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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 | 44 | ClassImp(AliPHOSGeometry) |
d15a28e7 | 45 | |
a4e98857 | 46 | // these initialisations are needed for a singleton |
05d33a3d | 47 | AliPHOSGeometry * AliPHOSGeometry::fgGeom = 0 ; |
48 | Bool_t AliPHOSGeometry::fgInit = kFALSE ; | |
9ec91567 | 49 | |
e957fea8 | 50 | //____________________________________________________________________________ |
3663622c | 51 | AliPHOSGeometry::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 | ||
3663622c | 66 | //____________________________________________________________________________ |
67 | AliPHOSGeometry::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 | 82 | AliPHOSGeometry::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 | ||
d15a28e7 | 98 | //____________________________________________________________________________ |
99 | AliPHOSGeometry::~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 | 109 | void 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 | ||
180 | //____________________________________________________________________________ | |
181 | AliPHOSGeometry * 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 | //____________________________________________________________________________ | |
189 | AliPHOSGeometry * 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 | //____________________________________________________________________________ |
220 | void 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 | 242 | Bool_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 | 277 | void AliPHOSGeometry::GetGlobal(const AliRecPoint* recPoint, TVector3 & gpos) const |
9ee9f78d | 278 | { |
279 | AliFatal(Form("Please use GetGlobalPHOS(recPoint,gpos) instead of GetGlobal!")); | |
280 | } | |
281 | ||
282 | //____________________________________________________________________________ | |
283 | void AliPHOSGeometry::GetGlobalPHOS(const AliPHOSRecPoint* recPoint, TVector3 & gpos) const | |
d15a28e7 | 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 | 326 | void 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 | ||
e957fea8 | 372 | //____________________________________________________________________________ |
1c9d8212 | 373 | Bool_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 | 387 | Bool_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 | 415 | void 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 | 478 | void 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 | 540 | void 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 | 636 | void 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 | 656 | void 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 | //____________________________________________________________________________ | |
686 | void 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 | 707 | void 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 | } |