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a9e2aefa | 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 | ||
88cb7938 | 16 | /* $Id$ */ |
a9e2aefa | 17 | |
3d1463c8 | 18 | //----------------------------------------------------------------------------- |
19 | // Class AliMUONTrack | |
20 | //------------------- | |
21 | // Reconstructed track in ALICE dimuon spectrometer | |
22 | //----------------------------------------------------------------------------- | |
a9e2aefa | 23 | |
63ed9c6b | 24 | #include "AliMUONTrack.h" |
34f1bfa0 | 25 | |
9bf6860b | 26 | #include "AliMUONReconstructor.h" |
103e6575 | 27 | #include "AliMUONVCluster.h" |
28 | #include "AliMUONVClusterStore.h" | |
7332f213 | 29 | #include "AliMUONObjectPair.h" |
7332f213 | 30 | #include "AliMUONTrackExtrap.h" |
933daf4c | 31 | #include "AliMUONConstants.h" |
32 | #include "AliMUONTrackParam.h" | |
a9e2aefa | 33 | |
63ed9c6b | 34 | #include "AliLog.h" |
35 | ||
63ed9c6b | 36 | #include <TMath.h> |
63ed9c6b | 37 | |
ea94c18b | 38 | #include <Riostream.h> |
39 | ||
7945aae7 | 40 | /// \cond CLASSIMP |
63ed9c6b | 41 | ClassImp(AliMUONTrack) // Class implementation in ROOT context |
7945aae7 | 42 | /// \endcond |
63ed9c6b | 43 | |
4ea3f013 | 44 | |
45 | const Double_t AliMUONTrack::fgkMaxChi2 = 1.e10; ///< maximum chi2 above which the track can be considered as abnormal | |
46 | ||
47 | ||
63ed9c6b | 48 | //__________________________________________________________________________ |
30178c30 | 49 | AliMUONTrack::AliMUONTrack() |
54d7ba50 | 50 | : TObject(), |
7332f213 | 51 | fTrackParamAtCluster(0x0), |
208f139e | 52 | fFitWithVertex(kFALSE), |
96ebe67e | 53 | fVertexErrXY2(), |
ea94c18b | 54 | fFitWithMCS(kFALSE), |
96ebe67e | 55 | fClusterWeightsNonBending(0x0), |
56 | fClusterWeightsBending(0x0), | |
ea94c18b | 57 | fGlobalChi2(-1.), |
58 | fImproved(kFALSE), | |
7771752e | 59 | fMatchTrigger(-1), |
54d7ba50 | 60 | fChi2MatchTrigger(0.), |
2e2d0c44 | 61 | fTrackID(-1), |
96ebe67e | 62 | fTrackParamAtVertex(0x0), |
423b32ca | 63 | fHitsPatternInTrigCh(0), |
5c15a68b | 64 | fLocalTrigger(0), |
65 | fConnected(kFALSE) | |
d837040f | 66 | { |
2457f726 | 67 | /// Default constructor |
96ebe67e | 68 | fVertexErrXY2[0] = 0.; |
69 | fVertexErrXY2[1] = 0.; | |
d837040f | 70 | } |
71 | ||
a9e2aefa | 72 | //__________________________________________________________________________ |
a0dc65b4 | 73 | AliMUONTrack::AliMUONTrack(AliMUONObjectPair *segment, Double_t bendingVertexDispersion) |
54d7ba50 | 74 | : TObject(), |
ce8cd162 | 75 | fTrackParamAtCluster(new TObjArray(20)), |
208f139e | 76 | fFitWithVertex(kFALSE), |
96ebe67e | 77 | fVertexErrXY2(), |
ea94c18b | 78 | fFitWithMCS(kFALSE), |
96ebe67e | 79 | fClusterWeightsNonBending(0x0), |
80 | fClusterWeightsBending(0x0), | |
ea94c18b | 81 | fGlobalChi2(0.), |
82 | fImproved(kFALSE), | |
7771752e | 83 | fMatchTrigger(-1), |
54d7ba50 | 84 | fChi2MatchTrigger(0.), |
2e2d0c44 | 85 | fTrackID(-1), |
96ebe67e | 86 | fTrackParamAtVertex(0x0), |
423b32ca | 87 | fHitsPatternInTrigCh(0), |
5c15a68b | 88 | fLocalTrigger(0), |
89 | fConnected(kFALSE) | |
a9e2aefa | 90 | { |
96ebe67e | 91 | /// Constructor from two clusters |
de2cd600 | 92 | |
ce8cd162 | 93 | fTrackParamAtCluster->SetOwner(kTRUE); |
94 | ||
96ebe67e | 95 | fVertexErrXY2[0] = 0.; |
96 | fVertexErrXY2[1] = 0.; | |
208f139e | 97 | |
96ebe67e | 98 | // Pointers to clusters from the segment |
9bf6860b | 99 | AliMUONVCluster* firstCluster = (AliMUONVCluster*) segment->First(); |
100 | AliMUONVCluster* lastCluster = (AliMUONVCluster*) segment->Second(); | |
208f139e | 101 | |
ea94c18b | 102 | // Compute track parameters |
96ebe67e | 103 | Double_t z1 = firstCluster->GetZ(); |
104 | Double_t z2 = lastCluster->GetZ(); | |
105 | Double_t dZ = z1 - z2; | |
208f139e | 106 | // Non bending plane |
96ebe67e | 107 | Double_t nonBendingCoor1 = firstCluster->GetX(); |
108 | Double_t nonBendingCoor2 = lastCluster->GetX(); | |
ea94c18b | 109 | Double_t nonBendingSlope = (nonBendingCoor1 - nonBendingCoor2) / dZ; |
208f139e | 110 | // Bending plane |
96ebe67e | 111 | Double_t bendingCoor1 = firstCluster->GetY(); |
112 | Double_t bendingCoor2 = lastCluster->GetY(); | |
ea94c18b | 113 | Double_t bendingSlope = (bendingCoor1 - bendingCoor2) / dZ; |
208f139e | 114 | // Inverse bending momentum |
96ebe67e | 115 | Double_t bendingImpact = bendingCoor1 - z1 * bendingSlope; |
208f139e | 116 | Double_t inverseBendingMomentum = 1. / AliMUONTrackExtrap::GetBendingMomentumFromImpactParam(bendingImpact); |
ea94c18b | 117 | |
9bf6860b | 118 | // Set track parameters at first cluster |
96ebe67e | 119 | AliMUONTrackParam trackParamAtFirstCluster; |
120 | trackParamAtFirstCluster.SetZ(z1); | |
121 | trackParamAtFirstCluster.SetNonBendingCoor(nonBendingCoor1); | |
122 | trackParamAtFirstCluster.SetNonBendingSlope(nonBendingSlope); | |
123 | trackParamAtFirstCluster.SetBendingCoor(bendingCoor1); | |
124 | trackParamAtFirstCluster.SetBendingSlope(bendingSlope); | |
125 | trackParamAtFirstCluster.SetInverseBendingMomentum(inverseBendingMomentum); | |
208f139e | 126 | |
9bf6860b | 127 | // Set track parameters at last cluster |
96ebe67e | 128 | AliMUONTrackParam trackParamAtLastCluster; |
129 | trackParamAtLastCluster.SetZ(z2); | |
130 | trackParamAtLastCluster.SetNonBendingCoor(nonBendingCoor2); | |
131 | trackParamAtLastCluster.SetNonBendingSlope(nonBendingSlope); | |
132 | trackParamAtLastCluster.SetBendingCoor(bendingCoor2); | |
133 | trackParamAtLastCluster.SetBendingSlope(bendingSlope); | |
134 | trackParamAtLastCluster.SetInverseBendingMomentum(inverseBendingMomentum); | |
ea94c18b | 135 | |
9bf6860b | 136 | // Compute and set track parameters covariances at first cluster |
137 | TMatrixD paramCov(5,5); | |
138 | paramCov.Zero(); | |
208f139e | 139 | // Non bending plane |
9bf6860b | 140 | paramCov(0,0) = firstCluster->GetErrX2(); |
141 | paramCov(0,1) = firstCluster->GetErrX2() / dZ; | |
142 | paramCov(1,0) = paramCov(0,1); | |
143 | paramCov(1,1) = ( firstCluster->GetErrX2() + lastCluster->GetErrX2() ) / dZ / dZ; | |
208f139e | 144 | // Bending plane |
9bf6860b | 145 | paramCov(2,2) = firstCluster->GetErrY2(); |
146 | paramCov(2,3) = firstCluster->GetErrY2() / dZ; | |
147 | paramCov(3,2) = paramCov(2,3); | |
148 | paramCov(3,3) = ( firstCluster->GetErrY2() + lastCluster->GetErrY2() ) / dZ / dZ; | |
149 | // Inverse bending momentum (vertex resolution + bending slope resolution + 10% error on dipole parameters+field) | |
89c8d66d | 150 | if (AliMUONTrackExtrap::IsFieldON()) { |
151 | paramCov(4,4) = ( ( bendingVertexDispersion*bendingVertexDispersion + | |
152 | (z1 * z1 * lastCluster->GetErrY2() + z2 * z2 * firstCluster->GetErrY2()) / dZ / dZ) / | |
153 | bendingImpact / bendingImpact + 0.1 * 0.1) * inverseBendingMomentum * inverseBendingMomentum ; | |
154 | paramCov(2,4) = - z2 * firstCluster->GetErrY2() * inverseBendingMomentum / bendingImpact / dZ; | |
155 | paramCov(4,2) = paramCov(2,4); | |
156 | paramCov(3,4) = - (z1 * lastCluster->GetErrY2() + z2 * firstCluster->GetErrY2()) * inverseBendingMomentum / bendingImpact / dZ / dZ; | |
157 | paramCov(4,3) = paramCov(3,4); | |
158 | } else paramCov(4,4) = inverseBendingMomentum*inverseBendingMomentum; | |
9bf6860b | 159 | trackParamAtFirstCluster.SetCovariances(paramCov); |
ea94c18b | 160 | |
9bf6860b | 161 | // Compute and set track parameters covariances at last cluster |
89c8d66d | 162 | // Non bending plane |
163 | paramCov(0,0) = lastCluster->GetErrX2(); | |
164 | paramCov(0,1) = - lastCluster->GetErrX2() / dZ; | |
165 | paramCov(1,0) = paramCov(0,1); | |
166 | // Bending plane | |
167 | paramCov(2,2) = lastCluster->GetErrY2(); | |
168 | paramCov(2,3) = - lastCluster->GetErrY2() / dZ; | |
169 | paramCov(3,2) = paramCov(2,3); | |
170 | // Inverse bending momentum (vertex resolution + bending slope resolution + 10% error on dipole parameters+field) | |
171 | if (AliMUONTrackExtrap::IsFieldON()) { | |
172 | paramCov(2,4) = z1 * lastCluster->GetErrY2() * inverseBendingMomentum / bendingImpact / dZ; | |
173 | paramCov(4,2) = paramCov(2,4); | |
174 | } | |
9bf6860b | 175 | trackParamAtLastCluster.SetCovariances(paramCov); |
ea94c18b | 176 | |
96ebe67e | 177 | // Add track parameters at clusters |
178 | AddTrackParamAtCluster(trackParamAtFirstCluster,*firstCluster); | |
179 | AddTrackParamAtCluster(trackParamAtLastCluster,*lastCluster); | |
de2cd600 | 180 | |
a9e2aefa | 181 | } |
182 | ||
61fed964 | 183 | //__________________________________________________________________________ |
96ebe67e | 184 | AliMUONTrack::AliMUONTrack(const AliMUONTrack& track) |
ea94c18b | 185 | : TObject(track), |
7332f213 | 186 | fTrackParamAtCluster(0x0), |
ea94c18b | 187 | fFitWithVertex(track.fFitWithVertex), |
96ebe67e | 188 | fVertexErrXY2(), |
ea94c18b | 189 | fFitWithMCS(track.fFitWithMCS), |
96ebe67e | 190 | fClusterWeightsNonBending(0x0), |
191 | fClusterWeightsBending(0x0), | |
ea94c18b | 192 | fGlobalChi2(track.fGlobalChi2), |
193 | fImproved(track.fImproved), | |
194 | fMatchTrigger(track.fMatchTrigger), | |
ea94c18b | 195 | fChi2MatchTrigger(track.fChi2MatchTrigger), |
196 | fTrackID(track.fTrackID), | |
96ebe67e | 197 | fTrackParamAtVertex(0x0), |
ea94c18b | 198 | fHitsPatternInTrigCh(track.fHitsPatternInTrigCh), |
5c15a68b | 199 | fLocalTrigger(track.fLocalTrigger), |
200 | fConnected(track.fConnected) | |
a9e2aefa | 201 | { |
2457f726 | 202 | ///copy constructor |
de2cd600 | 203 | |
ce8cd162 | 204 | // necessary to make a copy of the objects and not only the pointers in TObjArray. |
7332f213 | 205 | if (track.fTrackParamAtCluster) { |
ce8cd162 | 206 | fTrackParamAtCluster = new TObjArray(track.fTrackParamAtCluster->GetSize()); |
207 | fTrackParamAtCluster->SetOwner(kTRUE); | |
208 | for (Int_t i = 0; i < track.GetNClusters(); i++) | |
209 | fTrackParamAtCluster->AddLast(new AliMUONTrackParam(*static_cast<AliMUONTrackParam*>(track.fTrackParamAtCluster->UncheckedAt(i)))); | |
208f139e | 210 | } |
211 | ||
96ebe67e | 212 | // copy vertex resolution square used during the tracking procedure |
213 | fVertexErrXY2[0] = track.fVertexErrXY2[0]; | |
214 | fVertexErrXY2[1] = track.fVertexErrXY2[1]; | |
208f139e | 215 | |
96ebe67e | 216 | // copy cluster weights matrices if any |
217 | if (track.fClusterWeightsNonBending) fClusterWeightsNonBending = new TMatrixD(*(track.fClusterWeightsNonBending)); | |
218 | if (track.fClusterWeightsBending) fClusterWeightsBending = new TMatrixD(*(track.fClusterWeightsBending)); | |
ea94c18b | 219 | |
96ebe67e | 220 | // copy track parameters at vertex if any |
221 | if (track.fTrackParamAtVertex) fTrackParamAtVertex = new AliMUONTrackParam(*(track.fTrackParamAtVertex)); | |
208f139e | 222 | |
a9e2aefa | 223 | } |
224 | ||
956019b6 | 225 | //__________________________________________________________________________ |
ea94c18b | 226 | AliMUONTrack & AliMUONTrack::operator=(const AliMUONTrack& track) |
a9e2aefa | 227 | { |
2457f726 | 228 | /// Asignment operator |
30178c30 | 229 | // check assignement to self |
ea94c18b | 230 | if (this == &track) |
a9e2aefa | 231 | return *this; |
61adb9bd | 232 | |
30178c30 | 233 | // base class assignement |
ea94c18b | 234 | TObject::operator=(track); |
7332f213 | 235 | |
236 | // clear memory | |
237 | Clear(); | |
238 | ||
ce8cd162 | 239 | // necessary to make a copy of the objects and not only the pointers in TObjArray |
7332f213 | 240 | if (track.fTrackParamAtCluster) { |
ce8cd162 | 241 | fTrackParamAtCluster = new TObjArray(track.fTrackParamAtCluster->GetSize()); |
242 | fTrackParamAtCluster->SetOwner(kTRUE); | |
243 | for (Int_t i = 0; i < track.GetNClusters(); i++) | |
244 | fTrackParamAtCluster->AddLast(new AliMUONTrackParam(*static_cast<AliMUONTrackParam*>(track.fTrackParamAtCluster->UncheckedAt(i)))); | |
208f139e | 245 | } |
246 | ||
96ebe67e | 247 | // copy cluster weights matrix if any |
248 | if (track.fClusterWeightsNonBending) { | |
249 | if (fClusterWeightsNonBending) { | |
250 | fClusterWeightsNonBending->ResizeTo(*(track.fClusterWeightsNonBending)); | |
251 | *fClusterWeightsNonBending = *(track.fClusterWeightsNonBending); | |
252 | } else fClusterWeightsNonBending = new TMatrixD(*(track.fClusterWeightsNonBending)); | |
208f139e | 253 | } |
254 | ||
96ebe67e | 255 | // copy cluster weights matrix if any |
256 | if (track.fClusterWeightsBending) { | |
257 | if (fClusterWeightsBending) { | |
258 | fClusterWeightsBending->ResizeTo(*(track.fClusterWeightsBending)); | |
259 | *fClusterWeightsBending = *(track.fClusterWeightsBending); | |
260 | } else fClusterWeightsBending = new TMatrixD(*(track.fClusterWeightsBending)); | |
ea94c18b | 261 | } |
262 | ||
96ebe67e | 263 | // copy track parameters at vertex if any |
264 | if (track.fTrackParamAtVertex) { | |
265 | if (fTrackParamAtVertex) *fTrackParamAtVertex = *(track.fTrackParamAtVertex); | |
266 | else fTrackParamAtVertex = new AliMUONTrackParam(*(track.fTrackParamAtVertex)); | |
ea94c18b | 267 | } |
de2cd600 | 268 | |
ea94c18b | 269 | fFitWithVertex = track.fFitWithVertex; |
96ebe67e | 270 | fVertexErrXY2[0] = track.fVertexErrXY2[0]; |
271 | fVertexErrXY2[1] = track.fVertexErrXY2[1]; | |
ea94c18b | 272 | fFitWithMCS = track.fFitWithMCS; |
273 | fGlobalChi2 = track.fGlobalChi2; | |
274 | fImproved = track.fImproved; | |
275 | fMatchTrigger = track.fMatchTrigger; | |
ea94c18b | 276 | fChi2MatchTrigger = track.fChi2MatchTrigger; |
277 | fTrackID = track.fTrackID; | |
278 | fHitsPatternInTrigCh = track.fHitsPatternInTrigCh; | |
279 | fLocalTrigger = track.fLocalTrigger; | |
5c15a68b | 280 | fConnected = track.fConnected; |
30178c30 | 281 | |
61adb9bd | 282 | return *this; |
a9e2aefa | 283 | } |
284 | ||
8429a5e4 | 285 | //__________________________________________________________________________ |
ea94c18b | 286 | AliMUONTrack::~AliMUONTrack() |
287 | { | |
288 | /// Destructor | |
96ebe67e | 289 | delete fTrackParamAtCluster; |
290 | delete fClusterWeightsNonBending; | |
291 | delete fClusterWeightsBending; | |
292 | delete fTrackParamAtVertex; | |
ea94c18b | 293 | } |
294 | ||
295 | //__________________________________________________________________________ | |
ce8cd162 | 296 | void AliMUONTrack::Clear(Option_t* /*opt*/) |
ea94c18b | 297 | { |
298 | /// Clear arrays | |
ce8cd162 | 299 | delete fTrackParamAtCluster; fTrackParamAtCluster = 0x0; |
96ebe67e | 300 | delete fClusterWeightsNonBending; fClusterWeightsNonBending = 0x0; |
301 | delete fClusterWeightsBending; fClusterWeightsBending = 0x0; | |
302 | delete fTrackParamAtVertex; fTrackParamAtVertex = 0x0; | |
ea94c18b | 303 | } |
304 | ||
b1fea02e | 305 | //__________________________________________________________________________ |
306 | void AliMUONTrack::Reset() | |
307 | { | |
308 | /// Reset to default values | |
309 | SetUniqueID(0); | |
310 | fFitWithVertex = kFALSE; | |
311 | fVertexErrXY2[0] = 0.; | |
312 | fVertexErrXY2[1] = 0.; | |
313 | fFitWithMCS = kFALSE; | |
314 | fGlobalChi2 = -1.; | |
315 | fImproved = kFALSE; | |
316 | fMatchTrigger = -1; | |
b1fea02e | 317 | fChi2MatchTrigger = 0.; |
2e2d0c44 | 318 | fTrackID = -1; |
b1fea02e | 319 | fHitsPatternInTrigCh = 0; |
320 | fLocalTrigger = 0; | |
5c15a68b | 321 | fConnected = kFALSE; |
b1fea02e | 322 | delete fTrackParamAtCluster; fTrackParamAtCluster = 0x0; |
323 | delete fClusterWeightsNonBending; fClusterWeightsNonBending = 0x0; | |
324 | delete fClusterWeightsBending; fClusterWeightsBending = 0x0; | |
325 | delete fTrackParamAtVertex; fTrackParamAtVertex = 0x0; | |
326 | } | |
327 | ||
7332f213 | 328 | //__________________________________________________________________________ |
ce8cd162 | 329 | TObjArray* AliMUONTrack::GetTrackParamAtCluster() const |
7332f213 | 330 | { |
331 | /// return array of track parameters at cluster (create it if needed) | |
ce8cd162 | 332 | if (!fTrackParamAtCluster) { |
333 | fTrackParamAtCluster = new TObjArray(20); | |
334 | fTrackParamAtCluster->SetOwner(kTRUE); | |
335 | } | |
7332f213 | 336 | return fTrackParamAtCluster; |
337 | } | |
338 | ||
ea94c18b | 339 | //__________________________________________________________________________ |
96ebe67e | 340 | void AliMUONTrack::AddTrackParamAtCluster(const AliMUONTrackParam &trackParam, AliMUONVCluster &cluster, Bool_t copy) |
8429a5e4 | 341 | { |
96ebe67e | 342 | /// Copy given track parameters into a new TrackParamAtCluster |
343 | /// Link parameters with the associated cluster | |
344 | /// If copy=kTRUE: the cluster is copied then passed the trackParam which become its owner | |
345 | /// otherwise: make sure to do not delete the cluster until it is used by the track | |
346 | ||
347 | // check chamber ID of the associated cluster | |
348 | if (cluster.GetChamberId() < 0 || cluster.GetChamberId() > AliMUONConstants::NTrackingCh()) { | |
349 | AliError(Form("Chamber ID of the associated cluster is not valid (ChamberId=%d)",cluster.GetChamberId())); | |
ea94c18b | 350 | return; |
351 | } | |
352 | ||
96ebe67e | 353 | // check whether track parameters are given at the correct cluster z position |
354 | if (cluster.GetZ() != trackParam.GetZ()) { | |
355 | AliError("track parameters are given at a different z position than the one of the associated cluster"); | |
ea94c18b | 356 | return; |
357 | } | |
358 | ||
96ebe67e | 359 | // add parameters to the array of track parameters |
ce8cd162 | 360 | if (!fTrackParamAtCluster) { |
361 | fTrackParamAtCluster = new TObjArray(20); | |
362 | fTrackParamAtCluster->SetOwner(kTRUE); | |
363 | } | |
364 | AliMUONTrackParam* trackParamAtCluster = new AliMUONTrackParam(trackParam); | |
365 | fTrackParamAtCluster->AddLast(trackParamAtCluster); | |
96ebe67e | 366 | |
367 | // link parameters with the associated cluster or its copy | |
368 | if (copy) { | |
1467f4ba | 369 | AliMUONVCluster *clusterCopy = static_cast<AliMUONVCluster*>(cluster.Clone()); |
96ebe67e | 370 | trackParamAtCluster->SetClusterPtr(clusterCopy, kTRUE); |
371 | } else trackParamAtCluster->SetClusterPtr(&cluster); | |
7332f213 | 372 | |
373 | // sort the array of track parameters | |
374 | fTrackParamAtCluster->Sort(); | |
ea94c18b | 375 | } |
376 | ||
956019b6 | 377 | //__________________________________________________________________________ |
96ebe67e | 378 | void AliMUONTrack::RemoveTrackParamAtCluster(AliMUONTrackParam *trackParam) |
956019b6 | 379 | { |
ce8cd162 | 380 | /// Remove trackParam from the array of TrackParamAtCluster and delete it since the array is owner |
381 | ||
382 | if (fTrackParamAtCluster) { | |
383 | ||
384 | AliMUONTrackParam* trackParamAtCluster = static_cast<AliMUONTrackParam*>(fTrackParamAtCluster->Remove(trackParam)); | |
385 | ||
386 | if (trackParamAtCluster) { | |
387 | ||
388 | // clean memory | |
389 | delete trackParamAtCluster; | |
390 | ||
391 | // remove hole | |
392 | fTrackParamAtCluster->Compress(); | |
393 | ||
394 | } else AliWarning("object to remove does not exist in array fTrackParamAtCluster"); | |
395 | ||
396 | } else AliWarning("array fTrackParamAtCluster does not exist"); | |
de2cd600 | 397 | |
04b5ea16 | 398 | } |
399 | ||
ea94c18b | 400 | //__________________________________________________________________________ |
4ea3f013 | 401 | Bool_t AliMUONTrack::UpdateTrackParamAtCluster() |
d2b1e7bb | 402 | { |
96ebe67e | 403 | /// Update track parameters at each attached cluster |
4ea3f013 | 404 | /// Return kFALSE in case of failure (i.e. extrapolation problem) |
ea94c18b | 405 | |
ce8cd162 | 406 | Int_t nClusters = GetNClusters(); |
407 | if (nClusters == 0) { | |
96ebe67e | 408 | AliWarning("no cluster attached to the track"); |
4ea3f013 | 409 | return kFALSE; |
ea94c18b | 410 | } |
411 | ||
4ea3f013 | 412 | Bool_t extrapStatus = kTRUE; |
ce8cd162 | 413 | AliMUONTrackParam* startingTrackParam = static_cast<AliMUONTrackParam*>(fTrackParamAtCluster->UncheckedAt(0)); |
414 | ||
415 | for (Int_t i = 1; i < nClusters; i++) { | |
416 | AliMUONTrackParam* trackParamAtCluster = static_cast<AliMUONTrackParam*>(fTrackParamAtCluster->UncheckedAt(i)); | |
ea94c18b | 417 | |
418 | // reset track parameters and their covariances | |
96ebe67e | 419 | trackParamAtCluster->SetParameters(startingTrackParam->GetParameters()); |
420 | trackParamAtCluster->SetZ(startingTrackParam->GetZ()); | |
ea94c18b | 421 | |
422 | // extrapolation to the given z | |
4ea3f013 | 423 | if (!AliMUONTrackExtrap::ExtrapToZ(trackParamAtCluster, trackParamAtCluster->GetClusterPtr()->GetZ())) extrapStatus = kFALSE; |
ea94c18b | 424 | |
425 | // prepare next step | |
96ebe67e | 426 | startingTrackParam = trackParamAtCluster; |
ea94c18b | 427 | } |
428 | ||
4ea3f013 | 429 | // set global chi2 to max value in case of problem during track extrapolation |
430 | if (!extrapStatus) SetGlobalChi2(2.*MaxChi2()); | |
431 | return extrapStatus; | |
432 | ||
d2b1e7bb | 433 | } |
434 | ||
b8dc484b | 435 | //__________________________________________________________________________ |
4ea3f013 | 436 | Bool_t AliMUONTrack::UpdateCovTrackParamAtCluster() |
ea94c18b | 437 | { |
96ebe67e | 438 | /// Update track parameters and their covariances at each attached cluster |
439 | /// Include effects of multiple scattering in chambers | |
4ea3f013 | 440 | /// Return kFALSE in case of failure (i.e. extrapolation problem) |
ea94c18b | 441 | |
ce8cd162 | 442 | Int_t nClusters = GetNClusters(); |
443 | if (nClusters == 0) { | |
96ebe67e | 444 | AliWarning("no cluster attached to the track"); |
4ea3f013 | 445 | return kFALSE; |
ea94c18b | 446 | } |
447 | ||
4ea3f013 | 448 | Bool_t extrapStatus = kTRUE; |
ce8cd162 | 449 | AliMUONTrackParam* startingTrackParam = static_cast<AliMUONTrackParam*>(fTrackParamAtCluster->UncheckedAt(0)); |
96ebe67e | 450 | Int_t expectedChamber = startingTrackParam->GetClusterPtr()->GetChamberId() + 1; |
451 | Int_t currentChamber; | |
ce8cd162 | 452 | |
453 | for (Int_t i = 1; i < nClusters; i++) { | |
454 | AliMUONTrackParam* trackParamAtCluster = static_cast<AliMUONTrackParam*>(fTrackParamAtCluster->UncheckedAt(i)); | |
ea94c18b | 455 | |
456 | // reset track parameters and their covariances | |
96ebe67e | 457 | trackParamAtCluster->SetParameters(startingTrackParam->GetParameters()); |
458 | trackParamAtCluster->SetZ(startingTrackParam->GetZ()); | |
459 | trackParamAtCluster->SetCovariances(startingTrackParam->GetCovariances()); | |
ea94c18b | 460 | |
96ebe67e | 461 | // add MCS effect |
4663da9f | 462 | AliMUONTrackExtrap::AddMCSEffect(trackParamAtCluster,AliMUONConstants::ChamberThicknessInX0(expectedChamber-1),-1.); |
96ebe67e | 463 | |
464 | // add MCS in missing chambers if any | |
465 | currentChamber = trackParamAtCluster->GetClusterPtr()->GetChamberId(); | |
466 | while (currentChamber > expectedChamber) { | |
467 | // extrapolation to the missing chamber | |
4ea3f013 | 468 | if (!AliMUONTrackExtrap::ExtrapToZCov(trackParamAtCluster, AliMUONConstants::DefaultChamberZ(expectedChamber))) extrapStatus = kFALSE; |
96ebe67e | 469 | // add MCS effect |
4663da9f | 470 | AliMUONTrackExtrap::AddMCSEffect(trackParamAtCluster,AliMUONConstants::ChamberThicknessInX0(expectedChamber),-1.); |
96ebe67e | 471 | expectedChamber++; |
472 | } | |
473 | ||
474 | // extrapolation to the z of the current cluster | |
4ea3f013 | 475 | if (!AliMUONTrackExtrap::ExtrapToZCov(trackParamAtCluster, trackParamAtCluster->GetClusterPtr()->GetZ())) extrapStatus = kFALSE; |
ea94c18b | 476 | |
477 | // prepare next step | |
96ebe67e | 478 | expectedChamber = currentChamber + 1; |
479 | startingTrackParam = trackParamAtCluster; | |
ea94c18b | 480 | } |
96ebe67e | 481 | |
4ea3f013 | 482 | // set global chi2 to max value in case of problem during track extrapolation |
483 | if (!extrapStatus) SetGlobalChi2(2.*MaxChi2()); | |
484 | return extrapStatus; | |
485 | ||
7332f213 | 486 | } |
487 | ||
488 | //__________________________________________________________________________ | |
f202486b | 489 | Bool_t AliMUONTrack::IsValid(UInt_t requestedStationMask, Bool_t request2ChInSameSt45) |
7332f213 | 490 | { |
3d7acbb7 | 491 | /// check the validity of the current track: |
492 | /// at least one cluster per requested station | |
493 | /// and at least 2 chambers in stations 4 & 5 that contain cluster(s) | |
f202486b | 494 | /// + if request2ChInSameSt45 = kTRUE: 2 chambers hit in the same station (4 or 5) |
7332f213 | 495 | |
496 | Int_t nClusters = GetNClusters(); | |
497 | AliMUONTrackParam *trackParam; | |
f202486b | 498 | Int_t currentCh, currentSt, previousCh = -1, nChHitInSt4 = 0, nChHitInSt5 = 0; |
ad3c6eda | 499 | UInt_t presentStationMask(0); |
7332f213 | 500 | |
3d7acbb7 | 501 | // first loop over clusters |
ad3c6eda | 502 | for (Int_t i = 0; i < nClusters; i++) { |
7332f213 | 503 | trackParam = (AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(i); |
3d7acbb7 | 504 | |
505 | currentCh = trackParam->GetClusterPtr()->GetChamberId(); | |
506 | currentSt = currentCh/2; | |
507 | ||
508 | // build present station mask | |
509 | presentStationMask |= ( 1 << currentSt ); | |
510 | ||
f202486b | 511 | // count the number of chambers hit in station 4 that contain cluster(s) |
512 | if (currentSt == 3 && currentCh != previousCh) { | |
513 | nChHitInSt4++; | |
514 | previousCh = currentCh; | |
515 | } | |
516 | ||
517 | // count the number of chambers hit in station 5 that contain cluster(s) | |
518 | if (currentSt == 4 && currentCh != previousCh) { | |
519 | nChHitInSt5++; | |
3d7acbb7 | 520 | previousCh = currentCh; |
521 | } | |
522 | ||
7332f213 | 523 | } |
524 | ||
f202486b | 525 | // at least one cluster per requested station |
526 | if ((requestedStationMask & presentStationMask) != requestedStationMask) return kFALSE; | |
527 | ||
528 | // 2 chambers hit in the same station (4 or 5) | |
529 | if (request2ChInSameSt45) return (nChHitInSt4 == 2 || nChHitInSt5 == 2); | |
530 | // or 2 chambers hit in station 4 & 5 together | |
531 | else return (nChHitInSt4+nChHitInSt5 >= 2); | |
532 | ||
7332f213 | 533 | } |
534 | ||
535 | //__________________________________________________________________________ | |
a0dc65b4 | 536 | void AliMUONTrack::TagRemovableClusters(UInt_t requestedStationMask) { |
7332f213 | 537 | /// Identify clusters that can be removed from the track, |
3d7acbb7 | 538 | /// with the only requirements to have at least 1 cluster per requested station |
539 | /// and at least 2 chambers over 4 in stations 4 & 5 that contain cluster(s) | |
7332f213 | 540 | |
541 | Int_t nClusters = GetNClusters(); | |
542 | AliMUONTrackParam *trackParam, *nextTrackParam; | |
3d7acbb7 | 543 | Int_t currentCh, nextCh, currentSt, nextSt, previousCh = -1, nChHitInSt45 = 0; |
7332f213 | 544 | |
3d7acbb7 | 545 | // first loop over clusters |
7332f213 | 546 | for (Int_t i = 0; i < nClusters; i++) { |
547 | trackParam = (AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(i); | |
3d7acbb7 | 548 | |
549 | currentCh = trackParam->GetClusterPtr()->GetChamberId(); | |
550 | currentSt = currentCh/2; | |
551 | ||
552 | // reset flags to kFALSE for all clusters in required station | |
553 | if ((1 << currentSt) & requestedStationMask) trackParam->SetRemovable(kFALSE); | |
9bf6860b | 554 | else trackParam->SetRemovable(kTRUE); |
3d7acbb7 | 555 | |
556 | // count the number of chambers in station 4 & 5 that contain cluster(s) | |
557 | if (currentCh > 5 && currentCh != previousCh) { | |
558 | nChHitInSt45++; | |
559 | previousCh = currentCh; | |
560 | } | |
561 | ||
7332f213 | 562 | } |
563 | ||
3d7acbb7 | 564 | // second loop over clusters |
7332f213 | 565 | for (Int_t i = 0; i < nClusters; i++) { |
566 | trackParam = (AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(i); | |
567 | ||
568 | currentCh = trackParam->GetClusterPtr()->GetChamberId(); | |
3d7acbb7 | 569 | currentSt = currentCh/2; |
7332f213 | 570 | |
3d7acbb7 | 571 | // make sure they are more than 2 clusters in 2 different chambers of stations 4 & 5 |
572 | // but 2 clusters in he same chamber will still be flagged as removable | |
573 | if (nChHitInSt45 < 3 && currentSt > 2) { | |
7332f213 | 574 | |
3d7acbb7 | 575 | if (i == nClusters-1) { |
576 | ||
577 | trackParam->SetRemovable(kFALSE); | |
7332f213 | 578 | |
3d7acbb7 | 579 | } else { |
580 | ||
581 | nextTrackParam = (AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(i+1); | |
582 | nextCh = nextTrackParam->GetClusterPtr()->GetChamberId(); | |
583 | ||
584 | // set clusters in the same chamber as being removable | |
585 | if (nextCh == currentCh) { | |
586 | trackParam->SetRemovable(kTRUE); | |
587 | nextTrackParam->SetRemovable(kTRUE); | |
588 | i++; // skip cluster already checked | |
589 | } else { | |
590 | trackParam->SetRemovable(kFALSE); | |
591 | } | |
592 | ||
593 | } | |
7332f213 | 594 | |
3d7acbb7 | 595 | } else { |
596 | ||
597 | // skip clusters already flag as removable | |
598 | if (trackParam->IsRemovable()) continue; | |
599 | ||
600 | // loop over next track parameters | |
601 | for (Int_t j = i+1; j < nClusters; j++) { | |
602 | nextTrackParam = (AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(j); | |
603 | ||
604 | nextCh = nextTrackParam->GetClusterPtr()->GetChamberId(); | |
605 | nextSt = nextCh/2; | |
606 | ||
607 | // set clusters in the same station as being removable | |
608 | if (nextSt == currentSt) { | |
609 | trackParam->SetRemovable(kTRUE); | |
610 | nextTrackParam->SetRemovable(kTRUE); | |
611 | i++; // skip cluster already checked | |
612 | } | |
613 | ||
614 | } | |
7332f213 | 615 | |
616 | } | |
3d7acbb7 | 617 | |
7332f213 | 618 | } |
619 | ||
208f139e | 620 | } |
621 | ||
ea94c18b | 622 | //__________________________________________________________________________ |
623 | Bool_t AliMUONTrack::ComputeLocalChi2(Bool_t accountForMCS) | |
624 | { | |
96ebe67e | 625 | /// Compute each cluster contribution to the chi2 of the track |
ea94c18b | 626 | /// accounting for multiple scattering or not according to the flag |
96ebe67e | 627 | /// - Also recompute the weight matrices of the attached clusters if accountForMCS=kTRUE |
628 | /// - Assume that track parameters at each cluster are corrects | |
ea94c18b | 629 | /// - Return kFALSE if computation failed |
7332f213 | 630 | AliDebug(1,"Enter ComputeLocalChi2"); |
631 | ||
632 | if (!fTrackParamAtCluster) { | |
633 | AliWarning("no cluster attached to this track"); | |
634 | return kFALSE; | |
635 | } | |
ea94c18b | 636 | |
ea94c18b | 637 | if (accountForMCS) { // Compute local chi2 taking into account multiple scattering effects |
638 | ||
639 | // Compute MCS covariance matrix only once | |
96ebe67e | 640 | Int_t nClusters = GetNClusters(); |
641 | TMatrixD mcsCovariances(nClusters,nClusters); | |
ea94c18b | 642 | ComputeMCSCovariances(mcsCovariances); |
643 | ||
96ebe67e | 644 | // Make sure cluster weights are consistent with following calculations |
645 | if (!ComputeClusterWeights(&mcsCovariances)) { | |
ea94c18b | 646 | AliWarning("cannot take into account the multiple scattering effects"); |
647 | return ComputeLocalChi2(kFALSE); | |
648 | } | |
649 | ||
650 | // Compute chi2 of the track | |
651 | Double_t globalChi2 = ComputeGlobalChi2(kTRUE); | |
652 | if (globalChi2 < 0.) return kFALSE; | |
653 | ||
96ebe67e | 654 | // Loop over removable clusters and compute their local chi2 |
ce8cd162 | 655 | AliMUONTrackParam* trackParamAtCluster; |
96ebe67e | 656 | AliMUONTrackParam* trackParamAtCluster1; |
657 | AliMUONVCluster *cluster, *discardedCluster; | |
658 | Int_t iCluster1, iCluster2, iCurrentCluster1, iCurrentCluster2; | |
c812dd48 | 659 | TMatrixD clusterWeightsNB(nClusters-1,nClusters-1); |
660 | TMatrixD clusterWeightsB(nClusters-1,nClusters-1); | |
96ebe67e | 661 | Double_t *dX = new Double_t[nClusters-1]; |
662 | Double_t *dY = new Double_t[nClusters-1]; | |
ea94c18b | 663 | Double_t globalChi2b; |
ce8cd162 | 664 | for (Int_t iCluster = 0; iCluster < nClusters ; iCluster++) { |
665 | trackParamAtCluster = static_cast<AliMUONTrackParam*>(fTrackParamAtCluster->UncheckedAt(iCluster)); | |
ea94c18b | 666 | |
96ebe67e | 667 | discardedCluster = trackParamAtCluster->GetClusterPtr(); |
ea94c18b | 668 | |
96ebe67e | 669 | // Recompute cluster weights without the current cluster |
c812dd48 | 670 | if (!ComputeClusterWeights(clusterWeightsNB, clusterWeightsB, &mcsCovariances, discardedCluster)) { |
ea94c18b | 671 | AliWarning("cannot take into account the multiple scattering effects"); |
96ebe67e | 672 | delete [] dX; |
673 | delete [] dY; | |
674 | return ComputeLocalChi2(kFALSE); | |
ea94c18b | 675 | } |
676 | ||
96ebe67e | 677 | // Compute track chi2 without the current cluster |
ea94c18b | 678 | globalChi2b = 0.; |
96ebe67e | 679 | iCurrentCluster1 = 0; |
680 | for (iCluster1 = 0; iCluster1 < nClusters ; iCluster1++) { | |
681 | trackParamAtCluster1 = (AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(iCluster1); | |
682 | cluster = trackParamAtCluster1->GetClusterPtr(); | |
ea94c18b | 683 | |
96ebe67e | 684 | if (cluster == discardedCluster) continue; |
ea94c18b | 685 | |
686 | // Compute and save residuals | |
96ebe67e | 687 | dX[iCurrentCluster1] = cluster->GetX() - trackParamAtCluster1->GetNonBendingCoor(); |
688 | dY[iCurrentCluster1] = cluster->GetY() - trackParamAtCluster1->GetBendingCoor(); | |
ea94c18b | 689 | |
96ebe67e | 690 | iCurrentCluster2 = 0; |
691 | for (iCluster2 = 0; iCluster2 < iCluster1; iCluster2++) { | |
692 | cluster = ((AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(iCluster2))->GetClusterPtr(); | |
ea94c18b | 693 | |
96ebe67e | 694 | if (cluster == discardedCluster) continue; |
ea94c18b | 695 | |
696 | // Add contribution from covariances | |
c812dd48 | 697 | globalChi2b += (clusterWeightsNB(iCurrentCluster1, iCurrentCluster2) + |
698 | clusterWeightsNB(iCurrentCluster2, iCurrentCluster1)) * dX[iCurrentCluster1] * dX[iCurrentCluster2] + | |
699 | (clusterWeightsB(iCurrentCluster1, iCurrentCluster2) + | |
700 | clusterWeightsB(iCurrentCluster2, iCurrentCluster1)) * dY[iCurrentCluster1] * dY[iCurrentCluster2]; | |
ea94c18b | 701 | |
96ebe67e | 702 | iCurrentCluster2++; |
ea94c18b | 703 | } |
704 | ||
705 | // Add contribution from variances | |
c812dd48 | 706 | globalChi2b += clusterWeightsNB(iCurrentCluster1, iCurrentCluster1) * dX[iCurrentCluster1] * dX[iCurrentCluster1] + |
707 | clusterWeightsB(iCurrentCluster1, iCurrentCluster1) * dY[iCurrentCluster1] * dY[iCurrentCluster1]; | |
ea94c18b | 708 | |
96ebe67e | 709 | iCurrentCluster1++; |
ea94c18b | 710 | } |
711 | ||
712 | // Set local chi2 | |
96ebe67e | 713 | trackParamAtCluster->SetLocalChi2(globalChi2 - globalChi2b); |
ea94c18b | 714 | } |
715 | ||
716 | delete [] dX; | |
717 | delete [] dY; | |
718 | ||
719 | } else { // without multiple scattering effects | |
720 | ||
ce8cd162 | 721 | Int_t nClusters = GetNClusters(); |
722 | AliMUONTrackParam* trackParamAtCluster; | |
96ebe67e | 723 | AliMUONVCluster *discardedCluster; |
ea94c18b | 724 | Double_t dX, dY; |
ce8cd162 | 725 | for (Int_t iCluster = 0; iCluster < nClusters ; iCluster++) { |
726 | trackParamAtCluster = static_cast<AliMUONTrackParam*>(fTrackParamAtCluster->UncheckedAt(iCluster)); | |
ea94c18b | 727 | |
96ebe67e | 728 | discardedCluster = trackParamAtCluster->GetClusterPtr(); |
ea94c18b | 729 | |
730 | // Compute residuals | |
96ebe67e | 731 | dX = discardedCluster->GetX() - trackParamAtCluster->GetNonBendingCoor(); |
732 | dY = discardedCluster->GetY() - trackParamAtCluster->GetBendingCoor(); | |
ea94c18b | 733 | |
734 | // Set local chi2 | |
96ebe67e | 735 | trackParamAtCluster->SetLocalChi2(dX * dX / discardedCluster->GetErrX2() + dY * dY / discardedCluster->GetErrY2()); |
ea94c18b | 736 | } |
737 | ||
738 | } | |
739 | ||
ea94c18b | 740 | return kTRUE; |
741 | ||
742 | } | |
743 | ||
744 | //__________________________________________________________________________ | |
745 | Double_t AliMUONTrack::ComputeGlobalChi2(Bool_t accountForMCS) | |
746 | { | |
747 | /// Compute the chi2 of the track accounting for multiple scattering or not according to the flag | |
96ebe67e | 748 | /// - Assume that track parameters at each cluster are corrects |
749 | /// - Assume the cluster weights matrices are corrects | |
4ea3f013 | 750 | /// - Return a value of chi2 higher than the maximum allowed if computation failed |
7332f213 | 751 | AliDebug(1,"Enter ComputeGlobalChi2"); |
752 | ||
753 | if (!fTrackParamAtCluster) { | |
754 | AliWarning("no cluster attached to this track"); | |
4ea3f013 | 755 | return 2.*MaxChi2(); |
7332f213 | 756 | } |
ea94c18b | 757 | |
ea94c18b | 758 | Double_t chi2 = 0.; |
759 | ||
760 | if (accountForMCS) { | |
761 | ||
b709ac13 | 762 | // Check the weight matrices. If weight matrices are not available compute chi2 without MCS |
96ebe67e | 763 | if (!fClusterWeightsNonBending || !fClusterWeightsBending) { |
764 | AliWarning("cluster weights including multiple scattering effects are not available\n\t\t --> compute chi2 WITHOUT multiple scattering"); | |
b709ac13 | 765 | return ComputeGlobalChi2(kFALSE); |
766 | } | |
96ebe67e | 767 | Int_t nClusters = GetNClusters(); |
768 | if (fClusterWeightsNonBending->GetNrows() != nClusters || fClusterWeightsBending->GetNcols() != nClusters) { | |
769 | AliWarning("cluster weights including multiple scattering effects are not available\n\t\t --> compute chi2 WITHOUT multiple scattering"); | |
ea94c18b | 770 | return ComputeGlobalChi2(kFALSE); |
771 | } | |
772 | ||
773 | // Compute chi2 | |
96ebe67e | 774 | AliMUONVCluster *cluster; |
775 | Double_t *dX = new Double_t[nClusters]; | |
776 | Double_t *dY = new Double_t[nClusters]; | |
777 | AliMUONTrackParam* trackParamAtCluster; | |
778 | for (Int_t iCluster1 = 0; iCluster1 < nClusters; iCluster1++) { | |
779 | trackParamAtCluster = (AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(iCluster1); | |
780 | cluster = trackParamAtCluster->GetClusterPtr(); | |
781 | dX[iCluster1] = cluster->GetX() - trackParamAtCluster->GetNonBendingCoor(); | |
782 | dY[iCluster1] = cluster->GetY() - trackParamAtCluster->GetBendingCoor(); | |
783 | for (Int_t iCluster2 = 0; iCluster2 < iCluster1; iCluster2++) { | |
784 | chi2 += ((*fClusterWeightsNonBending)(iCluster1, iCluster2) + (*fClusterWeightsNonBending)(iCluster2, iCluster1)) * dX[iCluster1] * dX[iCluster2] + | |
785 | ((*fClusterWeightsBending)(iCluster1, iCluster2) + (*fClusterWeightsBending)(iCluster2, iCluster1)) * dY[iCluster1] * dY[iCluster2]; | |
ea94c18b | 786 | } |
96ebe67e | 787 | chi2 += ((*fClusterWeightsNonBending)(iCluster1, iCluster1) * dX[iCluster1] * dX[iCluster1]) + |
788 | ((*fClusterWeightsBending)(iCluster1, iCluster1) * dY[iCluster1] * dY[iCluster1]); | |
ea94c18b | 789 | } |
790 | delete [] dX; | |
791 | delete [] dY; | |
792 | ||
793 | } else { | |
794 | ||
96ebe67e | 795 | AliMUONVCluster *cluster; |
ea94c18b | 796 | Double_t dX, dY; |
96ebe67e | 797 | AliMUONTrackParam* trackParamAtCluster; |
798 | Int_t nClusters = GetNClusters(); | |
799 | for (Int_t iCluster = 0; iCluster < nClusters ; iCluster++) { | |
800 | trackParamAtCluster = (AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(iCluster); | |
801 | cluster = trackParamAtCluster->GetClusterPtr(); | |
802 | dX = cluster->GetX() - trackParamAtCluster->GetNonBendingCoor(); | |
803 | dY = cluster->GetY() - trackParamAtCluster->GetBendingCoor(); | |
804 | chi2 += dX * dX / cluster->GetErrX2() + dY * dY / cluster->GetErrY2(); | |
ea94c18b | 805 | } |
806 | ||
807 | } | |
808 | ||
809 | return chi2; | |
810 | ||
811 | } | |
812 | ||
813 | //__________________________________________________________________________ | |
96ebe67e | 814 | Bool_t AliMUONTrack::ComputeClusterWeights(TMatrixD* mcsCovariances) |
ea94c18b | 815 | { |
96ebe67e | 816 | /// Compute the weight matrices of the attached clusters, in non bending and bending direction, |
817 | /// accounting for multiple scattering correlations and cluster resolution | |
ea94c18b | 818 | /// - Use the provided MCS covariance matrix if any (otherwise build it temporarily) |
96ebe67e | 819 | /// - Assume that track parameters at each cluster are corrects |
ea94c18b | 820 | /// - Return kFALSE if computation failed |
7332f213 | 821 | AliDebug(1,"Enter ComputeClusterWeights1"); |
822 | ||
823 | if (!fTrackParamAtCluster) { | |
824 | AliWarning("no cluster attached to this track"); | |
825 | return kFALSE; | |
826 | } | |
ea94c18b | 827 | |
828 | // Alocate memory | |
96ebe67e | 829 | Int_t nClusters = GetNClusters(); |
830 | if (!fClusterWeightsNonBending) fClusterWeightsNonBending = new TMatrixD(nClusters,nClusters); | |
831 | if (!fClusterWeightsBending) fClusterWeightsBending = new TMatrixD(nClusters,nClusters); | |
ea94c18b | 832 | |
833 | // Compute weights matrices | |
96ebe67e | 834 | if (!ComputeClusterWeights(*fClusterWeightsNonBending, *fClusterWeightsBending, mcsCovariances)) return kFALSE; |
ea94c18b | 835 | |
836 | return kTRUE; | |
837 | ||
838 | } | |
839 | ||
840 | //__________________________________________________________________________ | |
c812dd48 | 841 | Bool_t AliMUONTrack::ComputeClusterWeights(TMatrixD& clusterWeightsNB, TMatrixD& clusterWeightsB, |
57e2ad1a | 842 | TMatrixD* mcsCovariances, const AliMUONVCluster* discardedCluster) const |
ea94c18b | 843 | { |
844 | /// Compute the weight matrices, in non bending and bending direction, | |
96ebe67e | 845 | /// of the other attached clusters assuming the discarded one does not exist |
846 | /// accounting for multiple scattering correlations and cluster resolution | |
ea94c18b | 847 | /// - Use the provided MCS covariance matrix if any (otherwise build it temporarily) |
848 | /// - Return kFALSE if computation failed | |
7332f213 | 849 | AliDebug(1,"Enter ComputeClusterWeights2"); |
ea94c18b | 850 | |
851 | // Check MCS covariance matrix and recompute it if need | |
96ebe67e | 852 | Int_t nClusters = GetNClusters(); |
ea94c18b | 853 | Bool_t deleteMCSCov = kFALSE; |
854 | if (!mcsCovariances) { | |
96ebe67e | 855 | mcsCovariances = new TMatrixD(nClusters,nClusters); |
ea94c18b | 856 | deleteMCSCov = kTRUE; |
857 | ComputeMCSCovariances(*mcsCovariances); | |
ea94c18b | 858 | } |
859 | ||
860 | // Resize the weights matrices; alocate memory | |
96ebe67e | 861 | if (discardedCluster) { |
c812dd48 | 862 | clusterWeightsNB.ResizeTo(nClusters-1,nClusters-1); |
863 | clusterWeightsB.ResizeTo(nClusters-1,nClusters-1); | |
ea94c18b | 864 | } else { |
c812dd48 | 865 | clusterWeightsNB.ResizeTo(nClusters,nClusters); |
866 | clusterWeightsB.ResizeTo(nClusters,nClusters); | |
ea94c18b | 867 | } |
868 | ||
869 | // Define variables | |
96ebe67e | 870 | AliMUONVCluster *cluster1, *cluster2; |
871 | Int_t iCurrentCluster1, iCurrentCluster2; | |
ea94c18b | 872 | |
873 | // Compute the covariance matrices | |
96ebe67e | 874 | iCurrentCluster1 = 0; |
875 | for (Int_t iCluster1 = 0; iCluster1 < nClusters; iCluster1++) { | |
876 | cluster1 = ((AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(iCluster1))->GetClusterPtr(); | |
ea94c18b | 877 | |
96ebe67e | 878 | if (cluster1 == discardedCluster) continue; |
ea94c18b | 879 | |
96ebe67e | 880 | // Loop over next clusters |
881 | iCurrentCluster2 = iCurrentCluster1; | |
882 | for (Int_t iCluster2 = iCluster1; iCluster2 < nClusters; iCluster2++) { | |
883 | cluster2 = ((AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(iCluster2))->GetClusterPtr(); | |
ea94c18b | 884 | |
96ebe67e | 885 | if (cluster2 == discardedCluster) continue; |
ea94c18b | 886 | |
ea94c18b | 887 | // Fill with MCS covariances |
c812dd48 | 888 | clusterWeightsNB(iCurrentCluster1, iCurrentCluster2) = (*mcsCovariances)(iCluster1,iCluster2); |
ea94c18b | 889 | |
890 | // Equal contribution from multiple scattering in non bending and bending directions | |
c812dd48 | 891 | clusterWeightsB(iCurrentCluster1, iCurrentCluster2) = clusterWeightsNB(iCurrentCluster1, iCurrentCluster2); |
ea94c18b | 892 | |
96ebe67e | 893 | // Add contribution from cluster resolution to diagonal element and symmetrize the matrix |
894 | if (iCurrentCluster1 == iCurrentCluster2) { | |
ea94c18b | 895 | |
896 | // In non bending plane | |
c812dd48 | 897 | clusterWeightsNB(iCurrentCluster1, iCurrentCluster1) += cluster1->GetErrX2(); |
ea94c18b | 898 | // In bending plane |
c812dd48 | 899 | clusterWeightsB(iCurrentCluster1, iCurrentCluster1) += cluster1->GetErrY2(); |
ea94c18b | 900 | |
901 | } else { | |
902 | ||
903 | // In non bending plane | |
c812dd48 | 904 | clusterWeightsNB(iCurrentCluster2, iCurrentCluster1) = clusterWeightsNB(iCurrentCluster1, iCurrentCluster2); |
ea94c18b | 905 | // In bending plane |
c812dd48 | 906 | clusterWeightsB(iCurrentCluster2, iCurrentCluster1) = clusterWeightsB(iCurrentCluster1, iCurrentCluster2); |
ea94c18b | 907 | |
908 | } | |
909 | ||
96ebe67e | 910 | iCurrentCluster2++; |
ea94c18b | 911 | } |
912 | ||
96ebe67e | 913 | iCurrentCluster1++; |
ea94c18b | 914 | } |
915 | ||
916 | // Inversion of covariance matrices to get the weights | |
c812dd48 | 917 | if (clusterWeightsNB.Determinant() != 0 && clusterWeightsB.Determinant() != 0) { |
918 | clusterWeightsNB.Invert(); | |
919 | clusterWeightsB.Invert(); | |
ea94c18b | 920 | } else { |
921 | AliWarning(" Determinant = 0"); | |
c812dd48 | 922 | clusterWeightsNB.ResizeTo(0,0); |
923 | clusterWeightsB.ResizeTo(0,0); | |
ea94c18b | 924 | if(deleteMCSCov) delete mcsCovariances; |
925 | return kFALSE; | |
926 | } | |
927 | ||
928 | if(deleteMCSCov) delete mcsCovariances; | |
929 | ||
930 | return kTRUE; | |
931 | ||
932 | } | |
933 | ||
934 | //__________________________________________________________________________ | |
935 | void AliMUONTrack::ComputeMCSCovariances(TMatrixD& mcsCovariances) const | |
936 | { | |
937 | /// Compute the multiple scattering covariance matrix | |
96ebe67e | 938 | /// (assume that track parameters at each cluster are corrects) |
7332f213 | 939 | AliDebug(1,"Enter ComputeMCSCovariances"); |
ea94c18b | 940 | |
b709ac13 | 941 | // Reset the size of the covariance matrix if needed |
96ebe67e | 942 | Int_t nClusters = GetNClusters(); |
943 | if (mcsCovariances.GetNrows() != nClusters) mcsCovariances.ResizeTo(nClusters,nClusters); | |
ea94c18b | 944 | |
945 | // Define variables | |
b709ac13 | 946 | Int_t nChambers = AliMUONConstants::NTrackingCh(); |
96ebe67e | 947 | AliMUONTrackParam* trackParamAtCluster; |
ea94c18b | 948 | AliMUONTrackParam extrapTrackParam; |
b709ac13 | 949 | Int_t currentChamber = 0, expectedChamber = 0, size = 0; |
950 | Double_t *mcsAngle2 = new Double_t[2*nChambers]; | |
951 | Double_t *zMCS = new Double_t[2*nChambers]; | |
96ebe67e | 952 | Int_t *indices = new Int_t[2*nClusters]; |
ea94c18b | 953 | |
954 | // Compute multiple scattering dispersion angle at each chamber | |
955 | // and save the z position where it is calculated | |
96ebe67e | 956 | for (Int_t iCluster = 0; iCluster < nClusters; iCluster++) { |
957 | trackParamAtCluster = (AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(iCluster); | |
ea94c18b | 958 | |
959 | // look for missing chambers if any | |
96ebe67e | 960 | currentChamber = trackParamAtCluster->GetClusterPtr()->GetChamberId(); |
ea94c18b | 961 | while (currentChamber > expectedChamber) { |
962 | ||
963 | // Save the z position where MCS dispersion is calculated | |
b709ac13 | 964 | zMCS[size] = AliMUONConstants::DefaultChamberZ(expectedChamber); |
ea94c18b | 965 | |
96ebe67e | 966 | // Do not take into account MCS in chambers prior the first cluster |
967 | if (iCluster > 0) { | |
ea94c18b | 968 | |
969 | // Get track parameters at missing chamber z | |
96ebe67e | 970 | extrapTrackParam = *trackParamAtCluster; |
971 | AliMUONTrackExtrap::ExtrapToZ(&extrapTrackParam, zMCS[size]); | |
ea94c18b | 972 | |
973 | // Save multiple scattering dispersion angle in missing chamber | |
4663da9f | 974 | mcsAngle2[size] = AliMUONTrackExtrap::GetMCSAngle2(extrapTrackParam,AliMUONConstants::ChamberThicknessInX0(expectedChamber),1.); |
ea94c18b | 975 | |
b709ac13 | 976 | } else mcsAngle2[size] = 0.; |
ea94c18b | 977 | |
978 | expectedChamber++; | |
b709ac13 | 979 | size++; |
ea94c18b | 980 | } |
981 | ||
982 | // Save z position where MCS dispersion is calculated | |
96ebe67e | 983 | zMCS[size] = trackParamAtCluster->GetZ(); |
ea94c18b | 984 | |
985 | // Save multiple scattering dispersion angle in current chamber | |
4663da9f | 986 | mcsAngle2[size] = AliMUONTrackExtrap::GetMCSAngle2(*trackParamAtCluster,AliMUONConstants::ChamberThicknessInX0(currentChamber),1.); |
b709ac13 | 987 | |
988 | // Save indice in zMCS array corresponding to the current cluster | |
96ebe67e | 989 | indices[iCluster] = size; |
ea94c18b | 990 | |
b709ac13 | 991 | expectedChamber = currentChamber + 1; |
992 | size++; | |
ea94c18b | 993 | } |
994 | ||
96ebe67e | 995 | // complete array of z if last cluster is on the last but one chamber |
b709ac13 | 996 | if (currentChamber != nChambers-1) zMCS[size++] = AliMUONConstants::DefaultChamberZ(nChambers-1); |
ea94c18b | 997 | |
998 | // Compute the covariance matrix | |
96ebe67e | 999 | for (Int_t iCluster1 = 0; iCluster1 < nClusters; iCluster1++) { |
ea94c18b | 1000 | |
96ebe67e | 1001 | for (Int_t iCluster2 = iCluster1; iCluster2 < nClusters; iCluster2++) { |
ea94c18b | 1002 | |
1003 | // Initialization to 0 (diagonal plus upper triangular part) | |
96ebe67e | 1004 | mcsCovariances(iCluster1,iCluster2) = 0.; |
ea94c18b | 1005 | |
1006 | // Compute contribution from multiple scattering in upstream chambers | |
96ebe67e | 1007 | for (Int_t k = 0; k < indices[iCluster1]; k++) { |
1008 | mcsCovariances(iCluster1,iCluster2) += (zMCS[indices[iCluster1]] - zMCS[k]) * (zMCS[indices[iCluster2]] - zMCS[k]) * mcsAngle2[k]; | |
ea94c18b | 1009 | } |
1010 | ||
1011 | // Symetrize the matrix | |
96ebe67e | 1012 | mcsCovariances(iCluster2,iCluster1) = mcsCovariances(iCluster1,iCluster2); |
ea94c18b | 1013 | } |
1014 | ||
1015 | } | |
1016 | ||
1017 | delete [] mcsAngle2; | |
1018 | delete [] zMCS; | |
b709ac13 | 1019 | delete [] indices; |
ea94c18b | 1020 | |
1021 | } | |
1022 | ||
208f139e | 1023 | //__________________________________________________________________________ |
5c15a68b | 1024 | Int_t AliMUONTrack::ClustersInCommon(AliMUONTrack* track, Int_t stMin, Int_t stMax) const |
208f139e | 1025 | { |
5c15a68b | 1026 | /// Returns the number of clusters in common in stations [stMin, stMax] |
89c8d66d | 1027 | /// between the current track ("this") and the track pointed to by "track". |
5c15a68b | 1028 | |
ce8cd162 | 1029 | if (!track || !track->fTrackParamAtCluster || !this->fTrackParamAtCluster) return 0; |
5c15a68b | 1030 | |
1031 | Int_t chMin = 2 * stMin; | |
1032 | Int_t chMax = 2 * stMax + 1; | |
89c8d66d | 1033 | Int_t clustersInCommon = 0; |
5c15a68b | 1034 | |
89c8d66d | 1035 | // Loop over clusters of first track |
5c15a68b | 1036 | Int_t nCl1 = this->GetNClusters(); |
1037 | for(Int_t iCl1 = 0; iCl1 < nCl1; iCl1++) { | |
1038 | AliMUONVCluster* cl1 = ((AliMUONTrackParam*) this->fTrackParamAtCluster->UncheckedAt(iCl1))->GetClusterPtr(); | |
1039 | ||
1040 | Int_t chCl1 = cl1->GetChamberId(); | |
1041 | if (chCl1 < chMin || chCl1 > chMax) continue; | |
1042 | ||
89c8d66d | 1043 | // Loop over clusters of second track |
5c15a68b | 1044 | Int_t nCl2 = track->GetNClusters(); |
1045 | for(Int_t iCl2 = 0; iCl2 < nCl2; iCl2++) { | |
1046 | AliMUONVCluster* cl2 = ((AliMUONTrackParam*) track->fTrackParamAtCluster->UncheckedAt(iCl2))->GetClusterPtr(); | |
1047 | ||
1048 | Int_t chCl2 = cl2->GetChamberId(); | |
1049 | if (chCl2 < chMin || chCl2 > chMax) continue; | |
1050 | ||
1051 | // Increment "clustersInCommon" if both clusters have the same ID | |
1052 | if (cl1->GetUniqueID() == cl2->GetUniqueID()) { | |
89c8d66d | 1053 | clustersInCommon++; |
1054 | break; | |
1055 | } | |
5c15a68b | 1056 | |
89c8d66d | 1057 | } |
5c15a68b | 1058 | |
89c8d66d | 1059 | } |
5c15a68b | 1060 | |
96ebe67e | 1061 | return clustersInCommon; |
208f139e | 1062 | } |
1063 | ||
5a240757 | 1064 | //__________________________________________________________________________ |
1065 | Int_t AliMUONTrack::GetNDF() const | |
1066 | { | |
1067 | /// return the number of degrees of freedom | |
1068 | ||
1069 | Int_t ndf = 2 * GetNClusters() - 5; | |
1070 | return (ndf > 0) ? ndf : 0; | |
1071 | } | |
1072 | ||
ea94c18b | 1073 | //__________________________________________________________________________ |
1074 | Double_t AliMUONTrack::GetNormalizedChi2() const | |
1075 | { | |
5a240757 | 1076 | /// return the chi2 value divided by the number of degrees of freedom (or FLT_MAX if ndf <= 0) |
ea94c18b | 1077 | |
5a240757 | 1078 | Double_t ndf = (Double_t) GetNDF(); |
4ea3f013 | 1079 | return (ndf > 0.) ? fGlobalChi2 / ndf : 2.*MaxChi2(); |
ea94c18b | 1080 | } |
1081 | ||
208f139e | 1082 | //__________________________________________________________________________ |
57e2ad1a | 1083 | Int_t AliMUONTrack::FindCompatibleClusters(const AliMUONTrack &track, Double_t sigmaCut, Bool_t compatibleCluster[10]) const |
b8dc484b | 1084 | { |
f202486b | 1085 | /// Try to match clusters from this track with clusters from the given track within the provided sigma cut: |
1086 | /// - Fill the array compatibleCluster[iCh] with kTRUE if a compatible cluster has been found in chamber iCh. | |
1087 | /// - Return the number of clusters of "this" track matched with one cluster of the given track. | |
96ebe67e | 1088 | AliMUONVCluster *cluster1, *cluster2; |
c59f70b9 | 1089 | Double_t chi2, dX, dY; |
61fed964 | 1090 | Double_t chi2Max = sigmaCut * sigmaCut; |
96ebe67e | 1091 | |
c59f70b9 | 1092 | // initialization |
1093 | Int_t nMatchClusters = 0; | |
96ebe67e | 1094 | for ( Int_t ch = 0; ch < AliMUONConstants::NTrackingCh(); ch++) compatibleCluster[ch] = kFALSE; |
b8dc484b | 1095 | |
f202486b | 1096 | if (!track.fTrackParamAtCluster || !this->fTrackParamAtCluster) return nMatchClusters; |
7332f213 | 1097 | |
96ebe67e | 1098 | // Loop over clusters of first track |
ce8cd162 | 1099 | Int_t nCl1 = this->GetNClusters(); |
1100 | for(Int_t iCl1 = 0; iCl1 < nCl1; iCl1++) { | |
1101 | cluster1 = static_cast<AliMUONTrackParam*>(this->fTrackParamAtCluster->UncheckedAt(iCl1))->GetClusterPtr(); | |
96ebe67e | 1102 | |
1103 | // Loop over clusters of second track | |
ce8cd162 | 1104 | Int_t nCl2 = track.GetNClusters(); |
1105 | for(Int_t iCl2 = 0; iCl2 < nCl2; iCl2++) { | |
1106 | cluster2 = static_cast<AliMUONTrackParam*>(track.fTrackParamAtCluster->UncheckedAt(iCl2))->GetClusterPtr(); | |
96ebe67e | 1107 | |
c59f70b9 | 1108 | // check DE Id |
1109 | if (cluster1->GetDetElemId() != cluster2->GetDetElemId()) continue; | |
96ebe67e | 1110 | |
2e2d0c44 | 1111 | // check local chi2 |
96ebe67e | 1112 | dX = cluster1->GetX() - cluster2->GetX(); |
96ebe67e | 1113 | dY = cluster1->GetY() - cluster2->GetY(); |
2e2d0c44 | 1114 | chi2 = dX * dX / (cluster1->GetErrX2() + cluster2->GetErrX2()) + dY * dY / (cluster1->GetErrY2() + cluster2->GetErrY2()); |
1115 | if (chi2 > 2. * chi2Max) continue; // 2 because 2 quantities in chi2 | |
96ebe67e | 1116 | |
1117 | compatibleCluster[cluster1->GetChamberId()] = kTRUE; | |
c59f70b9 | 1118 | nMatchClusters++; |
96ebe67e | 1119 | break; |
1120 | } | |
1121 | ||
b8dc484b | 1122 | } |
1123 | ||
c59f70b9 | 1124 | return nMatchClusters; |
8429a5e4 | 1125 | } |
1126 | ||
f202486b | 1127 | //__________________________________________________________________________ |
1128 | Bool_t AliMUONTrack::Match(AliMUONTrack &track, Double_t sigmaCut, Int_t &nMatchClusters) const | |
1129 | { | |
1130 | /// Try to match this track with the given track. Matching conditions: | |
1131 | /// - more than 50% of clusters from this track matched with clusters from the given track | |
1132 | /// - at least 1 cluster matched before and 1 cluster matched after the dipole | |
1133 | ||
1134 | Bool_t compTrack[10]; | |
1135 | nMatchClusters = FindCompatibleClusters(track, sigmaCut, compTrack); | |
1136 | ||
1137 | if ((compTrack[0] || compTrack[1] || compTrack[2] || compTrack[3]) && // at least 1 cluster matched in st 1 & 2 | |
1138 | (compTrack[6] || compTrack[7] || compTrack[8] || compTrack[9]) && // at least 1 cluster matched in st 4 & 5 | |
1139 | 2 * nMatchClusters > GetNClusters()) return kTRUE; // more than 50% of clusters matched | |
1140 | else return kFALSE; | |
1141 | ||
1142 | } | |
1143 | ||
96ebe67e | 1144 | //__________________________________________________________________________ |
1145 | void AliMUONTrack::SetTrackParamAtVertex(const AliMUONTrackParam* trackParam) | |
1146 | { | |
1147 | /// set track parameters at vertex | |
1148 | if (trackParam == 0x0) return; | |
1149 | if (fTrackParamAtVertex) *fTrackParamAtVertex = *trackParam; | |
1150 | else fTrackParamAtVertex = new AliMUONTrackParam(*trackParam); | |
1151 | } | |
1152 | ||
1153 | //__________________________________________________________________________ | |
1154 | void AliMUONTrack::RecursiveDump() const | |
a9e2aefa | 1155 | { |
96ebe67e | 1156 | /// Recursive dump of AliMUONTrack, i.e. with dump of trackParamAtCluster and attached clusters |
1157 | AliMUONTrackParam *trackParamAtCluster; | |
1158 | AliMUONVCluster *cluster; | |
de2cd600 | 1159 | cout << "Recursive dump of Track: " << this << endl; |
1160 | // Track | |
1161 | this->Dump(); | |
96ebe67e | 1162 | for (Int_t iCluster = 0; iCluster < GetNClusters(); iCluster++) { |
1163 | trackParamAtCluster = (AliMUONTrackParam*) ((*fTrackParamAtCluster)[iCluster]); | |
1164 | // trackParamAtCluster | |
1165 | cout << "trackParamAtCluster: " << trackParamAtCluster << " (index: " << iCluster << ")" << endl; | |
1166 | trackParamAtCluster->Dump(); | |
1167 | cluster = trackParamAtCluster->GetClusterPtr(); | |
1168 | // cluster | |
1169 | cout << "cluster: " << cluster << endl; | |
1170 | cluster->Print(); | |
a9e2aefa | 1171 | } |
de2cd600 | 1172 | return; |
a9e2aefa | 1173 | } |
04b5ea16 | 1174 | |
6464217e | 1175 | //_____________________________________________- |
d2b1e7bb | 1176 | void AliMUONTrack::Print(Option_t*) const |
6464217e | 1177 | { |
2457f726 | 1178 | /// Printing Track information |
d2b1e7bb | 1179 | |
7b318ae2 | 1180 | streamsize curW = cout.width(); |
1181 | streamsize curPrecision = cout.precision(); | |
96ebe67e | 1182 | cout << "<AliMUONTrack> No.Clusters=" << setw(2) << GetNClusters() << |
6464217e | 1183 | ", Match2Trig=" << setw(1) << GetMatchTrigger() << |
bdfb6eef | 1184 | ", LoTrgNum=" << setw(3) << LoCircuit() << |
d2b1e7bb | 1185 | ", Chi2-tracking-trigger=" << setw(8) << setprecision(5) << GetChi2MatchTrigger(); |
2e2d0c44 | 1186 | cout << Form(" HitTriggerPattern %x",fHitsPatternInTrigCh); |
1187 | cout << Form(" MClabel=%d",fTrackID) << endl; | |
7332f213 | 1188 | if (fTrackParamAtCluster) fTrackParamAtCluster->First()->Print("FULL"); |
7b318ae2 | 1189 | cout.width(curW); |
1190 | cout.precision(curPrecision); | |
6464217e | 1191 | } |
423b32ca | 1192 | |
1193 | //__________________________________________________________________________ | |
00d46f24 | 1194 | void AliMUONTrack::SetLocalTrigger(Int_t loCirc, Int_t loStripX, Int_t loStripY, Int_t loDev, Int_t loLpt, Int_t loHpt, UChar_t respWithoutChamber) |
423b32ca | 1195 | { |
1196 | /// pack the local trigger information and store | |
1197 | ||
01413742 | 1198 | if (loCirc < 0) return; |
423b32ca | 1199 | |
1200 | fLocalTrigger = 0; | |
1201 | fLocalTrigger += loCirc; | |
1202 | fLocalTrigger += loStripX << 8; | |
1203 | fLocalTrigger += loStripY << 13; | |
1204 | fLocalTrigger += loDev << 17; | |
1205 | fLocalTrigger += loLpt << 22; | |
1206 | fLocalTrigger += loHpt << 24; | |
00d46f24 | 1207 | fLocalTrigger += respWithoutChamber << 26; |
423b32ca | 1208 | |
1209 | } | |
1210 | ||
2e2d0c44 | 1211 | //__________________________________________________________________________ |
1212 | void AliMUONTrack::FindMCLabel() | |
1213 | { | |
1214 | /// Determine the MC label from the label of the attached clusters and fill fMCLabel data member: | |
1215 | /// More than 50% of clusters, including 1 before and 1 after the dipole, must share the same label | |
1216 | ||
1217 | Int_t nClusters = GetNClusters(); | |
1218 | Int_t halfCluster = nClusters/2; | |
1219 | ||
1220 | // reset MC label | |
1221 | fTrackID = -1; | |
1222 | ||
1223 | // loop over first clusters (if nClusters left < (nClusters-halfCluster) the conditions cannot be fulfilled) | |
1224 | for (Int_t iCluster1 = 0; iCluster1 < nClusters-halfCluster; iCluster1++) { | |
1225 | AliMUONVCluster* cluster1 = ((AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(iCluster1))->GetClusterPtr(); | |
1226 | ||
1227 | // if the first cluster is not on station 1 or 2 the conditions cannot be fulfilled | |
1228 | if (cluster1->GetChamberId() > 3) return; | |
1229 | ||
1230 | Int_t label1 = cluster1->GetMCLabel(); | |
1231 | if (label1 < 0) continue; | |
1232 | ||
1233 | Int_t nIdenticalLabel = 1; | |
1234 | ||
1235 | // Loop over next clusters | |
1236 | for (Int_t iCluster2 = iCluster1+1; iCluster2 < nClusters; iCluster2++) { | |
1237 | AliMUONVCluster* cluster2 = ((AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(iCluster2))->GetClusterPtr(); | |
1238 | ||
1239 | if (cluster2->GetMCLabel() != label1) continue; | |
1240 | ||
1241 | nIdenticalLabel++; | |
1242 | ||
1243 | // stop as soon as conditions are fulfilled | |
1244 | if (nIdenticalLabel > halfCluster && cluster2->GetChamberId() > 5) { | |
1245 | fTrackID = label1; | |
1246 | return; | |
1247 | } | |
1248 | ||
1249 | } | |
1250 | ||
1251 | } | |
1252 | ||
1253 | } | |
1254 |