1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 //_________________________________________________________________________
19 // Geometry class for PHOS : singleton
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.
27 //*-- Author: Yves Schutz (SUBATECH)
29 // --- ROOT system ---
32 #include "TRotation.h"
34 // --- Standard library ---
38 // --- AliRoot header files ---
40 #include "AliPHOSGeometry.h"
41 #include "AliPHOSEMCAGeometry.h"
42 #include "AliPHOSPpsdRecPoint.h"
45 ClassImp(AliPHOSGeometry) ;
47 AliPHOSGeometry * AliPHOSGeometry::fgGeom = 0 ;
48 Bool_t AliPHOSGeometry::fgInit = kFALSE ;
50 //____________________________________________________________________________
51 AliPHOSGeometry::~AliPHOSGeometry(void)
55 if (fRotMatrixArray) fRotMatrixArray->Delete() ;
56 if (fRotMatrixArray) delete fRotMatrixArray ;
57 if (fPHOSAngle ) delete fPHOSAngle ;
60 //____________________________________________________________________________
62 void AliPHOSGeometry::Init(void)
64 // Initializes the PHOS parameters
66 if ( ((strcmp( fName, "default" )) == 0) ||
67 ((strcmp( fName, "GPS2" )) == 0) ||
68 ((strcmp( fName, "IHEP" )) == 0) ||
69 ((strcmp( fName, "MIXT" )) == 0) ) {
76 fGeometryEMCA = new AliPHOSEMCAGeometry();
77 if ( ((strcmp( fName, "GPS2" )) == 0) ) {
78 fGeometryPPSD = new AliPHOSPPSDGeometry();
80 fNPPSDModules = fNModules;
82 else if ( ((strcmp( fName, "IHEP" )) == 0) ) {
83 fGeometryCPV = new AliPHOSCPVGeometry ();
87 else if ( ((strcmp( fName, "MIXT" )) == 0) ) {
88 fGeometryCPV = new AliPHOSCPVGeometry ();
89 fGeometryPPSD = new AliPHOSPPSDGeometry();
92 fGeometrySUPP = new AliPHOSSupportGeometry();
94 fPHOSAngle = new Float_t[fNModules] ;
96 for ( index = 0; index < fNModules; index++ )
97 fPHOSAngle[index] = 0.0 ; // Module position angles are set in CreateGeometry()
99 this->SetPHOSAngles() ;
100 fRotMatrixArray = new TObjArray(fNModules) ;
104 cout << "PHOS Geometry setup: option not defined " << fName << endl ;
108 //____________________________________________________________________________
109 Float_t AliPHOSGeometry::GetCPVBoxSize(Int_t index) const {
110 if (strcmp(fName,"GPS2") ==0 )
111 return fGeometryPPSD->GetCPVBoxSize(index);
112 else if (strcmp(fName,"IHEP")==0)
113 return fGeometryCPV ->GetCPVBoxSize(index);
114 else if (strcmp(fName,"MIXT")==0)
115 return TMath::Max(fGeometryCPV ->GetCPVBoxSize(index), fGeometryPPSD->GetCPVBoxSize(index));
120 //____________________________________________________________________________
121 AliPHOSGeometry * AliPHOSGeometry::GetInstance()
123 // Returns the pointer of the unique instance
124 return (AliPHOSGeometry *) fgGeom ;
127 //____________________________________________________________________________
128 AliPHOSGeometry * AliPHOSGeometry::GetInstance(const Text_t* name, const Text_t* title)
130 // Returns the pointer of the unique instance
131 AliPHOSGeometry * rv = 0 ;
133 if ( strcmp(name,"") == 0 )
136 fgGeom = new AliPHOSGeometry(name, title) ;
138 rv = (AliPHOSGeometry * ) fgGeom ;
147 if ( strcmp(fgGeom->GetName(), name) != 0 ) {
148 cout << "AliPHOSGeometry <E> : current geometry is " << fgGeom->GetName() << endl
149 << " you cannot call " << name << endl ;
152 rv = (AliPHOSGeometry *) fgGeom ;
157 //____________________________________________________________________________
158 void AliPHOSGeometry::SetPHOSAngles()
160 // Calculates the position in ALICE of the PHOS modules
162 Double_t const kRADDEG = 180.0 / kPI ;
163 Float_t pphi = 2 * TMath::ATan( GetOuterBoxSize(0) / ( 2.0 * GetIPtoOuterCoverDistance() ) ) ;
165 if (pphi > fAngle) cout << "AliPHOSGeometry: PHOS modules overlap!\n";
168 for( Int_t i = 1; i <= fNModules ; i++ ) {
169 Float_t angle = pphi * ( i - fNModules / 2.0 - 0.5 ) ;
170 fPHOSAngle[i-1] = - angle ;
174 //____________________________________________________________________________
175 Bool_t AliPHOSGeometry::AbsToRelNumbering(const Int_t AbsId, Int_t * relid)
177 // Converts the absolute numbering into the following array/
178 // relid[0] = PHOS Module number 1:fNModules
179 // relid[1] = 0 if PbW04
180 // = PPSD Module number 1:fNumberOfModulesPhi*fNumberOfModulesZ*2 (2->up and bottom level)
181 // relid[2] = Row number inside a PHOS or PPSD module
182 // relid[3] = Column number inside a PHOS or PPSD module
187 Int_t phosmodulenumber = (Int_t)TMath:: Ceil( id / ( GetNPhi() * GetNZ() ) ) ;
189 if ( phosmodulenumber > GetNModules() ) { // it is a PPSD or CPV pad
191 if ( strcmp(fName,"GPS2") == 0 ) {
192 id -= GetNPhi() * GetNZ() * GetNModules() ;
193 Float_t tempo = 2 * GetNumberOfModulesPhi() * GetNumberOfModulesZ() * GetNumberOfPadsPhi() * GetNumberOfPadsZ() ;
194 relid[0] = (Int_t)TMath::Ceil( id / tempo ) ;
195 id -= ( relid[0] - 1 ) * tempo ;
196 relid[1] = (Int_t)TMath::Ceil( id / ( GetNumberOfPadsPhi() * GetNumberOfPadsZ() ) ) ;
197 id -= ( relid[1] - 1 ) * GetNumberOfPadsPhi() * GetNumberOfPadsZ() ;
198 relid[2] = (Int_t)TMath::Ceil( id / GetNumberOfPadsPhi() ) ;
199 relid[3] = (Int_t) ( id - ( relid[2] - 1 ) * GetNumberOfPadsPhi() ) ;
201 else if ( strcmp(fName,"IHEP") == 0 ) {
202 id -= GetNPhi() * GetNZ() * GetNModules() ;
203 Float_t nCPV = GetNumberOfCPVPadsPhi() * GetNumberOfCPVPadsZ() ;
204 relid[0] = (Int_t) TMath::Ceil( id / nCPV ) ;
206 id -= ( relid[0] - 1 ) * nCPV ;
207 relid[2] = (Int_t) TMath::Ceil( id / GetNumberOfCPVPadsZ() ) ;
208 relid[3] = (Int_t) ( id - ( relid[2] - 1 ) * GetNumberOfCPVPadsZ() ) ;
210 else if ( strcmp(fName,"MIXT") == 0 ) {
211 id -= GetNPhi() * GetNZ() * GetNModules() ;
212 Float_t nPPSD = 2 * GetNumberOfModulesPhi() * GetNumberOfModulesZ() * GetNumberOfPadsPhi() * GetNumberOfPadsZ() ;
213 Float_t nCPV = GetNumberOfCPVPadsPhi() * GetNumberOfCPVPadsZ() ;
214 if (id <= nCPV*GetNCPVModules()) { // this pad belons to CPV
215 relid[0] = (Int_t) TMath::Ceil( id / nCPV ) ;
217 id -= ( relid[0] - 1 ) * nCPV ;
218 relid[2] = (Int_t) TMath::Ceil( id / GetNumberOfCPVPadsZ() ) ;
219 relid[3] = (Int_t) ( id - ( relid[2] - 1 ) * GetNumberOfCPVPadsZ() ) ;
221 else { // this pad belons to PPSD
222 id -= nCPV*GetNCPVModules();
223 relid[0] = (Int_t)TMath::Ceil( id / nPPSD );
224 id -= ( relid[0] - 1 ) * nPPSD ;
225 relid[0] += GetNCPVModules();
226 relid[1] = (Int_t)TMath::Ceil( id / ( GetNumberOfPadsPhi() * GetNumberOfPadsZ() ) ) ;
227 id -= ( relid[1] - 1 ) * GetNumberOfPadsPhi() * GetNumberOfPadsZ() ;
228 relid[2] = (Int_t)TMath::Ceil( id / GetNumberOfPadsPhi() ) ;
229 relid[3] = (Int_t) ( id - ( relid[2] - 1 ) * GetNumberOfPadsPhi() ) ;
233 else { // its a PW04 crystal
235 relid[0] = phosmodulenumber ;
237 id -= ( phosmodulenumber - 1 ) * GetNPhi() * GetNZ() ;
238 relid[2] = (Int_t)TMath::Ceil( id / GetNPhi() ) ;
239 relid[3] = (Int_t)( id - ( relid[2] - 1 ) * GetNPhi() ) ;
244 //____________________________________________________________________________
245 void AliPHOSGeometry::EmcModuleCoverage(const Int_t mod, Double_t & tm, Double_t & tM, Double_t & pm, Double_t & pM, Option_t * opt)
247 // calculates the angular coverage in theta and phi of a EMC module
250 if ( opt == Radian() )
252 else if ( opt == Degre() )
253 conv = 180. / TMath::Pi() ;
255 cout << "<I> AliPHOSGeometry::EmcXtalCoverage : " << opt << " unknown option; result in radian " << endl ;
259 Float_t phi = GetPHOSAngle(mod) * (TMath::Pi() / 180.) ;
260 Float_t y0 = GetIPtoOuterCoverDistance() + GetUpperPlateThickness()
261 + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness() ;
263 Double_t angle = TMath::ATan( GetCrystalSize(0)*GetNPhi() / (2 * y0) ) ;
264 phi = phi + 1.5 * TMath::Pi() ; // to follow the convention of the particle generator(PHOS is between 230 and 310 deg.)
265 Double_t max = phi - angle ;
266 Double_t min = phi + angle ;
267 pM = TMath::Max(max, min) * conv ;
268 pm = TMath::Min(max, min) * conv ;
270 angle = TMath::ATan( GetCrystalSize(2)*GetNZ() / (2 * y0) ) ;
271 max = TMath::Pi() / 2. + angle ; // to follow the convention of the particle generator(PHOS is at 90 deg.)
272 min = TMath::Pi() / 2. - angle ;
273 tM = TMath::Max(max, min) * conv ;
274 tm = TMath::Min(max, min) * conv ;
278 //____________________________________________________________________________
279 void AliPHOSGeometry::EmcXtalCoverage(Double_t & theta, Double_t & phi, Option_t * opt)
281 // calculates the angular coverage in theta and phi of a single crystal in a EMC module
284 if ( opt == Radian() )
286 else if ( opt == Degre() )
287 conv = 180. / TMath::Pi() ;
289 cout << "<I> AliPHOSGeometry::EmcXtalCoverage : " << opt << " unknown option; result in radian " << endl ;
293 Float_t y0 = GetIPtoOuterCoverDistance() + GetUpperPlateThickness()
294 + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness() ;
295 theta = 2 * TMath::ATan( GetCrystalSize(2) / (2 * y0) ) * conv ;
296 phi = 2 * TMath::ATan( GetCrystalSize(0) / (2 * y0) ) * conv ;
300 //____________________________________________________________________________
301 void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos, TMatrix & gmat) const
303 // Calculates the ALICE global coordinates of a RecPoint and the error matrix
305 AliPHOSRecPoint * tmpPHOS = (AliPHOSRecPoint *) RecPoint ;
306 TVector3 localposition ;
308 tmpPHOS->GetLocalPosition(gpos) ;
311 if ( tmpPHOS->IsEmc() ) // it is a EMC crystal
312 { gpos.SetY( -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness() +
313 GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ) ;
317 { // it is a PPSD pad
318 AliPHOSPpsdRecPoint * tmpPpsd = (AliPHOSPpsdRecPoint *) RecPoint ;
319 if (tmpPpsd->GetUp() ) // it is an upper module
321 gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() -
322 GetLeadToMicro2Gap() - GetLeadConverterThickness() -
323 GetMicro1ToLeadGap() - GetMicromegas1Thickness() / 2.0 ) ) ;
325 else // it is a lower module
326 gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() / 2.0) ) ;
329 Float_t phi = GetPHOSAngle( tmpPHOS->GetPHOSMod()) ;
330 Double_t const kRADDEG = 180.0 / kPI ;
331 Float_t rphi = phi / kRADDEG ;
334 rot.RotateZ(-rphi) ; // a rotation around Z by angle
336 TRotation dummy = rot.Invert() ; // to transform from original frame to rotate frame
337 gpos.Transform(rot) ; // rotate the baby
341 //____________________________________________________________________________
342 void AliPHOSGeometry::GetGlobal(const AliRecPoint* RecPoint, TVector3 & gpos) const
344 // Calculates the ALICE global coordinates of a RecPoint
346 AliPHOSRecPoint * tmpPHOS = (AliPHOSRecPoint *) RecPoint ;
347 TVector3 localposition ;
348 tmpPHOS->GetLocalPosition(gpos) ;
351 if ( tmpPHOS->IsEmc() ) // it is a EMC crystal
352 { gpos.SetY( -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness() +
353 GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ) ;
356 { // it is a PPSD pad
357 AliPHOSPpsdRecPoint * tmpPpsd = (AliPHOSPpsdRecPoint *) RecPoint ;
358 if (tmpPpsd->GetUp() ) // it is an upper module
360 gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() -
361 GetLeadToMicro2Gap() - GetLeadConverterThickness() -
362 GetMicro1ToLeadGap() - GetMicromegas1Thickness() / 2.0 ) ) ;
364 else // it is a lower module
365 gpos.SetY(-( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() / 2.0) ) ;
368 Float_t phi = GetPHOSAngle( tmpPHOS->GetPHOSMod()) ;
369 Double_t const kRADDEG = 180.0 / kPI ;
370 Float_t rphi = phi / kRADDEG ;
373 rot.RotateZ(-rphi) ; // a rotation around Z by angle
375 TRotation dummy = rot.Invert() ; // to transform from original frame to rotate frame
376 gpos.Transform(rot) ; // rotate the baby
379 //____________________________________________________________________________
380 void AliPHOSGeometry::ImpactOnEmc(const Double_t theta, const Double_t phi, Int_t & ModuleNumber, Double_t & z, Double_t & x)
382 // calculates the impact coordinates of a neutral particle
383 // emitted in direction theta and phi in ALICE
385 // searches for the PHOS EMC module
387 Double_t tm, tM, pm, pM ;
389 while ( ModuleNumber == 0 && index <= GetNModules() ) {
390 EmcModuleCoverage(index, tm, tM, pm, pM) ;
391 if ( (theta >= tm && theta <= tM) && (phi >= pm && phi <= pM ) )
392 ModuleNumber = index ;
395 if ( ModuleNumber != 0 ) {
396 Float_t phi0 = GetPHOSAngle(ModuleNumber) * (TMath::Pi() / 180.) + 1.5 * TMath::Pi() ;
397 Float_t y0 = GetIPtoOuterCoverDistance() + GetUpperPlateThickness()
398 + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness() ;
399 Double_t angle = phi - phi0;
400 x = y0 * TMath::Tan(angle) ;
401 angle = theta - TMath::Pi() / 2 ;
402 z = y0 * TMath::Tan(angle) ;
406 //____________________________________________________________________________
407 Bool_t AliPHOSGeometry::RelToAbsNumbering(const Int_t * relid, Int_t & AbsId)
409 // Converts the relative numbering into the absolute numbering
411 // AbsId = from 1 to fNModules * fNPhi * fNZ
413 // AbsId = from N(total EMCA crystals) + 1
414 // to NCPVModules * fNumberOfCPVPadsPhi * fNumberOfCPVPadsZ +
415 // fNModules * 2 * (fNumberOfModulesPhi * fNumberOfModulesZ) * fNumberOfPadsPhi * fNumberOfPadsZ
417 // AbsId = from N(total PHOS crystals) + 1
418 // to NCPVModules * fNumberOfCPVPadsPhi * fNumberOfCPVPadsZ
422 if ( relid[1] > 0 && strcmp(fName,"GPS2")==0) { // it is a PPSD pad
423 AbsId = GetNPhi() * GetNZ() * GetNModules() // the offset to separate EMCA crystals from PPSD pads
424 + ( relid[0] - 1 ) * GetNumberOfModulesPhi() * GetNumberOfModulesZ() // the pads offset of PPSD modules
425 * GetNumberOfPadsPhi() * GetNumberOfPadsZ() * 2
426 + ( relid[1] - 1 ) * GetNumberOfPadsPhi() * GetNumberOfPadsZ() // the pads offset of PPSD modules
427 + ( relid[2] - 1 ) * GetNumberOfPadsPhi() // the pads offset of a PPSD row
428 + relid[3] ; // the column number
431 else if ( relid[1] > 0 && strcmp(fName,"MIXT")==0) { // it is a PPSD pad
432 AbsId = GetNPhi() * GetNZ() * GetNModules() // the offset to separate EMCA crystals from PPSD pads
433 + GetNCPVModules() * GetNumberOfCPVPadsPhi() * GetNumberOfCPVPadsZ() // the pads offset of CPV modules if any
434 + ( relid[0] - 1 - GetNCPVModules())
435 * GetNumberOfModulesPhi() * GetNumberOfModulesZ() // the pads offset of PPSD modules
436 * GetNumberOfPadsPhi() * GetNumberOfPadsZ() * 2
437 + ( relid[1] - 1 ) * GetNumberOfPadsPhi() * GetNumberOfPadsZ() // the pads offset of PPSD modules
438 + ( relid[2] - 1 ) * GetNumberOfPadsPhi() // the pads offset of a PPSD row
439 + relid[3] ; // the column number
442 else if ( relid[1] == 0 ) { // it is a Phos crystal
444 ( relid[0] - 1 ) * GetNPhi() * GetNZ() // the offset of PHOS modules
445 + ( relid[2] - 1 ) * GetNPhi() // the offset of a xtal row
446 + relid[3] ; // the column number
449 else if ( relid[1] == -1 ) { // it is a CPV pad
450 AbsId = GetNPhi() * GetNZ() * GetNModules() // the offset to separate EMCA crystals from CPV pads
451 + ( relid[0] - 1 ) * GetNumberOfCPVPadsPhi() * GetNumberOfCPVPadsZ() // the pads offset of PHOS modules
452 + ( relid[2] - 1 ) * GetNumberOfCPVPadsZ() // the pads offset of a CPV row
453 + relid[3] ; // the column number
459 //____________________________________________________________________________
461 void AliPHOSGeometry::RelPosInAlice(const Int_t id, TVector3 & pos )
463 // Converts the absolute numbering into the global ALICE coordinates
464 // It works only for the GPS2 geometry
466 if (id > 0 && strcmp(fName,"GPS2")==0) {
470 AbsToRelNumbering(id , relid) ;
472 Int_t phosmodule = relid[0] ;
476 if ( relid[1] == 0 ) { // it is a PbW04 crystal
477 y0 = -(GetIPtoOuterCoverDistance() + GetUpperPlateThickness()
478 + GetSecondUpperPlateThickness() + GetUpperCoolingPlateThickness()) ;
480 if ( relid[1] > 0 ) { // its a PPSD pad
481 if ( relid[1] > GetNumberOfModulesPhi() * GetNumberOfModulesZ() ) { // its an bottom module
482 y0 = -( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() / 2.0) ;
484 else // its an upper module
485 y0 = -( GetIPtoOuterCoverDistance() - GetMicromegas2Thickness() - GetLeadToMicro2Gap()
486 - GetLeadConverterThickness() - GetMicro1ToLeadGap() - GetMicromegas1Thickness() / 2.0) ;
490 RelPosInModule(relid, x, z) ;
494 pos.SetY( TMath::Sqrt(x*x + z*z + y0*y0) ) ;
498 Float_t phi = GetPHOSAngle( phosmodule) ;
499 Double_t const kRADDEG = 180.0 / kPI ;
500 Float_t rphi = phi / kRADDEG ;
503 rot.RotateZ(-rphi) ; // a rotation around Z by angle
505 TRotation dummy = rot.Invert() ; // to transform from original frame to rotate frame
507 pos.Transform(rot) ; // rotate the baby
516 //____________________________________________________________________________
517 void AliPHOSGeometry::RelPosInModule(const Int_t * relid, Float_t & x, Float_t & z)
519 // Converts the relative numbering into the local PHOS-module (x, z) coordinates
520 // Note: sign of z differs from that in the previous version (Yu.Kharlov, 12 Oct 2000)
522 Bool_t padOfCPV = (strcmp(fName,"IHEP")==0) ||
523 ((strcmp(fName,"MIXT")==0) && relid[0]<=GetNCPVModules()) ;
524 Bool_t padOfPPSD = (strcmp(fName,"GPS2")==0) ||
525 ((strcmp(fName,"MIXT")==0) && relid[0]> GetNCPVModules()) ;
529 Int_t row = relid[2] ; //offset along x axiz
530 Int_t column = relid[3] ; //offset along z axiz
532 Float_t padsizeZ = 0;
533 Float_t padsizeX = 0;
534 Int_t nOfPadsPhi = 0;
537 padsizeZ = GetPPSDModuleSize(2) / GetNumberOfPadsZ();
538 padsizeX = GetPPSDModuleSize(0) / GetNumberOfPadsPhi();
539 nOfPadsPhi = GetNumberOfPadsPhi();
540 nOfPadsZ = GetNumberOfPadsZ();
542 else if ( padOfCPV ) {
543 padsizeZ = GetPadSizeZ();
544 padsizeX = GetPadSizePhi();
545 nOfPadsPhi = GetNumberOfCPVPadsPhi();
546 nOfPadsZ = GetNumberOfCPVPadsZ();
549 if ( relid[1] == 0 ) { // its a PbW04 crystal
550 x = - ( GetNPhi()/2. - row + 0.5 ) * GetCrystalSize(0) ; // position ox Xtal with respect
551 z = ( GetNZ() /2. - column + 0.5 ) * GetCrystalSize(2) ; // of center of PHOS module
555 if ( relid[1] > GetNumberOfModulesPhi() * GetNumberOfModulesZ() )
556 ppsdmodule = relid[1]-GetNumberOfModulesPhi() * GetNumberOfModulesZ();
558 ppsdmodule = relid[1] ;
559 Int_t modrow = 1+(Int_t)TMath::Ceil( (Float_t)ppsdmodule / GetNumberOfModulesPhi()-1. ) ;
560 Int_t modcol = ppsdmodule - ( modrow - 1 ) * GetNumberOfModulesPhi() ;
561 x0 = ( GetNumberOfModulesPhi() / 2. - modrow + 0.5 ) * GetPPSDModuleSize(0) ;
562 z0 = ( GetNumberOfModulesZ() / 2. - modcol + 0.5 ) * GetPPSDModuleSize(2) ;
567 x = - ( nOfPadsPhi/2. - row - 0.5 ) * padsizeX + x0 ; // position of pad with respect
568 z = ( nOfPadsZ /2. - column - 0.5 ) * padsizeZ - z0 ; // of center of PHOS module