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 #include <stdlib.h> // for exit()
19 #include <Riostream.h>
20 #include <TClonesArray.h>
24 #include "AliMUONTrackK.h"
27 #include "AliMUONTrackReconstructor.h"
29 #include "AliMUONSegment.h"
30 #include "AliMUONHitForRec.h"
31 #include "AliMUONRawCluster.h"
32 #include "AliMUONTrackParam.h"
33 #include "AliMUONEventRecoCombi.h"
34 #include "AliMUONDetElement.h"
38 const Int_t AliMUONTrackK::fgkSize = 5;
39 const Int_t AliMUONTrackK::fgkNSigma = 12;
40 const Double_t AliMUONTrackK::fgkChi2max = 100;
41 const Int_t AliMUONTrackK::fgkTriesMax = 10000;
42 const Double_t AliMUONTrackK::fgkEpsilon = 0.002;
44 void mnvertLocal(Double_t* a, Int_t l, Int_t m, Int_t n, Int_t& ifail); // from AliMUONTrack
46 ClassImp(AliMUONTrackK) // Class implementation in ROOT context
48 Int_t AliMUONTrackK::fgDebug = -1; //-1;
49 Int_t AliMUONTrackK::fgNOfPoints = 0;
50 AliMUONTrackReconstructor* AliMUONTrackK::fgTrackReconstructor = NULL;
51 TClonesArray* AliMUONTrackK::fgHitForRec = NULL;
52 AliMUONEventRecoCombi *AliMUONTrackK::fgCombi = NULL;
53 //FILE *lun1 = fopen("window.dat","w");
55 //__________________________________________________________________________
56 AliMUONTrackK::AliMUONTrackK()
60 // Default constructor
62 fgTrackReconstructor = NULL; // pointer to event reconstructor
63 fgHitForRec = NULL; // pointer to points
64 fgNOfPoints = 0; // number of points
69 fTrackPar = fTrackParNew = NULL;
70 fCovariance = fWeight = NULL;
72 fParExtrap = fParFilter = fParSmooth = NULL;
73 fCovExtrap = fCovFilter = NULL;
75 fSteps = NULL; fNSteps = 0;
82 //__________________________________________________________________________
83 AliMUONTrackK::AliMUONTrackK(AliMUONTrackReconstructor *TrackReconstructor, TClonesArray *hitForRec)
88 if (!TrackReconstructor) return;
89 fgTrackReconstructor = TrackReconstructor; // pointer to event reconstructor
90 fgHitForRec = hitForRec; // pointer to points
91 fgNOfPoints = fgHitForRec->GetEntriesFast(); // number of points
93 if (fgTrackReconstructor->GetTrackMethod() == 3) fgCombi = AliMUONEventRecoCombi::Instance();
99 fTrackPar = fTrackParNew = NULL;
100 fCovariance = fWeight = NULL;
102 fParExtrap = fParFilter = fParSmooth = NULL;
103 fCovExtrap = fCovFilter = NULL;
105 fSteps = NULL; fNSteps = 0;
110 //__________________________________________________________________________
111 AliMUONTrackK::AliMUONTrackK(AliMUONSegment *segment)
112 : AliMUONTrack(segment, segment, fgTrackReconstructor)
114 // Constructor from a segment
116 AliMUONHitForRec *hit1, *hit2;
117 AliMUONRawCluster *clus;
118 TClonesArray *rawclusters;
120 fStartSegment = segment;
123 // Pointers to hits from the segment
124 hit1 = segment->GetHitForRec1();
125 hit2 = segment->GetHitForRec2();
126 hit1->SetNTrackHits(hit1->GetNTrackHits()+1); // mark hit as being on track
127 hit2->SetNTrackHits(hit2->GetNTrackHits()+1); // mark hit as being on track
128 // check sorting in Z
129 if (TMath::Abs(hit1->GetZ()) > TMath::Abs(hit2->GetZ())) {
131 hit2 = segment->GetHitForRec1();
133 // memory allocation for the TObjArray of pointers to reconstructed TrackHit's
134 fTrackHitsPtr = new TObjArray(13);
138 fTrackPar = new TMatrixD(fgkSize,1); // track parameters
139 fTrackParNew = new TMatrixD(fgkSize,1); // track parameters
140 fCovariance = new TMatrixD(fgkSize,fgkSize); // covariance matrix
141 fWeight = new TMatrixD(fgkSize,fgkSize); // weight matrix (inverse of covariance)
143 // Fill array of track parameters
144 if (hit1->GetChamberNumber() > 7) {
145 // last tracking station
146 (*fTrackPar)(0,0) = hit1->GetBendingCoor(); // y
147 (*fTrackPar)(1,0) = hit1->GetNonBendingCoor(); // x
148 fPosition = hit1->GetZ(); // z
149 fTrackHitsPtr->Add(hit2); // add hit 2
150 fTrackHitsPtr->Add(hit1); // add hit 1
151 //AZ(Z->-Z) fTrackDir = -1;
154 // last but one tracking station
155 (*fTrackPar)(0,0) = hit2->GetBendingCoor(); // y
156 (*fTrackPar)(1,0) = hit2->GetNonBendingCoor(); // x
157 fPosition = hit2->GetZ(); // z
158 fTrackHitsPtr->Add(hit1); // add hit 1
159 fTrackHitsPtr->Add(hit2); // add hit 2
160 //AZ(Z->-Z) fTrackDir = 1;
163 dZ = hit2->GetZ() - hit1->GetZ();
164 dY = hit2->GetBendingCoor() - hit1->GetBendingCoor();
165 dX = hit2->GetNonBendingCoor() - hit1->GetNonBendingCoor();
166 (*fTrackPar)(2,0) = TMath::ATan2(dY,dZ); // alpha
167 if ((*fTrackPar)(2,0) < 0.) (*fTrackPar)(2,0) += 2*TMath::Pi(); // from 0 to 2*pi
168 (*fTrackPar)(3,0) = TMath::ATan2(-dX,dZ/TMath::Cos((*fTrackPar)(2,0))); // beta
169 (*fTrackPar)(2,0) -= TMath::Pi();
170 (*fTrackPar)(4,0) = 1/fgTrackReconstructor->GetBendingMomentumFromImpactParam(segment->GetBendingImpact()); // 1/Pt
171 (*fTrackPar)(4,0) *= TMath::Cos((*fTrackPar)(3,0)); // 1/p
172 // Evaluate covariance (and weight) matrix
176 fParExtrap = new TObjArray(15);
177 fParFilter = new TObjArray(15);
178 fCovExtrap = new TObjArray(15);
179 fCovFilter = new TObjArray(15);
180 fJacob = new TObjArray(15);
181 fSteps = new TArrayD(15);
183 fChi2Array = new TArrayD(13);
187 if (fgDebug < 0 ) return;
188 cout << fgTrackReconstructor->GetNRecTracks()-1 << " " << fgTrackReconstructor->GetBendingMomentumFromImpactParam(segment->GetBendingImpact()) << " " << 1/(*fTrackPar)(4,0) << " ";
189 if (fgTrackReconstructor->GetRecTrackRefHits()) {
190 // from track ref. hits
191 cout << ((AliMUONHitForRec*)((*fTrackHitsPtr)[0]))->GetTTRTrack() << "<-->" << ((AliMUONHitForRec*)((*fTrackHitsPtr)[1]))->GetTTRTrack() << " @ " << fStartSegment->GetHitForRec1()->GetChamberNumber() << endl;
194 for (Int_t i=0; i<2; i++) {
195 hit1 = (AliMUONHitForRec*) ((*fTrackHitsPtr)[i]);
196 rawclusters = fgTrackReconstructor->GetMUONData()->RawClusters(hit1->GetChamberNumber());
197 clus = (AliMUONRawCluster*) rawclusters->UncheckedAt(hit1->GetHitNumber());
198 cout << clus->GetTrack(1);
199 if (clus->GetTrack(2) != -1) cout << " " << clus->GetTrack(2);
200 if (i == 0) cout << " <--> ";
202 cout << " @ " << fStartSegment->GetHitForRec1()->GetChamberNumber() << endl;
206 //__________________________________________________________________________
207 AliMUONTrackK::~AliMUONTrackK()
212 delete fTrackHitsPtr; // delete the TObjArray of pointers to TrackHit's
213 fTrackHitsPtr = NULL;
216 delete fTrackPar; delete fTrackParNew; delete fCovariance;
220 if (fSteps) delete fSteps;
221 if (fChi2Array) delete fChi2Array;
222 if (fChi2Smooth) delete fChi2Smooth;
223 if (fParSmooth) {fParSmooth->Delete(); delete fParSmooth; }
224 // Delete only matrices not shared by several tracks
225 if (!fParExtrap) return;
228 for (Int_t i=0; i<fNSteps; i++) {
229 //if (fParExtrap->UncheckedAt(i)->GetUniqueID() > 1)
230 // fParExtrap->UncheckedAt(i)->SetUniqueID(fParExtrap->RemoveAt(i)->GetUniqueID()-1);
231 id = fParExtrap->UncheckedAt(i)->GetUniqueID();
233 fParExtrap->UncheckedAt(i)->SetUniqueID(id-1);
234 fParExtrap->RemoveAt(i);
236 //if (fParFilter->UncheckedAt(i)->GetUniqueID() > 1)
237 // fParFilter->UncheckedAt(i)->SetUniqueID(fParFilter->RemoveAt(i)->GetUniqueID()-1);
238 id = fParFilter->UncheckedAt(i)->GetUniqueID();
240 fParFilter->UncheckedAt(i)->SetUniqueID(id-1);
241 fParFilter->RemoveAt(i);
243 //if (fCovExtrap->UncheckedAt(i)->GetUniqueID() > 1)
244 // fCovExtrap->UncheckedAt(i)->SetUniqueID(fCovExtrap->RemoveAt(i)->GetUniqueID()-1);
245 id = fCovExtrap->UncheckedAt(i)->GetUniqueID();
247 fCovExtrap->UncheckedAt(i)->SetUniqueID(id-1);
248 fCovExtrap->RemoveAt(i);
251 //if (fCovFilter->UncheckedAt(i)->GetUniqueID() > 1)
252 // fCovFilter->UncheckedAt(i)->SetUniqueID(fCovFilter->RemoveAt(i)->GetUniqueID()-1);
253 id = fCovFilter->UncheckedAt(i)->GetUniqueID();
255 fCovFilter->UncheckedAt(i)->SetUniqueID(id-1);
256 fCovFilter->RemoveAt(i);
258 //if (fJacob->UncheckedAt(i)->GetUniqueID() > 1)
259 // fJacob->UncheckedAt(i)->SetUniqueID(fJacob->RemoveAt(i)->GetUniqueID()-1);
260 id = fJacob->UncheckedAt(i)->GetUniqueID();
262 fJacob->UncheckedAt(i)->SetUniqueID(id-1);
267 for (Int_t i=0; i<fNSteps; i++) {
268 if (fParExtrap->UncheckedAt(i)) ((TMatrixD*)fParExtrap->UncheckedAt(i))->Delete();
269 if (fParFilter->UncheckedAt(i)) ((TMatrixD*)fParFilter->UncheckedAt(i))->Delete();
270 if (fCovExtrap->UncheckedAt(i)) ((TMatrixD*)fCovExtrap->UncheckedAt(i))->Delete();
271 cout << fCovFilter->UncheckedAt(i) << " " << (*fSteps)[i] << endl;
272 if (fCovFilter->UncheckedAt(i)) ((TMatrixD*)fCovFilter->UncheckedAt(i))->Delete();
273 if (fJacob->UncheckedAt(i)) ((TMatrixD*)fJacob->UncheckedAt(i))->Delete();
276 fParExtrap->Delete(); fParFilter->Delete();
277 fCovExtrap->Delete(); fCovFilter->Delete();
279 delete fParExtrap; delete fParFilter;
280 delete fCovExtrap; delete fCovFilter;
284 //__________________________________________________________________________
285 AliMUONTrackK::AliMUONTrackK (const AliMUONTrackK& source)
286 : AliMUONTrack(source)
288 // Protected copy constructor
289 AliFatal("Not implemented.");
292 //__________________________________________________________________________
293 AliMUONTrackK & AliMUONTrackK::operator=(const AliMUONTrackK& source)
295 // Assignment operator
297 if(&source == this) return *this;
299 // base class assignement
300 //AZ TObject::operator=(source);
301 AliMUONTrack::operator=(source);
303 fStartSegment = source.fStartSegment;
304 fNTrackHits = source.fNTrackHits;
305 fChi2 = source.fChi2;
306 fPosition = source.fPosition;
307 fPositionNew = source.fPositionNew;
308 fTrackDir = source.fTrackDir;
309 fBPFlag = source.fBPFlag;
310 fRecover = source.fRecover;
311 fSkipHit = source.fSkipHit;
314 fTrackHitsPtr = new TObjArray(*source.fTrackHitsPtr);
315 //source.fTrackHitsPtr->Dump();
316 //fTrackHitsPtr->Dump();
318 fTrackPar = new TMatrixD(*source.fTrackPar); // track parameters
319 fTrackParNew = new TMatrixD(*source.fTrackParNew); // track parameters
320 fCovariance = new TMatrixD(*source.fCovariance); // covariance matrix
321 fWeight = new TMatrixD(*source.fWeight); // weight matrix (inverse of covariance)
324 fParExtrap = new TObjArray(*source.fParExtrap);
325 fParFilter = new TObjArray(*source.fParFilter);
326 fCovExtrap = new TObjArray(*source.fCovExtrap);
327 fCovFilter = new TObjArray(*source.fCovFilter);
328 fJacob = new TObjArray(*source.fJacob);
329 fSteps = new TArrayD(*source.fSteps);
330 fNSteps = source.fNSteps;
332 if (source.fChi2Array) fChi2Array = new TArrayD(*source.fChi2Array);
336 for (Int_t i=0; i<fParExtrap->GetEntriesFast(); i++) {
337 fParExtrap->UncheckedAt(i)->SetUniqueID(fParExtrap->UncheckedAt(i)->GetUniqueID()+1);
338 fParFilter->UncheckedAt(i)->SetUniqueID(fParFilter->UncheckedAt(i)->GetUniqueID()+1);
339 fCovExtrap->UncheckedAt(i)->SetUniqueID(fCovExtrap->UncheckedAt(i)->GetUniqueID()+1);
340 fCovFilter->UncheckedAt(i)->SetUniqueID(fCovFilter->UncheckedAt(i)->GetUniqueID()+1);
341 fJacob->UncheckedAt(i)->SetUniqueID(fJacob->UncheckedAt(i)->GetUniqueID()+1);
346 //__________________________________________________________________________
347 void AliMUONTrackK::EvalCovariance(Double_t dZ)
349 // Evaluate covariance (and weight) matrix for track candidate
350 Double_t sigmaB, sigmaNonB, tanA, tanB, dAdY, rad, dBdX, dBdY;
353 sigmaB = fgTrackReconstructor->GetBendingResolution(); // bending resolution
354 sigmaNonB = fgTrackReconstructor->GetNonBendingResolution(); // non-bending resolution
356 (*fWeight)(0,0) = sigmaB*sigmaB; // <yy>
358 (*fWeight)(1,1) = sigmaNonB*sigmaNonB; // <xx>
360 tanA = TMath::Tan((*fTrackPar)(2,0));
361 dAdY = 1/(1+tanA*tanA)/dZ;
362 (*fWeight)(2,2) = dAdY*dAdY*(*fWeight)(0,0)*2; // <aa>
363 (*fWeight)(0,2) = dAdY*(*fWeight)(0,0); // <ya>
364 (*fWeight)(2,0) = (*fWeight)(0,2);
366 rad = dZ/TMath::Cos((*fTrackPar)(2,0));
367 tanB = TMath::Tan((*fTrackPar)(3,0));
368 dBdX = 1/(1+tanB*tanB)/rad;
370 (*fWeight)(3,3) = dBdX*dBdX*(*fWeight)(1,1)*2; // <bb>
371 (*fWeight)(1,3) = dBdX*(*fWeight)(1,1); // <xb>
372 (*fWeight)(3,1) = (*fWeight)(1,3);
374 (*fWeight)(4,4) = ((*fTrackPar)(4,0)*0.5)*((*fTrackPar)(4,0)*0.5); // error 50%
376 // check whether the Invert method returns flag if matrix cannot be inverted,
377 // and do not calculate the Determinant in that case !!!!
378 if (fWeight->Determinant() != 0) {
379 // fWeight->Invert();
381 mnvertLocal(&((*fWeight)(0,0)), fgkSize,fgkSize,fgkSize,ifail);
383 AliWarning(" Determinant fWeight=0:");
388 //__________________________________________________________________________
389 Bool_t AliMUONTrackK::KalmanFilter(Int_t ichamBeg, Int_t ichamEnd, Bool_t Back, Double_t zDipole1, Double_t zDipole2)
391 // Follows track through detector stations
392 Bool_t miss, success;
393 Int_t ichamb, iFB, iMin, iMax, dChamb, ichambOK;
394 Int_t ihit, firstIndx = -1, lastIndx = -1, currIndx = -1, iz0 = -1, iz = -1;
395 Double_t zEnd, dChi2;
396 AliMUONHitForRec *hitAdd, *firstHit = NULL, *lastHit = NULL, *hit;
397 AliMUONRawCluster *clus;
398 TClonesArray *rawclusters;
399 hit = 0; clus = 0; rawclusters = 0;
401 miss = success = kTRUE;
403 //iFB = (ichamEnd == ichamBeg) ? fTrackDir : TMath::Sign(1,ichamEnd-ichamBeg);
404 iFB = (ichamEnd == ichamBeg) ? -fTrackDir : TMath::Sign(1,ichamEnd-ichamBeg);
405 iMin = TMath::Min(ichamEnd,ichamBeg);
406 iMax = TMath::Max(ichamEnd,ichamBeg);
413 if (((AliMUONHitForRec*)fTrackHitsPtr->First())->GetChamberNumber() != ichamb) currIndx = 0;
414 } else if (fRecover) {
415 hit = GetHitLastOk();
416 currIndx = fTrackHitsPtr->IndexOf(hit);
417 if (currIndx < 0) hit = fStartSegment->GetHitForRec1(); // for station 3
419 ichamb = hit->GetChamberNumber();
420 if (hit == fSkipHit || fRecover == 2 && currIndx >= 0) {
421 // start from the last point or outlier
422 // remove the skipped hit
423 fTrackHitsPtr->Remove(fSkipHit); // remove hit
425 fSkipHit->SetNTrackHits(fSkipHit->GetNTrackHits()-1); // unmark hit
430 ichambOK = ((AliMUONHitForRec*)((*fTrackHitsPtr)[fNTrackHits-1]))->GetChamberNumber();
431 //if (ichambOK >= 8 && ((AliMUONHitForRec*)((*fTrackHitsPtr)[0]))->GetChamberNumber() == 6) ichambOK = 6;
432 if (fgTrackReconstructor->GetTrackMethod() == 3 &&
433 fSkipHit->GetHitNumber() < 0) {
434 iz0 = fgCombi->IZfromHit(fSkipHit);
437 else currIndx = fgHitForRec->IndexOf(fSkipHit);
440 fTrackHitsPtr->Compress();
442 } // if (hit == fSkipHit)
443 else if (currIndx < 0) currIndx = fTrackHitsPtr->IndexOf(hit);
444 } // else if (fRecover)
446 // Get indices of the 1'st and last hits on the track candidate
447 firstHit = (AliMUONHitForRec*) fTrackHitsPtr->First();
448 lastHit = (AliMUONHitForRec*) fTrackHitsPtr->Last();
449 if (fgTrackReconstructor->GetTrackMethod() == 3 &&
450 lastHit->GetHitNumber() < 0) iz0 = fgCombi->IZfromHit(lastHit);
452 firstIndx = fgHitForRec->IndexOf(firstHit);
453 lastIndx = fgHitForRec->IndexOf(lastHit);
454 currIndx = TMath::Abs (TMath::Max(firstIndx*iFB,lastIndx*iFB));
458 if (iz0 < 0) iz0 = iFB;
459 while (ichamb >= iMin && ichamb <= iMax) {
460 // Find the closest hit in Z, not belonging to the current plane
463 if (currIndx < fNTrackHits) {
464 hitAdd = (AliMUONHitForRec*) fTrackHitsPtr->UncheckedAt(currIndx);
465 zEnd = hitAdd->GetZ();
466 //AZ(z->-z) } else zEnd = -9999;
469 //AZ(Z->-Z) zEnd = -9999;
471 for (ihit=currIndx+iFB; ihit>=0 && ihit<fgNOfPoints; ihit+=iFB) {
472 hitAdd = (AliMUONHitForRec*) ((*fgHitForRec)[ihit]);
473 //if (TMath::Abs(hitAdd->GetZ()-fPosition) > 0.1) {
474 if (TMath::Abs(hitAdd->GetZ()-fPosition) > 0.5) {
475 zEnd = hitAdd->GetZ();
481 // Combined cluster / track finder
482 if (zEnd > 999 && iFB < 0 && fgTrackReconstructor->GetTrackMethod() == 3) {
484 AliMUONHitForRec hitTmp;
485 for (iz = iz0 - iFB; iz < fgCombi->Nz(); iz++) {
486 if (TMath::Abs(fgCombi->Z(iz)-fPosition) < 0.5) continue;
487 Int_t *pDEatZ = fgCombi->DEatZ(iz);
488 //cout << iz << " " << fgCombi->Z(iz) << endl;
489 zEnd = fgCombi->Z(iz);
491 AliMUONDetElement *detElem = fgCombi->DetElem(pDEatZ[0]);
493 hitAdd->SetChamberNumber(detElem->Chamber());
494 //hitAdd = (AliMUONHitForRec*) detElem->HitsForRec()->First();
499 if (zEnd>999 && ichamb==ichamEnd) endOfProp = 1; // end-of-propagation
501 // Check if there is a chamber without hits
502 if (zEnd>999 || TMath::Abs(hitAdd->GetChamberNumber()-ichamb) > 1) {
503 if (!Back && zEnd<999) currIndx -= iFB;
505 zEnd = AliMUONConstants::DefaultChamberZ(ichamb);
508 ichamb = hitAdd->GetChamberNumber();
512 if (ichamb<iMin || ichamb>iMax) break;
513 // Check for missing station
515 dChamb = TMath::Abs(ichamb-ichambOK);
516 //cout << dChamb << " " << ichambOK << " " << fgNOfPoints << endl;
517 Int_t dStatMiss = TMath::Abs (ichamb/2 - ichambOK/2);
518 if (zEnd > 999) dStatMiss++;
520 // missing station - abandon track
521 //cout << dChamb << " " << ichambOK << " " << fgNOfPoints << " " << 1/(*fTrackPar)(4,0) << endl;
523 for (Int_t i1=0; i1<fgNOfPoints; i1++) {
524 cout << " Hit #" << ((AliMUONHitForRec*)((*fgHitForRec)[i1]))->GetChamberNumber() << " ";
525 cout << ((AliMUONHitForRec*)((*fgHitForRec)[i1]))->GetBendingCoor() << " ";
526 cout << ((AliMUONHitForRec*)((*fgHitForRec)[i1]))->GetNonBendingCoor() << " ";
527 cout << ((AliMUONHitForRec*)((*fgHitForRec)[i1]))->GetZ() << " " << " ";
528 cout << ((AliMUONHitForRec*)((*fgHitForRec)[i1]))->GetTTRTrack() << endl;
531 cout << fNTrackHits << endl;
532 for (Int_t i1=0; i1<fNTrackHits; i1++) {
533 hit = (AliMUONHitForRec*) ((*fTrackHitsPtr)[i1]);
534 printf(" * %d %10.4f %10.4f %10.4f",
535 hit->GetChamberNumber(), hit->GetBendingCoor(),
536 hit->GetNonBendingCoor(), hit->GetZ());
537 if (fgTrackReconstructor->GetRecTrackRefHits()) {
538 // from track ref. hits
539 printf(" %3d %3d \n", hit->GetTrackRefSignal(), hit->GetTTRTrack());
542 rawclusters = fgTrackReconstructor->GetMUONData()->RawClusters(hit->GetChamberNumber());
543 clus = (AliMUONRawCluster*) rawclusters->UncheckedAt(hit->GetHitNumber());
544 printf("%3d", clus->GetTrack(1)-1);
545 if (clus->GetTrack(2) != 0) printf("%3d \n", clus->GetTrack(2)-1);
549 } // if (fgDebug >= 10)
550 if (fNTrackHits>2 && fRecover==0) Recover(); // try to recover track later
552 } // if (dStatMiss > 1)
554 if (endOfProp != 0) break;
556 // propagate to the found Z
558 // Check if track steps into dipole
559 //AZ(z->-z) if (fPosition>zDipole2 && zEnd<zDipole2) {
560 if (fPosition<zDipole2 && zEnd>zDipole2) {
561 //LinearPropagation(zDipole2-zBeg);
562 ParPropagation(zDipole2);
563 MSThin(1); // multiple scattering in the chamber
564 WeightPropagation(zDipole2, kTRUE); // propagate weight matrix
565 fPosition = fPositionNew;
566 *fTrackPar = *fTrackParNew;
567 //MagnetPropagation(zEnd);
568 ParPropagation(zEnd);
569 WeightPropagation(zEnd, kTRUE);
570 fPosition = fPositionNew;
572 // Check if track steps out of dipole
573 //AZ(z->-z) else if (fPosition>zDipole1 && zEnd<zDipole1) {
574 else if (fPosition<zDipole1 && zEnd>zDipole1) {
575 //MagnetPropagation(zDipole1-zBeg);
576 ParPropagation(zDipole1);
577 MSThin(1); // multiple scattering in the chamber
578 WeightPropagation(zDipole1, kTRUE);
579 fPosition = fPositionNew;
580 *fTrackPar = *fTrackParNew;
581 //LinearPropagation(zEnd-zDipole1);
582 ParPropagation(zEnd);
583 WeightPropagation(zEnd, kTRUE);
584 fPosition = fPositionNew;
586 ParPropagation(zEnd);
587 //MSThin(1); // multiple scattering in the chamber
588 if (TMath::Abs(zEnd-fPosition) > 5) MSThin(1); // multiple scattering in the chamber
589 WeightPropagation(zEnd, kTRUE);
590 fPosition = fPositionNew;
594 if (fRecover != 0 && hitAdd == fSkipHit && !miss) {
595 // recovered track - remove the hit
597 ichamb = fSkipHit->GetChamberNumber();
598 // remove the skipped hit
599 fTrackHitsPtr->Remove(fSkipHit);
601 fSkipHit->SetNTrackHits(fSkipHit->GetNTrackHits()-1); // unmark hit
604 ichambOK = ((AliMUONHitForRec*)((*fTrackHitsPtr)[fNTrackHits-1]))->GetChamberNumber();
605 //? if (fgTrackReconstructor->GetTrackMethod() != 3) currIndx = fgHitForRec->IndexOf(fSkipHit);
606 currIndx = fgHitForRec->IndexOf(fSkipHit);
610 // backward propagator
612 TMatrixD pointWeight(fgkSize,fgkSize);
613 TMatrixD point(fgkSize,1);
614 TMatrixD trackParTmp = point;
615 point(0,0) = hitAdd->GetBendingCoor();
616 point(1,0) = hitAdd->GetNonBendingCoor();
617 pointWeight(0,0) = 1/hitAdd->GetBendingReso2();
618 pointWeight(1,1) = 1/hitAdd->GetNonBendingReso2();
619 TryPoint(point,pointWeight,trackParTmp,dChi2);
620 *fTrackPar = trackParTmp;
621 *fWeight += pointWeight;
622 if (fTrackDir > 0) AddMatrices (this, dChi2, hitAdd);
623 fChi2 += dChi2; // Chi2
624 } else *fTrackPar = *fTrackParNew; // adjust end point to the last hit
625 if (ichamb==ichamEnd) break;
628 // forward propagator
629 if (miss || !FindPoint(ichamb, zEnd, currIndx, iFB, hitAdd, iz)) {
631 *fTrackPar = *fTrackParNew;
634 fTrackHitsPtr->Add(hitAdd); // add hit
636 hitAdd->SetNTrackHits(hitAdd->GetNTrackHits()+1); // mark hit as being on track
638 currIndx = fgHitForRec->IndexOf(hitAdd); // Check
642 if (fgDebug > 0) cout << fNTrackHits << " " << fChi2 << " " << 1/(*fTrackPar)(4,0) << " " << fPosition << endl;
643 if (1/TMath::Abs((*fTrackPar)(4,0)) < fgTrackReconstructor->GetMinBendingMomentum()) success = kFALSE; // p < p_min
647 //__________________________________________________________________________
648 void AliMUONTrackK::ParPropagation(Double_t zEnd)
650 // Propagation of track parameters to zEnd
652 Double_t dZ, step, distance, charge;
653 Double_t vGeant3[7], vGeant3New[7];
654 AliMUONTrackParam trackParam;
657 // First step using linear extrapolation
658 dZ = zEnd - fPosition;
659 fPositionNew = fPosition;
660 *fTrackParNew = *fTrackPar;
661 if (dZ == 0) return; //AZ ???
662 iFB = (Int_t)TMath::Sign(Double_t(1.0),dZ);
663 step = dZ/TMath::Cos((*fTrackPar)(2,0))/TMath::Cos((*fTrackPar)(3,0)); // linear estimate
664 //AZ(z->-z) charge = iFB*TMath::Sign(Double_t(1.0),(*fTrackPar)(4,0));
665 charge = -iFB*TMath::Sign(Double_t(1.0),(*fTrackPar)(4,0));
666 SetGeantParam(vGeant3,iFB);
667 //fTrackParNew->Print();
671 step = TMath::Abs(step);
672 // Propagate parameters
673 trackParam.ExtrapOneStepRungekutta(charge,step,vGeant3,vGeant3New);
674 //extrap_onestep_rungekutta(charge,step,vGeant3,vGeant3New);
675 distance = zEnd - vGeant3New[2];
676 step *= dZ/(vGeant3New[2]-fPositionNew);
678 } while (distance*iFB < 0 && TMath::Abs(distance) > fgkEpsilon);
680 GetFromGeantParam(vGeant3New,iFB);
681 //fTrackParNew->Print();
683 // Position adjustment (until within tolerance)
684 while (TMath::Abs(distance) > fgkEpsilon) {
685 dZ = zEnd - fPositionNew;
686 iFB = (Int_t)TMath::Sign(Double_t(1.0),dZ);
687 step = dZ/TMath::Cos((*fTrackParNew)(2,0))/TMath::Cos((*fTrackParNew)(3,0));
688 step = TMath::Abs(step);
689 SetGeantParam(vGeant3,iFB);
692 // Propagate parameters
693 trackParam.ExtrapOneStepRungekutta(charge,step,vGeant3,vGeant3New);
694 //extrap_onestep_rungekutta(charge,step,vGeant3,vGeant3New);
695 distance = zEnd - vGeant3New[2];
698 if (nTries > fgkTriesMax) {
699 cout << " ***** ParPropagation: too many tries " << nTries << endl;
700 AliFatal("Too many tries.");
702 } while (distance*iFB < 0);
704 GetFromGeantParam(vGeant3New,iFB);
706 //cout << nTries << endl;
707 //fTrackParNew->Print();
711 //__________________________________________________________________________
712 void AliMUONTrackK::WeightPropagation(Double_t zEnd, Bool_t smooth)
714 // Propagation of the weight matrix
715 // W = DtWD, where D is Jacobian
719 TMatrixD jacob(fgkSize,fgkSize);
722 // Save initial and propagated parameters
723 TMatrixD trackPar0 = *fTrackPar;
724 TMatrixD trackParNew0 = *fTrackParNew;
726 // Get covariance matrix
727 *fCovariance = *fWeight;
728 // check whether the Invert method returns flag if matrix cannot be inverted,
729 // and do not calculate the Determinant in that case !!!!
730 if (fCovariance->Determinant() != 0) {
732 mnvertLocal(&((*fCovariance)(0,0)), fgkSize,fgkSize,fgkSize,ifail);
733 //fCovariance->Print();
735 AliWarning(" Determinant fCovariance=0:");
738 // Loop over parameters to find change of the propagated vs initial ones
739 for (i=0; i<fgkSize; i++) {
740 dPar = TMath::Sqrt((*fCovariance)(i,i));
741 *fTrackPar = trackPar0;
742 if (i == 4) dPar *= TMath::Sign(1.,-trackPar0(4,0)); // 1/p
743 (*fTrackPar)(i,0) += dPar;
744 ParPropagation(zEnd);
745 for (j=0; j<fgkSize; j++) {
746 jacob(j,i) = ((*fTrackParNew)(j,0)-trackParNew0(j,0))/dPar;
750 //trackParNew0.Print();
751 //TMatrixD par1(jacob,TMatrixD::kMult,trackPar0); //
753 TMatrixD jacob0 = jacob;
754 if (jacob.Determinant() != 0) {
757 AliWarning(" Determinant jacob=0:");
759 TMatrixD weight1(*fWeight,TMatrixD::kMult,jacob); // WD
760 *fWeight = TMatrixD(jacob,TMatrixD::kTransposeMult,weight1); // DtWD
762 // Restore initial and propagated parameters
763 *fTrackPar = trackPar0;
764 *fTrackParNew = trackParNew0;
767 if (!smooth) return; // do not use smoother
768 if (fTrackDir < 0) return; // only for propagation towards int. point
769 TMatrixD *tmp = new TMatrixD(*fTrackParNew); // extrapolated parameters
770 fParExtrap->Add(tmp);
772 tmp = new TMatrixD(*fTrackParNew); // filtered parameters (if no measurement will be found)
773 fParFilter->Add(tmp);
775 *fCovariance = *fWeight;
776 if (fCovariance->Determinant() != 0) {
778 mnvertLocal(&((*fCovariance)(0,0)), fgkSize,fgkSize,fgkSize,ifail);
780 AliWarning(" Determinant fCovariance=0:");
782 tmp = new TMatrixD(*fCovariance); // extrapolated covariance
783 fCovExtrap->Add(tmp);
785 tmp = new TMatrixD(*fCovariance); // filtered covariance (if no measurement will be found)
786 fCovFilter->Add(tmp);
788 tmp = new TMatrixD(jacob0); // Jacobian
791 if (fSteps->fN <= fNSteps) fSteps->Set(fSteps->fN+10);
792 fSteps->AddAt(fPositionNew,fNSteps++);
793 if (fgDebug > 0) cout << " WeightPropagation " << fNSteps << " " << fPositionNew << endl;
797 //__________________________________________________________________________
798 Bool_t AliMUONTrackK::FindPoint(Int_t ichamb, Double_t zEnd, Int_t currIndx, Int_t iFB, AliMUONHitForRec *&hitAdd, Int_t iz)
800 // Picks up point within a window for the chamber No ichamb
801 // Split the track if there are more than 1 hit
802 Int_t ihit, nRecTracks;
803 Double_t windowB, windowNonB, dChi2Tmp=0, dChi2, y, x, savePosition=0;
804 TClonesArray *trackPtr;
805 AliMUONHitForRec *hit, *hitLoop;
806 AliMUONTrackK *trackK;
807 AliMUONDetElement *detElem = NULL;
811 if (fgTrackReconstructor->GetTrackMethod() == 3 && iz >= 0) {
812 // Combined cluster / track finder
813 // Check if extrapolated track passes thru det. elems. at iz
814 Int_t *pDEatZ = fgCombi->DEatZ(iz);
815 Int_t nDetElem = pDEatZ[-1];
816 //cout << fgCombi->Z(iz) << " " << nDetElem << endl;
817 for (Int_t i = 0; i < nDetElem; i++) {
818 detElem = fgCombi->DetElem(pDEatZ[i]);
819 if (detElem->Inside((*fTrackParNew)(1,0), (*fTrackParNew)(0,0), fPosition)) {
820 detElem->ClusterReco((*fTrackParNew)(1,0), (*fTrackParNew)(0,0));
821 hitAdd = (AliMUONHitForRec*) detElem->HitsForRec()->First();
826 if (!ok) return ok; // outside det. elem.
830 //sigmaB = fgTrackReconstructor->GetBendingResolution(); // bending resolution
831 //sigmaNonB = fgTrackReconstructor->GetNonBendingResolution(); // non-bending resolution
832 *fCovariance = *fWeight;
833 // check whether the Invert method returns flag if matrix cannot be inverted,
834 // and do not calculate the Determinant in that case !!!!
835 if (fCovariance->Determinant() != 0) {
837 mnvertLocal(&((*fCovariance)(0,0)), fgkSize,fgkSize,fgkSize,ifail);
839 AliWarning(" Determinant fCovariance=0:");
841 //windowB = fgkNSigma*TMath::Sqrt((*fCovariance)(0,0)+sigmaB*sigmaB);
842 //windowNonB = fgkNSigma*TMath::Sqrt((*fCovariance)(1,1)+sigmaNonB*sigmaNonB);
843 // Loop over all hits and take hits from the chamber
844 TMatrixD pointWeight(fgkSize,fgkSize);
845 TMatrixD saveWeight = pointWeight;
846 TMatrixD pointWeightTmp = pointWeight;
847 TMatrixD point(fgkSize,1);
848 TMatrixD trackPar = point;
849 TMatrixD trackParTmp = point;
850 Int_t nHitsOK = 0, ihitB = currIndx, ihitE = fgNOfPoints, iDhit = iFB;
852 zLast = ((AliMUONHitForRec*)fTrackHitsPtr->Last())->GetZ();
853 if (fgTrackReconstructor->GetTrackMethod() == 3 && detElem) {
855 ihitE = detElem->NHitsForRec();
860 for (ihit = ihitB; ihit >= 0 && ihit < ihitE; ihit+=iDhit) {
861 if (fgTrackReconstructor->GetTrackMethod() != 3 || !detElem)
862 hit = (AliMUONHitForRec*) ((*fgHitForRec)[ihit]);
863 else hit = (AliMUONHitForRec*) detElem->HitsForRec()->UncheckedAt(ihit);
864 if (hit->GetChamberNumber() == ichamb) {
865 //if (TMath::Abs(hit->GetZ()-zEnd) < 0.1) {
866 if (TMath::Abs(hit->GetZ()-zEnd) < 0.5) {
867 //if (TMath::Abs(hit->GetZ()-zEnd) > 0.1) {
868 if (TMath::Abs(hit->GetZ()-zEnd) > 0.05) {
869 // adjust position: for multiple hits in the chamber
870 // (mostly (only?) for GEANT hits)
871 cout << " ******* adjust " << zEnd << " " << hit->GetZ() << endl;
873 *fTrackPar = *fTrackParNew;
874 ParPropagation(zEnd);
875 WeightPropagation(zEnd, kTRUE);
876 fPosition = fPositionNew;
877 *fTrackPar = *fTrackParNew;
879 *fCovariance = *fWeight;
880 if (fCovariance->Determinant() != 0) {
882 mnvertLocal(&((*fCovariance)(0,0)), fgkSize,fgkSize,fgkSize,ifail);
884 AliWarning(" Determinant fCovariance=0:" );
887 y = hit->GetBendingCoor();
888 x = hit->GetNonBendingCoor();
889 if (hit->GetBendingReso2() < 0) {
890 // Combined cluster / track finder
891 hit->SetBendingReso2(fgTrackReconstructor->GetBendingResolution()*
892 fgTrackReconstructor->GetBendingResolution());
893 hit->SetNonBendingReso2(fgTrackReconstructor->GetNonBendingResolution()*
894 fgTrackReconstructor->GetNonBendingResolution());
896 windowB = fgkNSigma*TMath::Sqrt((*fCovariance)(0,0)+hit->GetBendingReso2());
897 windowNonB = fgkNSigma*TMath::Sqrt((*fCovariance)(1,1)+hit->GetNonBendingReso2());
899 // windowB = TMath::Min (windowB,5.);
900 if (fgkNSigma > 6) windowB = TMath::Min (windowB,5.);
902 if (TMath::Abs(hit->GetZ()-zLast) < 50) {
903 windowB = TMath::Min (windowB,0.5);
904 windowNonB = TMath::Min (windowNonB,3.);
905 } else if (TMath::Abs(hit->GetZ()-zLast) < 200) {
906 windowB = TMath::Min (windowB,1.5);
907 windowNonB = TMath::Min (windowNonB,3.);
908 } else if (TMath::Abs(hit->GetZ()-zLast) < 350) {
909 windowB = TMath::Min (windowB,4.);
910 windowNonB = TMath::Min (windowNonB,6.);
916 if (TMath::Abs(hit->GetZ()-zLast) < 50) {
917 windowB = 5*TMath::Sqrt((*fCovariance)(0,0)+hit->GetBendingReso2());
918 windowNonB = 5*TMath::Sqrt((*fCovariance)(1,1)+hit->GetNonBendingReso2());
920 windowB = fgkNSigma*TMath::Sqrt((*fCovariance)(0,0)+hit->GetBendingReso2());
921 windowNonB = fgkNSigma*TMath::Sqrt((*fCovariance)(1,1)+hit->GetNonBendingReso2());
925 //cout << TMath::Abs((*fTrackParNew)(0,0)-y) << " " << windowB << " " << TMath::Abs((*fTrackParNew)(1,0)-x) << " " << windowNonB << " " << zEnd << endl;
926 if (TMath::Abs((*fTrackParNew)(0,0)-y) <= windowB &&
927 TMath::Abs((*fTrackParNew)(1,0)-x) <= windowNonB) {
928 //if (TMath::Abs((*fTrackParNew)(0,0)-y) <= windowB &&
929 // TMath::Abs((*fTrackParNew)(1,0)-x) <= windowNonB &&
930 // hit->GetTrackRefSignal() == 1) { // just for test
931 // Vector of measurements and covariance matrix
932 //fprintf(lun1,"%3d %3d %10.4f %10.4f \n", gAlice->GetEvNumber(), ichamb, x, y);
936 pointWeight(0,0) = 1/hit->GetBendingReso2();
937 pointWeight(1,1) = 1/hit->GetNonBendingReso2();
938 TryPoint(point,pointWeight,trackPar,dChi2);
939 if (TMath::Abs(1./(trackPar)(4,0)) < fgTrackReconstructor->GetMinBendingMomentum()) continue; // p < p_min - next hit
940 // if (TMath::Sign(1.,(trackPar)(4,0)*(*fTrackPar)(4,0)) < 0) continue; // change of sign
943 //if (nHitsOK > -1) {
945 // Save current members
946 saveWeight = *fWeight;
947 savePosition = fPosition;
948 // temporary storage for the current track
950 trackParTmp = trackPar;
951 pointWeightTmp = pointWeight;
953 if (fgDebug > 0) cout << " Added point: " << x << " " << y << " " << dChi2 << endl;
955 // branching: create a new track
956 trackPtr = fgTrackReconstructor->GetRecTracksPtr();
957 nRecTracks = fgTrackReconstructor->GetNRecTracks();
958 trackK = new ((*trackPtr)[nRecTracks]) AliMUONTrackK(NULL, NULL);
960 fgTrackReconstructor->SetNRecTracks(nRecTracks+1);
961 if (fgDebug > 0) cout << " ******** New track: " << ichamb << " " << hit->GetTTRTrack() << " " << 1/(trackPar)(4,0) << " " << hit->GetBendingCoor() << " " << hit->GetNonBendingCoor() << " " << fNTrackHits << " " << nRecTracks << endl;
962 trackK->fRecover = 0;
963 *(trackK->fTrackPar) = trackPar;
964 *(trackK->fWeight) += pointWeight;
965 trackK->fChi2 += dChi2;
968 *(trackK->fCovariance) = *(trackK->fWeight);
969 if (trackK->fCovariance->Determinant() != 0) {
971 mnvertLocal(&((*(trackK->fCovariance))(0,0)), fgkSize,fgkSize,fgkSize,ifail);
973 cout << (*(trackK->fCovariance))(0,0) << " " << (*(trackK->fCovariance))(1,1) << " " << (*fCovariance)(0,0) << " " << (*fCovariance)(1,1) << endl;
975 // Add filtered matrices for the smoother
977 if (nHitsOK > 2) { // check for position adjustment
978 for (Int_t i=trackK->fNSteps-1; i>=0; i--) {
979 if (TMath::Abs(hit->GetZ()-(*trackK->fSteps)[i]) > 0.1) {
980 //if (TMath::Abs(hit->GetZ()-(trackK->fSteps)[i]) > 0.1) {
981 RemoveMatrices(trackK);
982 cout << " *** Position adjustment 1 " << hit->GetZ() << " "
983 << (*trackK->fSteps)[i] << endl;
984 AliFatal(" Position adjustment 1.");
989 AddMatrices (trackK, dChi2, hit);
991 // Mark hits as being on 2 tracks
992 for (Int_t i=0; i<fNTrackHits; i++) {
993 hitLoop = (AliMUONHitForRec*) ((*fTrackHitsPtr)[i]);
994 hitLoop->SetNTrackHits(hitLoop->GetNTrackHits()+1);
997 cout << hitLoop->GetChamberNumber() << " ";
998 cout << hitLoop->GetBendingCoor() << " ";
999 cout << hitLoop->GetNonBendingCoor() << " ";
1000 cout << hitLoop->GetZ() << " " << " ";
1001 cout << hitLoop->GetTrackRefSignal() << " " << " ";
1002 cout << hitLoop->GetTTRTrack() << endl;
1003 printf(" ** %d %10.4f %10.4f %10.4f %d %d \n",
1004 hitLoop->GetChamberNumber(), hitLoop->GetBendingCoor(),
1005 hitLoop->GetNonBendingCoor(), hitLoop->GetZ(),
1006 hitLoop->GetTrackRefSignal(), hitLoop->GetTTRTrack());
1010 trackK->fTrackHitsPtr->Add(hit); // add hit
1011 trackK->fNTrackHits ++;
1012 hit->SetNTrackHits(hit->GetNTrackHits()+1); // mark hit as being on track
1015 trackK->fTrackDir = 1;
1016 trackK->fBPFlag = kTRUE;
1021 } else break; // different chamber
1022 } // for (ihit=currIndx;
1025 *fTrackPar = trackParTmp;
1026 *fWeight = saveWeight;
1027 *fWeight += pointWeightTmp;
1028 fChi2 += dChi2Tmp; // Chi2
1029 fPosition = savePosition;
1030 // Add filtered matrices for the smoother
1031 if (fTrackDir > 0) {
1032 for (Int_t i=fNSteps-1; i>=0; i--) {
1033 if (TMath::Abs(fPosition-(*fSteps)[i]) > 0.1) {
1034 //if (TMath::Abs(fPosition-fSteps[i]) > 0.1) {
1035 RemoveMatrices(this);
1036 if (fgDebug > 0) cout << " *** Position adjustment 2 " << fPosition << " " << (*fSteps)[i] << endl;
1039 } // for (Int_t i=fNSteps-1;
1040 AddMatrices (this, dChi2Tmp, hitAdd);
1043 for (Int_t i=0; i<fNSteps; i++) cout << (*fSteps)[i] << " "; cout << endl;
1044 for (Int_t i=0; i<trackK->fNSteps; i++) cout << (*trackK->fSteps)[i] << " "; cout << endl;
1047 } // if (fTrackDir > 0)
1052 //__________________________________________________________________________
1053 void AliMUONTrackK::TryPoint(TMatrixD &point, const TMatrixD &pointWeight, TMatrixD &trackParTmp, Double_t &dChi2)
1055 // Adds a measurement point (modifies track parameters and computes
1058 // Solving linear system (W+U)p' = U(m-p) + (W+U)p
1059 TMatrixD wu = *fWeight;
1060 wu += pointWeight; // W+U
1061 trackParTmp = point;
1062 trackParTmp -= *fTrackParNew; // m-p
1063 TMatrixD right(pointWeight,TMatrixD::kMult,trackParTmp); // U(m-p)
1064 TMatrixD right1(wu,TMatrixD::kMult,*fTrackParNew); // (W+U)p
1065 right += right1; // U(m-p) + (W+U)p
1067 // check whether the Invert method returns flag if matrix cannot be inverted,
1068 // and do not calculate the Determinant in that case !!!!
1069 if (wu.Determinant() != 0) {
1071 mnvertLocal(&((wu)(0,0)), fgkSize,fgkSize,fgkSize,ifail);
1073 AliWarning(" Determinant wu=0:");
1075 trackParTmp = TMatrixD(wu,TMatrixD::kMult,right);
1077 right1 = trackParTmp;
1078 right1 -= point; // p'-m
1079 point = trackParTmp;
1080 point -= *fTrackParNew; // p'-p
1081 right = TMatrixD(*fWeight,TMatrixD::kMult,point); // W(p'-p)
1082 TMatrixD value(point,TMatrixD::kTransposeMult,right); // (p'-p)'W(p'-p)
1084 right = TMatrixD(pointWeight,TMatrixD::kMult,right1); // U(p'-m)
1085 value = TMatrixD(right1,TMatrixD::kTransposeMult,right); // (p'-m)'U(p'-m)
1086 dChi2 += value(0,0);
1090 //__________________________________________________________________________
1091 void AliMUONTrackK::MSThin(Int_t sign)
1093 // Adds multiple scattering in a thin layer (only angles are affected)
1094 Double_t cosAlph, cosBeta, momentum, velo, path, theta0;
1096 // check whether the Invert method returns flag if matrix cannot be inverted,
1097 // and do not calculate the Determinant in that case !!!!
1098 if (fWeight->Determinant() != 0) {
1100 mnvertLocal(&((*fWeight)(0,0)), fgkSize,fgkSize,fgkSize,ifail);
1102 AliWarning(" Determinant fWeight=0:");
1105 cosAlph = TMath::Cos((*fTrackParNew)(2,0));
1106 cosBeta = TMath::Cos((*fTrackParNew)(3,0));
1107 momentum = 1/(*fTrackParNew)(4,0); // particle momentum
1108 //velo = momentum/TMath::Sqrt(momentum*momentum+muonMass*muonMass); // velocity/c for muon hypothesis
1109 velo = 1; // relativistic
1110 path = TMath::Abs(fgTrackReconstructor->GetChamberThicknessInX0()/cosAlph/cosBeta); // path length
1111 theta0 = 0.0136/velo/momentum*TMath::Sqrt(path)*(1+0.038*TMath::Log(path)); // projected scattering angle
1113 (*fWeight)(2,2) += sign*theta0/cosBeta*theta0/cosBeta; // alpha
1114 (*fWeight)(3,3) += sign*theta0*theta0; // beta
1116 mnvertLocal(&((*fWeight)(0,0)), fgkSize,fgkSize,fgkSize,ifail);
1120 //__________________________________________________________________________
1121 void AliMUONTrackK::StartBack(void)
1123 // Starts backpropagator
1127 for (Int_t i=0; i<fgkSize; i++) {
1128 for (Int_t j=0; j<fgkSize; j++) {
1129 if (j==i) (*fWeight)(i,i) /= 100;
1130 //if (j==i) (*fWeight)(i,i) /= fNTrackHits*fNTrackHits;
1131 else (*fWeight)(j,i) = 0;
1134 // Sort hits on track in descending order in abs(z)
1135 SortHits(0, fTrackHitsPtr);
1138 //__________________________________________________________________________
1139 void AliMUONTrackK::SortHits(Int_t iflag, TObjArray *array)
1141 // Sort hits in Z if the seed segment in the last but one station
1142 // (if iflag==0 in descending order in abs(z), if !=0 - unsort)
1144 if (iflag && ((AliMUONHitForRec*)(array->UncheckedAt(0)))->GetChamberNumber() == 6) return;
1145 Double_t z = 0, zmax = TMath::Abs(((AliMUONHitForRec*)(array->UncheckedAt(0)))->GetZ());
1146 Int_t i = 1, entries = array->GetEntriesFast();
1147 for ( ; i<entries; i++) {
1149 if (((AliMUONHitForRec*)(array->UncheckedAt(i)))->GetChamberNumber() == 6) break;
1151 z = TMath::Abs(((AliMUONHitForRec*)(array->UncheckedAt(i)))->GetZ());
1152 if (z < zmax) break;
1154 if (fgDebug >= 10) cout << " " << zmax << " " << z << " " << i << endl;
1158 for (Int_t j=0; j<=(i-1)/2; j++) {
1159 TObject *hit = array->UncheckedAt(j);
1160 array->AddAt(array->UncheckedAt(i-j),j);
1161 array->AddAt(hit,i-j);
1163 if (fgDebug >= 10) {
1164 for (i=0; i<entries; i++)
1165 cout << ((AliMUONHitForRec*)(array->UncheckedAt(i)))->GetZ() << " ";
1166 cout << " - Sort" << endl;
1170 //__________________________________________________________________________
1171 void AliMUONTrackK::SetGeantParam(Double_t *VGeant3, Int_t iFB)
1173 // Set vector of Geant3 parameters pointed to by "VGeant3"
1174 // from track parameters
1176 VGeant3[0] = (*fTrackParNew)(1,0); // X
1177 VGeant3[1] = (*fTrackParNew)(0,0); // Y
1178 VGeant3[2] = fPositionNew; // Z
1179 VGeant3[3] = iFB*TMath::Sin((*fTrackParNew)(3,0)); // Px/Ptot
1180 VGeant3[4] = iFB*TMath::Cos((*fTrackParNew)(3,0))*TMath::Sin((*fTrackParNew)(2,0)); // Py/Ptot
1181 VGeant3[5] = iFB*TMath::Sqrt(1.0-VGeant3[3]*VGeant3[3]-VGeant3[4]*VGeant3[4]); // Pz/Ptot
1182 VGeant3[6] = 1/TMath::Abs((*fTrackParNew)(4,0)); // Ptot
1185 //__________________________________________________________________________
1186 void AliMUONTrackK::GetFromGeantParam(Double_t *VGeant3, Int_t iFB)
1188 // Get track parameters from vector of Geant3 parameters pointed
1191 fPositionNew = VGeant3[2]; // Z
1192 (*fTrackParNew)(0,0) = VGeant3[1]; // Y
1193 (*fTrackParNew)(1,0) = VGeant3[0]; // X
1194 (*fTrackParNew)(3,0) = TMath::ASin(iFB*VGeant3[3]); // beta
1195 (*fTrackParNew)(2,0) = TMath::ASin(iFB*VGeant3[4]/TMath::Cos((*fTrackParNew)(3,0))); // alpha
1196 (*fTrackParNew)(4,0) = 1/VGeant3[6]*TMath::Sign(Double_t(1.0),(*fTrackPar)(4,0)); // 1/Ptot
1199 //__________________________________________________________________________
1200 void AliMUONTrackK::SetTrackQuality(Int_t iChi2)
1202 // Computes "track quality" from Chi2 (if iChi2==0) or vice versa
1205 cout << " ***** Too high Chi2: " << fChi2 << endl;
1208 if (iChi2 == 0) fChi2 = fNTrackHits + (500.-fChi2)/501;
1209 else fChi2 = 500 - (fChi2-fNTrackHits)*501;
1212 //__________________________________________________________________________
1213 Int_t AliMUONTrackK::Compare(const TObject* trackK) const
1215 // "Compare" function to sort with decreasing "track quality".
1216 // Returns +1 (0, -1) if quality of current track
1217 // is smaller than (equal to, larger than) quality of trackK
1219 if (fChi2 < ((AliMUONTrackK*)trackK)->fChi2) return(+1);
1220 else if (fChi2 == ((AliMUONTrackK*)trackK)->fChi2) return(0);
1224 //__________________________________________________________________________
1225 Bool_t AliMUONTrackK::KeepTrack(AliMUONTrackK* track0) const
1227 // Check whether or not to keep current track
1228 // (keep, if it has less than half of common hits with track0)
1229 Int_t hitsInCommon, nHits0, i, j, nTrackHits2;
1230 AliMUONHitForRec *hit0, *hit1;
1233 nHits0 = track0->fNTrackHits;
1234 nTrackHits2 = fNTrackHits/2;
1236 for (i=0; i<nHits0; i++) {
1237 // Check if hit belongs to several tracks
1238 hit0 = (AliMUONHitForRec*) (*track0->fTrackHitsPtr)[i];
1239 if (hit0->GetNTrackHits() == 1) continue;
1240 for (j=0; j<fNTrackHits; j++) {
1241 hit1 = (AliMUONHitForRec*) (*fTrackHitsPtr)[j];
1242 if (hit1->GetNTrackHits() == 1) continue;
1245 if (hitsInCommon >= nTrackHits2) return kFALSE;
1253 //__________________________________________________________________________
1254 void AliMUONTrackK::Kill(void)
1256 // Kill track candidate
1258 AliMUONHitForRec *hit;
1260 if (fTrackHitsPtr) {
1261 // Remove track mark from hits
1262 for (i=0; i<fNTrackHits; i++) {
1263 hit = (AliMUONHitForRec*) (*fTrackHitsPtr)[i];
1264 hit->SetNTrackHits(hit->GetNTrackHits()-1);
1267 fgTrackReconstructor->GetRecTracksPtr()->Remove(this);
1270 //__________________________________________________________________________
1271 void AliMUONTrackK::FillMUONTrack(void)
1273 // Compute track parameters at hit positions (as for AliMUONTrack)
1275 // Set number of hits per track
1276 ((AliMUONTrack*)this)->SetNTrackHits(fNTrackHits);
1278 // Set track parameters at vertex
1279 AliMUONTrackParam trackParam;
1280 SetTrackParam(&trackParam, fTrackPar, fPosition);
1281 ((AliMUONTrack*)this)->SetTrackParamAtVertex(&trackParam);
1283 // Set track parameters at hits
1284 for (Int_t i = fNTrackHits-1; i>=0; i--) {
1285 if ((*fChi2Smooth)[i] < 0) {
1286 // Propagate through last chambers
1287 trackParam.ExtrapToZ(((AliMUONHitForRec*)((*fTrackHitsPtr)[i]))->GetZ());
1290 SetTrackParam(&trackParam, (TMatrixD*)fParSmooth->UncheckedAt(i), ((AliMUONHitForRec*)((*fTrackHitsPtr)[i]))->GetZ());
1292 ((AliMUONTrack*)this)->AddTrackParamAtHit(&trackParam);
1293 // Fill array of HitForRec's
1294 ((AliMUONTrack*)this)->AddHitForRecAtHit((AliMUONHitForRec*)fTrackHitsPtr->UncheckedAt(i));
1298 //__________________________________________________________________________
1299 void AliMUONTrackK::SetTrackParam(AliMUONTrackParam *trackParam, TMatrixD *par, Double_t z)
1301 // Fill AliMUONTrackParam object
1303 trackParam->SetBendingCoor((*par)(0,0));
1304 trackParam->SetNonBendingCoor((*par)(1,0));
1305 trackParam->SetBendingSlope(TMath::Tan((*par)(2,0)));
1306 trackParam->SetNonBendingSlope(TMath::Tan((*par)(3,0))/TMath::Cos((*par)(2,0)));
1307 trackParam->SetInverseBendingMomentum((*par)(4,0)/TMath::Cos((*par)(3,0)));
1308 trackParam->SetZ(z);
1311 //__________________________________________________________________________
1312 void AliMUONTrackK::Branson(void)
1314 // Propagates track to the vertex thru absorber using Branson correction
1315 // (makes use of the AliMUONTrackParam class)
1317 //AliMUONTrackParam *trackParam = new AliMUONTrackParam();
1318 AliMUONTrackParam trackParam = AliMUONTrackParam();
1320 trackParam->SetBendingCoor((*fTrackPar)(0,0));
1321 trackParam->SetNonBendingCoor((*fTrackPar)(1,0));
1322 trackParam->SetBendingSlope(TMath::Tan((*fTrackPar)(2,0)));
1323 trackParam->SetNonBendingSlope(TMath::Tan((*fTrackPar)(3,0))/TMath::Cos((*fTrackPar)(2,0)));
1324 trackParam->SetInverseBendingMomentum((*fTrackPar)(4,0)/TMath::Cos((*fTrackPar)(3,0)));
1325 trackParam->SetZ(fPosition);
1327 SetTrackParam(&trackParam, fTrackPar, fPosition);
1329 trackParam.ExtrapToVertex(Double_t(0.), Double_t(0.), Double_t(0.));
1330 //trackParam.ExtrapToVertex();
1332 (*fTrackPar)(0,0) = trackParam.GetBendingCoor();
1333 (*fTrackPar)(1,0) = trackParam.GetNonBendingCoor();
1334 (*fTrackPar)(2,0) = TMath::ATan(trackParam.GetBendingSlope());
1335 (*fTrackPar)(3,0) = TMath::ATan(TMath::Cos((*fTrackPar)(2,0))*trackParam.GetNonBendingSlope());
1336 (*fTrackPar)(4,0) = TMath::Cos((*fTrackPar)(3,0))*trackParam.GetInverseBendingMomentum();
1337 fPosition = trackParam.GetZ();
1338 //delete trackParam;
1339 cout << 1/(*fTrackPar)(4,0) << " " << fPosition << " " << (*fTrackPar)(0,0) << endl;
1341 // Get covariance matrix
1342 *fCovariance = *fWeight;
1343 if (fCovariance->Determinant() != 0) {
1345 mnvertLocal(&((*fCovariance)(0,0)), fgkSize,fgkSize,fgkSize,ifail);
1347 AliWarning(" Determinant fCovariance=0:");
1351 //__________________________________________________________________________
1352 void AliMUONTrackK::GoToZ(Double_t zEnd)
1354 // Propagates track to given Z
1356 ParPropagation(zEnd);
1357 MSThin(1); // multiple scattering in the chamber
1358 WeightPropagation(zEnd, kFALSE);
1359 fPosition = fPositionNew;
1360 *fTrackPar = *fTrackParNew;
1363 //__________________________________________________________________________
1364 void AliMUONTrackK::GoToVertex(Int_t iflag)
1367 // Propagates track to the vertex
1368 // All material constants are taken from AliRoot
1370 static Double_t x01[5] = { 24.282, // C
1375 // inner part theta < 3 degrees
1376 static Double_t x02[5] = { 30413, // Air
1381 // z positions of the materials inside the absober outer part theta > 3 degres
1382 static Double_t zPos[10] = {-90, -105, -315, -443, -468};
1384 Double_t dZ, r0Norm, x0, deltaP, dChi2, pTotal, pOld;
1385 AliMUONHitForRec *hit;
1386 AliMUONRawCluster *clus;
1387 TClonesArray *rawclusters;
1389 // First step to the rear end of the absorber
1390 //AZ(z->-z) Double_t zRear = 503;
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;
1488 deltaP = 2.1207 + 0.05478 * p0 - 0.00145079 * p0 * p0;
1490 deltaP = 2.6069 + 0.0051705 * p0;
1496 p0 = pTotal + deltaP/TMath::Abs(TMath::Cos((*fTrackPar)(2,0))/TMath::Cos((*fTrackPar)(3,0)));
1498 (*fTrackPar)(4,0) = 1/p0*TMath::Sign((Double_t)1.,(*fTrackPar)(4,0));
1502 ParPropagation((Double_t)0.);
1503 WeightPropagation((Double_t)0., kFALSE);
1504 fPosition = fPositionNew;
1505 //*fTrackPar = *fTrackParNew;
1506 // Add vertex as a hit
1507 TMatrixD pointWeight(fgkSize,fgkSize);
1508 TMatrixD point(fgkSize,1);
1509 TMatrixD trackParTmp = point;
1510 point(0,0) = 0; // vertex coordinate - should be taken somewhere
1511 point(1,0) = 0; // vertex coordinate - should be taken somewhere
1512 pointWeight(0,0) = 1/1.e-3/1.e-3; // 10 um error
1513 pointWeight(1,1) = 1/1.e-3/1.e-3; // 10 um error
1514 TryPoint(point,pointWeight,trackParTmp,dChi2);
1515 *fTrackPar = trackParTmp;
1516 *fWeight += pointWeight;
1517 fChi2 += dChi2; // Chi2
1518 if (fgDebug < 0) return; // no output
1520 cout << pOld << " " << 1/(*fTrackPar)(4,0) << " " << dChi2 << " " << fChi2 << " " << fNTrackHits << endl;
1521 for (Int_t i1=0; i1<fNTrackHits; i1++) {
1522 hit = (AliMUONHitForRec*) ((*fTrackHitsPtr)[i1]);
1523 printf ("%4d", hit->GetChamberNumber());
1527 for (Int_t i1=0; i1<fNTrackHits; i1++) {
1528 hit = (AliMUONHitForRec*) ((*fTrackHitsPtr)[i1]);
1529 //cout << ((AliMUONHitForRec*)((*fTrackHitsPtr)[i1]))->GetHitNumber() << " ";
1530 //cout << ((AliMUONHitForRec*)((*fTrackHitsPtr)[i1]))->GetZ() << " ";
1531 printf ("%4d", fgHitForRec->IndexOf(hit));
1535 if (fgTrackReconstructor->GetRecTrackRefHits()) {
1536 // from track ref. hits
1537 for (Int_t i1=0; i1<fNTrackHits; i1++) {
1538 hit = (AliMUONHitForRec*) ((*fTrackHitsPtr)[i1]);
1539 cout << hit->GetTTRTrack() + hit->GetTrackRefSignal()*10000 << " ";
1542 // from raw clusters
1543 for (Int_t i1=0; i1<fNTrackHits; i1++) {
1544 hit = (AliMUONHitForRec*) ((*fTrackHitsPtr)[i1]);
1545 if (hit->GetHitNumber() < 0) { // combined cluster / track finder
1546 Int_t index = -hit->GetHitNumber() / 100000;
1547 Int_t iPos = -hit->GetHitNumber() - index * 100000;
1548 clus = (AliMUONRawCluster*) fgCombi->DetElem(index-1)->RawClusters()->UncheckedAt(iPos);
1550 rawclusters = fgTrackReconstructor->GetMUONData()->RawClusters(hit->GetChamberNumber());
1551 clus = (AliMUONRawCluster*) rawclusters->UncheckedAt(hit->GetHitNumber());
1553 printf ("%4d", clus->GetTrack(1));
1556 for (Int_t i1=0; i1<fNTrackHits; i1++) {
1557 hit = (AliMUONHitForRec*) ((*fTrackHitsPtr)[i1]);
1558 if (hit->GetHitNumber() < 0) { // combined cluster / track finder
1559 Int_t index = -hit->GetHitNumber() / 100000;
1560 Int_t iPos = -hit->GetHitNumber() - index * 100000;
1561 clus = (AliMUONRawCluster*) fgCombi->DetElem(index-1)->RawClusters()->UncheckedAt(iPos);
1563 rawclusters = fgTrackReconstructor->GetMUONData()->RawClusters(hit->GetChamberNumber());
1564 clus = (AliMUONRawCluster*) rawclusters->UncheckedAt(hit->GetHitNumber());
1566 if (clus->GetTrack(2) != -1) printf ("%4d", clus->GetTrack(2));
1567 else printf ("%4s", " ");
1571 for (Int_t i1=0; i1<fNTrackHits; i1++) {
1572 //cout << ((AliMUONHitForRec*)((*fTrackHitsPtr)[i1]))->GetHitNumber() << " ";
1573 cout << ((AliMUONHitForRec*)((*fTrackHitsPtr)[i1]))->GetZ() << " ";
1574 //cout << fgHitForRec->IndexOf(((AliMUONHitForRec*)((*fTrackHitsPtr)[i1]))) << " ";
1577 for (Int_t i1=0; i1<fNTrackHits; i1++) printf("%8.4f", (*fChi2Smooth)[i1]);
1579 cout << "---------------------------------------------------" << endl;
1581 // Get covariance matrix
1582 /* Not needed - covariance matrix is not interesting to anybody
1583 *fCovariance = *fWeight;
1584 if (fCovariance->Determinant() != 0) {
1586 mnvertLocal(&((*fCovariance)(0,0)), fgkSize,fgkSize,fgkSize,ifail);
1588 AliWarning(" Determinant fCovariance=0:" );
1593 //__________________________________________________________________________
1594 void AliMUONTrackK::MSLine(Double_t dZ, Double_t x0)
1596 // Adds multiple scattering in a thick layer for linear propagation
1598 Double_t cosAlph = TMath::Cos((*fTrackPar)(2,0));
1599 Double_t tanAlph = TMath::Tan((*fTrackPar)(2,0));
1600 Double_t cosBeta = TMath::Cos((*fTrackPar)(3,0));
1602 sinBeta = TMath::Sin((*fTrackPar)(3,0));
1603 Double_t tanBeta = TMath::Tan((*fTrackPar)(3,0));
1604 Double_t momentum = 1/(*fTrackPar)(4,0);
1605 Double_t velo = 1; // relativistic velocity
1606 Double_t step = TMath::Abs(dZ/cosAlph/cosBeta); // step length
1608 // Projected scattering angle
1609 Double_t theta0 = 0.0136/velo/momentum/TMath::Sqrt(x0)*(1+0.038*TMath::Log(step/x0));
1610 Double_t theta02 = theta0*theta0;
1611 Double_t dl2 = step*step/2*theta02;
1612 Double_t dl3 = dl2*step*2/3;
1615 Double_t dYdT = 1/cosAlph;
1616 Double_t dYdB = 0; //(*fTrackPar)(2,0)*sinBeta/cosAlph;
1617 Double_t dXdT = tanAlph*tanBeta;
1618 //Double_t dXdB = (1+(*fTrackPar)(2,0)*tanAlph*sinBeta*sinBeta)/cosBeta;
1619 Double_t dXdB = 1/cosBeta;
1620 Double_t dAdT = 1/cosBeta;
1621 Double_t dAdB = 0; //(*fTrackPar)(2,0)*tanBeta;
1623 // Get covariance matrix
1624 *fCovariance = *fWeight;
1625 if (fCovariance->Determinant() != 0) {
1626 // fCovariance->Invert();
1628 mnvertLocal(&((*fCovariance)(0,0)), fgkSize,fgkSize,fgkSize,ifail);
1630 AliWarning(" Determinant fCovariance=0:" );
1633 (*fCovariance)(0,0) += dl3*(dYdT*dYdT+dYdB*dYdB); // <yy>
1634 (*fCovariance)(1,1) += dl3*(dXdT*dXdT+dXdB*dXdB); // <xx>
1635 (*fCovariance)(2,2) += theta02*step*(dAdT*dAdT+dAdB*dAdB); // <aa>
1636 (*fCovariance)(3,3) += theta02*step; // <bb>
1638 (*fCovariance)(0,1) += dl3*(dYdT*dXdT+dYdB*dXdB); // <yx>
1639 (*fCovariance)(1,0) = (*fCovariance)(0,1);
1641 (*fCovariance)(0,2) += dl2*(dYdT*dAdT+dYdB*dAdB); // <ya>
1642 (*fCovariance)(2,0) = (*fCovariance)(0,2);
1644 (*fCovariance)(0,3) += dl2*dYdB; // <yb>
1645 (*fCovariance)(3,0) = (*fCovariance)(0,3);
1647 (*fCovariance)(1,2) += dl2*(-dXdT*dAdT+dXdB*dAdB); // <xa>
1648 (*fCovariance)(2,1) = (*fCovariance)(1,2);
1650 (*fCovariance)(1,3) += dl2*dXdB; // <xb>
1651 (*fCovariance)(3,1) = (*fCovariance)(1,3);
1653 (*fCovariance)(2,3) += theta02*step*dAdB; // <ab>
1654 (*fCovariance)(3,2) = (*fCovariance)(2,3);
1656 // Get weight matrix
1657 *fWeight = *fCovariance;
1658 if (fWeight->Determinant() != 0) {
1660 mnvertLocal(&((*fWeight)(0,0)), fgkSize,fgkSize,fgkSize,ifail);
1662 AliWarning(" Determinant fWeight=0:");
1666 //__________________________________________________________________________
1667 Bool_t AliMUONTrackK::Recover(void)
1669 // Adds new failed track(s) which can be tried to be recovered
1671 TClonesArray *trackPtr;
1672 AliMUONTrackK *trackK;
1674 if (fgDebug > 0) cout << " ******** Enter Recover " << endl;
1675 trackPtr = fgTrackReconstructor->GetRecTracksPtr();
1677 // Remove hit with the highest chi2
1680 for (Int_t i=0; i<fNTrackHits; i++) {
1681 chi2 = fChi2Smooth ? (*fChi2Smooth)[i] : (*fChi2Array)[i];
1682 printf("%10.4f", chi2);
1685 for (Int_t i=0; i<fNTrackHits; i++) {
1686 printf("%10d", ((AliMUONHitForRec*)fTrackHitsPtr->UncheckedAt(i))->GetChamberNumber());
1690 Double_t chi2max = 0;
1692 for (Int_t i=0; i<fNTrackHits; i++) {
1693 chi2 = fChi2Smooth ? (*fChi2Smooth)[i] : (*fChi2Array)[i];
1694 if (chi2 < chi2max) continue;
1698 //if (chi2max < 10) return kFALSE; // !!!
1699 //if (chi2max < 25) imax = fNTrackHits - 1;
1700 if (chi2max < 15) imax = fNTrackHits - 1; // discard the last point
1701 // Check if the outlier is not from the seed segment
1702 AliMUONHitForRec *skipHit = (AliMUONHitForRec*) fTrackHitsPtr->UncheckedAt(imax);
1703 if (skipHit == fStartSegment->GetHitForRec1() || skipHit == fStartSegment->GetHitForRec2()) {
1704 //DropBranches(fStartSegment); // drop all tracks with the same seed segment
1705 return kFALSE; // to be changed probably
1708 // Make a copy of track hit collection
1709 TObjArray *hits = new TObjArray(*fTrackHitsPtr);
1713 // Hits after the found one will be removed
1714 if (GetStation0() == 3 && skipHit->GetChamberNumber() >= 7) {
1715 SortHits(1, fTrackHitsPtr); // unsort hits
1716 imax = fTrackHitsPtr->IndexOf(skipHit);
1718 Int_t nTrackHits = fNTrackHits;
1719 for (Int_t i=imax+1; i<nTrackHits; i++) {
1720 AliMUONHitForRec *hit = (AliMUONHitForRec*) fTrackHitsPtr->UncheckedAt(i);
1721 fTrackHitsPtr->Remove(hit);
1722 hit->SetNTrackHits(hit->GetNTrackHits()-1); // unmark hit
1726 // Check if the track candidate doesn't exist yet
1727 if (ExistDouble()) { delete hits; return kFALSE; }
1729 //DropBranches(imax0, hits); // drop branches downstream the discarded hit
1732 nRecTracks = fgTrackReconstructor->GetNRecTracks();
1733 skipHit = (AliMUONHitForRec*) ((*fTrackHitsPtr)[fNTrackHits-1]);
1734 // Remove all saved steps and smoother matrices after the skipped hit
1735 RemoveMatrices(skipHit->GetZ());
1737 //AZ(z->-z) if (skipHit->GetZ() > fStartSegment->GetHitForRec2()->GetZ() || !fNSteps) {
1738 if (TMath::Abs(skipHit->GetZ()) > TMath::Abs(fStartSegment->GetHitForRec2()->GetZ()) || !fNSteps) {
1739 // Propagation toward high Z or skipped hit next to segment -
1740 // start track from segment
1741 trackK = new ((*trackPtr)[nRecTracks]) AliMUONTrackK(fStartSegment);
1742 fgTrackReconstructor->SetNRecTracks(nRecTracks+1);
1743 trackK->fRecover = 1;
1744 trackK->fSkipHit = skipHit;
1745 trackK->fNTrackHits = fNTrackHits;
1746 delete trackK->fTrackHitsPtr; // not efficient ?
1747 trackK->fTrackHitsPtr = new TObjArray(*fTrackHitsPtr);
1748 if (fgDebug > 0) cout << nRecTracks << " " << trackK->fRecover << endl;
1752 trackK = new ((*trackPtr)[nRecTracks]) AliMUONTrackK(NULL, NULL);
1754 fgTrackReconstructor->SetNRecTracks(nRecTracks+1);
1755 //AZ(z->-z) trackK->fTrackDir = -1;
1756 trackK->fTrackDir = 1;
1757 trackK->fRecover = 1;
1758 trackK->fSkipHit = skipHit;
1759 Int_t iD = trackK->fParFilter->Last()->GetUniqueID();
1761 trackK->fParFilter->Last()->SetUniqueID(iD-1);
1762 CreateMatrix(trackK->fParFilter);
1764 trackK->fParFilter->Last()->SetUniqueID(iD);
1766 *((TMatrixD*)trackK->fParFilter->Last()) = *((TMatrixD*)fParExtrap->Last());
1767 *(trackK->fTrackPar) = *((TMatrixD*)trackK->fParFilter->Last());
1768 iD = trackK->fCovFilter->Last()->GetUniqueID();
1770 trackK->fCovFilter->Last()->SetUniqueID(iD-1);
1771 CreateMatrix(trackK->fCovFilter);
1773 trackK->fCovFilter->Last()->SetUniqueID(iD);
1775 *((TMatrixD*)trackK->fCovFilter->Last()) = *((TMatrixD*)fCovExtrap->Last());
1776 *(trackK->fWeight) = *((TMatrixD*)trackK->fCovFilter->Last());
1777 if (trackK->fWeight->Determinant() != 0) {
1779 mnvertLocal(&((*(trackK->fWeight))(0,0)), fgkSize,fgkSize,fgkSize,ifail);
1781 AliWarning(" Determinant fWeight=0:");
1783 trackK->fPosition = trackK->fPositionNew = (*fSteps)[fNSteps-1];
1785 for (Int_t i=0; i<fNTrackHits-1; i++) trackK->fChi2 += (*fChi2Array)[i];
1786 if (fgDebug > 0) cout << nRecTracks << " " << trackK->fRecover << endl;
1790 //__________________________________________________________________________
1791 void AliMUONTrackK::AddMatrices(AliMUONTrackK *trackK, Double_t dChi2, AliMUONHitForRec *hitAdd)
1793 // Adds matrices for the smoother and keep Chi2 for the point
1795 //trackK->fParFilter->Last()->Print();
1796 Int_t iD = trackK->fParFilter->Last()->GetUniqueID();
1798 trackK->fParFilter->Last()->SetUniqueID(iD-1);
1799 CreateMatrix(trackK->fParFilter);
1802 *((TMatrixD*)(trackK->fParFilter->Last())) = *(trackK->fTrackPar);
1803 trackK->fParFilter->Last()->SetUniqueID(iD);
1805 cout << " Add matrices" << " " << fPosition << " " << dChi2 << " " << fgHitForRec->IndexOf(hitAdd) << endl;
1806 //trackK->fTrackPar->Print();
1807 //trackK->fTrackParNew->Print();
1808 trackK->fParFilter->Last()->Print();
1809 cout << " Add matrices" << endl;
1812 *(trackK->fCovariance) = *(trackK->fWeight);
1813 if (trackK->fCovariance->Determinant() != 0) {
1815 mnvertLocal(&((*(trackK->fCovariance))(0,0)), fgkSize,fgkSize,fgkSize,ifail);
1817 AliWarning(" Determinant fCovariance=0:");
1819 iD = trackK->fCovFilter->Last()->GetUniqueID();
1821 trackK->fCovFilter->Last()->SetUniqueID(iD-1);
1822 CreateMatrix(trackK->fCovFilter);
1825 *((TMatrixD*)(trackK->fCovFilter->Last())) = *(trackK->fCovariance);
1826 trackK->fCovFilter->Last()->SetUniqueID(iD);
1828 // Save Chi2-increment for point
1829 Int_t indx = trackK->fTrackHitsPtr->IndexOf(hitAdd);
1830 if (indx < 0) indx = fNTrackHits;
1831 if (trackK->fChi2Array->fN <= indx) trackK->fChi2Array->Set(indx+10);
1832 trackK->fChi2Array->AddAt(dChi2,indx);
1835 //__________________________________________________________________________
1836 void AliMUONTrackK::CreateMatrix(TObjArray *objArray)
1838 // Create new matrix and add it to TObjArray
1840 TMatrixD *matrix = (TMatrixD*) objArray->First();
1841 TMatrixD *tmp = new TMatrixD(*matrix);
1842 objArray->AddAtAndExpand(tmp,objArray->GetLast());
1843 //cout << " !!! " << tmp << " " << tmp->GetUniqueID() << " " << tmp->GetNoElements() << endl;
1846 //__________________________________________________________________________
1847 void AliMUONTrackK::RemoveMatrices(Double_t zEnd)
1849 // Remove matrices (and saved steps) in the smoother part with abs(z) < abs(zEnd)
1851 for (Int_t i=fNSteps-1; i>=0; i--) {
1852 if (fgDebug > 1) printf("%10.4f %10.4f \n", (*fSteps)[i], zEnd);
1853 if (TMath::Abs((*fSteps)[i]) > TMath::Abs(zEnd) - 0.01) break;
1854 RemoveMatrices(this);
1855 } // for (Int_t i=fNSteps-1;
1858 //__________________________________________________________________________
1859 void AliMUONTrackK::RemoveMatrices(AliMUONTrackK* trackK)
1861 // Remove last saved matrices and steps in the smoother part
1864 Int_t i = trackK->fNSteps;
1867 // Delete only matrices not shared by several tracks
1868 id = trackK->fParExtrap->Last()->GetUniqueID();
1870 trackK->fParExtrap->Last()->SetUniqueID(id-1);
1871 trackK->fParExtrap->RemoveAt(i);
1873 else ((TMatrixD*)(trackK->fParExtrap->RemoveAt(i)))->Delete();
1874 id = fParFilter->Last()->GetUniqueID();
1876 trackK->fParFilter->Last()->SetUniqueID(id-1);
1877 trackK->fParFilter->RemoveAt(i);
1879 else ((TMatrixD*)(trackK->fParFilter->RemoveAt(i)))->Delete();
1880 id = trackK->fCovExtrap->Last()->GetUniqueID();
1882 trackK->fCovExtrap->Last()->SetUniqueID(id-1);
1883 trackK->fCovExtrap->RemoveAt(i);
1885 else ((TMatrixD*)(trackK->fCovExtrap->RemoveAt(i)))->Delete();
1886 id = trackK->fCovFilter->Last()->GetUniqueID();
1888 trackK->fCovFilter->Last()->SetUniqueID(id-1);
1889 trackK->fCovFilter->RemoveAt(i);
1891 else ((TMatrixD*)(trackK->fCovFilter->RemoveAt(i)))->Delete();
1892 id = trackK->fJacob->Last()->GetUniqueID();
1894 trackK->fJacob->Last()->SetUniqueID(id-1);
1895 trackK->fJacob->RemoveAt(i);
1897 else ((TMatrixD*)(trackK->fJacob->RemoveAt(i)))->Delete();
1900 //__________________________________________________________________________
1901 Bool_t AliMUONTrackK::Smooth(void)
1904 Int_t ihit = fNTrackHits - 1;
1905 AliMUONHitForRec *hit = (AliMUONHitForRec*) (*fTrackHitsPtr)[ihit];
1906 fChi2Smooth = new TArrayD(fNTrackHits);
1907 fChi2Smooth->Reset(-1);
1909 fParSmooth = new TObjArray(15);
1910 fParSmooth->Clear();
1913 cout << " ******** Enter Smooth " << endl;
1914 cout << (*fSteps)[fNSteps-1] << " " << fPosition << " " << fPositionNew << endl;
1916 for (Int_t i=fNSteps-1; i>=0; i--) cout << (*fSteps)[i] << " ";
1918 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();}
1920 for (Int_t i=ihit; i>=0; i--) cout << ((AliMUONHitForRec*)(*fTrackHitsPtr)[i])->GetZ() << " ";
1924 // Find last point corresponding to the last hit
1925 Int_t iLast = fNSteps - 1;
1926 for ( ; iLast>=0; iLast--) {
1927 //AZ(z->-z) if ((*fSteps)[iLast] + 0.01 > ((AliMUONHitForRec*)(*fTrackHitsPtr)[fNTrackHits-1])->GetZ()) break;
1928 if (TMath::Abs((*fSteps)[iLast]) + 0.01 > TMath::Abs(((AliMUONHitForRec*)(*fTrackHitsPtr)[fNTrackHits-1])->GetZ())) break;
1931 TMatrixD parSmooth = *((TMatrixD*)(fParFilter->UncheckedAt(iLast))); // last filtered = first smoothed
1933 TMatrixD covSmooth = *((TMatrixD*)(fCovFilter->UncheckedAt(iLast))); // last filtered = first smoothed
1934 TMatrixD tmp=covSmooth, weight=covSmooth, gain = covSmooth;
1935 TMatrixD tmpPar = *fTrackPar;
1936 //parSmooth.Print(); ((TMatrixD*)(fParExtrap->Last()))->Print();
1939 Double_t chi2max = 0;
1940 for (Int_t i=iLast+1; i>0; i--) {
1941 if (i == iLast + 1) goto L33; // temporary fix
1943 // Smoother gain matrix
1944 weight = *((TMatrixD*)(fCovExtrap->UncheckedAt(i)));
1945 if (weight.Determinant() != 0) {
1947 mnvertLocal(&(weight(0,0)), fgkSize,fgkSize,fgkSize,ifail);
1949 AliWarning(" Determinant weight=0:");
1952 tmp = TMatrixD(*((TMatrixD*)(fJacob->UncheckedAt(i))),TMatrixD::kTransposeMult,weight);
1953 gain = TMatrixD(*((TMatrixD*)(fCovFilter->UncheckedAt(i-1))),TMatrixD::kMult,tmp);
1954 //cout << (*fSteps)[i-1] << " " << (*fSteps)[i] << endl; gain.Print();
1956 // Smoothed parameter vector
1957 //((TMatrixD*)(fParExtrap->UncheckedAt(i)))->Dump();
1958 parSmooth -= *((TMatrixD*)(fParExtrap->UncheckedAt(i)));
1959 tmpPar = *((TMatrixD*)(fParFilter->UncheckedAt(i-1)));
1960 tmpPar += TMatrixD(gain,TMatrixD::kMult,parSmooth);
1963 // Smoothed covariance
1964 covSmooth -= *((TMatrixD*)(fCovExtrap->UncheckedAt(i)));
1965 weight = TMatrixD(TMatrixD::kTransposed,gain);
1966 tmp = TMatrixD(covSmooth,TMatrixD::kMult,weight);
1967 covSmooth = *((TMatrixD*)(fCovFilter->UncheckedAt(i-1)));
1968 covSmooth += TMatrixD(gain,TMatrixD::kMult,tmp);
1970 // Check if there was a measurement at given z
1972 for ( ; ihit>=0; ihit--) {
1973 hit = (AliMUONHitForRec*) (*fTrackHitsPtr)[ihit];
1974 if (TMath::Abs(hit->GetZ()-(*fSteps)[i-1]) < 0.1) { found = kTRUE; break; }
1975 //AZ(z->-z) else if (ihit < fNTrackHits-1 && hit->GetZ() > (*fSteps)[i-1]) { ihit++; break; }
1976 else if (ihit < fNTrackHits-1 && TMath::Abs(hit->GetZ()) > TMath::Abs((*fSteps)[i-1])) { ihit++; break; }
1978 if (!found) continue; // no measurement - skip the rest
1979 else if (fgDebug > 1) cout << i << " " << ihit << " " << hit->GetZ() << endl;
1980 if (ihit == 0) continue; // the first hit - skip the rest
1983 // Smoothed residuals
1985 tmpPar(0,0) = hit->GetBendingCoor() - parSmooth(0,0); // bending coordinate
1986 tmpPar(1,0) = hit->GetNonBendingCoor() - parSmooth(1,0); // non-bending coordinate
1988 cout << hit->GetBendingCoor() << " " << parSmooth(0,0) << " " << tmpPar(0,0) << endl;
1989 cout << hit->GetNonBendingCoor() << " " << parSmooth(1,0) << " " << tmpPar(1,0) << endl;
1991 // Cov. matrix of smoothed residuals
1993 tmp(0,0) = hit->GetBendingReso2() - covSmooth(0,0);
1994 tmp(1,1) = hit->GetNonBendingReso2() - covSmooth(1,1);
1995 tmp(0,1) = tmp(1,0) = -covSmooth(0,1);
1996 tmp(2,2) = tmp(3,3) = tmp(4,4) = 1;
1998 // Calculate Chi2 of smoothed residuals
1999 if (tmp.Determinant() != 0) {
2001 mnvertLocal(&(tmp(0,0)), fgkSize,fgkSize,fgkSize,ifail);
2003 AliWarning(" Determinant tmp=0:");
2005 TMatrixD vector(tmp,TMatrixD::kMult,tmpPar);
2006 TMatrixD chi2(tmpPar,TMatrixD::kTransposeMult,vector);
2007 if (fgDebug > 1) chi2.Print();
2008 (*fChi2Smooth)[ihit] = chi2(0,0);
2009 if (chi2(0,0) > chi2max) chi2max = chi2(0,0);
2011 if (chi2(0,0) < 0) {
2012 chi2.Print(); cout << " chi2 < 0 " << i << " " << iLast << endl;
2013 //AliFatal("chi2 < 0.");
2015 // Save smoothed parameters
2016 TMatrixD *par = new TMatrixD(parSmooth);
2017 fParSmooth->AddAtAndExpand(par, ihit);
2019 } // for (Int_t i=iLast+1;
2021 //if (chi2max > 16) {
2022 //if (chi2max > 25) {
2023 //if (chi2max > 50) {
2024 //if (chi2max > 100) {
2025 if (chi2max > fgkChi2max) {
2026 //if (Recover()) DropBranches();
2034 //__________________________________________________________________________
2035 void AliMUONTrackK::Outlier()
2037 // Adds new track with removed hit having the highest chi2
2040 cout << " ******** Enter Outlier " << endl;
2041 for (Int_t i=0; i<fNTrackHits; i++) printf("%10.4f", (*fChi2Smooth)[i]);
2043 for (Int_t i=0; i<fNTrackHits; i++) {
2044 printf("%10d", ((AliMUONHitForRec*)fTrackHitsPtr->UncheckedAt(i))->GetChamberNumber());
2049 Double_t chi2max = 0;
2051 for (Int_t i=0; i<fNTrackHits; i++) {
2052 if ((*fChi2Smooth)[i] < chi2max) continue;
2053 chi2max = (*fChi2Smooth)[i];
2056 // Check if the outlier is not from the seed segment
2057 AliMUONHitForRec *hit = (AliMUONHitForRec*) fTrackHitsPtr->UncheckedAt(imax);
2058 if (hit == fStartSegment->GetHitForRec1() || hit == fStartSegment->GetHitForRec2()) return; // to be changed probably
2060 // Check for missing station
2063 if (((AliMUONHitForRec*)fTrackHitsPtr->UncheckedAt(1))->GetChamberNumber() < 8) ok--;
2064 } else if (imax == fNTrackHits-1) {
2065 if (((AliMUONHitForRec*)fTrackHitsPtr->UncheckedAt(fNTrackHits-2))->GetChamberNumber() > 1) ok--;
2067 else if (((AliMUONHitForRec*)fTrackHitsPtr->UncheckedAt(imax-1))->GetChamberNumber()/2 - ((AliMUONHitForRec*)fTrackHitsPtr->UncheckedAt(imax+1))->GetChamberNumber()/2 > 1) ok--;
2068 if (!ok) { Recover(); return; } // try to recover track
2069 //AZ if (!ok) { if (fgDebug >= 0) cout << imax << endl; DropBranches(imax, 0); return; }
2071 // Remove saved steps and smoother matrices after the outlier
2072 RemoveMatrices(hit->GetZ());
2074 // Check for possible double track candidates
2075 //if (ExistDouble(hit)) return;
2077 TClonesArray *trackPtr = fgTrackReconstructor->GetRecTracksPtr();
2078 Int_t nRecTracks = fgTrackReconstructor->GetNRecTracks();
2080 AliMUONTrackK *trackK = 0;
2081 if (!fNSteps || GetStation0() == 3 && hit->GetChamberNumber() > 7) {
2082 // start track from segment
2083 trackK = new ((*trackPtr)[nRecTracks]) AliMUONTrackK(fStartSegment);
2084 fgTrackReconstructor->SetNRecTracks(nRecTracks+1);
2085 trackK->fRecover = 2;
2086 trackK->fSkipHit = hit;
2087 trackK->fNTrackHits = fNTrackHits;
2088 delete trackK->fTrackHitsPtr; // not efficient ?
2089 trackK->fTrackHitsPtr = new TObjArray(*fTrackHitsPtr);
2090 if (GetStation0() == 3) trackK->SortHits(1, trackK->fTrackHitsPtr);
2091 if (fgDebug > 0) cout << nRecTracks << " Outlier" << endl;
2094 trackK = new ((*trackPtr)[nRecTracks]) AliMUONTrackK(NULL, NULL);
2096 fgTrackReconstructor->SetNRecTracks(nRecTracks+1);
2097 trackK->fTrackDir = 1;
2098 trackK->fRecover = 2;
2099 trackK->fSkipHit = hit;
2100 Int_t iD = trackK->fParFilter->Last()->GetUniqueID();
2102 trackK->fParFilter->Last()->SetUniqueID(iD-1);
2103 CreateMatrix(trackK->fParFilter);
2105 trackK->fParFilter->Last()->SetUniqueID(iD);
2107 *((TMatrixD*)trackK->fParFilter->Last()) = *((TMatrixD*)fParExtrap->Last());
2108 *(trackK->fTrackPar) = *((TMatrixD*)trackK->fParFilter->Last());
2109 iD = trackK->fCovFilter->Last()->GetUniqueID();
2111 trackK->fCovFilter->Last()->SetUniqueID(iD-1);
2112 CreateMatrix(trackK->fCovFilter);
2114 trackK->fCovFilter->Last()->SetUniqueID(iD);
2116 *((TMatrixD*)trackK->fCovFilter->Last()) = *((TMatrixD*)fCovExtrap->Last());
2117 *(trackK->fWeight) = *((TMatrixD*)trackK->fCovFilter->Last());
2118 if (trackK->fWeight->Determinant() != 0) {
2120 mnvertLocal(&((*(trackK->fWeight))(0,0)), fgkSize,fgkSize,fgkSize,ifail);
2122 AliWarning(" Determinant fWeight=0:");
2124 trackK->fPosition = trackK->fPositionNew = (*fSteps)[fNSteps-1];
2126 for (Int_t i=0; i<fNTrackHits-1; i++) trackK->fChi2 += (*fChi2Array)[i];
2127 if (fgDebug > 0) cout << nRecTracks << " Outlier " << trackK->fChi2 << endl;
2130 //__________________________________________________________________________
2131 Double_t AliMUONTrackK::GetChi2PerPoint(Int_t iPoint) const
2133 // Return Chi2 at point
2134 return fChi2Smooth ? (*fChi2Smooth)[iPoint] : (*fChi2Array)[iPoint];
2138 //__________________________________________________________________________
2139 void AliMUONTrackK::Print(FILE *lun) const
2141 // Print out track information
2144 AliMUONHitForRec *hit = 0;
2145 if (fgTrackReconstructor->GetRecTrackRefHits()) {
2146 // from track ref. hits
2147 for (Int_t j=0; j<fNTrackHits; j++) {
2148 hit = (AliMUONHitForRec*) fTrackHitsPtr->UncheckedAt(j);
2149 if (hit->GetTTRTrack() > 1) { flag = 0; break; }
2151 for (Int_t j=0; j<fNTrackHits; j++) {
2152 printf("%10.4f", GetChi2PerPoint(j));
2153 if (GetChi2PerPoint(j) > -0.1) {
2154 hit = (AliMUONHitForRec*) fTrackHitsPtr->UncheckedAt(j);
2155 fprintf(lun,"%3d %3d %10.4f", gAlice->GetEvNumber(), hit->GetChamberNumber(), GetChi2PerPoint(j));
2156 fprintf(lun, "%3d %3d %3d \n", hit->GetTrackRefSignal(), hit->GetTTRTrack(), flag);
2161 // from raw clusters
2162 AliMUONRawCluster *clus = 0;
2163 TClonesArray *rawclusters = 0;
2164 for (Int_t i1=0; i1<fNTrackHits; i1++) {
2165 hit = (AliMUONHitForRec*) ((*fTrackHitsPtr)[i1]);
2166 rawclusters = fgTrackReconstructor->GetMUONData()->RawClusters(hit->GetChamberNumber());
2167 clus = (AliMUONRawCluster*) rawclusters->UncheckedAt(hit->GetHitNumber());
2168 if (TMath::Abs(clus->GetTrack(1)-1) < 2) {
2169 if (clus->GetTrack(2)) flag = 2;
2172 if (clus->GetTrack(2) && TMath::Abs(clus->GetTrack(2)-1) < 2) {
2179 Int_t sig[2]={1,1}, tid[2]={0};
2180 for (Int_t i1=0; i1<fNTrackHits; i1++) {
2181 if (GetChi2PerPoint(i1) < -0.1) continue;
2182 hit = (AliMUONHitForRec*) ((*fTrackHitsPtr)[i1]);
2183 rawclusters = fgTrackReconstructor->GetMUONData()->RawClusters(hit->GetChamberNumber());
2184 clus = (AliMUONRawCluster*) rawclusters->UncheckedAt(hit->GetHitNumber());
2185 for (Int_t j=0; j<2; j++) {
2186 tid[j] = clus->GetTrack(j+1) - 1;
2187 if (clus->GetTrack(j+1) < 0) { sig[j] = 0; tid[j] = 999; }
2189 fprintf(lun,"%3d %3d %10.4f", gAlice->GetEvNumber(), hit->GetChamberNumber(), GetChi2PerPoint(i1));
2190 if (!(clus->GetTrack(2))) fprintf(lun, "%3d %3d", sig[0], tid[0]); // simple cluster
2191 else { // track overlap
2192 fprintf(lun, "%3d %3d", TMath::Max(sig[0],sig[1]), TMath::Min(tid[0],tid[1]));
2193 //if (tid[0] < 2) flag *= 2;
2194 //else if (tid[1] < 2) flag *= 3;
2196 fprintf (lun, "%3d \n", flag);
2201 //__________________________________________________________________________
2202 void AliMUONTrackK::DropBranches(Int_t imax, TObjArray *hits)
2204 // Drop branches downstream of the skipped hit
2206 TClonesArray *trackPtr;
2207 AliMUONTrackK *trackK;
2209 trackPtr = fgTrackReconstructor->GetRecTracksPtr();
2210 nRecTracks = fgTrackReconstructor->GetNRecTracks();
2211 Int_t icand = trackPtr->IndexOf(this);
2212 if (!hits) hits = fTrackHitsPtr;
2214 // Check if the track candidate doesn't exist yet
2215 for (Int_t i=icand+1; i<nRecTracks; i++) {
2216 trackK = (AliMUONTrackK*) ((*trackPtr)[i]);
2217 if (trackK->fNTrackHits == 2 && trackK->GetRecover() == 0) continue;
2218 if (trackK->GetRecover() < 0) continue;
2220 if (trackK->fNTrackHits >= imax + 1) {
2221 for (Int_t j=0; j<=imax; j++) {
2222 //if (j != fNTrackHits-1 && (*trackK->fTrackHitsPtr)[j] != (*fTrackHitsPtr)[j]) break;
2223 if ((*trackK->fTrackHitsPtr)[j] != (*hits)[j]) break;
2225 if (hits != fTrackHitsPtr) {
2226 // Drop all branches downstream the hit (for Recover)
2227 trackK->SetRecover(-1);
2228 if (fgDebug >= 0 )cout << " Recover " << i << endl;
2231 // Check if the removal of the hit breaks the track
2234 if (((AliMUONHitForRec*)trackK->fTrackHitsPtr->UncheckedAt(1))->GetChamberNumber() < 8) ok--; }
2235 else if (imax == trackK->fNTrackHits-1) continue;
2236 // else if (imax == trackK->fNTrackHits-1) {
2237 //if (((AliMUONHitForRec*)trackK->fTrackHitsPtr->UncheckedAt(trackK->fNTrackHits-2))->GetChamberNumber() > 1) ok--;
2239 else if (((AliMUONHitForRec*)trackK->fTrackHitsPtr->UncheckedAt(imax-1))->GetChamberNumber()/2 - ((AliMUONHitForRec*)trackK->fTrackHitsPtr->UncheckedAt(imax+1))->GetChamberNumber()/2 > 1) ok--;
2240 if (!ok) trackK->SetRecover(-1);
2242 } // for (Int_t j=0;
2244 } // for (Int_t i=0;
2247 //__________________________________________________________________________
2248 void AliMUONTrackK::DropBranches(AliMUONSegment *segment)
2250 // Drop all candidates with the same seed segment
2252 TClonesArray *trackPtr;
2253 AliMUONTrackK *trackK;
2255 trackPtr = fgTrackReconstructor->GetRecTracksPtr();
2256 nRecTracks = fgTrackReconstructor->GetNRecTracks();
2257 Int_t icand = trackPtr->IndexOf(this);
2259 for (Int_t i=icand+1; i<nRecTracks; i++) {
2260 trackK = (AliMUONTrackK*) ((*trackPtr)[i]);
2261 if (trackK->fNTrackHits == 2 && trackK->GetRecover() == 0) continue;
2262 if (trackK->GetRecover() < 0) continue;
2263 if (trackK->fStartSegment == segment) trackK->SetRecover(-1);
2265 if (fgDebug >= 0) cout << " Drop segment " << endl;
2268 //__________________________________________________________________________
2269 AliMUONHitForRec* AliMUONTrackK::GetHitLastOk(void)
2271 // Return the hit where track stopped
2273 if (!fNSteps) return (AliMUONHitForRec*)((*fTrackHitsPtr)[1]);
2277 //__________________________________________________________________________
2278 Int_t AliMUONTrackK::GetStation0(void)
2280 // Return seed station number
2281 return fStartSegment->GetHitForRec1()->GetChamberNumber() / 2;
2284 //__________________________________________________________________________
2285 Bool_t AliMUONTrackK::ExistDouble(AliMUONHitForRec *hit)
2287 // Check if the track will make a double after outlier removal
2289 TClonesArray *trackPtr = fgTrackReconstructor->GetRecTracksPtr();
2290 Int_t nRecTracks = fgTrackReconstructor->GetNRecTracks();
2291 TObjArray *hitArray = new TObjArray(*fTrackHitsPtr);
2292 TObjArray *hitArray1 = new TObjArray(*hitArray);
2293 hitArray1->Remove(hit);
2294 hitArray1->Compress();
2296 Bool_t same = kFALSE;
2297 for (Int_t i=0; i<nRecTracks; i++) {
2298 AliMUONTrackK *trackK = (AliMUONTrackK*) ((*trackPtr)[i]);
2299 if (trackK->fNTrackHits == 2 && trackK->GetRecover() == 0) continue;
2300 if (trackK == this) continue;
2301 if (trackK->fNTrackHits == fNTrackHits || trackK->fNTrackHits == fNTrackHits-1) {
2302 TObjArray *hits = new TObjArray(*trackK->fTrackHitsPtr);
2304 if (trackK->fNTrackHits == fNTrackHits) {
2305 for (Int_t j=0; j<fNTrackHits; j++) {
2306 if (hits->UncheckedAt(j) != hitArray->UncheckedAt(j)) { same = kFALSE; break; }
2308 if (same) { delete hits; break; }
2309 if (trackK->fSkipHit) {
2310 TObjArray *hits1 = new TObjArray(*hits);
2311 if (hits1->Remove(trackK->fSkipHit) > 0) {
2314 for (Int_t j=0; j<fNTrackHits-1; j++) {
2315 if (hits1->UncheckedAt(j) != hitArray1->UncheckedAt(j)) { same = kFALSE; break; }
2317 if (same) { delete hits1; break; }
2322 // Check with removed outlier
2324 for (Int_t j=0; j<fNTrackHits-1; j++) {
2325 if (hits->UncheckedAt(j) != hitArray1->UncheckedAt(j)) { same = kFALSE; break; }
2327 if (same) { delete hits; break; }
2331 } // for (Int_t i=0; i<nRecTracks;
2332 delete hitArray; delete hitArray1;
2333 if (same && fgDebug >= 0) cout << " Same" << endl;
2337 //__________________________________________________________________________
2338 Bool_t AliMUONTrackK::ExistDouble(void)
2340 // Check if the track will make a double after recovery
2342 TClonesArray *trackPtr = fgTrackReconstructor->GetRecTracksPtr();
2343 Int_t nRecTracks = fgTrackReconstructor->GetNRecTracks();
2345 TObjArray *hitArray = new TObjArray(*fTrackHitsPtr);
2346 if (GetStation0() == 3) SortHits(0, hitArray); // sort
2347 //if (GetStation0() == 3) SortHits(1, hitArray); // unsort
2349 Bool_t same = kFALSE;
2350 for (Int_t i=0; i<nRecTracks; i++) {
2351 AliMUONTrackK *trackK = (AliMUONTrackK*) ((*trackPtr)[i]);
2352 if (trackK->fNTrackHits == 2 && trackK->GetRecover() == 0) continue;
2353 if (trackK == this) continue;
2354 //AZ if (trackK->GetRecover() < 0) continue; //
2355 if (trackK->fNTrackHits >= fNTrackHits) {
2356 TObjArray *hits = new TObjArray(*trackK->fTrackHitsPtr);
2357 if (trackK->GetStation0() == 3) SortHits(0, hits); // sort
2358 //if (trackK->GetStation0() == 3) SortHits(1, hits); // unsort
2359 for (Int_t j=0; j<fNTrackHits; j++) {
2360 //cout << fNTrackHits << " " << i << " " << j << " " << (*hitArray)[j] << " " << (*hits)[j] << " " << trackK->fSkipHit << endl;
2361 if (j != fNTrackHits-1 && (*hitArray)[j] != (*hits)[j]) break;
2362 if (j == fNTrackHits-1) {
2363 if (trackK->fSkipHit && TMath::Abs(((AliMUONHitForRec*)((*hitArray)[j]))->GetZ()-trackK->fSkipHit->GetZ()) < 0.5) same = kTRUE;
2364 //if (trackK->fNTrackHits > fNTrackHits &&
2365 //if (trackK->fSkipHit) cout << ((AliMUONHitForRec*)((*hitArray)[j]))->GetZ() << " " << trackK->fSkipHit->GetZ() << endl;
2367 } // for (Int_t j=0;
2371 } // for (Int_t i=0;