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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 | ||
cc87ebcd | 16 | /* $Id$ */ |
17 | ||
7945aae7 | 18 | /// \class AliMUONTrackReconstructor |
19 | /// MUON track reconstructor using the original method | |
20 | /// | |
21 | /// This class contains as data: | |
22 | /// - the parameters for the track reconstruction | |
23 | /// | |
24 | /// It contains as methods, among others: | |
25 | /// - MakeTracks to build the tracks | |
26 | /// | |
a9e2aefa | 27 | |
ae17f568 | 28 | #include <stdlib.h> |
30178c30 | 29 | #include <Riostream.h> |
cc87ebcd | 30 | #include <TMatrixD.h> |
a9e2aefa | 31 | |
2457f726 | 32 | #include "AliMUONVTrackReconstructor.h" |
29f1b13a | 33 | #include "AliMUONTrackReconstructor.h" |
5e671e06 | 34 | #include "AliMUONData.h" |
29fc2c86 | 35 | #include "AliMUONConstants.h" |
a9e2aefa | 36 | #include "AliMUONRawCluster.h" |
2457f726 | 37 | #include "AliMUONHitForRec.h" |
3831f268 | 38 | #include "AliMUONSegment.h" |
a9e2aefa | 39 | #include "AliMUONTrack.h" |
37827b29 | 40 | #include "AliMUONTrackParam.h" |
41 | #include "AliMUONTrackExtrap.h" | |
8c343c7c | 42 | #include "AliLog.h" |
de2cd600 | 43 | #include <TVirtualFitter.h> |
a9e2aefa | 44 | |
de2cd600 | 45 | // Functions to be minimized with Minuit |
46 | void TrackChi2(Int_t &NParam, Double_t *Gradient, Double_t &Chi2, Double_t *Param, Int_t Flag); | |
47 | void TrackChi2MCS(Int_t &NParam, Double_t *Gradient, Double_t &Chi2, Double_t *Param, Int_t Flag); | |
48 | ||
49 | void mnvertLocal(Double_t* a, Int_t l, Int_t m, Int_t n, Int_t& ifail); | |
50 | ||
51 | Double_t MultipleScatteringAngle2(AliMUONTrackParam *param); | |
52 | ||
7945aae7 | 53 | /// \cond CLASSIMP |
29f1b13a | 54 | ClassImp(AliMUONTrackReconstructor) // Class implementation in ROOT context |
7945aae7 | 55 | /// \endcond |
a9e2aefa | 56 | |
2457f726 | 57 | //************* Defaults parameters for reconstruction |
58 | const Double_t AliMUONTrackReconstructor::fgkDefaultMaxChi2 = 100.0; | |
59 | ||
60 | TVirtualFitter* AliMUONTrackReconstructor::fgFitter = 0x0; | |
61 | ||
3bc8b580 | 62 | //__________________________________________________________________________ |
cc9e7528 | 63 | AliMUONTrackReconstructor::AliMUONTrackReconstructor(AliMUONData* data) |
2457f726 | 64 | : AliMUONVTrackReconstructor(data), |
65 | fMaxChi2(fgkDefaultMaxChi2) | |
a9e2aefa | 66 | { |
2457f726 | 67 | /// Constructor for class AliMUONTrackReconstructor |
de2cd600 | 68 | |
a9e2aefa | 69 | // Memory allocation for the TClonesArray of reconstructed tracks |
a9e2aefa | 70 | fRecTracksPtr = new TClonesArray("AliMUONTrack", 10); |
a9e2aefa | 71 | } |
9cbdf048 | 72 | |
a9e2aefa | 73 | //__________________________________________________________________________ |
29f1b13a | 74 | AliMUONTrackReconstructor::~AliMUONTrackReconstructor(void) |
a9e2aefa | 75 | { |
2457f726 | 76 | /// Destructor for class AliMUONTrackReconstructor |
de2cd600 | 77 | delete fRecTracksPtr; |
a9e2aefa | 78 | } |
a9e2aefa | 79 | |
80 | //__________________________________________________________________________ | |
2457f726 | 81 | void AliMUONTrackReconstructor::AddHitsForRecFromRawClusters() |
a9e2aefa | 82 | { |
2457f726 | 83 | /// To add to the list of hits for reconstruction all the raw clusters |
e6b25a6e | 84 | TTree *treeR; |
a9e2aefa | 85 | AliMUONHitForRec *hitForRec; |
86 | AliMUONRawCluster *clus; | |
f69d51b5 | 87 | Int_t iclus, nclus, nTRentries; |
a9e2aefa | 88 | TClonesArray *rawclusters; |
b840996b | 89 | AliDebug(1,"Enter AddHitsForRecFromRawClusters"); |
2457f726 | 90 | |
e6b25a6e | 91 | treeR = fMUONData->TreeR(); |
92 | if (!treeR) { | |
93 | AliError("TreeR must be loaded"); | |
2457f726 | 94 | exit(0); |
f69d51b5 | 95 | } |
e6b25a6e | 96 | |
97 | nTRentries = Int_t(treeR->GetEntries()); | |
98 | ||
99 | if (!(fMUONData->IsRawClusterBranchesInTree())) { | |
100 | AliError(Form("RawCluster information is not avalaible, nTRentries = %d not equal to 1",nTRentries)); | |
101 | exit(0); | |
102 | } | |
103 | ||
104 | fMUONData->SetTreeAddress("RC"); | |
2457f726 | 105 | fMUONData->GetRawClusters(); // only one entry |
106 | ||
a9e2aefa | 107 | // Loop over tracking chambers |
190f97ea | 108 | for (Int_t ch = 0; ch < AliMUONConstants::NTrackingCh(); ch++) { |
a9e2aefa | 109 | // number of HitsForRec to 0 for the chamber |
110 | fNHitsForRecPerChamber[ch] = 0; | |
111 | // index of first HitForRec for the chamber | |
112 | if (ch == 0) fIndexOfFirstHitForRecPerChamber[ch] = 0; | |
113 | else fIndexOfFirstHitForRecPerChamber[ch] = fNHitsForRec; | |
52c9bc11 | 114 | rawclusters =fMUONData->RawClusters(ch); |
a9e2aefa | 115 | nclus = (Int_t) (rawclusters->GetEntries()); |
116 | // Loop over (cathode correlated) raw clusters | |
117 | for (iclus = 0; iclus < nclus; iclus++) { | |
118 | clus = (AliMUONRawCluster*) rawclusters->UncheckedAt(iclus); | |
119 | // new AliMUONHitForRec from raw cluster | |
120 | // and increment number of AliMUONHitForRec's (total and in chamber) | |
121 | hitForRec = new ((*fHitsForRecPtr)[fNHitsForRec]) AliMUONHitForRec(clus); | |
122 | fNHitsForRec++; | |
123 | (fNHitsForRecPerChamber[ch])++; | |
124 | // more information into HitForRec | |
fff097e0 | 125 | hitForRec->SetBendingReso2(clus->GetErrY() * clus->GetErrY()); |
126 | hitForRec->SetNonBendingReso2(clus->GetErrX() * clus->GetErrX()); | |
a9e2aefa | 127 | // original raw cluster |
128 | hitForRec->SetChamberNumber(ch); | |
129 | hitForRec->SetHitNumber(iclus); | |
ba5b68db | 130 | // Z coordinate of the raw cluster (cm) |
ba12c242 | 131 | hitForRec->SetZ(clus->GetZ(0)); |
80e33fc5 | 132 | |
133 | StdoutToAliDebug(3, | |
134 | cout << "Chamber " << ch << | |
135 | " raw cluster " << iclus << " : " << endl; | |
136 | clus->Print("full"); | |
137 | cout << "AliMUONHitForRec number (1...): " << fNHitsForRec << endl; | |
138 | hitForRec->Print("full"); | |
139 | ); | |
a9e2aefa | 140 | } // end of cluster loop |
141 | } // end of chamber loop | |
cc87ebcd | 142 | SortHitsForRecWithIncreasingChamber(); |
2457f726 | 143 | |
144 | AliDebug(1,"End of AddHitsForRecFromRawClusters"); | |
145 | if (AliLog::GetGlobalDebugLevel() > 0) { | |
146 | AliDebug(1, Form("NHitsForRec: %d",fNHitsForRec)); | |
147 | for (Int_t ch = 0; ch < AliMUONConstants::NTrackingCh(); ch++) { | |
148 | AliDebug(1, Form("Chamber(0...): %d",ch)); | |
149 | AliDebug(1, Form("NHitsForRec: %d", fNHitsForRecPerChamber[ch])); | |
150 | AliDebug(1, Form("Index(first HitForRec): %d", fIndexOfFirstHitForRecPerChamber[ch])); | |
151 | for (Int_t hit = fIndexOfFirstHitForRecPerChamber[ch]; | |
152 | hit < fIndexOfFirstHitForRecPerChamber[ch] + fNHitsForRecPerChamber[ch]; | |
153 | hit++) { | |
154 | AliDebug(1, Form("HitForRec index(0...): %d",hit)); | |
155 | ((*fHitsForRecPtr)[hit])->Dump(); | |
156 | } | |
157 | } | |
158 | } | |
159 | ||
a9e2aefa | 160 | return; |
161 | } | |
162 | ||
163 | //__________________________________________________________________________ | |
29f1b13a | 164 | void AliMUONTrackReconstructor::MakeSegments(void) |
a9e2aefa | 165 | { |
2457f726 | 166 | /// To make the list of segments in all stations, |
167 | /// from the list of hits to be reconstructed | |
b840996b | 168 | AliDebug(1,"Enter MakeSegments"); |
a9e2aefa | 169 | // Loop over stations |
2457f726 | 170 | for (Int_t st = 0; st < AliMUONConstants::NTrackingCh()/2; st++) MakeSegmentsPerStation(st); |
80e33fc5 | 171 | |
172 | StdoutToAliDebug(3, | |
a9e2aefa | 173 | cout << "end of MakeSegments" << endl; |
80e33fc5 | 174 | for (Int_t st = 0; st < AliMUONConstants::NTrackingCh()/2; st++) |
175 | { | |
176 | cout << "station " << st | |
177 | << " has " << fNSegments[st] << " segments:" | |
178 | << endl; | |
179 | for (Int_t seg = 0; seg < fNSegments[st]; seg++) | |
180 | { | |
181 | ((*fSegmentsPtr[st])[seg])->Print(); | |
a9e2aefa | 182 | } |
183 | } | |
80e33fc5 | 184 | ); |
a9e2aefa | 185 | return; |
186 | } | |
187 | ||
188 | //__________________________________________________________________________ | |
29f1b13a | 189 | void AliMUONTrackReconstructor::MakeTracks(void) |
a9e2aefa | 190 | { |
2457f726 | 191 | /// To make the tracks from the list of segments and points in all stations |
b840996b | 192 | AliDebug(1,"Enter MakeTracks"); |
2457f726 | 193 | // Look for candidates from at least 3 aligned points in stations(1..) 4 and 5 |
194 | MakeTrackCandidates(); | |
195 | // Follow tracks in stations(1..) 3, 2 and 1 | |
196 | FollowTracks(); | |
197 | // Remove double tracks | |
198 | RemoveDoubleTracks(); | |
199 | UpdateHitForRecAtHit(); | |
276c44b7 | 200 | } |
201 | ||
de2cd600 | 202 | //__________________________________________________________________________ |
203 | void AliMUONTrackReconstructor::MakeTrackCandidates(void) | |
204 | { | |
2457f726 | 205 | /// To make track candidates |
206 | /// with at least 3 aligned points in stations(1..) 4 and 5 | |
207 | /// (two Segment's or one Segment and one HitForRec) | |
de2cd600 | 208 | Int_t begStation, iBegSegment, nbCan1Seg1Hit, nbCan2Seg; |
209 | AliMUONSegment *begSegment; | |
210 | AliDebug(1,"Enter MakeTrackCandidates"); | |
211 | // Loop over stations(1..) 5 and 4 for the beginning segment | |
212 | for (begStation = 4; begStation > 2; begStation--) { | |
213 | // Loop over segments in the beginning station | |
214 | for (iBegSegment = 0; iBegSegment < fNSegments[begStation]; iBegSegment++) { | |
215 | // pointer to segment | |
216 | begSegment = (AliMUONSegment*) ((*fSegmentsPtr[begStation])[iBegSegment]); | |
217 | AliDebug(2,Form("Look for TrackCandidate's with Segment %d in Station(0..) %d", iBegSegment, begStation)); | |
218 | // Look for track candidates with two segments, | |
219 | // "begSegment" and all compatible segments in other station. | |
220 | // Only for beginning station(1..) 5 | |
221 | // because candidates with 2 segments have to looked for only once. | |
222 | if (begStation == 4) | |
223 | nbCan2Seg = MakeTrackCandidatesWithTwoSegments(begSegment); | |
224 | // Look for track candidates with one segment and one point, | |
225 | // "begSegment" and all compatible HitForRec's in other station. | |
226 | // Only if "begSegment" does not belong already to a track candidate. | |
227 | // Is that a too strong condition ???? | |
228 | if (!(begSegment->GetInTrack())) | |
229 | nbCan1Seg1Hit = MakeTrackCandidatesWithOneSegmentAndOnePoint(begSegment); | |
230 | } // for (iBegSegment = 0;... | |
231 | } // for (begStation = 4;... | |
232 | return; | |
233 | } | |
234 | ||
a9e2aefa | 235 | //__________________________________________________________________________ |
29f1b13a | 236 | Int_t AliMUONTrackReconstructor::MakeTrackCandidatesWithTwoSegments(AliMUONSegment *BegSegment) |
a9e2aefa | 237 | { |
2457f726 | 238 | /// To make track candidates with two segments in stations(1..) 4 and 5, |
239 | /// the first segment being pointed to by "BegSegment". | |
240 | /// Returns the number of such track candidates. | |
a9e2aefa | 241 | Int_t endStation, iEndSegment, nbCan2Seg; |
e516b01d | 242 | AliMUONSegment *endSegment; |
243 | AliMUONSegment *extrapSegment = NULL; | |
a9e2aefa | 244 | AliMUONTrack *recTrack; |
245 | Double_t mcsFactor; | |
b840996b | 246 | AliDebug(1,"Enter MakeTrackCandidatesWithTwoSegments"); |
a9e2aefa | 247 | // Station for the end segment |
248 | endStation = 7 - (BegSegment->GetHitForRec1())->GetChamberNumber() / 2; | |
249 | // multiple scattering factor corresponding to one chamber | |
250 | mcsFactor = 0.0136 / | |
251 | GetBendingMomentumFromImpactParam(BegSegment->GetBendingImpact()); | |
252 | mcsFactor = fChamberThicknessInX0 * mcsFactor * mcsFactor; | |
253 | // linear extrapolation to end station | |
a9e2aefa | 254 | // number of candidates with 2 segments to 0 |
255 | nbCan2Seg = 0; | |
256 | // Loop over segments in the end station | |
257 | for (iEndSegment = 0; iEndSegment < fNSegments[endStation]; iEndSegment++) { | |
258 | // pointer to segment | |
259 | endSegment = (AliMUONSegment*) ((*fSegmentsPtr[endStation])[iEndSegment]); | |
260 | // test compatibility between current segment and "extrapSegment" | |
04b5ea16 | 261 | // 4 because 4 quantities in chi2 |
e516b01d | 262 | extrapSegment = |
263 | BegSegment->CreateSegmentFromLinearExtrapToStation(endSegment->GetZ(), mcsFactor); | |
a9e2aefa | 264 | if ((endSegment-> |
265 | NormalizedChi2WithSegment(extrapSegment, | |
266 | fMaxSigma2Distance)) <= 4.0) { | |
267 | // both segments compatible: | |
268 | // make track candidate from "begSegment" and "endSegment" | |
b840996b | 269 | AliDebug(2,Form("TrackCandidate with Segment %d in Station(0..) %d", iEndSegment, endStation)); |
a9e2aefa | 270 | // flag for both segments in one track: |
271 | // to be done in track constructor ???? | |
272 | BegSegment->SetInTrack(kTRUE); | |
273 | endSegment->SetInTrack(kTRUE); | |
de2cd600 | 274 | recTrack = new ((*fRecTracksPtr)[fNRecTracks]) AliMUONTrack(BegSegment, endSegment); |
275 | // Set track parameters at vertex from last stations 4 & 5 | |
276 | CalcTrackParamAtVertex(recTrack); | |
a9e2aefa | 277 | fNRecTracks++; |
b840996b | 278 | if (AliLog::GetGlobalDebugLevel() > 1) recTrack->RecursiveDump(); |
a9e2aefa | 279 | // increment number of track candidates with 2 segments |
280 | nbCan2Seg++; | |
281 | } | |
ddf8948c | 282 | delete extrapSegment; // should not delete HitForRec's it points to !!!! |
a9e2aefa | 283 | } // for (iEndSegment = 0;... |
a9e2aefa | 284 | return nbCan2Seg; |
285 | } | |
286 | ||
287 | //__________________________________________________________________________ | |
29f1b13a | 288 | Int_t AliMUONTrackReconstructor::MakeTrackCandidatesWithOneSegmentAndOnePoint(AliMUONSegment *BegSegment) |
a9e2aefa | 289 | { |
2457f726 | 290 | /// To make track candidates with one segment and one point |
291 | /// in stations(1..) 4 and 5, | |
292 | /// the segment being pointed to by "BegSegment". | |
a9e2aefa | 293 | Int_t ch, ch1, ch2, endStation, iHit, iHitMax, iHitMin, nbCan1Seg1Hit; |
e516b01d | 294 | AliMUONHitForRec *extrapHitForRec= NULL; |
295 | AliMUONHitForRec *hit; | |
a9e2aefa | 296 | AliMUONTrack *recTrack; |
297 | Double_t mcsFactor; | |
b840996b | 298 | AliDebug(1,"Enter MakeTrackCandidatesWithOneSegmentAndOnePoint"); |
a9e2aefa | 299 | // station for the end point |
300 | endStation = 7 - (BegSegment->GetHitForRec1())->GetChamberNumber() / 2; | |
301 | // multiple scattering factor corresponding to one chamber | |
302 | mcsFactor = 0.0136 / | |
303 | GetBendingMomentumFromImpactParam(BegSegment->GetBendingImpact()); | |
304 | mcsFactor = fChamberThicknessInX0 * mcsFactor * mcsFactor; | |
305 | // first and second chambers(0..) in the end station | |
306 | ch1 = 2 * endStation; | |
307 | ch2 = ch1 + 1; | |
308 | // number of candidates to 0 | |
309 | nbCan1Seg1Hit = 0; | |
310 | // Loop over chambers of the end station | |
311 | for (ch = ch2; ch >= ch1; ch--) { | |
a9e2aefa | 312 | // limits for the hit index in the loop |
313 | iHitMin = fIndexOfFirstHitForRecPerChamber[ch]; | |
314 | iHitMax = iHitMin + fNHitsForRecPerChamber[ch]; | |
315 | // Loop over HitForRec's in the chamber | |
316 | for (iHit = iHitMin; iHit < iHitMax; iHit++) { | |
317 | // pointer to HitForRec | |
318 | hit = (AliMUONHitForRec*) ((*fHitsForRecPtr)[iHit]); | |
319 | // test compatibility between current HitForRec and "extrapHitForRec" | |
04b5ea16 | 320 | // 2 because 2 quantities in chi2 |
e516b01d | 321 | // linear extrapolation to chamber |
322 | extrapHitForRec = | |
323 | BegSegment->CreateHitForRecFromLinearExtrapToChamber( hit->GetZ(), mcsFactor); | |
a9e2aefa | 324 | if ((hit-> |
325 | NormalizedChi2WithHitForRec(extrapHitForRec, | |
326 | fMaxSigma2Distance)) <= 2.0) { | |
327 | // both HitForRec's compatible: | |
328 | // make track candidate from begSegment and current HitForRec | |
b840996b | 329 | AliDebug(2, Form("TrackCandidate with HitForRec %d in Chamber(0..) %d", iHit, ch)); |
a9e2aefa | 330 | // flag for beginning segments in one track: |
331 | // to be done in track constructor ???? | |
332 | BegSegment->SetInTrack(kTRUE); | |
de2cd600 | 333 | recTrack = new ((*fRecTracksPtr)[fNRecTracks]) AliMUONTrack(BegSegment, hit); |
334 | // Set track parameters at vertex from last stations 4 & 5 | |
335 | CalcTrackParamAtVertex(recTrack); | |
a9e2aefa | 336 | // the right place to eliminate "double counting" ???? how ???? |
337 | fNRecTracks++; | |
b840996b | 338 | if (AliLog::GetGlobalDebugLevel() > 1) recTrack->RecursiveDump(); |
a9e2aefa | 339 | // increment number of track candidates |
340 | nbCan1Seg1Hit++; | |
341 | } | |
ddf8948c | 342 | delete extrapHitForRec; |
a9e2aefa | 343 | } // for (iHit = iHitMin;... |
a9e2aefa | 344 | } // for (ch = ch2;... |
345 | return nbCan1Seg1Hit; | |
346 | } | |
347 | ||
348 | //__________________________________________________________________________ | |
2457f726 | 349 | void AliMUONTrackReconstructor::CalcTrackParamAtVertex(AliMUONTrack *Track) const |
a9e2aefa | 350 | { |
2457f726 | 351 | /// Set track parameters at vertex. |
352 | /// TrackHit's are assumed to be only in stations(1..) 4 and 5, | |
353 | /// and sorted according to increasing Z. | |
354 | /// Parameters are calculated from information in HitForRec's | |
355 | /// of first and last TrackHit's. | |
de2cd600 | 356 | AliMUONTrackParam *trackParamVertex = Track->GetTrackParamAtVertex(); // pointer to track parameters at vertex |
357 | // Pointer to HitForRec attached to first TrackParamAtHit | |
358 | AliMUONHitForRec *firstHit = ((AliMUONTrackParam*) (Track->GetTrackParamAtHit()->First()))->GetHitForRecPtr(); | |
359 | // Pointer to HitForRec attached to last TrackParamAtHit | |
360 | AliMUONHitForRec *lastHit = ((AliMUONTrackParam*) (Track->GetTrackParamAtHit()->Last()))->GetHitForRecPtr(); | |
361 | // Z difference between first and last hits | |
362 | Double_t deltaZ = firstHit->GetZ() - lastHit->GetZ(); | |
363 | // bending slope in stations(1..) 4 and 5 | |
364 | Double_t bendingSlope = (firstHit->GetBendingCoor() - lastHit->GetBendingCoor()) / deltaZ; | |
365 | trackParamVertex->SetBendingSlope(bendingSlope); | |
366 | // impact parameter | |
367 | Double_t impactParam = firstHit->GetBendingCoor() - bendingSlope * firstHit->GetZ(); | |
368 | // signed bending momentum | |
369 | trackParamVertex->SetInverseBendingMomentum(1.0 / GetBendingMomentumFromImpactParam(impactParam)); | |
370 | // bending slope at vertex | |
2457f726 | 371 | trackParamVertex->SetBendingSlope(bendingSlope + impactParam / fSimpleBPosition); |
de2cd600 | 372 | // non bending slope |
373 | trackParamVertex->SetNonBendingSlope((firstHit->GetNonBendingCoor() - lastHit->GetNonBendingCoor()) / deltaZ); | |
374 | // vertex coordinates at (0,0,0) | |
375 | trackParamVertex->SetZ(0.0); | |
376 | trackParamVertex->SetBendingCoor(0.0); | |
377 | trackParamVertex->SetNonBendingCoor(0.0); | |
a9e2aefa | 378 | } |
379 | ||
380 | //__________________________________________________________________________ | |
29f1b13a | 381 | void AliMUONTrackReconstructor::FollowTracks(void) |
a9e2aefa | 382 | { |
2457f726 | 383 | /// Follow tracks in stations(1..) 3, 2 and 1 |
04b5ea16 | 384 | // too long: should be made more modular !!!! |
e516b01d | 385 | AliMUONHitForRec *bestHit, *extrapHit, *hit; |
386 | AliMUONSegment *bestSegment, *extrapSegment, *segment; | |
04b5ea16 | 387 | AliMUONTrack *track, *nextTrack; |
388 | AliMUONTrackParam *trackParam1, trackParam[2], trackParamVertex; | |
ecfa008b | 389 | // -1 to avoid compilation warnings |
390 | Int_t ch = -1, chInStation, chBestHit = -1, iHit, iSegment, station, trackIndex; | |
04b5ea16 | 391 | Double_t bestChi2, chi2, dZ1, dZ2, dZ3, maxSigma2Distance, mcsFactor; |
d0bfce8d | 392 | Double_t bendingMomentum, chi2Norm = 0.; |
cc87ebcd | 393 | |
1a38e749 | 394 | |
04b5ea16 | 395 | // local maxSigma2Distance, for easy increase in testing |
396 | maxSigma2Distance = fMaxSigma2Distance; | |
b840996b | 397 | AliDebug(2,"Enter FollowTracks"); |
a9e2aefa | 398 | // Loop over track candidates |
04b5ea16 | 399 | track = (AliMUONTrack*) fRecTracksPtr->First(); |
400 | trackIndex = -1; | |
401 | while (track) { | |
04b5ea16 | 402 | trackIndex++; |
403 | nextTrack = (AliMUONTrack*) fRecTracksPtr->After(track); // prepare next track | |
b840996b | 404 | AliDebug(2,Form("FollowTracks: track candidate(0..): %d", trackIndex)); |
de2cd600 | 405 | // Fit track candidate from parameters at vertex |
406 | // -> with 3 parameters (X_vertex and Y_vertex are fixed) | |
407 | // without multiple Coulomb scattering | |
408 | Fit(track,0,0); | |
b840996b | 409 | if (AliLog::GetGlobalDebugLevel()> 2) { |
a9e2aefa | 410 | cout << "FollowTracks: track candidate(0..): " << trackIndex |
956019b6 | 411 | << " after fit in stations(0..) 3 and 4" << endl; |
a9e2aefa | 412 | track->RecursiveDump(); |
413 | } | |
414 | // Loop over stations(1..) 3, 2 and 1 | |
04b5ea16 | 415 | // something SPECIAL for stations 2 and 1 for majority 3 coincidence ???? |
416 | // otherwise: majority coincidence 2 !!!! | |
a9e2aefa | 417 | for (station = 2; station >= 0; station--) { |
418 | // Track parameters at first track hit (smallest Z) | |
de2cd600 | 419 | trackParam1 = (AliMUONTrackParam*) (track->GetTrackParamAtHit()->First()); |
a9e2aefa | 420 | // extrapolation to station |
37827b29 | 421 | AliMUONTrackExtrap::ExtrapToStation(trackParam1, station, trackParam); |
79e1e601 | 422 | extrapSegment = new AliMUONSegment(); // empty segment |
a9e2aefa | 423 | // multiple scattering factor corresponding to one chamber |
424 | // and momentum in bending plane (not total) | |
425 | mcsFactor = 0.0136 * trackParam1->GetInverseBendingMomentum(); | |
426 | mcsFactor = fChamberThicknessInX0 * mcsFactor * mcsFactor; | |
427 | // Z difference from previous station | |
f93b9bd8 | 428 | dZ1 = AliMUONConstants::DefaultChamberZ(2 * station) - |
429 | AliMUONConstants::DefaultChamberZ(2 * station + 2); | |
a9e2aefa | 430 | // Z difference between the two previous stations |
f93b9bd8 | 431 | dZ2 = AliMUONConstants::DefaultChamberZ(2 * station + 2) - |
432 | AliMUONConstants::DefaultChamberZ(2 * station + 4); | |
04b5ea16 | 433 | // Z difference between the two chambers in the previous station |
f93b9bd8 | 434 | dZ3 = AliMUONConstants::DefaultChamberZ(2 * station) - |
435 | AliMUONConstants::DefaultChamberZ(2 * station + 1); | |
04b5ea16 | 436 | extrapSegment->SetBendingCoorReso2(fBendingResolution * fBendingResolution); |
de2cd600 | 437 | extrapSegment->SetNonBendingCoorReso2(fNonBendingResolution * fNonBendingResolution); |
438 | extrapSegment->UpdateFromStationTrackParam(trackParam, mcsFactor, dZ1, dZ2, dZ3, station, | |
439 | trackParam1->GetInverseBendingMomentum()); | |
a9e2aefa | 440 | bestChi2 = 5.0; |
441 | bestSegment = NULL; | |
b840996b | 442 | if (AliLog::GetGlobalDebugLevel() > 2) { |
a9e2aefa | 443 | cout << "FollowTracks: track candidate(0..): " << trackIndex |
444 | << " Look for segment in station(0..): " << station << endl; | |
445 | } | |
1a38e749 | 446 | |
a9e2aefa | 447 | // Loop over segments in station |
448 | for (iSegment = 0; iSegment < fNSegments[station]; iSegment++) { | |
449 | // Look for best compatible Segment in station | |
450 | // should consider all possibilities ???? | |
451 | // multiple scattering ???? | |
452 | // separation in 2 functions: Segment and HitForRec ???? | |
453 | segment = (AliMUONSegment*) ((*fSegmentsPtr[station])[iSegment]); | |
d0bfce8d | 454 | // correction of corrected segment (fBendingCoor and fNonBendingCoor) |
455 | // according to real Z value of "segment" and slopes of "extrapSegment" | |
37827b29 | 456 | AliMUONTrackExtrap::ExtrapToZ(&(trackParam[0]), segment->GetZ()); |
457 | AliMUONTrackExtrap::ExtrapToZ(&(trackParam[1]), segment->GetZ()); // now same as trackParam[0] !?!?!?!?!?! | |
e516b01d | 458 | extrapSegment->SetBendingCoor((&(trackParam[0]))->GetBendingCoor()); |
459 | extrapSegment->SetNonBendingCoor((&(trackParam[0]))->GetNonBendingCoor()); | |
460 | extrapSegment->SetBendingSlope((&(trackParam[0]))->GetBendingSlope()); | |
461 | extrapSegment->SetNonBendingSlope((&(trackParam[0]))->GetNonBendingSlope()); | |
de2cd600 | 462 | chi2 = segment->NormalizedChi2WithSegment(extrapSegment, maxSigma2Distance); |
a9e2aefa | 463 | if (chi2 < bestChi2) { |
464 | // update best Chi2 and Segment if better found | |
465 | bestSegment = segment; | |
466 | bestChi2 = chi2; | |
467 | } | |
468 | } | |
469 | if (bestSegment) { | |
470 | // best segment found: add it to track candidate | |
37827b29 | 471 | AliMUONTrackExtrap::ExtrapToZ(&(trackParam[0]), bestSegment->GetZ()); |
de2cd600 | 472 | track->AddTrackParamAtHit(&(trackParam[0]),bestSegment->GetHitForRec1()); |
37827b29 | 473 | AliMUONTrackExtrap::ExtrapToZ(&(trackParam[1]), bestSegment->GetZ()); // now same as trackParam[0] !?!?!?!?!?! |
de2cd600 | 474 | track->AddTrackParamAtHit(&(trackParam[1]),bestSegment->GetHitForRec2()); |
b840996b | 475 | AliDebug(3, Form("FollowTracks: track candidate(0..): %d Added segment in station(0..): %d", trackIndex, station)); |
476 | if (AliLog::GetGlobalDebugLevel()>2) track->RecursiveDump(); | |
de2cd600 | 477 | } else { |
a9e2aefa | 478 | // No best segment found: |
479 | // Look for best compatible HitForRec in station: | |
480 | // should consider all possibilities ???? | |
481 | // multiple scattering ???? do about like for extrapSegment !!!! | |
79e1e601 | 482 | extrapHit = new AliMUONHitForRec(); // empty hit |
a9e2aefa | 483 | bestChi2 = 3.0; |
484 | bestHit = NULL; | |
b840996b | 485 | AliDebug(3, Form("FollowTracks: track candidate(0..): %d Segment not found, look for hit in station(0..): %d ", |
486 | trackIndex, station)); | |
487 | ||
a9e2aefa | 488 | // Loop over chambers of the station |
d82671a0 | 489 | for (chInStation = 0; chInStation < 2; chInStation++) { |
956019b6 | 490 | ch = 2 * station + chInStation; |
de2cd600 | 491 | for (iHit = fIndexOfFirstHitForRecPerChamber[ch]; iHit < fIndexOfFirstHitForRecPerChamber[ch]+fNHitsForRecPerChamber[ch]; iHit++) { |
a9e2aefa | 492 | hit = (AliMUONHitForRec*) ((*fHitsForRecPtr)[iHit]); |
e516b01d | 493 | // coordinates of extrapolated hit |
37827b29 | 494 | AliMUONTrackExtrap::ExtrapToZ(&(trackParam[chInStation]), hit->GetZ()); |
de2cd600 | 495 | extrapHit->SetBendingCoor((&(trackParam[chInStation]))->GetBendingCoor()); |
496 | extrapHit->SetNonBendingCoor((&(trackParam[chInStation]))->GetNonBendingCoor()); | |
e516b01d | 497 | // resolutions from "extrapSegment" |
498 | extrapHit->SetBendingReso2(extrapSegment->GetBendingCoorReso2()); | |
499 | extrapHit->SetNonBendingReso2(extrapSegment->GetNonBendingCoorReso2()); | |
500 | // Loop over hits in the chamber | |
a9e2aefa | 501 | // condition for hit not already in segment ???? |
502 | chi2 = hit->NormalizedChi2WithHitForRec(extrapHit, maxSigma2Distance); | |
503 | if (chi2 < bestChi2) { | |
504 | // update best Chi2 and HitForRec if better found | |
505 | bestHit = hit; | |
506 | bestChi2 = chi2; | |
d82671a0 | 507 | chBestHit = chInStation; |
a9e2aefa | 508 | } |
509 | } | |
510 | } | |
511 | if (bestHit) { | |
512 | // best hit found: add it to track candidate | |
37827b29 | 513 | AliMUONTrackExtrap::ExtrapToZ(&(trackParam[chBestHit]), bestHit->GetZ()); |
de2cd600 | 514 | track->AddTrackParamAtHit(&(trackParam[chBestHit]),bestHit); |
b840996b | 515 | if (AliLog::GetGlobalDebugLevel() > 2) { |
a9e2aefa | 516 | cout << "FollowTracks: track candidate(0..): " << trackIndex |
517 | << " Added hit in station(0..): " << station << endl; | |
518 | track->RecursiveDump(); | |
519 | } | |
de2cd600 | 520 | } else { |
8429a5e4 | 521 | // Remove current track candidate |
522 | // and corresponding TrackHit's, ... | |
de2cd600 | 523 | fRecTracksPtr->Remove(track); |
524 | fNRecTracks--; | |
04b5ea16 | 525 | delete extrapSegment; |
d0bfce8d | 526 | delete extrapHit; |
a9e2aefa | 527 | break; // stop the search for this candidate: |
528 | // exit from the loop over station | |
529 | } | |
d0bfce8d | 530 | delete extrapHit; |
a9e2aefa | 531 | } |
04b5ea16 | 532 | delete extrapSegment; |
de2cd600 | 533 | // Sort TrackParamAtHit according to increasing Z |
534 | track->GetTrackParamAtHit()->Sort(); | |
a9e2aefa | 535 | // Update track parameters at first track hit (smallest Z) |
de2cd600 | 536 | trackParam1 = (AliMUONTrackParam*) (track->GetTrackParamAtHit()->First()); |
d0bfce8d | 537 | bendingMomentum = 0.; |
538 | if (TMath::Abs(trackParam1->GetInverseBendingMomentum()) > 0.) | |
539 | bendingMomentum = TMath::Abs(1/(trackParam1->GetInverseBendingMomentum())); | |
540 | // Track removed if bendingMomentum not in window [min, max] | |
541 | if ((bendingMomentum < fMinBendingMomentum) || (bendingMomentum > fMaxBendingMomentum)) { | |
de2cd600 | 542 | fRecTracksPtr->Remove(track); |
543 | fNRecTracks--; | |
d0bfce8d | 544 | break; // stop the search for this candidate: |
545 | // exit from the loop over station | |
546 | } | |
de2cd600 | 547 | // Track fit from parameters at first hit |
548 | // -> with 5 parameters (momentum and position) | |
04b5ea16 | 549 | // with multiple Coulomb scattering if all stations |
de2cd600 | 550 | if (station == 0) Fit(track,1,1); |
956019b6 | 551 | // without multiple Coulomb scattering if not all stations |
de2cd600 | 552 | else Fit(track,1,0); |
d0bfce8d | 553 | Double_t numberOfDegFree = (2.0 * track->GetNTrackHits() - 5); |
554 | if (numberOfDegFree > 0) { | |
555 | chi2Norm = track->GetFitFMin() / numberOfDegFree; | |
556 | } else { | |
557 | chi2Norm = 1.e10; | |
558 | } | |
559 | // Track removed if normalized chi2 too high | |
560 | if (chi2Norm > fMaxChi2) { | |
de2cd600 | 561 | fRecTracksPtr->Remove(track); |
562 | fNRecTracks--; | |
d0bfce8d | 563 | break; // stop the search for this candidate: |
564 | // exit from the loop over station | |
565 | } | |
b840996b | 566 | if (AliLog::GetGlobalDebugLevel() > 2) { |
a9e2aefa | 567 | cout << "FollowTracks: track candidate(0..): " << trackIndex |
568 | << " after fit from station(0..): " << station << " to 4" << endl; | |
569 | track->RecursiveDump(); | |
570 | } | |
04b5ea16 | 571 | // Track extrapolation to the vertex through the absorber (Branson) |
956019b6 | 572 | // after going through the first station |
04b5ea16 | 573 | if (station == 0) { |
de2cd600 | 574 | trackParamVertex = *((AliMUONTrackParam*) (track->GetTrackParamAtHit()->First())); |
37827b29 | 575 | AliMUONTrackExtrap::ExtrapToVertex(&trackParamVertex, 0., 0., 0.); |
04b5ea16 | 576 | track->SetTrackParamAtVertex(&trackParamVertex); |
b840996b | 577 | if (AliLog::GetGlobalDebugLevel() > 0) { |
6ae236ee | 578 | cout << "FollowTracks: track candidate(0..): " << trackIndex |
579 | << " after extrapolation to vertex" << endl; | |
580 | track->RecursiveDump(); | |
581 | } | |
04b5ea16 | 582 | } |
a9e2aefa | 583 | } // for (station = 2;... |
04b5ea16 | 584 | // go really to next track |
585 | track = nextTrack; | |
586 | } // while (track) | |
de2cd600 | 587 | // Compression of track array (necessary after Remove) |
04b5ea16 | 588 | fRecTracksPtr->Compress(); |
589 | return; | |
590 | } | |
591 | ||
de2cd600 | 592 | //__________________________________________________________________________ |
593 | void AliMUONTrackReconstructor::Fit(AliMUONTrack *Track, Int_t FitStart, Int_t FitMCS) | |
594 | { | |
2457f726 | 595 | /// Fit the track "Track", |
596 | /// with or without multiple Coulomb scattering according to "FitMCS", | |
597 | /// starting, according to "FitStart", | |
598 | /// with track parameters at vertex or at the first TrackHit. | |
de2cd600 | 599 | |
600 | if ((FitStart != 0) && (FitStart != 1)) { | |
601 | cout << "ERROR in AliMUONTrackReconstructor::Fit(...)" << endl; | |
602 | cout << "FitStart = " << FitStart << " is neither 0 nor 1" << endl; | |
603 | exit(0); | |
604 | } | |
605 | if ((FitMCS != 0) && (FitMCS != 1)) { | |
606 | cout << "ERROR in AliMUONTrackReconstructor::Fit(...)" << endl; | |
607 | cout << "FitMCS = " << FitMCS << " is neither 0 nor 1" << endl; | |
608 | exit(0); | |
609 | } | |
610 | ||
611 | Double_t arg[1], benC, errorParam, invBenP, lower, nonBenC, upper, x, y; | |
612 | char parName[50]; | |
613 | AliMUONTrackParam *trackParam; | |
614 | // Check if Minuit is initialized... | |
615 | fgFitter = TVirtualFitter::Fitter(Track,5); | |
616 | fgFitter->Clear(); // necessary ???? probably yes | |
617 | // how to reset the printout number at every fit ???? | |
618 | // is there any risk to leave it like that ???? | |
619 | // how to go faster ???? choice of Minuit parameters like EDM ???? | |
620 | // choice of function to be minimized according to fFitMCS | |
621 | if (FitMCS == 0) fgFitter->SetFCN(TrackChi2); | |
622 | else fgFitter->SetFCN(TrackChi2MCS); | |
623 | // Switch off printout | |
624 | arg[0] = -1; | |
625 | fgFitter->ExecuteCommand("SET PRINT", arg, 1); // More printing !!!! | |
626 | // No warnings | |
627 | fgFitter->ExecuteCommand("SET NOW", arg, 0); | |
628 | // Parameters according to "fFitStart" | |
629 | // (should be a function to be used at every place where needed ????) | |
630 | if (FitStart == 0) trackParam = Track->GetTrackParamAtVertex(); | |
631 | else trackParam = (AliMUONTrackParam*) (Track->GetTrackParamAtHit()->First()); | |
632 | // set first 3 Minuit parameters | |
633 | // could be tried with no limits for the search (min=max=0) ???? | |
634 | fgFitter->SetParameter(0, "InvBenP", | |
635 | trackParam->GetInverseBendingMomentum(), | |
636 | 0.003, -0.4, 0.4); | |
637 | fgFitter->SetParameter(1, "BenS", | |
638 | trackParam->GetBendingSlope(), | |
639 | 0.001, -0.5, 0.5); | |
640 | fgFitter->SetParameter(2, "NonBenS", | |
641 | trackParam->GetNonBendingSlope(), | |
642 | 0.001, -0.5, 0.5); | |
643 | if (FitStart == 1) { | |
644 | // set last 2 Minuit parameters when we start from first track hit | |
645 | // mandatory limits in Bending to avoid NaN values of parameters | |
646 | fgFitter->SetParameter(3, "X", | |
647 | trackParam->GetNonBendingCoor(), | |
648 | 0.03, -500.0, 500.0); | |
649 | // mandatory limits in non Bending to avoid NaN values of parameters | |
650 | fgFitter->SetParameter(4, "Y", | |
651 | trackParam->GetBendingCoor(), | |
652 | 0.10, -500.0, 500.0); | |
653 | } | |
654 | // search without gradient calculation in the function | |
655 | fgFitter->ExecuteCommand("SET NOGRADIENT", arg, 0); | |
656 | // minimization | |
657 | fgFitter->ExecuteCommand("MINIMIZE", arg, 0); | |
658 | // exit from Minuit | |
659 | // fgFitter->ExecuteCommand("EXIT", arg, 0); // necessary ???? | |
660 | // get results into "invBenP", "benC", "nonBenC" ("x", "y") | |
661 | fgFitter->GetParameter(0, parName, invBenP, errorParam, lower, upper); | |
662 | trackParam->SetInverseBendingMomentum(invBenP); | |
663 | fgFitter->GetParameter(1, parName, benC, errorParam, lower, upper); | |
664 | trackParam->SetBendingSlope(benC); | |
665 | fgFitter->GetParameter(2, parName, nonBenC, errorParam, lower, upper); | |
666 | trackParam->SetNonBendingSlope(nonBenC); | |
667 | if (FitStart == 1) { | |
668 | fgFitter->GetParameter(3, parName, x, errorParam, lower, upper); | |
669 | trackParam->SetNonBendingCoor(x); | |
670 | fgFitter->GetParameter(4, parName, y, errorParam, lower, upper); | |
671 | trackParam->SetBendingCoor(y); | |
672 | } | |
673 | // global result of the fit | |
2457f726 | 674 | Double_t fedm, errdef, fitFMin; |
de2cd600 | 675 | Int_t npari, nparx; |
2457f726 | 676 | fgFitter->GetStats(fitFMin, fedm, errdef, npari, nparx); |
677 | Track->SetFitFMin(fitFMin); | |
de2cd600 | 678 | } |
679 | ||
680 | //__________________________________________________________________________ | |
681 | void TrackChi2(Int_t &NParam, Double_t * /*Gradient*/, Double_t &Chi2, Double_t *Param, Int_t /*Flag*/) | |
682 | { | |
2457f726 | 683 | /// Return the "Chi2" to be minimized with Minuit for track fitting, |
684 | /// with "NParam" parameters | |
685 | /// and their current values in array pointed to by "Param". | |
686 | /// Assumes that the track hits are sorted according to increasing Z. | |
687 | /// Track parameters at each TrackHit are updated accordingly. | |
688 | /// Multiple Coulomb scattering is not taken into account | |
de2cd600 | 689 | AliMUONTrack *trackBeingFitted; |
690 | AliMUONTrackParam param1; | |
2457f726 | 691 | AliMUONTrackParam* trackParamAtHit; |
692 | AliMUONHitForRec* hitForRec; | |
de2cd600 | 693 | Chi2 = 0.0; // initialize Chi2 |
694 | // copy of track parameters to be fitted | |
695 | trackBeingFitted = (AliMUONTrack*) AliMUONTrackReconstructor::Fitter()->GetObjectFit(); | |
696 | // 3 parameters means fit track candidate from parameters at vertex (X_vertex and Y_vertex are fixed) | |
697 | if (NParam == 3) param1 = *(trackBeingFitted->GetTrackParamAtVertex()); | |
698 | else param1 = *((AliMUONTrackParam*) (trackBeingFitted->GetTrackParamAtHit()->First())); | |
699 | // Minuit parameters to be fitted into this copy | |
700 | param1.SetInverseBendingMomentum(Param[0]); | |
701 | param1.SetBendingSlope(Param[1]); | |
702 | param1.SetNonBendingSlope(Param[2]); | |
703 | if (NParam == 5) { | |
704 | param1.SetNonBendingCoor(Param[3]); | |
705 | param1.SetBendingCoor(Param[4]); | |
706 | } | |
707 | // Follow track through all planes of track hits | |
2457f726 | 708 | trackParamAtHit = (AliMUONTrackParam*) (trackBeingFitted->GetTrackParamAtHit()->First()); |
709 | while (trackParamAtHit) { | |
710 | hitForRec = trackParamAtHit->GetHitForRecPtr(); | |
711 | // extrapolation to the plane of the hitForRec attached to the current trackParamAtHit | |
37827b29 | 712 | AliMUONTrackExtrap::ExtrapToZ(¶m1, hitForRec->GetZ()); |
de2cd600 | 713 | // update track parameters of the current hit |
2457f726 | 714 | trackParamAtHit->SetTrackParam(param1); |
de2cd600 | 715 | // Increment Chi2 |
716 | // done hit per hit, with hit resolution, | |
717 | // and not with point and angle like in "reco_muon.F" !!!! | |
718 | // Needs to add multiple scattering contribution ???? | |
2457f726 | 719 | Double_t dX = hitForRec->GetNonBendingCoor() - param1.GetNonBendingCoor(); |
720 | Double_t dY = hitForRec->GetBendingCoor() - param1.GetBendingCoor(); | |
721 | Chi2 = Chi2 + dX * dX / hitForRec->GetNonBendingReso2() + dY * dY / hitForRec->GetBendingReso2(); | |
722 | trackParamAtHit = (AliMUONTrackParam*) (trackBeingFitted->GetTrackParamAtHit()->After(trackParamAtHit)); | |
de2cd600 | 723 | } |
724 | } | |
725 | ||
726 | //__________________________________________________________________________ | |
727 | void TrackChi2MCS(Int_t &NParam, Double_t * /*Gradient*/, Double_t &Chi2, Double_t *Param, Int_t /*Flag*/) | |
728 | { | |
2457f726 | 729 | /// Return the "Chi2" to be minimized with Minuit for track fitting, |
730 | /// with "NParam" parameters | |
731 | /// and their current values in array pointed to by "Param". | |
732 | /// Assumes that the track hits are sorted according to increasing Z. | |
733 | /// Track parameters at each TrackHit are updated accordingly. | |
734 | /// Multiple Coulomb scattering is taken into account with covariance matrix. | |
de2cd600 | 735 | AliMUONTrack *trackBeingFitted; |
736 | AliMUONTrackParam param1; | |
2457f726 | 737 | AliMUONTrackParam* trackParamAtHit; |
738 | AliMUONHitForRec* hitForRec; | |
de2cd600 | 739 | Chi2 = 0.0; // initialize Chi2 |
740 | // copy of track parameters to be fitted | |
741 | trackBeingFitted = (AliMUONTrack*) AliMUONTrackReconstructor::Fitter()->GetObjectFit(); | |
742 | // 3 parameters means fit track candidate from parameters at vertex (X_vertex and Y_vertex are fixed) | |
743 | if (NParam == 3) param1 = *(trackBeingFitted->GetTrackParamAtVertex()); | |
744 | else param1 = *((AliMUONTrackParam*) (trackBeingFitted->GetTrackParamAtHit()->First())); | |
745 | // Minuit parameters to be fitted into this copy | |
746 | param1.SetInverseBendingMomentum(Param[0]); | |
747 | param1.SetBendingSlope(Param[1]); | |
748 | param1.SetNonBendingSlope(Param[2]); | |
749 | if (NParam == 5) { | |
750 | param1.SetNonBendingCoor(Param[3]); | |
751 | param1.SetBendingCoor(Param[4]); | |
752 | } | |
753 | ||
754 | Int_t chCurrent, chPrev = 0, hitNumber, hitNumber1, hitNumber2, hitNumber3; | |
755 | Double_t z1, z2, z3; | |
2457f726 | 756 | AliMUONTrackParam *trackParamAtHit1, *trackParamAtHit2, *trackParamAtHit3; |
757 | AliMUONHitForRec *hitForRec1, *hitForRec2; | |
de2cd600 | 758 | Double_t hbc1, hbc2, pbc1, pbc2; |
759 | Double_t hnbc1, hnbc2, pnbc1, pnbc2; | |
760 | Int_t numberOfHit = trackBeingFitted->GetNTrackHits(); | |
761 | TMatrixD *covBending = new TMatrixD(numberOfHit, numberOfHit); | |
762 | TMatrixD *covNonBending = new TMatrixD(numberOfHit, numberOfHit); | |
763 | Double_t *msa2 = new Double_t[numberOfHit]; | |
764 | ||
765 | // Predicted coordinates and multiple scattering angles are first calculated | |
766 | for (hitNumber = 0; hitNumber < numberOfHit; hitNumber++) { | |
2457f726 | 767 | trackParamAtHit = (AliMUONTrackParam*) (trackBeingFitted->GetTrackParamAtHit()->UncheckedAt(hitNumber)); |
768 | hitForRec = trackParamAtHit->GetHitForRecPtr(); | |
769 | // extrapolation to the plane of the hitForRec attached to the current trackParamAtHit | |
37827b29 | 770 | AliMUONTrackExtrap::ExtrapToZ(¶m1, hitForRec->GetZ()); |
de2cd600 | 771 | // update track parameters of the current hit |
2457f726 | 772 | trackParamAtHit->SetTrackParam(param1); |
de2cd600 | 773 | // square of multiple scattering angle at current hit, with one chamber |
774 | msa2[hitNumber] = MultipleScatteringAngle2(¶m1); | |
775 | // correction for eventual missing hits or multiple hits in a chamber, | |
776 | // according to the number of chambers | |
777 | // between the current hit and the previous one | |
2457f726 | 778 | chCurrent = hitForRec->GetChamberNumber(); |
de2cd600 | 779 | if (hitNumber > 0) msa2[hitNumber] = msa2[hitNumber] * (chCurrent - chPrev); |
780 | chPrev = chCurrent; | |
781 | } | |
782 | ||
783 | // Calculates the covariance matrix | |
784 | for (hitNumber1 = 0; hitNumber1 < numberOfHit; hitNumber1++) { | |
2457f726 | 785 | trackParamAtHit1 = (AliMUONTrackParam*) (trackBeingFitted->GetTrackParamAtHit()->UncheckedAt(hitNumber1)); |
786 | hitForRec1 = trackParamAtHit1->GetHitForRecPtr(); | |
787 | z1 = hitForRec1->GetZ(); | |
de2cd600 | 788 | for (hitNumber2 = hitNumber1; hitNumber2 < numberOfHit; hitNumber2++) { |
2457f726 | 789 | trackParamAtHit2 = (AliMUONTrackParam*) (trackBeingFitted->GetTrackParamAtHit()->UncheckedAt(hitNumber2)); |
790 | z2 = trackParamAtHit2->GetHitForRecPtr()->GetZ(); | |
de2cd600 | 791 | // initialization to 0 (diagonal plus upper triangular part) |
792 | (*covBending)(hitNumber2, hitNumber1) = 0.0; | |
793 | // contribution from multiple scattering in bending plane: | |
794 | // loop over upstream hits | |
795 | for (hitNumber3 = 0; hitNumber3 < hitNumber1; hitNumber3++) { | |
2457f726 | 796 | trackParamAtHit3 = (AliMUONTrackParam*) (trackBeingFitted->GetTrackParamAtHit()->UncheckedAt(hitNumber3)); |
797 | z3 = trackParamAtHit3->GetHitForRecPtr()->GetZ(); | |
de2cd600 | 798 | (*covBending)(hitNumber2, hitNumber1) = (*covBending)(hitNumber2, hitNumber1) + ((z1 - z3) * (z2 - z3) * msa2[hitNumber3]); |
799 | } | |
800 | // equal contribution from multiple scattering in non bending plane | |
801 | (*covNonBending)(hitNumber2, hitNumber1) = (*covBending)(hitNumber2, hitNumber1); | |
802 | if (hitNumber1 == hitNumber2) { | |
803 | // Diagonal elements: add contribution from position measurements | |
804 | // in bending plane | |
2457f726 | 805 | (*covBending)(hitNumber2, hitNumber1) = (*covBending)(hitNumber2, hitNumber1) + hitForRec1->GetBendingReso2(); |
de2cd600 | 806 | // and in non bending plane |
2457f726 | 807 | (*covNonBending)(hitNumber2, hitNumber1) = (*covNonBending)(hitNumber2, hitNumber1) + hitForRec1->GetNonBendingReso2(); |
de2cd600 | 808 | } else { |
809 | // Non diagonal elements: symmetrization | |
810 | // for bending plane | |
811 | (*covBending)(hitNumber1, hitNumber2) = (*covBending)(hitNumber2, hitNumber1); | |
812 | // and non bending plane | |
813 | (*covNonBending)(hitNumber1, hitNumber2) = (*covNonBending)(hitNumber2, hitNumber1); | |
814 | } | |
815 | } // for (hitNumber2 = hitNumber1;... | |
816 | } // for (hitNumber1 = 0;... | |
817 | ||
818 | // Inversion of covariance matrices | |
819 | // with "mnvertLocal", local "mnvert" function of Minuit. | |
820 | // One cannot use directly "mnvert" since "TVirtualFitter" does not know it. | |
821 | // One will have to replace this local function by the right inversion function | |
822 | // from a specialized Root package for symmetric positive definite matrices, | |
823 | // when available!!!! | |
824 | Int_t ifailBending; | |
825 | mnvertLocal(&((*covBending)(0,0)), numberOfHit, numberOfHit, numberOfHit, ifailBending); | |
826 | Int_t ifailNonBending; | |
827 | mnvertLocal(&((*covNonBending)(0,0)), numberOfHit, numberOfHit, numberOfHit, ifailNonBending); | |
828 | ||
829 | // It would be worth trying to calculate the inverse of the covariance matrix | |
830 | // only once per fit, since it cannot change much in principle, | |
831 | // and it would save a lot of computing time !!!! | |
832 | ||
833 | // Calculates Chi2 | |
834 | if ((ifailBending == 0) && (ifailNonBending == 0)) { | |
835 | // with Multiple Scattering if inversion correct | |
836 | for (hitNumber1 = 0; hitNumber1 < numberOfHit ; hitNumber1++) { | |
2457f726 | 837 | trackParamAtHit1 = (AliMUONTrackParam*) (trackBeingFitted->GetTrackParamAtHit()->UncheckedAt(hitNumber1)); |
838 | hitForRec1 = trackParamAtHit1->GetHitForRecPtr(); | |
839 | hbc1 = hitForRec1->GetBendingCoor(); | |
840 | pbc1 = trackParamAtHit1->GetBendingCoor(); | |
841 | hnbc1 = hitForRec1->GetNonBendingCoor(); | |
842 | pnbc1 = trackParamAtHit1->GetNonBendingCoor(); | |
de2cd600 | 843 | for (hitNumber2 = 0; hitNumber2 < numberOfHit; hitNumber2++) { |
2457f726 | 844 | trackParamAtHit2 = (AliMUONTrackParam*) (trackBeingFitted->GetTrackParamAtHit()->UncheckedAt(hitNumber2)); |
845 | hitForRec2 = trackParamAtHit2->GetHitForRecPtr(); | |
846 | hbc2 = hitForRec2->GetBendingCoor(); | |
847 | pbc2 = trackParamAtHit2->GetBendingCoor(); | |
848 | hnbc2 = hitForRec2->GetNonBendingCoor(); | |
849 | pnbc2 = trackParamAtHit2->GetNonBendingCoor(); | |
de2cd600 | 850 | Chi2 += ((*covBending)(hitNumber2, hitNumber1) * (hbc1 - pbc1) * (hbc2 - pbc2)) + |
851 | ((*covNonBending)(hitNumber2, hitNumber1) * (hnbc1 - pnbc1) * (hnbc2 - pnbc2)); | |
852 | } | |
853 | } | |
854 | } else { | |
855 | // without Multiple Scattering if inversion impossible | |
856 | for (hitNumber1 = 0; hitNumber1 < numberOfHit ; hitNumber1++) { | |
2457f726 | 857 | trackParamAtHit1 = (AliMUONTrackParam*) (trackBeingFitted->GetTrackParamAtHit()->UncheckedAt(hitNumber1)); |
858 | hitForRec1 = trackParamAtHit1->GetHitForRecPtr(); | |
859 | hbc1 = hitForRec1->GetBendingCoor(); | |
860 | pbc1 = trackParamAtHit1->GetBendingCoor(); | |
861 | hnbc1 = hitForRec1->GetNonBendingCoor(); | |
862 | pnbc1 = trackParamAtHit1->GetNonBendingCoor(); | |
863 | Chi2 += ((hbc1 - pbc1) * (hbc1 - pbc1) / hitForRec1->GetBendingReso2()) + | |
864 | ((hnbc1 - pnbc1) * (hnbc1 - pnbc1) / hitForRec1->GetNonBendingReso2()); | |
de2cd600 | 865 | } |
866 | } | |
867 | ||
868 | delete covBending; | |
869 | delete covNonBending; | |
870 | delete [] msa2; | |
871 | } | |
872 | ||
873 | Double_t MultipleScatteringAngle2(AliMUONTrackParam *param) | |
874 | { | |
2457f726 | 875 | /// Returns square of multiple Coulomb scattering angle |
876 | /// from TrackParamAtHit pointed to by "param" | |
de2cd600 | 877 | Double_t slopeBending, slopeNonBending, radiationLength, inverseBendingMomentum2, inverseTotalMomentum2; |
878 | Double_t varMultipleScatteringAngle; | |
879 | // Better implementation in AliMUONTrack class ???? | |
880 | slopeBending = param->GetBendingSlope(); | |
881 | slopeNonBending = param->GetNonBendingSlope(); | |
882 | // thickness in radiation length for the current track, | |
883 | // taking local angle into account | |
884 | radiationLength = AliMUONConstants::DefaultChamberThicknessInX0() * | |
885 | TMath::Sqrt(1.0 + slopeBending*slopeBending + slopeNonBending*slopeNonBending); | |
886 | inverseBendingMomentum2 = param->GetInverseBendingMomentum() * param->GetInverseBendingMomentum(); | |
887 | inverseTotalMomentum2 = inverseBendingMomentum2 * (1.0 + slopeBending * slopeBending) / | |
888 | (1.0 + slopeBending *slopeBending + slopeNonBending * slopeNonBending); | |
889 | varMultipleScatteringAngle = 0.0136 * (1.0 + 0.038 * TMath::Log(radiationLength)); | |
890 | // The velocity is assumed to be 1 !!!! | |
891 | varMultipleScatteringAngle = inverseTotalMomentum2 * radiationLength * varMultipleScatteringAngle * varMultipleScatteringAngle; | |
892 | return varMultipleScatteringAngle; | |
893 | } | |
894 | ||
895 | //______________________________________________________________________________ | |
896 | void mnvertLocal(Double_t *a, Int_t l, Int_t, Int_t n, Int_t &ifail) | |
897 | { | |
2457f726 | 898 | ///*-*-*-*-*-*-*-*-*-*-*-*Inverts a symmetric matrix*-*-*-*-*-*-*-*-*-*-*-*-* |
899 | ///*-* ========================== | |
900 | ///*-* inverts a symmetric matrix. matrix is first scaled to | |
901 | ///*-* have all ones on the diagonal (equivalent to change of units) | |
902 | ///*-* but no pivoting is done since matrix is positive-definite. | |
903 | ///*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* | |
de2cd600 | 904 | |
905 | // taken from TMinuit package of Root (l>=n) | |
906 | // fVERTs, fVERTq and fVERTpp changed to localVERTs, localVERTq and localVERTpp | |
907 | // Double_t localVERTs[n], localVERTq[n], localVERTpp[n]; | |
908 | Double_t * localVERTs = new Double_t[n]; | |
909 | Double_t * localVERTq = new Double_t[n]; | |
910 | Double_t * localVERTpp = new Double_t[n]; | |
911 | // fMaxint changed to localMaxint | |
912 | Int_t localMaxint = n; | |
913 | ||
914 | /* System generated locals */ | |
915 | Int_t aOffset; | |
916 | ||
917 | /* Local variables */ | |
918 | Double_t si; | |
919 | Int_t i, j, k, kp1, km1; | |
920 | ||
921 | /* Parameter adjustments */ | |
922 | aOffset = l + 1; | |
923 | a -= aOffset; | |
924 | ||
925 | /* Function Body */ | |
926 | ifail = 0; | |
927 | if (n < 1) goto L100; | |
928 | if (n > localMaxint) goto L100; | |
929 | //*-*- scale matrix by sqrt of diag elements | |
930 | for (i = 1; i <= n; ++i) { | |
931 | si = a[i + i*l]; | |
932 | if (si <= 0) goto L100; | |
933 | localVERTs[i-1] = 1 / TMath::Sqrt(si); | |
934 | } | |
935 | for (i = 1; i <= n; ++i) { | |
936 | for (j = 1; j <= n; ++j) { | |
937 | a[i + j*l] = a[i + j*l]*localVERTs[i-1]*localVERTs[j-1]; | |
938 | } | |
939 | } | |
940 | //*-*- . . . start main loop . . . . | |
941 | for (i = 1; i <= n; ++i) { | |
942 | k = i; | |
943 | //*-*- preparation for elimination step1 | |
944 | if (a[k + k*l] != 0) localVERTq[k-1] = 1 / a[k + k*l]; | |
945 | else goto L100; | |
946 | localVERTpp[k-1] = 1; | |
947 | a[k + k*l] = 0; | |
948 | kp1 = k + 1; | |
949 | km1 = k - 1; | |
950 | if (km1 < 0) goto L100; | |
951 | else if (km1 == 0) goto L50; | |
952 | else goto L40; | |
953 | L40: | |
954 | for (j = 1; j <= km1; ++j) { | |
955 | localVERTpp[j-1] = a[j + k*l]; | |
956 | localVERTq[j-1] = a[j + k*l]*localVERTq[k-1]; | |
957 | a[j + k*l] = 0; | |
958 | } | |
959 | L50: | |
960 | if (k - n < 0) goto L51; | |
961 | else if (k - n == 0) goto L60; | |
962 | else goto L100; | |
963 | L51: | |
964 | for (j = kp1; j <= n; ++j) { | |
965 | localVERTpp[j-1] = a[k + j*l]; | |
966 | localVERTq[j-1] = -a[k + j*l]*localVERTq[k-1]; | |
967 | a[k + j*l] = 0; | |
968 | } | |
969 | //*-*- elimination proper | |
970 | L60: | |
971 | for (j = 1; j <= n; ++j) { | |
972 | for (k = j; k <= n; ++k) { a[j + k*l] += localVERTpp[j-1]*localVERTq[k-1]; } | |
973 | } | |
974 | } | |
975 | //*-*- elements of left diagonal and unscaling | |
976 | for (j = 1; j <= n; ++j) { | |
977 | for (k = 1; k <= j; ++k) { | |
978 | a[k + j*l] = a[k + j*l]*localVERTs[k-1]*localVERTs[j-1]; | |
979 | a[j + k*l] = a[k + j*l]; | |
980 | } | |
981 | } | |
982 | delete [] localVERTs; | |
983 | delete [] localVERTq; | |
984 | delete [] localVERTpp; | |
985 | return; | |
986 | //*-*- failure return | |
987 | L100: | |
988 | delete [] localVERTs; | |
989 | delete [] localVERTq; | |
990 | delete [] localVERTpp; | |
991 | ifail = 1; | |
992 | } /* mnvertLocal */ | |
993 | ||
04b5ea16 | 994 | //__________________________________________________________________________ |
29f1b13a | 995 | void AliMUONTrackReconstructor::RemoveDoubleTracks(void) |
8429a5e4 | 996 | { |
2457f726 | 997 | /// To remove double tracks. |
998 | /// Tracks are considered identical | |
999 | /// if they have at least half of their hits in common. | |
1000 | /// Among two identical tracks, one keeps the track with the larger number of hits | |
1001 | /// or, if these numbers are equal, the track with the minimum Chi2. | |
8429a5e4 | 1002 | AliMUONTrack *track1, *track2, *trackToRemove; |
8429a5e4 | 1003 | Int_t hitsInCommon, nHits1, nHits2; |
de2cd600 | 1004 | Bool_t removedTrack1; |
1005 | // Loop over first track of the pair | |
1006 | track1 = (AliMUONTrack*) fRecTracksPtr->First(); | |
1007 | while (track1) { | |
1008 | removedTrack1 = kFALSE; | |
1009 | nHits1 = track1->GetNTrackHits(); | |
1010 | // Loop over second track of the pair | |
1011 | track2 = (AliMUONTrack*) fRecTracksPtr->After(track1); | |
1012 | while (track2) { | |
1013 | nHits2 = track2->GetNTrackHits(); | |
1014 | // number of hits in common between two tracks | |
1015 | hitsInCommon = track1->HitsInCommon(track2); | |
1016 | // check for identical tracks | |
1017 | if ((4 * hitsInCommon) >= (nHits1 + nHits2)) { | |
1018 | // decide which track to remove | |
1019 | if ((nHits1 > nHits2) || ((nHits1 == nHits2) && (track1->GetFitFMin() < track2->GetFitFMin()))) { | |
1020 | // remove track2 and continue the second loop with the track next to track2 | |
1021 | trackToRemove = track2; | |
1022 | track2 = (AliMUONTrack*) fRecTracksPtr->After(track2); | |
1023 | fRecTracksPtr->Remove(trackToRemove); | |
1024 | fNRecTracks--; | |
1025 | fRecTracksPtr->Compress(); // this is essential to retrieve the TClonesArray afterwards | |
1026 | } else { | |
1027 | // else remove track1 and continue the first loop with the track next to track1 | |
1028 | trackToRemove = track1; | |
1029 | track1 = (AliMUONTrack*) fRecTracksPtr->After(track1); | |
1030 | fRecTracksPtr->Remove(trackToRemove); | |
1031 | fNRecTracks--; | |
1032 | fRecTracksPtr->Compress(); // this is essential to retrieve the TClonesArray afterwards | |
1033 | removedTrack1 = kTRUE; | |
1034 | break; | |
1035 | } | |
1036 | } else track2 = (AliMUONTrack*) fRecTracksPtr->After(track2); | |
1037 | } // track2 | |
1038 | if (removedTrack1) continue; | |
1039 | track1 = (AliMUONTrack*) fRecTracksPtr->After(track1); | |
1040 | } // track1 | |
d837040f | 1041 | return; |
1042 | } | |
1043 | ||
b8dc484b | 1044 | //__________________________________________________________________________ |
29f1b13a | 1045 | void AliMUONTrackReconstructor::UpdateHitForRecAtHit() |
b8dc484b | 1046 | { |
2457f726 | 1047 | /// Set cluster parameters after track fitting. Fill fHitForRecAtHit of AliMUONTrack's |
b8dc484b | 1048 | AliMUONTrack *track; |
de2cd600 | 1049 | AliMUONTrackParam *trackParamAtHit; |
b8dc484b | 1050 | track = (AliMUONTrack*) fRecTracksPtr->First(); |
1051 | while (track) { | |
de2cd600 | 1052 | trackParamAtHit = (AliMUONTrackParam*) (track->GetTrackParamAtHit()->First()); |
1053 | while (trackParamAtHit) { | |
1054 | track->AddHitForRecAtHit(trackParamAtHit->GetHitForRecPtr()); | |
1055 | trackParamAtHit = (AliMUONTrackParam*) (track->GetTrackParamAtHit()->After(trackParamAtHit)); | |
1056 | } | |
b8dc484b | 1057 | track = (AliMUONTrack*) fRecTracksPtr->After(track); |
de2cd600 | 1058 | } |
b8dc484b | 1059 | return; |
1060 | } | |
1061 | ||
8429a5e4 | 1062 | //__________________________________________________________________________ |
29f1b13a | 1063 | void AliMUONTrackReconstructor::EventDump(void) |
04b5ea16 | 1064 | { |
2457f726 | 1065 | /// Dump reconstructed event (track parameters at vertex and at first hit), |
1066 | /// and the particle parameters | |
04b5ea16 | 1067 | AliMUONTrack *track; |
1068 | AliMUONTrackParam *trackParam, *trackParam1; | |
04b5ea16 | 1069 | Double_t bendingSlope, nonBendingSlope, pYZ; |
1070 | Double_t pX, pY, pZ, x, y, z, c; | |
5e671e06 | 1071 | Int_t trackIndex, nTrackHits; |
04b5ea16 | 1072 | |
b840996b | 1073 | AliDebug(1,"****** enter EventDump ******"); |
1074 | AliDebug(1, Form("Number of Reconstructed tracks : %d", fNRecTracks)); | |
1075 | ||
04b5ea16 | 1076 | fRecTracksPtr->Compress(); // for simple loop without "Next" since no hole |
1077 | // Loop over reconstructed tracks | |
1078 | for (trackIndex = 0; trackIndex < fNRecTracks; trackIndex++) { | |
b840996b | 1079 | AliDebug(1, Form("track number: %d", trackIndex)); |
04b5ea16 | 1080 | // function for each track for modularity ???? |
1081 | track = (AliMUONTrack*) ((*fRecTracksPtr)[trackIndex]); | |
1082 | nTrackHits = track->GetNTrackHits(); | |
b840996b | 1083 | AliDebug(1, Form("Number of track hits: %d ", nTrackHits)); |
04b5ea16 | 1084 | // track parameters at Vertex |
1085 | trackParam = track->GetTrackParamAtVertex(); | |
1086 | x = trackParam->GetNonBendingCoor(); | |
1087 | y = trackParam->GetBendingCoor(); | |
1088 | z = trackParam->GetZ(); | |
1089 | bendingSlope = trackParam->GetBendingSlope(); | |
1090 | nonBendingSlope = trackParam->GetNonBendingSlope(); | |
1091 | pYZ = 1/TMath::Abs(trackParam->GetInverseBendingMomentum()); | |
1092 | pZ = pYZ/TMath::Sqrt(1+bendingSlope*bendingSlope); | |
1093 | pX = pZ * nonBendingSlope; | |
1094 | pY = pZ * bendingSlope; | |
1095 | c = TMath::Sign(1.0, trackParam->GetInverseBendingMomentum()); | |
b840996b | 1096 | AliDebug(1, Form("Track parameters at Vertex z= %f: X= %f Y= %f pX= %f pY= %f pZ= %f c= %f\n", |
1097 | z, x, y, pX, pY, pZ, c)); | |
04b5ea16 | 1098 | |
1099 | // track parameters at first hit | |
de2cd600 | 1100 | trackParam1 = (AliMUONTrackParam*) track->GetTrackParamAtHit()->First(); |
04b5ea16 | 1101 | x = trackParam1->GetNonBendingCoor(); |
1102 | y = trackParam1->GetBendingCoor(); | |
1103 | z = trackParam1->GetZ(); | |
1104 | bendingSlope = trackParam1->GetBendingSlope(); | |
1105 | nonBendingSlope = trackParam1->GetNonBendingSlope(); | |
1106 | pYZ = 1/TMath::Abs(trackParam1->GetInverseBendingMomentum()); | |
1107 | pZ = pYZ/TMath::Sqrt(1.0 + bendingSlope * bendingSlope); | |
1108 | pX = pZ * nonBendingSlope; | |
1109 | pY = pZ * bendingSlope; | |
1110 | c = TMath::Sign(1.0, trackParam1->GetInverseBendingMomentum()); | |
b840996b | 1111 | AliDebug(1, Form("track parameters at z= %f: X= %f Y= %f pX= %f pY= %f pZ= %f c= %f\n", |
1112 | z, x, y, pX, pY, pZ, c)); | |
04b5ea16 | 1113 | } |
8f373020 | 1114 | // informations about generated particles NO !!!!!!!! |
04b5ea16 | 1115 | |
88cb7938 | 1116 | // for (Int_t iPart = 0; iPart < np; iPart++) { |
1117 | // p = gAlice->Particle(iPart); | |
1118 | // printf(" particle %d: type= %d px= %f py= %f pz= %f pdg= %d\n", | |
1119 | // iPart, p->GetPdgCode(), p->Px(), p->Py(), p->Pz(), p->GetPdgCode()); | |
1120 | // } | |
a9e2aefa | 1121 | return; |
1122 | } | |
1123 | ||
276c44b7 | 1124 |