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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 | |
231dc984 | 121 | /* |
809cd394 | 122 | TString test(GetName()) ; |
9d1b528b | 123 | if (test != "IHEP" && test != "noCPV") { |
351dd634 | 124 | AliFatal(Form("%s is not a known geometry (choose among IHEP)", |
125 | test.Data() )) ; | |
809cd394 | 126 | } |
231dc984 | 127 | */ |
809cd394 | 128 | |
710f859a | 129 | fgInit = kTRUE ; |
05d33a3d | 130 | |
85698486 | 131 | fNModules = 5; |
132 | fAngle = 20; | |
05d33a3d | 133 | |
710f859a | 134 | fGeometryEMCA = new AliPHOSEMCAGeometry(); |
135 | ||
136 | fGeometryCPV = new AliPHOSCPVGeometry (); | |
137 | ||
138 | fGeometrySUPP = new AliPHOSSupportGeometry(); | |
139 | ||
140 | fPHOSAngle = new Float_t[fNModules] ; | |
141 | ||
142 | Float_t * emcParams = fGeometryEMCA->GetEMCParams() ; | |
143 | ||
581e32d4 | 144 | fPHOSParams[0] = TMath::Max((Double_t)fGeometryCPV->GetCPVBoxSize(0)/2., |
a83b6179 | 145 | (Double_t)(emcParams[0] - (emcParams[1]-emcParams[0])* |
146 | fGeometryCPV->GetCPVBoxSize(1)/2/emcParams[3])); | |
710f859a | 147 | fPHOSParams[1] = emcParams[1] ; |
581e32d4 | 148 | fPHOSParams[2] = TMath::Max((Double_t)emcParams[2], (Double_t)fGeometryCPV->GetCPVBoxSize(2)/2.); |
710f859a | 149 | fPHOSParams[3] = emcParams[3] + fGeometryCPV->GetCPVBoxSize(1)/2. ; |
150 | ||
151 | fIPtoUpperCPVsurface = fGeometryEMCA->GetIPtoOuterCoverDistance() - fGeometryCPV->GetCPVBoxSize(1) ; | |
8e20650f | 152 | |
153 | //calculate offset to crystal surface | |
154 | Float_t * inthermo = fGeometryEMCA->GetInnerThermoHalfSize() ; | |
155 | Float_t * strip = fGeometryEMCA->GetStripHalfSize() ; | |
156 | Float_t* splate = fGeometryEMCA->GetSupportPlateHalfSize(); | |
157 | Float_t * crystal = fGeometryEMCA->GetCrystalHalfSize() ; | |
158 | Float_t * pin = fGeometryEMCA->GetAPDHalfSize() ; | |
159 | Float_t * preamp = fGeometryEMCA->GetPreampHalfSize() ; | |
160 | fCrystalShift=-inthermo[1]+strip[1]+splate[1]+crystal[1]-fGeometryEMCA->GetAirGapLed()/2.+pin[1]+preamp[1] ; | |
161 | fCryCellShift=crystal[1]-(fGeometryEMCA->GetAirGapLed()-2*pin[1]-2*preamp[1])/2; | |
162 | ||
710f859a | 163 | Int_t index ; |
164 | for ( index = 0; index < fNModules; index++ ) | |
52a36ffd | 165 | fPHOSAngle[index] = 0.0 ; // Module position angles are set in CreateGeometry() |
710f859a | 166 | |
710f859a | 167 | fRotMatrixArray = new TObjArray(fNModules) ; |
05d33a3d | 168 | |
85698486 | 169 | // Geometry parameters are calculated |
170 | ||
171 | SetPHOSAngles(); | |
172 | Double_t const kRADDEG = 180.0 / TMath::Pi() ; | |
173 | Float_t r = GetIPtoOuterCoverDistance() + fPHOSParams[3] - GetCPVBoxSize(1) ; | |
174 | for (Int_t iModule=0; iModule<fNModules; iModule++) { | |
175 | fModuleCenter[iModule][0] = r * TMath::Sin(fPHOSAngle[iModule] / kRADDEG ); | |
176 | fModuleCenter[iModule][1] =-r * TMath::Cos(fPHOSAngle[iModule] / kRADDEG ); | |
177 | fModuleCenter[iModule][2] = 0.; | |
178 | ||
179 | fModuleAngle[iModule][0][0] = 90; | |
180 | fModuleAngle[iModule][0][1] = fPHOSAngle[iModule]; | |
181 | fModuleAngle[iModule][1][0] = 0; | |
182 | fModuleAngle[iModule][1][1] = 0; | |
183 | fModuleAngle[iModule][2][0] = 90; | |
184 | fModuleAngle[iModule][2][1] = 270 + fPHOSAngle[iModule]; | |
05d33a3d | 185 | } |
186 | ||
52a36ffd | 187 | } |
188 | ||
189 | //____________________________________________________________________________ | |
190 | AliPHOSGeometry * AliPHOSGeometry::GetInstance() | |
191 | { | |
a4e98857 | 192 | // Returns the pointer of the unique instance; singleton specific |
193 | ||
809cd394 | 194 | return static_cast<AliPHOSGeometry *>( fgGeom ) ; |
52a36ffd | 195 | } |
196 | ||
197 | //____________________________________________________________________________ | |
198 | AliPHOSGeometry * AliPHOSGeometry::GetInstance(const Text_t* name, const Text_t* title) | |
199 | { | |
200 | // Returns the pointer of the unique instance | |
a4e98857 | 201 | // Creates it with the specified options (name, title) if it does not exist yet |
202 | ||
52a36ffd | 203 | AliPHOSGeometry * rv = 0 ; |
204 | if ( fgGeom == 0 ) { | |
205 | if ( strcmp(name,"") == 0 ) | |
206 | rv = 0 ; | |
207 | else { | |
208 | fgGeom = new AliPHOSGeometry(name, title) ; | |
209 | if ( fgInit ) | |
210 | rv = (AliPHOSGeometry * ) fgGeom ; | |
211 | else { | |
212 | rv = 0 ; | |
213 | delete fgGeom ; | |
214 | fgGeom = 0 ; | |
215 | } | |
216 | } | |
217 | } | |
218 | else { | |
21cd0c07 | 219 | if ( strcmp(fgGeom->GetName(), name) != 0 ) |
351dd634 | 220 | ::Error("GetInstance", "Current geometry is %s. You cannot call %s", |
221 | fgGeom->GetName(), name) ; | |
52a36ffd | 222 | else |
223 | rv = (AliPHOSGeometry *) fgGeom ; | |
224 | } | |
225 | return rv ; | |
226 | } | |
4697edca | 227 | |
52a36ffd | 228 | //____________________________________________________________________________ |
229 | void AliPHOSGeometry::SetPHOSAngles() | |
230 | { | |
a4e98857 | 231 | // Calculates the position of the PHOS modules in ALICE global coordinate system |
91daaf24 | 232 | // in ideal geometry |
52a36ffd | 233 | |
a8c47ab6 | 234 | Double_t const kRADDEG = 180.0 / TMath::Pi() ; |
710f859a | 235 | Float_t pphi = 2 * TMath::ATan( GetOuterBoxSize(0) / ( 2.0 * GetIPtoUpperCPVsurface() ) ) ; |
52a36ffd | 236 | pphi *= kRADDEG ; |
710f859a | 237 | if (pphi > fAngle){ |
351dd634 | 238 | AliError(Form("PHOS modules overlap!\n pphi = %f fAngle = %f", |
239 | pphi, fAngle)); | |
710f859a | 240 | |
241 | } | |
ed4205d8 | 242 | pphi = fAngle; |
52a36ffd | 243 | |
244 | for( Int_t i = 1; i <= fNModules ; i++ ) { | |
ed4205d8 | 245 | Float_t angle = pphi * ( i - fNModules / 2.0 - 0.5 ) ; |
52a36ffd | 246 | fPHOSAngle[i-1] = - angle ; |
247 | } | |
d15a28e7 | 248 | } |
249 | ||
250 | //____________________________________________________________________________ | |
fd6f5ab1 | 251 | Bool_t AliPHOSGeometry::AbsToRelNumbering(Int_t absId, Int_t * relid) const |
d15a28e7 | 252 | { |
91daaf24 | 253 | // Converts the absolute numbering into the following array |
b2a60966 | 254 | // relid[0] = PHOS Module number 1:fNModules |
255 | // relid[1] = 0 if PbW04 | |
710f859a | 256 | // = -1 if CPV |
257 | // relid[2] = Row number inside a PHOS module | |
258 | // relid[3] = Column number inside a PHOS module | |
d15a28e7 | 259 | |
260 | Bool_t rv = kTRUE ; | |
fd6f5ab1 | 261 | Float_t id = absId ; |
d15a28e7 | 262 | |
710f859a | 263 | Int_t phosmodulenumber = (Int_t)TMath:: Ceil( id / GetNCristalsInModule() ) ; |
d15a28e7 | 264 | |
710f859a | 265 | if ( phosmodulenumber > GetNModules() ) { // it is a CPV pad |
266 | ||
267 | id -= GetNPhi() * GetNZ() * GetNModules() ; | |
268 | Float_t nCPV = GetNumberOfCPVPadsPhi() * GetNumberOfCPVPadsZ() ; | |
269 | relid[0] = (Int_t) TMath::Ceil( id / nCPV ) ; | |
270 | relid[1] = -1 ; | |
271 | id -= ( relid[0] - 1 ) * nCPV ; | |
272 | relid[2] = (Int_t) TMath::Ceil( id / GetNumberOfCPVPadsZ() ) ; | |
273 | relid[3] = (Int_t) ( id - ( relid[2] - 1 ) * GetNumberOfCPVPadsZ() ) ; | |
d15a28e7 | 274 | } |
710f859a | 275 | else { // it is a PW04 crystal |
d15a28e7 | 276 | |
92862013 | 277 | relid[0] = phosmodulenumber ; |
278 | relid[1] = 0 ; | |
279 | id -= ( phosmodulenumber - 1 ) * GetNPhi() * GetNZ() ; | |
710f859a | 280 | relid[2] = (Int_t)TMath::Ceil( id / GetNZ() ) ; |
281 | relid[3] = (Int_t)( id - ( relid[2] - 1 ) * GetNZ() ) ; | |
d15a28e7 | 282 | } |
283 | return rv ; | |
284 | } | |
9f616d61 | 285 | //____________________________________________________________________________ |
308fb942 | 286 | void AliPHOSGeometry::GetGlobal(const AliRecPoint* , TVector3 & ) const |
9ee9f78d | 287 | { |
288 | AliFatal(Form("Please use GetGlobalPHOS(recPoint,gpos) instead of GetGlobal!")); | |
289 | } | |
290 | ||
291 | //____________________________________________________________________________ | |
292 | void AliPHOSGeometry::GetGlobalPHOS(const AliPHOSRecPoint* recPoint, TVector3 & gpos) const | |
d15a28e7 | 293 | { |
a4e98857 | 294 | // Calculates the coordinates of a RecPoint and the error matrix in the ALICE global coordinate system |
b2a60966 | 295 | |
9ee9f78d | 296 | const AliPHOSRecPoint * tmpPHOS = recPoint ; |
92862013 | 297 | TVector3 localposition ; |
d15a28e7 | 298 | |
299 | tmpPHOS->GetLocalPosition(gpos) ; | |
300 | ||
91daaf24 | 301 | if (!gGeoManager){ |
302 | AliFatal("Geo manager not initialized\n"); | |
d15a28e7 | 303 | } |
91daaf24 | 304 | //construct module name |
305 | char path[100] ; | |
306 | Double_t dy ; | |
307 | if(tmpPHOS->IsEmc()){ | |
308 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",tmpPHOS->GetPHOSMod()) ; | |
8e20650f | 309 | // sprintf(path,"/ALIC_1/PHOS_%d",tmpPHOS->GetPHOSMod()) ; |
310 | dy=fCrystalShift ; | |
d15a28e7 | 311 | } |
91daaf24 | 312 | else{ |
313 | sprintf(path,"/ALIC_1/PHOS_%d/PCPV_1",tmpPHOS->GetPHOSMod()) ; | |
314 | dy= GetCPVBoxSize(1)/2. ; //center of CPV module | |
315 | } | |
316 | Double_t pos[3]={gpos.X(),gpos.Y()-dy,gpos.Z()} ; | |
8e20650f | 317 | if(tmpPHOS->IsEmc()) |
318 | pos[2]=-pos[2] ; //Opposite z directions in EMC matrix and local frame!!! | |
91daaf24 | 319 | Double_t posC[3]; |
320 | //now apply possible shifts and rotations | |
321 | if (!gGeoManager->cd(path)){ | |
322 | AliFatal("Geo manager can not find path \n"); | |
323 | } | |
324 | TGeoHMatrix *m = gGeoManager->GetCurrentMatrix(); | |
8e20650f | 325 | if (m){ |
326 | m->LocalToMaster(pos,posC); | |
327 | } | |
91daaf24 | 328 | else{ |
329 | AliFatal("Geo matrixes are not loaded \n") ; | |
330 | } | |
8e20650f | 331 | gpos.SetXYZ(posC[0],posC[1],posC[2]) ; |
7b51037f | 332 | |
aa35fc01 | 333 | } |
aa35fc01 | 334 | //____________________________________________________________________________ |
91daaf24 | 335 | void AliPHOSGeometry::ImpactOnEmc(Double_t * vtx, Double_t theta, Double_t phi, |
336 | Int_t & moduleNumber, Double_t & z, Double_t & x) const | |
aa35fc01 | 337 | { |
338 | // calculates the impact coordinates on PHOS of a neutral particle | |
91daaf24 | 339 | // emitted in the vertex vtx[3] with direction theta and phi in the ALICE global coordinate system |
340 | TVector3 p(TMath::Sin(theta)*TMath::Cos(phi),TMath::Sin(theta)*TMath::Sin(phi),TMath::Cos(theta)) ; | |
022ee411 | 341 | TVector3 v(vtx[0],vtx[1],vtx[2]) ; |
aa35fc01 | 342 | |
91daaf24 | 343 | if (!gGeoManager){ |
344 | AliFatal("Geo manager not initialized\n"); | |
345 | } | |
346 | ||
347 | for(Int_t imod=1; imod<=GetNModules() ; imod++){ | |
348 | //create vector from (0,0,0) to center of crystal surface of imod module | |
8e20650f | 349 | Double_t tmp[3]={0.,-fCrystalShift,0.} ; |
91daaf24 | 350 | |
351 | char path[100] ; | |
352 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",imod) ; | |
353 | if (!gGeoManager->cd(path)){ | |
354 | AliFatal("Geo manager can not find path \n"); | |
355 | } | |
356 | TGeoHMatrix *m = gGeoManager->GetCurrentMatrix(); | |
357 | Double_t posG[3]={0.,0.,0.} ; | |
358 | if (m) m->LocalToMaster(tmp,posG); | |
3738cc2d | 359 | TVector3 n(posG[0],posG[1],posG[2]) ; |
91daaf24 | 360 | Double_t direction=n.Dot(p) ; |
361 | if(direction<=0.) | |
362 | continue ; //momentum directed FROM module | |
19c8ddd0 | 363 | Double_t fr = (n.Mag2()-n.Dot(v))/direction ; |
91daaf24 | 364 | //Calculate direction in module plain |
19c8ddd0 | 365 | n-=v+fr*p ; |
91daaf24 | 366 | n*=-1. ; |
367 | Float_t * sz = fGeometryEMCA->GetInnerThermoHalfSize() ; //Wery close to the zise of the Xtl set | |
368 | if(TMath::Abs(TMath::Abs(n.Z())<sz[2]) && n.Pt()<sz[0]){ | |
369 | moduleNumber = imod ; | |
370 | z=n.Z() ; | |
371 | x=TMath::Sign(n.Pt(),n.X()) ; | |
3738cc2d | 372 | //no need to return to local system since we calcilated distance from module center |
373 | //and tilts can not be significant. | |
91daaf24 | 374 | return ; |
375 | } | |
376 | } | |
377 | //Not in acceptance | |
378 | x=0; z=0 ; | |
379 | moduleNumber=0 ; | |
aa35fc01 | 380 | |
aa35fc01 | 381 | } |
382 | ||
e957fea8 | 383 | //____________________________________________________________________________ |
1c9d8212 | 384 | Bool_t AliPHOSGeometry::Impact(const TParticle * particle) const |
385 | { | |
e957fea8 | 386 | // Tells if a particle enters PHOS |
387 | Bool_t in=kFALSE; | |
388 | Int_t moduleNumber=0; | |
91daaf24 | 389 | Double_t vtx[3]={particle->Vx(),particle->Vy(),particle->Vz()} ; |
1c9d8212 | 390 | Double_t z,x; |
91daaf24 | 391 | ImpactOnEmc(vtx,particle->Theta(),particle->Phi(),moduleNumber,z,x); |
392 | if(moduleNumber!=0) | |
e957fea8 | 393 | in=kTRUE; |
e957fea8 | 394 | return in; |
1c9d8212 | 395 | } |
396 | ||
d15a28e7 | 397 | //____________________________________________________________________________ |
fd6f5ab1 | 398 | Bool_t AliPHOSGeometry::RelToAbsNumbering(const Int_t * relid, Int_t & absId) const |
d15a28e7 | 399 | { |
b2a60966 | 400 | // Converts the relative numbering into the absolute numbering |
ed4205d8 | 401 | // EMCA crystals: |
fd6f5ab1 | 402 | // absId = from 1 to fNModules * fNPhi * fNZ |
ed4205d8 | 403 | // CPV pad: |
fd6f5ab1 | 404 | // absId = from N(total PHOS crystals) + 1 |
ed4205d8 | 405 | // to NCPVModules * fNumberOfCPVPadsPhi * fNumberOfCPVPadsZ |
d15a28e7 | 406 | |
407 | Bool_t rv = kTRUE ; | |
710f859a | 408 | |
409 | if ( relid[1] == 0 ) { // it is a Phos crystal | |
fd6f5ab1 | 410 | absId = |
710f859a | 411 | ( relid[0] - 1 ) * GetNPhi() * GetNZ() // the offset of PHOS modules |
412 | + ( relid[2] - 1 ) * GetNZ() // the offset along phi | |
413 | + relid[3] ; // the offset along z | |
d15a28e7 | 414 | } |
710f859a | 415 | else { // it is a CPV pad |
fd6f5ab1 | 416 | absId = GetNPhi() * GetNZ() * GetNModules() // the offset to separate EMCA crystals from CPV pads |
710f859a | 417 | + ( relid[0] - 1 ) * GetNumberOfCPVPadsPhi() * GetNumberOfCPVPadsZ() // the pads offset of PHOS modules |
418 | + ( relid[2] - 1 ) * GetNumberOfCPVPadsZ() // the pads offset of a CPV row | |
52a36ffd | 419 | + relid[3] ; // the column number |
420 | } | |
421 | ||
d15a28e7 | 422 | return rv ; |
423 | } | |
424 | ||
425 | //____________________________________________________________________________ | |
fc7e2f43 | 426 | void AliPHOSGeometry::RelPosInAlice(Int_t id, TVector3 & pos ) const |
d15a28e7 | 427 | { |
a4e98857 | 428 | // Converts the absolute numbering into the global ALICE coordinate system |
b2a60966 | 429 | |
91daaf24 | 430 | if (!gGeoManager){ |
431 | AliFatal("Geo manager not initialized\n"); | |
432 | } | |
ed4205d8 | 433 | |
91daaf24 | 434 | Int_t relid[4] ; |
ed4205d8 | 435 | |
91daaf24 | 436 | AbsToRelNumbering(id , relid) ; |
ed4205d8 | 437 | |
91daaf24 | 438 | //construct module name |
439 | char path[100] ; | |
440 | if(relid[1]==0){ //this is EMC | |
441 | ||
8e20650f | 442 | Double_t ps[3]= {0.0,-fCryCellShift,0.}; //Position incide the crystal |
91daaf24 | 443 | Double_t psC[3]={0.0,0.0,0.}; //Global position |
444 | ||
445 | //Shift and possibly apply misalignment corrections | |
fd6f5ab1 | 446 | Int_t nCellsXInStrip=fGeometryEMCA->GetNCellsXInStrip() ; |
447 | Int_t nCellsZInStrip=fGeometryEMCA->GetNCellsZInStrip() ; | |
448 | Int_t strip=1+((Int_t) TMath::Ceil((Double_t)relid[2]/nCellsXInStrip))*fGeometryEMCA->GetNStripZ()- | |
449 | (Int_t) TMath::Ceil((Double_t)relid[3]/nCellsZInStrip) ; | |
450 | Int_t cellraw= relid[3]%nCellsZInStrip ; | |
451 | if(cellraw==0)cellraw=nCellsZInStrip ; | |
452 | Int_t cell= ((relid[2]-1)%nCellsXInStrip)*nCellsZInStrip + cellraw ; | |
91daaf24 | 453 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1/PSTR_%d/PCEL_%d", |
454 | relid[0],strip,cell) ; | |
455 | if (!gGeoManager->cd(path)){ | |
456 | AliFatal("Geo manager can not find path \n"); | |
457 | } | |
458 | TGeoHMatrix *m = gGeoManager->GetCurrentMatrix(); | |
459 | if (m) m->LocalToMaster(ps,psC); | |
460 | else{ | |
461 | AliFatal("Geo matrixes are not loaded \n") ; | |
462 | } | |
fd6f5ab1 | 463 | pos.SetXYZ(psC[0],psC[1],psC[2]) ; |
91daaf24 | 464 | } |
465 | else{ | |
466 | //first calculate position with respect to CPV plain | |
467 | Int_t row = relid[2] ; //offset along x axis | |
468 | Int_t column = relid[3] ; //offset along z axis | |
469 | Double_t ps[3]= {0.0,GetCPVBoxSize(1)/2.,0.}; //Position on top of CPV | |
470 | Double_t psC[3]={0.0,0.0,0.}; //Global position | |
471 | pos[0] = - ( GetNumberOfCPVPadsPhi()/2. - row - 0.5 ) * GetPadSizePhi() ; // position of pad with respect | |
472 | pos[2] = - ( GetNumberOfCPVPadsZ() /2. - column - 0.5 ) * GetPadSizeZ() ; // of center of PHOS module | |
473 | ||
474 | //now apply possible shifts and rotations | |
475 | sprintf(path,"/ALIC_1/PHOS_%d/PCPV_1",relid[0]) ; | |
476 | if (!gGeoManager->cd(path)){ | |
477 | AliFatal("Geo manager can not find path \n"); | |
478 | } | |
479 | TGeoHMatrix *m = gGeoManager->GetCurrentMatrix(); | |
480 | if (m) m->LocalToMaster(ps,psC); | |
481 | else{ | |
482 | AliFatal("Geo matrixes are not loaded \n") ; | |
483 | } | |
484 | pos.SetXYZ(psC[0],psC[1],-psC[2]) ; | |
485 | } | |
d15a28e7 | 486 | } |
487 | ||
488 | //____________________________________________________________________________ | |
fd6f5ab1 | 489 | void AliPHOSGeometry::RelPosToAbsId(Int_t module, Double_t x, Double_t z, Int_t & absId) const |
842988a5 | 490 | { |
491 | // converts local PHOS-module (x, z) coordinates to absId | |
91daaf24 | 492 | |
493 | //find Global position | |
494 | if (!gGeoManager){ | |
495 | AliFatal("Geo manager not initialized\n"); | |
496 | } | |
fd6f5ab1 | 497 | Double_t posL[3]={x,-fCrystalShift,-z} ; //Only for EMC!!! |
498 | Double_t posG[3] ; | |
91daaf24 | 499 | char path[100] ; |
500 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",module) ; | |
91daaf24 | 501 | if (!gGeoManager->cd(path)){ |
fd6f5ab1 | 502 | AliFatal("Geo manager can not find path \n"); |
503 | } | |
504 | TGeoHMatrix *mPHOS = gGeoManager->GetCurrentMatrix(); | |
505 | if (mPHOS){ | |
506 | mPHOS->LocalToMaster(posL,posG); | |
91daaf24 | 507 | } |
91daaf24 | 508 | else{ |
509 | AliFatal("Geo matrixes are not loaded \n") ; | |
510 | } | |
fd6f5ab1 | 511 | |
512 | Int_t relid[4] ; | |
513 | gGeoManager->FindNode(posG[0],posG[1],posG[2]) ; | |
91daaf24 | 514 | //Check that path contains PSTR and extract strip number |
515 | TString cpath(gGeoManager->GetPath()) ; | |
516 | Int_t indx = cpath.Index("PCEL") ; | |
517 | if(indx==-1){ //for the few events when particle hits between srips use ideal geometry | |
518 | relid[0] = module ; | |
519 | relid[1] = 0 ; | |
520 | relid[2] = static_cast<Int_t>(TMath::Ceil( x/ GetCellStep() + GetNPhi() / 2.) ); | |
521 | relid[3] = static_cast<Int_t>(TMath::Ceil(-z/ GetCellStep() + GetNZ() / 2.) ) ; | |
522 | if(relid[2]<1)relid[2]=1 ; | |
523 | if(relid[3]<1)relid[3]=1 ; | |
524 | if(relid[2]>GetNPhi())relid[2]=GetNPhi() ; | |
525 | if(relid[3]>GetNZ())relid[3]=GetNZ() ; | |
fd6f5ab1 | 526 | RelToAbsNumbering(relid,absId) ; |
91daaf24 | 527 | } |
528 | else{ | |
529 | Int_t indx2 = cpath.Index("/",indx) ; | |
530 | if(indx2==-1) | |
531 | indx2=cpath.Length() ; | |
532 | TString cell=cpath(indx+5,indx2-indx-5) ; | |
533 | Int_t icell=cell.Atoi() ; | |
534 | indx = cpath.Index("PSTR") ; | |
535 | indx2 = cpath.Index("/",indx) ; | |
536 | TString strip=cpath(indx+5,indx2-indx-5) ; | |
537 | Int_t iStrip = strip.Atoi() ; | |
fd6f5ab1 | 538 | |
539 | Int_t row = fGeometryEMCA->GetNStripZ() - (iStrip - 1) % (fGeometryEMCA->GetNStripZ()) ; | |
540 | Int_t col = (Int_t) TMath::Ceil((Double_t) iStrip/(fGeometryEMCA->GetNStripZ())) -1 ; | |
541 | ||
542 | // Absid for 8x2-strips. Looks nice :) | |
543 | absId = (module-1)*GetNCristalsInModule() + | |
544 | row * 2 + (col*fGeometryEMCA->GetNCellsXInStrip() + (icell - 1) / 2)*GetNZ() - (icell & 1 ? 1 : 0); | |
545 | ||
91daaf24 | 546 | } |
547 | ||
842988a5 | 548 | } |
549 | ||
550 | //____________________________________________________________________________ | |
7b7c1533 | 551 | void AliPHOSGeometry::RelPosInModule(const Int_t * relid, Float_t & x, Float_t & z) const |
d15a28e7 | 552 | { |
b2a60966 | 553 | // Converts the relative numbering into the local PHOS-module (x, z) coordinates |
52a36ffd | 554 | // Note: sign of z differs from that in the previous version (Yu.Kharlov, 12 Oct 2000) |
b2a60966 | 555 | |
d15a28e7 | 556 | |
91daaf24 | 557 | if (!gGeoManager){ |
558 | AliFatal("Geo manager not initialized\n"); | |
559 | } | |
560 | //construct module name | |
561 | char path[100] ; | |
562 | if(relid[1]==0){ //this is PHOS | |
563 | ||
564 | // Calculations using ideal geometry (obsolete) | |
565 | // x = - ( GetNPhi()/2. - relid[2] + 0.5 ) * GetCellStep() ; // position of Xtal with respect | |
566 | // z = - ( GetNZ() /2. - relid[3] + 0.5 ) * GetCellStep() ; // of center of PHOS module | |
567 | ||
fd6f5ab1 | 568 | Double_t pos[3]= {0.0,-fCryCellShift,0.}; //Position incide the crystal |
91daaf24 | 569 | Double_t posC[3]={0.0,0.0,0.}; //Global position |
570 | ||
571 | //Shift and possibly apply misalignment corrections | |
fd6f5ab1 | 572 | Int_t nCellsXInStrip=fGeometryEMCA->GetNCellsXInStrip() ; |
573 | Int_t nCellsZInStrip=fGeometryEMCA->GetNCellsZInStrip() ; | |
574 | // Int_t strip=1+(relid[3]-1)/fGeometryEMCA->GetNCellsZInStrip()+((relid[2]-1)/nCellsInStrip)*fGeometryEMCA->GetNStripZ() ; | |
575 | Int_t strip=1+((Int_t) TMath::Ceil((Double_t)relid[2]/nCellsXInStrip))*fGeometryEMCA->GetNStripZ()- | |
576 | (Int_t) TMath::Ceil((Double_t)relid[3]/nCellsZInStrip) ; | |
577 | Int_t cellraw= relid[3]%nCellsZInStrip ; | |
578 | if(cellraw==0)cellraw=nCellsZInStrip ; | |
579 | Int_t cell= ((relid[2]-1)%nCellsXInStrip)*nCellsZInStrip + cellraw ; | |
91daaf24 | 580 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1/PSTR_%d/PCEL_%d", |
581 | relid[0],strip,cell) ; | |
582 | if (!gGeoManager->cd(path)){ | |
583 | AliFatal("Geo manager can not find path \n"); | |
584 | } | |
585 | TGeoHMatrix *m = gGeoManager->GetCurrentMatrix(); | |
586 | if (m) m->LocalToMaster(pos,posC); | |
587 | else{ | |
588 | AliFatal("Geo matrixes are not loaded \n") ; | |
589 | } | |
3738cc2d | 590 | // printf("Local: x=%f, y=%f, z=%f \n",pos[0],pos[1],pos[2]) ; |
591 | // printf(" gl: x=%f, y=%f, z=%f \n",posC[0],posC[1],posC[2]) ; | |
91daaf24 | 592 | //Return to PHOS local system |
593 | Double_t posL[3]={posC[0],posC[1],posC[2]}; | |
3738cc2d | 594 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",relid[0]) ; |
595 | // sprintf(path,"/ALIC_1/PHOS_%d",relid[0]) ; | |
91daaf24 | 596 | if (!gGeoManager->cd(path)){ |
597 | AliFatal("Geo manager can not find path \n"); | |
598 | } | |
599 | TGeoHMatrix *mPHOS = gGeoManager->GetCurrentMatrix(); | |
600 | if (mPHOS) mPHOS->MasterToLocal(posC,posL); | |
601 | else{ | |
602 | AliFatal("Geo matrixes are not loaded \n") ; | |
603 | } | |
fd6f5ab1 | 604 | //printf("RelPosInMod: posL=[%f,%f,%f]\n",posL[0],posL[1],posL[2]) ; |
91daaf24 | 605 | //printf("old: x=%f, z=%f \n",x,z); |
606 | x=posL[0] ; | |
3738cc2d | 607 | z=-posL[2]; |
91daaf24 | 608 | return ; |
609 | } | |
610 | else{//CPV | |
611 | //first calculate position with respect to CPV plain | |
612 | Int_t row = relid[2] ; //offset along x axis | |
613 | Int_t column = relid[3] ; //offset along z axis | |
614 | Double_t pos[3]= {0.0,0.0,0.}; //Position incide the CPV printed circuit | |
615 | Double_t posC[3]={0.0,0.0,0.}; //Global position | |
3738cc2d | 616 | // x = - ( GetNumberOfCPVPadsPhi()/2. - row - 0.5 ) * GetPadSizePhi() ; // position of pad with respect |
617 | // z = - ( GetNumberOfCPVPadsZ() /2. - column - 0.5 ) * GetPadSizeZ() ; // of center of PHOS module | |
91daaf24 | 618 | pos[0] = - ( GetNumberOfCPVPadsPhi()/2. - row - 0.5 ) * GetPadSizePhi() ; // position of pad with respect |
619 | pos[2] = - ( GetNumberOfCPVPadsZ() /2. - column - 0.5 ) * GetPadSizeZ() ; // of center of PHOS module | |
3738cc2d | 620 | |
91daaf24 | 621 | //now apply possible shifts and rotations |
622 | sprintf(path,"/ALIC_1/PHOS_%d/PCPV_1",relid[0]) ; | |
623 | if (!gGeoManager->cd(path)){ | |
624 | AliFatal("Geo manager can not find path \n"); | |
625 | } | |
626 | TGeoHMatrix *m = gGeoManager->GetCurrentMatrix(); | |
627 | if (m) m->LocalToMaster(pos,posC); | |
628 | else{ | |
629 | AliFatal("Geo matrixes are not loaded \n") ; | |
630 | } | |
631 | //Return to PHOS local system | |
632 | Double_t posL[3]={0.,0.,0.,} ; | |
633 | sprintf(path,"/ALIC_1/PHOS_%d",relid[0]) ; | |
634 | if (!gGeoManager->cd(path)){ | |
635 | AliFatal("Geo manager can not find path \n"); | |
636 | } | |
637 | TGeoHMatrix *mPHOS = gGeoManager->GetCurrentMatrix(); | |
638 | if (mPHOS) mPHOS->MasterToLocal(posC,posL); | |
639 | else{ | |
640 | AliFatal("Geo matrixes are not loaded \n") ; | |
641 | } | |
642 | x=posL[0] ; | |
643 | z=posL[1]; | |
644 | return ; | |
645 | ||
52a36ffd | 646 | } |
91daaf24 | 647 | |
2f3366b6 | 648 | } |
aa0b9641 | 649 | |
650 | //____________________________________________________________________________ | |
651 | ||
7b51037f | 652 | void AliPHOSGeometry::GetModuleCenter(TVector3& center, |
653 | const char *det, | |
654 | Int_t module) const | |
aa0b9641 | 655 | { |
bfc17d18 | 656 | // Returns a position of the center of the CPV or EMC module |
91daaf24 | 657 | // in ideal (not misaligned) geometry |
1504ac47 | 658 | Float_t rDet = 0.; |
e77bb310 | 659 | if (strcmp(det,"CPV") == 0) rDet = GetIPtoCPVDistance (); |
660 | else if (strcmp(det,"EMC") == 0) rDet = GetIPtoCrystalSurface(); | |
351dd634 | 661 | else |
662 | AliFatal(Form("Wrong detector name %s",det)); | |
bfc17d18 | 663 | |
395f4eea | 664 | Float_t angle = GetPHOSAngle(module); // (40,20,0,-20,-40) degrees |
665 | angle *= TMath::Pi()/180; | |
666 | angle += 3*TMath::Pi()/2.; | |
7b51037f | 667 | center.SetXYZ(rDet*TMath::Cos(angle), rDet*TMath::Sin(angle), 0.); |
aa0b9641 | 668 | } |
669 | ||
670 | //____________________________________________________________________________ | |
671 | ||
7b51037f | 672 | void AliPHOSGeometry::Global2Local(TVector3& localPosition, |
673 | const TVector3& globalPosition, | |
674 | Int_t module) const | |
aa0b9641 | 675 | { |
bfc17d18 | 676 | // Transforms a global position of the rec.point to the local coordinate system |
91daaf24 | 677 | //Return to PHOS local system |
8e20650f | 678 | Double_t posG[3]={globalPosition.X(),globalPosition.Y(),globalPosition.Z()} ; |
91daaf24 | 679 | Double_t posL[3]={0.,0.,0.} ; |
680 | char path[100] ; | |
753b19cd | 681 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",module) ; |
682 | // sprintf(path,"/ALIC_1/PHOS_%d",module) ; | |
91daaf24 | 683 | if (!gGeoManager->cd(path)){ |
684 | AliFatal("Geo manager can not find path \n"); | |
685 | } | |
686 | TGeoHMatrix *mPHOS = gGeoManager->GetCurrentMatrix(); | |
687 | if (mPHOS) mPHOS->MasterToLocal(posG,posL); | |
688 | else{ | |
689 | AliFatal("Geo matrixes are not loaded \n") ; | |
690 | } | |
8e20650f | 691 | localPosition.SetXYZ(posL[0],posL[1]+fCrystalShift,-posL[2]) ; |
91daaf24 | 692 | |
693 | /* | |
395f4eea | 694 | Float_t angle = GetPHOSAngle(module); // (40,20,0,-20,-40) degrees |
695 | angle *= TMath::Pi()/180; | |
696 | angle += 3*TMath::Pi()/2.; | |
7b51037f | 697 | localPosition = globalPosition; |
698 | localPosition.RotateZ(-angle); | |
91daaf24 | 699 | */ |
700 | } | |
701 | //____________________________________________________________________________ | |
702 | void AliPHOSGeometry::Local2Global(Int_t mod, Float_t x, Float_t z, | |
703 | TVector3& globalPosition) const | |
704 | { | |
705 | char path[100] ; | |
706 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",mod) ; | |
8e20650f | 707 | // sprintf(path,"/ALIC_1/PHOS_%d",mod) ; |
91daaf24 | 708 | if (!gGeoManager->cd(path)){ |
709 | AliFatal("Geo manager can not find path \n"); | |
710 | } | |
8e20650f | 711 | Double_t posL[3]={x,-fCrystalShift,-z} ; //Only for EMC!!! |
91daaf24 | 712 | Double_t posG[3] ; |
713 | TGeoHMatrix *mPHOS = gGeoManager->GetCurrentMatrix(); | |
8e20650f | 714 | if (mPHOS){ |
715 | mPHOS->LocalToMaster(posL,posG); | |
716 | } | |
91daaf24 | 717 | else{ |
718 | AliFatal("Geo matrixes are not loaded \n") ; | |
719 | } | |
8e20650f | 720 | globalPosition.SetXYZ(posG[0],posG[1],posG[2]) ; |
91daaf24 | 721 | } |
722 | //____________________________________________________________________________ | |
407d15b3 | 723 | void AliPHOSGeometry::GetIncidentVector(const TVector3 &vtx, Int_t module, Float_t x,Float_t z, TVector3 &vInc) const { |
91daaf24 | 724 | //Calculates vector pointing from vertex to current poisition in module local frame |
022ee411 | 725 | //Note that PHOS local system and ALICE global have opposite z directions |
91daaf24 | 726 | |
753b19cd | 727 | Global2Local(vInc,vtx,module) ; |
8e20650f | 728 | vInc.SetXYZ(vInc.X()+x,vInc.Y(),vInc.Z()+z) ; |
aa0b9641 | 729 | } |