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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> | |
31 | ||
cc056de1 | 32 | #include "AliMUONRecoCheck.h" |
96ebe67e | 33 | #include "AliMUONRawClusterV2.h" |
cc056de1 | 34 | #include "AliMUONTrack.h" |
cc056de1 | 35 | #include "AliMUONConstants.h" |
48217459 | 36 | #include "AliMUONDataInterface.h" |
96ebe67e | 37 | #include "AliMUONTrackStoreV1.h" |
38 | ||
39 | #include "AliMCEventHandler.h" | |
40 | #include "AliMCEvent.h" | |
b8dc484b | 41 | #include "AliStack.h" |
cc056de1 | 42 | #include "AliTrackReference.h" |
9bdda5f6 | 43 | #include "AliLog.h" |
44 | #include "AliESDEvent.h" | |
45 | #include "AliESDMuonTrack.h" | |
96ebe67e | 46 | |
cc056de1 | 47 | #include <TParticle.h> |
5b1afea0 | 48 | #include <TParticlePDG.h> |
96ebe67e | 49 | #include <Riostream.h> |
50 | ||
9bdda5f6 | 51 | #include <cassert> |
52 | ||
5398f946 | 53 | /// \cond CLASSIMP |
b8dc484b | 54 | ClassImp(AliMUONRecoCheck) |
5398f946 | 55 | /// \endcond |
b8dc484b | 56 | |
068e4c36 | 57 | //_____________________________________________________________________________ |
96ebe67e | 58 | AliMUONRecoCheck::AliMUONRecoCheck(Char_t *chLoader, Char_t *pathSim) |
48217459 | 59 | : TObject(), |
96ebe67e | 60 | fMCEventHandler(new AliMCEventHandler()), |
61 | fDataInterface(new AliMUONDataInterface(chLoader)), | |
62 | fCurrentEvent(0), | |
63 | fTrackRefStore(0x0), | |
64 | fRecoTrackRefStore(0x0), | |
65 | fRecoTrackStore(0x0) | |
068e4c36 | 66 | { |
48217459 | 67 | /// Normal ctor |
96ebe67e | 68 | fMCEventHandler->SetInputPath(pathSim); |
69 | fMCEventHandler->InitIO(""); | |
068e4c36 | 70 | } |
71 | ||
b8dc484b | 72 | //_____________________________________________________________________________ |
48217459 | 73 | AliMUONRecoCheck::~AliMUONRecoCheck() |
b8dc484b | 74 | { |
48217459 | 75 | /// Destructor |
96ebe67e | 76 | delete fMCEventHandler; |
48217459 | 77 | delete fDataInterface; |
96ebe67e | 78 | ResetStores(); |
79 | } | |
80 | ||
81 | //_____________________________________________________________________________ | |
82 | void AliMUONRecoCheck::ResetStores() | |
83 | { | |
84 | /// Deletes all the store objects that have been created and resets the pointers to 0x0 | |
85 | delete fTrackRefStore; fTrackRefStore = 0x0; | |
86 | delete fRecoTrackRefStore; fRecoTrackRefStore = 0x0; | |
87 | delete fRecoTrackStore; fRecoTrackStore = 0x0; | |
88 | } | |
89 | ||
90 | //_____________________________________________________________________________ | |
91 | Int_t AliMUONRecoCheck::NumberOfEvents() const | |
92 | { | |
93 | /// Return the number of events | |
94 | if (fDataInterface->IsValid()) return fDataInterface->NumberOfEvents(); | |
95 | return 0; | |
b8dc484b | 96 | } |
97 | ||
48217459 | 98 | //_____________________________________________________________________________ |
96ebe67e | 99 | AliMUONVTrackStore* AliMUONRecoCheck::ReconstructedTracks(Int_t event) |
48217459 | 100 | { |
101 | /// Return the reconstructed track store for a given event | |
96ebe67e | 102 | if (!fDataInterface->IsValid()) return new AliMUONTrackStoreV1(); |
103 | ||
104 | if (event != fCurrentEvent) { | |
105 | ResetStores(); | |
106 | fCurrentEvent = event; | |
107 | } | |
108 | ||
109 | if (fRecoTrackStore != 0x0) return fRecoTrackStore; | |
110 | ||
111 | fRecoTrackStore = new AliMUONTrackStoreV1(); | |
112 | ||
113 | return fRecoTrackStore; | |
48217459 | 114 | } |
45a05f07 | 115 | |
b8dc484b | 116 | //_____________________________________________________________________________ |
9bdda5f6 | 117 | AliMUONVTrackStore* |
118 | AliMUONRecoCheck::ReconstructedTracks(AliESDEvent* esd, Bool_t padMissing) | |
119 | { | |
120 | /// Create and return a list of reconstructed tracks from ESD data. | |
121 | /// Note: the returned object must be deleted by the caller with the delete operator! | |
122 | /// For example: | |
123 | /// | |
124 | /// AliMUONVTrackStore* tracks = AliMUONRecoCheck::ReconstructedTracks(esd); | |
125 | /// delete tracks; | |
126 | /// | |
127 | /// If the padMissing flag is set to kTRUE then the missing hits on chambers [2..14] | |
128 | /// are added with the coordinate (0, 0, 0). This should be fixed in the MUON ESD | |
129 | /// structure, hopefully soon. | |
130 | ||
131 | assert( esd != NULL ); | |
132 | ||
133 | AliMUONVTrackStore* store = new AliMUONTrackStoreV1; | |
134 | ||
135 | Int_t nTracks = Int_t(esd->GetNumberOfMuonTracks()); | |
136 | for (Int_t i = 0; i < nTracks; i++) | |
137 | { | |
138 | AliESDMuonTrack* esdTrack = esd->GetMuonTrack(i); | |
139 | AliMUONTrack track; | |
140 | ||
141 | // Fill the track parameters at the vertex. | |
142 | AliMUONTrackParam vertexParams, ch1Params; | |
143 | vertexParams.GetParamFrom(*esdTrack); | |
144 | ch1Params.GetParamFromUncorrected(*esdTrack); | |
145 | ch1Params.GetCovFrom(*esdTrack); | |
146 | ||
147 | // Create the hit on chamber 1 (assume the same values as uncorrected track params) | |
148 | AliMUONRawClusterV2 hit(0, 0, 0); // ChamberID = 0, but unknown DE or cluster index so set those to zero. | |
149 | hit.SetXYZ(ch1Params.GetNonBendingCoor(), ch1Params.GetBendingCoor(), ch1Params.GetZ()); | |
150 | hit.SetErrXY(AliMUONConstants::DefaultNonBendingReso(), AliMUONConstants::DefaultBendingReso()); | |
151 | ||
152 | track.SetTrackParamAtVertex(&vertexParams); | |
153 | track.AddTrackParamAtCluster(ch1Params, hit, kTRUE); | |
154 | ||
155 | if (padMissing) | |
156 | { | |
157 | // We need to add fake hits so that AliMUONTrack::CompatibleTrack will be able to | |
158 | // match these tracks to the reference tracks returned by the TrackRefs method. | |
159 | for (Int_t chamber = 1; chamber < AliMUONConstants::NTrackingCh(); chamber++) | |
160 | { | |
161 | if (esdTrack->IsInMuonClusterMap(chamber)) | |
162 | { | |
163 | AliMUONTrackParam fakeParams; | |
164 | fakeParams.SetZ(AliMUONConstants::DefaultChamberZ(chamber)); | |
165 | fakeParams.SetBendingCoor(0); | |
166 | fakeParams.SetNonBendingCoor(0); | |
167 | AliMUONRawClusterV2 fakeHit(chamber, 0, 0); // Unknown DE or cluster index so set to zero. | |
168 | fakeHit.SetXYZ(0, 0, AliMUONConstants::DefaultChamberZ(chamber)); | |
169 | fakeHit.SetErrXY(AliMUONConstants::DefaultNonBendingReso(), AliMUONConstants::DefaultBendingReso()); | |
170 | track.AddTrackParamAtCluster(fakeParams, fakeHit, kTRUE); | |
171 | } | |
172 | } | |
173 | for (Int_t chamber = AliMUONConstants::NTrackingCh(); chamber < AliMUONConstants::NCh(); chamber++) | |
174 | { | |
175 | Int_t bit = 3 - (chamber - AliMUONConstants::NTrackingCh()); | |
176 | if ( ((esdTrack->GetHitsPatternInTrigCh() >> bit) & 0x11) != 0 ) | |
177 | { | |
178 | AliMUONTrackParam fakeParams; | |
179 | fakeParams.SetZ(AliMUONConstants::DefaultChamberZ(chamber)); | |
180 | fakeParams.SetBendingCoor(0); | |
181 | fakeParams.SetNonBendingCoor(0); | |
182 | AliMUONRawClusterV2 fakeHit(chamber, 0, 0); // Unknown DE or cluster index so set to zero. | |
183 | fakeHit.SetXYZ(0, 0, AliMUONConstants::DefaultChamberZ(chamber)); | |
184 | fakeHit.SetErrXY(1, 1); | |
185 | track.AddTrackParamAtCluster(fakeParams, fakeHit, kTRUE); | |
186 | } | |
187 | } | |
188 | } | |
189 | store->Add(track); | |
190 | } | |
191 | ||
192 | return store; | |
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 | |
96ebe67e | 200 | if (event != fCurrentEvent) { |
201 | ResetStores(); | |
202 | fCurrentEvent = event; | |
203 | } | |
204 | ||
205 | if (fTrackRefStore != 0x0) return fTrackRefStore; | |
206 | else { | |
207 | if (!fMCEventHandler->GetEvent(event)) return 0x0; | |
208 | MakeTrackRefs(); | |
209 | return fTrackRefStore; | |
210 | } | |
b8dc484b | 211 | } |
212 | ||
213 | //_____________________________________________________________________________ | |
96ebe67e | 214 | AliMUONVTrackStore* AliMUONRecoCheck::ReconstructibleTracks(Int_t event) |
b8dc484b | 215 | { |
48217459 | 216 | /// Return a track store containing the reconstructible tracks for a given event |
96ebe67e | 217 | if (event != fCurrentEvent) { |
218 | ResetStores(); | |
219 | fCurrentEvent = event; | |
220 | } | |
221 | ||
222 | if (fRecoTrackRefStore != 0x0) return fRecoTrackRefStore; | |
223 | else { | |
224 | if (TrackRefs(event) == 0x0) return 0x0; | |
225 | MakeReconstructibleTracks(); | |
226 | return fRecoTrackRefStore; | |
227 | } | |
48217459 | 228 | } |
b8dc484b | 229 | |
48217459 | 230 | //_____________________________________________________________________________ |
96ebe67e | 231 | void AliMUONRecoCheck::MakeTrackRefs() |
48217459 | 232 | { |
233 | /// Make reconstructible tracks | |
96ebe67e | 234 | AliMUONVTrackStore *tmpTrackRefStore = new AliMUONTrackStoreV1(); |
48217459 | 235 | |
96ebe67e | 236 | Double_t x, y, z, pX, pY, pZ, bendingSlope, nonBendingSlope, inverseBendingMomentum; |
237 | TParticle* particle; | |
238 | TClonesArray* trackRefs; | |
239 | Int_t nTrackRef = fMCEventHandler->MCEvent()->GetNumberOfTracks(); | |
b8dc484b | 240 | |
96ebe67e | 241 | // loop over simulated tracks |
242 | for (Int_t iTrackRef = 0; iTrackRef < nTrackRef; ++iTrackRef) { | |
243 | Int_t nHits = fMCEventHandler->GetParticleAndTR(iTrackRef, particle, trackRefs); | |
48217459 | 244 | |
96ebe67e | 245 | // skip empty trackRefs |
246 | if (nHits < 1) continue; | |
247 | ||
248 | // skip trackRefs not in MUON | |
249 | AliTrackReference* trackReference0 = static_cast<AliTrackReference*>(trackRefs->UncheckedAt(0)); | |
250 | if (trackReference0->DetectorId() != AliTrackReference::kMUON) continue; | |
251 | ||
252 | AliMUONTrack track; | |
b8dc484b | 253 | |
96ebe67e | 254 | // get track parameters at particle's vertex |
255 | x = particle->Vx(); | |
256 | y = particle->Vy(); | |
257 | z = particle->Vz(); | |
258 | pX = particle->Px(); | |
259 | pY = particle->Py(); | |
260 | pZ = particle->Pz(); | |
dba3c809 | 261 | |
96ebe67e | 262 | // compute rest of track parameters at particle's vertex |
263 | bendingSlope = 0; | |
264 | nonBendingSlope = 0; | |
265 | inverseBendingMomentum = 0; | |
266 | if (TMath::Abs(pZ) > 0) { | |
267 | bendingSlope = pY/pZ; | |
268 | nonBendingSlope = pX/pZ; | |
269 | } | |
270 | Double_t pYZ = TMath::Sqrt(pY*pY+pZ*pZ); | |
271 | if (pYZ >0) inverseBendingMomentum = 1/pYZ; | |
272 | TParticlePDG* ppdg = particle->GetPDG(1); | |
273 | Int_t charge = (Int_t)(ppdg->Charge()/3.0); | |
274 | inverseBendingMomentum *= charge; | |
275 | ||
276 | // set track parameters at particle's vertex | |
277 | AliMUONTrackParam trackParamAtVertex; | |
278 | trackParamAtVertex.SetNonBendingCoor(x); | |
279 | trackParamAtVertex.SetBendingCoor(y); | |
280 | trackParamAtVertex.SetZ(z); | |
281 | trackParamAtVertex.SetBendingSlope(bendingSlope); | |
282 | trackParamAtVertex.SetNonBendingSlope(nonBendingSlope); | |
283 | trackParamAtVertex.SetInverseBendingMomentum(inverseBendingMomentum); | |
284 | ||
285 | // add track parameters at vertex | |
286 | track.SetTrackParamAtVertex(&trackParamAtVertex); | |
48217459 | 287 | |
96ebe67e | 288 | // loop over simulated track hits |
289 | for (Int_t iHit = 0; iHit < nHits; ++iHit) { | |
290 | AliTrackReference* trackReference = static_cast<AliTrackReference*>(trackRefs->UncheckedAt(iHit)); | |
068e4c36 | 291 | |
96ebe67e | 292 | // Get track parameters of current hit |
293 | x = trackReference->X(); | |
294 | y = trackReference->Y(); | |
295 | z = trackReference->Z(); | |
296 | pX = trackReference->Px(); | |
297 | pY = trackReference->Py(); | |
298 | pZ = trackReference->Pz(); | |
b8dc484b | 299 | |
96ebe67e | 300 | // check chamberId of current trackReference |
301 | Int_t chamberId = AliMUONConstants::ChamberNumber(z); | |
302 | if (chamberId < 0 || chamberId >= AliMUONConstants::NTrackingCh()) continue; | |
48217459 | 303 | |
96ebe67e | 304 | // set hit parameters |
305 | AliMUONRawClusterV2 hit(chamberId, 0, 0); | |
306 | hit.SetXYZ(x,y,z); | |
307 | hit.SetErrXY(0.,0.); | |
b8dc484b | 308 | |
96ebe67e | 309 | // compute track parameters at hit |
310 | Double_t bendingSlope = 0; | |
311 | Double_t nonBendingSlope = 0; | |
312 | Double_t inverseBendingMomentum = 0; | |
313 | if (TMath::Abs(pZ) > 0) { | |
314 | bendingSlope = pY/pZ; | |
315 | nonBendingSlope = pX/pZ; | |
b8dc484b | 316 | } |
96ebe67e | 317 | Double_t pYZ = TMath::Sqrt(pY*pY+pZ*pZ); |
318 | if (pYZ >0) inverseBendingMomentum = 1/pYZ; | |
319 | inverseBendingMomentum *= charge; | |
320 | ||
321 | // set track parameters at hit | |
322 | AliMUONTrackParam trackParam; | |
323 | trackParam.SetNonBendingCoor(x); | |
324 | trackParam.SetBendingCoor(y); | |
325 | trackParam.SetZ(z); | |
326 | trackParam.SetBendingSlope(bendingSlope); | |
327 | trackParam.SetNonBendingSlope(nonBendingSlope); | |
328 | trackParam.SetInverseBendingMomentum(inverseBendingMomentum); | |
329 | ||
330 | // add track parameters at current hit to the track | |
331 | track.AddTrackParamAtCluster(trackParam,hit,kTRUE); | |
332 | } | |
333 | ||
334 | track.GetTrackParamAtCluster()->Sort(); | |
335 | track.SetTrackID(iTrackRef); | |
336 | tmpTrackRefStore->Add(track); | |
b8dc484b | 337 | } |
b8dc484b | 338 | |
96ebe67e | 339 | CleanMuonTrackRef(tmpTrackRefStore); |
48217459 | 340 | |
96ebe67e | 341 | delete tmpTrackRefStore; |
b8dc484b | 342 | } |
343 | ||
344 | //_____________________________________________________________________________ | |
96ebe67e | 345 | void AliMUONRecoCheck::CleanMuonTrackRef(const AliMUONVTrackStore *tmpTrackRefStore) |
b8dc484b | 346 | { |
48217459 | 347 | /// Re-calculate hits parameters because two AliTrackReferences are recorded for |
348 | /// each chamber (one when particle is entering + one when particle is leaving | |
349 | /// the sensitive volume) | |
96ebe67e | 350 | fTrackRefStore = new AliMUONTrackStoreV1(); |
48217459 | 351 | |
96ebe67e | 352 | Double_t maxGasGap = 1.; // cm |
353 | Double_t x, y, z, pX, pY, pZ, x1, y1, z1, pX1, pY1, pZ1, z2; | |
354 | Double_t bendingSlope,nonBendingSlope,inverseBendingMomentum; | |
48217459 | 355 | |
96ebe67e | 356 | // create iterator |
357 | TIter next(tmpTrackRefStore->CreateIterator()); | |
48217459 | 358 | |
96ebe67e | 359 | // loop over tmpTrackRef |
48217459 | 360 | AliMUONTrack* track; |
96ebe67e | 361 | while ( ( track = static_cast<AliMUONTrack*>(next()) ) ) { |
362 | ||
363 | AliMUONTrack newTrack; | |
364 | ||
365 | // loop over tmpTrackRef's hits | |
366 | Int_t iHit1 = 0; | |
367 | Int_t nTrackHits = track->GetNClusters(); | |
368 | while (iHit1 < nTrackHits) { | |
369 | AliMUONTrackParam *trackParam1 = (AliMUONTrackParam*) track->GetTrackParamAtCluster()->UncheckedAt(iHit1); | |
370 | ||
371 | // get track parameters at hit1 | |
372 | x1 = trackParam1->GetNonBendingCoor(); | |
373 | y1 = trackParam1->GetBendingCoor(); | |
374 | z1 = trackParam1->GetZ(); | |
375 | pX1 = trackParam1->Px(); | |
376 | pY1 = trackParam1->Py(); | |
377 | pZ1 = trackParam1->Pz(); | |
378 | ||
379 | // prepare new track parameters | |
380 | x = x1; | |
381 | y = y1; | |
382 | z = z1; | |
383 | pX = pX1; | |
384 | pY = pY1; | |
385 | pZ = pZ1; | |
386 | ||
387 | // loop over next tmpTrackRef's hits | |
388 | Int_t nCombinedHits = 1; | |
389 | for (Int_t iHit2 = iHit1+1; iHit2 < nTrackHits; iHit2++) { | |
390 | AliMUONTrackParam *trackParam2 = (AliMUONTrackParam*) track->GetTrackParamAtCluster()->UncheckedAt(iHit2); | |
48217459 | 391 | |
96ebe67e | 392 | // get z position of hit2 |
393 | z2 = trackParam2->GetZ(); | |
394 | ||
395 | // complete new track parameters if hit2 is on the same detection element | |
396 | if ( TMath::Abs(z2-z1) < maxGasGap ) { | |
397 | x += trackParam2->GetNonBendingCoor(); | |
398 | y += trackParam2->GetBendingCoor(); | |
399 | z += z2; | |
400 | pX += trackParam2->Px(); | |
401 | pY += trackParam2->Py(); | |
402 | pZ += trackParam2->Pz(); | |
403 | nCombinedHits++; | |
48217459 | 404 | iHit1 = iHit2; |
405 | } | |
406 | ||
96ebe67e | 407 | } |
408 | ||
409 | // finalize new track parameters | |
410 | x /= (Double_t)nCombinedHits; | |
411 | y /= (Double_t)nCombinedHits; | |
412 | z /= (Double_t)nCombinedHits; | |
413 | pX /= (Double_t)nCombinedHits; | |
414 | pY /= (Double_t)nCombinedHits; | |
415 | pZ /= (Double_t)nCombinedHits; | |
416 | bendingSlope = 0; | |
417 | nonBendingSlope = 0; | |
418 | inverseBendingMomentum = 0; | |
419 | if (TMath::Abs(pZ) > 0) { | |
420 | bendingSlope = pY/pZ; | |
421 | nonBendingSlope = pX/pZ; | |
422 | } | |
423 | Double_t pYZ = TMath::Sqrt(pY*pY+pZ*pZ); | |
424 | if (pYZ >0) inverseBendingMomentum = 1/pYZ; | |
425 | inverseBendingMomentum *= trackParam1->GetCharge(); | |
b8dc484b | 426 | |
96ebe67e | 427 | // set hit parameters |
428 | AliMUONRawClusterV2 hit(trackParam1->GetClusterPtr()->GetChamberId(), 0, 0); | |
429 | hit.SetXYZ(x,y,z); | |
430 | hit.SetErrXY(0.,0.); | |
48217459 | 431 | |
96ebe67e | 432 | // set new track parameters at new hit |
433 | AliMUONTrackParam trackParam; | |
434 | trackParam.SetNonBendingCoor(x); | |
435 | trackParam.SetBendingCoor(y); | |
436 | trackParam.SetZ(z); | |
437 | trackParam.SetBendingSlope(bendingSlope); | |
438 | trackParam.SetNonBendingSlope(nonBendingSlope); | |
439 | trackParam.SetInverseBendingMomentum(inverseBendingMomentum); | |
440 | ||
441 | // add track parameters at current hit to the track | |
442 | newTrack.AddTrackParamAtCluster(trackParam,hit,kTRUE); | |
b8dc484b | 443 | |
444 | iHit1++; | |
96ebe67e | 445 | } |
48217459 | 446 | |
96ebe67e | 447 | newTrack.GetTrackParamAtCluster()->Sort(); |
448 | newTrack.SetTrackID(track->GetTrackID()); | |
449 | newTrack.SetTrackParamAtVertex(track->GetTrackParamAtVertex()); | |
450 | fTrackRefStore->Add(newTrack); | |
b8dc484b | 451 | |
96ebe67e | 452 | } |
b8dc484b | 453 | |
b8dc484b | 454 | } |
455 | ||
456 | //_____________________________________________________________________________ | |
96ebe67e | 457 | void AliMUONRecoCheck::MakeReconstructibleTracks() |
b8dc484b | 458 | { |
48217459 | 459 | /// Calculate the number of reconstructible tracks |
96ebe67e | 460 | fRecoTrackRefStore = new AliMUONTrackStoreV1(); |
48217459 | 461 | |
96ebe67e | 462 | // create iterator on trackRef |
463 | TIter next(fTrackRefStore->CreateIterator()); | |
b8dc484b | 464 | |
96ebe67e | 465 | // loop over trackRef |
48217459 | 466 | AliMUONTrack* track; |
96ebe67e | 467 | while ( ( track = static_cast<AliMUONTrack*>(next()) ) ) { |
468 | ||
469 | Bool_t* chamberInTrack = new Bool_t(AliMUONConstants::NTrackingCh()); | |
470 | for (Int_t iCh = 0; iCh < AliMUONConstants::NTrackingCh(); iCh++) chamberInTrack[iCh] = kFALSE; | |
48217459 | 471 | |
96ebe67e | 472 | // loop over trackRef's hits to get hit chambers |
473 | Int_t nTrackHits = track->GetNClusters(); | |
474 | for (Int_t iHit = 0; iHit < nTrackHits; iHit++) { | |
475 | AliMUONVCluster* hit = ((AliMUONTrackParam*) track->GetTrackParamAtCluster()->UncheckedAt(iHit))->GetClusterPtr(); | |
476 | chamberInTrack[hit->GetChamberId()] = kTRUE; | |
cc056de1 | 477 | } |
96ebe67e | 478 | |
cc056de1 | 479 | // track is reconstructible if the particle is depositing a hit |
480 | // in the following chamber combinations: | |
96ebe67e | 481 | Bool_t trackOK = kTRUE; |
482 | if (!chamberInTrack[0] && !chamberInTrack[1]) trackOK = kFALSE; | |
483 | if (!chamberInTrack[2] && !chamberInTrack[3]) trackOK = kFALSE; | |
484 | if (!chamberInTrack[4] && !chamberInTrack[5]) trackOK = kFALSE; | |
485 | Int_t nHitsInLastStations = 0; | |
486 | for (Int_t iCh = 6; iCh < AliMUONConstants::NTrackingCh(); iCh++) | |
487 | if (chamberInTrack[iCh]) nHitsInLastStations++; | |
488 | if(nHitsInLastStations < 3) trackOK = kFALSE; | |
48217459 | 489 | |
96ebe67e | 490 | // Add reconstructible tracks to fRecoTrackRefStore |
491 | if (trackOK) fRecoTrackRefStore->Add(*track); | |
48217459 | 492 | |
96ebe67e | 493 | delete [] chamberInTrack; |
b8dc484b | 494 | } |
48217459 | 495 | |
b8dc484b | 496 | } |
497 |