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b8dc484b | 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 | ||
d19b6003 | 16 | /* $Id$ */ |
17 | ||
5398f946 | 18 | /// \class AliMUONRecoCheck |
78649106 | 19 | /// Utility class to check reconstruction |
5398f946 | 20 | /// Reconstructed tracks are compared to reference tracks. |
21 | /// The reference tracks are built from AliTrackReference for the | |
22 | /// hit in chamber (0..9) and from kinematics for the vertex parameters. | |
b8dc484b | 23 | |
cc056de1 | 24 | #include "AliMUON.h" |
25 | #include "AliMUONRecoCheck.h" | |
26 | #include "AliMUONTrack.h" | |
27 | #include "AliMUONData.h" | |
28 | #include "AliMUONConstants.h" | |
b8dc484b | 29 | |
b8dc484b | 30 | #include "AliLoader.h" |
31 | #include "AliRunLoader.h" | |
b8dc484b | 32 | #include "AliHeader.h" |
b8dc484b | 33 | #include "AliStack.h" |
cc056de1 | 34 | #include "AliTrackReference.h" |
35 | #include "AliLog.h" | |
36 | ||
37 | #include <TParticle.h> | |
5b1afea0 | 38 | #include <TParticlePDG.h> |
b8dc484b | 39 | |
5398f946 | 40 | /// \cond CLASSIMP |
b8dc484b | 41 | ClassImp(AliMUONRecoCheck) |
5398f946 | 42 | /// \endcond |
b8dc484b | 43 | |
068e4c36 | 44 | //_____________________________________________________________________________ |
45 | AliMUONRecoCheck::AliMUONRecoCheck(Char_t *chLoader) | |
46 | : TObject(), | |
47 | fRunLoader(0x0), | |
48 | fMUONData(0x0), | |
49 | fMuonTrackRef(0x0), | |
50 | fTrackReco(0x0), | |
51 | fReconstructibleTracks(0), | |
52 | fRecoTracks(0), | |
53 | fIsLoadConstructor(kTRUE) | |
54 | { | |
55 | /// Constructor using "galice.root", | |
56 | /// takes care of loading/unloading Kinematics, TrackRefs and Tracks | |
57 | ||
58 | fMuonTrackRef = new TClonesArray("AliMUONTrack", 10); | |
59 | ||
60 | // run loader | |
61 | fRunLoader = AliRunLoader::Open(chLoader); | |
62 | if (!fRunLoader) { | |
63 | AliError(Form("no run loader found " )); | |
64 | return; | |
65 | } | |
66 | ||
67 | // initialize loader | |
68 | AliLoader *loader = fRunLoader->GetLoader("MUONLoader"); | |
69 | ||
70 | // container | |
71 | fMUONData = new AliMUONData(loader,"MUON","MUON"); | |
72 | if (!fMUONData) { | |
73 | AliError(Form("no MUONData found " )); | |
74 | return; | |
75 | } | |
76 | ||
77 | fRunLoader->LoadKinematics("READ"); | |
78 | fRunLoader->LoadTrackRefs("READ"); | |
79 | loader->LoadTracks("READ"); | |
80 | ||
81 | } | |
82 | ||
b8dc484b | 83 | //_____________________________________________________________________________ |
45a05f07 | 84 | AliMUONRecoCheck::AliMUONRecoCheck(AliRunLoader *runloader, AliMUONData *muondata) |
54d7ba50 | 85 | : TObject(), |
86 | fRunLoader(0x0), | |
87 | fMUONData(0x0), | |
88 | fMuonTrackRef(0x0), | |
89 | fTrackReco(0x0), | |
90 | fReconstructibleTracks(0), | |
068e4c36 | 91 | fRecoTracks(0), |
92 | fIsLoadConstructor(kFALSE) | |
b8dc484b | 93 | { |
068e4c36 | 94 | /// Constructor from AliRunLoader and AliMUONData, |
95 | /// does not load/unload Kinematics, TrackRefs and Tracks internally | |
96 | /// it should be done in the execution program (e.g. see MUONRecoCheck.C) | |
5398f946 | 97 | |
b8dc484b | 98 | fMuonTrackRef = new TClonesArray("AliMUONTrack", 10); |
99 | ||
45a05f07 | 100 | // run loader |
101 | fRunLoader = runloader; | |
b8dc484b | 102 | if (!fRunLoader) { |
45a05f07 | 103 | AliError(Form("no run loader found " )); |
b8dc484b | 104 | return; |
105 | } | |
b8dc484b | 106 | |
45a05f07 | 107 | // container |
108 | fMUONData = muondata; | |
109 | if (!fMUONData) { | |
110 | AliError(Form("no MUONData found " )); | |
111 | return; | |
112 | } | |
b8dc484b | 113 | |
b8dc484b | 114 | } |
115 | ||
45a05f07 | 116 | |
b8dc484b | 117 | //_____________________________________________________________________________ |
118 | AliMUONRecoCheck::~AliMUONRecoCheck() | |
119 | { | |
d19b6003 | 120 | /// Destructor |
b8dc484b | 121 | delete fMuonTrackRef; |
068e4c36 | 122 | if(fIsLoadConstructor){ |
123 | fRunLoader->UnloadKinematics(); | |
124 | fRunLoader->UnloadTrackRefs(); | |
125 | fRunLoader->UnloadTracks(); | |
126 | delete fMUONData; | |
fac70e25 | 127 | delete fRunLoader; |
068e4c36 | 128 | } |
b8dc484b | 129 | } |
130 | ||
131 | //_____________________________________________________________________________ | |
132 | void AliMUONRecoCheck::MakeTrackRef() | |
133 | { | |
d19b6003 | 134 | /// Make reconstructible tracks |
b8dc484b | 135 | |
136 | AliTrackReference *trackReference; | |
137 | AliMUONTrack *muonTrack; | |
138 | AliMUONTrackParam *trackParam; | |
139 | AliMUONHitForRec *hitForRec; | |
140 | Float_t x, y, z, pX, pY, pZ, pYZ; | |
141 | Int_t track, trackSave; | |
142 | TParticle *particle; | |
143 | Float_t bendingSlope = 0; | |
144 | Float_t nonBendingSlope = 0; | |
145 | Float_t inverseBendingMomentum = 0; | |
146 | ||
147 | TTree* treeTR = fRunLoader->TreeTR(); | |
148 | if (treeTR == NULL) return; | |
149 | ||
150 | TBranch* branch = treeTR->GetBranch("MUON"); | |
151 | if (branch == NULL) return; | |
152 | ||
de876dd1 | 153 | TClonesArray* trackRefs = 0; |
b8dc484b | 154 | branch->SetAddress(&trackRefs); |
de876dd1 | 155 | branch->SetAutoDelete(kTRUE); |
b8dc484b | 156 | |
de876dd1 | 157 | Int_t nTrackRef = (Int_t)branch->GetEntries(); |
b8dc484b | 158 | |
159 | track = trackSave = -999; | |
160 | Bool_t isNewTrack; | |
30d3ea8a | 161 | Int_t iHitMin, iChamber, detElemId; |
b8dc484b | 162 | |
163 | trackParam = new AliMUONTrackParam(); | |
164 | hitForRec = new AliMUONHitForRec(); | |
b8dc484b | 165 | |
5b1afea0 | 166 | Int_t charge; |
167 | TParticlePDG *ppdg; | |
168 | ||
cc056de1 | 169 | Int_t max = fRunLoader->GetHeader()->Stack()->GetNtrack(); |
b8dc484b | 170 | for (Int_t iTrackRef = 0; iTrackRef < nTrackRef; iTrackRef++) { |
cc056de1 | 171 | |
de876dd1 | 172 | branch->GetEntry(iTrackRef); |
b8dc484b | 173 | |
174 | iHitMin = 0; | |
175 | isNewTrack = kTRUE; | |
dba3c809 | 176 | |
29fc2c86 | 177 | if (!trackRefs->GetEntries()) continue; |
b8dc484b | 178 | |
29fc2c86 | 179 | while (isNewTrack) { |
068e4c36 | 180 | |
181 | muonTrack = new AliMUONTrack(); | |
182 | ||
b8dc484b | 183 | for (Int_t iHit = iHitMin; iHit < trackRefs->GetEntries(); iHit++) { |
184 | ||
185 | trackReference = (AliTrackReference*)trackRefs->At(iHit); | |
186 | x = trackReference->X(); | |
187 | y = trackReference->Y(); | |
188 | z = trackReference->Z(); | |
189 | pX = trackReference->Px(); | |
190 | pY = trackReference->Py(); | |
191 | pZ = trackReference->Pz(); | |
192 | ||
193 | track = trackReference->GetTrack(); | |
194 | ||
cc056de1 | 195 | if(track >= max){ |
196 | AliWarningStream() | |
197 | << "Track ID " << track | |
198 | << " larger than max number of particles " << max << endl; | |
199 | isNewTrack = kFALSE; | |
200 | break; | |
201 | } | |
b8dc484b | 202 | if (track != trackSave && iHit != 0) { |
203 | iHitMin = iHit; | |
204 | trackSave = track; | |
205 | break; | |
206 | } | |
207 | ||
208 | // track parameters at hit | |
209 | trackParam->SetBendingCoor(y); | |
210 | trackParam->SetNonBendingCoor(x); | |
211 | trackParam->SetZ(z); | |
cc056de1 | 212 | |
b8dc484b | 213 | if (TMath::Abs(pZ) > 0) { |
214 | bendingSlope = pY/pZ; | |
215 | nonBendingSlope = pX/pZ; | |
216 | } | |
217 | pYZ = TMath::Sqrt(pY*pY+pZ*pZ); | |
218 | if (pYZ >0) inverseBendingMomentum = 1/pYZ; | |
219 | ||
220 | trackParam->SetBendingSlope(bendingSlope); | |
221 | trackParam->SetNonBendingSlope(nonBendingSlope); | |
222 | trackParam->SetInverseBendingMomentum(inverseBendingMomentum); | |
223 | ||
224 | hitForRec->SetBendingCoor(y); | |
225 | hitForRec->SetNonBendingCoor(x); | |
226 | hitForRec->SetZ(z); | |
227 | hitForRec->SetBendingReso2(0.0); | |
30d3ea8a | 228 | hitForRec->SetNonBendingReso2(0.0); |
229 | detElemId = hitForRec->GetDetElemId(); | |
230 | if (detElemId) iChamber = detElemId / 100 - 1; | |
231 | else iChamber = AliMUONConstants::ChamberNumber(z); | |
b8dc484b | 232 | hitForRec->SetChamberNumber(iChamber); |
233 | ||
068e4c36 | 234 | muonTrack->AddTrackParamAtHit(trackParam,0); |
b8dc484b | 235 | muonTrack->AddHitForRecAtHit(hitForRec); |
236 | muonTrack->SetTrackID(track); | |
cc056de1 | 237 | |
b8dc484b | 238 | trackSave = track; |
239 | if (iHit == trackRefs->GetEntries()-1) isNewTrack = kFALSE; | |
240 | } | |
cc056de1 | 241 | |
b8dc484b | 242 | // track parameters at vertex |
243 | particle = fRunLoader->GetHeader()->Stack()->Particle(muonTrack->GetTrackID()); | |
cc056de1 | 244 | |
b8dc484b | 245 | if (particle) { |
cc056de1 | 246 | |
b8dc484b | 247 | x = particle->Vx(); |
248 | y = particle->Vy(); | |
249 | z = particle->Vz(); | |
250 | pX = particle->Px(); | |
251 | pY = particle->Py(); | |
252 | pZ = particle->Pz(); | |
253 | ||
254 | trackParam->SetBendingCoor(y); | |
c61c826b | 255 | trackParam->SetNonBendingCoor(x); |
b8dc484b | 256 | trackParam->SetZ(z); |
257 | if (TMath::Abs(pZ) > 0) { | |
258 | bendingSlope = pY/pZ; | |
259 | nonBendingSlope = pX/pZ; | |
260 | } | |
5b1afea0 | 261 | |
b8dc484b | 262 | pYZ = TMath::Sqrt(pY*pY+pZ*pZ); |
263 | if (pYZ >0) inverseBendingMomentum = 1/pYZ; | |
5b1afea0 | 264 | |
265 | ppdg = particle->GetPDG(1); | |
266 | charge = (Int_t)(ppdg->Charge()/3.0); | |
267 | inverseBendingMomentum *= charge; | |
268 | ||
b8dc484b | 269 | trackParam->SetBendingSlope(bendingSlope); |
270 | trackParam->SetNonBendingSlope(nonBendingSlope); | |
271 | trackParam->SetInverseBendingMomentum(inverseBendingMomentum); | |
272 | ||
273 | muonTrack->SetTrackParamAtVertex(trackParam); | |
274 | } | |
cc056de1 | 275 | |
b8dc484b | 276 | AddMuonTrackReference(muonTrack); |
068e4c36 | 277 | delete muonTrack; |
278 | muonTrack = NULL; | |
b8dc484b | 279 | |
280 | } // end while isNewTrack | |
b8dc484b | 281 | } |
2782bbd7 | 282 | delete trackRefs; |
b8dc484b | 283 | CleanMuonTrackRef(); |
284 | ||
285 | ReconstructibleTracks(); | |
286 | ||
b8dc484b | 287 | delete trackParam; |
288 | delete hitForRec; | |
b8dc484b | 289 | |
290 | } | |
291 | ||
292 | //____________________________________________________________________________ | |
293 | TClonesArray* AliMUONRecoCheck::GetTrackReco() | |
294 | { | |
d19b6003 | 295 | /// Return TClonesArray of reconstructed tracks |
b8dc484b | 296 | |
45a05f07 | 297 | fMUONData->ResetRecTracks(); |
298 | fMUONData->SetTreeAddress("RT"); | |
299 | fTrackReco = fMUONData->RecTracks(); | |
300 | fMUONData->GetRecTracks(); | |
b8dc484b | 301 | fRecoTracks = fTrackReco->GetEntriesFast(); |
302 | return fTrackReco; | |
303 | } | |
304 | //_____________________________________________________________________________ | |
305 | void AliMUONRecoCheck::PrintEvent() const | |
306 | { | |
d19b6003 | 307 | /// Debug facility |
b8dc484b | 308 | |
309 | AliMUONTrack *track; | |
310 | AliMUONHitForRec *hitForRec; | |
311 | TClonesArray * hitForRecAtHit = 0; | |
312 | Float_t xRec,yRec,zRec; | |
313 | ||
314 | Int_t nTrackRef = fMuonTrackRef->GetEntriesFast(); | |
315 | ||
316 | printf(" ******************************* \n"); | |
317 | printf(" nb of tracks %d \n",nTrackRef); | |
318 | ||
319 | for (Int_t index = 0; index < nTrackRef; index++) { | |
320 | track = (AliMUONTrack*)fMuonTrackRef->At(index); | |
321 | hitForRecAtHit = track->GetHitForRecAtHit(); | |
322 | Int_t nTrackHits = hitForRecAtHit->GetEntriesFast(); | |
323 | printf(" track number %d \n",index); | |
324 | for (Int_t iHit = 0; iHit < nTrackHits; iHit++){ | |
325 | hitForRec = (AliMUONHitForRec*) hitForRecAtHit->At(iHit); | |
326 | xRec = hitForRec->GetNonBendingCoor(); | |
327 | yRec = hitForRec->GetBendingCoor(); | |
328 | zRec = hitForRec->GetZ(); | |
329 | printf(" x,y,z: %f , %f , %f \n",xRec,yRec,zRec); | |
330 | } | |
331 | } | |
332 | } | |
333 | ||
334 | //_____________________________________________________________________________ | |
335 | void AliMUONRecoCheck::ResetTracks() const | |
336 | { | |
d19b6003 | 337 | /// Reset tracks |
338 | ||
2782bbd7 | 339 | if (fMuonTrackRef) fMuonTrackRef->Delete(); |
b8dc484b | 340 | } |
341 | //_____________________________________________________________________________ | |
342 | void AliMUONRecoCheck::CleanMuonTrackRef() | |
343 | { | |
d19b6003 | 344 | /// Re-calculate hits parameters because two AliTrackReferences are recorded for |
345 | /// each chamber (one when particle is entering + one when particle is leaving | |
346 | /// the sensitive volume) | |
b8dc484b | 347 | |
348 | Float_t maxGasGap = 1.; // cm | |
349 | AliMUONTrack *track, *trackNew; | |
350 | AliMUONHitForRec *hitForRec, *hitForRec1, *hitForRec2; | |
351 | AliMUONTrackParam *trackParam, *trackParam1, *trackParam2, *trackParamAtVertex; | |
352 | TClonesArray * hitForRecAtHit = 0; | |
353 | TClonesArray * trackParamAtHit = 0; | |
354 | Float_t xRec,yRec,zRec; | |
355 | Float_t xRec1,yRec1,zRec1; | |
356 | Float_t xRec2,yRec2,zRec2; | |
357 | Float_t bendingSlope,nonBendingSlope,bendingMomentum; | |
358 | Float_t bendingSlope1,nonBendingSlope1,bendingMomentum1; | |
359 | Float_t bendingSlope2,nonBendingSlope2,bendingMomentum2; | |
360 | TClonesArray *newMuonTrackRef = new TClonesArray("AliMUONTrack", 10); | |
361 | Int_t iHit1; | |
30d3ea8a | 362 | Int_t iChamber = 0, detElemId = 0; |
b8dc484b | 363 | Int_t nRec = 0; |
364 | Int_t nTrackHits = 0; | |
365 | ||
366 | hitForRec = new AliMUONHitForRec(); | |
367 | trackParam = new AliMUONTrackParam(); | |
b8dc484b | 368 | |
369 | Int_t nTrackRef = fMuonTrackRef->GetEntriesFast(); | |
b8dc484b | 370 | for (Int_t index = 0; index < nTrackRef; index++) { |
371 | track = (AliMUONTrack*)fMuonTrackRef->At(index); | |
372 | hitForRecAtHit = track->GetHitForRecAtHit(); | |
373 | trackParamAtHit = track->GetTrackParamAtHit(); | |
374 | trackParamAtVertex = track->GetTrackParamAtVertex(); | |
375 | nTrackHits = hitForRecAtHit->GetEntriesFast(); | |
068e4c36 | 376 | trackNew = new AliMUONTrack(); |
b8dc484b | 377 | iHit1 = 0; |
378 | while (iHit1 < nTrackHits) { | |
379 | hitForRec1 = (AliMUONHitForRec*) hitForRecAtHit->At(iHit1); | |
380 | trackParam1 = (AliMUONTrackParam*) trackParamAtHit->At(iHit1); | |
381 | xRec1 = hitForRec1->GetNonBendingCoor(); | |
382 | yRec1 = hitForRec1->GetBendingCoor(); | |
383 | zRec1 = hitForRec1->GetZ(); | |
384 | xRec = xRec1; | |
385 | yRec = yRec1; | |
386 | zRec = zRec1; | |
387 | bendingSlope1 = trackParam1->GetBendingSlope(); | |
388 | nonBendingSlope1 = trackParam1->GetNonBendingSlope(); | |
de876dd1 | 389 | bendingMomentum1 = 0; |
390 | if (TMath::Abs(trackParam1->GetInverseBendingMomentum()) > 0) | |
391 | bendingMomentum1 = 1./trackParam1->GetInverseBendingMomentum(); | |
b8dc484b | 392 | bendingSlope = bendingSlope1; |
393 | nonBendingSlope = nonBendingSlope1; | |
394 | bendingMomentum = bendingMomentum1; | |
395 | nRec = 1; | |
396 | for (Int_t iHit2 = iHit1+1; iHit2 < nTrackHits; iHit2++) { | |
397 | hitForRec2 = (AliMUONHitForRec*) hitForRecAtHit->At(iHit2); | |
398 | trackParam2 = (AliMUONTrackParam*) trackParamAtHit->At(iHit2); | |
399 | xRec2 = hitForRec2->GetNonBendingCoor(); | |
400 | yRec2 = hitForRec2->GetBendingCoor(); | |
401 | zRec2 = hitForRec2->GetZ(); | |
402 | bendingSlope2 = trackParam2->GetBendingSlope(); | |
403 | nonBendingSlope2 = trackParam2->GetNonBendingSlope(); | |
de876dd1 | 404 | bendingMomentum2 = 0; |
405 | if (TMath::Abs(trackParam2->GetInverseBendingMomentum()) > 0) | |
406 | bendingMomentum2 = 1./trackParam2->GetInverseBendingMomentum(); | |
b8dc484b | 407 | |
408 | if ( TMath::Abs(zRec2-zRec1) < maxGasGap ) { | |
cc056de1 | 409 | |
b8dc484b | 410 | nRec++; |
411 | xRec += xRec2; | |
412 | yRec += yRec2; | |
413 | zRec += zRec2; | |
414 | bendingSlope += bendingSlope2; | |
415 | nonBendingSlope += nonBendingSlope2; | |
416 | bendingMomentum += bendingMomentum2; | |
417 | iHit1 = iHit2; | |
418 | } | |
419 | ||
420 | } // end iHit2 | |
421 | xRec /= (Float_t)nRec; | |
422 | yRec /= (Float_t)nRec; | |
423 | zRec /= (Float_t)nRec; | |
424 | bendingSlope /= (Float_t)nRec; | |
425 | nonBendingSlope /= (Float_t)nRec; | |
426 | bendingMomentum /= (Float_t)nRec; | |
427 | ||
428 | hitForRec->SetNonBendingCoor(xRec); | |
429 | hitForRec->SetBendingCoor(yRec); | |
430 | hitForRec->SetZ(zRec); | |
30d3ea8a | 431 | detElemId = hitForRec->GetDetElemId(); |
432 | if (detElemId) iChamber = detElemId / 100 - 1; | |
433 | else iChamber = AliMUONConstants::ChamberNumber(zRec); | |
b8dc484b | 434 | hitForRec->SetChamberNumber(iChamber); |
435 | hitForRec->SetBendingReso2(0.0); | |
436 | hitForRec->SetNonBendingReso2(0.0); | |
437 | trackParam->SetNonBendingCoor(xRec); | |
438 | trackParam->SetBendingCoor(yRec); | |
439 | trackParam->SetZ(zRec); | |
440 | trackParam->SetNonBendingSlope(nonBendingSlope); | |
441 | trackParam->SetBendingSlope(bendingSlope); | |
de876dd1 | 442 | if (TMath::Abs(bendingMomentum) > 0) |
443 | trackParam->SetInverseBendingMomentum(1./bendingMomentum); | |
b8dc484b | 444 | |
445 | trackNew->AddHitForRecAtHit(hitForRec); | |
068e4c36 | 446 | trackNew->AddTrackParamAtHit(trackParam,0); |
b8dc484b | 447 | |
448 | iHit1++; | |
449 | } // end iHit1 | |
450 | ||
451 | trackNew->SetTrackID(track->GetTrackID()); | |
452 | trackNew->SetTrackParamAtVertex(trackParamAtVertex); | |
068e4c36 | 453 | {new ((*newMuonTrackRef)[newMuonTrackRef->GetEntriesFast()]) AliMUONTrack(*trackNew);} |
454 | delete trackNew; | |
455 | trackNew = NULL; | |
b8dc484b | 456 | |
457 | } // end trackRef | |
458 | ||
2782bbd7 | 459 | fMuonTrackRef->Delete(); |
b8dc484b | 460 | nTrackRef = newMuonTrackRef->GetEntriesFast(); |
461 | for (Int_t index = 0; index < nTrackRef; index++) { | |
462 | track = (AliMUONTrack*)newMuonTrackRef->At(index); | |
463 | AddMuonTrackReference(track); | |
464 | } | |
465 | ||
b8dc484b | 466 | delete hitForRec; |
467 | delete trackParam; | |
29fc2c86 | 468 | newMuonTrackRef->Delete(); |
b8dc484b | 469 | delete newMuonTrackRef; |
470 | ||
471 | } | |
472 | ||
473 | //_____________________________________________________________________________ | |
474 | void AliMUONRecoCheck::ReconstructibleTracks() | |
475 | { | |
d19b6003 | 476 | /// Calculate the number of reconstructible tracks |
b8dc484b | 477 | |
478 | AliMUONTrack* track; | |
479 | TClonesArray* hitForRecAtHit = NULL; | |
480 | AliMUONHitForRec* hitForRec; | |
481 | Float_t zRec; | |
482 | Int_t nTrackRef, nTrackHits; | |
483 | Int_t isChamberInTrack[10]; | |
484 | Int_t iChamber = 0; | |
485 | Bool_t isTrackOK = kTRUE; | |
486 | ||
487 | fReconstructibleTracks = 0; | |
488 | ||
489 | nTrackRef = fMuonTrackRef->GetEntriesFast(); | |
490 | for (Int_t index = 0; index < nTrackRef; index++) { | |
491 | track = (AliMUONTrack*)fMuonTrackRef->At(index); | |
492 | hitForRecAtHit = track->GetHitForRecAtHit(); | |
493 | nTrackHits = hitForRecAtHit->GetEntriesFast(); | |
494 | for (Int_t ch = 0; ch < 10; ch++) isChamberInTrack[ch] = 0; | |
495 | ||
496 | for ( Int_t iHit = 0; iHit < nTrackHits; iHit++) { | |
497 | hitForRec = (AliMUONHitForRec*) hitForRecAtHit->At(iHit); | |
498 | zRec = hitForRec->GetZ(); | |
499 | iChamber = hitForRec->GetChamberNumber(); | |
500 | if (iChamber < 0 || iChamber > 10) continue; | |
501 | isChamberInTrack[iChamber] = 1; | |
cc056de1 | 502 | } |
503 | // track is reconstructible if the particle is depositing a hit | |
504 | // in the following chamber combinations: | |
505 | ||
b8dc484b | 506 | isTrackOK = kTRUE; |
cc056de1 | 507 | if (!isChamberInTrack[0] && !isChamberInTrack[1]) isTrackOK = kFALSE; |
508 | if (!isChamberInTrack[2] && !isChamberInTrack[3]) isTrackOK = kFALSE; | |
509 | if (!isChamberInTrack[4] && !isChamberInTrack[5]) isTrackOK = kFALSE; | |
510 | Int_t nHitsInLastStations=0; | |
511 | for (Int_t ch = 6; ch < AliMUONConstants::NTrackingCh(); ch++) | |
512 | if (isChamberInTrack[ch]) nHitsInLastStations++; | |
513 | if(nHitsInLastStations < 3) isTrackOK = kFALSE; | |
514 | ||
515 | if (isTrackOK) fReconstructibleTracks++; | |
b8dc484b | 516 | if (!isTrackOK) fMuonTrackRef->Remove(track); // remove non reconstructible tracks |
517 | } | |
518 | fMuonTrackRef->Compress(); | |
519 | } | |
520 |