1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 // Class AliMUONTrackK
19 // -------------------------------------
20 // Reconstructed track in the muons system based on the extended
21 // Kalman filter approach
23 // Author: Alexander Zinchenko, JINR Dubna
25 #include <Riostream.h>
26 #include <TClonesArray.h>
30 #include "AliMUONTrackK.h"
33 #include "AliMUONTrackReconstructor.h"
35 #include "AliMUONSegment.h"
36 #include "AliMUONHitForRec.h"
37 #include "AliMUONRawCluster.h"
38 #include "AliMUONTrackParam.h"
39 #include "AliMUONEventRecoCombi.h"
40 #include "AliMUONDetElement.h"
44 const Int_t AliMUONTrackK::fgkSize = 5;
45 const Int_t AliMUONTrackK::fgkNSigma = 12;
46 const Double_t AliMUONTrackK::fgkChi2max = 100;
47 const Int_t AliMUONTrackK::fgkTriesMax = 10000;
48 const Double_t AliMUONTrackK::fgkEpsilon = 0.002;
50 void mnvertLocal(Double_t* a, Int_t l, Int_t m, Int_t n, Int_t& ifail); // from AliMUONTrack
52 Int_t AliMUONTrackK::fgDebug = -1; //-1;
53 Int_t AliMUONTrackK::fgNOfPoints = 0;
54 AliMUONTrackReconstructor* AliMUONTrackK::fgTrackReconstructor = NULL;
55 TClonesArray* AliMUONTrackK::fgHitForRec = NULL;
56 AliMUONEventRecoCombi *AliMUONTrackK::fgCombi = NULL;
58 ClassImp(AliMUONTrackK) // Class implementation in ROOT context
60 //__________________________________________________________________________
61 AliMUONTrackK::AliMUONTrackK()
65 // Default constructor
67 fgTrackReconstructor = NULL; // pointer to event reconstructor
68 fgHitForRec = NULL; // pointer to points
69 fgNOfPoints = 0; // number of points
74 fTrackPar = fTrackParNew = NULL;
75 fCovariance = fWeight = NULL;
77 fParExtrap = fParFilter = fParSmooth = NULL;
78 fCovExtrap = fCovFilter = NULL;
80 fSteps = NULL; fNSteps = 0;
87 //__________________________________________________________________________
88 AliMUONTrackK::AliMUONTrackK(AliMUONTrackReconstructor *TrackReconstructor, TClonesArray *hitForRec)
93 if (!TrackReconstructor) return;
94 fgTrackReconstructor = TrackReconstructor; // pointer to event reconstructor
95 fgHitForRec = hitForRec; // pointer to points
96 fgNOfPoints = fgHitForRec->GetEntriesFast(); // number of points
98 if (fgTrackReconstructor->GetTrackMethod() == 3) fgCombi = AliMUONEventRecoCombi::Instance();
100 fStartSegment = NULL;
104 fTrackPar = fTrackParNew = NULL;
105 fCovariance = fWeight = NULL;
107 fParExtrap = fParFilter = fParSmooth = NULL;
108 fCovExtrap = fCovFilter = NULL;
110 fSteps = NULL; fNSteps = 0;
115 //__________________________________________________________________________
116 AliMUONTrackK::AliMUONTrackK(AliMUONSegment *segment)
117 //: AliMUONTrack(segment, segment, fgTrackReconstructor)
118 : AliMUONTrack(NULL, segment, fgTrackReconstructor)
120 // Constructor from a segment
122 AliMUONHitForRec *hit1, *hit2;
123 AliMUONRawCluster *clus;
124 TClonesArray *rawclusters;
126 fStartSegment = segment;
129 // Pointers to hits from the segment
130 hit1 = segment->GetHitForRec1();
131 hit2 = segment->GetHitForRec2();
132 hit1->SetNTrackHits(hit1->GetNTrackHits()+1); // mark hit as being on track
133 hit2->SetNTrackHits(hit2->GetNTrackHits()+1); // mark hit as being on track
134 // check sorting in Z
135 if (TMath::Abs(hit1->GetZ()) > TMath::Abs(hit2->GetZ())) {
137 hit2 = segment->GetHitForRec1();
139 // memory allocation for the TObjArray of pointers to reconstructed TrackHit's
140 fTrackHits = new TObjArray(13);
144 fTrackPar = new TMatrixD(fgkSize,1); // track parameters
145 fTrackParNew = new TMatrixD(fgkSize,1); // track parameters
146 fCovariance = new TMatrixD(fgkSize,fgkSize); // covariance matrix
147 fWeight = new TMatrixD(fgkSize,fgkSize); // weight matrix (inverse of covariance)
149 // Fill array of track parameters
150 if (hit1->GetChamberNumber() > 7) {
151 // last tracking station
152 (*fTrackPar)(0,0) = hit1->GetBendingCoor(); // y
153 (*fTrackPar)(1,0) = hit1->GetNonBendingCoor(); // x
154 fPosition = hit1->GetZ(); // z
155 fTrackHits->Add(hit2); // add hit 2
156 fTrackHits->Add(hit1); // add hit 1
157 //AZ(Z->-Z) fTrackDir = -1;
160 // last but one tracking station
161 (*fTrackPar)(0,0) = hit2->GetBendingCoor(); // y
162 (*fTrackPar)(1,0) = hit2->GetNonBendingCoor(); // x
163 fPosition = hit2->GetZ(); // z
164 fTrackHits->Add(hit1); // add hit 1
165 fTrackHits->Add(hit2); // add hit 2
166 //AZ(Z->-Z) fTrackDir = 1;
169 dZ = hit2->GetZ() - hit1->GetZ();
170 dY = hit2->GetBendingCoor() - hit1->GetBendingCoor();
171 dX = hit2->GetNonBendingCoor() - hit1->GetNonBendingCoor();
172 (*fTrackPar)(2,0) = TMath::ATan2(dY,dZ); // alpha
173 if ((*fTrackPar)(2,0) < 0.) (*fTrackPar)(2,0) += 2*TMath::Pi(); // from 0 to 2*pi
174 (*fTrackPar)(3,0) = TMath::ATan2(-dX,dZ/TMath::Cos((*fTrackPar)(2,0))); // beta
175 (*fTrackPar)(2,0) -= TMath::Pi();
176 (*fTrackPar)(4,0) = 1/fgTrackReconstructor->GetBendingMomentumFromImpactParam(segment->GetBendingImpact()); // 1/Pt
177 (*fTrackPar)(4,0) *= TMath::Cos((*fTrackPar)(3,0)); // 1/p
178 // Evaluate covariance (and weight) matrix
182 fParExtrap = new TObjArray(15);
183 fParFilter = new TObjArray(15);
184 fCovExtrap = new TObjArray(15);
185 fCovFilter = new TObjArray(15);
186 fJacob = new TObjArray(15);
187 fSteps = new TArrayD(15);
189 fChi2Array = new TArrayD(13);
193 if (fgDebug < 0 ) return;
194 cout << fgTrackReconstructor->GetNRecTracks()-1 << " " << fgTrackReconstructor->GetBendingMomentumFromImpactParam(segment->GetBendingImpact()) << " " << 1/(*fTrackPar)(4,0) << " ";
195 if (fgTrackReconstructor->GetRecTrackRefHits()) {
196 // from track ref. hits
197 cout << ((AliMUONHitForRec*)((*fTrackHits)[0]))->GetTTRTrack() << "<-->" << ((AliMUONHitForRec*)((*fTrackHits)[1]))->GetTTRTrack() << " @ " << fStartSegment->GetHitForRec1()->GetChamberNumber() << endl;
200 for (Int_t i=0; i<2; i++) {
201 hit1 = (AliMUONHitForRec*) ((*fTrackHits)[i]);
202 rawclusters = fgTrackReconstructor->GetMUONData()->RawClusters(hit1->GetChamberNumber());
203 clus = (AliMUONRawCluster*) rawclusters->UncheckedAt(hit1->GetHitNumber());
204 cout << clus->GetTrack(1);
205 if (clus->GetTrack(2) != -1) cout << " " << clus->GetTrack(2);
206 if (i == 0) cout << " <--> ";
208 cout << " @ " << fStartSegment->GetHitForRec1()->GetChamberNumber() << endl;
212 //__________________________________________________________________________
213 AliMUONTrackK::~AliMUONTrackK()
218 //cout << fNmbTrackHits << endl;
219 for (Int_t i = 0; i < fNmbTrackHits; i++) {
220 AliMUONHitForRec *hit = (AliMUONHitForRec*) fTrackHits->UncheckedAt(i);
221 hit->SetNTrackHits(hit->GetNTrackHits()-1);
223 delete fTrackHits; // delete the TObjArray of pointers to TrackHit's
227 delete fTrackPar; delete fTrackParNew; delete fCovariance;
231 if (fSteps) delete fSteps;
232 if (fChi2Array) delete fChi2Array;
233 if (fChi2Smooth) delete fChi2Smooth;
234 if (fParSmooth) {fParSmooth->Delete(); delete fParSmooth; }
235 // Delete only matrices not shared by several tracks
236 if (!fParExtrap) return;
239 for (Int_t i=0; i<fNSteps; i++) {
240 //if (fParExtrap->UncheckedAt(i)->GetUniqueID() > 1)
241 // fParExtrap->UncheckedAt(i)->SetUniqueID(fParExtrap->RemoveAt(i)->GetUniqueID()-1);
242 id = fParExtrap->UncheckedAt(i)->GetUniqueID();
244 fParExtrap->UncheckedAt(i)->SetUniqueID(id-1);
245 fParExtrap->RemoveAt(i);
247 //if (fParFilter->UncheckedAt(i)->GetUniqueID() > 1)
248 // fParFilter->UncheckedAt(i)->SetUniqueID(fParFilter->RemoveAt(i)->GetUniqueID()-1);
249 id = fParFilter->UncheckedAt(i)->GetUniqueID();
251 fParFilter->UncheckedAt(i)->SetUniqueID(id-1);
252 fParFilter->RemoveAt(i);
254 //if (fCovExtrap->UncheckedAt(i)->GetUniqueID() > 1)
255 // fCovExtrap->UncheckedAt(i)->SetUniqueID(fCovExtrap->RemoveAt(i)->GetUniqueID()-1);
256 id = fCovExtrap->UncheckedAt(i)->GetUniqueID();
258 fCovExtrap->UncheckedAt(i)->SetUniqueID(id-1);
259 fCovExtrap->RemoveAt(i);
262 //if (fCovFilter->UncheckedAt(i)->GetUniqueID() > 1)
263 // fCovFilter->UncheckedAt(i)->SetUniqueID(fCovFilter->RemoveAt(i)->GetUniqueID()-1);
264 id = fCovFilter->UncheckedAt(i)->GetUniqueID();
266 fCovFilter->UncheckedAt(i)->SetUniqueID(id-1);
267 fCovFilter->RemoveAt(i);
269 //if (fJacob->UncheckedAt(i)->GetUniqueID() > 1)
270 // fJacob->UncheckedAt(i)->SetUniqueID(fJacob->RemoveAt(i)->GetUniqueID()-1);
271 id = fJacob->UncheckedAt(i)->GetUniqueID();
273 fJacob->UncheckedAt(i)->SetUniqueID(id-1);
278 for (Int_t i=0; i<fNSteps; i++) {
279 if (fParExtrap->UncheckedAt(i)) ((TMatrixD*)fParExtrap->UncheckedAt(i))->Delete();
280 if (fParFilter->UncheckedAt(i)) ((TMatrixD*)fParFilter->UncheckedAt(i))->Delete();
281 if (fCovExtrap->UncheckedAt(i)) ((TMatrixD*)fCovExtrap->UncheckedAt(i))->Delete();
282 cout << fCovFilter->UncheckedAt(i) << " " << (*fSteps)[i] << endl;
283 if (fCovFilter->UncheckedAt(i)) ((TMatrixD*)fCovFilter->UncheckedAt(i))->Delete();
284 if (fJacob->UncheckedAt(i)) ((TMatrixD*)fJacob->UncheckedAt(i))->Delete();
287 fParExtrap->Delete(); fParFilter->Delete();
288 fCovExtrap->Delete(); fCovFilter->Delete();
290 delete fParExtrap; delete fParFilter;
291 delete fCovExtrap; delete fCovFilter;
295 //__________________________________________________________________________
296 AliMUONTrackK::AliMUONTrackK (const AliMUONTrackK& source)
297 : AliMUONTrack(source)
299 // Protected copy constructor
300 AliFatal("Not implemented.");
303 //__________________________________________________________________________
304 AliMUONTrackK & AliMUONTrackK::operator=(const AliMUONTrackK& source)
306 // Assignment operator
308 if(&source == this) return *this;
310 // base class assignement
311 //AZ TObject::operator=(source);
312 AliMUONTrack::operator=(source);
314 fStartSegment = source.fStartSegment;
315 fNmbTrackHits = source.fNmbTrackHits;
316 fChi2 = source.fChi2;
317 fPosition = source.fPosition;
318 fPositionNew = source.fPositionNew;
319 fTrackDir = source.fTrackDir;
320 fBPFlag = source.fBPFlag;
321 fRecover = source.fRecover;
322 fSkipHit = source.fSkipHit;
325 fTrackHits = new TObjArray(*source.fTrackHits);
326 //source.fTrackHits->Dump();
327 //fTrackHits->Dump();
328 for (Int_t i = 0; i < fNmbTrackHits; i++) {
329 AliMUONHitForRec *hit = (AliMUONHitForRec*) fTrackHits->UncheckedAt(i);
330 hit->SetNTrackHits(hit->GetNTrackHits()+1);
333 fTrackPar = new TMatrixD(*source.fTrackPar); // track parameters
334 fTrackParNew = new TMatrixD(*source.fTrackParNew); // track parameters
335 fCovariance = new TMatrixD(*source.fCovariance); // covariance matrix
336 fWeight = new TMatrixD(*source.fWeight); // weight matrix (inverse of covariance)
339 fParExtrap = new TObjArray(*source.fParExtrap);
340 fParFilter = new TObjArray(*source.fParFilter);
341 fCovExtrap = new TObjArray(*source.fCovExtrap);
342 fCovFilter = new TObjArray(*source.fCovFilter);
343 fJacob = new TObjArray(*source.fJacob);
344 fSteps = new TArrayD(*source.fSteps);
345 fNSteps = source.fNSteps;
347 if (source.fChi2Array) fChi2Array = new TArrayD(*source.fChi2Array);
351 for (Int_t i=0; i<fParExtrap->GetEntriesFast(); i++) {
352 fParExtrap->UncheckedAt(i)->SetUniqueID(fParExtrap->UncheckedAt(i)->GetUniqueID()+1);
353 fParFilter->UncheckedAt(i)->SetUniqueID(fParFilter->UncheckedAt(i)->GetUniqueID()+1);
354 fCovExtrap->UncheckedAt(i)->SetUniqueID(fCovExtrap->UncheckedAt(i)->GetUniqueID()+1);
355 fCovFilter->UncheckedAt(i)->SetUniqueID(fCovFilter->UncheckedAt(i)->GetUniqueID()+1);
356 fJacob->UncheckedAt(i)->SetUniqueID(fJacob->UncheckedAt(i)->GetUniqueID()+1);
361 //__________________________________________________________________________
362 void AliMUONTrackK::EvalCovariance(Double_t dZ)
364 // Evaluate covariance (and weight) matrix for track candidate
365 Double_t sigmaB, sigmaNonB, tanA, tanB, dAdY, rad, dBdX, dBdY;
368 sigmaB = fgTrackReconstructor->GetBendingResolution(); // bending resolution
369 sigmaNonB = fgTrackReconstructor->GetNonBendingResolution(); // non-bending resolution
371 (*fWeight)(0,0) = sigmaB*sigmaB; // <yy>
373 (*fWeight)(1,1) = sigmaNonB*sigmaNonB; // <xx>
375 tanA = TMath::Tan((*fTrackPar)(2,0));
376 dAdY = 1/(1+tanA*tanA)/dZ;
377 (*fWeight)(2,2) = dAdY*dAdY*(*fWeight)(0,0)*2; // <aa>
378 (*fWeight)(0,2) = dAdY*(*fWeight)(0,0); // <ya>
379 (*fWeight)(2,0) = (*fWeight)(0,2);
381 rad = dZ/TMath::Cos((*fTrackPar)(2,0));
382 tanB = TMath::Tan((*fTrackPar)(3,0));
383 dBdX = 1/(1+tanB*tanB)/rad;
385 (*fWeight)(3,3) = dBdX*dBdX*(*fWeight)(1,1)*2; // <bb>
386 (*fWeight)(1,3) = dBdX*(*fWeight)(1,1); // <xb>
387 (*fWeight)(3,1) = (*fWeight)(1,3);
389 (*fWeight)(4,4) = ((*fTrackPar)(4,0)*0.5)*((*fTrackPar)(4,0)*0.5); // error 50%
391 // check whether the Invert method returns flag if matrix cannot be inverted,
392 // and do not calculate the Determinant in that case !!!!
393 if (fWeight->Determinant() != 0) {
394 // fWeight->Invert();
396 mnvertLocal(&((*fWeight)(0,0)), fgkSize,fgkSize,fgkSize,ifail);
398 AliWarning(" Determinant fWeight=0:");
403 //__________________________________________________________________________
404 Bool_t AliMUONTrackK::KalmanFilter(Int_t ichamBeg, Int_t ichamEnd, Bool_t Back, Double_t zDipole1, Double_t zDipole2)
406 // Follows track through detector stations
407 Bool_t miss, success;
408 Int_t ichamb, iFB, iMin, iMax, dChamb, ichambOK;
409 Int_t ihit, firstIndx = -1, lastIndx = -1, currIndx = -1, iz0 = -1, iz = -1;
410 Double_t zEnd, dChi2;
411 AliMUONHitForRec *hitAdd, *firstHit = NULL, *lastHit = NULL, *hit;
412 AliMUONRawCluster *clus;
413 TClonesArray *rawclusters;
414 hit = 0; clus = 0; rawclusters = 0;
416 miss = success = kTRUE;
418 //iFB = (ichamEnd == ichamBeg) ? fTrackDir : TMath::Sign(1,ichamEnd-ichamBeg);
419 iFB = (ichamEnd == ichamBeg) ? -fTrackDir : TMath::Sign(1,ichamEnd-ichamBeg);
420 iMin = TMath::Min(ichamEnd,ichamBeg);
421 iMax = TMath::Max(ichamEnd,ichamBeg);
428 if (((AliMUONHitForRec*)fTrackHits->First())->GetChamberNumber() != ichamb) currIndx = 0;
429 } else if (fRecover) {
430 hit = GetHitLastOk();
431 currIndx = fTrackHits->IndexOf(hit);
432 if (currIndx < 0) hit = fStartSegment->GetHitForRec1(); // for station 3
434 ichamb = hit->GetChamberNumber();
435 if (hit == fSkipHit || fRecover == 2 && currIndx >= 0) {
436 // start from the last point or outlier
437 // remove the skipped hit
438 fTrackHits->Remove(fSkipHit); // remove hit
440 fSkipHit->SetNTrackHits(fSkipHit->GetNTrackHits()-1); // unmark hit
445 ichambOK = ((AliMUONHitForRec*)((*fTrackHits)[fNmbTrackHits-1]))->GetChamberNumber();
446 //if (ichambOK >= 8 && ((AliMUONHitForRec*)((*fTrackHits)[0]))->GetChamberNumber() == 6) ichambOK = 6;
447 if (fgTrackReconstructor->GetTrackMethod() == 3 &&
448 fSkipHit->GetHitNumber() < 0) {
449 iz0 = fgCombi->IZfromHit(fSkipHit);
452 else currIndx = fgHitForRec->IndexOf(fSkipHit);
455 fTrackHits->Compress();
457 } // if (hit == fSkipHit)
458 else if (currIndx < 0) currIndx = fTrackHits->IndexOf(hit);
459 } // else if (fRecover)
461 // Get indices of the 1'st and last hits on the track candidate
462 firstHit = (AliMUONHitForRec*) fTrackHits->First();
463 lastHit = (AliMUONHitForRec*) fTrackHits->Last();
464 if (fgTrackReconstructor->GetTrackMethod() == 3 &&
465 lastHit->GetHitNumber() < 0) iz0 = fgCombi->IZfromHit(lastHit);
467 firstIndx = fgHitForRec->IndexOf(firstHit);
468 lastIndx = fgHitForRec->IndexOf(lastHit);
469 currIndx = TMath::Abs (TMath::Max(firstIndx*iFB,lastIndx*iFB));
473 if (iz0 < 0) iz0 = iFB;
474 while (ichamb >= iMin && ichamb <= iMax) {
475 // Find the closest hit in Z, not belonging to the current plane
478 if (currIndx < fNmbTrackHits) {
479 hitAdd = (AliMUONHitForRec*) fTrackHits->UncheckedAt(currIndx);
480 zEnd = hitAdd->GetZ();
481 //AZ(z->-z) } else zEnd = -9999;
484 //AZ(Z->-Z) zEnd = -9999;
486 for (ihit=currIndx+iFB; ihit>=0 && ihit<fgNOfPoints; ihit+=iFB) {
487 hitAdd = (AliMUONHitForRec*) ((*fgHitForRec)[ihit]);
488 //if (TMath::Abs(hitAdd->GetZ()-fPosition) > 0.1) {
489 if (TMath::Abs(hitAdd->GetZ()-fPosition) > 0.5) {
490 zEnd = hitAdd->GetZ();
496 // Combined cluster / track finder
497 if (zEnd > 999 && iFB < 0 && fgTrackReconstructor->GetTrackMethod() == 3) {
499 AliMUONHitForRec hitTmp;
500 for (iz = iz0 - iFB; iz < fgCombi->Nz(); iz++) {
501 if (TMath::Abs(fgCombi->Z(iz)-fPosition) < 0.5) continue;
502 Int_t *pDEatZ = fgCombi->DEatZ(iz);
503 //cout << iz << " " << fgCombi->Z(iz) << endl;
504 zEnd = fgCombi->Z(iz);
506 AliMUONDetElement *detElem = fgCombi->DetElem(pDEatZ[0]);
508 hitAdd->SetChamberNumber(detElem->Chamber());
509 //hitAdd = (AliMUONHitForRec*) detElem->HitsForRec()->First();
514 if (zEnd>999 && ichamb==ichamEnd) endOfProp = 1; // end-of-propagation
516 // Check if there is a chamber without hits
517 if (zEnd>999 || TMath::Abs(hitAdd->GetChamberNumber()-ichamb) > 1) {
518 if (!Back && zEnd<999) currIndx -= iFB;
520 zEnd = AliMUONConstants::DefaultChamberZ(ichamb);
523 ichamb = hitAdd->GetChamberNumber();
527 if (ichamb<iMin || ichamb>iMax) break;
528 // Check for missing station
530 dChamb = TMath::Abs(ichamb-ichambOK);
531 //cout << dChamb << " " << ichambOK << " " << fgNOfPoints << endl;
532 Int_t dStatMiss = TMath::Abs (ichamb/2 - ichambOK/2);
533 if (zEnd > 999) dStatMiss++;
535 //if (dStatMiss == 2 && ichambOK/2 != 3 || dStatMiss > 2) { // AZ - missing st. 3
536 // missing station - abandon track
537 //cout << dChamb << " " << ichambOK << " " << fgNOfPoints << " " << 1/(*fTrackPar)(4,0) << endl;
539 for (Int_t i1=0; i1<fgNOfPoints; i1++) {
540 cout << " Hit #" << ((AliMUONHitForRec*)((*fgHitForRec)[i1]))->GetChamberNumber() << " ";
541 cout << ((AliMUONHitForRec*)((*fgHitForRec)[i1]))->GetBendingCoor() << " ";
542 cout << ((AliMUONHitForRec*)((*fgHitForRec)[i1]))->GetNonBendingCoor() << " ";
543 cout << ((AliMUONHitForRec*)((*fgHitForRec)[i1]))->GetZ() << " " << " ";
544 cout << ((AliMUONHitForRec*)((*fgHitForRec)[i1]))->GetTTRTrack() << endl;
547 cout << fNmbTrackHits << endl;
548 for (Int_t i1=0; i1<fNmbTrackHits; i1++) {
549 hit = (AliMUONHitForRec*) ((*fTrackHits)[i1]);
550 printf(" * %d %10.4f %10.4f %10.4f",
551 hit->GetChamberNumber(), hit->GetBendingCoor(),
552 hit->GetNonBendingCoor(), hit->GetZ());
553 if (fgTrackReconstructor->GetRecTrackRefHits()) {
554 // from track ref. hits
555 printf(" %3d %3d \n", hit->GetTrackRefSignal(), hit->GetTTRTrack());
558 rawclusters = fgTrackReconstructor->GetMUONData()->RawClusters(hit->GetChamberNumber());
559 clus = (AliMUONRawCluster*) rawclusters->UncheckedAt(hit->GetHitNumber());
560 printf("%3d", clus->GetTrack(1)-1);
561 if (clus->GetTrack(2) != 0) printf("%3d \n", clus->GetTrack(2)-1);
565 } // if (fgDebug >= 10)
566 if (fNmbTrackHits>2 && fRecover==0) Recover(); // try to recover track later
568 } // if (dStatMiss > 1)
570 if (endOfProp != 0) break;
572 // propagate to the found Z
574 // Check if track steps into dipole
575 //AZ(z->-z) if (fPosition>zDipole2 && zEnd<zDipole2) {
576 if (fPosition<zDipole2 && zEnd>zDipole2) {
577 //LinearPropagation(zDipole2-zBeg);
578 ParPropagation(zDipole2);
579 MSThin(1); // multiple scattering in the chamber
580 WeightPropagation(zDipole2, kTRUE); // propagate weight matrix
581 fPosition = fPositionNew;
582 *fTrackPar = *fTrackParNew;
583 //MagnetPropagation(zEnd);
584 ParPropagation(zEnd);
585 WeightPropagation(zEnd, kTRUE);
586 fPosition = fPositionNew;
588 // Check if track steps out of dipole
589 //AZ(z->-z) else if (fPosition>zDipole1 && zEnd<zDipole1) {
590 else if (fPosition<zDipole1 && zEnd>zDipole1) {
591 //MagnetPropagation(zDipole1-zBeg);
592 ParPropagation(zDipole1);
593 MSThin(1); // multiple scattering in the chamber
594 WeightPropagation(zDipole1, kTRUE);
595 fPosition = fPositionNew;
596 *fTrackPar = *fTrackParNew;
597 //LinearPropagation(zEnd-zDipole1);
598 ParPropagation(zEnd);
599 WeightPropagation(zEnd, kTRUE);
600 fPosition = fPositionNew;
602 ParPropagation(zEnd);
603 //MSThin(1); // multiple scattering in the chamber
604 if (TMath::Abs(zEnd-fPosition) > 5) MSThin(1); // multiple scattering in the chamber
605 WeightPropagation(zEnd, kTRUE);
606 fPosition = fPositionNew;
610 if (fRecover != 0 && hitAdd == fSkipHit && !miss) {
611 // recovered track - remove the hit
613 ichamb = fSkipHit->GetChamberNumber();
614 // remove the skipped hit
615 fTrackHits->Remove(fSkipHit);
617 //AZ fSkipHit->SetNTrackHits(fSkipHit->GetNTrackHits()-1); // unmark hit
620 ichambOK = ((AliMUONHitForRec*)((*fTrackHits)[fNmbTrackHits-1]))->GetChamberNumber();
621 //? if (fgTrackReconstructor->GetTrackMethod() != 3) currIndx = fgHitForRec->IndexOf(fSkipHit);
622 currIndx = fgHitForRec->IndexOf(fSkipHit);
626 // backward propagator
628 TMatrixD pointWeight(fgkSize,fgkSize);
629 TMatrixD point(fgkSize,1);
630 TMatrixD trackParTmp = point;
631 point(0,0) = hitAdd->GetBendingCoor();
632 point(1,0) = hitAdd->GetNonBendingCoor();
633 pointWeight(0,0) = 1/hitAdd->GetBendingReso2();
634 pointWeight(1,1) = 1/hitAdd->GetNonBendingReso2();
635 TryPoint(point,pointWeight,trackParTmp,dChi2);
636 *fTrackPar = trackParTmp;
637 *fWeight += pointWeight;
638 if (fTrackDir > 0) AddMatrices (this, dChi2, hitAdd);
639 fChi2 += dChi2; // Chi2
640 } else *fTrackPar = *fTrackParNew; // adjust end point to the last hit
641 if (ichamb==ichamEnd) break;
644 // forward propagator
645 if (miss || !FindPoint(ichamb, zEnd, currIndx, iFB, hitAdd, iz)) {
647 *fTrackPar = *fTrackParNew;
650 fTrackHits->Add(hitAdd); // add hit
652 hitAdd->SetNTrackHits(hitAdd->GetNTrackHits()+1); // mark hit as being on track
654 currIndx = fgHitForRec->IndexOf(hitAdd); // Check
658 if (fgDebug > 0) cout << fNmbTrackHits << " " << fChi2 << " " << 1/(*fTrackPar)(4,0) << " " << fPosition << endl;
659 if (1/TMath::Abs((*fTrackPar)(4,0)) < fgTrackReconstructor->GetMinBendingMomentum()) success = kFALSE; // p < p_min
663 //__________________________________________________________________________
664 void AliMUONTrackK::ParPropagation(Double_t zEnd)
666 // Propagation of track parameters to zEnd
668 Double_t dZ, step, distance, charge;
669 Double_t vGeant3[7], vGeant3New[7];
670 AliMUONTrackParam trackParam;
673 // First step using linear extrapolation
674 dZ = zEnd - fPosition;
675 fPositionNew = fPosition;
676 *fTrackParNew = *fTrackPar;
677 if (dZ == 0) return; //AZ ???
678 iFB = (Int_t)TMath::Sign(Double_t(1.0),dZ);
679 step = dZ/TMath::Cos((*fTrackPar)(2,0))/TMath::Cos((*fTrackPar)(3,0)); // linear estimate
680 //AZ(z->-z) charge = iFB*TMath::Sign(Double_t(1.0),(*fTrackPar)(4,0));
681 charge = -iFB*TMath::Sign(Double_t(1.0),(*fTrackPar)(4,0));
682 SetGeantParam(vGeant3,iFB);
683 //fTrackParNew->Print();
687 step = TMath::Abs(step);
688 // Propagate parameters
689 trackParam.ExtrapOneStepRungekutta(charge,step,vGeant3,vGeant3New);
690 //extrap_onestep_rungekutta(charge,step,vGeant3,vGeant3New);
691 distance = zEnd - vGeant3New[2];
692 step *= dZ/(vGeant3New[2]-fPositionNew);
694 } while (distance*iFB < 0 && TMath::Abs(distance) > fgkEpsilon);
696 GetFromGeantParam(vGeant3New,iFB);
697 //fTrackParNew->Print();
699 // Position adjustment (until within tolerance)
700 while (TMath::Abs(distance) > fgkEpsilon) {
701 dZ = zEnd - fPositionNew;
702 iFB = (Int_t)TMath::Sign(Double_t(1.0),dZ);
703 step = dZ/TMath::Cos((*fTrackParNew)(2,0))/TMath::Cos((*fTrackParNew)(3,0));
704 step = TMath::Abs(step);
705 SetGeantParam(vGeant3,iFB);
708 // Propagate parameters
709 trackParam.ExtrapOneStepRungekutta(charge,step,vGeant3,vGeant3New);
710 //extrap_onestep_rungekutta(charge,step,vGeant3,vGeant3New);
711 distance = zEnd - vGeant3New[2];
714 if (nTries > fgkTriesMax) AliError(Form(" Too many tries: %d", nTries));
715 } while (distance*iFB < 0);
717 GetFromGeantParam(vGeant3New,iFB);
719 //cout << nTries << endl;
720 //fTrackParNew->Print();
724 //__________________________________________________________________________
725 void AliMUONTrackK::WeightPropagation(Double_t zEnd, Bool_t smooth)
727 // Propagation of the weight matrix
728 // W = DtWD, where D is Jacobian
732 TMatrixD jacob(fgkSize,fgkSize);
735 // Save initial and propagated parameters
736 TMatrixD trackPar0 = *fTrackPar;
737 TMatrixD trackParNew0 = *fTrackParNew;
739 // Get covariance matrix
740 *fCovariance = *fWeight;
741 // check whether the Invert method returns flag if matrix cannot be inverted,
742 // and do not calculate the Determinant in that case !!!!
743 if (fCovariance->Determinant() != 0) {
745 mnvertLocal(&((*fCovariance)(0,0)), fgkSize,fgkSize,fgkSize,ifail);
746 //fCovariance->Print();
748 AliWarning(" Determinant fCovariance=0:");
751 // Loop over parameters to find change of the propagated vs initial ones
752 for (i=0; i<fgkSize; i++) {
753 dPar = TMath::Sqrt((*fCovariance)(i,i));
754 *fTrackPar = trackPar0;
755 if (i == 4) dPar *= TMath::Sign(1.,-trackPar0(4,0)); // 1/p
756 (*fTrackPar)(i,0) += dPar;
757 ParPropagation(zEnd);
758 for (j=0; j<fgkSize; j++) {
759 jacob(j,i) = ((*fTrackParNew)(j,0)-trackParNew0(j,0))/dPar;
763 //trackParNew0.Print();
764 //TMatrixD par1(jacob,TMatrixD::kMult,trackPar0); //
766 TMatrixD jacob0 = jacob;
767 if (jacob.Determinant() != 0) {
770 AliWarning(" Determinant jacob=0:");
772 TMatrixD weight1(*fWeight,TMatrixD::kMult,jacob); // WD
773 *fWeight = TMatrixD(jacob,TMatrixD::kTransposeMult,weight1); // DtWD
775 // Restore initial and propagated parameters
776 *fTrackPar = trackPar0;
777 *fTrackParNew = trackParNew0;
780 if (!smooth) return; // do not use smoother
781 if (fTrackDir < 0) return; // only for propagation towards int. point
782 TMatrixD *tmp = new TMatrixD(*fTrackParNew); // extrapolated parameters
783 fParExtrap->Add(tmp);
785 tmp = new TMatrixD(*fTrackParNew); // filtered parameters (if no measurement will be found)
786 fParFilter->Add(tmp);
788 *fCovariance = *fWeight;
789 if (fCovariance->Determinant() != 0) {
791 mnvertLocal(&((*fCovariance)(0,0)), fgkSize,fgkSize,fgkSize,ifail);
793 AliWarning(" Determinant fCovariance=0:");
795 tmp = new TMatrixD(*fCovariance); // extrapolated covariance
796 fCovExtrap->Add(tmp);
798 tmp = new TMatrixD(*fCovariance); // filtered covariance (if no measurement will be found)
799 fCovFilter->Add(tmp);
801 tmp = new TMatrixD(jacob0); // Jacobian
804 if (fSteps->fN <= fNSteps) fSteps->Set(fSteps->fN+10);
805 fSteps->AddAt(fPositionNew,fNSteps++);
806 if (fgDebug > 0) cout << " WeightPropagation " << fNSteps << " " << fPositionNew << endl;
810 //__________________________________________________________________________
811 Bool_t AliMUONTrackK::FindPoint(Int_t ichamb, Double_t zEnd, Int_t currIndx, Int_t iFB, AliMUONHitForRec *&hitAdd, Int_t iz)
813 // Picks up point within a window for the chamber No ichamb
814 // Split the track if there are more than 1 hit
815 Int_t ihit, nRecTracks;
816 Double_t windowB, windowNonB, dChi2Tmp=0, dChi2, y, x, savePosition=0;
817 TClonesArray *trackPtr;
818 AliMUONHitForRec *hit, *hitLoop;
819 AliMUONTrackK *trackK;
820 AliMUONDetElement *detElem = NULL;
824 if (fgTrackReconstructor->GetTrackMethod() == 3 && iz >= 0) {
825 // Combined cluster / track finder
826 // Check if extrapolated track passes thru det. elems. at iz
827 Int_t *pDEatZ = fgCombi->DEatZ(iz);
828 Int_t nDetElem = pDEatZ[-1];
829 //cout << fgCombi->Z(iz) << " " << nDetElem << endl;
830 for (Int_t i = 0; i < nDetElem; i++) {
831 detElem = fgCombi->DetElem(pDEatZ[i]);
832 if (detElem->Inside((*fTrackParNew)(1,0), (*fTrackParNew)(0,0), fPosition)) {
833 detElem->ClusterReco((*fTrackParNew)(1,0), (*fTrackParNew)(0,0));
834 hitAdd = (AliMUONHitForRec*) detElem->HitsForRec()->First();
839 if (!ok) return ok; // outside det. elem.
843 //sigmaB = fgTrackReconstructor->GetBendingResolution(); // bending resolution
844 //sigmaNonB = fgTrackReconstructor->GetNonBendingResolution(); // non-bending resolution
845 *fCovariance = *fWeight;
846 // check whether the Invert method returns flag if matrix cannot be inverted,
847 // and do not calculate the Determinant in that case !!!!
848 if (fCovariance->Determinant() != 0) {
850 mnvertLocal(&((*fCovariance)(0,0)), fgkSize,fgkSize,fgkSize,ifail);
852 AliWarning(" Determinant fCovariance=0:");
854 //windowB = fgkNSigma*TMath::Sqrt((*fCovariance)(0,0)+sigmaB*sigmaB);
855 //windowNonB = fgkNSigma*TMath::Sqrt((*fCovariance)(1,1)+sigmaNonB*sigmaNonB);
856 // Loop over all hits and take hits from the chamber
857 TMatrixD pointWeight(fgkSize,fgkSize);
858 TMatrixD saveWeight = pointWeight;
859 TMatrixD pointWeightTmp = pointWeight;
860 TMatrixD point(fgkSize,1);
861 TMatrixD trackPar = point;
862 TMatrixD trackParTmp = point;
863 Int_t nHitsOK = 0, ihitB = currIndx, ihitE = fgNOfPoints, iDhit = iFB;
865 zLast = ((AliMUONHitForRec*)fTrackHits->Last())->GetZ();
866 if (fgTrackReconstructor->GetTrackMethod() == 3 && detElem) {
868 ihitE = detElem->NHitsForRec();
873 for (ihit = ihitB; ihit >= 0 && ihit < ihitE; ihit+=iDhit) {
874 if (fgTrackReconstructor->GetTrackMethod() != 3 || !detElem)
875 hit = (AliMUONHitForRec*) ((*fgHitForRec)[ihit]);
876 else hit = (AliMUONHitForRec*) detElem->HitsForRec()->UncheckedAt(ihit);
877 if (hit->GetChamberNumber() == ichamb) {
878 //if (TMath::Abs(hit->GetZ()-zEnd) < 0.1) {
879 if (TMath::Abs(hit->GetZ()-zEnd) < 0.5) {
880 y = hit->GetBendingCoor();
881 x = hit->GetNonBendingCoor();
882 if (hit->GetBendingReso2() < 0) {
883 // Combined cluster / track finder
884 hit->SetBendingReso2(fgTrackReconstructor->GetBendingResolution()*
885 fgTrackReconstructor->GetBendingResolution());
886 hit->SetNonBendingReso2(fgTrackReconstructor->GetNonBendingResolution()*
887 fgTrackReconstructor->GetNonBendingResolution());
889 windowB = fgkNSigma*TMath::Sqrt((*fCovariance)(0,0)+hit->GetBendingReso2());
890 windowNonB = fgkNSigma*TMath::Sqrt((*fCovariance)(1,1)+hit->GetNonBendingReso2());
892 // windowB = TMath::Min (windowB,5.);
893 if (fgkNSigma > 6) windowB = TMath::Min (windowB,5.);
895 if (TMath::Abs(hit->GetZ()-zLast) < 50) {
896 windowB = TMath::Min (windowB,0.5);
897 windowNonB = TMath::Min (windowNonB,3.);
898 } else if (TMath::Abs(hit->GetZ()-zLast) < 200) {
899 windowB = TMath::Min (windowB,1.5);
900 windowNonB = TMath::Min (windowNonB,3.);
901 } else if (TMath::Abs(hit->GetZ()-zLast) < 350) {
902 windowB = TMath::Min (windowB,4.);
903 windowNonB = TMath::Min (windowNonB,6.);
909 if (TMath::Abs(hit->GetZ()-zLast) < 50) {
910 windowB = 5*TMath::Sqrt((*fCovariance)(0,0)+hit->GetBendingReso2());
911 windowNonB = 5*TMath::Sqrt((*fCovariance)(1,1)+hit->GetNonBendingReso2());
913 windowB = fgkNSigma*TMath::Sqrt((*fCovariance)(0,0)+hit->GetBendingReso2());
914 windowNonB = fgkNSigma*TMath::Sqrt((*fCovariance)(1,1)+hit->GetNonBendingReso2());
918 //cout << TMath::Abs((*fTrackParNew)(0,0)-y) << " " << windowB << " " << TMath::Abs((*fTrackParNew)(1,0)-x) << " " << windowNonB << " " << zEnd << endl;
919 if (TMath::Abs((*fTrackParNew)(0,0)-y) <= windowB &&
920 TMath::Abs((*fTrackParNew)(1,0)-x) <= windowNonB) {
921 //if (TMath::Abs((*fTrackParNew)(0,0)-y) <= windowB &&
922 // TMath::Abs((*fTrackParNew)(1,0)-x) <= windowNonB &&
923 // hit->GetTrackRefSignal() == 1) { // just for test
924 // Vector of measurements and covariance matrix
925 //fprintf(lun1,"%3d %3d %10.4f %10.4f \n", gAlice->GetEvNumber(), ichamb, x, y);
926 if (TMath::Abs(hit->GetZ()-zEnd) > 0.05) {
927 // Adjust position: for multiple hits in the chamber or misalignment (Z as a function of X or Y)
928 //AliWarning(Form(" *** adjust %f %f ", zEnd, hit->GetZ()));
930 *fTrackPar = *fTrackParNew;
931 ParPropagation(zEnd);
932 WeightPropagation(zEnd, kTRUE);
933 fPosition = fPositionNew;
934 *fTrackPar = *fTrackParNew;
936 *fCovariance = *fWeight;
937 if (fCovariance->Determinant() != 0) {
939 mnvertLocal(&((*fCovariance)(0,0)), fgkSize,fgkSize,fgkSize,ifail);
941 AliWarning(" Determinant fCovariance=0:" );
947 pointWeight(0,0) = 1/hit->GetBendingReso2();
948 pointWeight(1,1) = 1/hit->GetNonBendingReso2();
949 TryPoint(point,pointWeight,trackPar,dChi2);
950 if (TMath::Abs(1./(trackPar)(4,0)) < fgTrackReconstructor->GetMinBendingMomentum()) continue; // p < p_min - next hit
951 // if (TMath::Sign(1.,(trackPar)(4,0)*(*fTrackPar)(4,0)) < 0) continue; // change of sign
954 //if (nHitsOK > -1) {
956 // Save current members
957 saveWeight = *fWeight;
958 savePosition = fPosition;
959 // temporary storage for the current track
961 trackParTmp = trackPar;
962 pointWeightTmp = pointWeight;
964 if (fgDebug > 0) cout << " Added point: " << x << " " << y << " " << dChi2 << endl;
966 // branching: create a new track
967 trackPtr = fgTrackReconstructor->GetRecTracksPtr();
968 nRecTracks = fgTrackReconstructor->GetNRecTracks();
969 trackK = new ((*trackPtr)[nRecTracks]) AliMUONTrackK(NULL, NULL);
971 fgTrackReconstructor->SetNRecTracks(nRecTracks+1);
972 if (fgDebug > 0) cout << " ******** New track: " << ichamb << " " << hit->GetTTRTrack() << " " << 1/(trackPar)(4,0) << " " << hit->GetBendingCoor() << " " << hit->GetNonBendingCoor() << " " << fNmbTrackHits << " " << nRecTracks << endl;
973 trackK->fRecover = 0;
974 *(trackK->fTrackPar) = trackPar;
975 *(trackK->fWeight) += pointWeight;
976 trackK->fChi2 += dChi2;
979 *(trackK->fCovariance) = *(trackK->fWeight);
980 if (trackK->fCovariance->Determinant() != 0) {
982 mnvertLocal(&((*(trackK->fCovariance))(0,0)), fgkSize,fgkSize,fgkSize,ifail);
984 cout << (*(trackK->fCovariance))(0,0) << " " << (*(trackK->fCovariance))(1,1) << " " << (*fCovariance)(0,0) << " " << (*fCovariance)(1,1) << endl;
986 // Add filtered matrices for the smoother
988 if (nHitsOK > 2) { // check for position adjustment
989 for (Int_t i=trackK->fNSteps-1; i>=0; i--) {
990 if (TMath::Abs(hit->GetZ()-(*trackK->fSteps)[i]) > 0.1) {
991 //if (TMath::Abs(hit->GetZ()-(trackK->fSteps)[i]) > 0.1) {
992 RemoveMatrices(trackK);
993 AliError(Form(" *** Position adjustment 1: %f %f", hit->GetZ(), (*trackK->fSteps)[i]));
998 AddMatrices (trackK, dChi2, hit);
1000 // Mark hits as being on 2 tracks
1001 for (Int_t i=0; i<fNmbTrackHits; i++) {
1002 hitLoop = (AliMUONHitForRec*) ((*fTrackHits)[i]);
1003 //AZ hitLoop->SetNTrackHits(hitLoop->GetNTrackHits()+1);
1006 cout << hitLoop->GetChamberNumber() << " ";
1007 cout << hitLoop->GetBendingCoor() << " ";
1008 cout << hitLoop->GetNonBendingCoor() << " ";
1009 cout << hitLoop->GetZ() << " " << " ";
1010 cout << hitLoop->GetTrackRefSignal() << " " << " ";
1011 cout << hitLoop->GetTTRTrack() << endl;
1012 printf(" ** %d %10.4f %10.4f %10.4f %d %d \n",
1013 hitLoop->GetChamberNumber(), hitLoop->GetBendingCoor(),
1014 hitLoop->GetNonBendingCoor(), hitLoop->GetZ(),
1015 hitLoop->GetTrackRefSignal(), hitLoop->GetTTRTrack());
1019 trackK->fTrackHits->Add(hit); // add hit
1020 trackK->fNmbTrackHits ++;
1021 hit->SetNTrackHits(hit->GetNTrackHits()+1); // mark hit as being on track
1024 trackK->fTrackDir = 1;
1025 trackK->fBPFlag = kTRUE;
1030 } else break; // different chamber
1031 } // for (ihit=currIndx;
1034 *fTrackPar = trackParTmp;
1035 *fWeight = saveWeight;
1036 *fWeight += pointWeightTmp;
1037 fChi2 += dChi2Tmp; // Chi2
1038 fPosition = savePosition;
1039 // Add filtered matrices for the smoother
1040 if (fTrackDir > 0) {
1041 for (Int_t i=fNSteps-1; i>=0; i--) {
1042 if (TMath::Abs(fPosition-(*fSteps)[i]) > 0.1) {
1043 //if (TMath::Abs(fPosition-fSteps[i]) > 0.1) {
1044 RemoveMatrices(this);
1045 if (fgDebug > 0) cout << " *** Position adjustment 2 " << fPosition << " " << (*fSteps)[i] << endl;
1048 } // for (Int_t i=fNSteps-1;
1049 AddMatrices (this, dChi2Tmp, hitAdd);
1052 for (Int_t i=0; i<fNSteps; i++) cout << (*fSteps)[i] << " "; cout << endl;
1053 for (Int_t i=0; i<trackK->fNSteps; i++) cout << (*trackK->fSteps)[i] << " "; cout << endl;
1056 } // if (fTrackDir > 0)
1061 //__________________________________________________________________________
1062 void AliMUONTrackK::TryPoint(TMatrixD &point, const TMatrixD &pointWeight, TMatrixD &trackParTmp, Double_t &dChi2)
1064 // Adds a measurement point (modifies track parameters and computes
1067 // Solving linear system (W+U)p' = U(m-p) + (W+U)p
1068 TMatrixD wu = *fWeight;
1069 wu += pointWeight; // W+U
1070 trackParTmp = point;
1071 trackParTmp -= *fTrackParNew; // m-p
1072 TMatrixD right(pointWeight,TMatrixD::kMult,trackParTmp); // U(m-p)
1073 TMatrixD right1(wu,TMatrixD::kMult,*fTrackParNew); // (W+U)p
1074 right += right1; // U(m-p) + (W+U)p
1076 // check whether the Invert method returns flag if matrix cannot be inverted,
1077 // and do not calculate the Determinant in that case !!!!
1078 if (wu.Determinant() != 0) {
1080 mnvertLocal(&((wu)(0,0)), fgkSize,fgkSize,fgkSize,ifail);
1082 AliWarning(" Determinant wu=0:");
1084 trackParTmp = TMatrixD(wu,TMatrixD::kMult,right);
1086 right1 = trackParTmp;
1087 right1 -= point; // p'-m
1088 point = trackParTmp;
1089 point -= *fTrackParNew; // p'-p
1090 right = TMatrixD(*fWeight,TMatrixD::kMult,point); // W(p'-p)
1091 TMatrixD value(point,TMatrixD::kTransposeMult,right); // (p'-p)'W(p'-p)
1093 right = TMatrixD(pointWeight,TMatrixD::kMult,right1); // U(p'-m)
1094 value = TMatrixD(right1,TMatrixD::kTransposeMult,right); // (p'-m)'U(p'-m)
1095 dChi2 += value(0,0);
1099 //__________________________________________________________________________
1100 void AliMUONTrackK::MSThin(Int_t sign)
1102 // Adds multiple scattering in a thin layer (only angles are affected)
1103 Double_t cosAlph, cosBeta, momentum, velo, path, theta0;
1105 // check whether the Invert method returns flag if matrix cannot be inverted,
1106 // and do not calculate the Determinant in that case !!!!
1107 if (fWeight->Determinant() != 0) {
1109 mnvertLocal(&((*fWeight)(0,0)), fgkSize,fgkSize,fgkSize,ifail);
1111 AliWarning(" Determinant fWeight=0:");
1114 cosAlph = TMath::Cos((*fTrackParNew)(2,0));
1115 cosBeta = TMath::Cos((*fTrackParNew)(3,0));
1116 momentum = 1/(*fTrackParNew)(4,0); // particle momentum
1117 //velo = momentum/TMath::Sqrt(momentum*momentum+muonMass*muonMass); // velocity/c for muon hypothesis
1118 velo = 1; // relativistic
1119 path = TMath::Abs(fgTrackReconstructor->GetChamberThicknessInX0()/cosAlph/cosBeta); // path length
1120 theta0 = 0.0136/velo/momentum*TMath::Sqrt(path)*(1+0.038*TMath::Log(path)); // projected scattering angle
1122 (*fWeight)(2,2) += sign*theta0/cosBeta*theta0/cosBeta; // alpha
1123 (*fWeight)(3,3) += sign*theta0*theta0; // beta
1125 mnvertLocal(&((*fWeight)(0,0)), fgkSize,fgkSize,fgkSize,ifail);
1129 //__________________________________________________________________________
1130 void AliMUONTrackK::StartBack(void)
1132 // Starts backpropagator
1136 for (Int_t i=0; i<fgkSize; i++) {
1137 for (Int_t j=0; j<fgkSize; j++) {
1138 if (j==i) (*fWeight)(i,i) /= 100;
1139 //if (j==i) (*fWeight)(i,i) /= fNmbTrackHits*fNmbTrackHits;
1140 else (*fWeight)(j,i) = 0;
1143 // Sort hits on track in descending order in abs(z)
1144 SortHits(0, fTrackHits);
1147 //__________________________________________________________________________
1148 void AliMUONTrackK::SortHits(Int_t iflag, TObjArray *array)
1150 // Sort hits in Z if the seed segment in the last but one station
1151 // (if iflag==0 in descending order in abs(z), if !=0 - unsort)
1153 if (iflag && ((AliMUONHitForRec*)(array->UncheckedAt(0)))->GetChamberNumber() == 6) return;
1154 Double_t z = 0, zmax = TMath::Abs(((AliMUONHitForRec*)(array->UncheckedAt(0)))->GetZ());
1155 Int_t i = 1, entries = array->GetEntriesFast();
1156 for ( ; i<entries; i++) {
1158 if (((AliMUONHitForRec*)(array->UncheckedAt(i)))->GetChamberNumber() == 6) break;
1160 z = TMath::Abs(((AliMUONHitForRec*)(array->UncheckedAt(i)))->GetZ());
1161 if (z < zmax) break;
1163 if (fgDebug >= 10) cout << " " << zmax << " " << z << " " << i << endl;
1167 for (Int_t j=0; j<=(i-1)/2; j++) {
1168 TObject *hit = array->UncheckedAt(j);
1169 array->AddAt(array->UncheckedAt(i-j),j);
1170 array->AddAt(hit,i-j);
1172 if (fgDebug >= 10) {
1173 for (i=0; i<entries; i++)
1174 cout << ((AliMUONHitForRec*)(array->UncheckedAt(i)))->GetZ() << " ";
1175 cout << " - Sort" << endl;
1179 //__________________________________________________________________________
1180 void AliMUONTrackK::SetGeantParam(Double_t *VGeant3, Int_t iFB)
1182 // Set vector of Geant3 parameters pointed to by "VGeant3"
1183 // from track parameters
1185 VGeant3[0] = (*fTrackParNew)(1,0); // X
1186 VGeant3[1] = (*fTrackParNew)(0,0); // Y
1187 VGeant3[2] = fPositionNew; // Z
1188 VGeant3[3] = iFB*TMath::Sin((*fTrackParNew)(3,0)); // Px/Ptot
1189 VGeant3[4] = iFB*TMath::Cos((*fTrackParNew)(3,0))*TMath::Sin((*fTrackParNew)(2,0)); // Py/Ptot
1190 VGeant3[5] = iFB*TMath::Sqrt(1.0-VGeant3[3]*VGeant3[3]-VGeant3[4]*VGeant3[4]); // Pz/Ptot
1191 VGeant3[6] = 1/TMath::Abs((*fTrackParNew)(4,0)); // Ptot
1194 //__________________________________________________________________________
1195 void AliMUONTrackK::GetFromGeantParam(Double_t *VGeant3, Int_t iFB)
1197 // Get track parameters from vector of Geant3 parameters pointed
1200 fPositionNew = VGeant3[2]; // Z
1201 (*fTrackParNew)(0,0) = VGeant3[1]; // Y
1202 (*fTrackParNew)(1,0) = VGeant3[0]; // X
1203 (*fTrackParNew)(3,0) = TMath::ASin(iFB*VGeant3[3]); // beta
1204 (*fTrackParNew)(2,0) = TMath::ASin(iFB*VGeant3[4]/TMath::Cos((*fTrackParNew)(3,0))); // alpha
1205 (*fTrackParNew)(4,0) = 1/VGeant3[6]*TMath::Sign(Double_t(1.0),(*fTrackPar)(4,0)); // 1/Ptot
1208 //__________________________________________________________________________
1209 void AliMUONTrackK::SetTrackQuality(Int_t iChi2)
1211 // Computes "track quality" from Chi2 (if iChi2==0) or vice versa
1214 AliWarning(Form(" *** Too high Chi2: %f ", fChi2));
1217 if (iChi2 == 0) fChi2 = fNmbTrackHits + (500.-fChi2)/501;
1218 else fChi2 = 500 - (fChi2-fNmbTrackHits)*501;
1221 //__________________________________________________________________________
1222 Int_t AliMUONTrackK::Compare(const TObject* trackK) const
1224 // "Compare" function to sort with decreasing "track quality".
1225 // Returns +1 (0, -1) if quality of current track
1226 // is smaller than (equal to, larger than) quality of trackK
1228 if (fChi2 < ((AliMUONTrackK*)trackK)->fChi2) return(+1);
1229 else if (fChi2 == ((AliMUONTrackK*)trackK)->fChi2) return(0);
1233 //__________________________________________________________________________
1234 Bool_t AliMUONTrackK::KeepTrack(AliMUONTrackK* track0) const
1236 // Check whether or not to keep current track
1237 // (keep, if it has less than half of common hits with track0)
1238 Int_t hitsInCommon, nHits0, i, j, nTrackHits2;
1239 AliMUONHitForRec *hit0, *hit1;
1242 nHits0 = track0->fNmbTrackHits;
1243 nTrackHits2 = fNmbTrackHits/2;
1245 for (i=0; i<nHits0; i++) {
1246 // Check if hit belongs to several tracks
1247 hit0 = (AliMUONHitForRec*) (*track0->fTrackHits)[i];
1248 if (hit0->GetNTrackHits() == 1) continue;
1249 for (j=0; j<fNmbTrackHits; j++) {
1250 hit1 = (AliMUONHitForRec*) (*fTrackHits)[j];
1251 if (hit1->GetNTrackHits() == 1) continue;
1254 if (hitsInCommon >= nTrackHits2) return kFALSE;
1262 //__________________________________________________________________________
1263 void AliMUONTrackK::Kill(void)
1265 // Kill track candidate
1266 fgTrackReconstructor->GetRecTracksPtr()->Remove(this);
1269 //__________________________________________________________________________
1270 void AliMUONTrackK::FillMUONTrack(void)
1272 // Compute track parameters at hit positions (as for AliMUONTrack)
1274 // Set number of hits per track
1275 SetNTrackHits(fNmbTrackHits);
1279 // Set track parameters at vertex
1280 AliMUONTrackParam trackParam;
1281 SetTrackParam(&trackParam, fTrackPar, fPosition);
1282 SetTrackParamAtVertex(&trackParam);
1284 // Set track parameters at hits
1285 for (Int_t i = fNmbTrackHits-1; i>=0; i--) {
1286 if ((*fChi2Smooth)[i] < 0) {
1287 // Propagate through last chambers
1288 trackParam.ExtrapToZ(((AliMUONHitForRec*)((*fTrackHits)[i]))->GetZ());
1291 SetTrackParam(&trackParam, (TMatrixD*)fParSmooth->UncheckedAt(i), ((AliMUONHitForRec*)((*fTrackHits)[i]))->GetZ());
1293 AddTrackParamAtHit(&trackParam);
1294 // Fill array of HitForRec's
1295 AddHitForRecAtHit((AliMUONHitForRec*)fTrackHits->UncheckedAt(i));
1299 //__________________________________________________________________________
1300 void AliMUONTrackK::SetTrackParam(AliMUONTrackParam *trackParam, TMatrixD *par, Double_t z)
1302 // Fill AliMUONTrackParam object
1304 trackParam->SetBendingCoor((*par)(0,0));
1305 trackParam->SetNonBendingCoor((*par)(1,0));
1306 trackParam->SetBendingSlope(TMath::Tan((*par)(2,0)));
1307 trackParam->SetNonBendingSlope(TMath::Tan((*par)(3,0))/TMath::Cos((*par)(2,0)));
1308 trackParam->SetInverseBendingMomentum((*par)(4,0)/TMath::Cos((*par)(3,0)));
1309 trackParam->SetZ(z);
1312 //__________________________________________________________________________
1313 void AliMUONTrackK::Branson(void)
1315 // Propagates track to the vertex thru absorber using Branson correction
1316 // (makes use of the AliMUONTrackParam class)
1318 //AliMUONTrackParam *trackParam = new AliMUONTrackParam();
1319 AliMUONTrackParam trackParam = AliMUONTrackParam();
1321 trackParam->SetBendingCoor((*fTrackPar)(0,0));
1322 trackParam->SetNonBendingCoor((*fTrackPar)(1,0));
1323 trackParam->SetBendingSlope(TMath::Tan((*fTrackPar)(2,0)));
1324 trackParam->SetNonBendingSlope(TMath::Tan((*fTrackPar)(3,0))/TMath::Cos((*fTrackPar)(2,0)));
1325 trackParam->SetInverseBendingMomentum((*fTrackPar)(4,0)/TMath::Cos((*fTrackPar)(3,0)));
1326 trackParam->SetZ(fPosition);
1328 SetTrackParam(&trackParam, fTrackPar, fPosition);
1330 trackParam.ExtrapToVertex(Double_t(0.), Double_t(0.), Double_t(0.));
1331 //trackParam.ExtrapToVertex();
1333 (*fTrackPar)(0,0) = trackParam.GetBendingCoor();
1334 (*fTrackPar)(1,0) = trackParam.GetNonBendingCoor();
1335 (*fTrackPar)(2,0) = TMath::ATan(trackParam.GetBendingSlope());
1336 (*fTrackPar)(3,0) = TMath::ATan(TMath::Cos((*fTrackPar)(2,0))*trackParam.GetNonBendingSlope());
1337 (*fTrackPar)(4,0) = TMath::Cos((*fTrackPar)(3,0))*trackParam.GetInverseBendingMomentum();
1338 fPosition = trackParam.GetZ();
1339 //delete trackParam;
1340 if (fgDebug > 0) cout << 1/(*fTrackPar)(4,0) << " " << fPosition << " " << (*fTrackPar)(0,0) << endl;
1342 // Get covariance matrix
1343 *fCovariance = *fWeight;
1344 if (fCovariance->Determinant() != 0) {
1346 mnvertLocal(&((*fCovariance)(0,0)), fgkSize,fgkSize,fgkSize,ifail);
1348 AliWarning(" Determinant fCovariance=0:");
1352 //__________________________________________________________________________
1353 void AliMUONTrackK::GoToZ(Double_t zEnd)
1355 // Propagates track to given Z
1357 ParPropagation(zEnd);
1358 MSThin(1); // multiple scattering in the chamber
1359 WeightPropagation(zEnd, kFALSE);
1360 fPosition = fPositionNew;
1361 *fTrackPar = *fTrackParNew;
1364 //__________________________________________________________________________
1365 void AliMUONTrackK::GoToVertex(Int_t iflag)
1368 // Propagates track to the vertex
1369 // All material constants are taken from AliRoot
1371 static Double_t x01[5] = { 24.282, // C
1376 // inner part theta < 3 degrees
1377 static Double_t x02[5] = { 30413, // Air
1382 // z positions of the materials inside the absober outer part theta > 3 degres
1383 static Double_t zPos[10] = {-90, -105, -315, -443, -468};
1385 Double_t dZ, r0Norm, x0, deltaP, dChi2, pTotal, pOld;
1386 AliMUONHitForRec *hit;
1387 AliMUONRawCluster *clus;
1388 TClonesArray *rawclusters;
1390 // First step to the rear end of the absorber
1391 Double_t zRear = -503;
1393 Double_t tan3 = TMath::Tan(3./180*TMath::Pi());
1395 // Go through absorber
1396 pOld = 1/(*fTrackPar)(4,0);
1397 Double_t r0Rear = (*fTrackPar)(0,0)*(*fTrackPar)(0,0) +
1398 (*fTrackPar)(1,0)*(*fTrackPar)(1,0);
1399 r0Rear = TMath::Sqrt(r0Rear)/TMath::Abs(fPosition)/tan3;
1401 Double_t p0, cos25, cos60;
1402 if (!iflag) goto vertex;
1404 for (Int_t i=4; i>=0; i--) {
1405 ParPropagation(zPos[i]);
1406 WeightPropagation(zPos[i], kFALSE);
1407 dZ = TMath::Abs (fPositionNew-fPosition);
1408 if (r0Norm > 1) x0 = x01[i];
1410 MSLine(dZ,x0); // multiple scattering in the medium (linear approximation)
1411 fPosition = fPositionNew;
1412 *fTrackPar = *fTrackParNew;
1413 r0Norm = (*fTrackPar)(0,0)*(*fTrackPar)(0,0) +
1414 (*fTrackPar)(1,0)*(*fTrackPar)(1,0);
1415 r0Norm = TMath::Sqrt(r0Norm)/TMath::Abs(fPosition)/tan3;
1417 // Correct momentum for energy losses
1418 pTotal = 1/TMath::Abs((*fTrackPar)(4,0));
1420 cos25 = TMath::Cos(2.5/180*TMath::Pi());
1421 cos60 = TMath::Cos(6.0/180*TMath::Pi());
1422 for (Int_t j=0; j<1; j++) {
1426 deltaP = 2.164 + 0.145e-1*p0 - 0.417e-3*p0*p0;
1428 deltaP = 2.275 + 0.102e-2*p0 - 0.674e-6*p0*p0;
1432 deltaP = 2.581 + 0.188e-1*p0 - 0.398e-3*p0*p0;
1434 deltaP = 2.727 + 0.356e-2*p0 + 0.242e-5*p0*p0;
1442 deltaP = 2.737 + 0.0494*p0 - 0.001123*p0*p0;
1444 deltaP = 3.0643 + 0.01346*p0;
1450 deltaP = 2.1380 + 0.0351*p0 - 0.000853*p0*p0;
1452 deltaP = 2.407 + 0.00702*p0;
1461 deltaP = 2.439 + 0.806e-1*p0 - 0.500e-2*p0*p0 + 0.106e-3*p0*p0*p0;
1463 deltaP = 2.767 + 0.742e-2*p0 - 0.196e-4*p0*p0 + 0.403e-7*p0*p0*p0;
1470 deltaP = 2.209 + 0.800e-2*p0;
1472 deltaP = 2.285 + 0.141e-2*p0 - 0.446e-6*p0*p0;
1482 deltaP = 2.5938 + 0.0570 * p0 - 0.001151 * p0 * p0;
1484 deltaP = 3.0714 + 0.011767 * p0;
1489 deltaP = 2.1207 + 0.05478 * p0 - 0.00145079 * p0 * p0;
1491 deltaP = 2.6069 + 0.0051705 * p0;
1497 p0 = pTotal + deltaP/TMath::Abs(TMath::Cos((*fTrackPar)(2,0))/TMath::Cos((*fTrackPar)(3,0)));
1499 (*fTrackPar)(4,0) = 1/p0*TMath::Sign((Double_t)1.,(*fTrackPar)(4,0));
1503 ParPropagation((Double_t)0.);
1504 WeightPropagation((Double_t)0., kFALSE);
1505 fPosition = fPositionNew;
1506 //*fTrackPar = *fTrackParNew;
1507 // Add vertex as a hit
1508 TMatrixD pointWeight(fgkSize,fgkSize);
1509 TMatrixD point(fgkSize,1);
1510 TMatrixD trackParTmp = point;
1511 point(0,0) = 0; // vertex coordinate - should be taken somewhere
1512 point(1,0) = 0; // vertex coordinate - should be taken somewhere
1513 pointWeight(0,0) = 1/1.e-3/1.e-3; // 10 um error
1514 pointWeight(1,1) = 1/1.e-3/1.e-3; // 10 um error
1515 TryPoint(point,pointWeight,trackParTmp,dChi2);
1516 *fTrackPar = trackParTmp;
1517 *fWeight += pointWeight;
1518 fChi2 += dChi2; // Chi2
1519 if (fgDebug < 0) return; // no output
1521 cout << pOld << " " << 1/(*fTrackPar)(4,0) << " " << dChi2 << " " << fChi2 << " " << fNmbTrackHits << endl;
1522 for (Int_t i1=0; i1<fNmbTrackHits; i1++) {
1523 hit = (AliMUONHitForRec*) ((*fTrackHits)[i1]);
1524 printf ("%5d", hit->GetChamberNumber());
1528 for (Int_t i1=0; i1<fNmbTrackHits; i1++) {
1529 hit = (AliMUONHitForRec*) ((*fTrackHits)[i1]);
1530 //cout << ((AliMUONHitForRec*)((*fTrackHits)[i1]))->GetHitNumber() << " ";
1531 //cout << ((AliMUONHitForRec*)((*fTrackHits)[i1]))->GetZ() << " ";
1532 printf ("%5d", fgHitForRec->IndexOf(hit));
1536 if (fgTrackReconstructor->GetRecTrackRefHits()) {
1537 // from track ref. hits
1538 for (Int_t i1=0; i1<fNmbTrackHits; i1++) {
1539 hit = (AliMUONHitForRec*) ((*fTrackHits)[i1]);
1540 cout << hit->GetTTRTrack() + hit->GetTrackRefSignal()*10000 << " ";
1543 // from raw clusters
1544 for (Int_t i1=0; i1<fNmbTrackHits; i1++) {
1545 hit = (AliMUONHitForRec*) ((*fTrackHits)[i1]);
1546 if (hit->GetHitNumber() < 0) { // combined cluster / track finder
1547 Int_t index = -hit->GetHitNumber() / 100000;
1548 Int_t iPos = -hit->GetHitNumber() - index * 100000;
1549 clus = (AliMUONRawCluster*) fgCombi->DetElem(index-1)->RawClusters()->UncheckedAt(iPos);
1551 rawclusters = fgTrackReconstructor->GetMUONData()->RawClusters(hit->GetChamberNumber());
1552 clus = (AliMUONRawCluster*) rawclusters->UncheckedAt(hit->GetHitNumber());
1554 printf ("%5d", clus->GetTrack(1)%10000000);
1557 for (Int_t i1=0; i1<fNmbTrackHits; i1++) {
1558 hit = (AliMUONHitForRec*) ((*fTrackHits)[i1]);
1559 if (hit->GetHitNumber() < 0) { // combined cluster / track finder
1560 Int_t index = -hit->GetHitNumber() / 100000;
1561 Int_t iPos = -hit->GetHitNumber() - index * 100000;
1562 clus = (AliMUONRawCluster*) fgCombi->DetElem(index-1)->RawClusters()->UncheckedAt(iPos);
1564 rawclusters = fgTrackReconstructor->GetMUONData()->RawClusters(hit->GetChamberNumber());
1565 clus = (AliMUONRawCluster*) rawclusters->UncheckedAt(hit->GetHitNumber());
1567 if (clus->GetTrack(2) != -1) printf ("%5d", clus->GetTrack(2)%10000000);
1568 else printf ("%5s", " ");
1572 for (Int_t i1=0; i1<fNmbTrackHits; i1++) {
1573 //cout << ((AliMUONHitForRec*)((*fTrackHits)[i1]))->GetHitNumber() << " ";
1574 cout << ((AliMUONHitForRec*)((*fTrackHits)[i1]))->GetZ() << " ";
1575 //cout << fgHitForRec->IndexOf(((AliMUONHitForRec*)((*fTrackHits)[i1]))) << " ";
1578 for (Int_t i1=0; i1<fNmbTrackHits; i1++) printf("%8.4f", (*fChi2Smooth)[i1]);
1580 cout << "---------------------------------------------------" << endl;
1582 // Get covariance matrix
1583 /* Not needed - covariance matrix is not interesting to anybody
1584 *fCovariance = *fWeight;
1585 if (fCovariance->Determinant() != 0) {
1587 mnvertLocal(&((*fCovariance)(0,0)), fgkSize,fgkSize,fgkSize,ifail);
1589 AliWarning(" Determinant fCovariance=0:" );
1594 //__________________________________________________________________________
1595 void AliMUONTrackK::MSLine(Double_t dZ, Double_t x0)
1597 // Adds multiple scattering in a thick layer for linear propagation
1599 Double_t cosAlph = TMath::Cos((*fTrackPar)(2,0));
1600 Double_t tanAlph = TMath::Tan((*fTrackPar)(2,0));
1601 Double_t cosBeta = TMath::Cos((*fTrackPar)(3,0));
1603 sinBeta = TMath::Sin((*fTrackPar)(3,0));
1604 Double_t tanBeta = TMath::Tan((*fTrackPar)(3,0));
1605 Double_t momentum = 1/(*fTrackPar)(4,0);
1606 Double_t velo = 1; // relativistic velocity
1607 Double_t step = TMath::Abs(dZ/cosAlph/cosBeta); // step length
1609 // Projected scattering angle
1610 Double_t theta0 = 0.0136/velo/momentum/TMath::Sqrt(x0)*(1+0.038*TMath::Log(step/x0));
1611 Double_t theta02 = theta0*theta0;
1612 Double_t dl2 = step*step/2*theta02;
1613 Double_t dl3 = dl2*step*2/3;
1616 Double_t dYdT = 1/cosAlph;
1617 Double_t dYdB = 0; //(*fTrackPar)(2,0)*sinBeta/cosAlph;
1618 Double_t dXdT = tanAlph*tanBeta;
1619 //Double_t dXdB = (1+(*fTrackPar)(2,0)*tanAlph*sinBeta*sinBeta)/cosBeta;
1620 Double_t dXdB = 1/cosBeta;
1621 Double_t dAdT = 1/cosBeta;
1622 Double_t dAdB = 0; //(*fTrackPar)(2,0)*tanBeta;
1624 // Get covariance matrix
1625 *fCovariance = *fWeight;
1626 if (fCovariance->Determinant() != 0) {
1627 // fCovariance->Invert();
1629 mnvertLocal(&((*fCovariance)(0,0)), fgkSize,fgkSize,fgkSize,ifail);
1631 AliWarning(" Determinant fCovariance=0:" );
1634 (*fCovariance)(0,0) += dl3*(dYdT*dYdT+dYdB*dYdB); // <yy>
1635 (*fCovariance)(1,1) += dl3*(dXdT*dXdT+dXdB*dXdB); // <xx>
1636 (*fCovariance)(2,2) += theta02*step*(dAdT*dAdT+dAdB*dAdB); // <aa>
1637 (*fCovariance)(3,3) += theta02*step; // <bb>
1639 (*fCovariance)(0,1) += dl3*(dYdT*dXdT+dYdB*dXdB); // <yx>
1640 (*fCovariance)(1,0) = (*fCovariance)(0,1);
1642 (*fCovariance)(0,2) += dl2*(dYdT*dAdT+dYdB*dAdB); // <ya>
1643 (*fCovariance)(2,0) = (*fCovariance)(0,2);
1645 (*fCovariance)(0,3) += dl2*dYdB; // <yb>
1646 (*fCovariance)(3,0) = (*fCovariance)(0,3);
1648 (*fCovariance)(1,2) += dl2*(-dXdT*dAdT+dXdB*dAdB); // <xa>
1649 (*fCovariance)(2,1) = (*fCovariance)(1,2);
1651 (*fCovariance)(1,3) += dl2*dXdB; // <xb>
1652 (*fCovariance)(3,1) = (*fCovariance)(1,3);
1654 (*fCovariance)(2,3) += theta02*step*dAdB; // <ab>
1655 (*fCovariance)(3,2) = (*fCovariance)(2,3);
1657 // Get weight matrix
1658 *fWeight = *fCovariance;
1659 if (fWeight->Determinant() != 0) {
1661 mnvertLocal(&((*fWeight)(0,0)), fgkSize,fgkSize,fgkSize,ifail);
1663 AliWarning(" Determinant fWeight=0:");
1667 //__________________________________________________________________________
1668 Bool_t AliMUONTrackK::Recover(void)
1670 // Adds new failed track(s) which can be tried to be recovered
1672 TClonesArray *trackPtr;
1673 AliMUONTrackK *trackK;
1675 if (fgDebug > 0) cout << " ******** Enter Recover " << endl;
1676 trackPtr = fgTrackReconstructor->GetRecTracksPtr();
1678 // Remove hit with the highest chi2
1681 for (Int_t i=0; i<fNmbTrackHits; i++) {
1682 chi2 = fChi2Smooth ? (*fChi2Smooth)[i] : (*fChi2Array)[i];
1683 printf("%10.4f", chi2);
1686 for (Int_t i=0; i<fNmbTrackHits; i++) {
1687 printf("%10d", ((AliMUONHitForRec*)fTrackHits->UncheckedAt(i))->GetChamberNumber());
1691 Double_t chi2max = 0;
1693 for (Int_t i=0; i<fNmbTrackHits; i++) {
1694 chi2 = fChi2Smooth ? (*fChi2Smooth)[i] : (*fChi2Array)[i];
1695 if (chi2 < chi2max) continue;
1699 //if (chi2max < 10) return kFALSE; // !!!
1700 //if (chi2max < 25) imax = fNmbTrackHits - 1;
1701 if (chi2max < 15) imax = fNmbTrackHits - 1; // discard the last point
1702 // Check if the outlier is not from the seed segment
1703 AliMUONHitForRec *skipHit = (AliMUONHitForRec*) fTrackHits->UncheckedAt(imax);
1704 if (skipHit == fStartSegment->GetHitForRec1() || skipHit == fStartSegment->GetHitForRec2()) {
1705 //DropBranches(fStartSegment); // drop all tracks with the same seed segment
1706 return kFALSE; // to be changed probably
1709 // Make a copy of track hit collection
1710 TObjArray *hits = new TObjArray(*fTrackHits);
1714 // Hits after the found one will be removed
1715 if (GetStation0() == 3 && skipHit->GetChamberNumber() >= 7) {
1716 SortHits(1, fTrackHits); // unsort hits
1717 imax = fTrackHits->IndexOf(skipHit);
1719 Int_t nTrackHits = fNmbTrackHits;
1720 for (Int_t i=imax+1; i<nTrackHits; i++) {
1721 AliMUONHitForRec *hit = (AliMUONHitForRec*) fTrackHits->UncheckedAt(i);
1722 fTrackHits->Remove(hit);
1723 hit->SetNTrackHits(hit->GetNTrackHits()-1); // unmark hit
1727 // Check if the track candidate doesn't exist yet
1728 if (ExistDouble()) { delete hits; return kFALSE; }
1730 //DropBranches(imax0, hits); // drop branches downstream the discarded hit
1733 nRecTracks = fgTrackReconstructor->GetNRecTracks();
1734 skipHit = (AliMUONHitForRec*) ((*fTrackHits)[fNmbTrackHits-1]);
1735 // Remove all saved steps and smoother matrices after the skipped hit
1736 RemoveMatrices(skipHit->GetZ());
1738 //AZ(z->-z) if (skipHit->GetZ() > fStartSegment->GetHitForRec2()->GetZ() || !fNSteps) {
1739 if (TMath::Abs(skipHit->GetZ()) > TMath::Abs(fStartSegment->GetHitForRec2()->GetZ()) || !fNSteps) {
1740 // Propagation toward high Z or skipped hit next to segment -
1741 // start track from segment
1742 trackK = new ((*trackPtr)[nRecTracks]) AliMUONTrackK(fStartSegment);
1743 fgTrackReconstructor->SetNRecTracks(nRecTracks+1);
1744 trackK->fRecover = 1;
1745 trackK->fSkipHit = skipHit;
1746 trackK->fNmbTrackHits = fNmbTrackHits;
1747 delete trackK->fTrackHits; // not efficient ?
1748 trackK->fTrackHits = new TObjArray(*fTrackHits);
1749 if (fgDebug > 0) cout << nRecTracks << " " << trackK->fRecover << endl;
1753 trackK = new ((*trackPtr)[nRecTracks]) AliMUONTrackK(NULL, NULL);
1755 fgTrackReconstructor->SetNRecTracks(nRecTracks+1);
1756 //AZ(z->-z) trackK->fTrackDir = -1;
1757 trackK->fTrackDir = 1;
1758 trackK->fRecover = 1;
1759 trackK->fSkipHit = skipHit;
1760 Int_t iD = trackK->fParFilter->Last()->GetUniqueID();
1762 trackK->fParFilter->Last()->SetUniqueID(iD-1);
1763 CreateMatrix(trackK->fParFilter);
1765 trackK->fParFilter->Last()->SetUniqueID(iD);
1767 *((TMatrixD*)trackK->fParFilter->Last()) = *((TMatrixD*)fParExtrap->Last());
1768 *(trackK->fTrackPar) = *((TMatrixD*)trackK->fParFilter->Last());
1769 iD = trackK->fCovFilter->Last()->GetUniqueID();
1771 trackK->fCovFilter->Last()->SetUniqueID(iD-1);
1772 CreateMatrix(trackK->fCovFilter);
1774 trackK->fCovFilter->Last()->SetUniqueID(iD);
1776 *((TMatrixD*)trackK->fCovFilter->Last()) = *((TMatrixD*)fCovExtrap->Last());
1777 *(trackK->fWeight) = *((TMatrixD*)trackK->fCovFilter->Last());
1778 if (trackK->fWeight->Determinant() != 0) {
1780 mnvertLocal(&((*(trackK->fWeight))(0,0)), fgkSize,fgkSize,fgkSize,ifail);
1782 AliWarning(" Determinant fWeight=0:");
1784 trackK->fPosition = trackK->fPositionNew = (*fSteps)[fNSteps-1];
1786 for (Int_t i=0; i<fNmbTrackHits-1; i++) trackK->fChi2 += (*fChi2Array)[i];
1787 if (fgDebug > 0) cout << nRecTracks << " " << trackK->fRecover << endl;
1791 //__________________________________________________________________________
1792 void AliMUONTrackK::AddMatrices(AliMUONTrackK *trackK, Double_t dChi2, AliMUONHitForRec *hitAdd)
1794 // Adds matrices for the smoother and keep Chi2 for the point
1796 //trackK->fParFilter->Last()->Print();
1797 Int_t iD = trackK->fParFilter->Last()->GetUniqueID();
1799 trackK->fParFilter->Last()->SetUniqueID(iD-1);
1800 CreateMatrix(trackK->fParFilter);
1803 *((TMatrixD*)(trackK->fParFilter->Last())) = *(trackK->fTrackPar);
1804 trackK->fParFilter->Last()->SetUniqueID(iD);
1806 cout << " Add matrices" << " " << fPosition << " " << dChi2 << " " << fgHitForRec->IndexOf(hitAdd) << endl;
1807 //trackK->fTrackPar->Print();
1808 //trackK->fTrackParNew->Print();
1809 trackK->fParFilter->Last()->Print();
1810 cout << " Add matrices" << endl;
1813 *(trackK->fCovariance) = *(trackK->fWeight);
1814 if (trackK->fCovariance->Determinant() != 0) {
1816 mnvertLocal(&((*(trackK->fCovariance))(0,0)), fgkSize,fgkSize,fgkSize,ifail);
1818 AliWarning(" Determinant fCovariance=0:");
1820 iD = trackK->fCovFilter->Last()->GetUniqueID();
1822 trackK->fCovFilter->Last()->SetUniqueID(iD-1);
1823 CreateMatrix(trackK->fCovFilter);
1826 *((TMatrixD*)(trackK->fCovFilter->Last())) = *(trackK->fCovariance);
1827 trackK->fCovFilter->Last()->SetUniqueID(iD);
1829 // Save Chi2-increment for point
1830 Int_t indx = trackK->fTrackHits->IndexOf(hitAdd);
1831 if (indx < 0) indx = fNmbTrackHits;
1832 if (trackK->fChi2Array->fN <= indx) trackK->fChi2Array->Set(indx+10);
1833 trackK->fChi2Array->AddAt(dChi2,indx);
1836 //__________________________________________________________________________
1837 void AliMUONTrackK::CreateMatrix(TObjArray *objArray) const
1839 // Create new matrix and add it to TObjArray
1841 TMatrixD *matrix = (TMatrixD*) objArray->First();
1842 TMatrixD *tmp = new TMatrixD(*matrix);
1843 objArray->AddAtAndExpand(tmp,objArray->GetLast());
1844 //cout << " !!! " << tmp << " " << tmp->GetUniqueID() << " " << tmp->GetNoElements() << endl;
1847 //__________________________________________________________________________
1848 void AliMUONTrackK::RemoveMatrices(Double_t zEnd)
1850 // Remove matrices (and saved steps) in the smoother part with abs(z) < abs(zEnd)
1852 for (Int_t i=fNSteps-1; i>=0; i--) {
1853 if (fgDebug > 1) printf("%10.4f %10.4f \n", (*fSteps)[i], zEnd);
1854 if (TMath::Abs((*fSteps)[i]) > TMath::Abs(zEnd) - 0.01) break;
1855 RemoveMatrices(this);
1856 } // for (Int_t i=fNSteps-1;
1859 //__________________________________________________________________________
1860 void AliMUONTrackK::RemoveMatrices(AliMUONTrackK* trackK)
1862 // Remove last saved matrices and steps in the smoother part
1865 Int_t i = trackK->fNSteps;
1868 // Delete only matrices not shared by several tracks
1869 id = trackK->fParExtrap->Last()->GetUniqueID();
1871 trackK->fParExtrap->Last()->SetUniqueID(id-1);
1872 trackK->fParExtrap->RemoveAt(i);
1874 else ((TMatrixD*)(trackK->fParExtrap->RemoveAt(i)))->Delete();
1875 id = fParFilter->Last()->GetUniqueID();
1877 trackK->fParFilter->Last()->SetUniqueID(id-1);
1878 trackK->fParFilter->RemoveAt(i);
1880 else ((TMatrixD*)(trackK->fParFilter->RemoveAt(i)))->Delete();
1881 id = trackK->fCovExtrap->Last()->GetUniqueID();
1883 trackK->fCovExtrap->Last()->SetUniqueID(id-1);
1884 trackK->fCovExtrap->RemoveAt(i);
1886 else ((TMatrixD*)(trackK->fCovExtrap->RemoveAt(i)))->Delete();
1887 id = trackK->fCovFilter->Last()->GetUniqueID();
1889 trackK->fCovFilter->Last()->SetUniqueID(id-1);
1890 trackK->fCovFilter->RemoveAt(i);
1892 else ((TMatrixD*)(trackK->fCovFilter->RemoveAt(i)))->Delete();
1893 id = trackK->fJacob->Last()->GetUniqueID();
1895 trackK->fJacob->Last()->SetUniqueID(id-1);
1896 trackK->fJacob->RemoveAt(i);
1898 else ((TMatrixD*)(trackK->fJacob->RemoveAt(i)))->Delete();
1901 //__________________________________________________________________________
1902 Bool_t AliMUONTrackK::Smooth(void)
1905 Int_t ihit = fNmbTrackHits - 1;
1906 AliMUONHitForRec *hit = (AliMUONHitForRec*) (*fTrackHits)[ihit];
1907 fChi2Smooth = new TArrayD(fNmbTrackHits);
1908 fChi2Smooth->Reset(-1);
1910 fParSmooth = new TObjArray(15);
1911 fParSmooth->Clear();
1914 cout << " ******** Enter Smooth " << endl;
1915 cout << (*fSteps)[fNSteps-1] << " " << fPosition << " " << fPositionNew << endl;
1917 for (Int_t i=fNSteps-1; i>=0; i--) cout << (*fSteps)[i] << " ";
1919 for (Int_t i=fNSteps-1; i>=0; i--) {cout << i << " " << (*fSteps)[i]; ((TMatrixD*)fParFilter->UncheckedAt(i))->Print(); ((TMatrixD*)fParExtrap->UncheckedAt(i))->Print(); ((TMatrixD*)fJacob->UncheckedAt(i))->Print();}
1921 for (Int_t i=ihit; i>=0; i--) cout << ((AliMUONHitForRec*)(*fTrackHits)[i])->GetZ() << " ";
1925 // Find last point corresponding to the last hit
1926 Int_t iLast = fNSteps - 1;
1927 for ( ; iLast>=0; iLast--) {
1928 //AZ(z->-z) if ((*fSteps)[iLast] + 0.01 > ((AliMUONHitForRec*)(*fTrackHits)[fNmbTrackHits-1])->GetZ()) break;
1929 if (TMath::Abs((*fSteps)[iLast]) + 0.01 > TMath::Abs(((AliMUONHitForRec*)(*fTrackHits)[fNmbTrackHits-1])->GetZ())) break;
1932 TMatrixD parSmooth = *((TMatrixD*)(fParFilter->UncheckedAt(iLast))); // last filtered = first smoothed
1934 TMatrixD covSmooth = *((TMatrixD*)(fCovFilter->UncheckedAt(iLast))); // last filtered = first smoothed
1935 TMatrixD tmp=covSmooth, weight=covSmooth, gain = covSmooth;
1936 TMatrixD tmpPar = *fTrackPar;
1937 //parSmooth.Print(); ((TMatrixD*)(fParExtrap->Last()))->Print();
1940 Double_t chi2max = 0;
1941 for (Int_t i=iLast+1; i>0; i--) {
1942 if (i == iLast + 1) goto L33; // temporary fix
1944 // Smoother gain matrix
1945 weight = *((TMatrixD*)(fCovExtrap->UncheckedAt(i)));
1946 if (weight.Determinant() != 0) {
1948 mnvertLocal(&(weight(0,0)), fgkSize,fgkSize,fgkSize,ifail);
1950 AliWarning(" Determinant weight=0:");
1953 tmp = TMatrixD(*((TMatrixD*)(fJacob->UncheckedAt(i))),TMatrixD::kTransposeMult,weight);
1954 gain = TMatrixD(*((TMatrixD*)(fCovFilter->UncheckedAt(i-1))),TMatrixD::kMult,tmp);
1955 //cout << (*fSteps)[i-1] << " " << (*fSteps)[i] << endl; gain.Print();
1957 // Smoothed parameter vector
1958 //((TMatrixD*)(fParExtrap->UncheckedAt(i)))->Dump();
1959 parSmooth -= *((TMatrixD*)(fParExtrap->UncheckedAt(i)));
1960 tmpPar = *((TMatrixD*)(fParFilter->UncheckedAt(i-1)));
1961 tmpPar += TMatrixD(gain,TMatrixD::kMult,parSmooth);
1964 // Smoothed covariance
1965 covSmooth -= *((TMatrixD*)(fCovExtrap->UncheckedAt(i)));
1966 weight = TMatrixD(TMatrixD::kTransposed,gain);
1967 tmp = TMatrixD(covSmooth,TMatrixD::kMult,weight);
1968 covSmooth = *((TMatrixD*)(fCovFilter->UncheckedAt(i-1)));
1969 covSmooth += TMatrixD(gain,TMatrixD::kMult,tmp);
1971 // Check if there was a measurement at given z
1973 for ( ; ihit>=0; ihit--) {
1974 hit = (AliMUONHitForRec*) (*fTrackHits)[ihit];
1975 if (TMath::Abs(hit->GetZ()-(*fSteps)[i-1]) < 0.1) { found = kTRUE; break; }
1976 //AZ(z->-z) else if (ihit < fNmbTrackHits-1 && hit->GetZ() > (*fSteps)[i-1]) { ihit++; break; }
1977 else if (ihit < fNmbTrackHits-1 && TMath::Abs(hit->GetZ()) > TMath::Abs((*fSteps)[i-1])) { ihit++; break; }
1979 if (!found) continue; // no measurement - skip the rest
1980 else if (fgDebug > 1) cout << i << " " << ihit << " " << hit->GetZ() << endl;
1981 if (ihit == 0) continue; // the first hit - skip the rest
1984 // Smoothed residuals
1986 tmpPar(0,0) = hit->GetBendingCoor() - parSmooth(0,0); // bending coordinate
1987 tmpPar(1,0) = hit->GetNonBendingCoor() - parSmooth(1,0); // non-bending coordinate
1989 cout << hit->GetBendingCoor() << " " << parSmooth(0,0) << " " << tmpPar(0,0) << endl;
1990 cout << hit->GetNonBendingCoor() << " " << parSmooth(1,0) << " " << tmpPar(1,0) << endl;
1992 // Cov. matrix of smoothed residuals
1994 tmp(0,0) = hit->GetBendingReso2() - covSmooth(0,0);
1995 tmp(1,1) = hit->GetNonBendingReso2() - covSmooth(1,1);
1996 tmp(0,1) = tmp(1,0) = -covSmooth(0,1);
1997 tmp(2,2) = tmp(3,3) = tmp(4,4) = 1;
1999 // Calculate Chi2 of smoothed residuals
2000 if (tmp.Determinant() != 0) {
2002 mnvertLocal(&(tmp(0,0)), fgkSize,fgkSize,fgkSize,ifail);
2004 AliWarning(" Determinant tmp=0:");
2006 TMatrixD vector(tmp,TMatrixD::kMult,tmpPar);
2007 TMatrixD chi2(tmpPar,TMatrixD::kTransposeMult,vector);
2008 if (fgDebug > 1) chi2.Print();
2009 (*fChi2Smooth)[ihit] = chi2(0,0);
2010 if (chi2(0,0) > chi2max) chi2max = chi2(0,0);
2012 if (chi2(0,0) < 0) {
2014 AliError(Form(" *** chi2 < 0: %d %d ", i, iLast));
2016 // Save smoothed parameters
2017 TMatrixD *par = new TMatrixD(parSmooth);
2018 fParSmooth->AddAtAndExpand(par, ihit);
2020 } // for (Int_t i=iLast+1;
2022 //if (chi2max > 16) {
2023 //if (chi2max > 25) {
2024 //if (chi2max > 50) {
2025 //if (chi2max > 100) {
2026 if (chi2max > fgkChi2max) {
2027 //if (Recover()) DropBranches();
2035 //__________________________________________________________________________
2036 void AliMUONTrackK::Outlier()
2038 // Adds new track with removed hit having the highest chi2
2041 cout << " ******** Enter Outlier " << endl;
2042 for (Int_t i=0; i<fNmbTrackHits; i++) printf("%10.4f", (*fChi2Smooth)[i]);
2044 for (Int_t i=0; i<fNmbTrackHits; i++) {
2045 printf("%10d", ((AliMUONHitForRec*)fTrackHits->UncheckedAt(i))->GetChamberNumber());
2050 Double_t chi2max = 0;
2052 for (Int_t i=0; i<fNmbTrackHits; i++) {
2053 if ((*fChi2Smooth)[i] < chi2max) continue;
2054 chi2max = (*fChi2Smooth)[i];
2057 // Check if the outlier is not from the seed segment
2058 AliMUONHitForRec *hit = (AliMUONHitForRec*) fTrackHits->UncheckedAt(imax);
2059 if (hit == fStartSegment->GetHitForRec1() || hit == fStartSegment->GetHitForRec2()) return; // to be changed probably
2061 // Check for missing station
2064 if (((AliMUONHitForRec*)fTrackHits->UncheckedAt(1))->GetChamberNumber() < 8) ok--;
2065 } else if (imax == fNmbTrackHits-1) {
2066 if (((AliMUONHitForRec*)fTrackHits->UncheckedAt(fNmbTrackHits-2))->GetChamberNumber() > 1) ok--;
2068 else if (((AliMUONHitForRec*)fTrackHits->UncheckedAt(imax-1))->GetChamberNumber()/2 - ((AliMUONHitForRec*)fTrackHits->UncheckedAt(imax+1))->GetChamberNumber()/2 > 1) ok--;
2069 if (!ok) { Recover(); return; } // try to recover track
2070 //AZ if (!ok) { if (fgDebug >= 0) cout << imax << endl; DropBranches(imax, 0); return; }
2072 // Remove saved steps and smoother matrices after the outlier
2073 RemoveMatrices(hit->GetZ());
2075 // Check for possible double track candidates
2076 //if (ExistDouble(hit)) return;
2078 TClonesArray *trackPtr = fgTrackReconstructor->GetRecTracksPtr();
2079 Int_t nRecTracks = fgTrackReconstructor->GetNRecTracks();
2081 AliMUONTrackK *trackK = 0;
2082 if (!fNSteps || GetStation0() == 3 && hit->GetChamberNumber() > 7) {
2083 // start track from segment
2084 trackK = new ((*trackPtr)[nRecTracks]) AliMUONTrackK(fStartSegment);
2085 fgTrackReconstructor->SetNRecTracks(nRecTracks+1);
2086 trackK->fRecover = 2;
2087 trackK->fSkipHit = hit;
2088 trackK->fNmbTrackHits = fNmbTrackHits;
2090 hit = (AliMUONHitForRec*) trackK->fTrackHits->UncheckedAt(0);
2091 hit->SetNTrackHits(hit->GetNTrackHits()-1);
2092 hit = (AliMUONHitForRec*) trackK->fTrackHits->UncheckedAt(1);
2093 hit->SetNTrackHits(hit->GetNTrackHits()-1);
2094 delete trackK->fTrackHits; // not efficient ?
2095 trackK->fTrackHits = new TObjArray(*fTrackHits);
2096 for (Int_t i = 0; i < fNmbTrackHits; i++) {
2097 hit = (AliMUONHitForRec*) fTrackHits->UncheckedAt(i);
2098 hit->SetNTrackHits(hit->GetNTrackHits()+1);
2101 if (GetStation0() == 3) trackK->SortHits(1, trackK->fTrackHits);
2102 if (fgDebug > 0) cout << nRecTracks << " Outlier" << endl;
2105 trackK = new ((*trackPtr)[nRecTracks]) AliMUONTrackK(NULL, NULL);
2107 fgTrackReconstructor->SetNRecTracks(nRecTracks+1);
2108 trackK->fTrackDir = 1;
2109 trackK->fRecover = 2;
2110 trackK->fSkipHit = hit;
2111 Int_t iD = trackK->fParFilter->Last()->GetUniqueID();
2113 trackK->fParFilter->Last()->SetUniqueID(iD-1);
2114 CreateMatrix(trackK->fParFilter);
2116 trackK->fParFilter->Last()->SetUniqueID(iD);
2118 *((TMatrixD*)trackK->fParFilter->Last()) = *((TMatrixD*)fParExtrap->Last());
2119 *(trackK->fTrackPar) = *((TMatrixD*)trackK->fParFilter->Last());
2120 iD = trackK->fCovFilter->Last()->GetUniqueID();
2122 trackK->fCovFilter->Last()->SetUniqueID(iD-1);
2123 CreateMatrix(trackK->fCovFilter);
2125 trackK->fCovFilter->Last()->SetUniqueID(iD);
2127 *((TMatrixD*)trackK->fCovFilter->Last()) = *((TMatrixD*)fCovExtrap->Last());
2128 *(trackK->fWeight) = *((TMatrixD*)trackK->fCovFilter->Last());
2129 if (trackK->fWeight->Determinant() != 0) {
2131 mnvertLocal(&((*(trackK->fWeight))(0,0)), fgkSize,fgkSize,fgkSize,ifail);
2133 AliWarning(" Determinant fWeight=0:");
2135 trackK->fPosition = trackK->fPositionNew = (*fSteps)[fNSteps-1];
2137 for (Int_t i=0; i<fNmbTrackHits-1; i++) trackK->fChi2 += (*fChi2Array)[i];
2138 if (fgDebug > 0) cout << nRecTracks << " Outlier " << trackK->fChi2 << endl;
2141 //__________________________________________________________________________
2142 Double_t AliMUONTrackK::GetChi2PerPoint(Int_t iPoint) const
2144 // Return Chi2 at point
2145 return fChi2Smooth ? (*fChi2Smooth)[iPoint] : (*fChi2Array)[iPoint];
2149 //__________________________________________________________________________
2150 void AliMUONTrackK::Print(FILE *lun) const
2152 // Print out track information
2155 AliMUONHitForRec *hit = 0;
2156 if (fgTrackReconstructor->GetRecTrackRefHits()) {
2157 // from track ref. hits
2158 for (Int_t j=0; j<fNmbTrackHits; j++) {
2159 hit = (AliMUONHitForRec*) fTrackHits->UncheckedAt(j);
2160 if (hit->GetTTRTrack() > 1) { flag = 0; break; }
2162 for (Int_t j=0; j<fNmbTrackHits; j++) {
2163 printf("%10.4f", GetChi2PerPoint(j));
2164 if (GetChi2PerPoint(j) > -0.1) {
2165 hit = (AliMUONHitForRec*) fTrackHits->UncheckedAt(j);
2166 fprintf(lun,"%3d %3d %10.4f", gAlice->GetEvNumber(), hit->GetChamberNumber(), GetChi2PerPoint(j));
2167 fprintf(lun, "%3d %3d %3d \n", hit->GetTrackRefSignal(), hit->GetTTRTrack(), flag);
2172 // from raw clusters
2173 AliMUONRawCluster *clus = 0;
2174 TClonesArray *rawclusters = 0;
2175 for (Int_t i1=0; i1<fNmbTrackHits; i1++) {
2176 hit = (AliMUONHitForRec*) ((*fTrackHits)[i1]);
2177 rawclusters = fgTrackReconstructor->GetMUONData()->RawClusters(hit->GetChamberNumber());
2178 clus = (AliMUONRawCluster*) rawclusters->UncheckedAt(hit->GetHitNumber());
2179 if (TMath::Abs(clus->GetTrack(1)-1) < 2) {
2180 if (clus->GetTrack(2)) flag = 2;
2183 if (clus->GetTrack(2) && TMath::Abs(clus->GetTrack(2)-1) < 2) {
2190 Int_t sig[2]={1,1}, tid[2]={0};
2191 for (Int_t i1=0; i1<fNmbTrackHits; i1++) {
2192 if (GetChi2PerPoint(i1) < -0.1) continue;
2193 hit = (AliMUONHitForRec*) ((*fTrackHits)[i1]);
2194 rawclusters = fgTrackReconstructor->GetMUONData()->RawClusters(hit->GetChamberNumber());
2195 clus = (AliMUONRawCluster*) rawclusters->UncheckedAt(hit->GetHitNumber());
2196 for (Int_t j=0; j<2; j++) {
2197 tid[j] = clus->GetTrack(j+1) - 1;
2198 if (clus->GetTrack(j+1) < 0) { sig[j] = 0; tid[j] = 999; }
2200 fprintf(lun,"%3d %3d %10.4f", gAlice->GetEvNumber(), hit->GetChamberNumber(), GetChi2PerPoint(i1));
2201 if (!(clus->GetTrack(2))) fprintf(lun, "%3d %3d", sig[0], tid[0]); // simple cluster
2202 else { // track overlap
2203 fprintf(lun, "%3d %3d", TMath::Max(sig[0],sig[1]), TMath::Min(tid[0],tid[1]));
2204 //if (tid[0] < 2) flag *= 2;
2205 //else if (tid[1] < 2) flag *= 3;
2207 fprintf (lun, "%3d \n", flag);
2212 //__________________________________________________________________________
2213 void AliMUONTrackK::DropBranches(Int_t imax, TObjArray *hits)
2215 // Drop branches downstream of the skipped hit
2217 TClonesArray *trackPtr;
2218 AliMUONTrackK *trackK;
2220 trackPtr = fgTrackReconstructor->GetRecTracksPtr();
2221 nRecTracks = fgTrackReconstructor->GetNRecTracks();
2222 Int_t icand = trackPtr->IndexOf(this);
2223 if (!hits) hits = fTrackHits;
2225 // Check if the track candidate doesn't exist yet
2226 for (Int_t i=icand+1; i<nRecTracks; i++) {
2227 trackK = (AliMUONTrackK*) ((*trackPtr)[i]);
2228 if (trackK->fNmbTrackHits == 2 && trackK->GetRecover() == 0) continue;
2229 if (trackK->GetRecover() < 0) continue;
2231 if (trackK->fNmbTrackHits >= imax + 1) {
2232 for (Int_t j=0; j<=imax; j++) {
2233 //if (j != fNmbTrackHits-1 && (*trackK->fTrackHits)[j] != (*fTrackHits)[j]) break;
2234 if ((*trackK->fTrackHits)[j] != (*hits)[j]) break;
2236 if (hits != fTrackHits) {
2237 // Drop all branches downstream the hit (for Recover)
2238 trackK->SetRecover(-1);
2239 if (fgDebug >= 0 )cout << " Recover " << i << endl;
2242 // Check if the removal of the hit breaks the track
2245 if (((AliMUONHitForRec*)trackK->fTrackHits->UncheckedAt(1))->GetChamberNumber() < 8) ok--; }
2246 else if (imax == trackK->fNmbTrackHits-1) continue;
2247 // else if (imax == trackK->fNmbTrackHits-1) {
2248 //if (((AliMUONHitForRec*)trackK->fTrackHits->UncheckedAt(trackK->fNmbTrackHits-2))->GetChamberNumber() > 1) ok--;
2250 else if (((AliMUONHitForRec*)trackK->fTrackHits->UncheckedAt(imax-1))->GetChamberNumber()/2 - ((AliMUONHitForRec*)trackK->fTrackHits->UncheckedAt(imax+1))->GetChamberNumber()/2 > 1) ok--;
2251 if (!ok) trackK->SetRecover(-1);
2253 } // for (Int_t j=0;
2255 } // for (Int_t i=0;
2258 //__________________________________________________________________________
2259 void AliMUONTrackK::DropBranches(AliMUONSegment *segment)
2261 // Drop all candidates with the same seed segment
2263 TClonesArray *trackPtr;
2264 AliMUONTrackK *trackK;
2266 trackPtr = fgTrackReconstructor->GetRecTracksPtr();
2267 nRecTracks = fgTrackReconstructor->GetNRecTracks();
2268 Int_t icand = trackPtr->IndexOf(this);
2270 for (Int_t i=icand+1; i<nRecTracks; i++) {
2271 trackK = (AliMUONTrackK*) ((*trackPtr)[i]);
2272 if (trackK->fNmbTrackHits == 2 && trackK->GetRecover() == 0) continue;
2273 if (trackK->GetRecover() < 0) continue;
2274 if (trackK->fStartSegment == segment) trackK->SetRecover(-1);
2276 if (fgDebug >= 0) cout << " Drop segment " << endl;
2279 //__________________________________________________________________________
2280 AliMUONHitForRec* AliMUONTrackK::GetHitLastOk(void)
2282 // Return the hit where track stopped
2284 if (!fNSteps) return (AliMUONHitForRec*)((*fTrackHits)[1]);
2288 //__________________________________________________________________________
2289 Int_t AliMUONTrackK::GetStation0(void)
2291 // Return seed station number
2292 return fStartSegment->GetHitForRec1()->GetChamberNumber() / 2;
2295 //__________________________________________________________________________
2296 Bool_t AliMUONTrackK::ExistDouble(AliMUONHitForRec *hit)
2298 // Check if the track will make a double after outlier removal
2300 TClonesArray *trackPtr = fgTrackReconstructor->GetRecTracksPtr();
2301 Int_t nRecTracks = fgTrackReconstructor->GetNRecTracks();
2302 TObjArray *hitArray = new TObjArray(*fTrackHits);
2303 TObjArray *hitArray1 = new TObjArray(*hitArray);
2304 hitArray1->Remove(hit);
2305 hitArray1->Compress();
2307 Bool_t same = kFALSE;
2308 for (Int_t i=0; i<nRecTracks; i++) {
2309 AliMUONTrackK *trackK = (AliMUONTrackK*) ((*trackPtr)[i]);
2310 if (trackK->fNmbTrackHits == 2 && trackK->GetRecover() == 0) continue;
2311 if (trackK == this) continue;
2312 if (trackK->fNmbTrackHits == fNmbTrackHits || trackK->fNmbTrackHits == fNmbTrackHits-1) {
2313 TObjArray *hits = new TObjArray(*trackK->fTrackHits);
2315 if (trackK->fNmbTrackHits == fNmbTrackHits) {
2316 for (Int_t j=0; j<fNmbTrackHits; j++) {
2317 if (hits->UncheckedAt(j) != hitArray->UncheckedAt(j)) { same = kFALSE; break; }
2319 if (same) { delete hits; break; }
2320 if (trackK->fSkipHit) {
2321 TObjArray *hits1 = new TObjArray(*hits);
2322 if (hits1->Remove(trackK->fSkipHit) > 0) {
2325 for (Int_t j=0; j<fNmbTrackHits-1; j++) {
2326 if (hits1->UncheckedAt(j) != hitArray1->UncheckedAt(j)) { same = kFALSE; break; }
2328 if (same) { delete hits1; break; }
2333 // Check with removed outlier
2335 for (Int_t j=0; j<fNmbTrackHits-1; j++) {
2336 if (hits->UncheckedAt(j) != hitArray1->UncheckedAt(j)) { same = kFALSE; break; }
2338 if (same) { delete hits; break; }
2342 } // for (Int_t i=0; i<nRecTracks;
2343 delete hitArray; delete hitArray1;
2344 if (same && fgDebug >= 0) cout << " Same" << endl;
2348 //__________________________________________________________________________
2349 Bool_t AliMUONTrackK::ExistDouble(void)
2351 // Check if the track will make a double after recovery
2353 TClonesArray *trackPtr = fgTrackReconstructor->GetRecTracksPtr();
2354 Int_t nRecTracks = fgTrackReconstructor->GetNRecTracks();
2356 TObjArray *hitArray = new TObjArray(*fTrackHits);
2357 if (GetStation0() == 3) SortHits(0, hitArray); // sort
2358 //if (GetStation0() == 3) SortHits(1, hitArray); // unsort
2360 Bool_t same = kFALSE;
2361 for (Int_t i=0; i<nRecTracks; i++) {
2362 AliMUONTrackK *trackK = (AliMUONTrackK*) ((*trackPtr)[i]);
2363 if (trackK->fNmbTrackHits == 2 && trackK->GetRecover() == 0) continue;
2364 if (trackK == this) continue;
2365 //AZ if (trackK->GetRecover() < 0) continue; //
2366 if (trackK->fNmbTrackHits >= fNmbTrackHits) {
2367 TObjArray *hits = new TObjArray(*trackK->fTrackHits);
2368 if (trackK->GetStation0() == 3) SortHits(0, hits); // sort
2369 //if (trackK->GetStation0() == 3) SortHits(1, hits); // unsort
2370 for (Int_t j=0; j<fNmbTrackHits; j++) {
2371 //cout << fNmbTrackHits << " " << i << " " << j << " " << (*hitArray)[j] << " " << (*hits)[j] << " " << trackK->fSkipHit << endl;
2372 if (j != fNmbTrackHits-1 && (*hitArray)[j] != (*hits)[j]) break;
2373 if (j == fNmbTrackHits-1) {
2374 if (trackK->fSkipHit && TMath::Abs(((AliMUONHitForRec*)((*hitArray)[j]))->GetZ()-trackK->fSkipHit->GetZ()) < 0.5) same = kTRUE;
2375 //if (trackK->fNmbTrackHits > fNmbTrackHits &&
2376 //if (trackK->fSkipHit) cout << ((AliMUONHitForRec*)((*hitArray)[j]))->GetZ() << " " << trackK->fSkipHit->GetZ() << endl;
2378 } // for (Int_t j=0;
2382 } // for (Int_t i=0;