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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 | ||
cdd730d0 | 40 | using std::setw; |
41 | using std::endl; | |
42 | using std::cout; | |
43 | using std::streamsize; | |
44 | using std::setprecision; | |
7945aae7 | 45 | /// \cond CLASSIMP |
63ed9c6b | 46 | ClassImp(AliMUONTrack) // Class implementation in ROOT context |
7945aae7 | 47 | /// \endcond |
63ed9c6b | 48 | |
4ea3f013 | 49 | |
50 | const Double_t AliMUONTrack::fgkMaxChi2 = 1.e10; ///< maximum chi2 above which the track can be considered as abnormal | |
51 | ||
52 | ||
63ed9c6b | 53 | //__________________________________________________________________________ |
30178c30 | 54 | AliMUONTrack::AliMUONTrack() |
54d7ba50 | 55 | : TObject(), |
7332f213 | 56 | fTrackParamAtCluster(0x0), |
208f139e | 57 | fFitWithVertex(kFALSE), |
96ebe67e | 58 | fVertexErrXY2(), |
ea94c18b | 59 | fFitWithMCS(kFALSE), |
96ebe67e | 60 | fClusterWeightsNonBending(0x0), |
61 | fClusterWeightsBending(0x0), | |
ea94c18b | 62 | fGlobalChi2(-1.), |
63 | fImproved(kFALSE), | |
7771752e | 64 | fMatchTrigger(-1), |
54d7ba50 | 65 | fChi2MatchTrigger(0.), |
2e2d0c44 | 66 | fTrackID(-1), |
96ebe67e | 67 | fTrackParamAtVertex(0x0), |
423b32ca | 68 | fHitsPatternInTrigCh(0), |
0a2dcc83 | 69 | fHitsPatternInTrigChTrk(0), |
5c15a68b | 70 | fLocalTrigger(0), |
71 | fConnected(kFALSE) | |
d837040f | 72 | { |
2457f726 | 73 | /// Default constructor |
96ebe67e | 74 | fVertexErrXY2[0] = 0.; |
75 | fVertexErrXY2[1] = 0.; | |
d837040f | 76 | } |
77 | ||
a9e2aefa | 78 | //__________________________________________________________________________ |
a0dc65b4 | 79 | AliMUONTrack::AliMUONTrack(AliMUONObjectPair *segment, Double_t bendingVertexDispersion) |
54d7ba50 | 80 | : TObject(), |
ce8cd162 | 81 | fTrackParamAtCluster(new TObjArray(20)), |
208f139e | 82 | fFitWithVertex(kFALSE), |
96ebe67e | 83 | fVertexErrXY2(), |
ea94c18b | 84 | fFitWithMCS(kFALSE), |
96ebe67e | 85 | fClusterWeightsNonBending(0x0), |
86 | fClusterWeightsBending(0x0), | |
ea94c18b | 87 | fGlobalChi2(0.), |
88 | fImproved(kFALSE), | |
7771752e | 89 | fMatchTrigger(-1), |
54d7ba50 | 90 | fChi2MatchTrigger(0.), |
2e2d0c44 | 91 | fTrackID(-1), |
96ebe67e | 92 | fTrackParamAtVertex(0x0), |
423b32ca | 93 | fHitsPatternInTrigCh(0), |
0a2dcc83 | 94 | fHitsPatternInTrigChTrk(0), |
5c15a68b | 95 | fLocalTrigger(0), |
96 | fConnected(kFALSE) | |
a9e2aefa | 97 | { |
96ebe67e | 98 | /// Constructor from two clusters |
de2cd600 | 99 | |
ce8cd162 | 100 | fTrackParamAtCluster->SetOwner(kTRUE); |
101 | ||
96ebe67e | 102 | fVertexErrXY2[0] = 0.; |
103 | fVertexErrXY2[1] = 0.; | |
208f139e | 104 | |
96ebe67e | 105 | // Pointers to clusters from the segment |
9bf6860b | 106 | AliMUONVCluster* firstCluster = (AliMUONVCluster*) segment->First(); |
107 | AliMUONVCluster* lastCluster = (AliMUONVCluster*) segment->Second(); | |
208f139e | 108 | |
ea94c18b | 109 | // Compute track parameters |
96ebe67e | 110 | Double_t z1 = firstCluster->GetZ(); |
111 | Double_t z2 = lastCluster->GetZ(); | |
112 | Double_t dZ = z1 - z2; | |
208f139e | 113 | // Non bending plane |
96ebe67e | 114 | Double_t nonBendingCoor1 = firstCluster->GetX(); |
115 | Double_t nonBendingCoor2 = lastCluster->GetX(); | |
ea94c18b | 116 | Double_t nonBendingSlope = (nonBendingCoor1 - nonBendingCoor2) / dZ; |
208f139e | 117 | // Bending plane |
96ebe67e | 118 | Double_t bendingCoor1 = firstCluster->GetY(); |
119 | Double_t bendingCoor2 = lastCluster->GetY(); | |
ea94c18b | 120 | Double_t bendingSlope = (bendingCoor1 - bendingCoor2) / dZ; |
208f139e | 121 | // Inverse bending momentum |
96ebe67e | 122 | Double_t bendingImpact = bendingCoor1 - z1 * bendingSlope; |
208f139e | 123 | Double_t inverseBendingMomentum = 1. / AliMUONTrackExtrap::GetBendingMomentumFromImpactParam(bendingImpact); |
ea94c18b | 124 | |
9bf6860b | 125 | // Set track parameters at first cluster |
96ebe67e | 126 | AliMUONTrackParam trackParamAtFirstCluster; |
127 | trackParamAtFirstCluster.SetZ(z1); | |
128 | trackParamAtFirstCluster.SetNonBendingCoor(nonBendingCoor1); | |
129 | trackParamAtFirstCluster.SetNonBendingSlope(nonBendingSlope); | |
130 | trackParamAtFirstCluster.SetBendingCoor(bendingCoor1); | |
131 | trackParamAtFirstCluster.SetBendingSlope(bendingSlope); | |
132 | trackParamAtFirstCluster.SetInverseBendingMomentum(inverseBendingMomentum); | |
208f139e | 133 | |
9bf6860b | 134 | // Set track parameters at last cluster |
96ebe67e | 135 | AliMUONTrackParam trackParamAtLastCluster; |
136 | trackParamAtLastCluster.SetZ(z2); | |
137 | trackParamAtLastCluster.SetNonBendingCoor(nonBendingCoor2); | |
138 | trackParamAtLastCluster.SetNonBendingSlope(nonBendingSlope); | |
139 | trackParamAtLastCluster.SetBendingCoor(bendingCoor2); | |
140 | trackParamAtLastCluster.SetBendingSlope(bendingSlope); | |
141 | trackParamAtLastCluster.SetInverseBendingMomentum(inverseBendingMomentum); | |
ea94c18b | 142 | |
9bf6860b | 143 | // Compute and set track parameters covariances at first cluster |
144 | TMatrixD paramCov(5,5); | |
145 | paramCov.Zero(); | |
208f139e | 146 | // Non bending plane |
9bf6860b | 147 | paramCov(0,0) = firstCluster->GetErrX2(); |
148 | paramCov(0,1) = firstCluster->GetErrX2() / dZ; | |
149 | paramCov(1,0) = paramCov(0,1); | |
150 | paramCov(1,1) = ( firstCluster->GetErrX2() + lastCluster->GetErrX2() ) / dZ / dZ; | |
208f139e | 151 | // Bending plane |
9bf6860b | 152 | paramCov(2,2) = firstCluster->GetErrY2(); |
153 | paramCov(2,3) = firstCluster->GetErrY2() / dZ; | |
154 | paramCov(3,2) = paramCov(2,3); | |
155 | paramCov(3,3) = ( firstCluster->GetErrY2() + lastCluster->GetErrY2() ) / dZ / dZ; | |
156 | // Inverse bending momentum (vertex resolution + bending slope resolution + 10% error on dipole parameters+field) | |
89c8d66d | 157 | if (AliMUONTrackExtrap::IsFieldON()) { |
158 | paramCov(4,4) = ( ( bendingVertexDispersion*bendingVertexDispersion + | |
159 | (z1 * z1 * lastCluster->GetErrY2() + z2 * z2 * firstCluster->GetErrY2()) / dZ / dZ) / | |
160 | bendingImpact / bendingImpact + 0.1 * 0.1) * inverseBendingMomentum * inverseBendingMomentum ; | |
161 | paramCov(2,4) = - z2 * firstCluster->GetErrY2() * inverseBendingMomentum / bendingImpact / dZ; | |
162 | paramCov(4,2) = paramCov(2,4); | |
163 | paramCov(3,4) = - (z1 * lastCluster->GetErrY2() + z2 * firstCluster->GetErrY2()) * inverseBendingMomentum / bendingImpact / dZ / dZ; | |
164 | paramCov(4,3) = paramCov(3,4); | |
165 | } else paramCov(4,4) = inverseBendingMomentum*inverseBendingMomentum; | |
9bf6860b | 166 | trackParamAtFirstCluster.SetCovariances(paramCov); |
ea94c18b | 167 | |
9bf6860b | 168 | // Compute and set track parameters covariances at last cluster |
89c8d66d | 169 | // Non bending plane |
170 | paramCov(0,0) = lastCluster->GetErrX2(); | |
171 | paramCov(0,1) = - lastCluster->GetErrX2() / dZ; | |
172 | paramCov(1,0) = paramCov(0,1); | |
173 | // Bending plane | |
174 | paramCov(2,2) = lastCluster->GetErrY2(); | |
175 | paramCov(2,3) = - lastCluster->GetErrY2() / dZ; | |
176 | paramCov(3,2) = paramCov(2,3); | |
177 | // Inverse bending momentum (vertex resolution + bending slope resolution + 10% error on dipole parameters+field) | |
178 | if (AliMUONTrackExtrap::IsFieldON()) { | |
179 | paramCov(2,4) = z1 * lastCluster->GetErrY2() * inverseBendingMomentum / bendingImpact / dZ; | |
180 | paramCov(4,2) = paramCov(2,4); | |
181 | } | |
9bf6860b | 182 | trackParamAtLastCluster.SetCovariances(paramCov); |
ea94c18b | 183 | |
96ebe67e | 184 | // Add track parameters at clusters |
185 | AddTrackParamAtCluster(trackParamAtFirstCluster,*firstCluster); | |
186 | AddTrackParamAtCluster(trackParamAtLastCluster,*lastCluster); | |
de2cd600 | 187 | |
a9e2aefa | 188 | } |
189 | ||
61fed964 | 190 | //__________________________________________________________________________ |
96ebe67e | 191 | AliMUONTrack::AliMUONTrack(const AliMUONTrack& track) |
ea94c18b | 192 | : TObject(track), |
7332f213 | 193 | fTrackParamAtCluster(0x0), |
ea94c18b | 194 | fFitWithVertex(track.fFitWithVertex), |
96ebe67e | 195 | fVertexErrXY2(), |
ea94c18b | 196 | fFitWithMCS(track.fFitWithMCS), |
96ebe67e | 197 | fClusterWeightsNonBending(0x0), |
198 | fClusterWeightsBending(0x0), | |
ea94c18b | 199 | fGlobalChi2(track.fGlobalChi2), |
200 | fImproved(track.fImproved), | |
201 | fMatchTrigger(track.fMatchTrigger), | |
ea94c18b | 202 | fChi2MatchTrigger(track.fChi2MatchTrigger), |
203 | fTrackID(track.fTrackID), | |
96ebe67e | 204 | fTrackParamAtVertex(0x0), |
ea94c18b | 205 | fHitsPatternInTrigCh(track.fHitsPatternInTrigCh), |
0a2dcc83 | 206 | fHitsPatternInTrigChTrk(track.fHitsPatternInTrigChTrk), |
5c15a68b | 207 | fLocalTrigger(track.fLocalTrigger), |
208 | fConnected(track.fConnected) | |
a9e2aefa | 209 | { |
2457f726 | 210 | ///copy constructor |
de2cd600 | 211 | |
ce8cd162 | 212 | // necessary to make a copy of the objects and not only the pointers in TObjArray. |
7332f213 | 213 | if (track.fTrackParamAtCluster) { |
ce8cd162 | 214 | fTrackParamAtCluster = new TObjArray(track.fTrackParamAtCluster->GetSize()); |
215 | fTrackParamAtCluster->SetOwner(kTRUE); | |
216 | for (Int_t i = 0; i < track.GetNClusters(); i++) | |
217 | fTrackParamAtCluster->AddLast(new AliMUONTrackParam(*static_cast<AliMUONTrackParam*>(track.fTrackParamAtCluster->UncheckedAt(i)))); | |
208f139e | 218 | } |
219 | ||
96ebe67e | 220 | // copy vertex resolution square used during the tracking procedure |
221 | fVertexErrXY2[0] = track.fVertexErrXY2[0]; | |
222 | fVertexErrXY2[1] = track.fVertexErrXY2[1]; | |
208f139e | 223 | |
96ebe67e | 224 | // copy cluster weights matrices if any |
225 | if (track.fClusterWeightsNonBending) fClusterWeightsNonBending = new TMatrixD(*(track.fClusterWeightsNonBending)); | |
226 | if (track.fClusterWeightsBending) fClusterWeightsBending = new TMatrixD(*(track.fClusterWeightsBending)); | |
ea94c18b | 227 | |
96ebe67e | 228 | // copy track parameters at vertex if any |
229 | if (track.fTrackParamAtVertex) fTrackParamAtVertex = new AliMUONTrackParam(*(track.fTrackParamAtVertex)); | |
208f139e | 230 | |
a9e2aefa | 231 | } |
232 | ||
956019b6 | 233 | //__________________________________________________________________________ |
ea94c18b | 234 | AliMUONTrack & AliMUONTrack::operator=(const AliMUONTrack& track) |
a9e2aefa | 235 | { |
2457f726 | 236 | /// Asignment operator |
30178c30 | 237 | // check assignement to self |
ea94c18b | 238 | if (this == &track) |
a9e2aefa | 239 | return *this; |
61adb9bd | 240 | |
30178c30 | 241 | // base class assignement |
ea94c18b | 242 | TObject::operator=(track); |
7332f213 | 243 | |
244 | // clear memory | |
245 | Clear(); | |
246 | ||
ce8cd162 | 247 | // necessary to make a copy of the objects and not only the pointers in TObjArray |
7332f213 | 248 | if (track.fTrackParamAtCluster) { |
ce8cd162 | 249 | fTrackParamAtCluster = new TObjArray(track.fTrackParamAtCluster->GetSize()); |
250 | fTrackParamAtCluster->SetOwner(kTRUE); | |
251 | for (Int_t i = 0; i < track.GetNClusters(); i++) | |
252 | fTrackParamAtCluster->AddLast(new AliMUONTrackParam(*static_cast<AliMUONTrackParam*>(track.fTrackParamAtCluster->UncheckedAt(i)))); | |
208f139e | 253 | } |
254 | ||
96ebe67e | 255 | // copy cluster weights matrix if any |
256 | if (track.fClusterWeightsNonBending) { | |
257 | if (fClusterWeightsNonBending) { | |
258 | fClusterWeightsNonBending->ResizeTo(*(track.fClusterWeightsNonBending)); | |
259 | *fClusterWeightsNonBending = *(track.fClusterWeightsNonBending); | |
260 | } else fClusterWeightsNonBending = new TMatrixD(*(track.fClusterWeightsNonBending)); | |
208f139e | 261 | } |
262 | ||
96ebe67e | 263 | // copy cluster weights matrix if any |
264 | if (track.fClusterWeightsBending) { | |
265 | if (fClusterWeightsBending) { | |
266 | fClusterWeightsBending->ResizeTo(*(track.fClusterWeightsBending)); | |
267 | *fClusterWeightsBending = *(track.fClusterWeightsBending); | |
268 | } else fClusterWeightsBending = new TMatrixD(*(track.fClusterWeightsBending)); | |
ea94c18b | 269 | } |
270 | ||
96ebe67e | 271 | // copy track parameters at vertex if any |
272 | if (track.fTrackParamAtVertex) { | |
273 | if (fTrackParamAtVertex) *fTrackParamAtVertex = *(track.fTrackParamAtVertex); | |
274 | else fTrackParamAtVertex = new AliMUONTrackParam(*(track.fTrackParamAtVertex)); | |
ea94c18b | 275 | } |
de2cd600 | 276 | |
ea94c18b | 277 | fFitWithVertex = track.fFitWithVertex; |
96ebe67e | 278 | fVertexErrXY2[0] = track.fVertexErrXY2[0]; |
279 | fVertexErrXY2[1] = track.fVertexErrXY2[1]; | |
ea94c18b | 280 | fFitWithMCS = track.fFitWithMCS; |
281 | fGlobalChi2 = track.fGlobalChi2; | |
282 | fImproved = track.fImproved; | |
283 | fMatchTrigger = track.fMatchTrigger; | |
ea94c18b | 284 | fChi2MatchTrigger = track.fChi2MatchTrigger; |
285 | fTrackID = track.fTrackID; | |
286 | fHitsPatternInTrigCh = track.fHitsPatternInTrigCh; | |
0a2dcc83 | 287 | fHitsPatternInTrigChTrk = track.fHitsPatternInTrigChTrk; |
ea94c18b | 288 | fLocalTrigger = track.fLocalTrigger; |
5c15a68b | 289 | fConnected = track.fConnected; |
30178c30 | 290 | |
61adb9bd | 291 | return *this; |
a9e2aefa | 292 | } |
293 | ||
8429a5e4 | 294 | //__________________________________________________________________________ |
ea94c18b | 295 | AliMUONTrack::~AliMUONTrack() |
296 | { | |
297 | /// Destructor | |
96ebe67e | 298 | delete fTrackParamAtCluster; |
299 | delete fClusterWeightsNonBending; | |
300 | delete fClusterWeightsBending; | |
301 | delete fTrackParamAtVertex; | |
ea94c18b | 302 | } |
303 | ||
304 | //__________________________________________________________________________ | |
ce8cd162 | 305 | void AliMUONTrack::Clear(Option_t* /*opt*/) |
ea94c18b | 306 | { |
307 | /// Clear arrays | |
ce8cd162 | 308 | delete fTrackParamAtCluster; fTrackParamAtCluster = 0x0; |
96ebe67e | 309 | delete fClusterWeightsNonBending; fClusterWeightsNonBending = 0x0; |
310 | delete fClusterWeightsBending; fClusterWeightsBending = 0x0; | |
311 | delete fTrackParamAtVertex; fTrackParamAtVertex = 0x0; | |
ea94c18b | 312 | } |
313 | ||
b1fea02e | 314 | //__________________________________________________________________________ |
315 | void AliMUONTrack::Reset() | |
316 | { | |
317 | /// Reset to default values | |
318 | SetUniqueID(0); | |
319 | fFitWithVertex = kFALSE; | |
320 | fVertexErrXY2[0] = 0.; | |
321 | fVertexErrXY2[1] = 0.; | |
322 | fFitWithMCS = kFALSE; | |
323 | fGlobalChi2 = -1.; | |
324 | fImproved = kFALSE; | |
325 | fMatchTrigger = -1; | |
b1fea02e | 326 | fChi2MatchTrigger = 0.; |
2e2d0c44 | 327 | fTrackID = -1; |
b1fea02e | 328 | fHitsPatternInTrigCh = 0; |
0a2dcc83 | 329 | fHitsPatternInTrigChTrk = 0; |
b1fea02e | 330 | fLocalTrigger = 0; |
5c15a68b | 331 | fConnected = kFALSE; |
b1fea02e | 332 | delete fTrackParamAtCluster; fTrackParamAtCluster = 0x0; |
333 | delete fClusterWeightsNonBending; fClusterWeightsNonBending = 0x0; | |
334 | delete fClusterWeightsBending; fClusterWeightsBending = 0x0; | |
335 | delete fTrackParamAtVertex; fTrackParamAtVertex = 0x0; | |
336 | } | |
337 | ||
7332f213 | 338 | //__________________________________________________________________________ |
ce8cd162 | 339 | TObjArray* AliMUONTrack::GetTrackParamAtCluster() const |
7332f213 | 340 | { |
341 | /// return array of track parameters at cluster (create it if needed) | |
ce8cd162 | 342 | if (!fTrackParamAtCluster) { |
343 | fTrackParamAtCluster = new TObjArray(20); | |
344 | fTrackParamAtCluster->SetOwner(kTRUE); | |
345 | } | |
7332f213 | 346 | return fTrackParamAtCluster; |
347 | } | |
348 | ||
ea94c18b | 349 | //__________________________________________________________________________ |
96ebe67e | 350 | void AliMUONTrack::AddTrackParamAtCluster(const AliMUONTrackParam &trackParam, AliMUONVCluster &cluster, Bool_t copy) |
8429a5e4 | 351 | { |
96ebe67e | 352 | /// Copy given track parameters into a new TrackParamAtCluster |
353 | /// Link parameters with the associated cluster | |
354 | /// If copy=kTRUE: the cluster is copied then passed the trackParam which become its owner | |
355 | /// otherwise: make sure to do not delete the cluster until it is used by the track | |
356 | ||
357 | // check chamber ID of the associated cluster | |
358 | if (cluster.GetChamberId() < 0 || cluster.GetChamberId() > AliMUONConstants::NTrackingCh()) { | |
359 | AliError(Form("Chamber ID of the associated cluster is not valid (ChamberId=%d)",cluster.GetChamberId())); | |
ea94c18b | 360 | return; |
361 | } | |
362 | ||
96ebe67e | 363 | // check whether track parameters are given at the correct cluster z position |
820b4d9e | 364 | if (TMath::Abs(cluster.GetZ() - trackParam.GetZ())>1.e-5) { // AU |
96ebe67e | 365 | AliError("track parameters are given at a different z position than the one of the associated cluster"); |
ea94c18b | 366 | return; |
367 | } | |
368 | ||
96ebe67e | 369 | // add parameters to the array of track parameters |
ce8cd162 | 370 | if (!fTrackParamAtCluster) { |
371 | fTrackParamAtCluster = new TObjArray(20); | |
372 | fTrackParamAtCluster->SetOwner(kTRUE); | |
373 | } | |
374 | AliMUONTrackParam* trackParamAtCluster = new AliMUONTrackParam(trackParam); | |
375 | fTrackParamAtCluster->AddLast(trackParamAtCluster); | |
96ebe67e | 376 | |
377 | // link parameters with the associated cluster or its copy | |
378 | if (copy) { | |
1467f4ba | 379 | AliMUONVCluster *clusterCopy = static_cast<AliMUONVCluster*>(cluster.Clone()); |
96ebe67e | 380 | trackParamAtCluster->SetClusterPtr(clusterCopy, kTRUE); |
381 | } else trackParamAtCluster->SetClusterPtr(&cluster); | |
7332f213 | 382 | |
383 | // sort the array of track parameters | |
384 | fTrackParamAtCluster->Sort(); | |
ea94c18b | 385 | } |
386 | ||
956019b6 | 387 | //__________________________________________________________________________ |
96ebe67e | 388 | void AliMUONTrack::RemoveTrackParamAtCluster(AliMUONTrackParam *trackParam) |
956019b6 | 389 | { |
ce8cd162 | 390 | /// Remove trackParam from the array of TrackParamAtCluster and delete it since the array is owner |
391 | ||
392 | if (fTrackParamAtCluster) { | |
393 | ||
394 | AliMUONTrackParam* trackParamAtCluster = static_cast<AliMUONTrackParam*>(fTrackParamAtCluster->Remove(trackParam)); | |
395 | ||
396 | if (trackParamAtCluster) { | |
397 | ||
398 | // clean memory | |
399 | delete trackParamAtCluster; | |
400 | ||
401 | // remove hole | |
402 | fTrackParamAtCluster->Compress(); | |
403 | ||
404 | } else AliWarning("object to remove does not exist in array fTrackParamAtCluster"); | |
405 | ||
406 | } else AliWarning("array fTrackParamAtCluster does not exist"); | |
de2cd600 | 407 | |
04b5ea16 | 408 | } |
409 | ||
ea94c18b | 410 | //__________________________________________________________________________ |
4ea3f013 | 411 | Bool_t AliMUONTrack::UpdateTrackParamAtCluster() |
d2b1e7bb | 412 | { |
96ebe67e | 413 | /// Update track parameters at each attached cluster |
4ea3f013 | 414 | /// Return kFALSE in case of failure (i.e. extrapolation problem) |
ea94c18b | 415 | |
ce8cd162 | 416 | Int_t nClusters = GetNClusters(); |
417 | if (nClusters == 0) { | |
96ebe67e | 418 | AliWarning("no cluster attached to the track"); |
4ea3f013 | 419 | return kFALSE; |
ea94c18b | 420 | } |
421 | ||
4ea3f013 | 422 | Bool_t extrapStatus = kTRUE; |
ce8cd162 | 423 | AliMUONTrackParam* startingTrackParam = static_cast<AliMUONTrackParam*>(fTrackParamAtCluster->UncheckedAt(0)); |
424 | ||
425 | for (Int_t i = 1; i < nClusters; i++) { | |
426 | AliMUONTrackParam* trackParamAtCluster = static_cast<AliMUONTrackParam*>(fTrackParamAtCluster->UncheckedAt(i)); | |
ea94c18b | 427 | |
428 | // reset track parameters and their covariances | |
96ebe67e | 429 | trackParamAtCluster->SetParameters(startingTrackParam->GetParameters()); |
430 | trackParamAtCluster->SetZ(startingTrackParam->GetZ()); | |
ea94c18b | 431 | |
432 | // extrapolation to the given z | |
4ea3f013 | 433 | if (!AliMUONTrackExtrap::ExtrapToZ(trackParamAtCluster, trackParamAtCluster->GetClusterPtr()->GetZ())) extrapStatus = kFALSE; |
ea94c18b | 434 | |
435 | // prepare next step | |
96ebe67e | 436 | startingTrackParam = trackParamAtCluster; |
ea94c18b | 437 | } |
438 | ||
4ea3f013 | 439 | // set global chi2 to max value in case of problem during track extrapolation |
440 | if (!extrapStatus) SetGlobalChi2(2.*MaxChi2()); | |
441 | return extrapStatus; | |
442 | ||
d2b1e7bb | 443 | } |
444 | ||
b8dc484b | 445 | //__________________________________________________________________________ |
4ea3f013 | 446 | Bool_t AliMUONTrack::UpdateCovTrackParamAtCluster() |
ea94c18b | 447 | { |
96ebe67e | 448 | /// Update track parameters and their covariances at each attached cluster |
449 | /// Include effects of multiple scattering in chambers | |
4ea3f013 | 450 | /// Return kFALSE in case of failure (i.e. extrapolation problem) |
ea94c18b | 451 | |
ce8cd162 | 452 | Int_t nClusters = GetNClusters(); |
453 | if (nClusters == 0) { | |
96ebe67e | 454 | AliWarning("no cluster attached to the track"); |
4ea3f013 | 455 | return kFALSE; |
ea94c18b | 456 | } |
457 | ||
4ea3f013 | 458 | Bool_t extrapStatus = kTRUE; |
ce8cd162 | 459 | AliMUONTrackParam* startingTrackParam = static_cast<AliMUONTrackParam*>(fTrackParamAtCluster->UncheckedAt(0)); |
96ebe67e | 460 | Int_t expectedChamber = startingTrackParam->GetClusterPtr()->GetChamberId() + 1; |
461 | Int_t currentChamber; | |
ce8cd162 | 462 | |
463 | for (Int_t i = 1; i < nClusters; i++) { | |
464 | AliMUONTrackParam* trackParamAtCluster = static_cast<AliMUONTrackParam*>(fTrackParamAtCluster->UncheckedAt(i)); | |
ea94c18b | 465 | |
466 | // reset track parameters and their covariances | |
96ebe67e | 467 | trackParamAtCluster->SetParameters(startingTrackParam->GetParameters()); |
468 | trackParamAtCluster->SetZ(startingTrackParam->GetZ()); | |
469 | trackParamAtCluster->SetCovariances(startingTrackParam->GetCovariances()); | |
ea94c18b | 470 | |
96ebe67e | 471 | // add MCS effect |
4663da9f | 472 | AliMUONTrackExtrap::AddMCSEffect(trackParamAtCluster,AliMUONConstants::ChamberThicknessInX0(expectedChamber-1),-1.); |
96ebe67e | 473 | |
474 | // add MCS in missing chambers if any | |
475 | currentChamber = trackParamAtCluster->GetClusterPtr()->GetChamberId(); | |
476 | while (currentChamber > expectedChamber) { | |
477 | // extrapolation to the missing chamber | |
4ea3f013 | 478 | if (!AliMUONTrackExtrap::ExtrapToZCov(trackParamAtCluster, AliMUONConstants::DefaultChamberZ(expectedChamber))) extrapStatus = kFALSE; |
96ebe67e | 479 | // add MCS effect |
4663da9f | 480 | AliMUONTrackExtrap::AddMCSEffect(trackParamAtCluster,AliMUONConstants::ChamberThicknessInX0(expectedChamber),-1.); |
96ebe67e | 481 | expectedChamber++; |
482 | } | |
483 | ||
484 | // extrapolation to the z of the current cluster | |
4ea3f013 | 485 | if (!AliMUONTrackExtrap::ExtrapToZCov(trackParamAtCluster, trackParamAtCluster->GetClusterPtr()->GetZ())) extrapStatus = kFALSE; |
ea94c18b | 486 | |
487 | // prepare next step | |
96ebe67e | 488 | expectedChamber = currentChamber + 1; |
489 | startingTrackParam = trackParamAtCluster; | |
ea94c18b | 490 | } |
96ebe67e | 491 | |
4ea3f013 | 492 | // set global chi2 to max value in case of problem during track extrapolation |
493 | if (!extrapStatus) SetGlobalChi2(2.*MaxChi2()); | |
494 | return extrapStatus; | |
495 | ||
7332f213 | 496 | } |
497 | ||
498 | //__________________________________________________________________________ | |
f202486b | 499 | Bool_t AliMUONTrack::IsValid(UInt_t requestedStationMask, Bool_t request2ChInSameSt45) |
7332f213 | 500 | { |
3d7acbb7 | 501 | /// check the validity of the current track: |
502 | /// at least one cluster per requested station | |
503 | /// and at least 2 chambers in stations 4 & 5 that contain cluster(s) | |
f202486b | 504 | /// + if request2ChInSameSt45 = kTRUE: 2 chambers hit in the same station (4 or 5) |
7332f213 | 505 | |
506 | Int_t nClusters = GetNClusters(); | |
507 | AliMUONTrackParam *trackParam; | |
f202486b | 508 | Int_t currentCh, currentSt, previousCh = -1, nChHitInSt4 = 0, nChHitInSt5 = 0; |
ad3c6eda | 509 | UInt_t presentStationMask(0); |
7332f213 | 510 | |
3d7acbb7 | 511 | // first loop over clusters |
ad3c6eda | 512 | for (Int_t i = 0; i < nClusters; i++) { |
7332f213 | 513 | trackParam = (AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(i); |
3d7acbb7 | 514 | |
515 | currentCh = trackParam->GetClusterPtr()->GetChamberId(); | |
516 | currentSt = currentCh/2; | |
517 | ||
518 | // build present station mask | |
519 | presentStationMask |= ( 1 << currentSt ); | |
520 | ||
f202486b | 521 | // count the number of chambers hit in station 4 that contain cluster(s) |
522 | if (currentSt == 3 && currentCh != previousCh) { | |
523 | nChHitInSt4++; | |
524 | previousCh = currentCh; | |
525 | } | |
526 | ||
527 | // count the number of chambers hit in station 5 that contain cluster(s) | |
528 | if (currentSt == 4 && currentCh != previousCh) { | |
529 | nChHitInSt5++; | |
3d7acbb7 | 530 | previousCh = currentCh; |
531 | } | |
532 | ||
7332f213 | 533 | } |
534 | ||
f202486b | 535 | // at least one cluster per requested station |
536 | if ((requestedStationMask & presentStationMask) != requestedStationMask) return kFALSE; | |
537 | ||
538 | // 2 chambers hit in the same station (4 or 5) | |
539 | if (request2ChInSameSt45) return (nChHitInSt4 == 2 || nChHitInSt5 == 2); | |
540 | // or 2 chambers hit in station 4 & 5 together | |
541 | else return (nChHitInSt4+nChHitInSt5 >= 2); | |
542 | ||
7332f213 | 543 | } |
544 | ||
545 | //__________________________________________________________________________ | |
a0dc65b4 | 546 | void AliMUONTrack::TagRemovableClusters(UInt_t requestedStationMask) { |
7332f213 | 547 | /// Identify clusters that can be removed from the track, |
3d7acbb7 | 548 | /// with the only requirements to have at least 1 cluster per requested station |
549 | /// and at least 2 chambers over 4 in stations 4 & 5 that contain cluster(s) | |
7332f213 | 550 | |
551 | Int_t nClusters = GetNClusters(); | |
552 | AliMUONTrackParam *trackParam, *nextTrackParam; | |
3d7acbb7 | 553 | Int_t currentCh, nextCh, currentSt, nextSt, previousCh = -1, nChHitInSt45 = 0; |
7332f213 | 554 | |
3d7acbb7 | 555 | // first loop over clusters |
7332f213 | 556 | for (Int_t i = 0; i < nClusters; i++) { |
557 | trackParam = (AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(i); | |
3d7acbb7 | 558 | |
559 | currentCh = trackParam->GetClusterPtr()->GetChamberId(); | |
560 | currentSt = currentCh/2; | |
561 | ||
562 | // reset flags to kFALSE for all clusters in required station | |
563 | if ((1 << currentSt) & requestedStationMask) trackParam->SetRemovable(kFALSE); | |
9bf6860b | 564 | else trackParam->SetRemovable(kTRUE); |
3d7acbb7 | 565 | |
566 | // count the number of chambers in station 4 & 5 that contain cluster(s) | |
567 | if (currentCh > 5 && currentCh != previousCh) { | |
568 | nChHitInSt45++; | |
569 | previousCh = currentCh; | |
570 | } | |
571 | ||
7332f213 | 572 | } |
573 | ||
3d7acbb7 | 574 | // second loop over clusters |
7332f213 | 575 | for (Int_t i = 0; i < nClusters; i++) { |
576 | trackParam = (AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(i); | |
577 | ||
578 | currentCh = trackParam->GetClusterPtr()->GetChamberId(); | |
3d7acbb7 | 579 | currentSt = currentCh/2; |
7332f213 | 580 | |
3d7acbb7 | 581 | // make sure they are more than 2 clusters in 2 different chambers of stations 4 & 5 |
582 | // but 2 clusters in he same chamber will still be flagged as removable | |
583 | if (nChHitInSt45 < 3 && currentSt > 2) { | |
7332f213 | 584 | |
3d7acbb7 | 585 | if (i == nClusters-1) { |
586 | ||
587 | trackParam->SetRemovable(kFALSE); | |
7332f213 | 588 | |
3d7acbb7 | 589 | } else { |
590 | ||
591 | nextTrackParam = (AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(i+1); | |
592 | nextCh = nextTrackParam->GetClusterPtr()->GetChamberId(); | |
593 | ||
594 | // set clusters in the same chamber as being removable | |
595 | if (nextCh == currentCh) { | |
596 | trackParam->SetRemovable(kTRUE); | |
597 | nextTrackParam->SetRemovable(kTRUE); | |
598 | i++; // skip cluster already checked | |
599 | } else { | |
600 | trackParam->SetRemovable(kFALSE); | |
601 | } | |
602 | ||
603 | } | |
7332f213 | 604 | |
3d7acbb7 | 605 | } else { |
606 | ||
607 | // skip clusters already flag as removable | |
608 | if (trackParam->IsRemovable()) continue; | |
609 | ||
610 | // loop over next track parameters | |
611 | for (Int_t j = i+1; j < nClusters; j++) { | |
612 | nextTrackParam = (AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(j); | |
613 | ||
614 | nextCh = nextTrackParam->GetClusterPtr()->GetChamberId(); | |
615 | nextSt = nextCh/2; | |
616 | ||
617 | // set clusters in the same station as being removable | |
618 | if (nextSt == currentSt) { | |
619 | trackParam->SetRemovable(kTRUE); | |
620 | nextTrackParam->SetRemovable(kTRUE); | |
621 | i++; // skip cluster already checked | |
622 | } | |
623 | ||
624 | } | |
7332f213 | 625 | |
626 | } | |
3d7acbb7 | 627 | |
7332f213 | 628 | } |
629 | ||
208f139e | 630 | } |
631 | ||
ea94c18b | 632 | //__________________________________________________________________________ |
633 | Bool_t AliMUONTrack::ComputeLocalChi2(Bool_t accountForMCS) | |
634 | { | |
96ebe67e | 635 | /// Compute each cluster contribution to the chi2 of the track |
ea94c18b | 636 | /// accounting for multiple scattering or not according to the flag |
96ebe67e | 637 | /// - Also recompute the weight matrices of the attached clusters if accountForMCS=kTRUE |
638 | /// - Assume that track parameters at each cluster are corrects | |
ea94c18b | 639 | /// - Return kFALSE if computation failed |
7332f213 | 640 | AliDebug(1,"Enter ComputeLocalChi2"); |
641 | ||
642 | if (!fTrackParamAtCluster) { | |
643 | AliWarning("no cluster attached to this track"); | |
644 | return kFALSE; | |
645 | } | |
ea94c18b | 646 | |
ea94c18b | 647 | if (accountForMCS) { // Compute local chi2 taking into account multiple scattering effects |
648 | ||
649 | // Compute MCS covariance matrix only once | |
96ebe67e | 650 | Int_t nClusters = GetNClusters(); |
651 | TMatrixD mcsCovariances(nClusters,nClusters); | |
ea94c18b | 652 | ComputeMCSCovariances(mcsCovariances); |
653 | ||
96ebe67e | 654 | // Make sure cluster weights are consistent with following calculations |
655 | if (!ComputeClusterWeights(&mcsCovariances)) { | |
ea94c18b | 656 | AliWarning("cannot take into account the multiple scattering effects"); |
657 | return ComputeLocalChi2(kFALSE); | |
658 | } | |
659 | ||
660 | // Compute chi2 of the track | |
661 | Double_t globalChi2 = ComputeGlobalChi2(kTRUE); | |
662 | if (globalChi2 < 0.) return kFALSE; | |
663 | ||
96ebe67e | 664 | // Loop over removable clusters and compute their local chi2 |
ce8cd162 | 665 | AliMUONTrackParam* trackParamAtCluster; |
96ebe67e | 666 | AliMUONTrackParam* trackParamAtCluster1; |
667 | AliMUONVCluster *cluster, *discardedCluster; | |
668 | Int_t iCluster1, iCluster2, iCurrentCluster1, iCurrentCluster2; | |
c812dd48 | 669 | TMatrixD clusterWeightsNB(nClusters-1,nClusters-1); |
670 | TMatrixD clusterWeightsB(nClusters-1,nClusters-1); | |
96ebe67e | 671 | Double_t *dX = new Double_t[nClusters-1]; |
672 | Double_t *dY = new Double_t[nClusters-1]; | |
ea94c18b | 673 | Double_t globalChi2b; |
ce8cd162 | 674 | for (Int_t iCluster = 0; iCluster < nClusters ; iCluster++) { |
675 | trackParamAtCluster = static_cast<AliMUONTrackParam*>(fTrackParamAtCluster->UncheckedAt(iCluster)); | |
ea94c18b | 676 | |
96ebe67e | 677 | discardedCluster = trackParamAtCluster->GetClusterPtr(); |
ea94c18b | 678 | |
96ebe67e | 679 | // Recompute cluster weights without the current cluster |
c812dd48 | 680 | if (!ComputeClusterWeights(clusterWeightsNB, clusterWeightsB, &mcsCovariances, discardedCluster)) { |
ea94c18b | 681 | AliWarning("cannot take into account the multiple scattering effects"); |
96ebe67e | 682 | delete [] dX; |
683 | delete [] dY; | |
684 | return ComputeLocalChi2(kFALSE); | |
ea94c18b | 685 | } |
686 | ||
96ebe67e | 687 | // Compute track chi2 without the current cluster |
ea94c18b | 688 | globalChi2b = 0.; |
96ebe67e | 689 | iCurrentCluster1 = 0; |
690 | for (iCluster1 = 0; iCluster1 < nClusters ; iCluster1++) { | |
691 | trackParamAtCluster1 = (AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(iCluster1); | |
692 | cluster = trackParamAtCluster1->GetClusterPtr(); | |
ea94c18b | 693 | |
96ebe67e | 694 | if (cluster == discardedCluster) continue; |
ea94c18b | 695 | |
696 | // Compute and save residuals | |
96ebe67e | 697 | dX[iCurrentCluster1] = cluster->GetX() - trackParamAtCluster1->GetNonBendingCoor(); |
698 | dY[iCurrentCluster1] = cluster->GetY() - trackParamAtCluster1->GetBendingCoor(); | |
ea94c18b | 699 | |
96ebe67e | 700 | iCurrentCluster2 = 0; |
701 | for (iCluster2 = 0; iCluster2 < iCluster1; iCluster2++) { | |
702 | cluster = ((AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(iCluster2))->GetClusterPtr(); | |
ea94c18b | 703 | |
96ebe67e | 704 | if (cluster == discardedCluster) continue; |
ea94c18b | 705 | |
706 | // Add contribution from covariances | |
c812dd48 | 707 | globalChi2b += (clusterWeightsNB(iCurrentCluster1, iCurrentCluster2) + |
708 | clusterWeightsNB(iCurrentCluster2, iCurrentCluster1)) * dX[iCurrentCluster1] * dX[iCurrentCluster2] + | |
709 | (clusterWeightsB(iCurrentCluster1, iCurrentCluster2) + | |
710 | clusterWeightsB(iCurrentCluster2, iCurrentCluster1)) * dY[iCurrentCluster1] * dY[iCurrentCluster2]; | |
ea94c18b | 711 | |
96ebe67e | 712 | iCurrentCluster2++; |
ea94c18b | 713 | } |
714 | ||
715 | // Add contribution from variances | |
c812dd48 | 716 | globalChi2b += clusterWeightsNB(iCurrentCluster1, iCurrentCluster1) * dX[iCurrentCluster1] * dX[iCurrentCluster1] + |
717 | clusterWeightsB(iCurrentCluster1, iCurrentCluster1) * dY[iCurrentCluster1] * dY[iCurrentCluster1]; | |
ea94c18b | 718 | |
96ebe67e | 719 | iCurrentCluster1++; |
ea94c18b | 720 | } |
721 | ||
722 | // Set local chi2 | |
96ebe67e | 723 | trackParamAtCluster->SetLocalChi2(globalChi2 - globalChi2b); |
ea94c18b | 724 | } |
725 | ||
726 | delete [] dX; | |
727 | delete [] dY; | |
728 | ||
729 | } else { // without multiple scattering effects | |
730 | ||
ce8cd162 | 731 | Int_t nClusters = GetNClusters(); |
732 | AliMUONTrackParam* trackParamAtCluster; | |
96ebe67e | 733 | AliMUONVCluster *discardedCluster; |
ea94c18b | 734 | Double_t dX, dY; |
ce8cd162 | 735 | for (Int_t iCluster = 0; iCluster < nClusters ; iCluster++) { |
736 | trackParamAtCluster = static_cast<AliMUONTrackParam*>(fTrackParamAtCluster->UncheckedAt(iCluster)); | |
ea94c18b | 737 | |
96ebe67e | 738 | discardedCluster = trackParamAtCluster->GetClusterPtr(); |
ea94c18b | 739 | |
740 | // Compute residuals | |
96ebe67e | 741 | dX = discardedCluster->GetX() - trackParamAtCluster->GetNonBendingCoor(); |
742 | dY = discardedCluster->GetY() - trackParamAtCluster->GetBendingCoor(); | |
ea94c18b | 743 | |
744 | // Set local chi2 | |
96ebe67e | 745 | trackParamAtCluster->SetLocalChi2(dX * dX / discardedCluster->GetErrX2() + dY * dY / discardedCluster->GetErrY2()); |
ea94c18b | 746 | } |
747 | ||
748 | } | |
749 | ||
ea94c18b | 750 | return kTRUE; |
751 | ||
752 | } | |
753 | ||
754 | //__________________________________________________________________________ | |
755 | Double_t AliMUONTrack::ComputeGlobalChi2(Bool_t accountForMCS) | |
756 | { | |
757 | /// Compute the chi2 of the track accounting for multiple scattering or not according to the flag | |
96ebe67e | 758 | /// - Assume that track parameters at each cluster are corrects |
759 | /// - Assume the cluster weights matrices are corrects | |
4ea3f013 | 760 | /// - Return a value of chi2 higher than the maximum allowed if computation failed |
7332f213 | 761 | AliDebug(1,"Enter ComputeGlobalChi2"); |
762 | ||
763 | if (!fTrackParamAtCluster) { | |
764 | AliWarning("no cluster attached to this track"); | |
4ea3f013 | 765 | return 2.*MaxChi2(); |
7332f213 | 766 | } |
ea94c18b | 767 | |
ea94c18b | 768 | Double_t chi2 = 0.; |
769 | ||
770 | if (accountForMCS) { | |
771 | ||
b709ac13 | 772 | // Check the weight matrices. If weight matrices are not available compute chi2 without MCS |
96ebe67e | 773 | if (!fClusterWeightsNonBending || !fClusterWeightsBending) { |
774 | AliWarning("cluster weights including multiple scattering effects are not available\n\t\t --> compute chi2 WITHOUT multiple scattering"); | |
b709ac13 | 775 | return ComputeGlobalChi2(kFALSE); |
776 | } | |
96ebe67e | 777 | Int_t nClusters = GetNClusters(); |
778 | if (fClusterWeightsNonBending->GetNrows() != nClusters || fClusterWeightsBending->GetNcols() != nClusters) { | |
779 | AliWarning("cluster weights including multiple scattering effects are not available\n\t\t --> compute chi2 WITHOUT multiple scattering"); | |
ea94c18b | 780 | return ComputeGlobalChi2(kFALSE); |
781 | } | |
782 | ||
783 | // Compute chi2 | |
96ebe67e | 784 | AliMUONVCluster *cluster; |
785 | Double_t *dX = new Double_t[nClusters]; | |
786 | Double_t *dY = new Double_t[nClusters]; | |
787 | AliMUONTrackParam* trackParamAtCluster; | |
788 | for (Int_t iCluster1 = 0; iCluster1 < nClusters; iCluster1++) { | |
789 | trackParamAtCluster = (AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(iCluster1); | |
790 | cluster = trackParamAtCluster->GetClusterPtr(); | |
791 | dX[iCluster1] = cluster->GetX() - trackParamAtCluster->GetNonBendingCoor(); | |
792 | dY[iCluster1] = cluster->GetY() - trackParamAtCluster->GetBendingCoor(); | |
793 | for (Int_t iCluster2 = 0; iCluster2 < iCluster1; iCluster2++) { | |
794 | chi2 += ((*fClusterWeightsNonBending)(iCluster1, iCluster2) + (*fClusterWeightsNonBending)(iCluster2, iCluster1)) * dX[iCluster1] * dX[iCluster2] + | |
795 | ((*fClusterWeightsBending)(iCluster1, iCluster2) + (*fClusterWeightsBending)(iCluster2, iCluster1)) * dY[iCluster1] * dY[iCluster2]; | |
ea94c18b | 796 | } |
96ebe67e | 797 | chi2 += ((*fClusterWeightsNonBending)(iCluster1, iCluster1) * dX[iCluster1] * dX[iCluster1]) + |
798 | ((*fClusterWeightsBending)(iCluster1, iCluster1) * dY[iCluster1] * dY[iCluster1]); | |
ea94c18b | 799 | } |
800 | delete [] dX; | |
801 | delete [] dY; | |
802 | ||
803 | } else { | |
804 | ||
96ebe67e | 805 | AliMUONVCluster *cluster; |
ea94c18b | 806 | Double_t dX, dY; |
96ebe67e | 807 | AliMUONTrackParam* trackParamAtCluster; |
808 | Int_t nClusters = GetNClusters(); | |
809 | for (Int_t iCluster = 0; iCluster < nClusters ; iCluster++) { | |
810 | trackParamAtCluster = (AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(iCluster); | |
811 | cluster = trackParamAtCluster->GetClusterPtr(); | |
812 | dX = cluster->GetX() - trackParamAtCluster->GetNonBendingCoor(); | |
813 | dY = cluster->GetY() - trackParamAtCluster->GetBendingCoor(); | |
814 | chi2 += dX * dX / cluster->GetErrX2() + dY * dY / cluster->GetErrY2(); | |
ea94c18b | 815 | } |
816 | ||
817 | } | |
818 | ||
819 | return chi2; | |
820 | ||
821 | } | |
822 | ||
823 | //__________________________________________________________________________ | |
96ebe67e | 824 | Bool_t AliMUONTrack::ComputeClusterWeights(TMatrixD* mcsCovariances) |
ea94c18b | 825 | { |
96ebe67e | 826 | /// Compute the weight matrices of the attached clusters, in non bending and bending direction, |
827 | /// accounting for multiple scattering correlations and cluster resolution | |
ea94c18b | 828 | /// - Use the provided MCS covariance matrix if any (otherwise build it temporarily) |
96ebe67e | 829 | /// - Assume that track parameters at each cluster are corrects |
ea94c18b | 830 | /// - Return kFALSE if computation failed |
7332f213 | 831 | AliDebug(1,"Enter ComputeClusterWeights1"); |
832 | ||
833 | if (!fTrackParamAtCluster) { | |
834 | AliWarning("no cluster attached to this track"); | |
835 | return kFALSE; | |
836 | } | |
ea94c18b | 837 | |
838 | // Alocate memory | |
96ebe67e | 839 | Int_t nClusters = GetNClusters(); |
840 | if (!fClusterWeightsNonBending) fClusterWeightsNonBending = new TMatrixD(nClusters,nClusters); | |
841 | if (!fClusterWeightsBending) fClusterWeightsBending = new TMatrixD(nClusters,nClusters); | |
ea94c18b | 842 | |
843 | // Compute weights matrices | |
96ebe67e | 844 | if (!ComputeClusterWeights(*fClusterWeightsNonBending, *fClusterWeightsBending, mcsCovariances)) return kFALSE; |
ea94c18b | 845 | |
846 | return kTRUE; | |
847 | ||
848 | } | |
849 | ||
850 | //__________________________________________________________________________ | |
c812dd48 | 851 | Bool_t AliMUONTrack::ComputeClusterWeights(TMatrixD& clusterWeightsNB, TMatrixD& clusterWeightsB, |
57e2ad1a | 852 | TMatrixD* mcsCovariances, const AliMUONVCluster* discardedCluster) const |
ea94c18b | 853 | { |
854 | /// Compute the weight matrices, in non bending and bending direction, | |
96ebe67e | 855 | /// of the other attached clusters assuming the discarded one does not exist |
856 | /// accounting for multiple scattering correlations and cluster resolution | |
ea94c18b | 857 | /// - Use the provided MCS covariance matrix if any (otherwise build it temporarily) |
858 | /// - Return kFALSE if computation failed | |
7332f213 | 859 | AliDebug(1,"Enter ComputeClusterWeights2"); |
ea94c18b | 860 | |
861 | // Check MCS covariance matrix and recompute it if need | |
96ebe67e | 862 | Int_t nClusters = GetNClusters(); |
ea94c18b | 863 | Bool_t deleteMCSCov = kFALSE; |
864 | if (!mcsCovariances) { | |
96ebe67e | 865 | mcsCovariances = new TMatrixD(nClusters,nClusters); |
ea94c18b | 866 | deleteMCSCov = kTRUE; |
867 | ComputeMCSCovariances(*mcsCovariances); | |
ea94c18b | 868 | } |
869 | ||
870 | // Resize the weights matrices; alocate memory | |
96ebe67e | 871 | if (discardedCluster) { |
c812dd48 | 872 | clusterWeightsNB.ResizeTo(nClusters-1,nClusters-1); |
873 | clusterWeightsB.ResizeTo(nClusters-1,nClusters-1); | |
ea94c18b | 874 | } else { |
c812dd48 | 875 | clusterWeightsNB.ResizeTo(nClusters,nClusters); |
876 | clusterWeightsB.ResizeTo(nClusters,nClusters); | |
ea94c18b | 877 | } |
878 | ||
879 | // Define variables | |
96ebe67e | 880 | AliMUONVCluster *cluster1, *cluster2; |
881 | Int_t iCurrentCluster1, iCurrentCluster2; | |
ea94c18b | 882 | |
883 | // Compute the covariance matrices | |
96ebe67e | 884 | iCurrentCluster1 = 0; |
885 | for (Int_t iCluster1 = 0; iCluster1 < nClusters; iCluster1++) { | |
886 | cluster1 = ((AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(iCluster1))->GetClusterPtr(); | |
ea94c18b | 887 | |
96ebe67e | 888 | if (cluster1 == discardedCluster) continue; |
ea94c18b | 889 | |
96ebe67e | 890 | // Loop over next clusters |
891 | iCurrentCluster2 = iCurrentCluster1; | |
892 | for (Int_t iCluster2 = iCluster1; iCluster2 < nClusters; iCluster2++) { | |
893 | cluster2 = ((AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(iCluster2))->GetClusterPtr(); | |
ea94c18b | 894 | |
96ebe67e | 895 | if (cluster2 == discardedCluster) continue; |
ea94c18b | 896 | |
ea94c18b | 897 | // Fill with MCS covariances |
c812dd48 | 898 | clusterWeightsNB(iCurrentCluster1, iCurrentCluster2) = (*mcsCovariances)(iCluster1,iCluster2); |
ea94c18b | 899 | |
900 | // Equal contribution from multiple scattering in non bending and bending directions | |
c812dd48 | 901 | clusterWeightsB(iCurrentCluster1, iCurrentCluster2) = clusterWeightsNB(iCurrentCluster1, iCurrentCluster2); |
ea94c18b | 902 | |
96ebe67e | 903 | // Add contribution from cluster resolution to diagonal element and symmetrize the matrix |
904 | if (iCurrentCluster1 == iCurrentCluster2) { | |
ea94c18b | 905 | |
906 | // In non bending plane | |
c812dd48 | 907 | clusterWeightsNB(iCurrentCluster1, iCurrentCluster1) += cluster1->GetErrX2(); |
ea94c18b | 908 | // In bending plane |
c812dd48 | 909 | clusterWeightsB(iCurrentCluster1, iCurrentCluster1) += cluster1->GetErrY2(); |
ea94c18b | 910 | |
911 | } else { | |
912 | ||
913 | // In non bending plane | |
c812dd48 | 914 | clusterWeightsNB(iCurrentCluster2, iCurrentCluster1) = clusterWeightsNB(iCurrentCluster1, iCurrentCluster2); |
ea94c18b | 915 | // In bending plane |
c812dd48 | 916 | clusterWeightsB(iCurrentCluster2, iCurrentCluster1) = clusterWeightsB(iCurrentCluster1, iCurrentCluster2); |
ea94c18b | 917 | |
918 | } | |
919 | ||
96ebe67e | 920 | iCurrentCluster2++; |
ea94c18b | 921 | } |
922 | ||
96ebe67e | 923 | iCurrentCluster1++; |
ea94c18b | 924 | } |
925 | ||
926 | // Inversion of covariance matrices to get the weights | |
c812dd48 | 927 | if (clusterWeightsNB.Determinant() != 0 && clusterWeightsB.Determinant() != 0) { |
928 | clusterWeightsNB.Invert(); | |
929 | clusterWeightsB.Invert(); | |
ea94c18b | 930 | } else { |
931 | AliWarning(" Determinant = 0"); | |
c812dd48 | 932 | clusterWeightsNB.ResizeTo(0,0); |
933 | clusterWeightsB.ResizeTo(0,0); | |
ea94c18b | 934 | if(deleteMCSCov) delete mcsCovariances; |
935 | return kFALSE; | |
936 | } | |
937 | ||
938 | if(deleteMCSCov) delete mcsCovariances; | |
939 | ||
940 | return kTRUE; | |
941 | ||
942 | } | |
943 | ||
944 | //__________________________________________________________________________ | |
945 | void AliMUONTrack::ComputeMCSCovariances(TMatrixD& mcsCovariances) const | |
946 | { | |
947 | /// Compute the multiple scattering covariance matrix | |
96ebe67e | 948 | /// (assume that track parameters at each cluster are corrects) |
7332f213 | 949 | AliDebug(1,"Enter ComputeMCSCovariances"); |
ea94c18b | 950 | |
b709ac13 | 951 | // Reset the size of the covariance matrix if needed |
96ebe67e | 952 | Int_t nClusters = GetNClusters(); |
953 | if (mcsCovariances.GetNrows() != nClusters) mcsCovariances.ResizeTo(nClusters,nClusters); | |
ea94c18b | 954 | |
955 | // Define variables | |
b709ac13 | 956 | Int_t nChambers = AliMUONConstants::NTrackingCh(); |
96ebe67e | 957 | AliMUONTrackParam* trackParamAtCluster; |
ea94c18b | 958 | AliMUONTrackParam extrapTrackParam; |
b709ac13 | 959 | Int_t currentChamber = 0, expectedChamber = 0, size = 0; |
960 | Double_t *mcsAngle2 = new Double_t[2*nChambers]; | |
961 | Double_t *zMCS = new Double_t[2*nChambers]; | |
96ebe67e | 962 | Int_t *indices = new Int_t[2*nClusters]; |
ea94c18b | 963 | |
964 | // Compute multiple scattering dispersion angle at each chamber | |
965 | // and save the z position where it is calculated | |
96ebe67e | 966 | for (Int_t iCluster = 0; iCluster < nClusters; iCluster++) { |
967 | trackParamAtCluster = (AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(iCluster); | |
ea94c18b | 968 | |
969 | // look for missing chambers if any | |
96ebe67e | 970 | currentChamber = trackParamAtCluster->GetClusterPtr()->GetChamberId(); |
ea94c18b | 971 | while (currentChamber > expectedChamber) { |
972 | ||
973 | // Save the z position where MCS dispersion is calculated | |
b709ac13 | 974 | zMCS[size] = AliMUONConstants::DefaultChamberZ(expectedChamber); |
ea94c18b | 975 | |
96ebe67e | 976 | // Do not take into account MCS in chambers prior the first cluster |
977 | if (iCluster > 0) { | |
ea94c18b | 978 | |
979 | // Get track parameters at missing chamber z | |
96ebe67e | 980 | extrapTrackParam = *trackParamAtCluster; |
981 | AliMUONTrackExtrap::ExtrapToZ(&extrapTrackParam, zMCS[size]); | |
ea94c18b | 982 | |
983 | // Save multiple scattering dispersion angle in missing chamber | |
4663da9f | 984 | mcsAngle2[size] = AliMUONTrackExtrap::GetMCSAngle2(extrapTrackParam,AliMUONConstants::ChamberThicknessInX0(expectedChamber),1.); |
ea94c18b | 985 | |
b709ac13 | 986 | } else mcsAngle2[size] = 0.; |
ea94c18b | 987 | |
988 | expectedChamber++; | |
b709ac13 | 989 | size++; |
ea94c18b | 990 | } |
991 | ||
992 | // Save z position where MCS dispersion is calculated | |
96ebe67e | 993 | zMCS[size] = trackParamAtCluster->GetZ(); |
ea94c18b | 994 | |
995 | // Save multiple scattering dispersion angle in current chamber | |
4663da9f | 996 | mcsAngle2[size] = AliMUONTrackExtrap::GetMCSAngle2(*trackParamAtCluster,AliMUONConstants::ChamberThicknessInX0(currentChamber),1.); |
b709ac13 | 997 | |
998 | // Save indice in zMCS array corresponding to the current cluster | |
96ebe67e | 999 | indices[iCluster] = size; |
ea94c18b | 1000 | |
b709ac13 | 1001 | expectedChamber = currentChamber + 1; |
1002 | size++; | |
ea94c18b | 1003 | } |
1004 | ||
96ebe67e | 1005 | // complete array of z if last cluster is on the last but one chamber |
b709ac13 | 1006 | if (currentChamber != nChambers-1) zMCS[size++] = AliMUONConstants::DefaultChamberZ(nChambers-1); |
ea94c18b | 1007 | |
1008 | // Compute the covariance matrix | |
96ebe67e | 1009 | for (Int_t iCluster1 = 0; iCluster1 < nClusters; iCluster1++) { |
ea94c18b | 1010 | |
96ebe67e | 1011 | for (Int_t iCluster2 = iCluster1; iCluster2 < nClusters; iCluster2++) { |
ea94c18b | 1012 | |
1013 | // Initialization to 0 (diagonal plus upper triangular part) | |
96ebe67e | 1014 | mcsCovariances(iCluster1,iCluster2) = 0.; |
ea94c18b | 1015 | |
1016 | // Compute contribution from multiple scattering in upstream chambers | |
96ebe67e | 1017 | for (Int_t k = 0; k < indices[iCluster1]; k++) { |
1018 | mcsCovariances(iCluster1,iCluster2) += (zMCS[indices[iCluster1]] - zMCS[k]) * (zMCS[indices[iCluster2]] - zMCS[k]) * mcsAngle2[k]; | |
ea94c18b | 1019 | } |
1020 | ||
1021 | // Symetrize the matrix | |
96ebe67e | 1022 | mcsCovariances(iCluster2,iCluster1) = mcsCovariances(iCluster1,iCluster2); |
ea94c18b | 1023 | } |
1024 | ||
1025 | } | |
1026 | ||
1027 | delete [] mcsAngle2; | |
1028 | delete [] zMCS; | |
b709ac13 | 1029 | delete [] indices; |
ea94c18b | 1030 | |
1031 | } | |
1032 | ||
208f139e | 1033 | //__________________________________________________________________________ |
5c15a68b | 1034 | Int_t AliMUONTrack::ClustersInCommon(AliMUONTrack* track, Int_t stMin, Int_t stMax) const |
208f139e | 1035 | { |
5c15a68b | 1036 | /// Returns the number of clusters in common in stations [stMin, stMax] |
89c8d66d | 1037 | /// between the current track ("this") and the track pointed to by "track". |
5c15a68b | 1038 | |
ce8cd162 | 1039 | if (!track || !track->fTrackParamAtCluster || !this->fTrackParamAtCluster) return 0; |
5c15a68b | 1040 | |
1041 | Int_t chMin = 2 * stMin; | |
1042 | Int_t chMax = 2 * stMax + 1; | |
89c8d66d | 1043 | Int_t clustersInCommon = 0; |
5c15a68b | 1044 | |
89c8d66d | 1045 | // Loop over clusters of first track |
5c15a68b | 1046 | Int_t nCl1 = this->GetNClusters(); |
1047 | for(Int_t iCl1 = 0; iCl1 < nCl1; iCl1++) { | |
1048 | AliMUONVCluster* cl1 = ((AliMUONTrackParam*) this->fTrackParamAtCluster->UncheckedAt(iCl1))->GetClusterPtr(); | |
1049 | ||
1050 | Int_t chCl1 = cl1->GetChamberId(); | |
1051 | if (chCl1 < chMin || chCl1 > chMax) continue; | |
1052 | ||
89c8d66d | 1053 | // Loop over clusters of second track |
5c15a68b | 1054 | Int_t nCl2 = track->GetNClusters(); |
1055 | for(Int_t iCl2 = 0; iCl2 < nCl2; iCl2++) { | |
1056 | AliMUONVCluster* cl2 = ((AliMUONTrackParam*) track->fTrackParamAtCluster->UncheckedAt(iCl2))->GetClusterPtr(); | |
1057 | ||
1058 | Int_t chCl2 = cl2->GetChamberId(); | |
1059 | if (chCl2 < chMin || chCl2 > chMax) continue; | |
1060 | ||
1061 | // Increment "clustersInCommon" if both clusters have the same ID | |
1062 | if (cl1->GetUniqueID() == cl2->GetUniqueID()) { | |
89c8d66d | 1063 | clustersInCommon++; |
1064 | break; | |
1065 | } | |
5c15a68b | 1066 | |
89c8d66d | 1067 | } |
5c15a68b | 1068 | |
89c8d66d | 1069 | } |
5c15a68b | 1070 | |
96ebe67e | 1071 | return clustersInCommon; |
208f139e | 1072 | } |
1073 | ||
5a240757 | 1074 | //__________________________________________________________________________ |
1075 | Int_t AliMUONTrack::GetNDF() const | |
1076 | { | |
1077 | /// return the number of degrees of freedom | |
1078 | ||
1079 | Int_t ndf = 2 * GetNClusters() - 5; | |
1080 | return (ndf > 0) ? ndf : 0; | |
1081 | } | |
1082 | ||
ea94c18b | 1083 | //__________________________________________________________________________ |
1084 | Double_t AliMUONTrack::GetNormalizedChi2() const | |
1085 | { | |
5a240757 | 1086 | /// return the chi2 value divided by the number of degrees of freedom (or FLT_MAX if ndf <= 0) |
ea94c18b | 1087 | |
5a240757 | 1088 | Double_t ndf = (Double_t) GetNDF(); |
4ea3f013 | 1089 | return (ndf > 0.) ? fGlobalChi2 / ndf : 2.*MaxChi2(); |
ea94c18b | 1090 | } |
1091 | ||
208f139e | 1092 | //__________________________________________________________________________ |
57e2ad1a | 1093 | Int_t AliMUONTrack::FindCompatibleClusters(const AliMUONTrack &track, Double_t sigmaCut, Bool_t compatibleCluster[10]) const |
b8dc484b | 1094 | { |
f202486b | 1095 | /// Try to match clusters from this track with clusters from the given track within the provided sigma cut: |
1096 | /// - Fill the array compatibleCluster[iCh] with kTRUE if a compatible cluster has been found in chamber iCh. | |
1097 | /// - Return the number of clusters of "this" track matched with one cluster of the given track. | |
96ebe67e | 1098 | AliMUONVCluster *cluster1, *cluster2; |
c59f70b9 | 1099 | Double_t chi2, dX, dY; |
61fed964 | 1100 | Double_t chi2Max = sigmaCut * sigmaCut; |
96ebe67e | 1101 | |
c59f70b9 | 1102 | // initialization |
1103 | Int_t nMatchClusters = 0; | |
96ebe67e | 1104 | for ( Int_t ch = 0; ch < AliMUONConstants::NTrackingCh(); ch++) compatibleCluster[ch] = kFALSE; |
b8dc484b | 1105 | |
f202486b | 1106 | if (!track.fTrackParamAtCluster || !this->fTrackParamAtCluster) return nMatchClusters; |
7332f213 | 1107 | |
96ebe67e | 1108 | // Loop over clusters of first track |
ce8cd162 | 1109 | Int_t nCl1 = this->GetNClusters(); |
1110 | for(Int_t iCl1 = 0; iCl1 < nCl1; iCl1++) { | |
1111 | cluster1 = static_cast<AliMUONTrackParam*>(this->fTrackParamAtCluster->UncheckedAt(iCl1))->GetClusterPtr(); | |
96ebe67e | 1112 | |
1113 | // Loop over clusters of second track | |
ce8cd162 | 1114 | Int_t nCl2 = track.GetNClusters(); |
1115 | for(Int_t iCl2 = 0; iCl2 < nCl2; iCl2++) { | |
1116 | cluster2 = static_cast<AliMUONTrackParam*>(track.fTrackParamAtCluster->UncheckedAt(iCl2))->GetClusterPtr(); | |
96ebe67e | 1117 | |
c59f70b9 | 1118 | // check DE Id |
1119 | if (cluster1->GetDetElemId() != cluster2->GetDetElemId()) continue; | |
96ebe67e | 1120 | |
2e2d0c44 | 1121 | // check local chi2 |
96ebe67e | 1122 | dX = cluster1->GetX() - cluster2->GetX(); |
96ebe67e | 1123 | dY = cluster1->GetY() - cluster2->GetY(); |
2e2d0c44 | 1124 | chi2 = dX * dX / (cluster1->GetErrX2() + cluster2->GetErrX2()) + dY * dY / (cluster1->GetErrY2() + cluster2->GetErrY2()); |
1125 | if (chi2 > 2. * chi2Max) continue; // 2 because 2 quantities in chi2 | |
96ebe67e | 1126 | |
1127 | compatibleCluster[cluster1->GetChamberId()] = kTRUE; | |
c59f70b9 | 1128 | nMatchClusters++; |
96ebe67e | 1129 | break; |
1130 | } | |
1131 | ||
b8dc484b | 1132 | } |
1133 | ||
c59f70b9 | 1134 | return nMatchClusters; |
8429a5e4 | 1135 | } |
1136 | ||
f202486b | 1137 | //__________________________________________________________________________ |
1138 | Bool_t AliMUONTrack::Match(AliMUONTrack &track, Double_t sigmaCut, Int_t &nMatchClusters) const | |
1139 | { | |
1140 | /// Try to match this track with the given track. Matching conditions: | |
1141 | /// - more than 50% of clusters from this track matched with clusters from the given track | |
1142 | /// - at least 1 cluster matched before and 1 cluster matched after the dipole | |
1143 | ||
1144 | Bool_t compTrack[10]; | |
1145 | nMatchClusters = FindCompatibleClusters(track, sigmaCut, compTrack); | |
1146 | ||
1147 | if ((compTrack[0] || compTrack[1] || compTrack[2] || compTrack[3]) && // at least 1 cluster matched in st 1 & 2 | |
1148 | (compTrack[6] || compTrack[7] || compTrack[8] || compTrack[9]) && // at least 1 cluster matched in st 4 & 5 | |
1149 | 2 * nMatchClusters > GetNClusters()) return kTRUE; // more than 50% of clusters matched | |
1150 | else return kFALSE; | |
1151 | ||
1152 | } | |
1153 | ||
96ebe67e | 1154 | //__________________________________________________________________________ |
1155 | void AliMUONTrack::SetTrackParamAtVertex(const AliMUONTrackParam* trackParam) | |
1156 | { | |
1157 | /// set track parameters at vertex | |
1158 | if (trackParam == 0x0) return; | |
1159 | if (fTrackParamAtVertex) *fTrackParamAtVertex = *trackParam; | |
1160 | else fTrackParamAtVertex = new AliMUONTrackParam(*trackParam); | |
1161 | } | |
1162 | ||
1163 | //__________________________________________________________________________ | |
1164 | void AliMUONTrack::RecursiveDump() const | |
a9e2aefa | 1165 | { |
96ebe67e | 1166 | /// Recursive dump of AliMUONTrack, i.e. with dump of trackParamAtCluster and attached clusters |
1167 | AliMUONTrackParam *trackParamAtCluster; | |
1168 | AliMUONVCluster *cluster; | |
de2cd600 | 1169 | cout << "Recursive dump of Track: " << this << endl; |
1170 | // Track | |
1171 | this->Dump(); | |
96ebe67e | 1172 | for (Int_t iCluster = 0; iCluster < GetNClusters(); iCluster++) { |
1173 | trackParamAtCluster = (AliMUONTrackParam*) ((*fTrackParamAtCluster)[iCluster]); | |
1174 | // trackParamAtCluster | |
1175 | cout << "trackParamAtCluster: " << trackParamAtCluster << " (index: " << iCluster << ")" << endl; | |
1176 | trackParamAtCluster->Dump(); | |
1177 | cluster = trackParamAtCluster->GetClusterPtr(); | |
1178 | // cluster | |
1179 | cout << "cluster: " << cluster << endl; | |
1180 | cluster->Print(); | |
a9e2aefa | 1181 | } |
de2cd600 | 1182 | return; |
a9e2aefa | 1183 | } |
04b5ea16 | 1184 | |
6464217e | 1185 | //_____________________________________________- |
d2b1e7bb | 1186 | void AliMUONTrack::Print(Option_t*) const |
6464217e | 1187 | { |
2457f726 | 1188 | /// Printing Track information |
d2b1e7bb | 1189 | |
7b318ae2 | 1190 | streamsize curW = cout.width(); |
1191 | streamsize curPrecision = cout.precision(); | |
96ebe67e | 1192 | cout << "<AliMUONTrack> No.Clusters=" << setw(2) << GetNClusters() << |
6464217e | 1193 | ", Match2Trig=" << setw(1) << GetMatchTrigger() << |
bdfb6eef | 1194 | ", LoTrgNum=" << setw(3) << LoCircuit() << |
d2b1e7bb | 1195 | ", Chi2-tracking-trigger=" << setw(8) << setprecision(5) << GetChi2MatchTrigger(); |
0a2dcc83 | 1196 | cout << Form(" HitTriggerPattern trig %x track %x",fHitsPatternInTrigCh, fHitsPatternInTrigChTrk); |
2e2d0c44 | 1197 | cout << Form(" MClabel=%d",fTrackID) << endl; |
7332f213 | 1198 | if (fTrackParamAtCluster) fTrackParamAtCluster->First()->Print("FULL"); |
7b318ae2 | 1199 | cout.width(curW); |
1200 | cout.precision(curPrecision); | |
6464217e | 1201 | } |
423b32ca | 1202 | |
1203 | //__________________________________________________________________________ | |
00d46f24 | 1204 | 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 | 1205 | { |
1206 | /// pack the local trigger information and store | |
1207 | ||
01413742 | 1208 | if (loCirc < 0) return; |
423b32ca | 1209 | |
1210 | fLocalTrigger = 0; | |
1211 | fLocalTrigger += loCirc; | |
1212 | fLocalTrigger += loStripX << 8; | |
1213 | fLocalTrigger += loStripY << 13; | |
1214 | fLocalTrigger += loDev << 17; | |
1215 | fLocalTrigger += loLpt << 22; | |
1216 | fLocalTrigger += loHpt << 24; | |
00d46f24 | 1217 | fLocalTrigger += respWithoutChamber << 26; |
423b32ca | 1218 | |
1219 | } | |
1220 | ||
2e2d0c44 | 1221 | //__________________________________________________________________________ |
1222 | void AliMUONTrack::FindMCLabel() | |
1223 | { | |
1224 | /// Determine the MC label from the label of the attached clusters and fill fMCLabel data member: | |
1225 | /// More than 50% of clusters, including 1 before and 1 after the dipole, must share the same label | |
1226 | ||
1227 | Int_t nClusters = GetNClusters(); | |
1228 | Int_t halfCluster = nClusters/2; | |
1229 | ||
1230 | // reset MC label | |
1231 | fTrackID = -1; | |
1232 | ||
1233 | // loop over first clusters (if nClusters left < (nClusters-halfCluster) the conditions cannot be fulfilled) | |
1234 | for (Int_t iCluster1 = 0; iCluster1 < nClusters-halfCluster; iCluster1++) { | |
1235 | AliMUONVCluster* cluster1 = ((AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(iCluster1))->GetClusterPtr(); | |
1236 | ||
1237 | // if the first cluster is not on station 1 or 2 the conditions cannot be fulfilled | |
1238 | if (cluster1->GetChamberId() > 3) return; | |
1239 | ||
1240 | Int_t label1 = cluster1->GetMCLabel(); | |
1241 | if (label1 < 0) continue; | |
1242 | ||
1243 | Int_t nIdenticalLabel = 1; | |
1244 | ||
1245 | // Loop over next clusters | |
1246 | for (Int_t iCluster2 = iCluster1+1; iCluster2 < nClusters; iCluster2++) { | |
1247 | AliMUONVCluster* cluster2 = ((AliMUONTrackParam*) fTrackParamAtCluster->UncheckedAt(iCluster2))->GetClusterPtr(); | |
1248 | ||
1249 | if (cluster2->GetMCLabel() != label1) continue; | |
1250 | ||
1251 | nIdenticalLabel++; | |
1252 | ||
1253 | // stop as soon as conditions are fulfilled | |
1254 | if (nIdenticalLabel > halfCluster && cluster2->GetChamberId() > 5) { | |
1255 | fTrackID = label1; | |
1256 | return; | |
1257 | } | |
1258 | ||
1259 | } | |
1260 | ||
1261 | } | |
1262 | ||
1263 | } | |
1264 |