237 | Float_t nCPV = GetNumberOfCPVPadsPhi() * GetNumberOfCPVPadsZ() ; |
238 | relid[0] = (Int_t) TMath::Ceil( id / nCPV ) ; | |
52a36ffd | 239 | relid[1] = 1 ; |
ed4205d8 | 240 | id -= ( relid[0] - 1 ) * nCPV ; |
241 | relid[2] = (Int_t) TMath::Ceil( id / GetNumberOfCPVPadsZ() ) ; | |
242 | relid[3] = (Int_t) ( id - ( relid[2] - 1 ) * GetNumberOfCPVPadsZ() ) ; | |
243 | } | |
244 | else if ( strcmp(fName,"MIXT") == 0 ) { | |
245 | id -= GetNPhi() * GetNZ() * GetNModules() ; | |
246 | Float_t nPPSD = 2 * GetNumberOfModulesPhi() * GetNumberOfModulesZ() * GetNumberOfPadsPhi() * GetNumberOfPadsZ() ; | |
247 | Float_t nCPV = GetNumberOfCPVPadsPhi() * GetNumberOfCPVPadsZ() ; | |
248 | if (id <= nCPV*GetNCPVModules()) { // this pad belons to CPV | |
249 | relid[0] = (Int_t) TMath::Ceil( id / nCPV ) ; | |
250 | relid[1] = 1 ; | |
251 | id -= ( relid[0] - 1 ) * nCPV ; | |
252 | relid[2] = (Int_t) TMath::Ceil( id / GetNumberOfCPVPadsZ() ) ; | |
253 | relid[3] = (Int_t) ( id - ( relid[2] - 1 ) * GetNumberOfCPVPadsZ() ) ; | |
254 | } | |
255 | else { // this pad belons to PPSD | |
256 | id -= nCPV*GetNCPVModules(); | |
257 | relid[0] = (Int_t)TMath::Ceil( id / nPPSD ); | |
258 | id -= ( relid[0] - 1 ) * nPPSD ; | |
259 | relid[0] += GetNCPVModules(); | |
260 | relid[1] = (Int_t)TMath::Ceil( id / ( GetNumberOfPadsPhi() * GetNumberOfPadsZ() ) ) ; | |
261 | id -= ( relid[1] - 1 ) * GetNumberOfPadsPhi() * GetNumberOfPadsZ() ; | |
262 | relid[2] = (Int_t)TMath::Ceil( id / GetNumberOfPadsPhi() ) ; | |
263 | relid[3] = (Int_t) ( id - ( relid[2] - 1 ) * GetNumberOfPadsPhi() ) ; | |
264 | } | |
52a36ffd | 265 | } |
d15a28e7 | 266 | } |
267 | else { // its a PW04 crystal | |
268 | ||
92862013 | 269 | relid[0] = phosmodulenumber ; |
270 | relid[1] = 0 ; | |
271 | id -= ( phosmodulenumber - 1 ) * GetNPhi() * GetNZ() ; | |
272 | relid[2] = (Int_t)TMath::Ceil( id / GetNPhi() ) ; | |
273 | relid[3] = (Int_t)( id - ( relid[2] - 1 ) * GetNPhi() ) ; | |
d15a28e7 | 274 | } |
275 | return rv ; | |
276 | } | |
52a36ffd | 277 | |
9f616d61 | 278 | //____________________________________________________________________________ |
7b7c1533 | 279 | void AliPHOSGeometry::EmcModuleCoverage(const Int_t mod, Double_t & tm, Double_t & tM, Double_t & pm, Double_t & pM, Option_t * opt) const |
9f616d61 | 280 | { |
a4e98857 | 281 | // calculates the angular coverage in theta and phi of one EMC (=PHOS) module |
9f616d61 | 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 | ||
293 | Float_t phi = GetPHOSAngle(mod) * (TMath::Pi() / 180.) ; | |
92862013 | 294 | Float_t y0 = GetIPtoOuterCoverDistance() + GetUpperPlateThickness() |
9f616d61 | 295 | + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness() ; |
296 | ||
92862013 | 297 | Double_t angle = TMath::ATan( GetCrystalSize(0)*GetNPhi() / (2 * y0) ) ; |
9f616d61 | 298 | phi = phi + 1.5 * TMath::Pi() ; // to follow the convention of the particle generator(PHOS is between 230 and 310 deg.) |
92862013 | 299 | Double_t max = phi - angle ; |
300 | Double_t min = phi + angle ; | |
301 | pM = TMath::Max(max, min) * conv ; | |
302 | pm = TMath::Min(max, min) * conv ; | |
9f616d61 | 303 | |
92862013 | 304 | angle = TMath::ATan( GetCrystalSize(2)*GetNZ() / (2 * y0) ) ; |
305 | max = TMath::Pi() / 2. + angle ; // to follow the convention of the particle generator(PHOS is at 90 deg.) | |
306 | min = TMath::Pi() / 2. - angle ; | |
307 | tM = TMath::Max(max, min) * conv ; | |
308 | tm = TMath::Min(max, min) * conv ; | |
9f616d61 | 309 | |
310 | } | |
311 | ||
312 | //____________________________________________________________________________ | |
7b7c1533 | 313 | void AliPHOSGeometry::EmcXtalCoverage(Double_t & theta, Double_t & phi, Option_t * opt) const |
9f616d61 | 314 | { |
a4e98857 | 315 | // calculates the angular coverage in theta and phi of a single crystal in a EMC(=PHOS) module |
9f616d61 | 316 | |
317 | Double_t conv ; | |
cf0c2bc1 | 318 | if ( opt == Radian() ) |
9f616d61 | 319 | conv = 1. ; |
cf0c2bc1 | 320 | else if ( opt == Degre() ) |
9f616d61 | 321 | conv = 180. / TMath::Pi() ; |
322 | else { | |
323 | cout << "<I> AliPHOSGeometry::EmcXtalCoverage : " << opt << " unknown option; result in radian " << endl ; | |
324 | conv = 1. ; | |
325 | } | |
326 | ||
92862013 | 327 | Float_t y0 = GetIPtoOuterCoverDistance() + GetUpperPlateThickness() |
9f616d61 | 328 | + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness() ; |
92862013 | 329 | theta = 2 * TMath::ATan( GetCrystalSize(2) / (2 * y0) ) * conv ; |
330 | phi = 2 * TMath::ATan( GetCrystalSize(0) / (2 * y0) ) * conv ; | |
9f616d61 | 331 | } |
332 | ||
333 | ||
334 | //____________________________________________________________________________ | |
52a36ffd | 335 | void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos, TMatrix & gmat) const |
d15a28e7 | 336 | { |
a4e98857 | 337 | // Calculates the coordinates of a RecPoint and the error matrix in the ALICE global coordinate system |
b2a60966 | 338 | |
d15a28e7 | 339 | AliPHOSRecPoint * tmpPHOS = (AliPHOSRecPoint *) RecPoint ; |
92862013 | 340 | TVector3 localposition ; |
d15a28e7 | 341 | |
342 | tmpPHOS->GetLocalPosition(gpos) ; | |
343 | ||
344 | ||
345 | if ( tmpPHOS->IsEmc() ) // it is a EMC crystal | |
346 | { gpos.SetY( -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness() + | |
347 | GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ) ; | |
348 | ||
349 | } | |
350 | else | |
351 | { // it is a PPSD pad | |
352 | AliPHOSPpsdRecPoint * tmpPpsd = (AliPHOSPpsdRecPoint *) RecPoint ; | |
353 | if (tmpPpsd->GetUp() ) // it is an upper module | |
354 | { | |
355 | gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() - | |
356 | GetLeadToMicro2Gap() - GetLeadConverterThickness() - | |
357 | GetMicro1ToLeadGap() - GetMicromegas1Thickness() / 2.0 ) ) ; | |
358 | } | |
359 | else // it is a lower module | |
360 | gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() / 2.0) ) ; | |
361 | } | |
362 | ||
92862013 | 363 | Float_t phi = GetPHOSAngle( tmpPHOS->GetPHOSMod()) ; |
364 | Double_t const kRADDEG = 180.0 / kPI ; | |
365 | Float_t rphi = phi / kRADDEG ; | |
d15a28e7 | 366 | |
92862013 | 367 | TRotation rot ; |
368 | rot.RotateZ(-rphi) ; // a rotation around Z by angle | |
d15a28e7 | 369 | |
92862013 | 370 | TRotation dummy = rot.Invert() ; // to transform from original frame to rotate frame |
371 | gpos.Transform(rot) ; // rotate the baby | |
6ad0bfa0 | 372 | |
d15a28e7 | 373 | } |
374 | ||
375 | //____________________________________________________________________________ | |
5cda30f6 | 376 | void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos) const |
d15a28e7 | 377 | { |
a4e98857 | 378 | // Calculates the coordinates of a RecPoint in the ALICE global coordinate system |
b2a60966 | 379 | |
d15a28e7 | 380 | AliPHOSRecPoint * tmpPHOS = (AliPHOSRecPoint *) RecPoint ; |
92862013 | 381 | TVector3 localposition ; |
d15a28e7 | 382 | tmpPHOS->GetLocalPosition(gpos) ; |
383 | ||
384 | ||
385 | if ( tmpPHOS->IsEmc() ) // it is a EMC crystal | |
386 | { gpos.SetY( -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness() + | |
387 | GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ) ; | |
388 | } | |
389 | else | |
390 | { // it is a PPSD pad | |
391 | AliPHOSPpsdRecPoint * tmpPpsd = (AliPHOSPpsdRecPoint *) RecPoint ; | |
392 | if (tmpPpsd->GetUp() ) // it is an upper module | |
393 | { | |
394 | gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() - | |
395 | GetLeadToMicro2Gap() - GetLeadConverterThickness() - | |
396 | GetMicro1ToLeadGap() - GetMicromegas1Thickness() / 2.0 ) ) ; | |
397 | } | |
398 | else // it is a lower module | |
399 | gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() / 2.0) ) ; | |
400 | } | |
401 | ||
92862013 | 402 | Float_t phi = GetPHOSAngle( tmpPHOS->GetPHOSMod()) ; |
403 | Double_t const kRADDEG = 180.0 / kPI ; | |
404 | Float_t rphi = phi / kRADDEG ; | |
d15a28e7 | 405 | |
92862013 | 406 | TRotation rot ; |
407 | rot.RotateZ(-rphi) ; // a rotation around Z by angle | |
d15a28e7 | 408 | |
92862013 | 409 | TRotation dummy = rot.Invert() ; // to transform from original frame to rotate frame |
410 | gpos.Transform(rot) ; // rotate the baby | |
d15a28e7 | 411 | } |
412 | ||
413 | //____________________________________________________________________________ | |
7b7c1533 | 414 | void AliPHOSGeometry::ImpactOnEmc(const Double_t theta, const Double_t phi, Int_t & ModuleNumber, Double_t & z, Double_t & x) const |
d15a28e7 | 415 | { |
a4e98857 | 416 | // calculates the impact coordinates on PHOS of a neutral particle |
417 | // emitted in the direction theta and phi in the ALICE global coordinate system | |
d15a28e7 | 418 | |
52a36ffd | 419 | // searches for the PHOS EMC module |
420 | ModuleNumber = 0 ; | |
421 | Double_t tm, tM, pm, pM ; | |
422 | Int_t index = 1 ; | |
423 | while ( ModuleNumber == 0 && index <= GetNModules() ) { | |
424 | EmcModuleCoverage(index, tm, tM, pm, pM) ; | |
425 | if ( (theta >= tm && theta <= tM) && (phi >= pm && phi <= pM ) ) | |
426 | ModuleNumber = index ; | |
427 | index++ ; | |
d15a28e7 | 428 | } |
52a36ffd | 429 | if ( ModuleNumber != 0 ) { |
430 | Float_t phi0 = GetPHOSAngle(ModuleNumber) * (TMath::Pi() / 180.) + 1.5 * TMath::Pi() ; | |
431 | Float_t y0 = GetIPtoOuterCoverDistance() + GetUpperPlateThickness() | |
432 | + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness() ; | |
433 | Double_t angle = phi - phi0; | |
434 | x = y0 * TMath::Tan(angle) ; | |
435 | angle = theta - TMath::Pi() / 2 ; | |
436 | z = y0 * TMath::Tan(angle) ; | |
d15a28e7 | 437 | } |
d15a28e7 | 438 | } |
439 | ||
440 | //____________________________________________________________________________ | |
7b7c1533 | 441 | Bool_t AliPHOSGeometry::RelToAbsNumbering(const Int_t * relid, Int_t & AbsId) const |
d15a28e7 | 442 | { |
b2a60966 | 443 | // Converts the relative numbering into the absolute numbering |
ed4205d8 | 444 | // EMCA crystals: |
445 | // AbsId = from 1 to fNModules * fNPhi * fNZ | |
446 | // PPSD gas cell: | |
447 | // AbsId = from N(total EMCA crystals) + 1 | |
448 | // to NCPVModules * fNumberOfCPVPadsPhi * fNumberOfCPVPadsZ + | |
449 | // fNModules * 2 * (fNumberOfModulesPhi * fNumberOfModulesZ) * fNumberOfPadsPhi * fNumberOfPadsZ | |
450 | // CPV pad: | |
451 | // AbsId = from N(total PHOS crystals) + 1 | |
452 | // to NCPVModules * fNumberOfCPVPadsPhi * fNumberOfCPVPadsZ | |
d15a28e7 | 453 | |
454 | Bool_t rv = kTRUE ; | |
455 | ||
ed4205d8 | 456 | if ( relid[1] > 0 && strcmp(fName,"GPS2")==0) { // it is a PPSD pad |
457 | AbsId = GetNPhi() * GetNZ() * GetNModules() // the offset to separate EMCA crystals from PPSD pads | |
458 | + ( relid[0] - 1 ) * GetNumberOfModulesPhi() * GetNumberOfModulesZ() // the pads offset of PPSD modules | |
d15a28e7 | 459 | * GetNumberOfPadsPhi() * GetNumberOfPadsZ() * 2 |
ed4205d8 | 460 | + ( relid[1] - 1 ) * GetNumberOfPadsPhi() * GetNumberOfPadsZ() // the pads offset of PPSD modules |
461 | + ( relid[2] - 1 ) * GetNumberOfPadsPhi() // the pads offset of a PPSD row | |
462 | + relid[3] ; // the column number | |
463 | } | |
464 | ||
465 | else if ( relid[1] > 0 && strcmp(fName,"MIXT")==0) { // it is a PPSD pad | |
466 | AbsId = GetNPhi() * GetNZ() * GetNModules() // the offset to separate EMCA crystals from PPSD pads | |
467 | + GetNCPVModules() * GetNumberOfCPVPadsPhi() * GetNumberOfCPVPadsZ() // the pads offset of CPV modules if any | |
468 | + ( relid[0] - 1 - GetNCPVModules()) | |
469 | * GetNumberOfModulesPhi() * GetNumberOfModulesZ() // the pads offset of PPSD modules | |
470 | * GetNumberOfPadsPhi() * GetNumberOfPadsZ() * 2 | |
471 | + ( relid[1] - 1 ) * GetNumberOfPadsPhi() * GetNumberOfPadsZ() // the pads offset of PPSD modules | |
472 | + ( relid[2] - 1 ) * GetNumberOfPadsPhi() // the pads offset of a PPSD row | |
473 | + relid[3] ; // the column number | |
d15a28e7 | 474 | } |
52a36ffd | 475 | |
476 | else if ( relid[1] == 0 ) { // it is a Phos crystal | |
477 | AbsId = | |
478 | ( relid[0] - 1 ) * GetNPhi() * GetNZ() // the offset of PHOS modules | |
479 | + ( relid[2] - 1 ) * GetNPhi() // the offset of a xtal row | |
480 | + relid[3] ; // the column number | |
d15a28e7 | 481 | } |
482 | ||
52a36ffd | 483 | else if ( relid[1] == -1 ) { // it is a CPV pad |
484 | AbsId = GetNPhi() * GetNZ() * GetNModules() // the offset to separate EMCA crystals from CPV pads | |
ed4205d8 | 485 | + ( relid[0] - 1 ) * GetNumberOfCPVPadsPhi() * GetNumberOfCPVPadsZ() // the pads offset of PHOS modules |
486 | + ( relid[2] - 1 ) * GetNumberOfCPVPadsZ() // the pads offset of a CPV row | |
52a36ffd | 487 | + relid[3] ; // the column number |
488 | } | |
489 | ||
d15a28e7 | 490 | return rv ; |
491 | } | |
492 | ||
493 | //____________________________________________________________________________ | |
494 | ||
7b7c1533 | 495 | void AliPHOSGeometry::RelPosInAlice(const Int_t id, TVector3 & pos ) const |
d15a28e7 | 496 | { |
a4e98857 | 497 | // Converts the absolute numbering into the global ALICE coordinate system |
ed4205d8 | 498 | // It works only for the GPS2 geometry |
b2a60966 | 499 | |
ed4205d8 | 500 | if (id > 0 && strcmp(fName,"GPS2")==0) { |
501 | ||
502 | Int_t relid[4] ; | |
503 | ||
504 | AbsToRelNumbering(id , relid) ; | |
505 | ||
506 | Int_t phosmodule = relid[0] ; | |
507 | ||
508 | Float_t y0 = 0 ; | |
509 | ||
510 | if ( relid[1] == 0 ) { // it is a PbW04 crystal | |
511 | y0 = -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness() | |
512 | + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ; | |
513 | } | |
514 | if ( relid[1] > 0 ) { // its a PPSD pad | |
515 | if ( relid[1] > GetNumberOfModulesPhi() * GetNumberOfModulesZ() ) { // its an bottom module | |
516 | y0 = -( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() / 2.0) ; | |
517 | } | |
518 | else // its an upper module | |
519 | y0 = -( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() - GetLeadToMicro2Gap() | |
520 | - GetLeadConverterThickness() - GetMicro1ToLeadGap() - GetMicromegas1Thickness() / 2.0) ; | |
521 | } | |
522 | ||
523 | Float_t x, z ; | |
524 | RelPosInModule(relid, x, z) ; | |
525 | ||
526 | pos.SetX(x) ; | |
527 | pos.SetZ(z) ; | |
9cc0fcba | 528 | pos.SetY(- TMath::Sqrt(x*x + z*z + y0*y0) ) ; |
ed4205d8 | 529 | |
530 | ||
531 | ||
532 | Float_t phi = GetPHOSAngle( phosmodule) ; | |
533 | Double_t const kRADDEG = 180.0 / kPI ; | |
534 | Float_t rphi = phi / kRADDEG ; | |
535 | ||
536 | TRotation rot ; | |
537 | rot.RotateZ(-rphi) ; // a rotation around Z by angle | |
538 | ||
539 | TRotation dummy = rot.Invert() ; // to transform from original frame to rotate frame | |
540 | ||
9cc0fcba | 541 | cout << "before X,Y,Z " << pos.X() << endl << pos.Y() << endl << pos.Z() << endl; |
ed4205d8 | 542 | pos.Transform(rot) ; // rotate the baby |
9cc0fcba | 543 | cout << "X,Y,Z " << pos.X() << endl << pos.Y() << endl << pos.Z() << endl; |
d15a28e7 | 544 | } |
545 | else { | |
ed4205d8 | 546 | pos.SetX(0.); |
547 | pos.SetY(0.); | |
548 | pos.SetZ(0.); | |
549 | } | |
d15a28e7 | 550 | } |
551 | ||
552 | //____________________________________________________________________________ | |
7b7c1533 | 553 | void AliPHOSGeometry::RelPosInModule(const Int_t * relid, Float_t & x, Float_t & z) const |
d15a28e7 | 554 | { |
b2a60966 | 555 | // Converts the relative numbering into the local PHOS-module (x, z) coordinates |
52a36ffd | 556 | // Note: sign of z differs from that in the previous version (Yu.Kharlov, 12 Oct 2000) |
ed4205d8 | 557 | |
558 | Bool_t padOfCPV = (strcmp(fName,"IHEP")==0) || | |
559 | ((strcmp(fName,"MIXT")==0) && relid[0]<=GetNCPVModules()) ; | |
560 | Bool_t padOfPPSD = (strcmp(fName,"GPS2")==0) || | |
561 | ((strcmp(fName,"MIXT")==0) && relid[0]> GetNCPVModules()) ; | |
b2a60966 | 562 | |
92862013 | 563 | Int_t ppsdmodule ; |
a3dfe79c | 564 | Float_t x0,z0; |
52a36ffd | 565 | Int_t row = relid[2] ; //offset along x axiz |
566 | Int_t column = relid[3] ; //offset along z axiz | |
d15a28e7 | 567 | |
ed4205d8 | 568 | Float_t padsizeZ = 0; |
569 | Float_t padsizeX = 0; | |
570 | Int_t nOfPadsPhi = 0; | |
571 | Int_t nOfPadsZ = 0; | |
572 | if ( padOfPPSD ) { | |
573 | padsizeZ = GetPPSDModuleSize(2) / GetNumberOfPadsZ(); | |
574 | padsizeX = GetPPSDModuleSize(0) / GetNumberOfPadsPhi(); | |
575 | nOfPadsPhi = GetNumberOfPadsPhi(); | |
576 | nOfPadsZ = GetNumberOfPadsZ(); | |
577 | } | |
578 | else if ( padOfCPV ) { | |
579 | padsizeZ = GetPadSizeZ(); | |
580 | padsizeX = GetPadSizePhi(); | |
581 | nOfPadsPhi = GetNumberOfCPVPadsPhi(); | |
582 | nOfPadsZ = GetNumberOfCPVPadsZ(); | |
583 | } | |
584 | ||
92862013 | 585 | if ( relid[1] == 0 ) { // its a PbW04 crystal |
52a36ffd | 586 | x = - ( GetNPhi()/2. - row + 0.5 ) * GetCrystalSize(0) ; // position ox Xtal with respect |
587 | z = ( GetNZ() /2. - column + 0.5 ) * GetCrystalSize(2) ; // of center of PHOS module | |
588 | } | |
589 | else { | |
ed4205d8 | 590 | if ( padOfPPSD ) { |
591 | if ( relid[1] > GetNumberOfModulesPhi() * GetNumberOfModulesZ() ) | |
592 | ppsdmodule = relid[1]-GetNumberOfModulesPhi() * GetNumberOfModulesZ(); | |
593 | else | |
594 | ppsdmodule = relid[1] ; | |
595 | Int_t modrow = 1+(Int_t)TMath::Ceil( (Float_t)ppsdmodule / GetNumberOfModulesPhi()-1. ) ; | |
596 | Int_t modcol = ppsdmodule - ( modrow - 1 ) * GetNumberOfModulesPhi() ; | |
a3dfe79c | 597 | x0 = ( GetNumberOfModulesPhi() / 2. - modrow + 0.5 ) * GetPPSDModuleSize(0) ; |
598 | z0 = ( GetNumberOfModulesZ() / 2. - modcol + 0.5 ) * GetPPSDModuleSize(2) ; | |
599 | } else { | |
600 | x0 = 0; | |
601 | z0 = 0; | |
602 | } | |
ed4205d8 | 603 | x = - ( nOfPadsPhi/2. - row - 0.5 ) * padsizeX + x0 ; // position of pad with respect |
604 | z = ( nOfPadsZ /2. - column - 0.5 ) * padsizeZ - z0 ; // of center of PHOS module | |
52a36ffd | 605 | } |
2f3366b6 | 606 | } |