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 ///////////////////////////////////////////////////////////////////////////////
20 // The standard TRD tracker //
21 // Based on Kalman filltering approach //
24 // M. Ivanov (Marian.Ivanov@cern.ch) //
25 // Y. Belikov (Jouri.Belikov@cern.ch) //
27 ///////////////////////////////////////////////////////////////////////////////
30 #include <Riostream.h>
36 #include <TLinearFitter.h>
37 #include <TObjArray.h>
40 #include <TTreeStream.h>
42 #include "AliESDEvent.h"
43 #include "AliESDtrack.h"
44 #include "AliAlignObj.h"
45 #include "AliRieman.h"
46 #include "AliTrackPointArray.h"
48 #include "AliTRDgeometry.h"
49 #include "AliTRDpadPlane.h"
50 #include "AliTRDgeometry.h"
51 #include "AliTRDcluster.h"
52 #include "AliTRDtrack.h"
53 #include "AliTRDseed.h"
54 #include "AliTRDcalibDB.h"
55 #include "AliTRDCommonParam.h"
56 #include "AliTRDtracker.h"
57 #include "AliTRDReconstructor.h"
58 #include "AliTRDCalibraFillHisto.h"
60 ClassImp(AliTRDtracker)
62 const Float_t AliTRDtracker::fgkMinClustersInTrack = 0.5; //
63 const Float_t AliTRDtracker::fgkLabelFraction = 0.8; //
64 const Double_t AliTRDtracker::fgkMaxChi2 = 12.0; //
65 const Double_t AliTRDtracker::fgkMaxSnp = 0.95; // Corresponds to tan = 3
66 const Double_t AliTRDtracker::fgkMaxStep = 2.0; // Maximal step size in propagation
68 //_____________________________________________________________________________
69 AliTRDtracker::AliTRDtracker()
96 // Default constructor
99 for (Int_t i = 0; i < kTrackingSectors; i++) {
102 for (Int_t j = 0; j < 5; j++) {
103 for (Int_t k = 0; k < 18; k++) {
104 fHoles[j][k] = kFALSE;
112 //_____________________________________________________________________________
113 AliTRDtracker::AliTRDtracker(const AliTRDtracker &t)
134 ,fTimeBinsPerPlane(0)
135 ,fAddTRDseeds(kFALSE)
145 //_____________________________________________________________________________
146 AliTRDtracker::AliTRDtracker(const TFile */*geomfile*/)
162 ,fClusters(new TObjArray(2000))
164 ,fSeeds(new TObjArray(2000))
166 ,fTracks(new TObjArray(1000))
167 ,fTimeBinsPerPlane(0)
168 ,fAddTRDseeds(kFALSE)
176 TDirectory *savedir = gDirectory;
178 fGeom = new AliTRDgeometry();
180 for (Int_t geomS = 0; geomS < kTrackingSectors; geomS++) {
182 fTrSec[trS] = new AliTRDtrackingSector(fGeom,geomS);
183 for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) {
185 fHoles[icham][trS] = fGeom->IsHole(0,icham,geomS);
189 AliTRDpadPlane *padPlane = fGeom->GetPadPlane(0,0);
190 Float_t tiltAngle = TMath::Abs(padPlane->GetTiltingAngle());
191 if (tiltAngle < 0.1) {
195 if (!AliTRDcalibDB::Instance()) {
196 AliFatal("Could not get calibration object");
198 fTimeBinsPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
200 fDebugStreamer = new TTreeSRedirector("TRDdebug.root");
208 //_____________________________________________________________________________
209 AliTRDtracker::~AliTRDtracker()
212 // Destructor of AliTRDtracker
234 for (Int_t geomS = 0; geomS < kTrackingSectors; geomS++) {
235 delete fTrSec[geomS];
238 if (fDebugStreamer) {
239 delete fDebugStreamer;
244 //_____________________________________________________________________________
245 Int_t AliTRDtracker::LocalToGlobalID(Int_t lid)
248 // Transform internal TRD ID to global detector ID
251 Int_t isector = fGeom->GetSector(lid);
252 Int_t ichamber = fGeom->GetChamber(lid);
253 Int_t iplan = fGeom->GetPlane(lid);
255 AliGeomManager::ELayerID iLayer = AliGeomManager::kTRD1;
258 iLayer = AliGeomManager::kTRD1;
261 iLayer = AliGeomManager::kTRD2;
264 iLayer = AliGeomManager::kTRD3;
267 iLayer = AliGeomManager::kTRD4;
270 iLayer = AliGeomManager::kTRD5;
273 iLayer = AliGeomManager::kTRD6;
277 Int_t modId = isector * fGeom->Ncham() + ichamber;
278 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,modId);
284 //_____________________________________________________________________________
285 Int_t AliTRDtracker::GlobalToLocalID(Int_t gid)
288 // Transform global detector ID to local detector ID
292 AliGeomManager::ELayerID layerId = AliGeomManager::VolUIDToLayer(gid,modId);
294 Int_t isector = modId / fGeom->Ncham();
295 Int_t ichamber = modId % fGeom->Ncham();
299 case AliGeomManager::kTRD1:
302 case AliGeomManager::kTRD2:
305 case AliGeomManager::kTRD3:
308 case AliGeomManager::kTRD4:
311 case AliGeomManager::kTRD5:
314 case AliGeomManager::kTRD6:
325 Int_t lid = fGeom->GetDetector(iLayer,ichamber,isector);
331 //_____________________________________________________________________________
332 Bool_t AliTRDtracker::AdjustSector(AliTRDtrack *track)
335 // Rotates the track when necessary
338 Double_t alpha = AliTRDgeometry::GetAlpha();
339 Double_t y = track->GetY();
340 Double_t ymax = track->GetX()*TMath::Tan(0.5*alpha);
342 // Is this still needed ????
343 //Int_t ns = AliTRDgeometry::kNsect;
344 //Int_t s=Int_t(track->GetAlpha()/alpha)%ns;
348 if (!track->Rotate( alpha)) {
352 else if (y < -ymax) {
354 if (!track->Rotate(-alpha)) {
363 //_____________________________________________________________________________
364 AliTRDcluster *AliTRDtracker::GetCluster(AliTRDtrack *track, Int_t plane
365 , Int_t timebin, UInt_t &index)
368 // Try to find cluster in the backup list
371 AliTRDcluster *cl =0;
372 Int_t *indexes = track->GetBackupIndexes();
374 for (UInt_t i = 0; i < kMaxTimeBinIndex; i++) {
375 if (indexes[i] == 0) {
378 AliTRDcluster *cli = (AliTRDcluster *) fClusters->UncheckedAt(indexes[i]);
382 if (cli->GetLocalTimeBin() != timebin) {
385 Int_t iplane = fGeom->GetPlane(cli->GetDetector());
386 if (iplane == plane) {
397 //_____________________________________________________________________________
398 Int_t AliTRDtracker::GetLastPlane(AliTRDtrack *track)
401 // Return last updated plane
405 Int_t *indexes = track->GetBackupIndexes();
407 for (UInt_t i = 0; i < kMaxTimeBinIndex; i++) {
408 AliTRDcluster *cli = (AliTRDcluster *) fClusters->UncheckedAt(indexes[i]);
412 Int_t iplane = fGeom->GetPlane(cli->GetDetector());
413 if (iplane > lastplane) {
422 //_____________________________________________________________________________
423 Int_t AliTRDtracker::Clusters2Tracks(AliESDEvent *event)
426 // Finds tracks within the TRD. The ESD event is expected to contain seeds
427 // at the outer part of the TRD. The seeds
428 // are found within the TRD if fAddTRDseeds is TRUE.
429 // The tracks are propagated to the innermost time bin
430 // of the TRD and the ESD event is updated
433 Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins();
434 Float_t foundMin = fgkMinClustersInTrack * timeBins;
437 //Int_t innerTB = fTrSec[0]->GetInnerTimeBin();
439 Int_t n = event->GetNumberOfTracks();
440 for (Int_t i = 0; i < n; i++) {
442 AliESDtrack *seed = event->GetTrack(i);
443 ULong_t status = seed->GetStatus();
444 if ((status & AliESDtrack::kTRDout) == 0) {
447 if ((status & AliESDtrack::kTRDin) != 0) {
452 AliTRDtrack *seed2 = new AliTRDtrack(*seed);
453 //seed2->ResetCovariance();
454 AliTRDtrack *pt = new AliTRDtrack(*seed2,seed2->GetAlpha());
455 AliTRDtrack &t = *pt;
456 FollowProlongation(t);
457 if (t.GetNumberOfClusters() >= foundMin) {
459 CookLabel(pt,1 - fgkLabelFraction);
464 Double_t xTPC = 250.0;
465 if (PropagateToX(t,xTPC,fgkMaxStep)) {
466 seed->UpdateTrackParams(pt, AliESDtrack::kTRDin);
473 AliInfo(Form("Number of loaded seeds: %d",nseed));
474 AliInfo(Form("Number of found tracks from loaded seeds: %d",found));
475 AliInfo(Form("Total number of found tracks: %d",found));
481 //_____________________________________________________________________________
482 Int_t AliTRDtracker::PropagateBack(AliESDEvent *event)
485 // Gets seeds from ESD event. The seeds are AliTPCtrack's found and
486 // backpropagated by the TPC tracker. Each seed is first propagated
487 // to the TRD, and then its prolongation is searched in the TRD.
488 // If sufficiently long continuation of the track is found in the TRD
489 // the track is updated, otherwise it's stored as originaly defined
490 // by the TPC tracker.
493 Int_t found = 0; // number of tracks found
494 Float_t foundMin = 20.0;
495 Int_t n = event->GetNumberOfTracks();
498 Float_t *quality = new Float_t[n];
499 Int_t *index = new Int_t[n];
500 for (Int_t i = 0; i < n; i++) {
501 AliESDtrack *seed = event->GetTrack(i);
502 Double_t covariance[15];
503 seed->GetExternalCovariance(covariance);
504 quality[i] = covariance[0]+covariance[2];
505 //quality[i] = covariance[0];
507 TMath::Sort(n,quality,index,kFALSE);
509 for (Int_t i = 0; i < n; i++) {
511 //AliESDtrack *seed = event->GetTrack(i);
512 AliESDtrack *seed = event->GetTrack(index[i]);
515 ULong_t status = seed->GetStatus();
516 if ((status & AliESDtrack::kTPCout) == 0) {
521 if ((status & AliESDtrack::kTRDout) != 0) {
526 Int_t lbl = seed->GetLabel();
527 AliTRDtrack *track = new AliTRDtrack(*seed);
528 track->SetSeedLabel(lbl);
529 seed->UpdateTrackParams(track,AliESDtrack::kTRDbackup); // Make backup
531 Float_t p4 = track->GetC();
532 Int_t expectedClr = FollowBackProlongation(*track);
535 fHX->Fill(track->GetX());
538 // store the last measurement
540 fHNClTrack->Fill(track->GetNumberOfClusters());
541 if (track->GetNumberOfClusters() >= foundMin) {
545 CookdEdxTimBin(*track);
546 CookLabel(track,1 - fgkLabelFraction);
547 if (track->GetBackupTrack()) {
548 //fHBackfit->Fill(5);
549 UseClusters(track->GetBackupTrack());
550 seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup);
556 // inter-tracks competition ???
557 if ((TMath::Abs(track->GetC() - p4) / TMath::Abs(p4) < 0.2) ||
558 (track->Pt() > 0.8)) {
563 // Make backup for back propagation
566 Int_t foundClr = track->GetNumberOfClusters();
567 if (foundClr >= foundMin) {
569 track->CookdEdxTimBin(seed->GetID()); // A.Bercuci 25.07.07
570 CookLabel(track,1 - fgkLabelFraction);
571 if (track->GetBackupTrack()) {
572 UseClusters(track->GetBackupTrack());
575 // Sign only gold tracks
576 if (track->GetChi2() / track->GetNumberOfClusters() < 4) {
577 if ((seed->GetKinkIndex(0) == 0) &&
578 (track->Pt() < 1.5)) {
582 Bool_t isGold = kFALSE;
585 if (track->GetChi2() / track->GetNumberOfClusters() < 5) {
586 //seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup);
587 if (track->GetBackupTrack()) {
588 seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup);
597 (track->GetNCross() == 0) &&
598 (track->GetChi2() / track->GetNumberOfClusters() < 7)) {
599 //seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup);
600 if (track->GetBackupTrack()) {
601 seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup);
607 (track->GetBackupTrack())) {
608 if ((track->GetBackupTrack()->GetNumberOfClusters() > foundMin) &&
609 ((track->GetBackupTrack()->GetChi2()/(track->GetBackupTrack()->GetNumberOfClusters()+1)) < 7)) {
610 seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup);
615 if ((track->StatusForTOF() > 0) &&
616 (track->GetNCross() == 0) &&
617 (Float_t(track->GetNumberOfClusters()) / Float_t(track->GetNExpected()) > 0.4)) {
618 //seed->UpdateTrackParams(track->GetBackupTrack(), AliESDtrack::kTRDbackup);
626 // Debug part of tracking
627 TTreeSRedirector &cstream = *fDebugStreamer;
628 Int_t eventNrInFile = event->GetEventNumberInFile(); // This is most likely NOT the event number you'd like to use. It has nothing to do with the 'real' event number.
629 if (AliTRDReconstructor::StreamLevel() > 0) {
630 if (track->GetBackupTrack()) {
632 << "EventNrInFile=" << eventNrInFile
635 << "trdback.=" << track->GetBackupTrack()
640 << "EventNrInFile=" << eventNrInFile
643 << "trdback.=" << track
649 // Propagation to the TOF (I.Belikov)
650 if (track->GetStop() == kFALSE) {
653 Double_t xtof = 371.0;
654 Double_t xTOF0 = 370.0;
656 Double_t c2 = track->GetSnp() + track->GetC() * (xtof - track->GetX());
657 if (TMath::Abs(c2) >= 0.99) {
664 PropagateToX(*track,xTOF0,fgkMaxStep);
666 // Energy losses taken to the account - check one more time
667 c2 = track->GetSnp() + track->GetC() * (xtof - track->GetX());
668 if (TMath::Abs(c2) >= 0.99) {
675 //if (!PropagateToX(*track,xTOF0,fgkMaxStep)) {
676 // fHBackfit->Fill(7);
681 Double_t ymax = xtof * TMath::Tan(0.5 * AliTRDgeometry::GetAlpha());
683 track->GetYAt(xtof,GetBz(),y);
685 if (!track->Rotate( AliTRDgeometry::GetAlpha())) {
691 else if (y < -ymax) {
692 if (!track->Rotate(-AliTRDgeometry::GetAlpha())) {
699 if (track->PropagateTo(xtof)) {
700 seed->UpdateTrackParams(track,AliESDtrack::kTRDout);
703 for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
704 for (Int_t j = 0; j < AliESDtrack::kNSlice; j++) {
705 seed->SetTRDsignals(track->GetPIDsignals(i,j),i,j);
707 seed->SetTRDTimBin(track->GetPIDTimBin(i),i);
709 //seed->SetTRDtrack(new AliTRDtrack(*track));
710 if (track->GetNumberOfClusters() > foundMin) {
721 if ((track->GetNumberOfClusters() > 15) &&
722 (track->GetNumberOfClusters() > 0.5*expectedClr)) {
724 seed->UpdateTrackParams(track,AliESDtrack::kTRDout);
727 //seed->SetStatus(AliESDtrack::kTRDStop);
728 for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
729 for (Int_t j = 0; j <AliESDtrack::kNSlice; j++) {
730 seed->SetTRDsignals(track->GetPIDsignals(i,j),i,j);
732 seed->SetTRDTimBin(track->GetPIDTimBin(i),i);
734 //seed->SetTRDtrack(new AliTRDtrack(*track));
740 seed->SetTRDQuality(track->StatusForTOF());
741 seed->SetTRDBudget(track->GetBudget(0));
747 AliInfo(Form("Number of seeds: %d",fNseeds));
748 AliInfo(Form("Number of back propagated TRD tracks: %d",found));
751 if (AliTRDReconstructor::SeedingOn()) {
752 MakeSeedsMI(3,5,event);
766 //_____________________________________________________________________________
767 Int_t AliTRDtracker::RefitInward(AliESDEvent *event)
770 // Refits tracks within the TRD. The ESD event is expected to contain seeds
771 // at the outer part of the TRD.
772 // The tracks are propagated to the innermost time bin
773 // of the TRD and the ESD event is updated
774 // Origin: Thomas KUHR (Thomas.Kuhr@cern.ch)
777 Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins();
778 Float_t foundMin = fgkMinClustersInTrack * timeBins;
782 //Int_t innerTB = fTrSec[0]->GetInnerTimeBin();
785 Int_t n = event->GetNumberOfTracks();
786 for (Int_t i = 0; i < n; i++) {
788 AliESDtrack *seed = event->GetTrack(i);
789 new (&seed2) AliTRDtrack(*seed);
792 if (seed2.GetX() < 270.0) {
793 seed->UpdateTrackParams(&seed2,AliESDtrack::kTRDbackup); // Backup TPC track - only update
798 ULong_t status = seed->GetStatus();
799 if ((status & AliESDtrack::kTRDout) == 0) {
803 if ((status & AliESDtrack::kTRDin) != 0) {
811 seed2.ResetCovariance(50.0);
813 AliTRDtrack *pt = new AliTRDtrack(seed2,seed2.GetAlpha());
814 Int_t *indexes2 = seed2.GetIndexes();
815 for (Int_t i = 0; i < AliESDtrack::kNPlane;i++) {
816 for (Int_t j = 0; j < AliESDtrack::kNSlice;j++) {
817 pt->SetPIDsignals(seed2.GetPIDsignals(i,j),i,j);
819 pt->SetPIDTimBin(seed2.GetPIDTimBin(i),i);
822 Int_t *indexes3 = pt->GetBackupIndexes();
823 for (Int_t i = 0; i < 200;i++) {
824 if (indexes2[i] == 0) {
827 indexes3[i] = indexes2[i];
830 //AliTRDtrack *pt = seed2;
831 //AliTRDtrack &t = *pt;
832 FollowProlongation(*pt);
833 //if (pt->GetNumberOfClusters() >= foundMin) {
835 //CookLabel(pt, 1-fgkLabelFraction);
837 pt->CookdEdxTimBin(seed->GetID());
838 pt->SetPIDMethod(AliTRDtrack::kLQ); //switch between TRD PID methods
840 //pt->Calibrate(); // slot for calibration
844 Double_t xTPC = 250.0;
845 if (PropagateToX(*pt,xTPC,fgkMaxStep)) {
847 seed->UpdateTrackParams(pt,AliESDtrack::kTRDrefit);
850 for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
851 for (Int_t j = 0; j < AliESDtrack::kNSlice; j++) {
852 seed->SetTRDsignals(pt->GetPIDsignals(i,j),i,j);
854 seed->SetTRDTimBin(pt->GetPIDTimBin(i),i);
858 // If not prolongation to TPC - propagate without update
860 AliTRDtrack *seed2 = new AliTRDtrack(*seed);
861 seed2->ResetCovariance(5.0);
862 AliTRDtrack *pt2 = new AliTRDtrack(*seed2,seed2->GetAlpha());
864 if (PropagateToX(*pt2,xTPC,fgkMaxStep)) {
866 pt2->CookdEdxTimBin(seed->GetID());
867 seed->UpdateTrackParams(pt2,AliESDtrack::kTRDrefit);
870 for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
871 for (Int_t j = 0; j < AliESDtrack::kNSlice; j++) {
872 seed->SetTRDsignals(pt2->GetPIDsignals(i,j),i,j);
874 seed->SetTRDTimBin(pt2->GetPIDTimBin(i),i);
878 // Add TRD track to ESDfriendTrack - maybe this tracks are not useful for post-processing - TODO make decission
879 if (AliTRDReconstructor::StreamLevel() > 0) {
880 seed->AddCalibObject(new AliTRDtrack(*pt2/*, kTRUE*/));
885 // Add TRD track to ESDfriendTrack
886 if (AliTRDReconstructor::StreamLevel() > 0) {
887 seed->AddCalibObject(new AliTRDtrack(*pt/*, kTRUE*/));
893 AliInfo(Form("Number of loaded seeds: %d",nseed));
894 AliInfo(Form("Number of found tracks from loaded seeds: %d",found));
900 //_____________________________________________________________________________
901 Int_t AliTRDtracker::FollowProlongation(AliTRDtrack &t)
904 // Starting from current position on track=t this function tries
905 // to extrapolate the track up to timeBin=0 and to confirm prolongation
906 // if a close cluster is found. Returns the number of clusters
907 // expected to be found in sensitive layers
908 // GeoManager used to estimate mean density
912 Int_t lastplane = GetLastPlane(&t);
915 Int_t expectedNumberOfClusters = 0;
917 for (Int_t iplane = lastplane; iplane >= 0; iplane--) {
919 Int_t row0 = GetGlobalTimeBin(0,iplane,GetTimeBinsPerPlane()-1);
920 Int_t rowlast = GetGlobalTimeBin(0,iplane,0);
923 // Propagate track close to the plane if neccessary
925 Double_t currentx = fTrSec[0]->GetLayer(rowlast)->GetX();
926 if (currentx < (-fgkMaxStep + t.GetX())) {
927 // Propagate closer to chamber - safety space fgkMaxStep
928 if (!PropagateToX(t,currentx+fgkMaxStep,fgkMaxStep)) {
933 if (!AdjustSector(&t)) {
938 // Get material budget
947 // Starting global position
949 // End global position
950 x = fTrSec[0]->GetLayer(row0)->GetX();
951 if (!t.GetProlongation(x,y,z)) {
954 xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha());
955 xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha());
957 AliTracker::MeanMaterialBudget(xyz0,xyz1,param);
958 xrho= param[0]*param[4];
959 xx0 = param[1]; // Get mean propagation parameters
960 // A.Bercuci 25.07.07
961 // Flags for marking the track momentum and direction. The track is
962 // marked only if it has at least 1 cluster picked up in the current
964 Bool_t kUPDATED = kFALSE, kMARKED = kFALSE;
967 // Propagate and update
969 sector = t.GetSector();
970 //for (Int_t itime=GetTimeBinsPerPlane()-1;itime>=0;itime--) {
971 for (Int_t itime = 0 ; itime < GetTimeBinsPerPlane(); itime++) {
972 // A.Bercuci 25.07.07
973 // Mark track kinematics
974 if(itime > 10 && kUPDATED && !kMARKED){
975 t.SetTrackSegmentDirMom(iplane);
979 Int_t ilayer = GetGlobalTimeBin(0,iplane,itime);
980 expectedNumberOfClusters++;
981 t.SetNExpected(t.GetNExpected() + 1);
982 if (t.GetX() > 345.0) {
983 t.SetNExpectedLast(t.GetNExpectedLast() + 1);
985 AliTRDpropagationLayer &timeBin = *(fTrSec[sector]->GetLayer(ilayer));
986 AliTRDcluster *cl = 0;
988 Double_t maxChi2 = fgkMaxChi2;
993 AliTRDcluster *cl0 = timeBin[0];
995 // No clusters in given time bin
999 Int_t plane = fGeom->GetPlane(cl0->GetDetector());
1000 if (plane > lastplane) {
1004 Int_t timebin = cl0->GetLocalTimeBin();
1005 AliTRDcluster *cl2 = GetCluster(&t,plane,timebin,index);
1009 //Double_t h01 = GetTiltFactor(cl); //I.B's fix
1010 //maxChi2=t.GetPredictedChi2(cl,h01);
1013 //if (cl->GetNPads()<5)
1014 Double_t dxsample = timeBin.GetdX();
1015 t.SetSampledEdx(TMath::Abs(cl->GetQ()/dxsample));
1016 Double_t h01 = GetTiltFactor(cl);
1017 Int_t det = cl->GetDetector();
1018 Int_t plane = fGeom->GetPlane(det);
1019 if (t.GetX() > 345.0) {
1020 t.SetNLast(t.GetNLast() + 1);
1021 t.SetChi2Last(t.GetChi2Last() + maxChi2);
1024 Double_t xcluster = cl->GetX();
1025 t.PropagateTo(xcluster,xx0,xrho);
1027 if (!AdjustSector(&t)) {
1030 maxChi2 = t.GetPredictedChi2(cl,h01);
1033 if (!t.UpdateMI(cl,maxChi2,index,h01,plane)) {
1036 // A.Bercuci 25.07.07
1037 //SetCluster(cl, GetNumberOfClusters()-1);
1045 return expectedNumberOfClusters;
1048 //_____________________________________________________________________________
1049 Int_t AliTRDtracker::FollowBackProlongation(AliTRDtrack &t)
1052 // Starting from current radial position of track <t> this function
1053 // extrapolates the track up to outer timebin and in the sensitive
1054 // layers confirms prolongation if a close cluster is found.
1055 // Returns the number of clusters expected to be found in sensitive layers
1056 // Use GEO manager for material Description
1058 // return number of assigned clusters ?
1063 Int_t clusters[1000];
1065 Double_t xrho = 0.0;
1066 Int_t expectedNumberOfClusters = 0;
1067 Float_t ratio0 = 0.0;
1068 AliTRDtracklet tracklet;
1070 // Calibration fill 2D
1071 AliTRDCalibraFillHisto *calibra = AliTRDCalibraFillHisto::Instance();
1073 AliInfo("Could not get Calibra instance\n");
1075 if (calibra->GetMITracking()) {
1076 calibra->ResetTrack();
1079 for (Int_t i = 0; i < 1000; i++) {
1083 for (Int_t iplane = 0; iplane < AliESDtrack::kNPlane; iplane++) {
1085 int hb = iplane * 10;
1086 fHClSearch->Fill(hb);
1088 Int_t row0 = GetGlobalTimeBin(0,iplane,GetTimeBinsPerPlane()-1);
1089 Int_t rowlast = GetGlobalTimeBin(0,iplane,0);
1090 Double_t currentx = fTrSec[0]->GetLayer(row0)->GetX();
1091 if (currentx < t.GetX()) {
1092 fHClSearch->Fill(hb+1);
1097 // Propagate closer to chamber if neccessary
1099 if (currentx > (fgkMaxStep + t.GetX())) {
1100 if (!PropagateToX(t,currentx-fgkMaxStep,fgkMaxStep)) {
1101 fHClSearch->Fill(hb+2);
1105 if (!AdjustSector(&t)) {
1106 fHClSearch->Fill(hb+3);
1109 if (TMath::Abs(t.GetSnp()) > fgkMaxSnp) {
1110 fHClSearch->Fill(hb+4);
1115 // Get material budget inside of chamber
1123 // Starting global position
1125 // End global position
1126 x = fTrSec[0]->GetLayer(rowlast)->GetX();
1127 if (!t.GetProlongation(x,y,z)) {
1128 fHClSearch->Fill(hb+5);
1131 xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha());
1132 xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha());
1134 AliTracker::MeanMaterialBudget(xyz0,xyz1,param);
1135 xrho = param[0]*param[4];
1136 xx0 = param[1]; // Get mean propagation parameters
1141 sector = t.GetSector();
1142 Float_t ncl = FindClusters(sector,row0,rowlast,&t,clusters,tracklet);
1143 fHNCl->Fill(tracklet.GetN());
1145 if (tracklet.GetN() < GetTimeBinsPerPlane()/3) {
1146 fHClSearch->Fill(hb+6);
1151 // Propagate and update track
1153 for (Int_t itime = GetTimeBinsPerPlane()-1; itime >= 0; itime--) {
1155 Int_t ilayer = GetGlobalTimeBin(0, iplane,itime);
1156 expectedNumberOfClusters++;
1157 t.SetNExpected(t.GetNExpected() + 1);
1158 if (t.GetX() > 345.0) {
1159 t.SetNExpectedLast(t.GetNExpectedLast() + 1);
1161 AliTRDpropagationLayer &timeBin = *(fTrSec[sector]->GetLayer(ilayer));
1162 AliTRDcluster *cl = 0;
1164 Double_t maxChi2 = fgkMaxChi2;
1169 if (clusters[ilayer] > 0) {
1170 index = clusters[ilayer];
1171 cl = (AliTRDcluster *)GetCluster(index);
1172 //Double_t h01 = GetTiltFactor(cl); // I.B's fix
1173 //maxChi2=t.GetPredictedChi2(cl,h01); //
1178 //if (cl->GetNPads() < 5)
1179 Double_t dxsample = timeBin.GetdX();
1180 t.SetSampledEdx(TMath::Abs(cl->GetQ()/dxsample));
1181 Double_t h01 = GetTiltFactor(cl);
1182 Int_t det = cl->GetDetector();
1183 Int_t plane = fGeom->GetPlane(det);
1184 if (t.GetX() > 345.0) {
1185 t.SetNLast(t.GetNLast() + 1);
1186 t.SetChi2Last(t.GetChi2Last() + maxChi2);
1188 Double_t xcluster = cl->GetX();
1189 t.PropagateTo(xcluster,xx0,xrho);
1190 maxChi2 = t.GetPredictedChi2(cl,h01);
1193 if (!t.UpdateMI(cl,maxChi2,index,h01,plane)) {
1194 if (!t.Update(cl,maxChi2,index,h01)) {
1197 } // else SetCluster(cl, GetNumberOfClusters()-1); // A.Bercuci 25.07.07
1200 if (calibra->GetMITracking()) {
1201 calibra->UpdateHistograms(cl,&t);
1204 // Reset material budget if 2 consecutive gold
1206 if ((t.GetTracklets(plane).GetN() + t.GetTracklets(plane-1).GetN()) > 20) {
1217 ratio0 = ncl / Float_t(fTimeBinsPerPlane);
1218 Float_t ratio1 = Float_t(t.GetNumberOfClusters()+1) / Float_t(t.GetNExpected()+1);
1219 if ((tracklet.GetChi2() < 18.0) &&
1222 (ratio0+ratio1 > 1.5) &&
1223 (t.GetNCross() == 0) &&
1224 (TMath::Abs(t.GetSnp()) < 0.85) &&
1225 (t.GetNumberOfClusters() > 20)){
1226 //if (ratio0 > 0.8) {
1227 t.MakeBackupTrack(); // Make backup of the track until is gold
1232 return expectedNumberOfClusters;
1235 //_____________________________________________________________________________
1236 Int_t AliTRDtracker::PropagateToX(AliTRDtrack &t, Double_t xToGo, Double_t maxStep)
1239 // Starting from current radial position of track <t> this function
1240 // extrapolates the track up to radial position <xToGo>.
1241 // Returns 1 if track reaches the plane, and 0 otherwise
1244 const Double_t kEpsilon = 0.00001;
1245 //Double_t tanmax = TMath::Tan(0.5*AliTRDgeometry::GetAlpha());
1246 Double_t xpos = t.GetX();
1247 Double_t dir = (xpos<xToGo) ? 1.0 : -1.0;
1249 while (((xToGo-xpos)*dir) > kEpsilon) {
1251 Double_t step = dir * TMath::Min(TMath::Abs(xToGo-xpos),maxStep);
1259 // Starting global position
1263 if (!t.GetProlongation(x,y,z)) {
1264 return 0; // No prolongation
1267 xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha());
1268 xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha());
1271 AliTracker::MeanMaterialBudget(xyz0,xyz1,param);
1272 if (!t.PropagateTo(x,param[1],param[0]*param[4])) {
1284 //_____________________________________________________________________________
1285 Int_t AliTRDtracker::LoadClusters(TTree *cTree)
1288 // Fills clusters into TRD tracking_sectors
1289 // Note that the numbering scheme for the TRD tracking_sectors
1290 // differs from that of TRD sectors
1293 if (ReadClusters(fClusters,cTree)) {
1294 AliError("Problem with reading the clusters !");
1297 Int_t ncl = fClusters->GetEntriesFast();
1299 AliInfo(Form("Sorting %d clusters",ncl));
1302 for (Int_t ichamber = 0; ichamber < 5; ichamber++) {
1303 for (Int_t isector = 0; isector < 18; isector++) {
1304 fHoles[ichamber][isector] = kTRUE;
1310 AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(ncl);
1311 Int_t detector = c->GetDetector();
1312 Int_t localTimeBin = c->GetLocalTimeBin();
1313 Int_t sector = fGeom->GetSector(detector);
1314 Int_t plane = fGeom->GetPlane(detector);
1315 Int_t trackingSector = sector;
1317 if (c->GetQ() > 10) {
1318 Int_t chamber = fGeom->GetChamber(detector);
1319 fHoles[chamber][trackingSector] = kFALSE;
1322 Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(plane,localTimeBin);
1326 Int_t layer = fTrSec[trackingSector]->GetLayerNumber(gtb);
1330 fHXCl->Fill(c->GetX());
1332 fTrSec[trackingSector]->GetLayer(layer)->SetX(c->GetX());
1333 fTrSec[trackingSector]->GetLayer(layer)->InsertCluster(c,index);
1341 //_____________________________________________________________________________
1342 void AliTRDtracker::UnloadClusters()
1345 // Clears the arrays of clusters and tracks. Resets sectors and timebins
1351 nentr = fClusters->GetEntriesFast();
1352 for (i = 0; i < nentr; i++) {
1353 delete fClusters->RemoveAt(i);
1357 nentr = fSeeds->GetEntriesFast();
1358 for (i = 0; i < nentr; i++) {
1359 delete fSeeds->RemoveAt(i);
1362 nentr = fTracks->GetEntriesFast();
1363 for (i = 0; i < nentr; i++) {
1364 delete fTracks->RemoveAt(i);
1367 Int_t nsec = AliTRDgeometry::kNsect;
1368 for (i = 0; i < nsec; i++) {
1369 for(Int_t pl = 0; pl < fTrSec[i]->GetNumberOfLayers(); pl++) {
1370 fTrSec[i]->GetLayer(pl)->Clear();
1376 //_____________________________________________________________________________
1377 void AliTRDtracker::MakeSeedsMI(Int_t /*inner*/, Int_t /*outer*/, AliESDEvent *esd)
1380 // Creates seeds using clusters between position inner plane and outer plane
1383 const Double_t kMaxTheta = 1.0;
1384 const Double_t kMaxPhi = 2.0;
1386 const Double_t kRoad0y = 6.0; // Road for middle cluster
1387 const Double_t kRoad0z = 8.5; // Road for middle cluster
1389 const Double_t kRoad1y = 2.0; // Road in y for seeded cluster
1390 const Double_t kRoad1z = 20.0; // Road in z for seeded cluster
1392 const Double_t kRoad2y = 3.0; // Road in y for extrapolated cluster
1393 const Double_t kRoad2z = 20.0; // Road in z for extrapolated cluster
1394 const Int_t kMaxSeed = 3000;
1396 Int_t maxSec = AliTRDgeometry::kNsect;
1398 // Linear fitters in planes
1399 TLinearFitter fitterTC(2,"hyp2"); // Fitting with tilting pads - kz fixed - kz= Z/x, + vertex const
1400 TLinearFitter fitterT2(4,"hyp4"); // Fitting with tilting pads - kz not fixed
1401 fitterTC.StoreData(kTRUE);
1402 fitterT2.StoreData(kTRUE);
1403 AliRieman rieman(1000); // Rieman fitter
1404 AliRieman rieman2(1000); // Rieman fitter
1406 // Find the maximal and minimal layer for the planes
1408 AliTRDpropagationLayer *reflayers[6];
1409 for (Int_t i = 0; i < 6; i++) {
1410 layers[i][0] = 10000;
1413 for (Int_t ns = 0; ns < maxSec; ns++) {
1414 for (Int_t ilayer = 0; ilayer < fTrSec[ns]->GetNumberOfLayers(); ilayer++) {
1415 AliTRDpropagationLayer &layer = *(fTrSec[ns]->GetLayer(ilayer));
1419 Int_t det = layer[0]->GetDetector();
1420 Int_t plane = fGeom->GetPlane(det);
1421 if (ilayer < layers[plane][0]) {
1422 layers[plane][0] = ilayer;
1424 if (ilayer > layers[plane][1]) {
1425 layers[plane][1] = ilayer;
1430 AliTRDpadPlane *padPlane = fGeom->GetPadPlane(0,0);
1431 Double_t h01 = TMath::Tan(-TMath::Pi() / 180.0 * padPlane->GetTiltingAngle());
1432 Double_t hL[6]; // Tilting angle
1433 Double_t xcl[6]; // X - position of reference cluster
1434 Double_t ycl[6]; // Y - position of reference cluster
1435 Double_t zcl[6]; // Z - position of reference cluster
1437 AliTRDcluster *cl[6] = { 0, 0, 0, 0, 0, 0 }; // Seeding clusters
1438 Float_t padlength[6] = { 10.0, 10.0, 10.0, 10.0, 10.0, 10.0 }; // Current pad-length
1440 Double_t chi2R = 0.0;
1441 Double_t chi2Z = 0.0;
1442 Double_t chi2RF = 0.0;
1443 Double_t chi2ZF = 0.0;
1445 Int_t nclusters; // Total number of clusters
1446 for (Int_t i = 0; i < 6; i++) {
1454 AliTRDseed *pseed = new AliTRDseed[kMaxSeed*6];
1455 AliTRDseed *seed[kMaxSeed];
1456 for (Int_t iseed = 0; iseed < kMaxSeed; iseed++) {
1457 seed[iseed]= &pseed[iseed*6];
1459 AliTRDseed *cseed = seed[0];
1461 Double_t seedquality[kMaxSeed];
1462 Double_t seedquality2[kMaxSeed];
1463 Double_t seedparams[kMaxSeed][7];
1464 Int_t seedlayer[kMaxSeed];
1465 Int_t registered = 0;
1466 Int_t sort[kMaxSeed];
1471 for (Int_t ns = 0; ns < maxSec; ns++) { // Loop over sectors
1472 //for (Int_t ns = 0; ns < 5; ns++) { // Loop over sectors
1474 registered = 0; // Reset registerd seed counter
1475 cseed = seed[registered];
1478 for (Int_t sLayer = 2; sLayer >= 0; sLayer--) {
1479 //for (Int_t dseed = 5; dseed < 15; dseed += 3) {
1482 Int_t dseed = 5 + Int_t(iter) * 3;
1484 // Initialize seeding layers
1485 for (Int_t ilayer = 0; ilayer < 6; ilayer++) {
1486 reflayers[ilayer] = fTrSec[ns]->GetLayer(layers[ilayer][1]-dseed);
1487 xcl[ilayer] = reflayers[ilayer]->GetX();
1490 Double_t xref = (xcl[sLayer+1] + xcl[sLayer+2]) * 0.5;
1491 AliTRDpropagationLayer &layer0 = *reflayers[sLayer+0];
1492 AliTRDpropagationLayer &layer1 = *reflayers[sLayer+1];
1493 AliTRDpropagationLayer &layer2 = *reflayers[sLayer+2];
1494 AliTRDpropagationLayer &layer3 = *reflayers[sLayer+3];
1496 Int_t maxn3 = layer3;
1497 for (Int_t icl3 = 0; icl3 < maxn3; icl3++) {
1499 AliTRDcluster *cl3 = layer3[icl3];
1503 padlength[sLayer+3] = TMath::Sqrt(cl3->GetSigmaZ2() * 12.0);
1504 ycl[sLayer+3] = cl3->GetY();
1505 zcl[sLayer+3] = cl3->GetZ();
1506 Float_t yymin0 = ycl[sLayer+3] - 1.0 - kMaxPhi * (xcl[sLayer+3]-xcl[sLayer+0]);
1507 Float_t yymax0 = ycl[sLayer+3] + 1.0 + kMaxPhi * (xcl[sLayer+3]-xcl[sLayer+0]);
1508 Int_t maxn0 = layer0;
1510 for (Int_t icl0 = layer0.Find(yymin0); icl0 < maxn0; icl0++) {
1512 AliTRDcluster *cl0 = layer0[icl0];
1516 if (cl3->IsUsed() && cl0->IsUsed()) {
1519 ycl[sLayer+0] = cl0->GetY();
1520 zcl[sLayer+0] = cl0->GetZ();
1521 if (ycl[sLayer+0] > yymax0) {
1524 Double_t tanphi = (ycl[sLayer+3]-ycl[sLayer+0]) / (xcl[sLayer+3]-xcl[sLayer+0]);
1525 if (TMath::Abs(tanphi) > kMaxPhi) {
1528 Double_t tantheta = (zcl[sLayer+3]-zcl[sLayer+0]) / (xcl[sLayer+3]-xcl[sLayer+0]);
1529 if (TMath::Abs(tantheta) > kMaxTheta) {
1532 padlength[sLayer+0] = TMath::Sqrt(cl0->GetSigmaZ2() * 12.0);
1534 // Expected position in 1 layer
1535 Double_t y1exp = ycl[sLayer+0] + (tanphi) * (xcl[sLayer+1]-xcl[sLayer+0]);
1536 Double_t z1exp = zcl[sLayer+0] + (tantheta) * (xcl[sLayer+1]-xcl[sLayer+0]);
1537 Float_t yymin1 = y1exp - kRoad0y - tanphi;
1538 Float_t yymax1 = y1exp + kRoad0y + tanphi;
1539 Int_t maxn1 = layer1;
1541 for (Int_t icl1 = layer1.Find(yymin1); icl1 < maxn1; icl1++) {
1543 AliTRDcluster *cl1 = layer1[icl1];
1548 if (cl3->IsUsed()) nusedCl++;
1549 if (cl0->IsUsed()) nusedCl++;
1550 if (cl1->IsUsed()) nusedCl++;
1554 ycl[sLayer+1] = cl1->GetY();
1555 zcl[sLayer+1] = cl1->GetZ();
1556 if (ycl[sLayer+1] > yymax1) {
1559 if (TMath::Abs(ycl[sLayer+1]-y1exp) > kRoad0y+tanphi) {
1562 if (TMath::Abs(zcl[sLayer+1]-z1exp) > kRoad0z) {
1565 padlength[sLayer+1] = TMath::Sqrt(cl1->GetSigmaZ2() * 12.0);
1567 Double_t y2exp = ycl[sLayer+0]+(tanphi) * (xcl[sLayer+2]-xcl[sLayer+0]) + (ycl[sLayer+1]-y1exp);
1568 Double_t z2exp = zcl[sLayer+0]+(tantheta) * (xcl[sLayer+2]-xcl[sLayer+0]);
1569 Int_t index2 = layer2.FindNearestCluster(y2exp,z2exp,kRoad1y,kRoad1z);
1573 AliTRDcluster *cl2 = (AliTRDcluster *) GetCluster(index2);
1574 padlength[sLayer+2] = TMath::Sqrt(cl2->GetSigmaZ2() * 12.0);
1575 ycl[sLayer+2] = cl2->GetY();
1576 zcl[sLayer+2] = cl2->GetZ();
1577 if (TMath::Abs(cl2->GetZ()-z2exp) > kRoad0z) {
1582 rieman.AddPoint(xcl[sLayer+0],ycl[sLayer+0],zcl[sLayer+0],1,10);
1583 rieman.AddPoint(xcl[sLayer+1],ycl[sLayer+1],zcl[sLayer+1],1,10);
1584 rieman.AddPoint(xcl[sLayer+3],ycl[sLayer+3],zcl[sLayer+3],1,10);
1585 rieman.AddPoint(xcl[sLayer+2],ycl[sLayer+2],zcl[sLayer+2],1,10);
1589 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
1590 cseed[iLayer].Reset();
1595 for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
1596 cseed[sLayer+iLayer].SetZref(0,rieman.GetZat(xcl[sLayer+iLayer]));
1597 chi2Z += (cseed[sLayer+iLayer].GetZref(0)- zcl[sLayer+iLayer])
1598 * (cseed[sLayer+iLayer].GetZref(0)- zcl[sLayer+iLayer]);
1599 cseed[sLayer+iLayer].SetZref(1,rieman.GetDZat(xcl[sLayer+iLayer]));
1600 cseed[sLayer+iLayer].SetYref(0,rieman.GetYat(xcl[sLayer+iLayer]));
1601 chi2R += (cseed[sLayer+iLayer].GetYref(0)- ycl[sLayer+iLayer])
1602 * (cseed[sLayer+iLayer].GetYref(0)- ycl[sLayer+iLayer]);
1603 cseed[sLayer+iLayer].SetYref(1,rieman.GetDYat(xcl[sLayer+iLayer]));
1605 if (TMath::Sqrt(chi2R) > 1.0/iter) {
1608 if (TMath::Sqrt(chi2Z) > 7.0/iter) {
1612 Float_t minmax[2] = { -100.0, 100.0 };
1613 for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
1614 Float_t max = zcl[sLayer+iLayer]+padlength[sLayer+iLayer] * 0.5
1615 + 1.0 - cseed[sLayer+iLayer].GetZref(0);
1616 if (max < minmax[1]) {
1619 Float_t min = zcl[sLayer+iLayer]-padlength[sLayer+iLayer] * 0.5
1620 - 1.0 - cseed[sLayer+iLayer].GetZref(0);
1621 if (min > minmax[0]) {
1626 Bool_t isFake = kFALSE;
1627 if (cl0->GetLabel(0) != cl3->GetLabel(0)) {
1630 if (cl1->GetLabel(0) != cl3->GetLabel(0)) {
1633 if (cl2->GetLabel(0) != cl3->GetLabel(0)) {
1637 if (AliTRDReconstructor::StreamLevel() > 0) {
1638 if ((!isFake) || ((icl3%10) == 0)) { // Debugging print
1639 TTreeSRedirector &cstream = *fDebugStreamer;
1641 << "isFake=" << isFake
1647 << "X0=" << xcl[sLayer+0]
1648 << "X1=" << xcl[sLayer+1]
1649 << "X2=" << xcl[sLayer+2]
1650 << "X3=" << xcl[sLayer+3]
1651 << "Y2exp=" << y2exp
1652 << "Z2exp=" << z2exp
1653 << "Chi2R=" << chi2R
1654 << "Chi2Z=" << chi2Z
1655 << "Seed0.=" << &cseed[sLayer+0]
1656 << "Seed1.=" << &cseed[sLayer+1]
1657 << "Seed2.=" << &cseed[sLayer+2]
1658 << "Seed3.=" << &cseed[sLayer+3]
1659 << "Zmin=" << minmax[0]
1660 << "Zmax=" << minmax[1]
1665 ////////////////////////////////////////////////////////////////////////////////////
1669 ////////////////////////////////////////////////////////////////////////////////////
1675 Bool_t isOK = kTRUE;
1677 for (Int_t jLayer = 0; jLayer < 4; jLayer++) {
1679 cseed[sLayer+jLayer].SetTilt(hL[sLayer+jLayer]);
1680 cseed[sLayer+jLayer].SetPadLength(padlength[sLayer+jLayer]);
1681 cseed[sLayer+jLayer].SetX0(xcl[sLayer+jLayer]);
1683 for (Int_t iter = 0; iter < 2; iter++) {
1686 // In iteration 0 we try only one pad-row
1687 // If quality not sufficient we try 2 pad-rows - about 5% of tracks cross 2 pad-rows
1689 AliTRDseed tseed = cseed[sLayer+jLayer];
1690 Float_t roadz = padlength[sLayer+jLayer] * 0.5;
1692 roadz = padlength[sLayer+jLayer];
1695 Float_t quality = 10000.0;
1697 for (Int_t iTime = 2; iTime < 20; iTime++) {
1699 AliTRDpropagationLayer &layer = *(fTrSec[ns]->GetLayer(layers[sLayer+jLayer][1]-iTime));
1700 Double_t dxlayer = layer.GetX() - xcl[sLayer+jLayer];
1701 Double_t zexp = cl[sLayer+jLayer]->GetZ();
1704 // Try 2 pad-rows in second iteration
1705 zexp = tseed.GetZref(0) + tseed.GetZref(1) * dxlayer;
1706 if (zexp > cl[sLayer+jLayer]->GetZ()) {
1707 zexp = cl[sLayer+jLayer]->GetZ() + padlength[sLayer+jLayer]*0.5;
1709 if (zexp < cl[sLayer+jLayer]->GetZ()) {
1710 zexp = cl[sLayer+jLayer]->GetZ() - padlength[sLayer+jLayer]*0.5;
1714 Double_t yexp = tseed.GetYref(0) + tseed.GetYref(1) * dxlayer;
1715 Int_t index = layer.FindNearestCluster(yexp,zexp,kRoad1y,roadz);
1719 AliTRDcluster *cl = (AliTRDcluster *) GetCluster(index);
1721 tseed.SetIndexes(iTime,index);
1722 tseed.SetClusters(iTime,cl); // Register cluster
1723 tseed.SetX(iTime,dxlayer); // Register cluster
1724 tseed.SetY(iTime,cl->GetY()); // Register cluster
1725 tseed.SetZ(iTime,cl->GetZ()); // Register cluster
1731 // Count the number of clusters and distortions into quality
1732 Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1);
1733 Float_t tquality = (18.0 - tseed.GetN2()) / 2.0 + TMath::Abs(dangle) / 0.1
1734 + TMath::Abs(tseed.GetYfit(0) - tseed.GetYref(0)) / 0.2
1735 + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer];
1736 if ((iter == 0) && tseed.IsOK()) {
1737 cseed[sLayer+jLayer] = tseed;
1743 if (tseed.IsOK() && (tquality < quality)) {
1744 cseed[sLayer+jLayer] = tseed;
1749 if (!cseed[sLayer+jLayer].IsOK()) {
1754 cseed[sLayer+jLayer].CookLabels();
1755 cseed[sLayer+jLayer].UpdateUsed();
1756 nusedCl += cseed[sLayer+jLayer].GetNUsed();
1768 for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
1769 if (cseed[sLayer+iLayer].IsOK()) {
1770 nclusters += cseed[sLayer+iLayer].GetN2();
1776 for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
1777 rieman.AddPoint(xcl[sLayer+iLayer]
1778 ,cseed[sLayer+iLayer].GetYfitR(0)
1779 ,cseed[sLayer+iLayer].GetZProb()
1788 for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
1789 cseed[sLayer+iLayer].SetYref(0,rieman.GetYat(xcl[sLayer+iLayer]));
1790 chi2R += (cseed[sLayer+iLayer].GetYref(0) - cseed[sLayer+iLayer].GetYfitR(0))
1791 * (cseed[sLayer+iLayer].GetYref(0) - cseed[sLayer+iLayer].GetYfitR(0));
1792 cseed[sLayer+iLayer].SetYref(1,rieman.GetDYat(xcl[sLayer+iLayer]));
1793 cseed[sLayer+iLayer].SetZref(0,rieman.GetZat(xcl[sLayer+iLayer]));
1794 chi2Z += (cseed[sLayer+iLayer].GetZref(0) - cseed[sLayer+iLayer].GetMeanz())
1795 * (cseed[sLayer+iLayer].GetZref(0) - cseed[sLayer+iLayer].GetMeanz());
1796 cseed[sLayer+iLayer].SetZref(1,rieman.GetDZat(xcl[sLayer+iLayer]));
1798 Double_t curv = rieman.GetC();
1803 Double_t sumda = TMath::Abs(cseed[sLayer+0].GetYfitR(1) - cseed[sLayer+0].GetYref(1))
1804 + TMath::Abs(cseed[sLayer+1].GetYfitR(1) - cseed[sLayer+1].GetYref(1))
1805 + TMath::Abs(cseed[sLayer+2].GetYfitR(1) - cseed[sLayer+2].GetYref(1))
1806 + TMath::Abs(cseed[sLayer+3].GetYfitR(1) - cseed[sLayer+3].GetYref(1));
1807 Double_t likea = TMath::Exp(-sumda*10.6);
1808 Double_t likechi2 = 0.0000000001;
1810 likechi2 += TMath::Exp(-TMath::Sqrt(chi2R) * 7.73);
1812 Double_t likechi2z = TMath::Exp(-chi2Z * 0.088) / TMath::Exp(-chi2Z * 0.019);
1813 Double_t likeN = TMath::Exp(-(72 - nclusters) * 0.19);
1814 Double_t like = likea * likechi2 * likechi2z * likeN;
1815 Double_t likePrimY = TMath::Exp(-TMath::Abs(cseed[sLayer+0].GetYref(1) - 130.0*curv) * 1.9);
1816 Double_t likePrimZ = TMath::Exp(-TMath::Abs(cseed[sLayer+0].GetZref(1)
1817 - cseed[sLayer+0].GetZref(0) / xcl[sLayer+0]) * 5.9);
1818 Double_t likePrim = TMath::Max(likePrimY*likePrimZ,0.0005);
1820 seedquality[registered] = like;
1821 seedlayer[registered] = sLayer;
1822 if (TMath::Log(0.000000000000001 + like) < -15) {
1825 AliTRDseed seedb[6];
1826 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
1827 seedb[iLayer] = cseed[iLayer];
1830 ////////////////////////////////////////////////////////////////////////////////////
1832 // Full track fit part
1834 ////////////////////////////////////////////////////////////////////////////////////
1841 // Add new layers - avoid long extrapolation
1843 Int_t tLayer[2] = { 0, 0 };
1857 for (Int_t iLayer = 0; iLayer < 2; iLayer++) {
1858 Int_t jLayer = tLayer[iLayer]; // Set tracking layer
1859 cseed[jLayer].Reset();
1860 cseed[jLayer].SetTilt(hL[jLayer]);
1861 cseed[jLayer].SetPadLength(padlength[jLayer]);
1862 cseed[jLayer].SetX0(xcl[jLayer]);
1863 // Get pad length and rough cluster
1864 Int_t indexdummy = reflayers[jLayer]->FindNearestCluster(cseed[jLayer].GetYref(0)
1865 ,cseed[jLayer].GetZref(0)
1868 if (indexdummy <= 0) {
1871 AliTRDcluster *cldummy = (AliTRDcluster *) GetCluster(indexdummy);
1872 padlength[jLayer] = TMath::Sqrt(cldummy->GetSigmaZ2() * 12.0);
1874 AliTRDseed::FitRiemanTilt(cseed,kTRUE);
1876 for (Int_t iLayer = 0; iLayer < 2; iLayer++) {
1878 Int_t jLayer = tLayer[iLayer]; // set tracking layer
1879 if ((jLayer == 0) && !(cseed[1].IsOK())) {
1880 continue; // break not allowed
1882 if ((jLayer == 5) && !(cseed[4].IsOK())) {
1883 continue; // break not allowed
1885 Float_t zexp = cseed[jLayer].GetZref(0);
1886 Double_t zroad = padlength[jLayer] * 0.5 + 1.0;
1888 for (Int_t iter = 0; iter < 2; iter++) {
1890 AliTRDseed tseed = cseed[jLayer];
1891 Float_t quality = 10000.0;
1893 for (Int_t iTime = 2; iTime < 20; iTime++) {
1894 AliTRDpropagationLayer &layer = *(fTrSec[ns]->GetLayer(layers[jLayer][1]-iTime));
1895 Double_t dxlayer = layer.GetX()-xcl[jLayer];
1896 Double_t yexp = tseed.GetYref(0) + tseed.GetYref(1) * dxlayer;
1897 Float_t yroad = kRoad1y;
1898 Int_t index = layer.FindNearestCluster(yexp,zexp,yroad,zroad);
1902 AliTRDcluster *cl = (AliTRDcluster *) GetCluster(index);
1903 tseed.SetIndexes(iTime,index);
1904 tseed.SetClusters(iTime,cl); // Register cluster
1905 tseed.SetX(iTime,dxlayer); // Register cluster
1906 tseed.SetY(iTime,cl->GetY()); // Register cluster
1907 tseed.SetZ(iTime,cl->GetZ()); // Register cluster
1912 Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1);
1913 Float_t tquality = (18.0 - tseed.GetN2())/2.0 + TMath::Abs(dangle) / 0.1
1914 + TMath::Abs(tseed.GetYfit(0) - tseed.GetYref(0)) / 0.2
1915 + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer];
1916 if (tquality < quality) {
1917 cseed[jLayer] = tseed;
1926 if ( cseed[jLayer].IsOK()) {
1927 cseed[jLayer].CookLabels();
1928 cseed[jLayer].UpdateUsed();
1929 nusedf += cseed[jLayer].GetNUsed();
1930 AliTRDseed::FitRiemanTilt(cseed,kTRUE);
1936 AliTRDseed bseed[6];
1937 for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
1938 bseed[jLayer] = cseed[jLayer];
1940 Float_t lastquality = 10000.0;
1941 Float_t lastchi2 = 10000.0;
1942 Float_t chi2 = 1000.0;
1944 for (Int_t iter = 0; iter < 4; iter++) {
1946 // Sort tracklets according "quality", try to "improve" 4 worst
1947 Float_t sumquality = 0.0;
1948 Float_t squality[6];
1949 Int_t sortindexes[6];
1951 for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
1952 if (bseed[jLayer].IsOK()) {
1953 AliTRDseed &tseed = bseed[jLayer];
1954 Double_t zcor = tseed.GetTilt() * (tseed.GetZProb() - tseed.GetZref(0));
1955 Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1);
1956 Float_t tquality = (18.0 - tseed.GetN2()) / 2.0 + TMath::Abs(dangle) / 0.1
1957 + TMath::Abs(tseed.GetYfit(0) - (tseed.GetYref(0) - zcor)) / 0.2
1958 + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer];
1959 squality[jLayer] = tquality;
1962 squality[jLayer] = -1.0;
1964 sumquality +=squality[jLayer];
1967 if ((sumquality >= lastquality) ||
1968 (chi2 > lastchi2)) {
1971 lastquality = sumquality;
1974 for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
1975 cseed[jLayer] = bseed[jLayer];
1978 TMath::Sort(6,squality,sortindexes,kFALSE);
1980 for (Int_t jLayer = 5; jLayer > 1; jLayer--) {
1982 Int_t bLayer = sortindexes[jLayer];
1983 AliTRDseed tseed = bseed[bLayer];
1985 for (Int_t iTime = 2; iTime < 20; iTime++) {
1987 AliTRDpropagationLayer &layer = *(fTrSec[ns]->GetLayer(layers[bLayer][1]-iTime));
1988 Double_t dxlayer = layer.GetX() - xcl[bLayer];
1989 Double_t zexp = tseed.GetZref(0);
1990 Double_t zcor = tseed.GetTilt() * (tseed.GetZProb() - tseed.GetZref(0));
1991 Float_t roadz = padlength[bLayer] + 1;
1992 if (TMath::Abs(tseed.GetZProb() - zexp) > 0.5*padlength[bLayer]) {
1993 roadz = padlength[bLayer] * 0.5;
1995 if (tseed.GetZfit(1)*tseed.GetZref(1) < 0.0) {
1996 roadz = padlength[bLayer] * 0.5;
1998 if (TMath::Abs(tseed.GetZProb() - zexp) < 0.1*padlength[bLayer]) {
1999 zexp = tseed.GetZProb();
2000 roadz = padlength[bLayer] * 0.5;
2003 Double_t yexp = tseed.GetYref(0) + tseed.GetYref(1) * dxlayer - zcor;
2004 Int_t index = layer.FindNearestCluster(yexp,zexp,kRoad1y,roadz);
2008 AliTRDcluster *cl = (AliTRDcluster *) GetCluster(index);
2010 tseed.SetIndexes(iTime,index);
2011 tseed.SetClusters(iTime,cl); // Register cluster
2012 tseed.SetX(iTime,dxlayer); // Register cluster
2013 tseed.SetY(iTime,cl->GetY()); // Register cluster
2014 tseed.SetZ(iTime,cl->GetZ()); // Register cluster
2020 Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1);
2021 Double_t zcor = tseed.GetTilt() * (tseed.GetZProb() - tseed.GetZref(0));
2022 Float_t tquality = (18.0 - tseed.GetN2()) / 2.0
2023 + TMath::Abs(dangle) / 0.1
2024 + TMath::Abs(tseed.GetYfit(0) - (tseed.GetYref(0) - zcor)) / 0.2
2025 + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer];
2026 if (tquality<squality[bLayer]) {
2027 bseed[bLayer] = tseed;
2033 chi2 = AliTRDseed::FitRiemanTilt(bseed,kTRUE);
2040 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2041 if (TMath::Abs(cseed[iLayer].GetYref(0) / cseed[iLayer].GetX0()) < 0.15) {
2044 if (cseed[iLayer].IsOK()) {
2045 nclusters += cseed[iLayer].GetN2();
2053 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2054 if (cseed[iLayer].IsOK()) {
2055 rieman.AddPoint(xcl[iLayer]
2056 ,cseed[iLayer].GetYfitR(0)
2057 ,cseed[iLayer].GetZProb()
2066 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2067 if (cseed[iLayer].IsOK()) {
2068 cseed[iLayer].SetYref(0,rieman.GetYat(xcl[iLayer]));
2069 chi2RF += (cseed[iLayer].GetYref(0) - cseed[iLayer].GetYfitR(0))
2070 * (cseed[iLayer].GetYref(0) - cseed[iLayer].GetYfitR(0));
2071 cseed[iLayer].SetYref(1,rieman.GetDYat(xcl[iLayer]));
2072 cseed[iLayer].SetZref(0,rieman.GetZat(xcl[iLayer]));
2073 chi2ZF += (cseed[iLayer].GetZref(0) - cseed[iLayer].GetMeanz())
2074 * (cseed[iLayer].GetZref(0) - cseed[iLayer].GetMeanz());
2075 cseed[iLayer].SetZref(1,rieman.GetDZat(xcl[iLayer]));
2078 chi2RF /= TMath::Max((nlayers - 3.0),1.0);
2079 chi2ZF /= TMath::Max((nlayers - 3.0),1.0);
2080 curv = rieman.GetC();
2082 Double_t xref2 = (xcl[2] + xcl[3]) * 0.5; // Middle of the chamber
2083 Double_t dzmf = rieman.GetDZat(xref2);
2084 Double_t zmf = rieman.GetZat(xref2);
2090 fitterTC.ClearPoints();
2091 fitterT2.ClearPoints();
2094 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2096 if (!cseed[iLayer].IsOK()) {
2100 for (Int_t itime = 0; itime < 25; itime++) {
2102 if (!cseed[iLayer].IsUsable(itime)) {
2105 // X relative to the middle chamber
2106 Double_t x = cseed[iLayer].GetX(itime) + cseed[iLayer].GetX0() - xref2;
2107 Double_t y = cseed[iLayer].GetY(itime);
2108 Double_t z = cseed[iLayer].GetZ(itime);
2109 // ExB correction to the correction
2113 Double_t x2 = cseed[iLayer].GetX(itime) + cseed[iLayer].GetX0();
2114 Double_t t = 1.0 / (x2*x2 + y*y);
2116 uvt[0] = 2.0 * x2 * uvt[1]; // u
2117 uvt[2] = 2.0 * hL[iLayer] * uvt[1];
2118 uvt[3] = 2.0 * hL[iLayer] * x * uvt[1];
2119 uvt[4] = 2.0 * (y + hL[iLayer]*z) * uvt[1];
2120 Double_t error = 2.0 * 0.2 * uvt[1];
2121 fitterT2.AddPoint(uvt,uvt[4],error);
2124 // Constrained rieman
2126 z = cseed[iLayer].GetZ(itime);
2127 uvt[0] = 2.0 * x2 * t; // u
2128 uvt[1] = 2.0 * hL[iLayer] * x2 * uvt[1];
2129 uvt[2] = 2.0 * (y + hL[iLayer] * (z - GetZ())) * t;
2130 fitterTC.AddPoint(uvt,uvt[2],error);
2131 rieman2.AddPoint(x2,y,z,1,10);
2141 Double_t rpolz0 = fitterT2.GetParameter(3);
2142 Double_t rpolz1 = fitterT2.GetParameter(4);
2145 // Linear fitter - not possible to make boundaries
2146 // Do not accept non possible z and dzdx combinations
2148 Bool_t acceptablez = kTRUE;
2149 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2150 if (cseed[iLayer].IsOK()) {
2151 Double_t zT2 = rpolz0 + rpolz1 * (xcl[iLayer] - xref2);
2152 if (TMath::Abs(cseed[iLayer].GetZProb() - zT2) > padlength[iLayer] * 0.5 + 1.0) {
2153 acceptablez = kFALSE;
2158 fitterT2.FixParameter(3,zmf);
2159 fitterT2.FixParameter(4,dzmf);
2161 fitterT2.ReleaseParameter(3);
2162 fitterT2.ReleaseParameter(4);
2163 rpolz0 = fitterT2.GetParameter(3);
2164 rpolz1 = fitterT2.GetParameter(4);
2167 Double_t chi2TR = fitterT2.GetChisquare() / Float_t(npointsT);
2168 Double_t chi2TC = fitterTC.GetChisquare() / Float_t(npointsT);
2169 Double_t polz1c = fitterTC.GetParameter(2);
2170 Double_t polz0c = polz1c * xref2;
2171 Double_t aC = fitterTC.GetParameter(0);
2172 Double_t bC = fitterTC.GetParameter(1);
2173 Double_t cC = aC / TMath::Sqrt(bC * bC + 1.0); // Curvature
2174 Double_t aR = fitterT2.GetParameter(0);
2175 Double_t bR = fitterT2.GetParameter(1);
2176 Double_t dR = fitterT2.GetParameter(2);
2177 Double_t cR = 1.0 + bR*bR - dR*aR;
2180 dca = -dR / (TMath::Sqrt(1.0 + bR*bR - dR*aR) + TMath::Sqrt(1.0 + bR*bR));
2181 cR = aR / TMath::Sqrt(cR);
2184 Double_t chi2ZT2 = 0.0;
2185 Double_t chi2ZTC = 0.0;
2186 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2187 if (cseed[iLayer].IsOK()) {
2188 Double_t zT2 = rpolz0 + rpolz1 * (xcl[iLayer] - xref2);
2189 Double_t zTC = polz0c + polz1c * (xcl[iLayer] - xref2);
2190 chi2ZT2 += TMath::Abs(cseed[iLayer].GetMeanz() - zT2);
2191 chi2ZTC += TMath::Abs(cseed[iLayer].GetMeanz() - zTC);
2194 chi2ZT2 /= TMath::Max((nlayers - 3.0),1.0);
2195 chi2ZTC /= TMath::Max((nlayers - 3.0),1.0);
2197 AliTRDseed::FitRiemanTilt(cseed,kTRUE);
2198 Float_t sumdaf = 0.0;
2199 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2200 if (cseed[iLayer].IsOK()) {
2201 sumdaf += TMath::Abs((cseed[iLayer].GetYfit(1) - cseed[iLayer].GetYref(1))
2202 / cseed[iLayer].GetSigmaY2());
2205 sumdaf /= Float_t (nlayers - 2.0);
2208 // Likelihoods for full track
2210 Double_t likezf = TMath::Exp(-chi2ZF * 0.14);
2211 Double_t likechi2C = TMath::Exp(-chi2TC * 0.677);
2212 Double_t likechi2TR = TMath::Exp(-chi2TR * 0.78);
2213 Double_t likeaf = TMath::Exp(-sumdaf * 3.23);
2214 seedquality2[registered] = likezf * likechi2TR * likeaf;
2216 // Still needed ????
2217 // Bool_t isGold = kFALSE;
2219 // if (nlayers == 6 && TMath::Log(0.000000001+seedquality2[index])<-5.) isGold =kTRUE; // gold
2220 // if (nlayers == findable && TMath::Log(0.000000001+seedquality2[index])<-4.) isGold =kTRUE; // gold
2221 // if (isGold &&nusedf<10){
2222 // for (Int_t jLayer=0;jLayer<6;jLayer++){
2223 // if ( seed[index][jLayer].IsOK()&&TMath::Abs(seed[index][jLayer].fYfit[1]-seed[index][jLayer].fYfit[1])<0.1)
2224 // seed[index][jLayer].UseClusters(); //sign gold
2229 if (!cseed[0].IsOK()) {
2231 if (!cseed[1].IsOK()) {
2235 seedparams[registered][0] = cseed[index0].GetX0();
2236 seedparams[registered][1] = cseed[index0].GetYref(0);
2237 seedparams[registered][2] = cseed[index0].GetZref(0);
2238 seedparams[registered][5] = cR;
2239 seedparams[registered][3] = cseed[index0].GetX0() * cR - TMath::Sin(TMath::ATan(cseed[0].GetYref(1)));
2240 seedparams[registered][4] = cseed[index0].GetZref(1)
2241 / TMath::Sqrt(1.0 + cseed[index0].GetYref(1) * cseed[index0].GetYref(1));
2242 seedparams[registered][6] = ns;
2247 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2248 if (!cseed[iLayer].IsOK()) {
2251 if (cseed[iLayer].GetLabels(0) >= 0) {
2252 labels[nlab] = cseed[iLayer].GetLabels(0);
2255 if (cseed[iLayer].GetLabels(1) >= 0) {
2256 labels[nlab] = cseed[iLayer].GetLabels(1);
2260 Freq(nlab,labels,outlab,kFALSE);
2261 Int_t label = outlab[0];
2262 Int_t frequency = outlab[1];
2263 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2264 cseed[iLayer].SetFreq(frequency);
2265 cseed[iLayer].SetC(cR);
2266 cseed[iLayer].SetCC(cC);
2267 cseed[iLayer].SetChi2(chi2TR);
2268 cseed[iLayer].SetChi2Z(chi2ZF);
2272 if (1 || (!isFake)) {
2273 Float_t zvertex = GetZ();
2274 TTreeSRedirector &cstream = *fDebugStreamer;
2275 if (AliTRDReconstructor::StreamLevel() > 0) {
2277 << "isFake=" << isFake
2278 << "Vertex=" << zvertex
2279 << "Rieman2.=" << &rieman2
2280 << "Rieman.=" << &rieman
2288 << "Chi2R=" << chi2R
2289 << "Chi2Z=" << chi2Z
2290 << "Chi2RF=" << chi2RF // Chi2 of trackletes on full track
2291 << "Chi2ZF=" << chi2ZF // Chi2 z on tracklets on full track
2292 << "Chi2ZT2=" << chi2ZT2 // Chi2 z on tracklets on full track - rieman tilt
2293 << "Chi2ZTC=" << chi2ZTC // Chi2 z on tracklets on full track - rieman tilt const
2294 << "Chi2TR=" << chi2TR // Chi2 without vertex constrain
2295 << "Chi2TC=" << chi2TC // Chi2 with vertex constrain
2296 << "C=" << curv // Non constrained - no tilt correction
2297 << "DR=" << dR // DR parameter - tilt correction
2298 << "DCA=" << dca // DCA - tilt correction
2299 << "CR=" << cR // Non constrained curvature - tilt correction
2300 << "CC=" << cC // Constrained curvature
2301 << "Polz0=" << polz0c
2302 << "Polz1=" << polz1c
2303 << "RPolz0=" << rpolz0
2304 << "RPolz1=" << rpolz1
2305 << "Ncl=" << nclusters
2306 << "Nlayers=" << nlayers
2307 << "NUsedS=" << nusedCl
2308 << "NUsed=" << nusedf
2309 << "Findable=" << findable
2311 << "LikePrim=" << likePrim
2312 << "Likechi2C=" << likechi2C
2313 << "Likechi2TR=" << likechi2TR
2314 << "Likezf=" << likezf
2315 << "LikeF=" << seedquality2[registered]
2316 << "S0.=" << &cseed[0]
2317 << "S1.=" << &cseed[1]
2318 << "S2.=" << &cseed[2]
2319 << "S3.=" << &cseed[3]
2320 << "S4.=" << &cseed[4]
2321 << "S5.=" << &cseed[5]
2322 << "SB0.=" << &seedb[0]
2323 << "SB1.=" << &seedb[1]
2324 << "SB2.=" << &seedb[2]
2325 << "SB3.=" << &seedb[3]
2326 << "SB4.=" << &seedb[4]
2327 << "SB5.=" << &seedb[5]
2328 << "Label=" << label
2329 << "Freq=" << frequency
2330 << "sLayer=" << sLayer
2335 if (registered<kMaxSeed - 1) {
2337 cseed = seed[registered];
2340 } // End of loop over layer 1
2342 } // End of loop over layer 0
2344 } // End of loop over layer 3
2346 } // End of loop over seeding time bins
2352 TMath::Sort(registered,seedquality2,sort,kTRUE);
2353 Bool_t signedseed[kMaxSeed];
2354 for (Int_t i = 0; i < registered; i++) {
2355 signedseed[i] = kFALSE;
2358 for (Int_t iter = 0; iter < 5; iter++) {
2360 for (Int_t iseed = 0; iseed < registered; iseed++) {
2362 Int_t index = sort[iseed];
2363 if (signedseed[index]) {
2366 Int_t labelsall[1000];
2367 Int_t nlabelsall = 0;
2368 Int_t naccepted = 0;;
2369 Int_t sLayer = seedlayer[index];
2375 for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
2377 if (TMath::Abs(seed[index][jLayer].GetYref(0) / xcl[jLayer]) < 0.15) {
2380 if (seed[index][jLayer].IsOK()) {
2381 seed[index][jLayer].UpdateUsed();
2382 ncl +=seed[index][jLayer].GetN2();
2383 nused +=seed[index][jLayer].GetNUsed();
2386 for (Int_t itime = 0; itime < 25; itime++) {
2387 if (seed[index][jLayer].IsUsable(itime)) {
2389 for (Int_t ilab = 0; ilab < 3; ilab++) {
2390 Int_t tindex = seed[index][jLayer].GetClusters(itime)->GetLabel(ilab);
2392 labelsall[nlabelsall] = tindex;
2410 if (TMath::Log(0.000000001+seedquality2[index]) < -5.0) {
2416 if (nlayers < findable) {
2419 if (TMath::Log(0.000000001+seedquality2[index]) < -4.0) {
2425 if ((nlayers == findable) ||
2429 if (TMath::Log(0.000000001+seedquality2[index]) < -6.0) {
2435 if (TMath::Log(0.000000001+seedquality2[index]) < -5.0) {
2441 if (TMath::Log(0.000000001+seedquality2[index]) - nused/(nlayers-3.0) < -15.0) {
2446 signedseed[index] = kTRUE;
2451 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2452 if (seed[index][iLayer].IsOK()) {
2453 if (seed[index][iLayer].GetLabels(0) >= 0) {
2454 labels[nlab] = seed[index][iLayer].GetLabels(0);
2457 if (seed[index][iLayer].GetLabels(1) >= 0) {
2458 labels[nlab] = seed[index][iLayer].GetLabels(1);
2463 Freq(nlab,labels,outlab,kFALSE);
2464 Int_t label = outlab[0];
2465 Int_t frequency = outlab[1];
2466 Freq(nlabelsall,labelsall,outlab,kFALSE);
2467 Int_t label1 = outlab[0];
2468 Int_t label2 = outlab[2];
2469 Float_t fakeratio = (naccepted - outlab[1]) / Float_t(naccepted);
2470 Float_t ratio = Float_t(nused) / Float_t(ncl);
2472 for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
2473 if ((seed[index][jLayer].IsOK()) &&
2474 (TMath::Abs(seed[index][jLayer].GetYfit(1) - seed[index][jLayer].GetYfit(1)) < 0.2)) {
2475 seed[index][jLayer].UseClusters(); // Sign gold
2480 Int_t eventNrInFile = esd->GetEventNumberInFile(); // This is most likely NOT the event number you'd like to use. It has nothing to do with the 'real' event number.
2481 TTreeSRedirector &cstream = *fDebugStreamer;
2486 AliTRDtrack *track = RegisterSeed(seed[index],seedparams[index]);
2492 AliESDtrack esdtrack;
2493 esdtrack.UpdateTrackParams(track,AliESDtrack::kTRDout);
2494 esdtrack.SetLabel(label);
2495 esd->AddTrack(&esdtrack);
2496 TTreeSRedirector &cstream = *fDebugStreamer;
2497 if (AliTRDReconstructor::StreamLevel() > 0) {
2499 << "EventNrInFile=" << eventNrInFile
2500 << "ESD.=" << &esdtrack
2502 << "trdback.=" << track
2507 if (AliTRDReconstructor::StreamLevel() > 0) {
2510 << "Track.=" << track
2511 << "Like=" << seedquality[index]
2512 << "LikeF=" << seedquality2[index]
2513 << "S0.=" << &seed[index][0]
2514 << "S1.=" << &seed[index][1]
2515 << "S2.=" << &seed[index][2]
2516 << "S3.=" << &seed[index][3]
2517 << "S4.=" << &seed[index][4]
2518 << "S5.=" << &seed[index][5]
2519 << "Label=" << label
2520 << "Label1=" << label1
2521 << "Label2=" << label2
2522 << "FakeRatio=" << fakeratio
2523 << "Freq=" << frequency
2525 << "Nlayers=" << nlayers
2526 << "Findable=" << findable
2527 << "NUsed=" << nused
2528 << "sLayer=" << sLayer
2529 << "EventNrInFile=" << eventNrInFile
2537 } // End of loop over sectors
2543 //_____________________________________________________________________________
2544 Int_t AliTRDtracker::ReadClusters(TObjArray *array, TTree *clusterTree) const
2547 // Reads AliTRDclusters (option >= 0) or AliTRDrecPoints (option < 0)
2548 // from the file. The names of the cluster tree and branches
2549 // should match the ones used in AliTRDclusterizer::WriteClusters()
2552 Int_t nsize = Int_t(clusterTree->GetTotBytes() / (sizeof(AliTRDcluster)));
2553 TObjArray *clusterArray = new TObjArray(nsize+1000);
2555 TBranch *branch = clusterTree->GetBranch("TRDcluster");
2557 AliError("Can't get the branch !");
2560 branch->SetAddress(&clusterArray);
2562 // Loop through all entries in the tree
2563 Int_t nEntries = (Int_t) clusterTree->GetEntries();
2565 AliTRDcluster *c = 0;
2566 for (Int_t iEntry = 0; iEntry < nEntries; iEntry++) {
2569 nbytes += clusterTree->GetEvent(iEntry);
2571 // Get the number of points in the detector
2572 Int_t nCluster = clusterArray->GetEntriesFast();
2574 // Loop through all TRD digits
2575 for (Int_t iCluster = 0; iCluster < nCluster; iCluster++) {
2576 c = (AliTRDcluster *) clusterArray->UncheckedAt(iCluster);
2577 AliTRDcluster *co = c;
2579 clusterArray->RemoveAt(iCluster);
2584 delete clusterArray;
2590 //_____________________________________________________________________________
2591 Bool_t AliTRDtracker::GetTrackPoint(Int_t index, AliTrackPoint &p) const
2594 // Get track space point with index i
2595 // Origin: C.Cheshkov
2598 AliTRDcluster *cl = (AliTRDcluster *) fClusters->UncheckedAt(index);
2599 Int_t idet = cl->GetDetector();
2600 Int_t isector = fGeom->GetSector(idet);
2601 Int_t ichamber = fGeom->GetChamber(idet);
2602 Int_t iplan = fGeom->GetPlane(idet);
2604 local[0] = GetX(isector,iplan,cl->GetLocalTimeBin());
2605 local[1] = cl->GetY();
2606 local[2] = cl->GetZ();
2608 fGeom->RotateBack(idet,local,global);
2609 p.SetXYZ(global[0],global[1],global[2]);
2610 AliGeomManager::ELayerID iLayer = AliGeomManager::kTRD1;
2613 iLayer = AliGeomManager::kTRD1;
2616 iLayer = AliGeomManager::kTRD2;
2619 iLayer = AliGeomManager::kTRD3;
2622 iLayer = AliGeomManager::kTRD4;
2625 iLayer = AliGeomManager::kTRD5;
2628 iLayer = AliGeomManager::kTRD6;
2631 Int_t modId = isector * fGeom->Ncham() + ichamber;
2632 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,modId);
2633 p.SetVolumeID(volid);
2639 //_____________________________________________________________________________
2640 void AliTRDtracker::CookLabel(AliKalmanTrack *pt, Float_t wrong) const
2643 // This cooks a label. Mmmmh, smells good...
2646 Int_t label = 123456789;
2650 Int_t ncl = pt->GetNumberOfClusters();
2652 const Int_t kRange = fTrSec[0]->GetOuterTimeBin() + 1;
2656 Int_t **s = new Int_t* [kRange];
2657 for (i = 0; i < kRange; i++) {
2658 s[i] = new Int_t[2];
2660 for (i = 0; i < kRange; i++) {
2669 for (i = 0; i < ncl; i++) {
2670 index = pt->GetClusterIndex(i);
2671 AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index);
2677 for (i = 0; i < ncl; i++) {
2678 index = pt->GetClusterIndex(i);
2679 AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index);
2680 for (Int_t k = 0; k < 3; k++) {
2681 label = c->GetLabel(k);
2682 labelAdded = kFALSE;
2685 while ((!labelAdded) && (j < kRange)) {
2686 if ((s[j][0] == label) ||
2689 s[j][1] = s[j][1] + 1;
2701 for (i = 0; i < kRange; i++) {
2702 if (s[i][1] > max) {
2708 for (i = 0; i < kRange; i++) {
2714 if ((1.0 - Float_t(max)/ncl) > wrong) {
2718 pt->SetLabel(label);
2722 //_____________________________________________________________________________
2723 void AliTRDtracker::UseClusters(const AliKalmanTrack *t, Int_t from) const
2726 // Use clusters, but don't abuse them!
2729 const Float_t kmaxchi2 = 18;
2730 const Float_t kmincl = 10;
2732 AliTRDtrack *track = (AliTRDtrack *) t;
2734 Int_t ncl = t->GetNumberOfClusters();
2735 for (Int_t i = from; i < ncl; i++) {
2736 Int_t index = t->GetClusterIndex(i);
2737 AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index);
2738 Int_t iplane = fGeom->GetPlane(c->GetDetector());
2739 if (track->GetTracklets(iplane).GetChi2() > kmaxchi2) {
2742 if (track->GetTracklets(iplane).GetN() < kmincl) {
2745 if (!(c->IsUsed())) {
2752 //_____________________________________________________________________________
2753 Double_t AliTRDtracker::ExpectedSigmaY2(Double_t , Double_t , Double_t ) const
2756 // Parametrised "expected" error of the cluster reconstruction in Y
2759 Double_t s = 0.08 * 0.08;
2764 //_____________________________________________________________________________
2765 Double_t AliTRDtracker::ExpectedSigmaZ2(Double_t , Double_t ) const
2768 // Parametrised "expected" error of the cluster reconstruction in Z
2771 Double_t s = 9.0 * 9.0 / 12.0;
2776 //_____________________________________________________________________________
2777 Double_t AliTRDtracker::GetX(Int_t sector, Int_t plane, Int_t localTB) const
2780 // Returns radial position which corresponds to time bin <localTB>
2781 // in tracking sector <sector> and plane <plane>
2784 Int_t index = fTrSec[sector]->CookTimeBinIndex(plane, localTB);
2785 Int_t pl = fTrSec[sector]->GetLayerNumber(index);
2787 return fTrSec[sector]->GetLayer(pl)->GetX();
2791 //_____________________________________________________________________________
2792 AliTRDtracker::AliTRDpropagationLayer
2793 ::AliTRDpropagationLayer(Double_t x, Double_t dx, Double_t rho
2794 , Double_t radLength, Int_t tbIndex, Int_t plane)
2803 ,fTimeBinIndex(tbIndex)
2816 // AliTRDpropagationLayer constructor
2819 for (Int_t i = 0; i < (Int_t) kZones; i++) {
2824 if (fTimeBinIndex >= 0) {
2825 fClusters = new AliTRDcluster*[kMaxClusterPerTimeBin];
2826 fIndex = new UInt_t[kMaxClusterPerTimeBin];
2829 for (Int_t i = 0; i < 5; i++) {
2830 fIsHole[i] = kFALSE;
2835 //_____________________________________________________________________________
2836 void AliTRDtracker::AliTRDpropagationLayer
2837 ::SetHole(Double_t Zmax, Double_t Ymax, Double_t rho
2838 , Double_t radLength, Double_t Yc, Double_t Zc)
2841 // Sets hole in the layer
2850 fHoleX0 = radLength;
2854 //_____________________________________________________________________________
2855 AliTRDtracker::AliTRDtrackingSector
2856 ::AliTRDtrackingSector(AliTRDgeometry *geo, Int_t gs)
2862 // AliTRDtrackingSector Constructor
2865 AliTRDpadPlane *padPlane = 0;
2866 AliTRDpropagationLayer *ppl = 0;
2868 // Get holes description from geometry
2869 Bool_t holes[AliTRDgeometry::kNcham];
2870 for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) {
2871 holes[icham] = fGeom->IsHole(0,icham,gs);
2874 for (UInt_t i = 0; i < kMaxTimeBinIndex; i++) {
2875 fTimeBinIndex[i] = -1;
2883 // Add layers for each of the planes
2884 Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region
2885 //Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region
2887 const Int_t kNchambers = AliTRDgeometry::Ncham();
2890 Double_t ymaxsensitive = 0;
2891 Double_t *zc = new Double_t[kNchambers];
2892 Double_t *zmax = new Double_t[kNchambers];
2893 Double_t *zmaxsensitive = new Double_t[kNchambers];
2895 for (Int_t plane = 0; plane < AliTRDgeometry::Nplan(); plane++) {
2897 ymax = fGeom->GetChamberWidth(plane) / 2.0;
2898 padPlane = fGeom->GetPadPlane(plane,0);
2899 ymaxsensitive = (padPlane->GetColSize(1) * padPlane->GetNcols() - 4.0) / 2.0;
2901 for (Int_t ch = 0; ch < kNchambers; ch++) {
2902 zmax[ch] = fGeom->GetChamberLength(plane,ch) / 2.0;
2903 Float_t pad = padPlane->GetRowSize(1);
2904 Float_t row0 = fGeom->GetRow0(plane,ch,0);
2905 Int_t nPads = fGeom->GetRowMax(plane,ch,0);
2906 zmaxsensitive[ch] = Float_t(nPads) * pad / 2.0;
2907 zc[ch] = -(pad * nPads) / 2.0 + row0;
2910 dx = AliTRDcalibDB::Instance()->GetVdrift(0,0,0)
2911 / AliTRDCommonParam::Instance()->GetSamplingFrequency();
2912 rho = 0.00295 * 0.85; //????
2915 Double_t x0 = (Double_t) AliTRDgeometry::GetTime0(plane);
2916 //Double_t xbottom = x0 - dxDrift;
2917 //Double_t xtop = x0 + dxAmp;
2919 Int_t nTimeBins = AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
2920 for (Int_t iTime = 0; iTime < nTimeBins; iTime++) {
2922 Double_t xlayer = iTime * dx - dxAmp;
2923 //if (xlayer<0) xlayer = dxAmp / 2.0;
2926 tbIndex = CookTimeBinIndex(plane,iTime);
2927 ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex,plane);
2928 ppl->SetYmax(ymax,ymaxsensitive);
2929 ppl->SetZ(zc,zmax,zmaxsensitive);
2930 ppl->SetHoles(holes);
2941 delete [] zmaxsensitive;
2945 //_____________________________________________________________________________
2946 AliTRDtracker::AliTRDtrackingSector
2947 ::AliTRDtrackingSector(const AliTRDtrackingSector &/*t*/)
2958 //_____________________________________________________________________________
2959 Int_t AliTRDtracker::AliTRDtrackingSector
2960 ::CookTimeBinIndex(Int_t plane, Int_t localTB) const
2963 // depending on the digitization parameters calculates "global"
2964 // time bin index for timebin <localTB> in plane <plane>
2968 Int_t tbPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
2969 Int_t gtb = (plane+1) * tbPerPlane - localTB - 1;
2981 //_____________________________________________________________________________
2982 void AliTRDtracker::AliTRDtrackingSector
2983 ::MapTimeBinLayers()
2986 // For all sensitive time bins sets corresponding layer index
2987 // in the array fTimeBins
2992 for (Int_t i = 0; i < fN; i++) {
2994 index = fLayers[i]->GetTimeBinIndex();
2999 if (index >= (Int_t) kMaxTimeBinIndex) {
3000 //AliWarning(Form("Index %d exceeds allowed maximum of %d!\n"
3001 // ,index,kMaxTimeBinIndex-1));
3005 fTimeBinIndex[index] = i;
3011 //_____________________________________________________________________________
3012 Int_t AliTRDtracker::AliTRDtrackingSector
3013 ::GetLayerNumber(Double_t x) const
3016 // Returns the number of time bin which in radial position is closest to <x>
3019 if (x >= fLayers[fN-1]->GetX()) {
3022 if (x <= fLayers[ 0]->GetX()) {
3028 Int_t m = (b + e) / 2;
3030 for ( ; b < e; m = (b + e) / 2) {
3031 if (x > fLayers[m]->GetX()) {
3039 if (TMath::Abs(x - fLayers[m]->GetX()) > TMath::Abs(x - fLayers[m+1]->GetX())) {
3048 //_____________________________________________________________________________
3049 Int_t AliTRDtracker::AliTRDtrackingSector
3050 ::GetInnerTimeBin() const
3053 // Returns number of the innermost SENSITIVE propagation layer
3056 return GetLayerNumber(0);
3060 //_____________________________________________________________________________
3061 Int_t AliTRDtracker::AliTRDtrackingSector
3062 ::GetOuterTimeBin() const
3065 // Returns number of the outermost SENSITIVE time bin
3068 return GetLayerNumber(GetNumberOfTimeBins() - 1);
3072 //_____________________________________________________________________________
3073 Int_t AliTRDtracker::AliTRDtrackingSector
3074 ::GetNumberOfTimeBins() const
3077 // Returns number of SENSITIVE time bins
3083 for (tb = kMaxTimeBinIndex - 1; tb >= 0; tb--) {
3084 layer = GetLayerNumber(tb);
3094 //_____________________________________________________________________________
3095 void AliTRDtracker::AliTRDtrackingSector
3096 ::InsertLayer(AliTRDpropagationLayer *pl)
3099 // Insert layer <pl> in fLayers array.
3100 // Layers are sorted according to X coordinate.
3103 if (fN == ((Int_t) kMaxLayersPerSector)) {
3104 //AliWarning("Too many layers !\n");
3113 Int_t i = Find(pl->GetX());
3115 memmove(fLayers+i+1,fLayers+i,(fN-i)*sizeof(AliTRDpropagationLayer*));
3122 //_____________________________________________________________________________
3123 Int_t AliTRDtracker::AliTRDtrackingSector
3124 ::Find(Double_t x) const
3127 // Returns index of the propagation layer nearest to X
3130 if (x <= fLayers[0]->GetX()) {
3134 if (x > fLayers[fN-1]->GetX()) {
3140 Int_t m = (b + e) / 2;
3142 for (; b < e; m = (b + e) / 2) {
3143 if (x > fLayers[m]->GetX()) {
3155 //_____________________________________________________________________________
3156 void AliTRDtracker::AliTRDpropagationLayer
3157 ::SetZ(Double_t *center, Double_t *w, Double_t *wsensitive )
3160 // set centers and the width of sectors
3163 for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) {
3164 fZc[icham] = center[icham];
3165 fZmax[icham] = w[icham];
3166 fZmaxSensitive[icham] = wsensitive[icham];
3171 //_____________________________________________________________________________
3172 void AliTRDtracker::AliTRDpropagationLayer::SetHoles(Bool_t *holes)
3175 // set centers and the width of sectors
3180 for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) {
3181 fIsHole[icham] = holes[icham];
3189 //_____________________________________________________________________________
3190 void AliTRDtracker::AliTRDpropagationLayer
3191 ::InsertCluster(AliTRDcluster *c, UInt_t index)
3194 // Insert cluster in cluster array.
3195 // Clusters are sorted according to Y coordinate.
3198 if (fTimeBinIndex < 0) {
3199 //AliWarning("Attempt to insert cluster into non-sensitive time bin!\n");
3203 if (fN == (Int_t) kMaxClusterPerTimeBin) {
3204 //AliWarning("Too many clusters !\n");
3210 fClusters[fN++] = c;
3214 Int_t i = Find(c->GetY());
3215 memmove(fClusters+i+1,fClusters+i,(fN-i)*sizeof(AliTRDcluster*));
3216 memmove(fIndex +i+1,fIndex +i,(fN-i)*sizeof(UInt_t));
3223 //_____________________________________________________________________________
3224 Int_t AliTRDtracker::AliTRDpropagationLayer::Find(Float_t y) const
3227 // Returns index of the cluster nearest in Y
3233 if (y <= fClusters[0]->GetY()) {
3236 if (y > fClusters[fN-1]->GetY()) {
3242 Int_t m = (b + e) / 2;
3244 for ( ; b < e; m = (b + e) / 2) {
3245 if (y > fClusters[m]->GetY()) {
3257 //_____________________________________________________________________________
3258 Int_t AliTRDtracker::AliTRDpropagationLayer
3259 ::FindNearestCluster(Float_t y, Float_t z, Float_t maxroad
3260 , Float_t maxroadz) const
3263 // Returns index of the cluster nearest to the given y,z
3268 Float_t mindist = maxroad;
3270 for (Int_t i = Find(y-maxroad); i < maxn; i++) {
3271 AliTRDcluster *c = (AliTRDcluster *) (fClusters[i]);
3272 Float_t ycl = c->GetY();
3273 if (ycl > (y + maxroad)) {
3276 if (TMath::Abs(c->GetZ() - z) > maxroadz) {
3279 if (TMath::Abs(ycl - y) < mindist) {
3280 mindist = TMath::Abs(ycl - y);
3289 //_____________________________________________________________________________
3290 Double_t AliTRDtracker::GetTiltFactor(const AliTRDcluster *c)
3293 // Returns correction factor for tilted pads geometry
3296 Int_t det = c->GetDetector();
3297 Int_t plane = fGeom->GetPlane(det);
3298 AliTRDpadPlane *padPlane = fGeom->GetPadPlane(plane,0);
3299 Double_t h01 = TMath::Tan(-TMath::Pi() / 180.0 * padPlane->GetTiltingAngle());
3310 //_____________________________________________________________________________
3311 Int_t AliTRDtracker::FindClusters(Int_t sector, Int_t t0, Int_t t1
3312 , AliTRDtrack *track
3313 , Int_t *clusters, AliTRDtracklet &tracklet)
3317 // Try to find nearest clusters to the track in timebins from t0 to t1
3319 // Correction coeficients - depend on TRD parameters - to be changed accordingly
3325 Double_t xmean = 0.0; // Reference x
3326 Double_t dz[10][100];
3327 Double_t dy[10][100];
3331 Int_t indexes[10][100]; // Indexes of the clusters in the road
3332 Int_t best[10][100]; // Index of best matching cluster
3333 AliTRDcluster *cl[10][100]; // Pointers to the clusters in the road
3335 for (Int_t it = 0; it < 100; it++) {
3342 for (Int_t ih = 0; ih < 10;ih++) {
3343 indexes[ih][it] = -2; // Reset indexes1
3345 dz[ih][it] = -100.0;
3346 dy[ih][it] = -100.0;
3351 Double_t x0 = track->GetX();
3352 Double_t sigmaz = TMath::Sqrt(TMath::Abs(track->GetSigmaZ2()));
3357 Int_t detector = -1;
3358 Float_t padlength = 0.0;
3359 AliTRDtrack track2(* track);
3360 Float_t snpy = track->GetSnp();
3361 Float_t tany = TMath::Sqrt(snpy*snpy / (1.0 - snpy*snpy));
3366 Double_t sy2 = ExpectedSigmaY2(x0,track->GetTgl(),track->GetSignedPt());
3367 Double_t sz2 = ExpectedSigmaZ2(x0,track->GetTgl());
3368 Double_t road = 15.0 * TMath::Sqrt(track->GetSigmaY2() + sy2);
3374 for (Int_t it = 0; it < t1-t0; it++) {
3376 Double_t maxChi2[2] = { fgkMaxChi2, fgkMaxChi2 };
3377 AliTRDpropagationLayer &timeBin = *(fTrSec[sector]->GetLayer(it+t0));
3379 continue; // No indexes1
3382 Int_t maxn = timeBin;
3383 x[it] = timeBin.GetX();
3384 track2.PropagateTo(x[it]);
3385 yt[it] = track2.GetY();
3386 zt[it] = track2.GetZ();
3388 Double_t y = yt[it];
3389 Double_t z = zt[it];
3390 Double_t chi2 = 1000000.0;
3394 // Find 2 nearest cluster at given time bin
3396 int checkPoint[4] = {0,0,0,0};
3397 double minY = 123456789;
3398 double minD[2] = {1,1};
3400 for (Int_t i = timeBin.Find(y - road); i < maxn; i++) {
3401 //for (Int_t i = 0; i < maxn; i++) {
3403 AliTRDcluster *c = (AliTRDcluster *) (timeBin[i]);
3404 h01 = GetTiltFactor(c);
3406 Int_t det = c->GetDetector();
3407 plane = fGeom->GetPlane(det);
3408 padlength = TMath::Sqrt(c->GetSigmaZ2() * 12.0);
3411 //if (c->GetLocalTimeBin()==0) continue;
3412 if (c->GetY() > (y + road)) {
3416 fHDeltaX->Fill(c->GetX() - x[it]);
3417 //printf("%f\t%f\t%f \n", c->GetX(), x[it], c->GetX()-x[it]);
3419 if (TMath::Abs(c->GetY()-y) < TMath::Abs(minY)) {
3421 minD[0] = c->GetY()-y;
3422 minD[1] = c->GetZ()-z;
3427 fHMinZ->Fill(c->GetZ() - z);
3428 if ((c->GetZ() - z) * (c->GetZ() - z) > 2 * (12.0 * sz2)) {
3433 Double_t dist = TMath::Abs(c->GetZ() - z);
3434 if (dist > (0.5 * padlength + 6.0 * sigmaz)) { // 0.5
3435 continue; // 6 sigma boundary cut
3439 Double_t cost = 0.0;
3440 // Sigma boundary cost function
3441 if (dist> (0.5 * padlength - sigmaz)){
3442 cost = (dist - 0.5*padlength) / (2.0 * sigmaz);
3444 cost = (cost + 1.0) * (cost + 1.0);
3450 //Int_t label = TMath::Abs(track->GetLabel());
3451 //if (c->GetLabel(0)!=label && c->GetLabel(1)!=label&&c->GetLabel(2)!=label) continue;
3452 chi2 = track2.GetPredictedChi2(c,h01) + cost;
3455 if (chi2 > maxChi2[1]) {
3460 detector = c->GetDetector();
3461 // Store the clusters in the road
3462 for (Int_t ih = 2; ih < 9; ih++) {
3463 if (cl[ih][it] == 0) {
3465 indexes[ih][it] = timeBin.GetIndex(i); // Index - 9 - reserved for outliers
3470 if (chi2 < maxChi2[0]) {
3471 maxChi2[1] = maxChi2[0];
3473 indexes[1][it] = indexes[0][it];
3474 cl[1][it] = cl[0][it];
3475 indexes[0][it] = timeBin.GetIndex(i);
3481 indexes[1][it] = timeBin.GetIndex(i);
3485 for(int iCheckPoint = 0; iCheckPoint<4; iCheckPoint++)
3486 fHFindCl[iCheckPoint]->Fill(checkPoint[iCheckPoint]);
3488 if (checkPoint[3]) {
3489 if (track->GetSignedPt() > 0) fHMinYPos->Fill(minY);
3490 else fHMinYNeg->Fill(minY);
3492 fHMinD->Fill(minD[0], minD[1]);
3505 xmean /= Float_t(nfound); // Middle x
3506 track2.PropagateTo(xmean); // Propagate track to the center
3509 // Choose one of the variants
3514 Double_t sumdy = 0.0;
3515 Double_t sumdy2 = 0.0;
3516 Double_t sumx = 0.0;
3517 Double_t sumxy = 0.0;
3518 Double_t sumx2 = 0.0;
3519 Double_t mpads = 0.0;
3525 Double_t moffset[10]; // Mean offset
3526 Double_t mean[10]; // Mean value
3527 Double_t angle[10]; // Angle
3529 Double_t smoffset[10]; // Sigma of mean offset
3530 Double_t smean[10]; // Sigma of mean value
3531 Double_t sangle[10]; // Sigma of angle
3532 Double_t smeanangle[10]; // Correlation
3534 Double_t sigmas[10];
3535 Double_t tchi2s[10]; // Chi2s for tracklet
3537 for (Int_t it = 0; it < 10; it++) {
3543 moffset[it] = 0.0; // Mean offset
3544 mean[it] = 0.0; // Mean value
3545 angle[it] = 0.0; // Angle
3547 smoffset[it] = 1.0e5; // Sigma of mean offset
3548 smean[it] = 1.0e5; // Sigma of mean value
3549 sangle[it] = 1.0e5; // Sigma of angle
3550 smeanangle[it] = 0.0; // Correlation
3553 tchi2s[it] = 1.0e5; // Chi2s for tracklet
3560 for (Int_t it = 0; it < t1 - t0; it++) {
3564 for (Int_t dt = -3; dt <= 3; dt++) {
3568 if (it+dt > t1-t0) {
3571 if (!cl[0][it+dt]) {
3574 zmean[it] += cl[0][it+dt]->GetZ();
3577 zmean[it] /= nmean[it];
3580 for (Int_t it = 0; it < t1 - t0; it++) {
3584 for (Int_t ih = 0; ih < 10; ih++) {
3585 dz[ih][it] = -100.0;
3586 dy[ih][it] = -100.0;
3590 Double_t xcluster = cl[ih][it]->GetX();
3593 track2.GetProlongation(xcluster,ytrack,ztrack );
3594 dz[ih][it] = cl[ih][it]->GetZ()- ztrack; // Calculate distance from track in z
3595 dy[ih][it] = cl[ih][it]->GetY() + dz[ih][it]*h01 - ytrack; // and in y
3602 if ((TMath::Abs(cl[0][it]->GetZ()-zmean[it]) > padlength * 0.8) &&
3604 if (TMath::Abs(cl[1][it]->GetZ()-zmean[it]) < padlength * 0.5) {
3612 // Iterative choice of "best path"
3614 Int_t label = TMath::Abs(track->GetLabel());
3617 for (Int_t iter = 0; iter < 9; iter++) {
3632 for (Int_t it = 0; it < t1 - t0; it++) {
3634 if (!cl[best[iter][it]][it]) {
3638 // Calculates pad-row changes
3639 Double_t zbefore = cl[best[iter][it]][it]->GetZ();
3640 Double_t zafter = cl[best[iter][it]][it]->GetZ();
3641 for (Int_t itd = it - 1; itd >= 0; itd--) {
3642 if (cl[best[iter][itd]][itd]) {
3643 zbefore = cl[best[iter][itd]][itd]->GetZ();
3647 for (Int_t itd = it + 1; itd < t1 - t0; itd++) {
3648 if (cl[best[iter][itd]][itd]) {
3649 zafter = cl[best[iter][itd]][itd]->GetZ();
3653 if ((TMath::Abs(cl[best[iter][it]][it]->GetZ()-zbefore) > 0.1) &&
3654 (TMath::Abs(cl[best[iter][it]][it]->GetZ()- zafter) > 0.1)) {
3658 Double_t dx = x[it]-xmean; // Distance to reference x
3659 sumz += cl[best[iter][it]][it]->GetZ();
3661 sumdy += dy[best[iter][it]][it];
3662 sumdy2 += dy[best[iter][it]][it]*dy[best[iter][it]][it];
3665 sumxy += dx*dy[best[iter][it]][it];
3666 mpads += cl[best[iter][it]][it]->GetNPads();
3667 if ((cl[best[iter][it]][it]->GetLabel(0) == label) ||
3668 (cl[best[iter][it]][it]->GetLabel(1) == label) ||
3669 (cl[best[iter][it]][it]->GetLabel(2) == label)) {
3679 // calculates line parameters
3681 Double_t det = sum*sumx2 - sumx*sumx;
3682 angle[iter] = (sum*sumxy - sumx*sumdy) / det;
3683 mean[iter] = (sumx2*sumdy - sumx*sumxy) / det;
3684 meanz[iter] = sumz / sum;
3685 moffset[iter] = sumdy / sum;
3686 mpads /= sum; // Mean number of pads
3688 Double_t sigma2 = 0.0; // Normalized residuals - for line fit
3689 Double_t sigma1 = 0.0; // Normalized residuals - constant fit
3691 for (Int_t it = 0; it < t1 - t0; it++) {
3692 if (!cl[best[iter][it]][it]) {
3695 Double_t dx = x[it] - xmean;
3696 Double_t ytr = mean[iter] + angle[iter] * dx;
3697 sigma2 += (dy[best[iter][it]][it] - ytr)
3698 * (dy[best[iter][it]][it] - ytr);
3699 sigma1 += (dy[best[iter][it]][it] - moffset[iter])
3700 * (dy[best[iter][it]][it] - moffset[iter]);
3703 sigma2 /= (sum - 2); // Normalized residuals
3704 sigma1 /= (sum - 1); // Normalized residuals
3705 smean[iter] = sigma2 * (sumx2 / det); // Estimated error2 of mean
3706 sangle[iter] = sigma2 * ( sum / det); // Estimated error2 of angle
3707 smeanangle[iter] = sigma2 * (-sumx / det); // Correlation
3708 sigmas[iter] = TMath::Sqrt(sigma1);
3709 smoffset[iter] = (sigma1 / sum) + 0.01*0.01; // Sigma of mean offset + unisochronity sigma
3712 // Iterative choice of "better path"
3714 for (Int_t it = 0; it < t1 - t0; it++) {
3716 if (!cl[best[iter][it]][it]) {
3720 // Add unisochronity + angular effect contribution
3721 Double_t sigmatr2 = smoffset[iter] + 0.5*tany*tany;
3722 Double_t sweight = 1.0/sigmatr2 + 1.0/track->GetSigmaY2();
3723 Double_t weighty = (moffset[iter] / sigmatr2) / sweight; // Weighted mean
3724 Double_t sigmacl = TMath::Sqrt(sigma1*sigma1 + track->GetSigmaY2());
3725 Double_t mindist = 100000.0;
3728 for (Int_t ih = 0; ih < 10; ih++) {
3732 Double_t dist2 = (dy[ih][it] - weighty) / sigmacl;
3733 dist2 *= dist2; // Chi2 distance
3734 if (dist2 < mindist) {
3739 best[iter+1][it] = ihbest;
3743 // Update best hypothesy if better chi2 according tracklet position and angle
3745 Double_t sy2 = smean[iter] + track->GetSigmaY2();
3746 Double_t sa2 = sangle[iter] + track->GetSigmaSnp2(); // track->fCee;
3747 Double_t say = track->GetSigmaSnpY(); // track->fCey;
3748 //Double_t chi20 = mean[bestiter]*mean[bestiter ] / sy2+angle[bestiter]*angle[bestiter]/sa2;
3749 //Double_t chi21 = mean[iter]*mean[iter] / sy2+angle[iter]*angle[iter]/sa2;
3751 Double_t detchi = sy2*sa2 - say*say;
3752 Double_t invers[3] = {sa2/detchi,sy2/detchi,-say/detchi}; // Inverse value of covariance matrix
3754 Double_t chi20 = mean[bestiter] * mean[bestiter] * invers[0]
3755 + angle[bestiter] * angle[bestiter] * invers[1]
3756 + 2.0 * mean[bestiter] * angle[bestiter] * invers[2];
3757 Double_t chi21 = mean[iter] * mean[iter] * invers[0]
3758 + angle[iter] * angle[iter] * invers[1]
3759 + 2.0 * mean[iter] * angle[iter] * invers[2];
3760 tchi2s[iter] = chi21;
3762 if ((changes[iter] <= changes[bestiter]) &&
3772 Double_t sigma2 = sigmas[0]; // Choose as sigma from 0 iteration
3773 Short_t maxpos = -1;
3774 Float_t maxcharge = 0.0;
3775 Short_t maxpos4 = -1;
3776 Float_t maxcharge4 = 0.0;
3777 Short_t maxpos5 = -1;
3778 Float_t maxcharge5 = 0.0;
3780 //if (tchi2s[bestiter]>25.) sigma2*=tchi2s[bestiter]/25.;
3781 //if (tchi2s[bestiter]>25.) sigma2=1000.; // dont'accept
3783 Double_t exB = AliTRDcalibDB::Instance()->GetOmegaTau(AliTRDcalibDB::Instance()->GetVdrift(0,0,0)
3784 ,-AliTracker::GetBz()*0.1);
3785 Double_t expectederr = sigma2*sigma2 + 0.01*0.01;
3787 expectederr += (mpads - 3.5) * 0.04;
3789 if (changes[bestiter] > 1) {
3790 expectederr += changes[bestiter] * 0.01;
3792 expectederr += (0.03 * (tany-exB)*(tany-exB)) * 15.0;
3793 //if (tchi2s[bestiter]>18.) expectederr*= tchi2s[bestiter]/18.;
3794 //expectederr+=10000;
3796 for (Int_t it = 0; it < t1 - t0; it++) {
3798 if (!cl[best[bestiter][it]][it]) {
3802 cl[best[bestiter][it]][it]->SetSigmaY2(expectederr); // Set cluster error
3803 if (!cl[best[bestiter][it]][it]->IsUsed()) {
3804 cl[best[bestiter][it]][it]->SetY(cl[best[bestiter][it]][it]->GetY());
3805 //cl[best[bestiter][it]][it]->Use();
3808 // Time bins with maximal charge
3809 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge) {
3810 maxcharge = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
3811 maxpos = cl[best[bestiter][it]][it]->GetLocalTimeBin();
3814 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge4) {
3815 if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 4) {
3816 maxcharge4 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
3817 maxpos4 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
3821 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge5) {
3822 if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 5) {
3823 maxcharge5 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
3824 maxpos5 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
3828 // Time bins with maximal charge
3829 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge) {
3830 maxcharge = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
3831 maxpos = cl[best[bestiter][it]][it]->GetLocalTimeBin();
3834 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge4) {
3835 if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 4) {
3836 maxcharge4 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
3837 maxpos4 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
3841 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge5) {
3842 if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 5) {
3843 maxcharge5 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
3844 maxpos5 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
3848 clusters[it+t0] = indexes[best[bestiter][it]][it];
3850 // Still needed ????
3851 //if (cl[best[bestiter][it]][it]->GetLocalTimeBin()>4 &&
3852 //cl[best[bestiter][it]][it]->GetLocalTimeBin()<18) clusters[it+t0]
3853 // = indexes[best[bestiter][it]][it]; //Test
3858 // Set tracklet parameters
3860 Double_t trackleterr2 = smoffset[bestiter] + 0.01*0.01;
3862 trackleterr2 += (mpads - 3.5) * 0.04;
3864 trackleterr2 += changes[bestiter] * 0.01;
3865 trackleterr2 *= TMath::Max(14.0 - nfound,1.0);
3866 trackleterr2 += 0.2 * (tany-exB)*(tany-exB);
3868 // Set tracklet parameters
3870 ,track2.GetY() + moffset[bestiter]
3874 tracklet.SetTilt(h01);
3875 tracklet.SetP0(mean[bestiter]);
3876 tracklet.SetP1(angle[bestiter]);
3877 tracklet.SetN(nfound);
3878 tracklet.SetNCross(changes[bestiter]);
3879 tracklet.SetPlane(plane);
3880 tracklet.SetSigma2(expectederr);
3881 tracklet.SetChi2(tchi2s[bestiter]);
3882 tracklet.SetMaxPos(maxpos,maxpos4,maxpos5);
3883 track->SetTracklets(plane,tracklet);
3884 track->SetNWrong(track->GetNWrong() + nbad[0]);
3889 TClonesArray array0("AliTRDcluster");
3890 TClonesArray array1("AliTRDcluster");
3891 array0.ExpandCreateFast(t1 - t0 + 1);
3892 array1.ExpandCreateFast(t1 - t0 + 1);
3893 TTreeSRedirector &cstream = *fDebugStreamer;
3894 AliTRDcluster dummy;
3898 for (Int_t it = 0; it < t1 - t0; it++) {
3899 dy0[it] = dy[0][it];
3900 dyb[it] = dy[best[bestiter][it]][it];
3902 new(array0[it]) AliTRDcluster(*cl[0][it]);
3905 new(array0[it]) AliTRDcluster(dummy);
3907 if(cl[best[bestiter][it]][it]) {
3908 new(array1[it]) AliTRDcluster(*cl[best[bestiter][it]][it]);
3911 new(array1[it]) AliTRDcluster(dummy);
3914 TGraph graph0(t1-t0,x,dy0);
3915 TGraph graph1(t1-t0,x,dyb);
3916 TGraph graphy(t1-t0,x,yt);
3917 TGraph graphz(t1-t0,x,zt);
3919 if (AliTRDReconstructor::StreamLevel() > 0) {
3920 cstream << "tracklet"
3921 << "track.=" << track // Track parameters
3922 << "tany=" << tany // Tangent of the local track angle
3923 << "xmean=" << xmean // Xmean - reference x of tracklet
3924 << "tilt=" << h01 // Tilt angle
3925 << "nall=" << nall // Number of foundable clusters
3926 << "nfound=" << nfound // Number of found clusters
3927 << "clfound=" << clfound // Total number of found clusters in road
3928 << "mpads=" << mpads // Mean number of pads per cluster
3929 << "plane=" << plane // Plane number
3930 << "detector=" << detector // Detector number
3931 << "road=" << road // The width of the used road
3932 << "graph0.=" << &graph0 // x - y = dy for closest cluster
3933 << "graph1.=" << &graph1 // x - y = dy for second closest cluster
3934 << "graphy.=" << &graphy // y position of the track
3935 << "graphz.=" << &graphz // z position of the track
3936 //<< "fCl.=" << &array0 // closest cluster
3937 //<< "fCl2.=" << &array1 // second closest cluster
3938 << "maxpos=" << maxpos // Maximal charge postion
3939 << "maxcharge=" << maxcharge // Maximal charge
3940 << "maxpos4=" << maxpos4 // Maximal charge postion - after bin 4
3941 << "maxcharge4=" << maxcharge4 // Maximal charge - after bin 4
3942 << "maxpos5=" << maxpos5 // Maximal charge postion - after bin 5
3943 << "maxcharge5=" << maxcharge5 // Maximal charge - after bin 5
3944 << "bestiter=" << bestiter // Best iteration number
3945 << "tracklet.=" << &tracklet // Corrspond to the best iteration
3946 << "tchi20=" << tchi2s[0] // Chi2 of cluster in the 0 iteration
3947 << "tchi2b=" << tchi2s[bestiter] // Chi2 of cluster in the best iteration
3948 << "sigmas0=" << sigmas[0] // Residuals sigma
3949 << "sigmasb=" << sigmas[bestiter] // Residulas sigma
3950 << "ngood0=" << ngood[0] // Number of good clusters in 0 iteration
3951 << "nbad0=" << nbad[0] // Number of bad clusters in 0 iteration
3952 << "ngoodb=" << ngood[bestiter] // in best iteration
3953 << "nbadb=" << nbad[bestiter] // in best iteration
3954 << "changes0=" << changes[0] // Changes of pardrows in iteration number 0
3955 << "changesb=" << changes[bestiter] // Changes of pardrows in best iteration
3956 << "moffset0=" << moffset[0] // Offset fixing angle in iter=0
3957 << "smoffset0=" << smoffset[0] // Sigma of offset fixing angle in iter=0
3958 << "moffsetb=" << moffset[bestiter] // Offset fixing angle in iter=best
3959 << "smoffsetb=" << smoffset[bestiter] // Sigma of offset fixing angle in iter=best
3960 << "mean0=" << mean[0] // Mean dy in iter=0;
3961 << "smean0=" << smean[0] // Sigma of mean dy in iter=0
3962 << "meanb=" << mean[bestiter] // Mean dy in iter=best
3963 << "smeanb=" << smean[bestiter] // Sigma of mean dy in iter=best
3964 << "angle0=" << angle[0] // Angle deviation in the iteration number 0
3965 << "sangle0=" << sangle[0] // Sigma of angular deviation in iteration number 0
3966 << "angleb=" << angle[bestiter] // Angle deviation in the best iteration
3967 << "sangleb=" << sangle[bestiter] // Sigma of angle deviation in the best iteration
3968 << "expectederr=" << expectederr // Expected error of cluster position
3976 //_____________________________________________________________________________
3977 Int_t AliTRDtracker::Freq(Int_t n, const Int_t *inlist
3978 , Int_t *outlist, Bool_t down)
3981 // Sort eleements according occurancy
3982 // The size of output array has is 2*n
3989 Int_t *sindexS = new Int_t[n]; // Temporary array for sorting
3990 Int_t *sindexF = new Int_t[2*n];
3991 for (Int_t i = 0; i < n; i++) {
3995 TMath::Sort(n,inlist,sindexS,down);
3997 Int_t last = inlist[sindexS[0]];
4000 sindexF[0+n] = last;
4004 for (Int_t i = 1; i < n; i++) {
4005 val = inlist[sindexS[i]];
4007 sindexF[countPos]++;
4011 sindexF[countPos+n] = val;
4012 sindexF[countPos]++;
4020 // Sort according frequency
4021 TMath::Sort(countPos,sindexF,sindexS,kTRUE);
4023 for (Int_t i = 0; i < countPos; i++) {
4024 outlist[2*i ] = sindexF[sindexS[i]+n];
4025 outlist[2*i+1] = sindexF[sindexS[i]];
4035 //_____________________________________________________________________________
4036 AliTRDtrack *AliTRDtracker::RegisterSeed(AliTRDseed *seeds, Double_t *params)
4042 Double_t alpha = AliTRDgeometry::GetAlpha();
4043 Double_t shift = AliTRDgeometry::GetAlpha()/2.0;
4047 c[ 1] = 0.0; c[ 2] = 2.0;
4048 c[ 3] = 0.0; c[ 4] = 0.0; c[ 5] = 0.02;
4049 c[ 6] = 0.0; c[ 7] = 0.0; c[ 8] = 0.0; c[ 9] = 0.1;
4050 c[10] = 0.0; c[11] = 0.0; c[12] = 0.0; c[13] = 0.0; c[14] = params[5]*params[5]*0.01;
4053 AliTRDcluster *cl = 0;
4055 for (Int_t ilayer = 0; ilayer < 6; ilayer++) {
4056 if (seeds[ilayer].IsOK()) {
4057 for (Int_t itime = 22; itime > 0; itime--) {
4058 if (seeds[ilayer].GetIndexes(itime) > 0) {
4059 index = seeds[ilayer].GetIndexes(itime);
4060 cl = seeds[ilayer].GetClusters(itime);
4073 AliTRDtrack *track = new AliTRDtrack(cl
4078 ,params[6]*alpha+shift);
4079 // SetCluster(cl, 0); // A. Bercuci
4080 track->PropagateTo(params[0]-5.0);
4081 track->ResetCovariance(1);
4083 Int_t rc = FollowBackProlongation(*track);
4090 track->CookdEdxTimBin(-1);
4091 CookLabel(track,0.9);
4097 //////////////////////////////////////////////////////////////////////////////////////////
4099 void AliTRDtracker::InitLogHists() {
4101 fHBackfit = new TH1D("logTRD_backfit", "", 40, -0.5, 39.5);
4102 fHRefit = new TH1D("logTRD_refit", "", 40, -0.5, 39.5);
4103 fHClSearch = new TH1D("logTRD_clSearch", "", 60, -0.5, 59.5);
4105 fHX = new TH1D("logTRD_X", ";x (cm)", 200, 50, 400);
4106 fHNCl = new TH1D("logTRD_ncl", "", 40, -0.5, 39.5);
4107 fHNClTrack = new TH1D("logTRD_nclTrack", "", 180, -0.5, 179.5);
4109 fHMinYPos = new TH1D("logTRD_minYPos", ";#delta Y (cm)", 400, -6, 6);
4110 fHMinYNeg = new TH1D("logTRD_minYNeg", ";#delta Y (cm)", 400, -6, 6);
4111 fHMinZ = new TH1D("logTRD_minZ", ";#delta Z (cm)", 400, -20, 20);
4112 fHMinD = new TH2D("logTRD_minD", ";#delta Y (cm);#delta Z (cm)", 100, -6, 6, 100, -50, 50);
4114 fHDeltaX = new TH1D("logTRD_deltaX", ";#delta X (cm)", 100, -5, 5);
4115 fHXCl = new TH1D("logTRD_xCl", ";cluster x position (cm)", 1000, 280, 380);
4117 const char *nameFindCl[4] = {"logTRD_clY", "logTRD_clZ", "logTRD_clB", "logTRD_clG"};
4119 for(int i=0; i<4; i++) {
4120 fHFindCl[i] = new TH1D(nameFindCl[i], "", 30, -0.5, 29.5);
4124 //////////////////////////////////////////////////////////////////////////////////////////
4126 void AliTRDtracker::SaveLogHists() {
4128 TDirectory *sav = gDirectory;
4131 TSeqCollection *col = gROOT->GetListOfFiles();
4132 int N = col->GetEntries();
4133 for(int i=0; i<N; i++) {
4134 logFile = (TFile*)col->At(i);
4135 if (strstr(logFile->GetName(), "AliESDs.root")) break;
4139 fHBackfit->Write(fHBackfit->GetName(), TObject::kOverwrite);
4140 fHRefit->Write(fHRefit->GetName(), TObject::kOverwrite);
4141 fHClSearch->Write(fHClSearch->GetName(), TObject::kOverwrite);
4142 fHX->Write(fHX->GetName(), TObject::kOverwrite);
4143 fHNCl->Write(fHNCl->GetName(), TObject::kOverwrite);
4144 fHNClTrack->Write(fHNClTrack->GetName(), TObject::kOverwrite);
4146 fHMinYPos->Write(fHMinYPos->GetName(), TObject::kOverwrite);
4147 fHMinYNeg->Write(fHMinYNeg->GetName(), TObject::kOverwrite);
4148 fHMinD->Write(fHMinD->GetName(), TObject::kOverwrite);
4149 fHMinZ->Write(fHMinZ->GetName(), TObject::kOverwrite);
4151 fHDeltaX->Write(fHDeltaX->GetName(), TObject::kOverwrite);
4152 fHXCl->Write(fHXCl->GetName(), TObject::kOverwrite);
4155 for(int i=0; i<4; i++)
4156 fHFindCl[i]->Write(fHFindCl[i]->GetName(), TObject::kOverwrite);
4163 //////////////////////////////////////////////////////////////////////////////////////////