Loaders removed from the reconstruction code (C.Cheshkov)
[u/mrichter/AliRoot.git] / PHOS / AliPHOSGeometry.cxx
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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//
05d33a3d 27// -- Author: Yves Schutz (SUBATECH) & Dmitri Peressounko (RRC "KI" & SUBATECH)
d15a28e7 28
29// --- ROOT system ---
30
31#include "TVector3.h"
32#include "TRotation.h"
e957fea8 33#include "TParticle.h"
91daaf24 34#include <TGeoManager.h>
d15a28e7 35
36// --- Standard library ---
37
d15a28e7 38// --- AliRoot header files ---
351dd634 39#include "AliLog.h"
d15a28e7 40#include "AliPHOSGeometry.h"
468794ea 41#include "AliPHOSEMCAGeometry.h"
710f859a 42#include "AliPHOSRecPoint.h"
d15a28e7 43
925e6570 44ClassImp(AliPHOSGeometry)
d15a28e7 45
a4e98857 46// these initialisations are needed for a singleton
05d33a3d 47AliPHOSGeometry * AliPHOSGeometry::fgGeom = 0 ;
48Bool_t AliPHOSGeometry::fgInit = kFALSE ;
9ec91567 49
d15a28e7 50//____________________________________________________________________________
3663622c 51AliPHOSGeometry::AliPHOSGeometry() :
52 fNModules(0),
53 fAngle(0.f),
54 fPHOSAngle(0),
55 fIPtoUpperCPVsurface(0),
56 fRotMatrixArray(0),
57 fGeometryEMCA(0),
58 fGeometryCPV(0),
59 fGeometrySUPP(0)
60{
e957fea8 61 // default ctor
62 // must be kept public for root persistency purposes, but should never be called by the outside world
e957fea8 63 fgGeom = 0 ;
e957fea8 64}
65
66//____________________________________________________________________________
3663622c 67AliPHOSGeometry::AliPHOSGeometry(const AliPHOSGeometry & rhs)
68 : AliGeometry(rhs),
69 fNModules(rhs.fNModules),
70 fAngle(rhs.fAngle),
71 fPHOSAngle(0),
72 fIPtoUpperCPVsurface(rhs.fIPtoUpperCPVsurface),
73 fRotMatrixArray(0),
74 fGeometryEMCA(0),
75 fGeometryCPV(0),
76 fGeometrySUPP(0)
77{
78 Fatal("cpy ctor", "not implemented") ;
79}
80
91daaf24 81//____________________________________________________________________________
3663622c 82AliPHOSGeometry::AliPHOSGeometry(const Text_t* name, const Text_t* title)
83 : AliGeometry(name, title),
84 fNModules(0),
85 fAngle(0.f),
86 fPHOSAngle(0),
87 fIPtoUpperCPVsurface(0),
88 fRotMatrixArray(0),
89 fGeometryEMCA(0),
90 fGeometryCPV(0),
91 fGeometrySUPP(0)
92{
93 // ctor only for internal usage (singleton)
94 Init() ;
9a2cdbdf 95 fgGeom = this;
3663622c 96}
97
3663622c 98//____________________________________________________________________________
d15a28e7 99AliPHOSGeometry::~AliPHOSGeometry(void)
100{
b2a60966 101 // dtor
102
52a36ffd 103 if (fRotMatrixArray) fRotMatrixArray->Delete() ;
104 if (fRotMatrixArray) delete fRotMatrixArray ;
fa0bc588 105 if (fPHOSAngle ) delete[] fPHOSAngle ;
52a36ffd 106}
52a36ffd 107
91daaf24 108//____________________________________________________________________________
52a36ffd 109void AliPHOSGeometry::Init(void)
110{
a4e98857 111 // Initializes the PHOS parameters :
112 // IHEP is the Protvino CPV (cathode pad chambers)
710f859a 113
809cd394 114 TString test(GetName()) ;
9d1b528b 115 if (test != "IHEP" && test != "noCPV") {
351dd634 116 AliFatal(Form("%s is not a known geometry (choose among IHEP)",
117 test.Data() )) ;
809cd394 118 }
119
710f859a 120 fgInit = kTRUE ;
05d33a3d 121
85698486 122 fNModules = 5;
123 fAngle = 20;
05d33a3d 124
710f859a 125 fGeometryEMCA = new AliPHOSEMCAGeometry();
126
127 fGeometryCPV = new AliPHOSCPVGeometry ();
128
129 fGeometrySUPP = new AliPHOSSupportGeometry();
130
131 fPHOSAngle = new Float_t[fNModules] ;
132
133 Float_t * emcParams = fGeometryEMCA->GetEMCParams() ;
134
581e32d4 135 fPHOSParams[0] = TMath::Max((Double_t)fGeometryCPV->GetCPVBoxSize(0)/2.,
a83b6179 136 (Double_t)(emcParams[0] - (emcParams[1]-emcParams[0])*
137 fGeometryCPV->GetCPVBoxSize(1)/2/emcParams[3]));
710f859a 138 fPHOSParams[1] = emcParams[1] ;
581e32d4 139 fPHOSParams[2] = TMath::Max((Double_t)emcParams[2], (Double_t)fGeometryCPV->GetCPVBoxSize(2)/2.);
710f859a 140 fPHOSParams[3] = emcParams[3] + fGeometryCPV->GetCPVBoxSize(1)/2. ;
141
142 fIPtoUpperCPVsurface = fGeometryEMCA->GetIPtoOuterCoverDistance() - fGeometryCPV->GetCPVBoxSize(1) ;
8e20650f 143
144 //calculate offset to crystal surface
145 Float_t * inthermo = fGeometryEMCA->GetInnerThermoHalfSize() ;
146 Float_t * strip = fGeometryEMCA->GetStripHalfSize() ;
147 Float_t* splate = fGeometryEMCA->GetSupportPlateHalfSize();
148 Float_t * crystal = fGeometryEMCA->GetCrystalHalfSize() ;
149 Float_t * pin = fGeometryEMCA->GetAPDHalfSize() ;
150 Float_t * preamp = fGeometryEMCA->GetPreampHalfSize() ;
151 fCrystalShift=-inthermo[1]+strip[1]+splate[1]+crystal[1]-fGeometryEMCA->GetAirGapLed()/2.+pin[1]+preamp[1] ;
152 fCryCellShift=crystal[1]-(fGeometryEMCA->GetAirGapLed()-2*pin[1]-2*preamp[1])/2;
153
710f859a 154 Int_t index ;
155 for ( index = 0; index < fNModules; index++ )
52a36ffd 156 fPHOSAngle[index] = 0.0 ; // Module position angles are set in CreateGeometry()
710f859a 157
710f859a 158 fRotMatrixArray = new TObjArray(fNModules) ;
05d33a3d 159
85698486 160 // Geometry parameters are calculated
161
162 SetPHOSAngles();
163 Double_t const kRADDEG = 180.0 / TMath::Pi() ;
164 Float_t r = GetIPtoOuterCoverDistance() + fPHOSParams[3] - GetCPVBoxSize(1) ;
165 for (Int_t iModule=0; iModule<fNModules; iModule++) {
166 fModuleCenter[iModule][0] = r * TMath::Sin(fPHOSAngle[iModule] / kRADDEG );
167 fModuleCenter[iModule][1] =-r * TMath::Cos(fPHOSAngle[iModule] / kRADDEG );
168 fModuleCenter[iModule][2] = 0.;
169
170 fModuleAngle[iModule][0][0] = 90;
171 fModuleAngle[iModule][0][1] = fPHOSAngle[iModule];
172 fModuleAngle[iModule][1][0] = 0;
173 fModuleAngle[iModule][1][1] = 0;
174 fModuleAngle[iModule][2][0] = 90;
175 fModuleAngle[iModule][2][1] = 270 + fPHOSAngle[iModule];
05d33a3d 176 }
177
52a36ffd 178}
179
5ccb0008 180//____________________________________________________________________________
52a36ffd 181AliPHOSGeometry * AliPHOSGeometry::GetInstance()
182{
a4e98857 183 // Returns the pointer of the unique instance; singleton specific
184
809cd394 185 return static_cast<AliPHOSGeometry *>( fgGeom ) ;
52a36ffd 186}
187
188//____________________________________________________________________________
189AliPHOSGeometry * AliPHOSGeometry::GetInstance(const Text_t* name, const Text_t* title)
190{
191 // Returns the pointer of the unique instance
a4e98857 192 // Creates it with the specified options (name, title) if it does not exist yet
193
52a36ffd 194 AliPHOSGeometry * rv = 0 ;
195 if ( fgGeom == 0 ) {
196 if ( strcmp(name,"") == 0 )
197 rv = 0 ;
198 else {
199 fgGeom = new AliPHOSGeometry(name, title) ;
200 if ( fgInit )
201 rv = (AliPHOSGeometry * ) fgGeom ;
202 else {
203 rv = 0 ;
204 delete fgGeom ;
205 fgGeom = 0 ;
206 }
207 }
208 }
209 else {
21cd0c07 210 if ( strcmp(fgGeom->GetName(), name) != 0 )
351dd634 211 ::Error("GetInstance", "Current geometry is %s. You cannot call %s",
212 fgGeom->GetName(), name) ;
52a36ffd 213 else
214 rv = (AliPHOSGeometry *) fgGeom ;
215 }
216 return rv ;
217}
4697edca 218
52a36ffd 219//____________________________________________________________________________
220void AliPHOSGeometry::SetPHOSAngles()
221{
a4e98857 222 // Calculates the position of the PHOS modules in ALICE global coordinate system
91daaf24 223 // in ideal geometry
52a36ffd 224
a8c47ab6 225 Double_t const kRADDEG = 180.0 / TMath::Pi() ;
710f859a 226 Float_t pphi = 2 * TMath::ATan( GetOuterBoxSize(0) / ( 2.0 * GetIPtoUpperCPVsurface() ) ) ;
52a36ffd 227 pphi *= kRADDEG ;
710f859a 228 if (pphi > fAngle){
351dd634 229 AliError(Form("PHOS modules overlap!\n pphi = %f fAngle = %f",
230 pphi, fAngle));
710f859a 231
232 }
ed4205d8 233 pphi = fAngle;
52a36ffd 234
235 for( Int_t i = 1; i <= fNModules ; i++ ) {
ed4205d8 236 Float_t angle = pphi * ( i - fNModules / 2.0 - 0.5 ) ;
52a36ffd 237 fPHOSAngle[i-1] = - angle ;
238 }
d15a28e7 239}
240
241//____________________________________________________________________________
fd6f5ab1 242Bool_t AliPHOSGeometry::AbsToRelNumbering(Int_t absId, Int_t * relid) const
d15a28e7 243{
91daaf24 244 // Converts the absolute numbering into the following array
b2a60966 245 // relid[0] = PHOS Module number 1:fNModules
246 // relid[1] = 0 if PbW04
710f859a 247 // = -1 if CPV
248 // relid[2] = Row number inside a PHOS module
249 // relid[3] = Column number inside a PHOS module
d15a28e7 250
251 Bool_t rv = kTRUE ;
fd6f5ab1 252 Float_t id = absId ;
d15a28e7 253
710f859a 254 Int_t phosmodulenumber = (Int_t)TMath:: Ceil( id / GetNCristalsInModule() ) ;
d15a28e7 255
710f859a 256 if ( phosmodulenumber > GetNModules() ) { // it is a CPV pad
257
258 id -= GetNPhi() * GetNZ() * GetNModules() ;
259 Float_t nCPV = GetNumberOfCPVPadsPhi() * GetNumberOfCPVPadsZ() ;
260 relid[0] = (Int_t) TMath::Ceil( id / nCPV ) ;
261 relid[1] = -1 ;
262 id -= ( relid[0] - 1 ) * nCPV ;
263 relid[2] = (Int_t) TMath::Ceil( id / GetNumberOfCPVPadsZ() ) ;
264 relid[3] = (Int_t) ( id - ( relid[2] - 1 ) * GetNumberOfCPVPadsZ() ) ;
d15a28e7 265 }
710f859a 266 else { // it is a PW04 crystal
d15a28e7 267
92862013 268 relid[0] = phosmodulenumber ;
269 relid[1] = 0 ;
270 id -= ( phosmodulenumber - 1 ) * GetNPhi() * GetNZ() ;
710f859a 271 relid[2] = (Int_t)TMath::Ceil( id / GetNZ() ) ;
272 relid[3] = (Int_t)( id - ( relid[2] - 1 ) * GetNZ() ) ;
d15a28e7 273 }
274 return rv ;
275}
9f616d61 276//____________________________________________________________________________
91daaf24 277void AliPHOSGeometry::GetGlobal(const AliRecPoint* recPoint, TVector3 & gpos) const
d15a28e7 278{
9ee9f78d 279 AliFatal(Form("Please use GetGlobalPHOS(recPoint,gpos) instead of GetGlobal!"));
280}
281
282//____________________________________________________________________________
283void AliPHOSGeometry::GetGlobalPHOS(const AliPHOSRecPoint* recPoint, TVector3 & gpos) const
284{
a4e98857 285 // Calculates the coordinates of a RecPoint and the error matrix in the ALICE global coordinate system
b2a60966 286
9ee9f78d 287 const AliPHOSRecPoint * tmpPHOS = recPoint ;
92862013 288 TVector3 localposition ;
d15a28e7 289
290 tmpPHOS->GetLocalPosition(gpos) ;
291
91daaf24 292 if (!gGeoManager){
293 AliFatal("Geo manager not initialized\n");
d15a28e7 294 }
91daaf24 295 //construct module name
296 char path[100] ;
297 Double_t dy ;
298 if(tmpPHOS->IsEmc()){
299 sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",tmpPHOS->GetPHOSMod()) ;
8e20650f 300// sprintf(path,"/ALIC_1/PHOS_%d",tmpPHOS->GetPHOSMod()) ;
301 dy=fCrystalShift ;
d15a28e7 302 }
91daaf24 303 else{
304 sprintf(path,"/ALIC_1/PHOS_%d/PCPV_1",tmpPHOS->GetPHOSMod()) ;
305 dy= GetCPVBoxSize(1)/2. ; //center of CPV module
306 }
307 Double_t pos[3]={gpos.X(),gpos.Y()-dy,gpos.Z()} ;
8e20650f 308 if(tmpPHOS->IsEmc())
309 pos[2]=-pos[2] ; //Opposite z directions in EMC matrix and local frame!!!
91daaf24 310 Double_t posC[3];
311 //now apply possible shifts and rotations
312 if (!gGeoManager->cd(path)){
313 AliFatal("Geo manager can not find path \n");
314 }
315 TGeoHMatrix *m = gGeoManager->GetCurrentMatrix();
8e20650f 316 if (m){
317 m->LocalToMaster(pos,posC);
318 }
91daaf24 319 else{
320 AliFatal("Geo matrixes are not loaded \n") ;
321 }
8e20650f 322 gpos.SetXYZ(posC[0],posC[1],posC[2]) ;
7b51037f 323
aa35fc01 324}
aa35fc01 325//____________________________________________________________________________
91daaf24 326void AliPHOSGeometry::ImpactOnEmc(Double_t * vtx, Double_t theta, Double_t phi,
327 Int_t & moduleNumber, Double_t & z, Double_t & x) const
aa35fc01 328{
329 // calculates the impact coordinates on PHOS of a neutral particle
91daaf24 330 // emitted in the vertex vtx[3] with direction theta and phi in the ALICE global coordinate system
331 TVector3 p(TMath::Sin(theta)*TMath::Cos(phi),TMath::Sin(theta)*TMath::Sin(phi),TMath::Cos(theta)) ;
022ee411 332 TVector3 v(vtx[0],vtx[1],vtx[2]) ;
aa35fc01 333
91daaf24 334 if (!gGeoManager){
335 AliFatal("Geo manager not initialized\n");
336 }
337
338 for(Int_t imod=1; imod<=GetNModules() ; imod++){
339 //create vector from (0,0,0) to center of crystal surface of imod module
8e20650f 340 Double_t tmp[3]={0.,-fCrystalShift,0.} ;
91daaf24 341
342 char path[100] ;
343 sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",imod) ;
344 if (!gGeoManager->cd(path)){
345 AliFatal("Geo manager can not find path \n");
346 }
347 TGeoHMatrix *m = gGeoManager->GetCurrentMatrix();
348 Double_t posG[3]={0.,0.,0.} ;
349 if (m) m->LocalToMaster(tmp,posG);
350 TVector3 n(posG[0],posG[1],-posG[2]) ;
351 Double_t direction=n.Dot(p) ;
352 if(direction<=0.)
353 continue ; //momentum directed FROM module
19c8ddd0 354 Double_t fr = (n.Mag2()-n.Dot(v))/direction ;
91daaf24 355 //Calculate direction in module plain
19c8ddd0 356 n-=v+fr*p ;
91daaf24 357 n*=-1. ;
358 Float_t * sz = fGeometryEMCA->GetInnerThermoHalfSize() ; //Wery close to the zise of the Xtl set
359 if(TMath::Abs(TMath::Abs(n.Z())<sz[2]) && n.Pt()<sz[0]){
360 moduleNumber = imod ;
361 z=n.Z() ;
362 x=TMath::Sign(n.Pt(),n.X()) ;
363 return ;
364 }
365 }
366 //Not in acceptance
367 x=0; z=0 ;
368 moduleNumber=0 ;
aa35fc01 369
aa35fc01 370}
371
372//____________________________________________________________________________
1c9d8212 373Bool_t AliPHOSGeometry::Impact(const TParticle * particle) const
374{
e957fea8 375 // Tells if a particle enters PHOS
376 Bool_t in=kFALSE;
377 Int_t moduleNumber=0;
91daaf24 378 Double_t vtx[3]={particle->Vx(),particle->Vy(),particle->Vz()} ;
1c9d8212 379 Double_t z,x;
91daaf24 380 ImpactOnEmc(vtx,particle->Theta(),particle->Phi(),moduleNumber,z,x);
381 if(moduleNumber!=0)
e957fea8 382 in=kTRUE;
e957fea8 383 return in;
1c9d8212 384}
385
d15a28e7 386//____________________________________________________________________________
fd6f5ab1 387Bool_t AliPHOSGeometry::RelToAbsNumbering(const Int_t * relid, Int_t & absId) const
d15a28e7 388{
b2a60966 389 // Converts the relative numbering into the absolute numbering
ed4205d8 390 // EMCA crystals:
fd6f5ab1 391 // absId = from 1 to fNModules * fNPhi * fNZ
ed4205d8 392 // CPV pad:
fd6f5ab1 393 // absId = from N(total PHOS crystals) + 1
ed4205d8 394 // to NCPVModules * fNumberOfCPVPadsPhi * fNumberOfCPVPadsZ
d15a28e7 395
396 Bool_t rv = kTRUE ;
710f859a 397
398 if ( relid[1] == 0 ) { // it is a Phos crystal
fd6f5ab1 399 absId =
710f859a 400 ( relid[0] - 1 ) * GetNPhi() * GetNZ() // the offset of PHOS modules
401 + ( relid[2] - 1 ) * GetNZ() // the offset along phi
402 + relid[3] ; // the offset along z
d15a28e7 403 }
710f859a 404 else { // it is a CPV pad
fd6f5ab1 405 absId = GetNPhi() * GetNZ() * GetNModules() // the offset to separate EMCA crystals from CPV pads
710f859a 406 + ( relid[0] - 1 ) * GetNumberOfCPVPadsPhi() * GetNumberOfCPVPadsZ() // the pads offset of PHOS modules
407 + ( relid[2] - 1 ) * GetNumberOfCPVPadsZ() // the pads offset of a CPV row
52a36ffd 408 + relid[3] ; // the column number
409 }
410
d15a28e7 411 return rv ;
412}
413
414//____________________________________________________________________________
fc7e2f43 415void AliPHOSGeometry::RelPosInAlice(Int_t id, TVector3 & pos ) const
d15a28e7 416{
a4e98857 417 // Converts the absolute numbering into the global ALICE coordinate system
b2a60966 418
91daaf24 419 if (!gGeoManager){
420 AliFatal("Geo manager not initialized\n");
421 }
ed4205d8 422
91daaf24 423 Int_t relid[4] ;
ed4205d8 424
91daaf24 425 AbsToRelNumbering(id , relid) ;
ed4205d8 426
91daaf24 427 //construct module name
428 char path[100] ;
429 if(relid[1]==0){ //this is EMC
430
8e20650f 431 Double_t ps[3]= {0.0,-fCryCellShift,0.}; //Position incide the crystal
91daaf24 432 Double_t psC[3]={0.0,0.0,0.}; //Global position
433
434 //Shift and possibly apply misalignment corrections
fd6f5ab1 435 Int_t nCellsXInStrip=fGeometryEMCA->GetNCellsXInStrip() ;
436 Int_t nCellsZInStrip=fGeometryEMCA->GetNCellsZInStrip() ;
437 Int_t strip=1+((Int_t) TMath::Ceil((Double_t)relid[2]/nCellsXInStrip))*fGeometryEMCA->GetNStripZ()-
438 (Int_t) TMath::Ceil((Double_t)relid[3]/nCellsZInStrip) ;
439 Int_t cellraw= relid[3]%nCellsZInStrip ;
440 if(cellraw==0)cellraw=nCellsZInStrip ;
441 Int_t cell= ((relid[2]-1)%nCellsXInStrip)*nCellsZInStrip + cellraw ;
91daaf24 442 sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1/PSTR_%d/PCEL_%d",
443 relid[0],strip,cell) ;
444 if (!gGeoManager->cd(path)){
445 AliFatal("Geo manager can not find path \n");
446 }
447 TGeoHMatrix *m = gGeoManager->GetCurrentMatrix();
448 if (m) m->LocalToMaster(ps,psC);
449 else{
450 AliFatal("Geo matrixes are not loaded \n") ;
451 }
fd6f5ab1 452 pos.SetXYZ(psC[0],psC[1],psC[2]) ;
91daaf24 453 }
454 else{
455 //first calculate position with respect to CPV plain
456 Int_t row = relid[2] ; //offset along x axis
457 Int_t column = relid[3] ; //offset along z axis
458 Double_t ps[3]= {0.0,GetCPVBoxSize(1)/2.,0.}; //Position on top of CPV
459 Double_t psC[3]={0.0,0.0,0.}; //Global position
460 pos[0] = - ( GetNumberOfCPVPadsPhi()/2. - row - 0.5 ) * GetPadSizePhi() ; // position of pad with respect
461 pos[2] = - ( GetNumberOfCPVPadsZ() /2. - column - 0.5 ) * GetPadSizeZ() ; // of center of PHOS module
462
463 //now apply possible shifts and rotations
464 sprintf(path,"/ALIC_1/PHOS_%d/PCPV_1",relid[0]) ;
465 if (!gGeoManager->cd(path)){
466 AliFatal("Geo manager can not find path \n");
467 }
468 TGeoHMatrix *m = gGeoManager->GetCurrentMatrix();
469 if (m) m->LocalToMaster(ps,psC);
470 else{
471 AliFatal("Geo matrixes are not loaded \n") ;
472 }
473 pos.SetXYZ(psC[0],psC[1],-psC[2]) ;
474 }
d15a28e7 475}
476
477//____________________________________________________________________________
fd6f5ab1 478void AliPHOSGeometry::RelPosToAbsId(Int_t module, Double_t x, Double_t z, Int_t & absId) const
842988a5 479{
480 // converts local PHOS-module (x, z) coordinates to absId
91daaf24 481
482 //find Global position
483 if (!gGeoManager){
484 AliFatal("Geo manager not initialized\n");
485 }
fd6f5ab1 486 Double_t posL[3]={x,-fCrystalShift,-z} ; //Only for EMC!!!
487 Double_t posG[3] ;
91daaf24 488 char path[100] ;
489 sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",module) ;
91daaf24 490 if (!gGeoManager->cd(path)){
fd6f5ab1 491 AliFatal("Geo manager can not find path \n");
492 }
493 TGeoHMatrix *mPHOS = gGeoManager->GetCurrentMatrix();
494 if (mPHOS){
495 mPHOS->LocalToMaster(posL,posG);
91daaf24 496 }
91daaf24 497 else{
498 AliFatal("Geo matrixes are not loaded \n") ;
499 }
fd6f5ab1 500
501 Int_t relid[4] ;
502 gGeoManager->FindNode(posG[0],posG[1],posG[2]) ;
91daaf24 503 //Check that path contains PSTR and extract strip number
504 TString cpath(gGeoManager->GetPath()) ;
505 Int_t indx = cpath.Index("PCEL") ;
506 if(indx==-1){ //for the few events when particle hits between srips use ideal geometry
507 relid[0] = module ;
508 relid[1] = 0 ;
509 relid[2] = static_cast<Int_t>(TMath::Ceil( x/ GetCellStep() + GetNPhi() / 2.) );
510 relid[3] = static_cast<Int_t>(TMath::Ceil(-z/ GetCellStep() + GetNZ() / 2.) ) ;
511 if(relid[2]<1)relid[2]=1 ;
512 if(relid[3]<1)relid[3]=1 ;
513 if(relid[2]>GetNPhi())relid[2]=GetNPhi() ;
514 if(relid[3]>GetNZ())relid[3]=GetNZ() ;
fd6f5ab1 515 RelToAbsNumbering(relid,absId) ;
91daaf24 516 }
517 else{
518 Int_t indx2 = cpath.Index("/",indx) ;
519 if(indx2==-1)
520 indx2=cpath.Length() ;
521 TString cell=cpath(indx+5,indx2-indx-5) ;
522 Int_t icell=cell.Atoi() ;
523 indx = cpath.Index("PSTR") ;
524 indx2 = cpath.Index("/",indx) ;
525 TString strip=cpath(indx+5,indx2-indx-5) ;
526 Int_t iStrip = strip.Atoi() ;
fd6f5ab1 527
528 Int_t row = fGeometryEMCA->GetNStripZ() - (iStrip - 1) % (fGeometryEMCA->GetNStripZ()) ;
529 Int_t col = (Int_t) TMath::Ceil((Double_t) iStrip/(fGeometryEMCA->GetNStripZ())) -1 ;
530
531 // Absid for 8x2-strips. Looks nice :)
532 absId = (module-1)*GetNCristalsInModule() +
533 row * 2 + (col*fGeometryEMCA->GetNCellsXInStrip() + (icell - 1) / 2)*GetNZ() - (icell & 1 ? 1 : 0);
534
91daaf24 535 }
536
842988a5 537}
538
539//____________________________________________________________________________
7b7c1533 540void AliPHOSGeometry::RelPosInModule(const Int_t * relid, Float_t & x, Float_t & z) const
d15a28e7 541{
b2a60966 542 // Converts the relative numbering into the local PHOS-module (x, z) coordinates
52a36ffd 543 // Note: sign of z differs from that in the previous version (Yu.Kharlov, 12 Oct 2000)
b2a60966 544
d15a28e7 545
91daaf24 546 if (!gGeoManager){
547 AliFatal("Geo manager not initialized\n");
548 }
549 //construct module name
550 char path[100] ;
551 if(relid[1]==0){ //this is PHOS
552
553// Calculations using ideal geometry (obsolete)
554// x = - ( GetNPhi()/2. - relid[2] + 0.5 ) * GetCellStep() ; // position of Xtal with respect
555// z = - ( GetNZ() /2. - relid[3] + 0.5 ) * GetCellStep() ; // of center of PHOS module
556
fd6f5ab1 557 Double_t pos[3]= {0.0,-fCryCellShift,0.}; //Position incide the crystal
91daaf24 558 Double_t posC[3]={0.0,0.0,0.}; //Global position
559
560 //Shift and possibly apply misalignment corrections
fd6f5ab1 561 Int_t nCellsXInStrip=fGeometryEMCA->GetNCellsXInStrip() ;
562 Int_t nCellsZInStrip=fGeometryEMCA->GetNCellsZInStrip() ;
563// Int_t strip=1+(relid[3]-1)/fGeometryEMCA->GetNCellsZInStrip()+((relid[2]-1)/nCellsInStrip)*fGeometryEMCA->GetNStripZ() ;
564 Int_t strip=1+((Int_t) TMath::Ceil((Double_t)relid[2]/nCellsXInStrip))*fGeometryEMCA->GetNStripZ()-
565 (Int_t) TMath::Ceil((Double_t)relid[3]/nCellsZInStrip) ;
566 Int_t cellraw= relid[3]%nCellsZInStrip ;
567 if(cellraw==0)cellraw=nCellsZInStrip ;
568 Int_t cell= ((relid[2]-1)%nCellsXInStrip)*nCellsZInStrip + cellraw ;
91daaf24 569 sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1/PSTR_%d/PCEL_%d",
570 relid[0],strip,cell) ;
571 if (!gGeoManager->cd(path)){
572 AliFatal("Geo manager can not find path \n");
573 }
574 TGeoHMatrix *m = gGeoManager->GetCurrentMatrix();
575 if (m) m->LocalToMaster(pos,posC);
576 else{
577 AliFatal("Geo matrixes are not loaded \n") ;
578 }
579 //Return to PHOS local system
580 Double_t posL[3]={posC[0],posC[1],posC[2]};
581 sprintf(path,"/ALIC_1/PHOS_%d",relid[0]) ;
582 if (!gGeoManager->cd(path)){
583 AliFatal("Geo manager can not find path \n");
584 }
585 TGeoHMatrix *mPHOS = gGeoManager->GetCurrentMatrix();
586 if (mPHOS) mPHOS->MasterToLocal(posC,posL);
587 else{
588 AliFatal("Geo matrixes are not loaded \n") ;
589 }
fd6f5ab1 590//printf("RelPosInMod: posL=[%f,%f,%f]\n",posL[0],posL[1],posL[2]) ;
91daaf24 591//printf("old: x=%f, z=%f \n",x,z);
592 x=posL[0] ;
fd6f5ab1 593 z=posL[1];
91daaf24 594 return ;
595 }
596 else{//CPV
597 //first calculate position with respect to CPV plain
598 Int_t row = relid[2] ; //offset along x axis
599 Int_t column = relid[3] ; //offset along z axis
600 Double_t pos[3]= {0.0,0.0,0.}; //Position incide the CPV printed circuit
601 Double_t posC[3]={0.0,0.0,0.}; //Global position
602 pos[0] = - ( GetNumberOfCPVPadsPhi()/2. - row - 0.5 ) * GetPadSizePhi() ; // position of pad with respect
603 pos[2] = - ( GetNumberOfCPVPadsZ() /2. - column - 0.5 ) * GetPadSizeZ() ; // of center of PHOS module
604
605 //now apply possible shifts and rotations
606 sprintf(path,"/ALIC_1/PHOS_%d/PCPV_1",relid[0]) ;
607 if (!gGeoManager->cd(path)){
608 AliFatal("Geo manager can not find path \n");
609 }
610 TGeoHMatrix *m = gGeoManager->GetCurrentMatrix();
611 if (m) m->LocalToMaster(pos,posC);
612 else{
613 AliFatal("Geo matrixes are not loaded \n") ;
614 }
615 //Return to PHOS local system
616 Double_t posL[3]={0.,0.,0.,} ;
617 sprintf(path,"/ALIC_1/PHOS_%d",relid[0]) ;
618 if (!gGeoManager->cd(path)){
619 AliFatal("Geo manager can not find path \n");
620 }
621 TGeoHMatrix *mPHOS = gGeoManager->GetCurrentMatrix();
622 if (mPHOS) mPHOS->MasterToLocal(posC,posL);
623 else{
624 AliFatal("Geo matrixes are not loaded \n") ;
625 }
626 x=posL[0] ;
627 z=posL[1];
628 return ;
629
52a36ffd 630 }
91daaf24 631
2f3366b6 632}
aa0b9641 633
634//____________________________________________________________________________
635
7b51037f 636void AliPHOSGeometry::GetModuleCenter(TVector3& center,
637 const char *det,
638 Int_t module) const
aa0b9641 639{
bfc17d18 640 // Returns a position of the center of the CPV or EMC module
91daaf24 641 // in ideal (not misaligned) geometry
1504ac47 642 Float_t rDet = 0.;
e77bb310 643 if (strcmp(det,"CPV") == 0) rDet = GetIPtoCPVDistance ();
644 else if (strcmp(det,"EMC") == 0) rDet = GetIPtoCrystalSurface();
351dd634 645 else
646 AliFatal(Form("Wrong detector name %s",det));
bfc17d18 647
395f4eea 648 Float_t angle = GetPHOSAngle(module); // (40,20,0,-20,-40) degrees
649 angle *= TMath::Pi()/180;
650 angle += 3*TMath::Pi()/2.;
7b51037f 651 center.SetXYZ(rDet*TMath::Cos(angle), rDet*TMath::Sin(angle), 0.);
aa0b9641 652}
653
654//____________________________________________________________________________
655
7b51037f 656void AliPHOSGeometry::Global2Local(TVector3& localPosition,
657 const TVector3& globalPosition,
658 Int_t module) const
aa0b9641 659{
bfc17d18 660 // Transforms a global position of the rec.point to the local coordinate system
91daaf24 661 //Return to PHOS local system
8e20650f 662 Double_t posG[3]={globalPosition.X(),globalPosition.Y(),globalPosition.Z()} ;
91daaf24 663 Double_t posL[3]={0.,0.,0.} ;
664 char path[100] ;
753b19cd 665 sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",module) ;
666// sprintf(path,"/ALIC_1/PHOS_%d",module) ;
91daaf24 667 if (!gGeoManager->cd(path)){
668 AliFatal("Geo manager can not find path \n");
669 }
670 TGeoHMatrix *mPHOS = gGeoManager->GetCurrentMatrix();
671 if (mPHOS) mPHOS->MasterToLocal(posG,posL);
672 else{
673 AliFatal("Geo matrixes are not loaded \n") ;
674 }
8e20650f 675 localPosition.SetXYZ(posL[0],posL[1]+fCrystalShift,-posL[2]) ;
91daaf24 676
677/*
395f4eea 678 Float_t angle = GetPHOSAngle(module); // (40,20,0,-20,-40) degrees
679 angle *= TMath::Pi()/180;
680 angle += 3*TMath::Pi()/2.;
7b51037f 681 localPosition = globalPosition;
682 localPosition.RotateZ(-angle);
91daaf24 683*/
684}
685//____________________________________________________________________________
686void AliPHOSGeometry::Local2Global(Int_t mod, Float_t x, Float_t z,
687 TVector3& globalPosition) const
688{
689 char path[100] ;
690 sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",mod) ;
8e20650f 691// sprintf(path,"/ALIC_1/PHOS_%d",mod) ;
91daaf24 692 if (!gGeoManager->cd(path)){
693 AliFatal("Geo manager can not find path \n");
694 }
8e20650f 695 Double_t posL[3]={x,-fCrystalShift,-z} ; //Only for EMC!!!
91daaf24 696 Double_t posG[3] ;
697 TGeoHMatrix *mPHOS = gGeoManager->GetCurrentMatrix();
8e20650f 698 if (mPHOS){
699 mPHOS->LocalToMaster(posL,posG);
700 }
91daaf24 701 else{
702 AliFatal("Geo matrixes are not loaded \n") ;
703 }
8e20650f 704 globalPosition.SetXYZ(posG[0],posG[1],posG[2]) ;
91daaf24 705}
706//____________________________________________________________________________
407d15b3 707void AliPHOSGeometry::GetIncidentVector(const TVector3 &vtx, Int_t module, Float_t x,Float_t z, TVector3 &vInc) const {
91daaf24 708 //Calculates vector pointing from vertex to current poisition in module local frame
022ee411 709 //Note that PHOS local system and ALICE global have opposite z directions
91daaf24 710
753b19cd 711 Global2Local(vInc,vtx,module) ;
8e20650f 712 vInc.SetXYZ(vInc.X()+x,vInc.Y(),vInc.Z()+z) ;
aa0b9641 713}