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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> |
268f57b1 | 35 | #include <TGeoMatrix.h> |
d15a28e7 | 36 | |
37 | // --- Standard library --- | |
38 | ||
d15a28e7 | 39 | // --- AliRoot header files --- |
351dd634 | 40 | #include "AliLog.h" |
d15a28e7 | 41 | #include "AliPHOSGeometry.h" |
468794ea | 42 | #include "AliPHOSEMCAGeometry.h" |
710f859a | 43 | #include "AliPHOSRecPoint.h" |
d15a28e7 | 44 | |
925e6570 | 45 | ClassImp(AliPHOSGeometry) |
d15a28e7 | 46 | |
a4e98857 | 47 | // these initialisations are needed for a singleton |
05d33a3d | 48 | AliPHOSGeometry * AliPHOSGeometry::fgGeom = 0 ; |
49 | Bool_t AliPHOSGeometry::fgInit = kFALSE ; | |
9ec91567 | 50 | |
e957fea8 | 51 | //____________________________________________________________________________ |
3663622c | 52 | AliPHOSGeometry::AliPHOSGeometry() : |
53 | fNModules(0), | |
54 | fAngle(0.f), | |
55 | fPHOSAngle(0), | |
56 | fIPtoUpperCPVsurface(0), | |
308fb942 | 57 | fCrystalShift(0), |
58 | fCryCellShift(0), | |
3663622c | 59 | fRotMatrixArray(0), |
60 | fGeometryEMCA(0), | |
61 | fGeometryCPV(0), | |
62 | fGeometrySUPP(0) | |
63 | { | |
e957fea8 | 64 | // default ctor |
65 | // must be kept public for root persistency purposes, but should never be called by the outside world | |
e957fea8 | 66 | fgGeom = 0 ; |
e957fea8 | 67 | } |
68 | ||
3663622c | 69 | //____________________________________________________________________________ |
70 | AliPHOSGeometry::AliPHOSGeometry(const AliPHOSGeometry & rhs) | |
71 | : AliGeometry(rhs), | |
72 | fNModules(rhs.fNModules), | |
73 | fAngle(rhs.fAngle), | |
74 | fPHOSAngle(0), | |
75 | fIPtoUpperCPVsurface(rhs.fIPtoUpperCPVsurface), | |
308fb942 | 76 | fCrystalShift(rhs.fCrystalShift), |
77 | fCryCellShift(rhs.fCryCellShift), | |
3663622c | 78 | fRotMatrixArray(0), |
79 | fGeometryEMCA(0), | |
80 | fGeometryCPV(0), | |
81 | fGeometrySUPP(0) | |
82 | { | |
83 | Fatal("cpy ctor", "not implemented") ; | |
84 | } | |
85 | ||
91daaf24 | 86 | //____________________________________________________________________________ |
3663622c | 87 | AliPHOSGeometry::AliPHOSGeometry(const Text_t* name, const Text_t* title) |
88 | : AliGeometry(name, title), | |
89 | fNModules(0), | |
90 | fAngle(0.f), | |
91 | fPHOSAngle(0), | |
92 | fIPtoUpperCPVsurface(0), | |
308fb942 | 93 | fCrystalShift(0), |
94 | fCryCellShift(0), | |
3663622c | 95 | fRotMatrixArray(0), |
96 | fGeometryEMCA(0), | |
97 | fGeometryCPV(0), | |
98 | fGeometrySUPP(0) | |
99 | { | |
100 | // ctor only for internal usage (singleton) | |
101 | Init() ; | |
9a2cdbdf | 102 | fgGeom = this; |
3663622c | 103 | } |
104 | ||
d15a28e7 | 105 | //____________________________________________________________________________ |
106 | AliPHOSGeometry::~AliPHOSGeometry(void) | |
107 | { | |
b2a60966 | 108 | // dtor |
109 | ||
52a36ffd | 110 | if (fRotMatrixArray) fRotMatrixArray->Delete() ; |
111 | if (fRotMatrixArray) delete fRotMatrixArray ; | |
fa0bc588 | 112 | if (fPHOSAngle ) delete[] fPHOSAngle ; |
52a36ffd | 113 | } |
52a36ffd | 114 | |
91daaf24 | 115 | //____________________________________________________________________________ |
52a36ffd | 116 | void AliPHOSGeometry::Init(void) |
117 | { | |
a4e98857 | 118 | // Initializes the PHOS parameters : |
119 | // IHEP is the Protvino CPV (cathode pad chambers) | |
710f859a | 120 | |
809cd394 | 121 | TString test(GetName()) ; |
9d1b528b | 122 | if (test != "IHEP" && test != "noCPV") { |
351dd634 | 123 | AliFatal(Form("%s is not a known geometry (choose among IHEP)", |
124 | test.Data() )) ; | |
809cd394 | 125 | } |
126 | ||
710f859a | 127 | fgInit = kTRUE ; |
05d33a3d | 128 | |
85698486 | 129 | fNModules = 5; |
130 | fAngle = 20; | |
05d33a3d | 131 | |
710f859a | 132 | fGeometryEMCA = new AliPHOSEMCAGeometry(); |
133 | ||
134 | fGeometryCPV = new AliPHOSCPVGeometry (); | |
135 | ||
136 | fGeometrySUPP = new AliPHOSSupportGeometry(); | |
137 | ||
138 | fPHOSAngle = new Float_t[fNModules] ; | |
139 | ||
140 | Float_t * emcParams = fGeometryEMCA->GetEMCParams() ; | |
141 | ||
581e32d4 | 142 | fPHOSParams[0] = TMath::Max((Double_t)fGeometryCPV->GetCPVBoxSize(0)/2., |
a83b6179 | 143 | (Double_t)(emcParams[0] - (emcParams[1]-emcParams[0])* |
144 | fGeometryCPV->GetCPVBoxSize(1)/2/emcParams[3])); | |
710f859a | 145 | fPHOSParams[1] = emcParams[1] ; |
581e32d4 | 146 | fPHOSParams[2] = TMath::Max((Double_t)emcParams[2], (Double_t)fGeometryCPV->GetCPVBoxSize(2)/2.); |
710f859a | 147 | fPHOSParams[3] = emcParams[3] + fGeometryCPV->GetCPVBoxSize(1)/2. ; |
148 | ||
149 | fIPtoUpperCPVsurface = fGeometryEMCA->GetIPtoOuterCoverDistance() - fGeometryCPV->GetCPVBoxSize(1) ; | |
8e20650f | 150 | |
151 | //calculate offset to crystal surface | |
152 | Float_t * inthermo = fGeometryEMCA->GetInnerThermoHalfSize() ; | |
153 | Float_t * strip = fGeometryEMCA->GetStripHalfSize() ; | |
154 | Float_t* splate = fGeometryEMCA->GetSupportPlateHalfSize(); | |
155 | Float_t * crystal = fGeometryEMCA->GetCrystalHalfSize() ; | |
156 | Float_t * pin = fGeometryEMCA->GetAPDHalfSize() ; | |
157 | Float_t * preamp = fGeometryEMCA->GetPreampHalfSize() ; | |
158 | fCrystalShift=-inthermo[1]+strip[1]+splate[1]+crystal[1]-fGeometryEMCA->GetAirGapLed()/2.+pin[1]+preamp[1] ; | |
159 | fCryCellShift=crystal[1]-(fGeometryEMCA->GetAirGapLed()-2*pin[1]-2*preamp[1])/2; | |
160 | ||
710f859a | 161 | Int_t index ; |
162 | for ( index = 0; index < fNModules; index++ ) | |
52a36ffd | 163 | fPHOSAngle[index] = 0.0 ; // Module position angles are set in CreateGeometry() |
710f859a | 164 | |
710f859a | 165 | fRotMatrixArray = new TObjArray(fNModules) ; |
05d33a3d | 166 | |
85698486 | 167 | // Geometry parameters are calculated |
168 | ||
169 | SetPHOSAngles(); | |
170 | Double_t const kRADDEG = 180.0 / TMath::Pi() ; | |
171 | Float_t r = GetIPtoOuterCoverDistance() + fPHOSParams[3] - GetCPVBoxSize(1) ; | |
172 | for (Int_t iModule=0; iModule<fNModules; iModule++) { | |
173 | fModuleCenter[iModule][0] = r * TMath::Sin(fPHOSAngle[iModule] / kRADDEG ); | |
174 | fModuleCenter[iModule][1] =-r * TMath::Cos(fPHOSAngle[iModule] / kRADDEG ); | |
175 | fModuleCenter[iModule][2] = 0.; | |
176 | ||
177 | fModuleAngle[iModule][0][0] = 90; | |
178 | fModuleAngle[iModule][0][1] = fPHOSAngle[iModule]; | |
179 | fModuleAngle[iModule][1][0] = 0; | |
180 | fModuleAngle[iModule][1][1] = 0; | |
181 | fModuleAngle[iModule][2][0] = 90; | |
182 | fModuleAngle[iModule][2][1] = 270 + fPHOSAngle[iModule]; | |
05d33a3d | 183 | } |
184 | ||
52a36ffd | 185 | } |
186 | ||
187 | //____________________________________________________________________________ | |
188 | AliPHOSGeometry * AliPHOSGeometry::GetInstance() | |
189 | { | |
a4e98857 | 190 | // Returns the pointer of the unique instance; singleton specific |
191 | ||
809cd394 | 192 | return static_cast<AliPHOSGeometry *>( fgGeom ) ; |
52a36ffd | 193 | } |
194 | ||
195 | //____________________________________________________________________________ | |
196 | AliPHOSGeometry * AliPHOSGeometry::GetInstance(const Text_t* name, const Text_t* title) | |
197 | { | |
198 | // Returns the pointer of the unique instance | |
a4e98857 | 199 | // Creates it with the specified options (name, title) if it does not exist yet |
200 | ||
52a36ffd | 201 | AliPHOSGeometry * rv = 0 ; |
202 | if ( fgGeom == 0 ) { | |
203 | if ( strcmp(name,"") == 0 ) | |
204 | rv = 0 ; | |
205 | else { | |
206 | fgGeom = new AliPHOSGeometry(name, title) ; | |
207 | if ( fgInit ) | |
208 | rv = (AliPHOSGeometry * ) fgGeom ; | |
209 | else { | |
210 | rv = 0 ; | |
211 | delete fgGeom ; | |
212 | fgGeom = 0 ; | |
213 | } | |
214 | } | |
215 | } | |
216 | else { | |
21cd0c07 | 217 | if ( strcmp(fgGeom->GetName(), name) != 0 ) |
351dd634 | 218 | ::Error("GetInstance", "Current geometry is %s. You cannot call %s", |
219 | fgGeom->GetName(), name) ; | |
52a36ffd | 220 | else |
221 | rv = (AliPHOSGeometry *) fgGeom ; | |
222 | } | |
223 | return rv ; | |
224 | } | |
4697edca | 225 | |
52a36ffd | 226 | //____________________________________________________________________________ |
227 | void AliPHOSGeometry::SetPHOSAngles() | |
228 | { | |
a4e98857 | 229 | // Calculates the position of the PHOS modules in ALICE global coordinate system |
91daaf24 | 230 | // in ideal geometry |
52a36ffd | 231 | |
a8c47ab6 | 232 | Double_t const kRADDEG = 180.0 / TMath::Pi() ; |
710f859a | 233 | Float_t pphi = 2 * TMath::ATan( GetOuterBoxSize(0) / ( 2.0 * GetIPtoUpperCPVsurface() ) ) ; |
52a36ffd | 234 | pphi *= kRADDEG ; |
710f859a | 235 | if (pphi > fAngle){ |
351dd634 | 236 | AliError(Form("PHOS modules overlap!\n pphi = %f fAngle = %f", |
237 | pphi, fAngle)); | |
710f859a | 238 | |
239 | } | |
ed4205d8 | 240 | pphi = fAngle; |
52a36ffd | 241 | |
242 | for( Int_t i = 1; i <= fNModules ; i++ ) { | |
ed4205d8 | 243 | Float_t angle = pphi * ( i - fNModules / 2.0 - 0.5 ) ; |
52a36ffd | 244 | fPHOSAngle[i-1] = - angle ; |
245 | } | |
d15a28e7 | 246 | } |
247 | ||
248 | //____________________________________________________________________________ | |
fd6f5ab1 | 249 | Bool_t AliPHOSGeometry::AbsToRelNumbering(Int_t absId, Int_t * relid) const |
d15a28e7 | 250 | { |
91daaf24 | 251 | // Converts the absolute numbering into the following array |
b2a60966 | 252 | // relid[0] = PHOS Module number 1:fNModules |
253 | // relid[1] = 0 if PbW04 | |
710f859a | 254 | // = -1 if CPV |
255 | // relid[2] = Row number inside a PHOS module | |
256 | // relid[3] = Column number inside a PHOS module | |
d15a28e7 | 257 | |
258 | Bool_t rv = kTRUE ; | |
fd6f5ab1 | 259 | Float_t id = absId ; |
d15a28e7 | 260 | |
710f859a | 261 | Int_t phosmodulenumber = (Int_t)TMath:: Ceil( id / GetNCristalsInModule() ) ; |
d15a28e7 | 262 | |
710f859a | 263 | if ( phosmodulenumber > GetNModules() ) { // it is a CPV pad |
264 | ||
265 | id -= GetNPhi() * GetNZ() * GetNModules() ; | |
266 | Float_t nCPV = GetNumberOfCPVPadsPhi() * GetNumberOfCPVPadsZ() ; | |
267 | relid[0] = (Int_t) TMath::Ceil( id / nCPV ) ; | |
268 | relid[1] = -1 ; | |
269 | id -= ( relid[0] - 1 ) * nCPV ; | |
270 | relid[2] = (Int_t) TMath::Ceil( id / GetNumberOfCPVPadsZ() ) ; | |
271 | relid[3] = (Int_t) ( id - ( relid[2] - 1 ) * GetNumberOfCPVPadsZ() ) ; | |
d15a28e7 | 272 | } |
710f859a | 273 | else { // it is a PW04 crystal |
d15a28e7 | 274 | |
92862013 | 275 | relid[0] = phosmodulenumber ; |
276 | relid[1] = 0 ; | |
277 | id -= ( phosmodulenumber - 1 ) * GetNPhi() * GetNZ() ; | |
710f859a | 278 | relid[2] = (Int_t)TMath::Ceil( id / GetNZ() ) ; |
279 | relid[3] = (Int_t)( id - ( relid[2] - 1 ) * GetNZ() ) ; | |
d15a28e7 | 280 | } |
281 | return rv ; | |
282 | } | |
9f616d61 | 283 | //____________________________________________________________________________ |
308fb942 | 284 | void AliPHOSGeometry::GetGlobal(const AliRecPoint* , TVector3 & ) const |
9ee9f78d | 285 | { |
286 | AliFatal(Form("Please use GetGlobalPHOS(recPoint,gpos) instead of GetGlobal!")); | |
287 | } | |
288 | ||
289 | //____________________________________________________________________________ | |
290 | void AliPHOSGeometry::GetGlobalPHOS(const AliPHOSRecPoint* recPoint, TVector3 & gpos) const | |
d15a28e7 | 291 | { |
a4e98857 | 292 | // Calculates the coordinates of a RecPoint and the error matrix in the ALICE global coordinate system |
b2a60966 | 293 | |
9ee9f78d | 294 | const AliPHOSRecPoint * tmpPHOS = recPoint ; |
92862013 | 295 | TVector3 localposition ; |
d15a28e7 | 296 | |
297 | tmpPHOS->GetLocalPosition(gpos) ; | |
298 | ||
91daaf24 | 299 | if (!gGeoManager){ |
300 | AliFatal("Geo manager not initialized\n"); | |
d15a28e7 | 301 | } |
91daaf24 | 302 | //construct module name |
303 | char path[100] ; | |
304 | Double_t dy ; | |
305 | if(tmpPHOS->IsEmc()){ | |
306 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",tmpPHOS->GetPHOSMod()) ; | |
8e20650f | 307 | // sprintf(path,"/ALIC_1/PHOS_%d",tmpPHOS->GetPHOSMod()) ; |
308 | dy=fCrystalShift ; | |
d15a28e7 | 309 | } |
91daaf24 | 310 | else{ |
311 | sprintf(path,"/ALIC_1/PHOS_%d/PCPV_1",tmpPHOS->GetPHOSMod()) ; | |
312 | dy= GetCPVBoxSize(1)/2. ; //center of CPV module | |
313 | } | |
314 | Double_t pos[3]={gpos.X(),gpos.Y()-dy,gpos.Z()} ; | |
8e20650f | 315 | if(tmpPHOS->IsEmc()) |
316 | pos[2]=-pos[2] ; //Opposite z directions in EMC matrix and local frame!!! | |
91daaf24 | 317 | Double_t posC[3]; |
318 | //now apply possible shifts and rotations | |
319 | if (!gGeoManager->cd(path)){ | |
320 | AliFatal("Geo manager can not find path \n"); | |
321 | } | |
322 | TGeoHMatrix *m = gGeoManager->GetCurrentMatrix(); | |
8e20650f | 323 | if (m){ |
324 | m->LocalToMaster(pos,posC); | |
325 | } | |
91daaf24 | 326 | else{ |
327 | AliFatal("Geo matrixes are not loaded \n") ; | |
328 | } | |
8e20650f | 329 | gpos.SetXYZ(posC[0],posC[1],posC[2]) ; |
7b51037f | 330 | |
aa35fc01 | 331 | } |
aa35fc01 | 332 | //____________________________________________________________________________ |
91daaf24 | 333 | void AliPHOSGeometry::ImpactOnEmc(Double_t * vtx, Double_t theta, Double_t phi, |
334 | Int_t & moduleNumber, Double_t & z, Double_t & x) const | |
aa35fc01 | 335 | { |
336 | // calculates the impact coordinates on PHOS of a neutral particle | |
91daaf24 | 337 | // emitted in the vertex vtx[3] with direction theta and phi in the ALICE global coordinate system |
338 | TVector3 p(TMath::Sin(theta)*TMath::Cos(phi),TMath::Sin(theta)*TMath::Sin(phi),TMath::Cos(theta)) ; | |
022ee411 | 339 | TVector3 v(vtx[0],vtx[1],vtx[2]) ; |
aa35fc01 | 340 | |
91daaf24 | 341 | if (!gGeoManager){ |
342 | AliFatal("Geo manager not initialized\n"); | |
343 | } | |
344 | ||
345 | for(Int_t imod=1; imod<=GetNModules() ; imod++){ | |
346 | //create vector from (0,0,0) to center of crystal surface of imod module | |
8e20650f | 347 | Double_t tmp[3]={0.,-fCrystalShift,0.} ; |
91daaf24 | 348 | |
349 | char path[100] ; | |
350 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",imod) ; | |
351 | if (!gGeoManager->cd(path)){ | |
352 | AliFatal("Geo manager can not find path \n"); | |
353 | } | |
354 | TGeoHMatrix *m = gGeoManager->GetCurrentMatrix(); | |
355 | Double_t posG[3]={0.,0.,0.} ; | |
356 | if (m) m->LocalToMaster(tmp,posG); | |
3738cc2d | 357 | TVector3 n(posG[0],posG[1],posG[2]) ; |
91daaf24 | 358 | Double_t direction=n.Dot(p) ; |
359 | if(direction<=0.) | |
360 | continue ; //momentum directed FROM module | |
19c8ddd0 | 361 | Double_t fr = (n.Mag2()-n.Dot(v))/direction ; |
91daaf24 | 362 | //Calculate direction in module plain |
19c8ddd0 | 363 | n-=v+fr*p ; |
91daaf24 | 364 | n*=-1. ; |
365 | Float_t * sz = fGeometryEMCA->GetInnerThermoHalfSize() ; //Wery close to the zise of the Xtl set | |
366 | if(TMath::Abs(TMath::Abs(n.Z())<sz[2]) && n.Pt()<sz[0]){ | |
367 | moduleNumber = imod ; | |
368 | z=n.Z() ; | |
369 | x=TMath::Sign(n.Pt(),n.X()) ; | |
3738cc2d | 370 | //no need to return to local system since we calcilated distance from module center |
371 | //and tilts can not be significant. | |
91daaf24 | 372 | return ; |
373 | } | |
374 | } | |
375 | //Not in acceptance | |
376 | x=0; z=0 ; | |
377 | moduleNumber=0 ; | |
aa35fc01 | 378 | |
aa35fc01 | 379 | } |
380 | ||
e957fea8 | 381 | //____________________________________________________________________________ |
1c9d8212 | 382 | Bool_t AliPHOSGeometry::Impact(const TParticle * particle) const |
383 | { | |
e957fea8 | 384 | // Tells if a particle enters PHOS |
385 | Bool_t in=kFALSE; | |
386 | Int_t moduleNumber=0; | |
91daaf24 | 387 | Double_t vtx[3]={particle->Vx(),particle->Vy(),particle->Vz()} ; |
1c9d8212 | 388 | Double_t z,x; |
91daaf24 | 389 | ImpactOnEmc(vtx,particle->Theta(),particle->Phi(),moduleNumber,z,x); |
390 | if(moduleNumber!=0) | |
e957fea8 | 391 | in=kTRUE; |
e957fea8 | 392 | return in; |
1c9d8212 | 393 | } |
394 | ||
d15a28e7 | 395 | //____________________________________________________________________________ |
fd6f5ab1 | 396 | Bool_t AliPHOSGeometry::RelToAbsNumbering(const Int_t * relid, Int_t & absId) const |
d15a28e7 | 397 | { |
b2a60966 | 398 | // Converts the relative numbering into the absolute numbering |
ed4205d8 | 399 | // EMCA crystals: |
fd6f5ab1 | 400 | // absId = from 1 to fNModules * fNPhi * fNZ |
ed4205d8 | 401 | // CPV pad: |
fd6f5ab1 | 402 | // absId = from N(total PHOS crystals) + 1 |
ed4205d8 | 403 | // to NCPVModules * fNumberOfCPVPadsPhi * fNumberOfCPVPadsZ |
d15a28e7 | 404 | |
405 | Bool_t rv = kTRUE ; | |
710f859a | 406 | |
407 | if ( relid[1] == 0 ) { // it is a Phos crystal | |
fd6f5ab1 | 408 | absId = |
710f859a | 409 | ( relid[0] - 1 ) * GetNPhi() * GetNZ() // the offset of PHOS modules |
410 | + ( relid[2] - 1 ) * GetNZ() // the offset along phi | |
411 | + relid[3] ; // the offset along z | |
d15a28e7 | 412 | } |
710f859a | 413 | else { // it is a CPV pad |
fd6f5ab1 | 414 | absId = GetNPhi() * GetNZ() * GetNModules() // the offset to separate EMCA crystals from CPV pads |
710f859a | 415 | + ( relid[0] - 1 ) * GetNumberOfCPVPadsPhi() * GetNumberOfCPVPadsZ() // the pads offset of PHOS modules |
416 | + ( relid[2] - 1 ) * GetNumberOfCPVPadsZ() // the pads offset of a CPV row | |
52a36ffd | 417 | + relid[3] ; // the column number |
418 | } | |
419 | ||
d15a28e7 | 420 | return rv ; |
421 | } | |
422 | ||
423 | //____________________________________________________________________________ | |
fc7e2f43 | 424 | void AliPHOSGeometry::RelPosInAlice(Int_t id, TVector3 & pos ) const |
d15a28e7 | 425 | { |
a4e98857 | 426 | // Converts the absolute numbering into the global ALICE coordinate system |
b2a60966 | 427 | |
91daaf24 | 428 | if (!gGeoManager){ |
429 | AliFatal("Geo manager not initialized\n"); | |
430 | } | |
ed4205d8 | 431 | |
91daaf24 | 432 | Int_t relid[4] ; |
ed4205d8 | 433 | |
91daaf24 | 434 | AbsToRelNumbering(id , relid) ; |
ed4205d8 | 435 | |
91daaf24 | 436 | //construct module name |
437 | char path[100] ; | |
438 | if(relid[1]==0){ //this is EMC | |
439 | ||
8e20650f | 440 | Double_t ps[3]= {0.0,-fCryCellShift,0.}; //Position incide the crystal |
91daaf24 | 441 | Double_t psC[3]={0.0,0.0,0.}; //Global position |
442 | ||
443 | //Shift and possibly apply misalignment corrections | |
fd6f5ab1 | 444 | Int_t nCellsXInStrip=fGeometryEMCA->GetNCellsXInStrip() ; |
445 | Int_t nCellsZInStrip=fGeometryEMCA->GetNCellsZInStrip() ; | |
446 | Int_t strip=1+((Int_t) TMath::Ceil((Double_t)relid[2]/nCellsXInStrip))*fGeometryEMCA->GetNStripZ()- | |
447 | (Int_t) TMath::Ceil((Double_t)relid[3]/nCellsZInStrip) ; | |
448 | Int_t cellraw= relid[3]%nCellsZInStrip ; | |
449 | if(cellraw==0)cellraw=nCellsZInStrip ; | |
450 | Int_t cell= ((relid[2]-1)%nCellsXInStrip)*nCellsZInStrip + cellraw ; | |
91daaf24 | 451 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1/PSTR_%d/PCEL_%d", |
452 | relid[0],strip,cell) ; | |
453 | if (!gGeoManager->cd(path)){ | |
454 | AliFatal("Geo manager can not find path \n"); | |
455 | } | |
456 | TGeoHMatrix *m = gGeoManager->GetCurrentMatrix(); | |
457 | if (m) m->LocalToMaster(ps,psC); | |
458 | else{ | |
459 | AliFatal("Geo matrixes are not loaded \n") ; | |
460 | } | |
fd6f5ab1 | 461 | pos.SetXYZ(psC[0],psC[1],psC[2]) ; |
91daaf24 | 462 | } |
463 | else{ | |
464 | //first calculate position with respect to CPV plain | |
465 | Int_t row = relid[2] ; //offset along x axis | |
466 | Int_t column = relid[3] ; //offset along z axis | |
467 | Double_t ps[3]= {0.0,GetCPVBoxSize(1)/2.,0.}; //Position on top of CPV | |
468 | Double_t psC[3]={0.0,0.0,0.}; //Global position | |
469 | pos[0] = - ( GetNumberOfCPVPadsPhi()/2. - row - 0.5 ) * GetPadSizePhi() ; // position of pad with respect | |
470 | pos[2] = - ( GetNumberOfCPVPadsZ() /2. - column - 0.5 ) * GetPadSizeZ() ; // of center of PHOS module | |
471 | ||
472 | //now apply possible shifts and rotations | |
473 | sprintf(path,"/ALIC_1/PHOS_%d/PCPV_1",relid[0]) ; | |
474 | if (!gGeoManager->cd(path)){ | |
475 | AliFatal("Geo manager can not find path \n"); | |
476 | } | |
477 | TGeoHMatrix *m = gGeoManager->GetCurrentMatrix(); | |
478 | if (m) m->LocalToMaster(ps,psC); | |
479 | else{ | |
480 | AliFatal("Geo matrixes are not loaded \n") ; | |
481 | } | |
482 | pos.SetXYZ(psC[0],psC[1],-psC[2]) ; | |
483 | } | |
d15a28e7 | 484 | } |
485 | ||
486 | //____________________________________________________________________________ | |
fd6f5ab1 | 487 | void AliPHOSGeometry::RelPosToAbsId(Int_t module, Double_t x, Double_t z, Int_t & absId) const |
842988a5 | 488 | { |
489 | // converts local PHOS-module (x, z) coordinates to absId | |
91daaf24 | 490 | |
491 | //find Global position | |
492 | if (!gGeoManager){ | |
493 | AliFatal("Geo manager not initialized\n"); | |
494 | } | |
fd6f5ab1 | 495 | Double_t posL[3]={x,-fCrystalShift,-z} ; //Only for EMC!!! |
496 | Double_t posG[3] ; | |
91daaf24 | 497 | char path[100] ; |
498 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",module) ; | |
91daaf24 | 499 | if (!gGeoManager->cd(path)){ |
fd6f5ab1 | 500 | AliFatal("Geo manager can not find path \n"); |
501 | } | |
502 | TGeoHMatrix *mPHOS = gGeoManager->GetCurrentMatrix(); | |
503 | if (mPHOS){ | |
504 | mPHOS->LocalToMaster(posL,posG); | |
91daaf24 | 505 | } |
91daaf24 | 506 | else{ |
507 | AliFatal("Geo matrixes are not loaded \n") ; | |
508 | } | |
fd6f5ab1 | 509 | |
510 | Int_t relid[4] ; | |
511 | gGeoManager->FindNode(posG[0],posG[1],posG[2]) ; | |
91daaf24 | 512 | //Check that path contains PSTR and extract strip number |
513 | TString cpath(gGeoManager->GetPath()) ; | |
514 | Int_t indx = cpath.Index("PCEL") ; | |
515 | if(indx==-1){ //for the few events when particle hits between srips use ideal geometry | |
516 | relid[0] = module ; | |
517 | relid[1] = 0 ; | |
518 | relid[2] = static_cast<Int_t>(TMath::Ceil( x/ GetCellStep() + GetNPhi() / 2.) ); | |
519 | relid[3] = static_cast<Int_t>(TMath::Ceil(-z/ GetCellStep() + GetNZ() / 2.) ) ; | |
520 | if(relid[2]<1)relid[2]=1 ; | |
521 | if(relid[3]<1)relid[3]=1 ; | |
522 | if(relid[2]>GetNPhi())relid[2]=GetNPhi() ; | |
523 | if(relid[3]>GetNZ())relid[3]=GetNZ() ; | |
fd6f5ab1 | 524 | RelToAbsNumbering(relid,absId) ; |
91daaf24 | 525 | } |
526 | else{ | |
527 | Int_t indx2 = cpath.Index("/",indx) ; | |
528 | if(indx2==-1) | |
529 | indx2=cpath.Length() ; | |
530 | TString cell=cpath(indx+5,indx2-indx-5) ; | |
531 | Int_t icell=cell.Atoi() ; | |
532 | indx = cpath.Index("PSTR") ; | |
533 | indx2 = cpath.Index("/",indx) ; | |
534 | TString strip=cpath(indx+5,indx2-indx-5) ; | |
535 | Int_t iStrip = strip.Atoi() ; | |
fd6f5ab1 | 536 | |
537 | Int_t row = fGeometryEMCA->GetNStripZ() - (iStrip - 1) % (fGeometryEMCA->GetNStripZ()) ; | |
538 | Int_t col = (Int_t) TMath::Ceil((Double_t) iStrip/(fGeometryEMCA->GetNStripZ())) -1 ; | |
539 | ||
540 | // Absid for 8x2-strips. Looks nice :) | |
541 | absId = (module-1)*GetNCristalsInModule() + | |
542 | row * 2 + (col*fGeometryEMCA->GetNCellsXInStrip() + (icell - 1) / 2)*GetNZ() - (icell & 1 ? 1 : 0); | |
543 | ||
91daaf24 | 544 | } |
545 | ||
842988a5 | 546 | } |
547 | ||
548 | //____________________________________________________________________________ | |
7b7c1533 | 549 | void AliPHOSGeometry::RelPosInModule(const Int_t * relid, Float_t & x, Float_t & z) const |
d15a28e7 | 550 | { |
b2a60966 | 551 | // Converts the relative numbering into the local PHOS-module (x, z) coordinates |
52a36ffd | 552 | // Note: sign of z differs from that in the previous version (Yu.Kharlov, 12 Oct 2000) |
b2a60966 | 553 | |
d15a28e7 | 554 | |
91daaf24 | 555 | if (!gGeoManager){ |
556 | AliFatal("Geo manager not initialized\n"); | |
557 | } | |
558 | //construct module name | |
559 | char path[100] ; | |
560 | if(relid[1]==0){ //this is PHOS | |
561 | ||
562 | // Calculations using ideal geometry (obsolete) | |
563 | // x = - ( GetNPhi()/2. - relid[2] + 0.5 ) * GetCellStep() ; // position of Xtal with respect | |
564 | // z = - ( GetNZ() /2. - relid[3] + 0.5 ) * GetCellStep() ; // of center of PHOS module | |
565 | ||
fd6f5ab1 | 566 | Double_t pos[3]= {0.0,-fCryCellShift,0.}; //Position incide the crystal |
91daaf24 | 567 | Double_t posC[3]={0.0,0.0,0.}; //Global position |
568 | ||
569 | //Shift and possibly apply misalignment corrections | |
fd6f5ab1 | 570 | Int_t nCellsXInStrip=fGeometryEMCA->GetNCellsXInStrip() ; |
571 | Int_t nCellsZInStrip=fGeometryEMCA->GetNCellsZInStrip() ; | |
572 | // Int_t strip=1+(relid[3]-1)/fGeometryEMCA->GetNCellsZInStrip()+((relid[2]-1)/nCellsInStrip)*fGeometryEMCA->GetNStripZ() ; | |
573 | Int_t strip=1+((Int_t) TMath::Ceil((Double_t)relid[2]/nCellsXInStrip))*fGeometryEMCA->GetNStripZ()- | |
574 | (Int_t) TMath::Ceil((Double_t)relid[3]/nCellsZInStrip) ; | |
575 | Int_t cellraw= relid[3]%nCellsZInStrip ; | |
576 | if(cellraw==0)cellraw=nCellsZInStrip ; | |
577 | Int_t cell= ((relid[2]-1)%nCellsXInStrip)*nCellsZInStrip + cellraw ; | |
91daaf24 | 578 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1/PSTR_%d/PCEL_%d", |
579 | relid[0],strip,cell) ; | |
580 | if (!gGeoManager->cd(path)){ | |
581 | AliFatal("Geo manager can not find path \n"); | |
582 | } | |
583 | TGeoHMatrix *m = gGeoManager->GetCurrentMatrix(); | |
584 | if (m) m->LocalToMaster(pos,posC); | |
585 | else{ | |
586 | AliFatal("Geo matrixes are not loaded \n") ; | |
587 | } | |
3738cc2d | 588 | // printf("Local: x=%f, y=%f, z=%f \n",pos[0],pos[1],pos[2]) ; |
589 | // printf(" gl: x=%f, y=%f, z=%f \n",posC[0],posC[1],posC[2]) ; | |
91daaf24 | 590 | //Return to PHOS local system |
591 | Double_t posL[3]={posC[0],posC[1],posC[2]}; | |
3738cc2d | 592 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",relid[0]) ; |
593 | // sprintf(path,"/ALIC_1/PHOS_%d",relid[0]) ; | |
91daaf24 | 594 | if (!gGeoManager->cd(path)){ |
595 | AliFatal("Geo manager can not find path \n"); | |
596 | } | |
597 | TGeoHMatrix *mPHOS = gGeoManager->GetCurrentMatrix(); | |
598 | if (mPHOS) mPHOS->MasterToLocal(posC,posL); | |
599 | else{ | |
600 | AliFatal("Geo matrixes are not loaded \n") ; | |
601 | } | |
fd6f5ab1 | 602 | //printf("RelPosInMod: posL=[%f,%f,%f]\n",posL[0],posL[1],posL[2]) ; |
91daaf24 | 603 | //printf("old: x=%f, z=%f \n",x,z); |
604 | x=posL[0] ; | |
3738cc2d | 605 | z=-posL[2]; |
91daaf24 | 606 | return ; |
607 | } | |
608 | else{//CPV | |
609 | //first calculate position with respect to CPV plain | |
610 | Int_t row = relid[2] ; //offset along x axis | |
611 | Int_t column = relid[3] ; //offset along z axis | |
612 | Double_t pos[3]= {0.0,0.0,0.}; //Position incide the CPV printed circuit | |
613 | Double_t posC[3]={0.0,0.0,0.}; //Global position | |
3738cc2d | 614 | // x = - ( GetNumberOfCPVPadsPhi()/2. - row - 0.5 ) * GetPadSizePhi() ; // position of pad with respect |
615 | // z = - ( GetNumberOfCPVPadsZ() /2. - column - 0.5 ) * GetPadSizeZ() ; // of center of PHOS module | |
91daaf24 | 616 | pos[0] = - ( GetNumberOfCPVPadsPhi()/2. - row - 0.5 ) * GetPadSizePhi() ; // position of pad with respect |
617 | pos[2] = - ( GetNumberOfCPVPadsZ() /2. - column - 0.5 ) * GetPadSizeZ() ; // of center of PHOS module | |
3738cc2d | 618 | |
91daaf24 | 619 | //now apply possible shifts and rotations |
620 | sprintf(path,"/ALIC_1/PHOS_%d/PCPV_1",relid[0]) ; | |
621 | if (!gGeoManager->cd(path)){ | |
622 | AliFatal("Geo manager can not find path \n"); | |
623 | } | |
624 | TGeoHMatrix *m = gGeoManager->GetCurrentMatrix(); | |
625 | if (m) m->LocalToMaster(pos,posC); | |
626 | else{ | |
627 | AliFatal("Geo matrixes are not loaded \n") ; | |
628 | } | |
629 | //Return to PHOS local system | |
630 | Double_t posL[3]={0.,0.,0.,} ; | |
631 | sprintf(path,"/ALIC_1/PHOS_%d",relid[0]) ; | |
632 | if (!gGeoManager->cd(path)){ | |
633 | AliFatal("Geo manager can not find path \n"); | |
634 | } | |
635 | TGeoHMatrix *mPHOS = gGeoManager->GetCurrentMatrix(); | |
636 | if (mPHOS) mPHOS->MasterToLocal(posC,posL); | |
637 | else{ | |
638 | AliFatal("Geo matrixes are not loaded \n") ; | |
639 | } | |
640 | x=posL[0] ; | |
641 | z=posL[1]; | |
642 | return ; | |
643 | ||
52a36ffd | 644 | } |
91daaf24 | 645 | |
2f3366b6 | 646 | } |
aa0b9641 | 647 | |
648 | //____________________________________________________________________________ | |
649 | ||
7b51037f | 650 | void AliPHOSGeometry::GetModuleCenter(TVector3& center, |
651 | const char *det, | |
652 | Int_t module) const | |
aa0b9641 | 653 | { |
bfc17d18 | 654 | // Returns a position of the center of the CPV or EMC module |
91daaf24 | 655 | // in ideal (not misaligned) geometry |
1504ac47 | 656 | Float_t rDet = 0.; |
e77bb310 | 657 | if (strcmp(det,"CPV") == 0) rDet = GetIPtoCPVDistance (); |
658 | else if (strcmp(det,"EMC") == 0) rDet = GetIPtoCrystalSurface(); | |
351dd634 | 659 | else |
660 | AliFatal(Form("Wrong detector name %s",det)); | |
bfc17d18 | 661 | |
395f4eea | 662 | Float_t angle = GetPHOSAngle(module); // (40,20,0,-20,-40) degrees |
663 | angle *= TMath::Pi()/180; | |
664 | angle += 3*TMath::Pi()/2.; | |
7b51037f | 665 | center.SetXYZ(rDet*TMath::Cos(angle), rDet*TMath::Sin(angle), 0.); |
aa0b9641 | 666 | } |
667 | ||
668 | //____________________________________________________________________________ | |
669 | ||
7b51037f | 670 | void AliPHOSGeometry::Global2Local(TVector3& localPosition, |
671 | const TVector3& globalPosition, | |
672 | Int_t module) const | |
aa0b9641 | 673 | { |
bfc17d18 | 674 | // Transforms a global position of the rec.point to the local coordinate system |
91daaf24 | 675 | //Return to PHOS local system |
8e20650f | 676 | Double_t posG[3]={globalPosition.X(),globalPosition.Y(),globalPosition.Z()} ; |
91daaf24 | 677 | Double_t posL[3]={0.,0.,0.} ; |
678 | char path[100] ; | |
753b19cd | 679 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",module) ; |
680 | // sprintf(path,"/ALIC_1/PHOS_%d",module) ; | |
91daaf24 | 681 | if (!gGeoManager->cd(path)){ |
682 | AliFatal("Geo manager can not find path \n"); | |
683 | } | |
684 | TGeoHMatrix *mPHOS = gGeoManager->GetCurrentMatrix(); | |
685 | if (mPHOS) mPHOS->MasterToLocal(posG,posL); | |
686 | else{ | |
687 | AliFatal("Geo matrixes are not loaded \n") ; | |
688 | } | |
8e20650f | 689 | localPosition.SetXYZ(posL[0],posL[1]+fCrystalShift,-posL[2]) ; |
91daaf24 | 690 | |
691 | /* | |
395f4eea | 692 | Float_t angle = GetPHOSAngle(module); // (40,20,0,-20,-40) degrees |
693 | angle *= TMath::Pi()/180; | |
694 | angle += 3*TMath::Pi()/2.; | |
7b51037f | 695 | localPosition = globalPosition; |
696 | localPosition.RotateZ(-angle); | |
91daaf24 | 697 | */ |
698 | } | |
699 | //____________________________________________________________________________ | |
700 | void AliPHOSGeometry::Local2Global(Int_t mod, Float_t x, Float_t z, | |
701 | TVector3& globalPosition) const | |
702 | { | |
703 | char path[100] ; | |
704 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",mod) ; | |
8e20650f | 705 | // sprintf(path,"/ALIC_1/PHOS_%d",mod) ; |
91daaf24 | 706 | if (!gGeoManager->cd(path)){ |
707 | AliFatal("Geo manager can not find path \n"); | |
708 | } | |
8e20650f | 709 | Double_t posL[3]={x,-fCrystalShift,-z} ; //Only for EMC!!! |
91daaf24 | 710 | Double_t posG[3] ; |
711 | TGeoHMatrix *mPHOS = gGeoManager->GetCurrentMatrix(); | |
8e20650f | 712 | if (mPHOS){ |
713 | mPHOS->LocalToMaster(posL,posG); | |
714 | } | |
91daaf24 | 715 | else{ |
716 | AliFatal("Geo matrixes are not loaded \n") ; | |
717 | } | |
8e20650f | 718 | globalPosition.SetXYZ(posG[0],posG[1],posG[2]) ; |
91daaf24 | 719 | } |
720 | //____________________________________________________________________________ | |
407d15b3 | 721 | void AliPHOSGeometry::GetIncidentVector(const TVector3 &vtx, Int_t module, Float_t x,Float_t z, TVector3 &vInc) const { |
91daaf24 | 722 | //Calculates vector pointing from vertex to current poisition in module local frame |
022ee411 | 723 | //Note that PHOS local system and ALICE global have opposite z directions |
91daaf24 | 724 | |
753b19cd | 725 | Global2Local(vInc,vtx,module) ; |
8e20650f | 726 | vInc.SetXYZ(vInc.X()+x,vInc.Y(),vInc.Z()+z) ; |
aa0b9641 | 727 | } |