]>
Commit | Line | Data |
---|---|---|
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() ; | |
95 | } | |
96 | ||
d15a28e7 | 97 | //____________________________________________________________________________ |
98 | AliPHOSGeometry::~AliPHOSGeometry(void) | |
99 | { | |
b2a60966 | 100 | // dtor |
101 | ||
52a36ffd | 102 | if (fRotMatrixArray) fRotMatrixArray->Delete() ; |
103 | if (fRotMatrixArray) delete fRotMatrixArray ; | |
fa0bc588 | 104 | if (fPHOSAngle ) delete[] fPHOSAngle ; |
52a36ffd | 105 | } |
52a36ffd | 106 | |
91daaf24 | 107 | //____________________________________________________________________________ |
52a36ffd | 108 | void AliPHOSGeometry::Init(void) |
109 | { | |
a4e98857 | 110 | // Initializes the PHOS parameters : |
111 | // IHEP is the Protvino CPV (cathode pad chambers) | |
710f859a | 112 | |
809cd394 | 113 | TString test(GetName()) ; |
9d1b528b | 114 | if (test != "IHEP" && test != "noCPV") { |
351dd634 | 115 | AliFatal(Form("%s is not a known geometry (choose among IHEP)", |
116 | test.Data() )) ; | |
809cd394 | 117 | } |
118 | ||
710f859a | 119 | fgInit = kTRUE ; |
05d33a3d | 120 | |
85698486 | 121 | fNModules = 5; |
122 | fAngle = 20; | |
05d33a3d | 123 | |
710f859a | 124 | fGeometryEMCA = new AliPHOSEMCAGeometry(); |
125 | ||
126 | fGeometryCPV = new AliPHOSCPVGeometry (); | |
127 | ||
128 | fGeometrySUPP = new AliPHOSSupportGeometry(); | |
129 | ||
130 | fPHOSAngle = new Float_t[fNModules] ; | |
131 | ||
132 | Float_t * emcParams = fGeometryEMCA->GetEMCParams() ; | |
133 | ||
581e32d4 | 134 | fPHOSParams[0] = TMath::Max((Double_t)fGeometryCPV->GetCPVBoxSize(0)/2., |
a83b6179 | 135 | (Double_t)(emcParams[0] - (emcParams[1]-emcParams[0])* |
136 | fGeometryCPV->GetCPVBoxSize(1)/2/emcParams[3])); | |
710f859a | 137 | fPHOSParams[1] = emcParams[1] ; |
581e32d4 | 138 | fPHOSParams[2] = TMath::Max((Double_t)emcParams[2], (Double_t)fGeometryCPV->GetCPVBoxSize(2)/2.); |
710f859a | 139 | fPHOSParams[3] = emcParams[3] + fGeometryCPV->GetCPVBoxSize(1)/2. ; |
140 | ||
141 | fIPtoUpperCPVsurface = fGeometryEMCA->GetIPtoOuterCoverDistance() - fGeometryCPV->GetCPVBoxSize(1) ; | |
142 | ||
143 | Int_t index ; | |
144 | for ( index = 0; index < fNModules; index++ ) | |
52a36ffd | 145 | fPHOSAngle[index] = 0.0 ; // Module position angles are set in CreateGeometry() |
710f859a | 146 | |
710f859a | 147 | fRotMatrixArray = new TObjArray(fNModules) ; |
05d33a3d | 148 | |
85698486 | 149 | // Geometry parameters are calculated |
150 | ||
151 | SetPHOSAngles(); | |
152 | Double_t const kRADDEG = 180.0 / TMath::Pi() ; | |
153 | Float_t r = GetIPtoOuterCoverDistance() + fPHOSParams[3] - GetCPVBoxSize(1) ; | |
154 | for (Int_t iModule=0; iModule<fNModules; iModule++) { | |
155 | fModuleCenter[iModule][0] = r * TMath::Sin(fPHOSAngle[iModule] / kRADDEG ); | |
156 | fModuleCenter[iModule][1] =-r * TMath::Cos(fPHOSAngle[iModule] / kRADDEG ); | |
157 | fModuleCenter[iModule][2] = 0.; | |
158 | ||
159 | fModuleAngle[iModule][0][0] = 90; | |
160 | fModuleAngle[iModule][0][1] = fPHOSAngle[iModule]; | |
161 | fModuleAngle[iModule][1][0] = 0; | |
162 | fModuleAngle[iModule][1][1] = 0; | |
163 | fModuleAngle[iModule][2][0] = 90; | |
164 | fModuleAngle[iModule][2][1] = 270 + fPHOSAngle[iModule]; | |
05d33a3d | 165 | } |
166 | ||
52a36ffd | 167 | } |
168 | ||
169 | //____________________________________________________________________________ | |
170 | AliPHOSGeometry * AliPHOSGeometry::GetInstance() | |
171 | { | |
a4e98857 | 172 | // Returns the pointer of the unique instance; singleton specific |
173 | ||
809cd394 | 174 | return static_cast<AliPHOSGeometry *>( fgGeom ) ; |
52a36ffd | 175 | } |
176 | ||
177 | //____________________________________________________________________________ | |
178 | AliPHOSGeometry * AliPHOSGeometry::GetInstance(const Text_t* name, const Text_t* title) | |
179 | { | |
180 | // Returns the pointer of the unique instance | |
a4e98857 | 181 | // Creates it with the specified options (name, title) if it does not exist yet |
182 | ||
52a36ffd | 183 | AliPHOSGeometry * rv = 0 ; |
184 | if ( fgGeom == 0 ) { | |
185 | if ( strcmp(name,"") == 0 ) | |
186 | rv = 0 ; | |
187 | else { | |
188 | fgGeom = new AliPHOSGeometry(name, title) ; | |
189 | if ( fgInit ) | |
190 | rv = (AliPHOSGeometry * ) fgGeom ; | |
191 | else { | |
192 | rv = 0 ; | |
193 | delete fgGeom ; | |
194 | fgGeom = 0 ; | |
195 | } | |
196 | } | |
197 | } | |
198 | else { | |
21cd0c07 | 199 | if ( strcmp(fgGeom->GetName(), name) != 0 ) |
351dd634 | 200 | ::Error("GetInstance", "Current geometry is %s. You cannot call %s", |
201 | fgGeom->GetName(), name) ; | |
52a36ffd | 202 | else |
203 | rv = (AliPHOSGeometry *) fgGeom ; | |
204 | } | |
205 | return rv ; | |
206 | } | |
4697edca | 207 | |
52a36ffd | 208 | //____________________________________________________________________________ |
209 | void AliPHOSGeometry::SetPHOSAngles() | |
210 | { | |
a4e98857 | 211 | // Calculates the position of the PHOS modules in ALICE global coordinate system |
91daaf24 | 212 | // in ideal geometry |
52a36ffd | 213 | |
a8c47ab6 | 214 | Double_t const kRADDEG = 180.0 / TMath::Pi() ; |
710f859a | 215 | Float_t pphi = 2 * TMath::ATan( GetOuterBoxSize(0) / ( 2.0 * GetIPtoUpperCPVsurface() ) ) ; |
52a36ffd | 216 | pphi *= kRADDEG ; |
710f859a | 217 | if (pphi > fAngle){ |
351dd634 | 218 | AliError(Form("PHOS modules overlap!\n pphi = %f fAngle = %f", |
219 | pphi, fAngle)); | |
710f859a | 220 | |
221 | } | |
ed4205d8 | 222 | pphi = fAngle; |
52a36ffd | 223 | |
224 | for( Int_t i = 1; i <= fNModules ; i++ ) { | |
ed4205d8 | 225 | Float_t angle = pphi * ( i - fNModules / 2.0 - 0.5 ) ; |
52a36ffd | 226 | fPHOSAngle[i-1] = - angle ; |
227 | } | |
d15a28e7 | 228 | } |
229 | ||
230 | //____________________________________________________________________________ | |
fc7e2f43 | 231 | Bool_t AliPHOSGeometry::AbsToRelNumbering(Int_t AbsId, Int_t * relid) const |
d15a28e7 | 232 | { |
91daaf24 | 233 | // Converts the absolute numbering into the following array |
b2a60966 | 234 | // relid[0] = PHOS Module number 1:fNModules |
235 | // relid[1] = 0 if PbW04 | |
710f859a | 236 | // = -1 if CPV |
237 | // relid[2] = Row number inside a PHOS module | |
238 | // relid[3] = Column number inside a PHOS module | |
d15a28e7 | 239 | |
240 | Bool_t rv = kTRUE ; | |
92862013 | 241 | Float_t id = AbsId ; |
d15a28e7 | 242 | |
710f859a | 243 | Int_t phosmodulenumber = (Int_t)TMath:: Ceil( id / GetNCristalsInModule() ) ; |
d15a28e7 | 244 | |
710f859a | 245 | if ( phosmodulenumber > GetNModules() ) { // it is a CPV pad |
246 | ||
247 | id -= GetNPhi() * GetNZ() * GetNModules() ; | |
248 | Float_t nCPV = GetNumberOfCPVPadsPhi() * GetNumberOfCPVPadsZ() ; | |
249 | relid[0] = (Int_t) TMath::Ceil( id / nCPV ) ; | |
250 | relid[1] = -1 ; | |
251 | id -= ( relid[0] - 1 ) * nCPV ; | |
252 | relid[2] = (Int_t) TMath::Ceil( id / GetNumberOfCPVPadsZ() ) ; | |
253 | relid[3] = (Int_t) ( id - ( relid[2] - 1 ) * GetNumberOfCPVPadsZ() ) ; | |
d15a28e7 | 254 | } |
710f859a | 255 | else { // it is a PW04 crystal |
d15a28e7 | 256 | |
92862013 | 257 | relid[0] = phosmodulenumber ; |
258 | relid[1] = 0 ; | |
259 | id -= ( phosmodulenumber - 1 ) * GetNPhi() * GetNZ() ; | |
710f859a | 260 | relid[2] = (Int_t)TMath::Ceil( id / GetNZ() ) ; |
261 | relid[3] = (Int_t)( id - ( relid[2] - 1 ) * GetNZ() ) ; | |
d15a28e7 | 262 | } |
263 | return rv ; | |
264 | } | |
52a36ffd | 265 | |
9f616d61 | 266 | //____________________________________________________________________________ |
91daaf24 | 267 | void AliPHOSGeometry::GetGlobal(const AliRecPoint* recPoint, TVector3 & gpos) const |
d15a28e7 | 268 | { |
a4e98857 | 269 | // Calculates the coordinates of a RecPoint and the error matrix in the ALICE global coordinate system |
b2a60966 | 270 | |
91daaf24 | 271 | AliPHOSRecPoint * tmpPHOS = (AliPHOSRecPoint *) recPoint ; |
92862013 | 272 | TVector3 localposition ; |
d15a28e7 | 273 | |
274 | tmpPHOS->GetLocalPosition(gpos) ; | |
275 | ||
91daaf24 | 276 | if (!gGeoManager){ |
277 | AliFatal("Geo manager not initialized\n"); | |
d15a28e7 | 278 | } |
91daaf24 | 279 | //construct module name |
280 | char path[100] ; | |
281 | Double_t dy ; | |
282 | if(tmpPHOS->IsEmc()){ | |
283 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",tmpPHOS->GetPHOSMod()) ; | |
284 | //calculate offset to crystal surface | |
285 | Float_t * inthermo = fGeometryEMCA->GetInnerThermoHalfSize() ; | |
286 | Float_t * strip = fGeometryEMCA->GetStripHalfSize() ; | |
287 | Float_t* splate = fGeometryEMCA->GetSupportPlateHalfSize(); | |
288 | Float_t * crystal = fGeometryEMCA->GetCrystalHalfSize() ; | |
289 | Float_t * pin = fGeometryEMCA->GetAPDHalfSize() ; | |
290 | Float_t * preamp = fGeometryEMCA->GetPreampHalfSize() ; | |
291 | dy=-inthermo[1]+strip[1]+splate[1]+crystal[1]-fGeometryEMCA->GetAirGapLed()/2.+pin[1]+preamp[1] ; | |
d15a28e7 | 292 | } |
91daaf24 | 293 | else{ |
294 | sprintf(path,"/ALIC_1/PHOS_%d/PCPV_1",tmpPHOS->GetPHOSMod()) ; | |
295 | dy= GetCPVBoxSize(1)/2. ; //center of CPV module | |
296 | } | |
297 | Double_t pos[3]={gpos.X(),gpos.Y()-dy,gpos.Z()} ; | |
298 | Double_t posC[3]; | |
299 | //now apply possible shifts and rotations | |
300 | if (!gGeoManager->cd(path)){ | |
301 | AliFatal("Geo manager can not find path \n"); | |
302 | } | |
303 | TGeoHMatrix *m = gGeoManager->GetCurrentMatrix(); | |
304 | if (m) m->LocalToMaster(pos,posC); | |
305 | else{ | |
306 | AliFatal("Geo matrixes are not loaded \n") ; | |
307 | } | |
308 | if(tmpPHOS->IsEmc()) | |
309 | gpos.SetXYZ(posC[0],posC[1],-posC[2]) ; | |
310 | else | |
311 | gpos.SetXYZ(posC[0],posC[1],posC[2]) ; | |
7b51037f | 312 | |
aa35fc01 | 313 | } |
aa35fc01 | 314 | //____________________________________________________________________________ |
91daaf24 | 315 | void AliPHOSGeometry::ImpactOnEmc(Double_t * vtx, Double_t theta, Double_t phi, |
316 | Int_t & moduleNumber, Double_t & z, Double_t & x) const | |
aa35fc01 | 317 | { |
318 | // calculates the impact coordinates on PHOS of a neutral particle | |
91daaf24 | 319 | // emitted in the vertex vtx[3] with direction theta and phi in the ALICE global coordinate system |
320 | TVector3 p(TMath::Sin(theta)*TMath::Cos(phi),TMath::Sin(theta)*TMath::Sin(phi),TMath::Cos(theta)) ; | |
321 | TVector3 v(vtx[0],vtx[1],vtx[2]) ; | |
aa35fc01 | 322 | |
91daaf24 | 323 | //calculate offset to crystal surface |
324 | Float_t * inthermo = fGeometryEMCA->GetInnerThermoHalfSize() ; | |
325 | Float_t * strip = fGeometryEMCA->GetStripHalfSize() ; | |
326 | Float_t* splate = fGeometryEMCA->GetSupportPlateHalfSize(); | |
327 | Float_t * crystal = fGeometryEMCA->GetCrystalHalfSize() ; | |
328 | Float_t * pin = fGeometryEMCA->GetAPDHalfSize() ; | |
329 | Float_t * preamp = fGeometryEMCA->GetPreampHalfSize() ; | |
330 | Float_t dy=-inthermo[1]+strip[1]+splate[1]+crystal[1]-fGeometryEMCA->GetAirGapLed()/2.+pin[1]+preamp[1] ; | |
331 | ||
332 | if (!gGeoManager){ | |
333 | AliFatal("Geo manager not initialized\n"); | |
334 | } | |
335 | ||
336 | for(Int_t imod=1; imod<=GetNModules() ; imod++){ | |
337 | //create vector from (0,0,0) to center of crystal surface of imod module | |
338 | Double_t tmp[3]={0.,-dy,0.} ; | |
339 | ||
340 | char path[100] ; | |
341 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",imod) ; | |
342 | if (!gGeoManager->cd(path)){ | |
343 | AliFatal("Geo manager can not find path \n"); | |
344 | } | |
345 | TGeoHMatrix *m = gGeoManager->GetCurrentMatrix(); | |
346 | Double_t posG[3]={0.,0.,0.} ; | |
347 | if (m) m->LocalToMaster(tmp,posG); | |
348 | TVector3 n(posG[0],posG[1],-posG[2]) ; | |
349 | Double_t direction=n.Dot(p) ; | |
350 | if(direction<=0.) | |
351 | continue ; //momentum directed FROM module | |
352 | Double_t x = (n.Mag2()-n.Dot(v))/direction ; | |
353 | //Calculate direction in module plain | |
354 | n-=v+x*p ; | |
355 | n*=-1. ; | |
356 | Float_t * sz = fGeometryEMCA->GetInnerThermoHalfSize() ; //Wery close to the zise of the Xtl set | |
357 | if(TMath::Abs(TMath::Abs(n.Z())<sz[2]) && n.Pt()<sz[0]){ | |
358 | moduleNumber = imod ; | |
359 | z=n.Z() ; | |
360 | x=TMath::Sign(n.Pt(),n.X()) ; | |
361 | return ; | |
362 | } | |
363 | } | |
364 | //Not in acceptance | |
365 | x=0; z=0 ; | |
366 | moduleNumber=0 ; | |
aa35fc01 | 367 | |
aa35fc01 | 368 | } |
369 | ||
e957fea8 | 370 | //____________________________________________________________________________ |
1c9d8212 | 371 | Bool_t AliPHOSGeometry::Impact(const TParticle * particle) const |
372 | { | |
e957fea8 | 373 | // Tells if a particle enters PHOS |
374 | Bool_t in=kFALSE; | |
375 | Int_t moduleNumber=0; | |
91daaf24 | 376 | Double_t vtx[3]={particle->Vx(),particle->Vy(),particle->Vz()} ; |
1c9d8212 | 377 | Double_t z,x; |
91daaf24 | 378 | ImpactOnEmc(vtx,particle->Theta(),particle->Phi(),moduleNumber,z,x); |
379 | if(moduleNumber!=0) | |
e957fea8 | 380 | in=kTRUE; |
e957fea8 | 381 | return in; |
1c9d8212 | 382 | } |
383 | ||
d15a28e7 | 384 | //____________________________________________________________________________ |
7b7c1533 | 385 | Bool_t AliPHOSGeometry::RelToAbsNumbering(const Int_t * relid, Int_t & AbsId) const |
d15a28e7 | 386 | { |
b2a60966 | 387 | // Converts the relative numbering into the absolute numbering |
ed4205d8 | 388 | // EMCA crystals: |
389 | // AbsId = from 1 to fNModules * fNPhi * fNZ | |
ed4205d8 | 390 | // CPV pad: |
391 | // AbsId = from N(total PHOS crystals) + 1 | |
392 | // to NCPVModules * fNumberOfCPVPadsPhi * fNumberOfCPVPadsZ | |
d15a28e7 | 393 | |
394 | Bool_t rv = kTRUE ; | |
710f859a | 395 | |
396 | if ( relid[1] == 0 ) { // it is a Phos crystal | |
52a36ffd | 397 | AbsId = |
710f859a | 398 | ( relid[0] - 1 ) * GetNPhi() * GetNZ() // the offset of PHOS modules |
399 | + ( relid[2] - 1 ) * GetNZ() // the offset along phi | |
400 | + relid[3] ; // the offset along z | |
d15a28e7 | 401 | } |
710f859a | 402 | else { // it is a CPV pad |
403 | AbsId = GetNPhi() * GetNZ() * GetNModules() // the offset to separate EMCA crystals from CPV pads | |
404 | + ( relid[0] - 1 ) * GetNumberOfCPVPadsPhi() * GetNumberOfCPVPadsZ() // the pads offset of PHOS modules | |
405 | + ( relid[2] - 1 ) * GetNumberOfCPVPadsZ() // the pads offset of a CPV row | |
52a36ffd | 406 | + relid[3] ; // the column number |
407 | } | |
408 | ||
d15a28e7 | 409 | return rv ; |
410 | } | |
411 | ||
412 | //____________________________________________________________________________ | |
fc7e2f43 | 413 | void AliPHOSGeometry::RelPosInAlice(Int_t id, TVector3 & pos ) const |
d15a28e7 | 414 | { |
a4e98857 | 415 | // Converts the absolute numbering into the global ALICE coordinate system |
b2a60966 | 416 | |
91daaf24 | 417 | if (!gGeoManager){ |
418 | AliFatal("Geo manager not initialized\n"); | |
419 | } | |
ed4205d8 | 420 | |
91daaf24 | 421 | Int_t relid[4] ; |
ed4205d8 | 422 | |
91daaf24 | 423 | AbsToRelNumbering(id , relid) ; |
ed4205d8 | 424 | |
91daaf24 | 425 | //construct module name |
426 | char path[100] ; | |
427 | if(relid[1]==0){ //this is EMC | |
428 | ||
429 | Float_t * xls = fGeometryEMCA->GetCrystalHalfSize() ; | |
430 | Double_t ps[3]= {0.0,-xls[1],0.}; //Position incide the crystal | |
431 | Double_t psC[3]={0.0,0.0,0.}; //Global position | |
432 | ||
433 | //Shift and possibly apply misalignment corrections | |
434 | Int_t nCellsInStrip=fGeometryEMCA->GetNCellsXInStrip() ; | |
435 | Int_t strip=relid[3]/fGeometryEMCA->GetNCellsZInStrip()+((relid[2]-1)/nCellsInStrip)*GetNZ()/fGeometryEMCA->GetNCellsZInStrip() ; | |
436 | Int_t cell=fGeometryEMCA->GetNCellsZInStrip()*relid[2]%nCellsInStrip-relid[3]%fGeometryEMCA->GetNCellsZInStrip() ; | |
437 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1/PSTR_%d/PCEL_%d", | |
438 | relid[0],strip,cell) ; | |
439 | if (!gGeoManager->cd(path)){ | |
440 | AliFatal("Geo manager can not find path \n"); | |
441 | } | |
442 | TGeoHMatrix *m = gGeoManager->GetCurrentMatrix(); | |
443 | if (m) m->LocalToMaster(ps,psC); | |
444 | else{ | |
445 | AliFatal("Geo matrixes are not loaded \n") ; | |
446 | } | |
447 | pos.SetXYZ(psC[0],psC[1],-psC[2]) ; | |
448 | } | |
449 | else{ | |
450 | //first calculate position with respect to CPV plain | |
451 | Int_t row = relid[2] ; //offset along x axis | |
452 | Int_t column = relid[3] ; //offset along z axis | |
453 | Double_t ps[3]= {0.0,GetCPVBoxSize(1)/2.,0.}; //Position on top of CPV | |
454 | Double_t psC[3]={0.0,0.0,0.}; //Global position | |
455 | pos[0] = - ( GetNumberOfCPVPadsPhi()/2. - row - 0.5 ) * GetPadSizePhi() ; // position of pad with respect | |
456 | pos[2] = - ( GetNumberOfCPVPadsZ() /2. - column - 0.5 ) * GetPadSizeZ() ; // of center of PHOS module | |
457 | ||
458 | //now apply possible shifts and rotations | |
459 | sprintf(path,"/ALIC_1/PHOS_%d/PCPV_1",relid[0]) ; | |
460 | if (!gGeoManager->cd(path)){ | |
461 | AliFatal("Geo manager can not find path \n"); | |
462 | } | |
463 | TGeoHMatrix *m = gGeoManager->GetCurrentMatrix(); | |
464 | if (m) m->LocalToMaster(ps,psC); | |
465 | else{ | |
466 | AliFatal("Geo matrixes are not loaded \n") ; | |
467 | } | |
468 | pos.SetXYZ(psC[0],psC[1],-psC[2]) ; | |
469 | } | |
d15a28e7 | 470 | } |
471 | ||
472 | //____________________________________________________________________________ | |
5d0435dd | 473 | void AliPHOSGeometry::RelPosToAbsId(Int_t module, Double_t x, Double_t z, Int_t & AbsId) const |
842988a5 | 474 | { |
475 | // converts local PHOS-module (x, z) coordinates to absId | |
91daaf24 | 476 | |
477 | //find Global position | |
478 | if (!gGeoManager){ | |
479 | AliFatal("Geo manager not initialized\n"); | |
480 | } | |
842988a5 | 481 | Int_t relid[4] ; |
91daaf24 | 482 | char path[100] ; |
483 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",module) ; | |
484 | Double_t lpos[3]={x,0.0,z} ; | |
485 | Double_t gpos[3]={0.,0.,0.} ; | |
486 | if (!gGeoManager->cd(path)){ | |
487 | AliFatal("Geo manager can not find path \n"); | |
488 | } | |
489 | TGeoHMatrix *m = gGeoManager->GetCurrentMatrix(); | |
490 | if (m) m->LocalToMaster(lpos,gpos); | |
491 | else{ | |
492 | AliFatal("Geo matrixes are not loaded \n") ; | |
493 | } | |
494 | gGeoManager->FindNode(gpos[0],gpos[1],gpos[2]) ; | |
495 | //Check that path contains PSTR and extract strip number | |
496 | TString cpath(gGeoManager->GetPath()) ; | |
497 | Int_t indx = cpath.Index("PCEL") ; | |
498 | if(indx==-1){ //for the few events when particle hits between srips use ideal geometry | |
499 | relid[0] = module ; | |
500 | relid[1] = 0 ; | |
501 | relid[2] = static_cast<Int_t>(TMath::Ceil( x/ GetCellStep() + GetNPhi() / 2.) ); | |
502 | relid[3] = static_cast<Int_t>(TMath::Ceil(-z/ GetCellStep() + GetNZ() / 2.) ) ; | |
503 | if(relid[2]<1)relid[2]=1 ; | |
504 | if(relid[3]<1)relid[3]=1 ; | |
505 | if(relid[2]>GetNPhi())relid[2]=GetNPhi() ; | |
506 | if(relid[3]>GetNZ())relid[3]=GetNZ() ; | |
507 | } | |
508 | else{ | |
509 | Int_t indx2 = cpath.Index("/",indx) ; | |
510 | if(indx2==-1) | |
511 | indx2=cpath.Length() ; | |
512 | TString cell=cpath(indx+5,indx2-indx-5) ; | |
513 | Int_t icell=cell.Atoi() ; | |
514 | indx = cpath.Index("PSTR") ; | |
515 | indx2 = cpath.Index("/",indx) ; | |
516 | TString strip=cpath(indx+5,indx2-indx-5) ; | |
517 | Int_t iStrip = strip.Atoi() ; | |
518 | relid[0] = module ; | |
519 | relid[1] = 0 ; | |
520 | Int_t raw = fGeometryEMCA->GetNCellsXInStrip()*(iStrip-1)/fGeometryEMCA->GetNStripZ() + | |
521 | 1 + (icell-1)/fGeometryEMCA->GetNCellsZInStrip() ; | |
522 | Int_t col = fGeometryEMCA->GetNCellsZInStrip()*(1+(iStrip-1)%fGeometryEMCA->GetNStripZ()) - | |
523 | (icell-1)%fGeometryEMCA->GetNCellsZInStrip() ; | |
524 | if(col==0) col=GetNZ() ; | |
525 | relid[2] = raw ; | |
526 | relid[3] = col ; | |
527 | } | |
528 | ||
842988a5 | 529 | RelToAbsNumbering(relid,AbsId) ; |
530 | } | |
531 | ||
532 | //____________________________________________________________________________ | |
7b7c1533 | 533 | void AliPHOSGeometry::RelPosInModule(const Int_t * relid, Float_t & x, Float_t & z) const |
d15a28e7 | 534 | { |
b2a60966 | 535 | // Converts the relative numbering into the local PHOS-module (x, z) coordinates |
52a36ffd | 536 | // Note: sign of z differs from that in the previous version (Yu.Kharlov, 12 Oct 2000) |
b2a60966 | 537 | |
d15a28e7 | 538 | |
91daaf24 | 539 | if (!gGeoManager){ |
540 | AliFatal("Geo manager not initialized\n"); | |
541 | } | |
542 | //construct module name | |
543 | char path[100] ; | |
544 | if(relid[1]==0){ //this is PHOS | |
545 | ||
546 | // Calculations using ideal geometry (obsolete) | |
547 | // x = - ( GetNPhi()/2. - relid[2] + 0.5 ) * GetCellStep() ; // position of Xtal with respect | |
548 | // z = - ( GetNZ() /2. - relid[3] + 0.5 ) * GetCellStep() ; // of center of PHOS module | |
549 | ||
550 | Double_t pos[3]= {0.0,0.0,0.}; //Position incide the crystal (Y coordinalte is not important) | |
551 | Double_t posC[3]={0.0,0.0,0.}; //Global position | |
552 | ||
553 | //Shift and possibly apply misalignment corrections | |
554 | Int_t nCellsInStrip=fGeometryEMCA->GetNCellsXInStrip() ; | |
555 | Int_t strip=1+(relid[3]-1)/fGeometryEMCA->GetNCellsZInStrip()+((relid[2]-1)/nCellsInStrip)*fGeometryEMCA->GetNStripZ() ; | |
556 | Int_t sellRaw = (relid[2]-1)%nCellsInStrip ; | |
557 | Int_t cell=fGeometryEMCA->GetNCellsZInStrip()*(sellRaw+1) -(relid[3]-1)%fGeometryEMCA->GetNCellsZInStrip() ; | |
558 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1/PSTR_%d/PCEL_%d", | |
559 | relid[0],strip,cell) ; | |
560 | if (!gGeoManager->cd(path)){ | |
561 | AliFatal("Geo manager can not find path \n"); | |
562 | } | |
563 | TGeoHMatrix *m = gGeoManager->GetCurrentMatrix(); | |
564 | if (m) m->LocalToMaster(pos,posC); | |
565 | else{ | |
566 | AliFatal("Geo matrixes are not loaded \n") ; | |
567 | } | |
568 | //Return to PHOS local system | |
569 | Double_t posL[3]={posC[0],posC[1],posC[2]}; | |
570 | sprintf(path,"/ALIC_1/PHOS_%d",relid[0]) ; | |
571 | if (!gGeoManager->cd(path)){ | |
572 | AliFatal("Geo manager can not find path \n"); | |
573 | } | |
574 | TGeoHMatrix *mPHOS = gGeoManager->GetCurrentMatrix(); | |
575 | if (mPHOS) mPHOS->MasterToLocal(posC,posL); | |
576 | else{ | |
577 | AliFatal("Geo matrixes are not loaded \n") ; | |
578 | } | |
579 | //printf("old: x=%f, z=%f \n",x,z); | |
580 | x=posL[0] ; | |
581 | z=-posL[1]; | |
582 | //printf("Geo: x=%f, z=%f \n",x,z); | |
583 | return ; | |
584 | } | |
585 | else{//CPV | |
586 | //first calculate position with respect to CPV plain | |
587 | Int_t row = relid[2] ; //offset along x axis | |
588 | Int_t column = relid[3] ; //offset along z axis | |
589 | Double_t pos[3]= {0.0,0.0,0.}; //Position incide the CPV printed circuit | |
590 | Double_t posC[3]={0.0,0.0,0.}; //Global position | |
591 | pos[0] = - ( GetNumberOfCPVPadsPhi()/2. - row - 0.5 ) * GetPadSizePhi() ; // position of pad with respect | |
592 | pos[2] = - ( GetNumberOfCPVPadsZ() /2. - column - 0.5 ) * GetPadSizeZ() ; // of center of PHOS module | |
593 | ||
594 | //now apply possible shifts and rotations | |
595 | sprintf(path,"/ALIC_1/PHOS_%d/PCPV_1",relid[0]) ; | |
596 | if (!gGeoManager->cd(path)){ | |
597 | AliFatal("Geo manager can not find path \n"); | |
598 | } | |
599 | TGeoHMatrix *m = gGeoManager->GetCurrentMatrix(); | |
600 | if (m) m->LocalToMaster(pos,posC); | |
601 | else{ | |
602 | AliFatal("Geo matrixes are not loaded \n") ; | |
603 | } | |
604 | //Return to PHOS local system | |
605 | Double_t posL[3]={0.,0.,0.,} ; | |
606 | sprintf(path,"/ALIC_1/PHOS_%d",relid[0]) ; | |
607 | if (!gGeoManager->cd(path)){ | |
608 | AliFatal("Geo manager can not find path \n"); | |
609 | } | |
610 | TGeoHMatrix *mPHOS = gGeoManager->GetCurrentMatrix(); | |
611 | if (mPHOS) mPHOS->MasterToLocal(posC,posL); | |
612 | else{ | |
613 | AliFatal("Geo matrixes are not loaded \n") ; | |
614 | } | |
615 | x=posL[0] ; | |
616 | z=posL[1]; | |
617 | return ; | |
618 | ||
52a36ffd | 619 | } |
91daaf24 | 620 | |
2f3366b6 | 621 | } |
aa0b9641 | 622 | |
623 | //____________________________________________________________________________ | |
624 | ||
7b51037f | 625 | void AliPHOSGeometry::GetModuleCenter(TVector3& center, |
626 | const char *det, | |
627 | Int_t module) const | |
aa0b9641 | 628 | { |
bfc17d18 | 629 | // Returns a position of the center of the CPV or EMC module |
91daaf24 | 630 | // in ideal (not misaligned) geometry |
1504ac47 | 631 | Float_t rDet = 0.; |
e77bb310 | 632 | if (strcmp(det,"CPV") == 0) rDet = GetIPtoCPVDistance (); |
633 | else if (strcmp(det,"EMC") == 0) rDet = GetIPtoCrystalSurface(); | |
351dd634 | 634 | else |
635 | AliFatal(Form("Wrong detector name %s",det)); | |
bfc17d18 | 636 | |
395f4eea | 637 | Float_t angle = GetPHOSAngle(module); // (40,20,0,-20,-40) degrees |
638 | angle *= TMath::Pi()/180; | |
639 | angle += 3*TMath::Pi()/2.; | |
7b51037f | 640 | center.SetXYZ(rDet*TMath::Cos(angle), rDet*TMath::Sin(angle), 0.); |
aa0b9641 | 641 | } |
642 | ||
643 | //____________________________________________________________________________ | |
644 | ||
7b51037f | 645 | void AliPHOSGeometry::Global2Local(TVector3& localPosition, |
646 | const TVector3& globalPosition, | |
647 | Int_t module) const | |
aa0b9641 | 648 | { |
bfc17d18 | 649 | // Transforms a global position of the rec.point to the local coordinate system |
91daaf24 | 650 | //Return to PHOS local system |
651 | Double_t posG[3]={globalPosition.X(),globalPosition.Y(),globalPosition.Z()} ; | |
652 | Double_t posL[3]={0.,0.,0.} ; | |
653 | char path[100] ; | |
654 | sprintf(path,"/ALIC_1/PHOS_%d",module) ; | |
655 | if (!gGeoManager->cd(path)){ | |
656 | AliFatal("Geo manager can not find path \n"); | |
657 | } | |
658 | TGeoHMatrix *mPHOS = gGeoManager->GetCurrentMatrix(); | |
659 | if (mPHOS) mPHOS->MasterToLocal(posG,posL); | |
660 | else{ | |
661 | AliFatal("Geo matrixes are not loaded \n") ; | |
662 | } | |
663 | localPosition.SetXYZ(posL[0],posL[1],posL[2]) ; | |
664 | ||
665 | /* | |
395f4eea | 666 | Float_t angle = GetPHOSAngle(module); // (40,20,0,-20,-40) degrees |
667 | angle *= TMath::Pi()/180; | |
668 | angle += 3*TMath::Pi()/2.; | |
7b51037f | 669 | localPosition = globalPosition; |
670 | localPosition.RotateZ(-angle); | |
91daaf24 | 671 | */ |
672 | } | |
673 | //____________________________________________________________________________ | |
674 | void AliPHOSGeometry::Local2Global(Int_t mod, Float_t x, Float_t z, | |
675 | TVector3& globalPosition) const | |
676 | { | |
677 | char path[100] ; | |
678 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",mod) ; | |
679 | if (!gGeoManager->cd(path)){ | |
680 | AliFatal("Geo manager can not find path \n"); | |
681 | } | |
682 | //calculate offset to crystal surface | |
683 | Float_t * inthermo = fGeometryEMCA->GetInnerThermoHalfSize() ; | |
684 | Float_t * strip = fGeometryEMCA->GetStripHalfSize() ; | |
685 | Float_t* splate = fGeometryEMCA->GetSupportPlateHalfSize(); | |
686 | Float_t * crystal = fGeometryEMCA->GetCrystalHalfSize() ; | |
687 | Float_t * pin = fGeometryEMCA->GetAPDHalfSize() ; | |
688 | Float_t * preamp = fGeometryEMCA->GetPreampHalfSize() ; | |
689 | Float_t dy=-inthermo[1]+strip[1]+splate[1]+crystal[1]-fGeometryEMCA->GetAirGapLed()/2.+pin[1]+preamp[1] ; | |
690 | Double_t posL[3]={x,dy,z} ; | |
691 | Double_t posG[3] ; | |
692 | TGeoHMatrix *mPHOS = gGeoManager->GetCurrentMatrix(); | |
693 | if (mPHOS) mPHOS->LocalToMaster(posL,posG); | |
694 | else{ | |
695 | AliFatal("Geo matrixes are not loaded \n") ; | |
696 | } | |
697 | globalPosition.SetXYZ(posG[0],posG[1],posG[2]) ; | |
698 | ||
699 | ||
700 | } | |
701 | //____________________________________________________________________________ | |
702 | void AliPHOSGeometry::GetIncidentVector(TVector3 &vtx, Int_t module, Float_t x,Float_t z, TVector3 &vInc) const { | |
703 | //Calculates vector pointing from vertex to current poisition in module local frame | |
704 | ||
705 | TVector3 global ; | |
706 | Local2Global(module,x,z,global) ; | |
707 | global-=vtx ; | |
708 | Global2Local(vInc,global,module) ; | |
709 | ||
aa0b9641 | 710 | } |