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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 | ||
16 | /* $Id: AliPHOSGeometry.cxx 25590 2008-05-06 07:09:11Z prsnko $ */ | |
17 | ||
18 | //_________________________________________________________________________ | |
19 | // Geometry class for PHOS | |
20 | // PHOS consists of the electromagnetic calorimeter (EMCA) | |
21 | // and a charged particle veto (CPV) | |
22 | // The EMCA/CPV modules are parametrized so that any configuration | |
23 | // can be easily implemented | |
24 | // The title is used to identify the version of CPV used. | |
25 | // | |
26 | // -- Author: Yves Schutz (SUBATECH) & Dmitri Peressounko (RRC "KI" & SUBATECH) | |
27 | ||
28 | // --- ROOT system --- | |
29 | ||
30 | #include "TClonesArray.h" | |
31 | #include "TVector3.h" | |
32 | #include "TParticle.h" | |
33 | #include <TGeoManager.h> | |
34 | #include <TGeoMatrix.h> | |
35 | ||
36 | // --- Standard library --- | |
37 | ||
38 | // --- AliRoot header files --- | |
39 | #include "AliLog.h" | |
40 | #include "AliPHOSEMCAGeometry.h" | |
41 | #include "AliPHOSCPVGeometry.h" | |
42 | #include "AliPHOSSupportGeometry.h" | |
43 | #include "AliPHOSGeoUtils.h" | |
44 | ||
45 | ClassImp(AliPHOSGeoUtils) | |
46 | ||
47 | //____________________________________________________________________________ | |
48 | AliPHOSGeoUtils::AliPHOSGeoUtils(): | |
49 | fGeometryEMCA(0x0),fGeometryCPV(0x0),fGeometrySUPP(0x0), | |
50 | fNModules(0),fNCristalsInModule(0),fNPhi(0),fNZ(0), | |
51 | fNumberOfCPVPadsPhi(0),fNumberOfCPVPadsZ(0), | |
52 | fNCellsXInStrip(0),fNCellsZInStrip(0),fNStripZ(0), | |
53 | fCrystalShift(0.),fCryCellShift(0.),fCryStripShift(0.),fCellStep(0.), | |
54 | fPadSizePhi(0.),fPadSizeZ(0.),fCPVBoxSizeY(0.),fMisalArray(0x0) | |
55 | ||
56 | { | |
57 | // default ctor | |
58 | // must be kept public for root persistency purposes, but should never be called by the outside world | |
59 | } | |
60 | ||
61 | //____________________________________________________________________________ | |
62 | AliPHOSGeoUtils::AliPHOSGeoUtils(const AliPHOSGeoUtils & rhs) | |
63 | : TNamed(rhs), | |
64 | fGeometryEMCA(0x0),fGeometryCPV(0x0),fGeometrySUPP(0x0), | |
65 | fNModules(0),fNCristalsInModule(0),fNPhi(0),fNZ(0), | |
66 | fNumberOfCPVPadsPhi(0),fNumberOfCPVPadsZ(0), | |
67 | fNCellsXInStrip(0),fNCellsZInStrip(0),fNStripZ(0), | |
68 | fCrystalShift(0.),fCryCellShift(0.),fCryStripShift(0.),fCellStep(0.), | |
69 | fPadSizePhi(0.),fPadSizeZ(0.),fCPVBoxSizeY(0.),fMisalArray(0x0) | |
70 | { | |
71 | Fatal("cpy ctor", "not implemented") ; | |
72 | } | |
73 | ||
74 | //____________________________________________________________________________ | |
75 | AliPHOSGeoUtils::AliPHOSGeoUtils(const Text_t* name, const Text_t* title) | |
76 | : TNamed(name, title), | |
77 | fGeometryEMCA(0x0),fGeometryCPV(0x0),fGeometrySUPP(0x0), | |
78 | fNModules(0),fNCristalsInModule(0),fNPhi(0),fNZ(0), | |
79 | fNumberOfCPVPadsPhi(0),fNumberOfCPVPadsZ(0), | |
80 | fNCellsXInStrip(0),fNCellsZInStrip(0),fNStripZ(0), | |
81 | fCrystalShift(0.),fCryCellShift(0.),fCryStripShift(0.),fCellStep(0.), | |
82 | fPadSizePhi(0.),fPadSizeZ(0.),fCPVBoxSizeY(0.),fMisalArray(0x0) | |
83 | { | |
84 | // ctor only for normal usage | |
85 | ||
86 | fGeometryEMCA = new AliPHOSEMCAGeometry() ; | |
87 | fGeometryCPV = new AliPHOSCPVGeometry() ; | |
88 | fGeometrySUPP = new AliPHOSSupportGeometry() ; | |
89 | ||
90 | fNModules = 5; | |
91 | fNPhi = fGeometryEMCA->GetNPhi() ; | |
92 | fNZ = fGeometryEMCA->GetNZ() ; | |
93 | fNCristalsInModule = fNPhi*fNZ ; | |
94 | fNCellsXInStrip= fGeometryEMCA->GetNCellsXInStrip() ; | |
95 | fNCellsZInStrip= fGeometryEMCA->GetNCellsZInStrip() ; | |
96 | fNStripZ = fGeometryEMCA->GetNStripZ() ; | |
97 | fXtlArrSize[0]=fGeometryEMCA->GetInnerThermoHalfSize()[0] ; //Wery close to the zise of the Xtl set | |
98 | fXtlArrSize[1]=fGeometryEMCA->GetInnerThermoHalfSize()[1] ; //Wery close to the zise of the Xtl set | |
99 | fXtlArrSize[2]=fGeometryEMCA->GetInnerThermoHalfSize()[2] ; //Wery close to the zise of the Xtl set | |
100 | ||
101 | //calculate offset to crystal surface | |
102 | const Float_t * inthermo = fGeometryEMCA->GetInnerThermoHalfSize() ; | |
103 | const Float_t * strip = fGeometryEMCA->GetStripHalfSize() ; | |
104 | const Float_t * splate = fGeometryEMCA->GetSupportPlateHalfSize(); | |
105 | const Float_t * crystal = fGeometryEMCA->GetCrystalHalfSize() ; | |
106 | const Float_t * pin = fGeometryEMCA->GetAPDHalfSize() ; | |
107 | const Float_t * preamp = fGeometryEMCA->GetPreampHalfSize() ; | |
108 | fCrystalShift=-inthermo[1]+strip[1]+splate[1]+crystal[1]-fGeometryEMCA->GetAirGapLed()/2.+pin[1]+preamp[1] ; | |
109 | fCryCellShift=crystal[1]-(fGeometryEMCA->GetAirGapLed()-2*pin[1]-2*preamp[1])/2; | |
110 | fCryStripShift=fCryCellShift+splate[1] ; | |
111 | fCellStep = 2.*fGeometryEMCA->GetAirCellHalfSize()[0] ; | |
112 | ||
113 | fNumberOfCPVPadsPhi = fGeometryCPV->GetNumberOfCPVPadsPhi() ; | |
114 | fNumberOfCPVPadsZ = fGeometryCPV->GetNumberOfCPVPadsZ() ; | |
115 | fPadSizePhi = fGeometryCPV->GetCPVPadSizePhi() ; | |
116 | fPadSizeZ = fGeometryCPV->GetCPVPadSizeZ() ; | |
117 | fCPVBoxSizeY= fGeometryCPV->GetCPVBoxSize(1) ; | |
118 | ||
119 | for(Int_t mod=0; mod<5; mod++){ | |
120 | fEMCMatrix[mod]=0 ; | |
121 | for(Int_t istrip=0; istrip<224; istrip++) | |
122 | fStripMatrix[mod][istrip]=0 ; | |
123 | fCPVMatrix[mod]=0; | |
124 | fPHOSMatrix[mod]=0 ; | |
125 | } | |
126 | ||
127 | } | |
128 | ||
129 | //____________________________________________________________________________ | |
130 | AliPHOSGeoUtils & AliPHOSGeoUtils::operator = (const AliPHOSGeoUtils & /*rvalue*/) { | |
131 | ||
132 | Fatal("assignment operator", "not implemented") ; | |
133 | return *this ; | |
134 | } | |
135 | ||
136 | //____________________________________________________________________________ | |
137 | AliPHOSGeoUtils::~AliPHOSGeoUtils(void) | |
138 | { | |
139 | // dtor | |
140 | if(fGeometryEMCA){ | |
141 | delete fGeometryEMCA; fGeometryEMCA = 0 ; | |
142 | } | |
143 | if(fGeometryCPV){ | |
144 | delete fGeometryCPV; fGeometryCPV=0 ; | |
145 | } | |
146 | if(fGeometrySUPP){ | |
147 | delete fGeometrySUPP ; fGeometrySUPP=0 ; | |
148 | } | |
149 | if(fMisalArray){ | |
150 | delete fMisalArray; fMisalArray=0 ; | |
151 | } | |
152 | ||
153 | for(Int_t mod=0; mod<5; mod++){ | |
154 | delete fEMCMatrix[mod] ; | |
155 | for(Int_t istrip=0; istrip<224; istrip++) | |
156 | delete fStripMatrix[mod][istrip]; | |
157 | delete fCPVMatrix[mod]; | |
158 | // delete fPHOSMatrix[mod]; | |
159 | } | |
160 | } | |
161 | //____________________________________________________________________________ | |
162 | Bool_t AliPHOSGeoUtils::AbsToRelNumbering(Int_t absId, Int_t * relid) const | |
163 | { | |
164 | // Converts the absolute numbering into the following array | |
165 | // relid[0] = PHOS Module number 1:fNModules | |
166 | // relid[1] = 0 if PbW04 | |
167 | // = -1 if CPV | |
168 | // relid[2] = Row number inside a PHOS module | |
169 | // relid[3] = Column number inside a PHOS module | |
170 | ||
171 | Float_t id = absId ; | |
172 | ||
173 | Int_t phosmodulenumber = (Int_t)TMath:: Ceil( id / fNCristalsInModule ) ; | |
174 | ||
175 | if ( phosmodulenumber > fNModules ) { // it is a CPV pad | |
176 | ||
177 | id -= fNPhi * fNZ * fNModules ; | |
178 | Float_t nCPV = fNumberOfCPVPadsPhi * fNumberOfCPVPadsZ ; | |
179 | relid[0] = (Int_t) TMath::Ceil( id / nCPV ) ; | |
180 | relid[1] = -1 ; | |
181 | id -= ( relid[0] - 1 ) * nCPV ; | |
182 | relid[2] = (Int_t) TMath::Ceil( id / fNumberOfCPVPadsZ ) ; | |
183 | relid[3] = (Int_t) ( id - ( relid[2] - 1 ) * fNumberOfCPVPadsZ ) ; | |
184 | } | |
185 | else { // it is a PW04 crystal | |
186 | ||
187 | relid[0] = phosmodulenumber ; | |
188 | relid[1] = 0 ; | |
189 | id -= ( phosmodulenumber - 1 ) * fNPhi * fNZ ; | |
190 | relid[2] = (Int_t)TMath::Ceil( id / fNZ ) ; | |
191 | relid[3] = (Int_t)( id - ( relid[2] - 1 ) * fNZ ) ; | |
192 | } | |
193 | return kTRUE ; | |
194 | } | |
195 | //____________________________________________________________________________ | |
196 | Bool_t AliPHOSGeoUtils::RelToAbsNumbering(const Int_t * relid, Int_t & absId) const | |
197 | { | |
198 | // Converts the relative numbering into the absolute numbering | |
199 | // EMCA crystals: | |
200 | // absId = from 1 to fNModules * fNPhi * fNZ | |
201 | // CPV pad: | |
202 | // absId = from N(total PHOS crystals) + 1 | |
203 | // to NCPVModules * fNumberOfCPVPadsPhi * fNumberOfCPVPadsZ | |
204 | ||
205 | if ( relid[1] == 0 ) { // it is a Phos crystal | |
206 | absId = | |
207 | ( relid[0] - 1 ) * fNPhi * fNZ // the offset of PHOS modules | |
208 | + ( relid[2] - 1 ) * fNZ // the offset along phi | |
209 | + relid[3] ; // the offset along z | |
210 | } | |
211 | else { // it is a CPV pad | |
212 | absId = fNPhi * fNZ * fNModules // the offset to separate EMCA crystals from CPV pads | |
213 | + ( relid[0] - 1 ) * fNumberOfCPVPadsPhi * fNumberOfCPVPadsZ // the pads offset of PHOS modules | |
214 | + ( relid[2] - 1 ) * fNumberOfCPVPadsZ // the pads offset of a CPV row | |
215 | + relid[3] ; // the column number | |
216 | } | |
217 | ||
218 | return kTRUE ; | |
219 | } | |
220 | ||
221 | //____________________________________________________________________________ | |
222 | void AliPHOSGeoUtils::RelPosInModule(const Int_t * relid, Float_t & x, Float_t & z) const | |
223 | { | |
224 | // Converts the relative numbering into the local PHOS-module (x, z) coordinates | |
225 | ||
226 | if(relid[1]==0){ //this is PHOS | |
227 | ||
228 | Double_t pos[3]= {0.0,-fCryCellShift,0.}; //Position incide the crystal | |
229 | Double_t posC[3]={0.0,0.0,0.}; //Global position | |
230 | ||
231 | //Shift and possibly apply misalignment corrections | |
232 | Int_t strip=1+((Int_t) TMath::Ceil((Double_t)relid[2]/fNCellsXInStrip))*fNStripZ- | |
233 | (Int_t) TMath::Ceil((Double_t)relid[3]/fNCellsZInStrip) ; | |
234 | pos[0]=((relid[2]-1)%fNCellsXInStrip-fNCellsXInStrip/2+0.5)*fCellStep ; | |
235 | pos[2]=(-(relid[3]-1)%fNCellsZInStrip+fNCellsZInStrip/2-0.5)*fCellStep ; | |
236 | ||
237 | Int_t mod = relid[0] ; | |
238 | const TGeoHMatrix * m2 = GetMatrixForStrip(mod, strip) ; | |
239 | m2->LocalToMaster(pos,posC); | |
240 | ||
241 | //Return to PHOS local system | |
242 | Double_t posL2[3]={posC[0],posC[1],posC[2]}; | |
243 | const TGeoHMatrix *mPHOS2 = GetMatrixForModule(mod) ; | |
244 | mPHOS2->MasterToLocal(posC,posL2); | |
245 | x=posL2[0] ; | |
246 | z=-posL2[2]; | |
247 | return ; | |
248 | } | |
249 | else{//CPV | |
250 | //first calculate position with respect to CPV plain | |
251 | Int_t row = relid[2] ; //offset along x axis | |
252 | Int_t column = relid[3] ; //offset along z axis | |
253 | Double_t pos[3]= {0.0,0.0,0.}; //Position incide the CPV printed circuit | |
254 | Double_t posC[3]={0.0,0.0,0.}; //Global position | |
255 | pos[0] = - ( fNumberOfCPVPadsPhi/2. - row - 0.5 ) * fPadSizePhi ; // position of pad with respect | |
256 | pos[2] = - ( fNumberOfCPVPadsZ /2. - column - 0.5 ) * fPadSizeZ ; // of center of PHOS module | |
257 | ||
258 | //now apply possible shifts and rotations | |
259 | const TGeoHMatrix *m = GetMatrixForCPV(relid[0]) ; | |
260 | m->LocalToMaster(pos,posC); | |
261 | //Return to PHOS local system | |
262 | Double_t posL[3]={0.,0.,0.,} ; | |
263 | const TGeoHMatrix *mPHOS = GetMatrixForPHOS(relid[0]) ; | |
264 | mPHOS->MasterToLocal(posC,posL); | |
265 | x=posL[0] ; | |
266 | z=posL[1]; | |
267 | return ; | |
268 | ||
269 | } | |
270 | ||
271 | } | |
272 | //____________________________________________________________________________ | |
273 | void AliPHOSGeoUtils::RelPosToAbsId(Int_t module, Double_t x, Double_t z, Int_t & absId) const | |
274 | { | |
275 | // converts local PHOS-module (x, z) coordinates to absId | |
276 | ||
277 | //Calculate AbsId using ideal geometry. Should be sufficient for primary particles calculation | |
278 | //(the only place where this method used currently) | |
279 | Int_t relid[4]={module,0,1,1} ; | |
280 | relid[2] = static_cast<Int_t>(TMath::Ceil( x/ fCellStep + fNPhi / 2.) ); | |
281 | relid[3] = fNZ+1-static_cast<Int_t>(TMath::Ceil(-z/ fCellStep + fNZ / 2.) ) ; | |
282 | if(relid[2]<1)relid[2]=1 ; | |
283 | if(relid[3]<1)relid[3]=1 ; | |
284 | if(relid[2]>fNPhi)relid[2]=fNPhi ; | |
285 | if(relid[3]>fNZ)relid[3]=fNZ ; | |
286 | RelToAbsNumbering(relid,absId) ; | |
287 | ||
288 | /* | |
289 | //find Global position | |
290 | if (!gGeoManager){ | |
291 | printf("Geo manager not initialized\n"); | |
292 | abort() ; | |
293 | } | |
294 | Double_t posL[3]={x,-fCrystalShift,-z} ; //Only for EMC!!! | |
295 | Double_t posG[3] ; | |
296 | char path[100] ; | |
297 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",module) ; | |
298 | if (!gGeoManager->cd(path)){ | |
299 | printf("Geo manager can not find path \n"); | |
300 | abort() ; | |
301 | } | |
302 | TGeoHMatrix *mPHOS = gGeoManager->GetCurrentMatrix(); | |
303 | if (mPHOS){ | |
304 | mPHOS->LocalToMaster(posL,posG); | |
305 | } | |
306 | else{ | |
307 | printf("Geo matrixes are not loaded \n") ; | |
308 | abort() ; | |
309 | } | |
310 | ||
311 | Int_t relid[4] ; | |
312 | gGeoManager->FindNode(posG[0],posG[1],posG[2]) ; | |
313 | //Check that path contains PSTR and extract strip number | |
314 | TString cpath(gGeoManager->GetPath()) ; | |
315 | Int_t indx = cpath.Index("PCEL") ; | |
316 | if(indx==-1){ //for the few events when particle hits between srips use ideal geometry | |
317 | relid[0] = module ; | |
318 | relid[1] = 0 ; | |
319 | relid[2] = static_cast<Int_t>(TMath::Ceil( x/ fCellStep + fNPhi / 2.) ); | |
320 | relid[3] = static_cast<Int_t>(TMath::Ceil(-z/ fCellStep + fNZ / 2.) ) ; | |
321 | if(relid[2]<1)relid[2]=1 ; | |
322 | if(relid[3]<1)relid[3]=1 ; | |
323 | if(relid[2]>fNPhi)relid[2]=fNPhi ; | |
324 | if(relid[3]>fNZ)relid[3]=fNZ ; | |
325 | RelToAbsNumbering(relid,absId) ; | |
326 | } | |
327 | else{ | |
328 | Int_t indx2 = cpath.Index("/",indx) ; | |
329 | if(indx2==-1) | |
330 | indx2=cpath.Length() ; | |
331 | TString cell=cpath(indx+5,indx2-indx-5) ; | |
332 | Int_t icell=cell.Atoi() ; | |
333 | indx = cpath.Index("PSTR") ; | |
334 | indx2 = cpath.Index("/",indx) ; | |
335 | TString strip=cpath(indx+5,indx2-indx-5) ; | |
336 | Int_t iStrip = strip.Atoi() ; | |
337 | ||
338 | Int_t row = fNStripZ - (iStrip - 1) % (fNStripZ) ; | |
339 | Int_t col = (Int_t) TMath::Ceil((Double_t) iStrip/(fNStripZ)) -1 ; | |
340 | ||
341 | // Absid for 8x2-strips. Looks nice :) | |
342 | absId = (module-1)*fNCristalsInModule + | |
343 | row * 2 + (col*fNCellsXInStrip + (icell - 1) / 2)*fNZ - (icell & 1 ? 1 : 0); | |
344 | ||
345 | } | |
346 | */ | |
347 | ||
348 | } | |
349 | ||
350 | //____________________________________________________________________________ | |
351 | void AliPHOSGeoUtils::RelPosToRelId(Int_t module, Double_t x, Double_t z, Int_t * relId) const | |
352 | { | |
353 | //Evaluates RelId of the crystall with given coordinates | |
354 | ||
355 | Int_t absId ; | |
356 | RelPosToAbsId(module, x,z,absId) ; | |
357 | AbsToRelNumbering(absId,relId) ; | |
358 | } | |
359 | ||
360 | //____________________________________________________________________________ | |
361 | void AliPHOSGeoUtils::RelPosInAlice(Int_t id, TVector3 & pos ) const | |
362 | { | |
363 | // Converts the absolute numbering into the global ALICE coordinate system | |
364 | ||
365 | if (!gGeoManager){ | |
366 | printf("Geo manager not initialized\n"); | |
367 | abort(); | |
368 | } | |
369 | ||
370 | Int_t relid[4] ; | |
371 | ||
372 | AbsToRelNumbering(id , relid) ; | |
373 | ||
374 | //construct module name | |
375 | if(relid[1]==0){ //this is EMC | |
376 | ||
377 | Double_t ps[3]= {0.0,-fCryStripShift,0.}; //Position incide the crystal | |
378 | Double_t psC[3]={0.0,0.0,0.}; //Global position | |
379 | ||
380 | //Shift and possibly apply misalignment corrections | |
381 | Int_t strip=1+((Int_t) TMath::Ceil((Double_t)relid[2]/fNCellsXInStrip))*fNStripZ- | |
382 | (Int_t) TMath::Ceil((Double_t)relid[3]/fNCellsZInStrip) ; | |
383 | ps[0]=((relid[2]-1)%fNCellsXInStrip-fNCellsXInStrip/2+0.5)*fCellStep ; | |
384 | ps[2]=(-(relid[3]-1)%fNCellsZInStrip+fNCellsZInStrip/2-0.5)*fCellStep ; | |
385 | ||
386 | Int_t mod = relid[0] ; | |
387 | const TGeoHMatrix * m2 = GetMatrixForStrip(mod, strip) ; | |
388 | m2->LocalToMaster(ps,psC); | |
389 | pos.SetXYZ(psC[0],psC[1],psC[2]) ; | |
390 | ||
391 | } | |
392 | else{ | |
393 | //first calculate position with respect to CPV plain | |
394 | Int_t row = relid[2] ; //offset along x axis | |
395 | Int_t column = relid[3] ; //offset along z axis | |
396 | Double_t ps[3]= {0.0,fCPVBoxSizeY/2.,0.}; //Position on top of CPV | |
397 | Double_t psC[3]={0.0,0.0,0.}; //Global position | |
398 | pos[0] = - ( fNumberOfCPVPadsPhi/2. - row - 0.5 ) * fPadSizePhi ; // position of pad with respect | |
399 | pos[2] = - ( fNumberOfCPVPadsZ /2. - column - 0.5 ) * fPadSizeZ ; // of center of PHOS module | |
400 | ||
401 | //now apply possible shifts and rotations | |
402 | const TGeoHMatrix *m = GetMatrixForCPV(relid[0]) ; | |
403 | m->LocalToMaster(ps,psC); | |
404 | pos.SetXYZ(psC[0],psC[1],-psC[2]) ; | |
405 | } | |
406 | } | |
407 | ||
408 | //____________________________________________________________________________ | |
409 | void AliPHOSGeoUtils::Local2Global(Int_t mod, Float_t x, Float_t z, | |
410 | TVector3& globalPosition) const | |
411 | { | |
412 | Double_t posL[3]={x,-fCrystalShift,-z} ; //Only for EMC!!! | |
413 | Double_t posG[3] ; | |
414 | const TGeoHMatrix *mPHOS = GetMatrixForModule(mod) ; | |
415 | mPHOS->LocalToMaster(posL,posG); | |
416 | globalPosition.SetXYZ(posG[0],posG[1],posG[2]) ; | |
417 | } | |
418 | //____________________________________________________________________________ | |
419 | void AliPHOSGeoUtils::Global2Local(TVector3& localPosition, | |
420 | const TVector3& globalPosition, | |
421 | Int_t module) const | |
422 | { | |
423 | // Transforms a global position to the local coordinate system | |
424 | // of the module | |
425 | //Return to PHOS local system | |
426 | Double_t posG[3]={globalPosition.X(),globalPosition.Y(),globalPosition.Z()} ; | |
427 | Double_t posL[3]={0.,0.,0.} ; | |
428 | const TGeoHMatrix *mPHOS = GetMatrixForModule(module) ; | |
429 | if(mPHOS){ | |
430 | mPHOS->MasterToLocal(posG,posL); | |
431 | localPosition.SetXYZ(posL[0],posL[1]+fCrystalShift,-posL[2]) ; | |
432 | } | |
433 | else{ | |
434 | localPosition.SetXYZ(999.,999.,999.) ; //module does not exist in given configuration | |
435 | } | |
436 | ||
437 | } | |
438 | //____________________________________________________________________________ | |
439 | Bool_t AliPHOSGeoUtils::GlobalPos2RelId(TVector3 & global, Int_t * relId){ | |
440 | //Converts position in global ALICE coordinates to relId | |
441 | //returns false if x,z coordinates are beyond PHOS | |
442 | //distande to PHOS surface is NOT calculated | |
443 | TVector3 loc ; | |
444 | for(Int_t mod=1; mod<=fNModules; mod++){ | |
445 | Global2Local(loc,global,mod) ; | |
446 | //If in Acceptance | |
447 | if((TMath::Abs(loc.Z())<fXtlArrSize[2]) && (TMath::Abs(loc.X())<fXtlArrSize[0])){ | |
448 | RelPosToRelId(mod,loc.X(),loc.Z(),relId); | |
449 | return kTRUE ; | |
450 | } | |
451 | } | |
452 | return kFALSE ; | |
453 | ||
454 | } | |
455 | //____________________________________________________________________________ | |
456 | Bool_t AliPHOSGeoUtils::ImpactOnEmc(const TParticle * particle, | |
457 | Int_t & moduleNumber, Double_t & z, Double_t & x) const | |
458 | { | |
459 | // Tells if a particle enters PHOS and evaluates hit position | |
460 | Double_t vtx[3]={particle->Vx(),particle->Vy(),particle->Vz()} ; | |
461 | return ImpactOnEmc(vtx,particle->Theta(),particle->Phi(),moduleNumber,z,x); | |
462 | } | |
463 | ||
464 | //____________________________________________________________________________ | |
465 | Bool_t AliPHOSGeoUtils::ImpactOnEmc(const Double_t * vtx, Double_t theta, Double_t phi, | |
466 | Int_t & moduleNumber, Double_t & z, Double_t & x) const | |
467 | { | |
468 | // calculates the impact coordinates on PHOS of a neutral particle | |
469 | // emitted in the vertex vtx[3] with direction vec(p) in the ALICE global coordinate system | |
470 | TVector3 p(TMath::Sin(theta)*TMath::Cos(phi),TMath::Sin(theta)*TMath::Sin(phi),TMath::Cos(theta)) ; | |
471 | return ImpactOnEmc(vtx,p,moduleNumber,z,x) ; | |
472 | ||
473 | } | |
474 | //____________________________________________________________________________ | |
475 | Bool_t AliPHOSGeoUtils::ImpactOnEmc(const Double_t * vtx, const TVector3 &p, | |
476 | Int_t & moduleNumber, Double_t & z, Double_t & x) const | |
477 | { | |
478 | // calculates the impact coordinates on PHOS of a neutral particle | |
479 | // emitted in the vertex vtx[3] with direction theta and phi in the ALICE global coordinate system | |
480 | TVector3 v(vtx[0],vtx[1],vtx[2]) ; | |
481 | ||
482 | for(Int_t imod=1; imod<=fNModules ; imod++){ | |
483 | //create vector from (0,0,0) to center of crystal surface of imod module | |
484 | Double_t tmp[3]={0.,-fCrystalShift,0.} ; | |
485 | ||
486 | const TGeoHMatrix *m = GetMatrixForModule(imod) ; | |
487 | if(!m) //module does not exist in given configuration | |
488 | continue ; | |
489 | Double_t posG[3]={0.,0.,0.} ; | |
490 | m->LocalToMaster(tmp,posG); | |
491 | TVector3 n(posG[0],posG[1],posG[2]) ; | |
492 | Double_t direction=n.Dot(p) ; | |
493 | if(direction<=0.) | |
494 | continue ; //momentum directed FROM module | |
495 | Double_t fr = (n.Mag2()-n.Dot(v))/direction ; | |
496 | //Calculate direction in module plain | |
497 | n-=v+fr*p ; | |
498 | n*=-1. ; | |
499 | if(TMath::Abs(TMath::Abs(n.Z())<fXtlArrSize[2]) && n.Pt()<fXtlArrSize[0]){ | |
500 | moduleNumber = imod ; | |
501 | z=n.Z() ; | |
502 | x=TMath::Sign(n.Pt(),n.X()) ; | |
503 | //no need to return to local system since we calcilated distance from module center | |
504 | //and tilts can not be significant. | |
505 | return kTRUE ; | |
506 | } | |
507 | } | |
508 | //Not in acceptance | |
509 | x=0; z=0 ; | |
510 | moduleNumber=0 ; | |
511 | return kFALSE ; | |
512 | ||
513 | } | |
514 | //____________________________________________________________________________ | |
515 | void AliPHOSGeoUtils::GetIncidentVector(const TVector3 &vtx, Int_t module, Float_t x,Float_t z, TVector3 &vInc) const { | |
516 | //Calculates vector pointing from vertex to current poisition in module local frame | |
517 | //Note that PHOS local system and ALICE global have opposite z directions | |
518 | ||
519 | Global2Local(vInc,vtx,module) ; | |
520 | vInc.SetXYZ(vInc.X()+x,vInc.Y(),vInc.Z()+z) ; | |
521 | } | |
522 | //____________________________________________________________________________ | |
523 | const TGeoHMatrix * AliPHOSGeoUtils::GetMatrixForModule(Int_t mod)const { | |
524 | //Provides shift-rotation matrix for module mod | |
525 | ||
526 | //If GeoManager exists, take matrixes from it | |
527 | if(gGeoManager){ | |
528 | char path[255] ; | |
529 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",mod) ; | |
530 | // sprintf(path,"/ALIC_1/PHOS_%d",relid[0]) ; | |
531 | if (!gGeoManager->cd(path)){ | |
532 | AliWarning(Form("Geo manager can not find path %s \n",path)); | |
533 | return 0; | |
534 | } | |
535 | return gGeoManager->GetCurrentMatrix(); | |
536 | } | |
537 | if(fEMCMatrix[mod-1]){ | |
538 | return fEMCMatrix[mod-1] ; | |
539 | } | |
540 | else{ | |
541 | AliWarning("Can not find PHOS misalignment matrixes\n") ; | |
542 | AliWarning("Either import TGeoManager from geometry.root or \n"); | |
543 | AliWarning("read stored matrixes from AliESD Header: \n") ; | |
544 | AliWarning("AliPHOSGeoUtils::SetMisalMatrixes(header->GetPHOSMisalMatrix()) \n") ; | |
545 | return 0 ; | |
546 | } | |
547 | return 0 ; | |
548 | } | |
549 | //____________________________________________________________________________ | |
550 | const TGeoHMatrix * AliPHOSGeoUtils::GetMatrixForStrip(Int_t mod, Int_t strip)const { | |
551 | //Provides shift-rotation matrix for strip unit of the module mod | |
552 | ||
553 | //If GeoManager exists, take matrixes from it | |
554 | if(gGeoManager){ | |
555 | char path[255] ; | |
556 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1/PSTR_%d",mod,strip) ; | |
557 | if (!gGeoManager->cd(path)){ | |
558 | AliWarning(Form("Geo manager can not find path %s \n",path)); | |
559 | return 0 ; | |
560 | } | |
561 | return gGeoManager->GetCurrentMatrix(); | |
562 | } | |
563 | if(fStripMatrix[mod-1][strip-1]){ | |
564 | return fStripMatrix[mod-1][strip-1] ; | |
565 | } | |
566 | else{ | |
567 | AliWarning("Can not find PHOS misalignment matrixes\n") ; | |
568 | AliWarning("Either import TGeoManager from geometry.root or \n"); | |
569 | AliWarning("read stored matrixes from AliESD Header: \n") ; | |
570 | AliWarning("AliPHOSGeoUtils::SetMisalMatrixes(header->GetPHOSMisalMatrix()) \n") ; | |
571 | return 0 ; | |
572 | } | |
573 | return 0 ; | |
574 | } | |
575 | //____________________________________________________________________________ | |
576 | const TGeoHMatrix * AliPHOSGeoUtils::GetMatrixForCPV(Int_t mod)const { | |
577 | //Provides shift-rotation matrix for CPV of the module mod | |
578 | ||
579 | //If GeoManager exists, take matrixes from it | |
580 | if(gGeoManager){ | |
581 | char path[255] ; | |
582 | //now apply possible shifts and rotations | |
583 | sprintf(path,"/ALIC_1/PHOS_%d/PCPV_1",mod) ; | |
584 | if (!gGeoManager->cd(path)){ | |
585 | AliWarning(Form("Geo manager can not find path %s \n",path)); | |
586 | return 0 ; | |
587 | } | |
588 | return gGeoManager->GetCurrentMatrix(); | |
589 | } | |
590 | if(fCPVMatrix[mod-1]){ | |
591 | return fCPVMatrix[mod-1] ; | |
592 | } | |
593 | else{ | |
594 | AliWarning("Can not find PHOS misalignment matrixes\n") ; | |
595 | AliWarning("Either import TGeoManager from geometry.root or \n"); | |
596 | AliWarning("read stored matrixes from AliESD Header: \n") ; | |
597 | AliWarning("AliPHOSGeoUtils::SetMisalMatrixes(header->GetPHOSMisalMatrix()) \n") ; | |
598 | return 0 ; | |
599 | } | |
600 | return 0 ; | |
601 | } | |
602 | //____________________________________________________________________________ | |
603 | const TGeoHMatrix * AliPHOSGeoUtils::GetMatrixForPHOS(Int_t mod)const { | |
604 | //Provides shift-rotation matrix for PHOS (EMC+CPV) | |
605 | ||
606 | //If GeoManager exists, take matrixes from it | |
607 | if(gGeoManager){ | |
608 | char path[255] ; | |
609 | sprintf(path,"/ALIC_1/PHOS_%d",mod) ; | |
610 | if (!gGeoManager->cd(path)){ | |
611 | AliWarning(Form("Geo manager can not find path %s \n",path)); | |
612 | return 0 ; | |
613 | } | |
614 | return gGeoManager->GetCurrentMatrix(); | |
615 | } | |
616 | if(fPHOSMatrix[mod-1]){ | |
617 | return fPHOSMatrix[mod-1] ; | |
618 | } | |
619 | else{ | |
620 | AliWarning("Can not find PHOS misalignment matrixes\n") ; | |
621 | AliWarning("Either import TGeoManager from geometry.root or \n"); | |
622 | AliWarning("read stored matrixes from AliESD Header: \n") ; | |
623 | AliWarning("AliPHOSGeoUtils::SetMisalMatrixes(header->GetPHOSMisalMatrix()) \n") ; | |
624 | return 0 ; | |
625 | } | |
626 | return 0 ; | |
627 | } | |
628 | //____________________________________________________________________________ | |
629 | void AliPHOSGeoUtils::SetMisalMatrix(const TGeoHMatrix * m, Int_t mod){ | |
630 | //Fills pointers to geo matrixes | |
631 | ||
632 | fPHOSMatrix[mod]=m ; | |
633 | ||
634 | //If module does not exist, make sure all its matrices are zero | |
635 | if(m==NULL){ | |
636 | fEMCMatrix[mod]=NULL ; | |
637 | Int_t istrip=0 ; | |
638 | for(Int_t irow = 0; irow < fGeometryEMCA->GetNStripX(); irow ++){ | |
639 | for(Int_t icol = 0; icol < fGeometryEMCA->GetNStripZ(); icol ++){ | |
640 | fStripMatrix[mod][istrip]=NULL ; | |
641 | } | |
642 | } | |
643 | fCPVMatrix[mod]=NULL ; | |
644 | return ; | |
645 | } | |
646 | ||
647 | //Calculate maxtrices for PTII | |
648 | if(!fMisalArray) | |
649 | fMisalArray = new TClonesArray("TGeoHMatrix",1120+10) ; | |
650 | Int_t nr = fMisalArray->GetEntriesFast() ; | |
651 | Double_t rotEMC[9]={1.,0.,0.,0.,0.,-1.,0.,1.,0.} ; | |
652 | const Float_t * inthermo = fGeometryEMCA->GetInnerThermoHalfSize() ; | |
653 | const Float_t * strip = fGeometryEMCA->GetStripHalfSize() ; | |
654 | const Float_t * covparams = fGeometryEMCA->GetAlCoverParams() ; | |
655 | const Float_t * warmcov = fGeometryEMCA->GetWarmAlCoverHalfSize() ; | |
656 | Float_t z = fGeometryCPV->GetCPVBoxSize(1) / 2. - warmcov[2] + covparams[3]-inthermo[1] ; | |
657 | Double_t locTII[3]={0.,0.,z} ; | |
658 | Double_t globTII[3] ; | |
659 | ||
660 | if (fEMCMatrix[mod] == NULL) | |
661 | fEMCMatrix[mod] = new((*fMisalArray)[nr])TGeoHMatrix() ; | |
662 | nr++ ; | |
663 | fEMCMatrix[mod]->SetRotation(rotEMC) ; | |
664 | fEMCMatrix[mod]->MultiplyLeft(fPHOSMatrix[mod]) ; | |
665 | fPHOSMatrix[mod]->LocalToMaster(locTII,globTII) ; | |
666 | fEMCMatrix[mod]->SetTranslation(globTII) ; | |
667 | ||
668 | //Now calculate ideal matrixes for strip misalignment. | |
669 | //For the moment we can not store them in ESDHeader | |
670 | ||
671 | Double_t loc[3]={0.,inthermo[1] - strip[1],0.} ; | |
672 | Double_t glob[3] ; | |
673 | ||
674 | Int_t istrip=0 ; | |
675 | for(Int_t irow = 0; irow < fGeometryEMCA->GetNStripX(); irow ++){ | |
676 | loc[0] = (2*irow + 1 - fGeometryEMCA->GetNStripX())* strip[0] ; | |
677 | for(Int_t icol = 0; icol < fGeometryEMCA->GetNStripZ(); icol ++){ | |
678 | loc[2] = (2*icol + 1 - fGeometryEMCA->GetNStripZ()) * strip[2] ; | |
679 | fEMCMatrix[mod]->LocalToMaster(loc,glob) ; | |
680 | if (fStripMatrix[mod][istrip] == NULL) | |
681 | fStripMatrix[mod][istrip] = new((*fMisalArray)[nr])TGeoHMatrix(*(fEMCMatrix[mod])) ; //Use same rotation as PHOS module | |
682 | nr++ ; | |
683 | fStripMatrix[mod][istrip]->SetTranslation(glob) ; | |
684 | istrip++; | |
685 | } | |
686 | } | |
687 | ||
688 | //Now calculate CPV matrixes | |
689 | const Float_t * emcParams = fGeometryEMCA->GetEMCParams() ; | |
690 | Double_t globCPV[3] ; | |
691 | Double_t locCPV[3]={0.,0.,- emcParams[3]} ; | |
692 | Double_t rot[9]={1.,0.,0.,0.,0.,1.,0.,-1.,0.} ; | |
693 | ||
694 | if (fCPVMatrix[mod] == NULL) | |
695 | fCPVMatrix[mod] = new((*fMisalArray)[nr])TGeoHMatrix() ; | |
696 | nr++ ; | |
697 | fCPVMatrix[mod]->SetRotation(rot) ; | |
698 | fCPVMatrix[mod]->MultiplyLeft(fPHOSMatrix[mod]) ; | |
699 | fCPVMatrix[mod]->ReflectY(kFALSE) ; | |
700 | fPHOSMatrix[mod]->LocalToMaster(locCPV,globCPV) ; | |
701 | fCPVMatrix[mod]->SetTranslation(globCPV) ; | |
702 | ||
703 | } | |
704 |