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b8dc484b | 1 | /************************************************************************** |
48217459 | 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 | **************************************************************************/ | |
b8dc484b | 15 | |
d19b6003 | 16 | /* $Id$ */ |
17 | ||
3d1463c8 | 18 | //----------------------------------------------------------------------------- |
5398f946 | 19 | /// \class AliMUONRecoCheck |
78649106 | 20 | /// Utility class to check reconstruction |
5398f946 | 21 | /// Reconstructed tracks are compared to reference tracks. |
22 | /// The reference tracks are built from AliTrackReference for the | |
23 | /// hit in chamber (0..9) and from kinematics for the vertex parameters. | |
3d1463c8 | 24 | //----------------------------------------------------------------------------- |
b8dc484b | 25 | |
9bdda5f6 | 26 | // 13 Nov 2007: |
27 | // Added a method to create a list of reconstructed AliMUONTrack objects from | |
28 | // ESD data. This is necessary since the track objects that are actually created | |
29 | // during offline reconstruction are no longer stored to disk. | |
30 | // - Artur Szostak <artursz@iafrica.com> | |
103e6575 | 31 | // 25 Jan 2008: |
32 | // Use the new ESDInterface to create MUON objects from ESD data | |
33 | // - Philippe Pillot | |
7c29acf1 | 34 | // |
9bdda5f6 | 35 | |
cc056de1 | 36 | #include "AliMUONRecoCheck.h" |
37 | #include "AliMUONTrack.h" | |
103e6575 | 38 | #include "AliMUONVTrackStore.h" |
39 | #include "AliMUONVCluster.h" | |
40 | #include "AliMUONVClusterStore.h" | |
cc056de1 | 41 | #include "AliMUONConstants.h" |
103e6575 | 42 | #include "AliMUONESDInterface.h" |
933daf4c | 43 | #include "AliMUONTrackParam.h" |
96ebe67e | 44 | #include "AliMCEventHandler.h" |
45 | #include "AliMCEvent.h" | |
b8dc484b | 46 | #include "AliStack.h" |
cc056de1 | 47 | #include "AliTrackReference.h" |
9bdda5f6 | 48 | #include "AliLog.h" |
49 | #include "AliESDEvent.h" | |
50 | #include "AliESDMuonTrack.h" | |
96ebe67e | 51 | |
61fed964 | 52 | #include <TFile.h> |
53 | #include <TTree.h> | |
cc056de1 | 54 | #include <TParticle.h> |
5b1afea0 | 55 | #include <TParticlePDG.h> |
96ebe67e | 56 | #include <Riostream.h> |
57 | ||
5398f946 | 58 | /// \cond CLASSIMP |
b8dc484b | 59 | ClassImp(AliMUONRecoCheck) |
5398f946 | 60 | /// \endcond |
b8dc484b | 61 | |
068e4c36 | 62 | //_____________________________________________________________________________ |
1f2d22de | 63 | AliMUONRecoCheck::AliMUONRecoCheck(const Char_t *esdFileName, const Char_t *pathSim) |
48217459 | 64 | : TObject(), |
96ebe67e | 65 | fMCEventHandler(new AliMCEventHandler()), |
61fed964 | 66 | fESDEvent(new AliESDEvent()), |
67 | fESDTree (0x0), | |
68 | fESDFile (0x0), | |
96ebe67e | 69 | fCurrentEvent(0), |
70 | fTrackRefStore(0x0), | |
71 | fRecoTrackRefStore(0x0), | |
7c29acf1 | 72 | fRecoTrackStore(0x0), |
73 | fESDEventOwner(kTRUE) | |
068e4c36 | 74 | { |
48217459 | 75 | /// Normal ctor |
61fed964 | 76 | |
77 | // TrackRefs and Particules | |
96ebe67e | 78 | fMCEventHandler->SetInputPath(pathSim); |
79 | fMCEventHandler->InitIO(""); | |
61fed964 | 80 | |
81 | // ESD MUON Tracks | |
82 | fESDFile = TFile::Open(esdFileName); // open the file | |
83 | if (!fESDFile || !fESDFile->IsOpen()) { | |
84 | AliError(Form("opening ESD file %s failed", esdFileName)); | |
85 | fESDFile = 0x0; | |
86 | return; | |
87 | } | |
88 | fESDTree = (TTree*) fESDFile->Get("esdTree"); // get the tree | |
89 | if (!fESDTree) { | |
90 | AliError("no ESD tree found"); | |
91 | fESDFile->Close(); | |
92 | fESDFile = 0x0; | |
93 | return; | |
94 | } | |
95 | fESDEvent->ReadFromTree(fESDTree); // link fESDEvent to the tree | |
068e4c36 | 96 | } |
97 | ||
7c29acf1 | 98 | //_____________________________________________________________________________ |
99 | AliMUONRecoCheck::AliMUONRecoCheck(AliESDEvent *esdEvent, AliMCEventHandler *mcEventHandler) | |
100 | : TObject(), | |
101 | fMCEventHandler(0), | |
102 | fESDEvent(0), | |
103 | fESDTree (0x0), | |
104 | fESDFile (0x0), | |
105 | fCurrentEvent(0), | |
106 | fTrackRefStore(0x0), | |
107 | fRecoTrackRefStore(0x0), | |
108 | fRecoTrackStore(0x0), | |
109 | fESDEventOwner(kFALSE) | |
110 | { | |
111 | /// Normal ctor | |
112 | ||
113 | // TrackRefs and Particules | |
114 | fMCEventHandler = mcEventHandler; | |
115 | ||
116 | // ESD MUON Tracks | |
117 | fESDEvent = esdEvent; | |
118 | ||
119 | } | |
120 | ||
b8dc484b | 121 | //_____________________________________________________________________________ |
48217459 | 122 | AliMUONRecoCheck::~AliMUONRecoCheck() |
b8dc484b | 123 | { |
48217459 | 124 | /// Destructor |
7c29acf1 | 125 | if (fESDEventOwner) { |
126 | delete fMCEventHandler; | |
127 | delete fESDEvent; | |
128 | if (fESDFile) fESDFile->Close(); | |
129 | } | |
96ebe67e | 130 | ResetStores(); |
131 | } | |
132 | ||
133 | //_____________________________________________________________________________ | |
134 | void AliMUONRecoCheck::ResetStores() | |
135 | { | |
136 | /// Deletes all the store objects that have been created and resets the pointers to 0x0 | |
137 | delete fTrackRefStore; fTrackRefStore = 0x0; | |
138 | delete fRecoTrackRefStore; fRecoTrackRefStore = 0x0; | |
139 | delete fRecoTrackStore; fRecoTrackStore = 0x0; | |
140 | } | |
141 | ||
a99c3449 | 142 | //_____________________________________________________________________________ |
143 | Int_t AliMUONRecoCheck::GetRunNumber() | |
144 | { | |
145 | /// Return the run number of the current ESD event | |
146 | ||
147 | if (fESDEventOwner && fRecoTrackStore == 0x0) { | |
148 | if (!fESDTree || fESDTree->GetEvent(fCurrentEvent) <= 0) { | |
149 | AliError(Form("fails to read ESD object for event %d: cannot get the run number",fCurrentEvent)); | |
150 | return -1; | |
151 | } | |
152 | } | |
153 | ||
154 | return fESDEvent->GetRunNumber(); | |
155 | } | |
156 | ||
96ebe67e | 157 | //_____________________________________________________________________________ |
158 | Int_t AliMUONRecoCheck::NumberOfEvents() const | |
159 | { | |
160 | /// Return the number of events | |
7c29acf1 | 161 | if (fESDEventOwner && fESDTree) return fESDTree->GetEntries(); |
96ebe67e | 162 | return 0; |
b8dc484b | 163 | } |
164 | ||
48217459 | 165 | //_____________________________________________________________________________ |
a99c3449 | 166 | AliMUONVTrackStore* AliMUONRecoCheck::ReconstructedTracks(Int_t event, Bool_t refit) |
48217459 | 167 | { |
61fed964 | 168 | /// Return a track store containing the reconstructed tracks (converted into |
a99c3449 | 169 | /// MUONTrack objects) for a given event. |
170 | /// Track parameters at each clusters are computed or not depending on the flag "refit". | |
171 | /// If not, only the track parameters at first cluster are valid. | |
7c29acf1 | 172 | |
173 | if (!fESDEventOwner) { | |
a99c3449 | 174 | if (fRecoTrackStore == 0x0) MakeReconstructedTracks(refit); |
7c29acf1 | 175 | return fRecoTrackStore; |
176 | } | |
177 | ||
96ebe67e | 178 | if (event != fCurrentEvent) { |
179 | ResetStores(); | |
180 | fCurrentEvent = event; | |
181 | } | |
182 | ||
183 | if (fRecoTrackStore != 0x0) return fRecoTrackStore; | |
61fed964 | 184 | else { |
185 | if (!fESDTree) return 0x0; | |
186 | if (fESDTree->GetEvent(event) <= 0) { | |
187 | AliError(Form("fails to read ESD object for event %d", event)); | |
188 | return 0x0; | |
9bdda5f6 | 189 | } |
a99c3449 | 190 | MakeReconstructedTracks(refit); |
61fed964 | 191 | return fRecoTrackStore; |
9bdda5f6 | 192 | } |
9bdda5f6 | 193 | } |
194 | ||
195 | //_____________________________________________________________________________ | |
96ebe67e | 196 | AliMUONVTrackStore* AliMUONRecoCheck::TrackRefs(Int_t event) |
b8dc484b | 197 | { |
48217459 | 198 | /// Return a track store containing the track references (converted into |
199 | /// MUONTrack objects) for a given event | |
7c29acf1 | 200 | |
201 | if (!fESDEventOwner) { | |
a99c3449 | 202 | if (fTrackRefStore == 0x0) MakeTrackRefs(); |
7c29acf1 | 203 | return fTrackRefStore; |
204 | } | |
205 | ||
96ebe67e | 206 | if (event != fCurrentEvent) { |
207 | ResetStores(); | |
208 | fCurrentEvent = event; | |
209 | } | |
210 | ||
211 | if (fTrackRefStore != 0x0) return fTrackRefStore; | |
212 | else { | |
61fed964 | 213 | if (!fMCEventHandler->GetEvent(event)) { |
214 | AliError(Form("fails to read MC objects for event %d", event)); | |
215 | return 0x0; | |
216 | } | |
96ebe67e | 217 | MakeTrackRefs(); |
218 | return fTrackRefStore; | |
219 | } | |
b8dc484b | 220 | } |
221 | ||
222 | //_____________________________________________________________________________ | |
96ebe67e | 223 | AliMUONVTrackStore* AliMUONRecoCheck::ReconstructibleTracks(Int_t event) |
b8dc484b | 224 | { |
48217459 | 225 | /// Return a track store containing the reconstructible tracks for a given event |
7c29acf1 | 226 | |
227 | if (!fESDEventOwner) { | |
a99c3449 | 228 | if (fRecoTrackRefStore == 0x0) { |
229 | if (TrackRefs(event) == 0x0) return 0x0; | |
230 | MakeReconstructibleTracks(); | |
231 | } | |
7c29acf1 | 232 | return fRecoTrackRefStore; |
233 | } | |
234 | ||
96ebe67e | 235 | if (event != fCurrentEvent) { |
236 | ResetStores(); | |
237 | fCurrentEvent = event; | |
238 | } | |
239 | ||
240 | if (fRecoTrackRefStore != 0x0) return fRecoTrackRefStore; | |
241 | else { | |
242 | if (TrackRefs(event) == 0x0) return 0x0; | |
243 | MakeReconstructibleTracks(); | |
244 | return fRecoTrackRefStore; | |
245 | } | |
48217459 | 246 | } |
b8dc484b | 247 | |
61fed964 | 248 | //_____________________________________________________________________________ |
a99c3449 | 249 | void AliMUONRecoCheck::MakeReconstructedTracks(Bool_t refit) |
61fed964 | 250 | { |
251 | /// Make reconstructed tracks | |
103e6575 | 252 | if (!(fRecoTrackStore = AliMUONESDInterface::NewTrackStore())) return; |
61fed964 | 253 | |
b1fea02e | 254 | // loop over all reconstructed tracks and add them to the store (skip ghosts) |
103e6575 | 255 | Int_t nTracks = (Int_t) fESDEvent->GetNumberOfMuonTracks(); |
b1fea02e | 256 | for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) { |
257 | AliESDMuonTrack* esdTrack = fESDEvent->GetMuonTrack(iTrack); | |
a99c3449 | 258 | if (esdTrack->ContainTrackerData()) AliMUONESDInterface::Add(*esdTrack, *fRecoTrackStore, refit); |
b1fea02e | 259 | } |
61fed964 | 260 | |
261 | } | |
262 | ||
48217459 | 263 | //_____________________________________________________________________________ |
96ebe67e | 264 | void AliMUONRecoCheck::MakeTrackRefs() |
48217459 | 265 | { |
266 | /// Make reconstructible tracks | |
103e6575 | 267 | AliMUONVTrackStore *tmpTrackRefStore = AliMUONESDInterface::NewTrackStore(); |
268 | if (!tmpTrackRefStore) return; | |
48217459 | 269 | |
96ebe67e | 270 | Double_t x, y, z, pX, pY, pZ, bendingSlope, nonBendingSlope, inverseBendingMomentum; |
271 | TParticle* particle; | |
272 | TClonesArray* trackRefs; | |
273 | Int_t nTrackRef = fMCEventHandler->MCEvent()->GetNumberOfTracks(); | |
103e6575 | 274 | AliMUONVClusterStore* cStore = AliMUONESDInterface::NewClusterStore(); |
275 | if (!cStore) return; | |
276 | AliMUONVCluster* hit = cStore->CreateCluster(0,0,0); | |
b8dc484b | 277 | |
96ebe67e | 278 | // loop over simulated tracks |
279 | for (Int_t iTrackRef = 0; iTrackRef < nTrackRef; ++iTrackRef) { | |
280 | Int_t nHits = fMCEventHandler->GetParticleAndTR(iTrackRef, particle, trackRefs); | |
48217459 | 281 | |
96ebe67e | 282 | // skip empty trackRefs |
283 | if (nHits < 1) continue; | |
284 | ||
61fed964 | 285 | // get the particle charge for further calculation |
286 | TParticlePDG* ppdg = particle->GetPDG(); | |
46df197d | 287 | Int_t charge = ppdg != NULL ? (Int_t)(ppdg->Charge()/3.0) : 0; |
96ebe67e | 288 | |
61fed964 | 289 | AliMUONTrack track; |
48217459 | 290 | |
96ebe67e | 291 | // loop over simulated track hits |
292 | for (Int_t iHit = 0; iHit < nHits; ++iHit) { | |
293 | AliTrackReference* trackReference = static_cast<AliTrackReference*>(trackRefs->UncheckedAt(iHit)); | |
068e4c36 | 294 | |
61fed964 | 295 | // skip trackRefs not in MUON |
296 | if (trackReference->DetectorId() != AliTrackReference::kMUON) continue; | |
297 | ||
96ebe67e | 298 | // Get track parameters of current hit |
299 | x = trackReference->X(); | |
300 | y = trackReference->Y(); | |
301 | z = trackReference->Z(); | |
302 | pX = trackReference->Px(); | |
303 | pY = trackReference->Py(); | |
304 | pZ = trackReference->Pz(); | |
b8dc484b | 305 | |
96ebe67e | 306 | // check chamberId of current trackReference |
c59f70b9 | 307 | Int_t detElemId = trackReference->UserId(); |
308 | Int_t chamberId = detElemId / 100 - 1; | |
96ebe67e | 309 | if (chamberId < 0 || chamberId >= AliMUONConstants::NTrackingCh()) continue; |
48217459 | 310 | |
96ebe67e | 311 | // set hit parameters |
c59f70b9 | 312 | hit->SetUniqueID(AliMUONVCluster::BuildUniqueID(chamberId, detElemId, iHit)); |
103e6575 | 313 | hit->SetXYZ(x,y,z); |
314 | hit->SetErrXY(0.,0.); | |
b8dc484b | 315 | |
96ebe67e | 316 | // compute track parameters at hit |
7cdc832b | 317 | bendingSlope = 0; |
318 | nonBendingSlope = 0; | |
319 | inverseBendingMomentum = 0; | |
96ebe67e | 320 | if (TMath::Abs(pZ) > 0) { |
321 | bendingSlope = pY/pZ; | |
322 | nonBendingSlope = pX/pZ; | |
b8dc484b | 323 | } |
96ebe67e | 324 | Double_t pYZ = TMath::Sqrt(pY*pY+pZ*pZ); |
325 | if (pYZ >0) inverseBendingMomentum = 1/pYZ; | |
326 | inverseBendingMomentum *= charge; | |
327 | ||
328 | // set track parameters at hit | |
329 | AliMUONTrackParam trackParam; | |
330 | trackParam.SetNonBendingCoor(x); | |
331 | trackParam.SetBendingCoor(y); | |
332 | trackParam.SetZ(z); | |
333 | trackParam.SetBendingSlope(bendingSlope); | |
334 | trackParam.SetNonBendingSlope(nonBendingSlope); | |
335 | trackParam.SetInverseBendingMomentum(inverseBendingMomentum); | |
336 | ||
337 | // add track parameters at current hit to the track | |
103e6575 | 338 | track.AddTrackParamAtCluster(trackParam, *hit, kTRUE); |
96ebe67e | 339 | } |
340 | ||
61fed964 | 341 | // if none of the track hits was in MUON, goto the next track |
342 | if (track.GetNClusters() < 1) continue; | |
343 | ||
344 | // get track parameters at particle's vertex | |
345 | x = particle->Vx(); | |
346 | y = particle->Vy(); | |
347 | z = particle->Vz(); | |
348 | pX = particle->Px(); | |
349 | pY = particle->Py(); | |
350 | pZ = particle->Pz(); | |
351 | ||
352 | // compute rest of track parameters at particle's vertex | |
353 | bendingSlope = 0; | |
354 | nonBendingSlope = 0; | |
355 | inverseBendingMomentum = 0; | |
356 | if (TMath::Abs(pZ) > 0) { | |
357 | bendingSlope = pY/pZ; | |
358 | nonBendingSlope = pX/pZ; | |
359 | } | |
360 | Double_t pYZ = TMath::Sqrt(pY*pY+pZ*pZ); | |
361 | if (pYZ >0) inverseBendingMomentum = 1/pYZ; | |
362 | inverseBendingMomentum *= charge; | |
363 | ||
364 | // set track parameters at particle's vertex | |
365 | AliMUONTrackParam trackParamAtVertex; | |
366 | trackParamAtVertex.SetNonBendingCoor(x); | |
367 | trackParamAtVertex.SetBendingCoor(y); | |
368 | trackParamAtVertex.SetZ(z); | |
369 | trackParamAtVertex.SetBendingSlope(bendingSlope); | |
370 | trackParamAtVertex.SetNonBendingSlope(nonBendingSlope); | |
371 | trackParamAtVertex.SetInverseBendingMomentum(inverseBendingMomentum); | |
372 | ||
373 | // add track parameters at vertex | |
374 | track.SetTrackParamAtVertex(&trackParamAtVertex); | |
375 | ||
103e6575 | 376 | // store the track |
2e2d0c44 | 377 | track.SetUniqueID(iTrackRef); |
96ebe67e | 378 | tmpTrackRefStore->Add(track); |
b8dc484b | 379 | } |
b8dc484b | 380 | |
96ebe67e | 381 | CleanMuonTrackRef(tmpTrackRefStore); |
48217459 | 382 | |
103e6575 | 383 | delete hit; |
384 | delete cStore; | |
96ebe67e | 385 | delete tmpTrackRefStore; |
b8dc484b | 386 | } |
387 | ||
388 | //_____________________________________________________________________________ | |
96ebe67e | 389 | void AliMUONRecoCheck::CleanMuonTrackRef(const AliMUONVTrackStore *tmpTrackRefStore) |
b8dc484b | 390 | { |
48217459 | 391 | /// Re-calculate hits parameters because two AliTrackReferences are recorded for |
392 | /// each chamber (one when particle is entering + one when particle is leaving | |
393 | /// the sensitive volume) | |
103e6575 | 394 | if (!(fTrackRefStore = AliMUONESDInterface::NewTrackStore())) return; |
48217459 | 395 | |
96ebe67e | 396 | Double_t maxGasGap = 1.; // cm |
397 | Double_t x, y, z, pX, pY, pZ, x1, y1, z1, pX1, pY1, pZ1, z2; | |
398 | Double_t bendingSlope,nonBendingSlope,inverseBendingMomentum; | |
103e6575 | 399 | AliMUONVClusterStore* cStore = AliMUONESDInterface::NewClusterStore(); |
400 | if (!cStore) return; | |
401 | AliMUONVCluster* hit = cStore->CreateCluster(0,0,0); | |
48217459 | 402 | |
96ebe67e | 403 | // create iterator |
404 | TIter next(tmpTrackRefStore->CreateIterator()); | |
48217459 | 405 | |
96ebe67e | 406 | // loop over tmpTrackRef |
48217459 | 407 | AliMUONTrack* track; |
96ebe67e | 408 | while ( ( track = static_cast<AliMUONTrack*>(next()) ) ) { |
409 | ||
410 | AliMUONTrack newTrack; | |
411 | ||
412 | // loop over tmpTrackRef's hits | |
413 | Int_t iHit1 = 0; | |
414 | Int_t nTrackHits = track->GetNClusters(); | |
415 | while (iHit1 < nTrackHits) { | |
416 | AliMUONTrackParam *trackParam1 = (AliMUONTrackParam*) track->GetTrackParamAtCluster()->UncheckedAt(iHit1); | |
417 | ||
418 | // get track parameters at hit1 | |
419 | x1 = trackParam1->GetNonBendingCoor(); | |
420 | y1 = trackParam1->GetBendingCoor(); | |
421 | z1 = trackParam1->GetZ(); | |
422 | pX1 = trackParam1->Px(); | |
423 | pY1 = trackParam1->Py(); | |
424 | pZ1 = trackParam1->Pz(); | |
425 | ||
426 | // prepare new track parameters | |
427 | x = x1; | |
428 | y = y1; | |
429 | z = z1; | |
430 | pX = pX1; | |
431 | pY = pY1; | |
432 | pZ = pZ1; | |
433 | ||
434 | // loop over next tmpTrackRef's hits | |
435 | Int_t nCombinedHits = 1; | |
436 | for (Int_t iHit2 = iHit1+1; iHit2 < nTrackHits; iHit2++) { | |
437 | AliMUONTrackParam *trackParam2 = (AliMUONTrackParam*) track->GetTrackParamAtCluster()->UncheckedAt(iHit2); | |
48217459 | 438 | |
96ebe67e | 439 | // get z position of hit2 |
440 | z2 = trackParam2->GetZ(); | |
441 | ||
442 | // complete new track parameters if hit2 is on the same detection element | |
443 | if ( TMath::Abs(z2-z1) < maxGasGap ) { | |
444 | x += trackParam2->GetNonBendingCoor(); | |
445 | y += trackParam2->GetBendingCoor(); | |
446 | z += z2; | |
447 | pX += trackParam2->Px(); | |
448 | pY += trackParam2->Py(); | |
449 | pZ += trackParam2->Pz(); | |
450 | nCombinedHits++; | |
48217459 | 451 | iHit1 = iHit2; |
452 | } | |
453 | ||
96ebe67e | 454 | } |
455 | ||
456 | // finalize new track parameters | |
457 | x /= (Double_t)nCombinedHits; | |
458 | y /= (Double_t)nCombinedHits; | |
459 | z /= (Double_t)nCombinedHits; | |
460 | pX /= (Double_t)nCombinedHits; | |
461 | pY /= (Double_t)nCombinedHits; | |
462 | pZ /= (Double_t)nCombinedHits; | |
463 | bendingSlope = 0; | |
464 | nonBendingSlope = 0; | |
465 | inverseBendingMomentum = 0; | |
466 | if (TMath::Abs(pZ) > 0) { | |
467 | bendingSlope = pY/pZ; | |
468 | nonBendingSlope = pX/pZ; | |
469 | } | |
470 | Double_t pYZ = TMath::Sqrt(pY*pY+pZ*pZ); | |
471 | if (pYZ >0) inverseBendingMomentum = 1/pYZ; | |
472 | inverseBendingMomentum *= trackParam1->GetCharge(); | |
b8dc484b | 473 | |
96ebe67e | 474 | // set hit parameters |
c59f70b9 | 475 | hit->SetUniqueID(trackParam1->GetClusterPtr()->GetUniqueID()); |
103e6575 | 476 | hit->SetXYZ(x,y,z); |
477 | hit->SetErrXY(0.,0.); | |
48217459 | 478 | |
96ebe67e | 479 | // set new track parameters at new hit |
480 | AliMUONTrackParam trackParam; | |
481 | trackParam.SetNonBendingCoor(x); | |
482 | trackParam.SetBendingCoor(y); | |
483 | trackParam.SetZ(z); | |
484 | trackParam.SetBendingSlope(bendingSlope); | |
485 | trackParam.SetNonBendingSlope(nonBendingSlope); | |
486 | trackParam.SetInverseBendingMomentum(inverseBendingMomentum); | |
487 | ||
488 | // add track parameters at current hit to the track | |
103e6575 | 489 | newTrack.AddTrackParamAtCluster(trackParam, *hit, kTRUE); |
b8dc484b | 490 | |
491 | iHit1++; | |
96ebe67e | 492 | } |
48217459 | 493 | |
2e2d0c44 | 494 | newTrack.SetUniqueID(track->GetUniqueID()); |
96ebe67e | 495 | newTrack.SetTrackParamAtVertex(track->GetTrackParamAtVertex()); |
496 | fTrackRefStore->Add(newTrack); | |
b8dc484b | 497 | |
96ebe67e | 498 | } |
b8dc484b | 499 | |
103e6575 | 500 | delete hit; |
501 | delete cStore; | |
b8dc484b | 502 | } |
503 | ||
504 | //_____________________________________________________________________________ | |
96ebe67e | 505 | void AliMUONRecoCheck::MakeReconstructibleTracks() |
b8dc484b | 506 | { |
61fed964 | 507 | /// Isolate the reconstructible tracks |
103e6575 | 508 | if (!(fRecoTrackRefStore = AliMUONESDInterface::NewTrackStore())) return; |
48217459 | 509 | |
96ebe67e | 510 | // create iterator on trackRef |
511 | TIter next(fTrackRefStore->CreateIterator()); | |
b8dc484b | 512 | |
96ebe67e | 513 | // loop over trackRef |
48217459 | 514 | AliMUONTrack* track; |
96ebe67e | 515 | while ( ( track = static_cast<AliMUONTrack*>(next()) ) ) { |
516 | ||
517 | Bool_t* chamberInTrack = new Bool_t(AliMUONConstants::NTrackingCh()); | |
518 | for (Int_t iCh = 0; iCh < AliMUONConstants::NTrackingCh(); iCh++) chamberInTrack[iCh] = kFALSE; | |
48217459 | 519 | |
96ebe67e | 520 | // loop over trackRef's hits to get hit chambers |
521 | Int_t nTrackHits = track->GetNClusters(); | |
522 | for (Int_t iHit = 0; iHit < nTrackHits; iHit++) { | |
523 | AliMUONVCluster* hit = ((AliMUONTrackParam*) track->GetTrackParamAtCluster()->UncheckedAt(iHit))->GetClusterPtr(); | |
524 | chamberInTrack[hit->GetChamberId()] = kTRUE; | |
cc056de1 | 525 | } |
96ebe67e | 526 | |
cc056de1 | 527 | // track is reconstructible if the particle is depositing a hit |
528 | // in the following chamber combinations: | |
96ebe67e | 529 | Bool_t trackOK = kTRUE; |
530 | if (!chamberInTrack[0] && !chamberInTrack[1]) trackOK = kFALSE; | |
531 | if (!chamberInTrack[2] && !chamberInTrack[3]) trackOK = kFALSE; | |
532 | if (!chamberInTrack[4] && !chamberInTrack[5]) trackOK = kFALSE; | |
533 | Int_t nHitsInLastStations = 0; | |
534 | for (Int_t iCh = 6; iCh < AliMUONConstants::NTrackingCh(); iCh++) | |
535 | if (chamberInTrack[iCh]) nHitsInLastStations++; | |
536 | if(nHitsInLastStations < 3) trackOK = kFALSE; | |
48217459 | 537 | |
96ebe67e | 538 | // Add reconstructible tracks to fRecoTrackRefStore |
539 | if (trackOK) fRecoTrackRefStore->Add(*track); | |
48217459 | 540 | |
96ebe67e | 541 | delete [] chamberInTrack; |
b8dc484b | 542 | } |
48217459 | 543 | |
b8dc484b | 544 | } |
545 |