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70a0fabe | 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 : singleton | |
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. | |
26 | // | |
27 | // -- Author: Yves Schutz (SUBATECH) & Dmitri Peressounko (RRC "KI" & SUBATECH) | |
28 | ||
29 | // --- ROOT system --- | |
30 | ||
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 "AliPHOSEMCAGeometry.h" | |
40 | #include "AliPHOSCPVGeometry.h" | |
bcc9e89e | 41 | #include "AliPHOSSupportGeometry.h" |
70a0fabe | 42 | #include "AliPHOSGeoUtils.h" |
43 | ||
44 | ClassImp(AliPHOSGeoUtils) | |
45 | ||
46 | //____________________________________________________________________________ | |
47 | AliPHOSGeoUtils::AliPHOSGeoUtils(): | |
bcc9e89e | 48 | fGeometryEMCA(0x0),fGeometryCPV(0x0),fGeometrySUPP(0x0), |
70a0fabe | 49 | fNModules(0),fNCristalsInModule(0),fNPhi(0),fNZ(0), |
50 | fNumberOfCPVPadsPhi(0),fNumberOfCPVPadsZ(0), | |
51 | fNCellsXInStrip(0),fNCellsZInStrip(0),fNStripZ(0), | |
52 | fCrystalShift(0.),fCryCellShift(0.),fCellStep(0.), | |
53 | fPadSizePhi(0.),fPadSizeZ(0.),fCPVBoxSizeY(0.) | |
54 | ||
55 | { | |
56 | // default ctor | |
57 | // must be kept public for root persistency purposes, but should never be called by the outside world | |
58 | } | |
59 | ||
60 | //____________________________________________________________________________ | |
61 | AliPHOSGeoUtils::AliPHOSGeoUtils(const AliPHOSGeoUtils & rhs) | |
62 | : TNamed(rhs), | |
bcc9e89e | 63 | fGeometryEMCA(0x0),fGeometryCPV(0x0),fGeometrySUPP(0x0), |
70a0fabe | 64 | fNModules(0),fNCristalsInModule(0),fNPhi(0),fNZ(0), |
65 | fNumberOfCPVPadsPhi(0),fNumberOfCPVPadsZ(0), | |
66 | fNCellsXInStrip(0),fNCellsZInStrip(0),fNStripZ(0), | |
67 | fCrystalShift(0.),fCryCellShift(0.),fCellStep(0.), | |
68 | fPadSizePhi(0.),fPadSizeZ(0.),fCPVBoxSizeY(0.) | |
69 | { | |
70 | Fatal("cpy ctor", "not implemented") ; | |
71 | } | |
72 | ||
73 | //____________________________________________________________________________ | |
74 | AliPHOSGeoUtils::AliPHOSGeoUtils(const Text_t* name, const Text_t* title) | |
75 | : TNamed(name, title), | |
bcc9e89e | 76 | fGeometryEMCA(0x0),fGeometryCPV(0x0),fGeometrySUPP(0x0), |
70a0fabe | 77 | fNModules(0),fNCristalsInModule(0),fNPhi(0),fNZ(0), |
78 | fNumberOfCPVPadsPhi(0),fNumberOfCPVPadsZ(0), | |
79 | fNCellsXInStrip(0),fNCellsZInStrip(0),fNStripZ(0), | |
80 | fCrystalShift(0.),fCryCellShift(0.),fCellStep(0.), | |
81 | fPadSizePhi(0.),fPadSizeZ(0.),fCPVBoxSizeY(0.) | |
82 | { | |
83 | // ctor only for normal usage | |
bcc9e89e | 84 | |
85 | fGeometryEMCA = new AliPHOSEMCAGeometry() ; | |
86 | fGeometryCPV = new AliPHOSCPVGeometry() ; | |
87 | fGeometrySUPP = new AliPHOSSupportGeometry() ; | |
88 | ||
89 | fNModules = 5; | |
90 | fNPhi = fGeometryEMCA->GetNPhi() ; | |
91 | fNZ = fGeometryEMCA->GetNZ() ; | |
92 | fNCristalsInModule = fNPhi*fNZ ; | |
93 | fNCellsXInStrip= fGeometryEMCA->GetNCellsXInStrip() ; | |
94 | fNCellsZInStrip= fGeometryEMCA->GetNCellsZInStrip() ; | |
95 | fNStripZ = fGeometryEMCA->GetNStripZ() ; | |
96 | fXtlArrSize[0]=fGeometryEMCA->GetInnerThermoHalfSize()[0] ; //Wery close to the zise of the Xtl set | |
97 | fXtlArrSize[1]=fGeometryEMCA->GetInnerThermoHalfSize()[1] ; //Wery close to the zise of the Xtl set | |
98 | fXtlArrSize[2]=fGeometryEMCA->GetInnerThermoHalfSize()[2] ; //Wery close to the zise of the Xtl set | |
99 | ||
100 | //calculate offset to crystal surface | |
101 | Float_t * inthermo = fGeometryEMCA->GetInnerThermoHalfSize() ; | |
102 | Float_t * strip = fGeometryEMCA->GetStripHalfSize() ; | |
103 | Float_t* splate = fGeometryEMCA->GetSupportPlateHalfSize(); | |
104 | Float_t * crystal = fGeometryEMCA->GetCrystalHalfSize() ; | |
105 | Float_t * pin = fGeometryEMCA->GetAPDHalfSize() ; | |
106 | Float_t * preamp = fGeometryEMCA->GetPreampHalfSize() ; | |
107 | fCrystalShift=-inthermo[1]+strip[1]+splate[1]+crystal[1]-fGeometryEMCA->GetAirGapLed()/2.+pin[1]+preamp[1] ; | |
108 | fCryCellShift=crystal[1]-(fGeometryEMCA->GetAirGapLed()-2*pin[1]-2*preamp[1])/2; | |
109 | fCellStep = 2.*fGeometryEMCA->GetAirCellHalfSize()[0] ; | |
110 | ||
111 | ||
112 | fNumberOfCPVPadsPhi = fGeometryCPV->GetNumberOfCPVPadsPhi() ; | |
113 | fNumberOfCPVPadsZ = fGeometryCPV->GetNumberOfCPVPadsZ() ; | |
114 | fPadSizePhi = fGeometryCPV->GetCPVPadSizePhi() ; | |
115 | fPadSizeZ = fGeometryCPV->GetCPVPadSizeZ() ; | |
116 | fCPVBoxSizeY= fGeometryCPV->GetCPVBoxSize(1) ; | |
70a0fabe | 117 | } |
118 | ||
119 | //____________________________________________________________________________ | |
120 | AliPHOSGeoUtils & AliPHOSGeoUtils::operator = (const AliPHOSGeoUtils & /*rvalue*/) { | |
bcc9e89e | 121 | |
122 | Fatal("assignment operator", "not implemented") ; | |
70a0fabe | 123 | return *this ; |
124 | } | |
125 | ||
126 | //____________________________________________________________________________ | |
127 | AliPHOSGeoUtils::~AliPHOSGeoUtils(void) | |
128 | { | |
129 | // dtor | |
bcc9e89e | 130 | if(fGeometryEMCA){ |
131 | delete fGeometryEMCA; fGeometryEMCA = 0 ; | |
132 | } | |
133 | if(fGeometryCPV){ | |
134 | delete fGeometryCPV; fGeometryCPV=0 ; | |
135 | } | |
136 | if(fGeometrySUPP){ | |
137 | delete fGeometrySUPP ; fGeometrySUPP=0 ; | |
138 | } | |
139 | ||
70a0fabe | 140 | } |
141 | //____________________________________________________________________________ | |
142 | Bool_t AliPHOSGeoUtils::AbsToRelNumbering(Int_t absId, Int_t * relid) const | |
143 | { | |
144 | // Converts the absolute numbering into the following array | |
145 | // relid[0] = PHOS Module number 1:fNModules | |
146 | // relid[1] = 0 if PbW04 | |
147 | // = -1 if CPV | |
148 | // relid[2] = Row number inside a PHOS module | |
149 | // relid[3] = Column number inside a PHOS module | |
150 | ||
151 | Float_t id = absId ; | |
152 | ||
153 | Int_t phosmodulenumber = (Int_t)TMath:: Ceil( id / fNCristalsInModule ) ; | |
154 | ||
155 | if ( phosmodulenumber > fNModules ) { // it is a CPV pad | |
156 | ||
157 | id -= fNPhi * fNZ * fNModules ; | |
158 | Float_t nCPV = fNumberOfCPVPadsPhi * fNumberOfCPVPadsZ ; | |
159 | relid[0] = (Int_t) TMath::Ceil( id / nCPV ) ; | |
160 | relid[1] = -1 ; | |
161 | id -= ( relid[0] - 1 ) * nCPV ; | |
162 | relid[2] = (Int_t) TMath::Ceil( id / fNumberOfCPVPadsZ ) ; | |
163 | relid[3] = (Int_t) ( id - ( relid[2] - 1 ) * fNumberOfCPVPadsZ ) ; | |
164 | } | |
165 | else { // it is a PW04 crystal | |
166 | ||
167 | relid[0] = phosmodulenumber ; | |
168 | relid[1] = 0 ; | |
169 | id -= ( phosmodulenumber - 1 ) * fNPhi * fNZ ; | |
170 | relid[2] = (Int_t)TMath::Ceil( id / fNZ ) ; | |
171 | relid[3] = (Int_t)( id - ( relid[2] - 1 ) * fNZ ) ; | |
172 | } | |
173 | return kTRUE ; | |
174 | } | |
175 | //____________________________________________________________________________ | |
176 | Bool_t AliPHOSGeoUtils::RelToAbsNumbering(const Int_t * relid, Int_t & absId) const | |
177 | { | |
178 | // Converts the relative numbering into the absolute numbering | |
179 | // EMCA crystals: | |
180 | // absId = from 1 to fNModules * fNPhi * fNZ | |
181 | // CPV pad: | |
182 | // absId = from N(total PHOS crystals) + 1 | |
183 | // to NCPVModules * fNumberOfCPVPadsPhi * fNumberOfCPVPadsZ | |
184 | ||
185 | if ( relid[1] == 0 ) { // it is a Phos crystal | |
186 | absId = | |
187 | ( relid[0] - 1 ) * fNPhi * fNZ // the offset of PHOS modules | |
188 | + ( relid[2] - 1 ) * fNZ // the offset along phi | |
189 | + relid[3] ; // the offset along z | |
190 | } | |
191 | else { // it is a CPV pad | |
192 | absId = fNPhi * fNZ * fNModules // the offset to separate EMCA crystals from CPV pads | |
193 | + ( relid[0] - 1 ) * fNumberOfCPVPadsPhi * fNumberOfCPVPadsZ // the pads offset of PHOS modules | |
194 | + ( relid[2] - 1 ) * fNumberOfCPVPadsZ // the pads offset of a CPV row | |
195 | + relid[3] ; // the column number | |
196 | } | |
197 | ||
198 | return kTRUE ; | |
199 | } | |
200 | ||
201 | //____________________________________________________________________________ | |
202 | void AliPHOSGeoUtils::RelPosInModule(const Int_t * relid, Float_t & x, Float_t & z) const | |
203 | { | |
204 | // Converts the relative numbering into the local PHOS-module (x, z) coordinates | |
205 | ||
206 | if (!gGeoManager){ | |
207 | printf("Geo manager not initialized\n"); | |
208 | abort() ; | |
209 | } | |
210 | //construct module name | |
211 | char path[100] ; | |
212 | if(relid[1]==0){ //this is PHOS | |
213 | ||
214 | Double_t pos[3]= {0.0,-fCryCellShift,0.}; //Position incide the crystal | |
215 | Double_t posC[3]={0.0,0.0,0.}; //Global position | |
216 | ||
217 | //Shift and possibly apply misalignment corrections | |
218 | Int_t strip=1+((Int_t) TMath::Ceil((Double_t)relid[2]/fNCellsXInStrip))*fNStripZ- | |
219 | (Int_t) TMath::Ceil((Double_t)relid[3]/fNCellsZInStrip) ; | |
220 | Int_t cellraw= relid[3]%fNCellsZInStrip ; | |
221 | if(cellraw==0)cellraw=fNCellsZInStrip ; | |
222 | Int_t cell= ((relid[2]-1)%fNCellsXInStrip)*fNCellsZInStrip + cellraw ; | |
223 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1/PSTR_%d/PCEL_%d", | |
224 | relid[0],strip,cell) ; | |
225 | if (!gGeoManager->cd(path)){ | |
226 | printf("Geo manager can not find path \n"); | |
227 | abort() ; | |
228 | } | |
229 | TGeoHMatrix *m = gGeoManager->GetCurrentMatrix(); | |
230 | if (m) m->LocalToMaster(pos,posC); | |
231 | else{ | |
232 | printf("Geo matrixes are not loaded \n") ; | |
233 | abort() ; | |
234 | } | |
235 | //Return to PHOS local system | |
236 | Double_t posL[3]={posC[0],posC[1],posC[2]}; | |
237 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",relid[0]) ; | |
238 | // sprintf(path,"/ALIC_1/PHOS_%d",relid[0]) ; | |
239 | if (!gGeoManager->cd(path)){ | |
240 | printf("Geo manager can not find path \n"); | |
241 | abort(); | |
242 | } | |
243 | TGeoHMatrix *mPHOS = gGeoManager->GetCurrentMatrix(); | |
244 | if (mPHOS) mPHOS->MasterToLocal(posC,posL); | |
245 | else{ | |
246 | printf("Geo matrixes are not loaded \n") ; | |
247 | abort() ; | |
248 | } | |
249 | x=posL[0] ; | |
250 | z=-posL[2]; | |
251 | return ; | |
252 | } | |
253 | else{//CPV | |
254 | //first calculate position with respect to CPV plain | |
255 | Int_t row = relid[2] ; //offset along x axis | |
256 | Int_t column = relid[3] ; //offset along z axis | |
257 | Double_t pos[3]= {0.0,0.0,0.}; //Position incide the CPV printed circuit | |
258 | Double_t posC[3]={0.0,0.0,0.}; //Global position | |
259 | pos[0] = - ( fNumberOfCPVPadsPhi/2. - row - 0.5 ) * fPadSizePhi ; // position of pad with respect | |
260 | pos[2] = - ( fNumberOfCPVPadsZ /2. - column - 0.5 ) * fPadSizeZ ; // of center of PHOS module | |
261 | ||
262 | //now apply possible shifts and rotations | |
263 | sprintf(path,"/ALIC_1/PHOS_%d/PCPV_1",relid[0]) ; | |
264 | if (!gGeoManager->cd(path)){ | |
265 | printf("Geo manager can not find path \n"); | |
266 | abort() ; | |
267 | } | |
268 | TGeoHMatrix *m = gGeoManager->GetCurrentMatrix(); | |
269 | if (m) m->LocalToMaster(pos,posC); | |
270 | else{ | |
271 | printf("Geo matrixes are not loaded \n") ; | |
272 | abort() ; | |
273 | } | |
274 | //Return to PHOS local system | |
275 | Double_t posL[3]={0.,0.,0.,} ; | |
276 | sprintf(path,"/ALIC_1/PHOS_%d",relid[0]) ; | |
277 | if (!gGeoManager->cd(path)){ | |
278 | printf("Geo manager can not find path \n"); | |
279 | abort() ; | |
280 | } | |
281 | TGeoHMatrix *mPHOS = gGeoManager->GetCurrentMatrix(); | |
282 | if (mPHOS) mPHOS->MasterToLocal(posC,posL); | |
283 | else{ | |
284 | printf("Geo matrixes are not loaded \n") ; | |
285 | abort() ; | |
286 | } | |
287 | x=posL[0] ; | |
288 | z=posL[1]; | |
289 | return ; | |
290 | ||
291 | } | |
292 | ||
293 | } | |
294 | //____________________________________________________________________________ | |
295 | void AliPHOSGeoUtils::RelPosToAbsId(Int_t module, Double_t x, Double_t z, Int_t & absId) const | |
296 | { | |
297 | // converts local PHOS-module (x, z) coordinates to absId | |
298 | ||
299 | //find Global position | |
300 | if (!gGeoManager){ | |
301 | printf("Geo manager not initialized\n"); | |
302 | abort() ; | |
303 | } | |
304 | Double_t posL[3]={x,-fCrystalShift,-z} ; //Only for EMC!!! | |
305 | Double_t posG[3] ; | |
306 | char path[100] ; | |
307 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",module) ; | |
308 | if (!gGeoManager->cd(path)){ | |
309 | printf("Geo manager can not find path \n"); | |
310 | abort() ; | |
311 | } | |
312 | TGeoHMatrix *mPHOS = gGeoManager->GetCurrentMatrix(); | |
313 | if (mPHOS){ | |
314 | mPHOS->LocalToMaster(posL,posG); | |
315 | } | |
316 | else{ | |
317 | printf("Geo matrixes are not loaded \n") ; | |
318 | abort() ; | |
319 | } | |
320 | ||
321 | Int_t relid[4] ; | |
322 | gGeoManager->FindNode(posG[0],posG[1],posG[2]) ; | |
323 | //Check that path contains PSTR and extract strip number | |
324 | TString cpath(gGeoManager->GetPath()) ; | |
325 | Int_t indx = cpath.Index("PCEL") ; | |
326 | if(indx==-1){ //for the few events when particle hits between srips use ideal geometry | |
327 | relid[0] = module ; | |
328 | relid[1] = 0 ; | |
329 | relid[2] = static_cast<Int_t>(TMath::Ceil( x/ fCellStep + fNPhi / 2.) ); | |
330 | relid[3] = static_cast<Int_t>(TMath::Ceil(-z/ fCellStep + fNZ / 2.) ) ; | |
331 | if(relid[2]<1)relid[2]=1 ; | |
332 | if(relid[3]<1)relid[3]=1 ; | |
333 | if(relid[2]>fNPhi)relid[2]=fNPhi ; | |
334 | if(relid[3]>fNZ)relid[3]=fNZ ; | |
335 | RelToAbsNumbering(relid,absId) ; | |
336 | } | |
337 | else{ | |
338 | Int_t indx2 = cpath.Index("/",indx) ; | |
339 | if(indx2==-1) | |
340 | indx2=cpath.Length() ; | |
341 | TString cell=cpath(indx+5,indx2-indx-5) ; | |
342 | Int_t icell=cell.Atoi() ; | |
343 | indx = cpath.Index("PSTR") ; | |
344 | indx2 = cpath.Index("/",indx) ; | |
345 | TString strip=cpath(indx+5,indx2-indx-5) ; | |
346 | Int_t iStrip = strip.Atoi() ; | |
347 | ||
348 | Int_t row = fNStripZ - (iStrip - 1) % (fNStripZ) ; | |
349 | Int_t col = (Int_t) TMath::Ceil((Double_t) iStrip/(fNStripZ)) -1 ; | |
350 | ||
351 | // Absid for 8x2-strips. Looks nice :) | |
352 | absId = (module-1)*fNCristalsInModule + | |
353 | row * 2 + (col*fNCellsXInStrip + (icell - 1) / 2)*fNZ - (icell & 1 ? 1 : 0); | |
354 | ||
355 | } | |
356 | ||
357 | } | |
358 | ||
359 | //____________________________________________________________________________ | |
360 | void AliPHOSGeoUtils::RelPosToRelId(Int_t module, Double_t x, Double_t z, Int_t * relId) const | |
361 | { | |
362 | //Evaluates RelId of the crystall with given coordinates | |
363 | ||
364 | Int_t absId ; | |
365 | RelPosToAbsId(module, x,z,absId) ; | |
366 | AbsToRelNumbering(absId,relId) ; | |
367 | } | |
368 | ||
369 | //____________________________________________________________________________ | |
370 | void AliPHOSGeoUtils::RelPosInAlice(Int_t id, TVector3 & pos ) const | |
371 | { | |
372 | // Converts the absolute numbering into the global ALICE coordinate system | |
373 | ||
374 | if (!gGeoManager){ | |
375 | printf("Geo manager not initialized\n"); | |
376 | abort(); | |
377 | } | |
378 | ||
379 | Int_t relid[4] ; | |
380 | ||
381 | AbsToRelNumbering(id , relid) ; | |
382 | ||
383 | //construct module name | |
384 | char path[100] ; | |
385 | if(relid[1]==0){ //this is EMC | |
386 | ||
387 | Double_t ps[3]= {0.0,-fCryCellShift,0.}; //Position incide the crystal | |
388 | Double_t psC[3]={0.0,0.0,0.}; //Global position | |
389 | ||
390 | //Shift and possibly apply misalignment corrections | |
391 | Int_t strip=1+((Int_t) TMath::Ceil((Double_t)relid[2]/fNCellsXInStrip))*fNStripZ- | |
392 | (Int_t) TMath::Ceil((Double_t)relid[3]/fNCellsZInStrip) ; | |
393 | Int_t cellraw= relid[3]%fNCellsZInStrip ; | |
394 | if(cellraw==0)cellraw=fNCellsZInStrip ; | |
395 | Int_t cell= ((relid[2]-1)%fNCellsXInStrip)*fNCellsZInStrip + cellraw ; | |
396 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1/PSTR_%d/PCEL_%d", | |
397 | relid[0],strip,cell) ; | |
398 | if (!gGeoManager->cd(path)){ | |
399 | printf("Geo manager can not find path \n"); | |
400 | abort() ; | |
401 | } | |
402 | TGeoHMatrix *m = gGeoManager->GetCurrentMatrix(); | |
403 | if (m) m->LocalToMaster(ps,psC); | |
404 | else{ | |
405 | printf("Geo matrixes are not loaded \n") ; | |
406 | abort() ; | |
407 | } | |
408 | pos.SetXYZ(psC[0],psC[1],psC[2]) ; | |
409 | } | |
410 | else{ | |
411 | //first calculate position with respect to CPV plain | |
412 | Int_t row = relid[2] ; //offset along x axis | |
413 | Int_t column = relid[3] ; //offset along z axis | |
414 | Double_t ps[3]= {0.0,fCPVBoxSizeY/2.,0.}; //Position on top of CPV | |
415 | Double_t psC[3]={0.0,0.0,0.}; //Global position | |
416 | pos[0] = - ( fNumberOfCPVPadsPhi/2. - row - 0.5 ) * fPadSizePhi ; // position of pad with respect | |
417 | pos[2] = - ( fNumberOfCPVPadsZ /2. - column - 0.5 ) * fPadSizeZ ; // of center of PHOS module | |
418 | ||
419 | //now apply possible shifts and rotations | |
420 | sprintf(path,"/ALIC_1/PHOS_%d/PCPV_1",relid[0]) ; | |
421 | if (!gGeoManager->cd(path)){ | |
422 | printf("Geo manager can not find path \n"); | |
423 | abort(); | |
424 | } | |
425 | TGeoHMatrix *m = gGeoManager->GetCurrentMatrix(); | |
426 | if (m) m->LocalToMaster(ps,psC); | |
427 | else{ | |
428 | printf("Geo matrixes are not loaded \n") ; | |
429 | abort() ; | |
430 | } | |
431 | pos.SetXYZ(psC[0],psC[1],-psC[2]) ; | |
432 | } | |
433 | } | |
434 | ||
435 | //____________________________________________________________________________ | |
436 | void AliPHOSGeoUtils::Local2Global(Int_t mod, Float_t x, Float_t z, | |
437 | TVector3& globalPosition) const | |
438 | { | |
439 | char path[100] ; | |
440 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",mod) ; | |
441 | if (!gGeoManager->cd(path)){ | |
442 | printf("Geo manager can not find path \n"); | |
443 | abort() ; | |
444 | } | |
445 | Double_t posL[3]={x,-fCrystalShift,-z} ; //Only for EMC!!! | |
446 | Double_t posG[3] ; | |
447 | TGeoHMatrix *mPHOS = gGeoManager->GetCurrentMatrix(); | |
448 | if (mPHOS){ | |
449 | mPHOS->LocalToMaster(posL,posG); | |
450 | } | |
451 | else{ | |
452 | printf("Geo matrixes are not loaded \n") ; | |
453 | abort() ; | |
454 | } | |
455 | globalPosition.SetXYZ(posG[0],posG[1],posG[2]) ; | |
456 | } | |
457 | //____________________________________________________________________________ | |
458 | void AliPHOSGeoUtils::Global2Local(TVector3& localPosition, | |
459 | const TVector3& globalPosition, | |
460 | Int_t module) const | |
461 | { | |
462 | // Transforms a global position to the local coordinate system | |
463 | // of the module | |
464 | //Return to PHOS local system | |
465 | Double_t posG[3]={globalPosition.X(),globalPosition.Y(),globalPosition.Z()} ; | |
466 | Double_t posL[3]={0.,0.,0.} ; | |
467 | char path[100] ; | |
468 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",module) ; | |
469 | if (!gGeoManager->cd(path)){ | |
470 | printf("Geo manager can not find path \n"); | |
471 | abort() ; | |
472 | } | |
473 | TGeoHMatrix *mPHOS = gGeoManager->GetCurrentMatrix(); | |
474 | if (mPHOS) mPHOS->MasterToLocal(posG,posL); | |
475 | else{ | |
476 | printf("Geo matrixes are not loaded \n") ; | |
477 | abort() ; | |
478 | } | |
479 | localPosition.SetXYZ(posL[0],posL[1]+fCrystalShift,-posL[2]) ; | |
480 | ||
f4aea312 | 481 | } |
482 | //____________________________________________________________________________ | |
483 | Bool_t AliPHOSGeoUtils::GlobalPos2RelId(TVector3 & global, Int_t * relId){ | |
484 | //Converts position in global ALICE coordinates to relId | |
485 | //returns false if x,z coordinates are beyond PHOS | |
486 | //distande to PHOS surface is NOT calculated | |
487 | TVector3 loc ; | |
488 | for(Int_t mod=1; mod<fNModules; mod++){ | |
489 | Global2Local(loc,global,mod) ; | |
490 | //If in Acceptance | |
491 | if((TMath::Abs(loc.Z())<fXtlArrSize[2]) && (TMath::Abs(loc.X())<fXtlArrSize[0])){ | |
492 | RelPosToRelId(mod,loc.X(),loc.Z(),relId); | |
493 | return kTRUE ; | |
494 | } | |
495 | } | |
496 | return kFALSE ; | |
497 | ||
70a0fabe | 498 | } |
499 | //____________________________________________________________________________ | |
500 | Bool_t AliPHOSGeoUtils::ImpactOnEmc(const TParticle * particle, | |
501 | Int_t & moduleNumber, Double_t & z, Double_t & x) const | |
502 | { | |
503 | // Tells if a particle enters PHOS and evaluates hit position | |
504 | Double_t vtx[3]={particle->Vx(),particle->Vy(),particle->Vz()} ; | |
505 | return ImpactOnEmc(vtx,particle->Theta(),particle->Phi(),moduleNumber,z,x); | |
506 | } | |
507 | ||
508 | //____________________________________________________________________________ | |
509 | Bool_t AliPHOSGeoUtils::ImpactOnEmc(const Double_t * vtx, Double_t theta, Double_t phi, | |
510 | Int_t & moduleNumber, Double_t & z, Double_t & x) const | |
511 | { | |
512 | // calculates the impact coordinates on PHOS of a neutral particle | |
513 | // emitted in the vertex vtx[3] with direction vec(p) in the ALICE global coordinate system | |
514 | TVector3 p(TMath::Sin(theta)*TMath::Cos(phi),TMath::Sin(theta)*TMath::Sin(phi),TMath::Cos(theta)) ; | |
515 | return ImpactOnEmc(vtx,p,moduleNumber,z,x) ; | |
516 | ||
517 | } | |
518 | //____________________________________________________________________________ | |
519 | Bool_t AliPHOSGeoUtils::ImpactOnEmc(const Double_t * vtx, const TVector3 &p, | |
520 | Int_t & moduleNumber, Double_t & z, Double_t & x) const | |
521 | { | |
522 | // calculates the impact coordinates on PHOS of a neutral particle | |
523 | // emitted in the vertex vtx[3] with direction theta and phi in the ALICE global coordinate system | |
524 | TVector3 v(vtx[0],vtx[1],vtx[2]) ; | |
525 | ||
526 | if (!gGeoManager){ | |
527 | printf("Geo manager not initialized\n"); | |
528 | abort() ; | |
529 | return kFALSE ; | |
530 | } | |
531 | ||
532 | for(Int_t imod=1; imod<=fNModules ; imod++){ | |
533 | //create vector from (0,0,0) to center of crystal surface of imod module | |
534 | Double_t tmp[3]={0.,-fCrystalShift,0.} ; | |
535 | ||
536 | char path[100] ; | |
537 | sprintf(path,"/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1",imod) ; | |
e4cc2ca1 | 538 | if (!gGeoManager->cd(path)){ //Module does not present |
539 | continue ; | |
70a0fabe | 540 | } |
541 | TGeoHMatrix *m = gGeoManager->GetCurrentMatrix(); | |
542 | Double_t posG[3]={0.,0.,0.} ; | |
543 | if (m) m->LocalToMaster(tmp,posG); | |
544 | TVector3 n(posG[0],posG[1],posG[2]) ; | |
545 | Double_t direction=n.Dot(p) ; | |
546 | if(direction<=0.) | |
547 | continue ; //momentum directed FROM module | |
548 | Double_t fr = (n.Mag2()-n.Dot(v))/direction ; | |
549 | //Calculate direction in module plain | |
550 | n-=v+fr*p ; | |
551 | n*=-1. ; | |
552 | if(TMath::Abs(TMath::Abs(n.Z())<fXtlArrSize[2]) && n.Pt()<fXtlArrSize[0]){ | |
553 | moduleNumber = imod ; | |
554 | z=n.Z() ; | |
555 | x=TMath::Sign(n.Pt(),n.X()) ; | |
556 | //no need to return to local system since we calcilated distance from module center | |
557 | //and tilts can not be significant. | |
558 | return kTRUE ; | |
559 | } | |
560 | } | |
561 | //Not in acceptance | |
562 | x=0; z=0 ; | |
563 | moduleNumber=0 ; | |
564 | return kFALSE ; | |
565 | ||
566 | } | |
70a0fabe | 567 | //____________________________________________________________________________ |
bcc9e89e | 568 | void AliPHOSGeoUtils::GetIncidentVector(const TVector3 &vtx, Int_t module, Float_t x,Float_t z, TVector3 &vInc) const { |
569 | //Calculates vector pointing from vertex to current poisition in module local frame | |
570 | //Note that PHOS local system and ALICE global have opposite z directions | |
70a0fabe | 571 | |
bcc9e89e | 572 | Global2Local(vInc,vtx,module) ; |
573 | vInc.SetXYZ(vInc.X()+x,vInc.Y(),vInc.Z()+z) ; | |
70a0fabe | 574 | } |
bcc9e89e | 575 |