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();
179 fGeom->ReadGeoMatrices();
181 for (Int_t geomS = 0; geomS < kTrackingSectors; geomS++) {
183 fTrSec[trS] = new AliTRDtrackingSector(fGeom,geomS);
184 for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) {
186 fHoles[icham][trS] = fGeom->IsHole(0,icham,geomS);
190 AliTRDpadPlane *padPlane = fGeom->GetPadPlane(0,0);
191 Float_t tiltAngle = TMath::Abs(padPlane->GetTiltingAngle());
192 if (tiltAngle < 0.1) {
196 if (!AliTRDcalibDB::Instance()) {
197 AliFatal("Could not get calibration object");
199 fTimeBinsPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
201 fDebugStreamer = new TTreeSRedirector("TRDdebug.root");
209 //_____________________________________________________________________________
210 AliTRDtracker::~AliTRDtracker()
213 // Destructor of AliTRDtracker
235 for (Int_t geomS = 0; geomS < kTrackingSectors; geomS++) {
236 delete fTrSec[geomS];
239 if (fDebugStreamer) {
240 delete fDebugStreamer;
245 //_____________________________________________________________________________
246 Int_t AliTRDtracker::LocalToGlobalID(Int_t lid)
249 // Transform internal TRD ID to global detector ID
252 Int_t isector = fGeom->GetSector(lid);
253 Int_t ichamber = fGeom->GetChamber(lid);
254 Int_t iplan = fGeom->GetPlane(lid);
256 AliGeomManager::ELayerID iLayer = AliGeomManager::kTRD1;
259 iLayer = AliGeomManager::kTRD1;
262 iLayer = AliGeomManager::kTRD2;
265 iLayer = AliGeomManager::kTRD3;
268 iLayer = AliGeomManager::kTRD4;
271 iLayer = AliGeomManager::kTRD5;
274 iLayer = AliGeomManager::kTRD6;
278 Int_t modId = isector * fGeom->Ncham() + ichamber;
279 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,modId);
285 //_____________________________________________________________________________
286 Int_t AliTRDtracker::GlobalToLocalID(Int_t gid)
289 // Transform global detector ID to local detector ID
293 AliGeomManager::ELayerID layerId = AliGeomManager::VolUIDToLayer(gid,modId);
295 Int_t isector = modId / fGeom->Ncham();
296 Int_t ichamber = modId % fGeom->Ncham();
300 case AliGeomManager::kTRD1:
303 case AliGeomManager::kTRD2:
306 case AliGeomManager::kTRD3:
309 case AliGeomManager::kTRD4:
312 case AliGeomManager::kTRD5:
315 case AliGeomManager::kTRD6:
326 Int_t lid = fGeom->GetDetector(iLayer,ichamber,isector);
332 //_____________________________________________________________________________
333 Bool_t AliTRDtracker::AdjustSector(AliTRDtrack *track)
336 // Rotates the track when necessary
339 Double_t alpha = AliTRDgeometry::GetAlpha();
340 Double_t y = track->GetY();
341 Double_t ymax = track->GetX()*TMath::Tan(0.5*alpha);
343 // Is this still needed ????
344 //Int_t ns = AliTRDgeometry::kNsect;
345 //Int_t s=Int_t(track->GetAlpha()/alpha)%ns;
349 if (!track->Rotate( alpha)) {
353 else if (y < -ymax) {
355 if (!track->Rotate(-alpha)) {
364 //_____________________________________________________________________________
365 AliTRDcluster *AliTRDtracker::GetCluster(AliTRDtrack *track, Int_t plane
366 , Int_t timebin, UInt_t &index)
369 // Try to find cluster in the backup list
372 AliTRDcluster *cl =0;
373 Int_t *indexes = track->GetBackupIndexes();
375 for (UInt_t i = 0; i < kMaxTimeBinIndex; i++) {
376 if (indexes[i] == 0) {
379 AliTRDcluster *cli = (AliTRDcluster *) fClusters->UncheckedAt(indexes[i]);
383 if (cli->GetLocalTimeBin() != timebin) {
386 Int_t iplane = fGeom->GetPlane(cli->GetDetector());
387 if (iplane == plane) {
398 //_____________________________________________________________________________
399 Int_t AliTRDtracker::GetLastPlane(AliTRDtrack *track)
402 // Return last updated plane
406 Int_t *indexes = track->GetBackupIndexes();
408 for (UInt_t i = 0; i < kMaxTimeBinIndex; i++) {
409 AliTRDcluster *cli = (AliTRDcluster *) fClusters->UncheckedAt(indexes[i]);
413 Int_t iplane = fGeom->GetPlane(cli->GetDetector());
414 if (iplane > lastplane) {
423 //_____________________________________________________________________________
424 Int_t AliTRDtracker::Clusters2Tracks(AliESDEvent *event)
427 // Finds tracks within the TRD. The ESD event is expected to contain seeds
428 // at the outer part of the TRD. The seeds
429 // are found within the TRD if fAddTRDseeds is TRUE.
430 // The tracks are propagated to the innermost time bin
431 // of the TRD and the ESD event is updated
434 Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins();
435 Float_t foundMin = fgkMinClustersInTrack * timeBins;
438 //Int_t innerTB = fTrSec[0]->GetInnerTimeBin();
440 Int_t n = event->GetNumberOfTracks();
441 for (Int_t i = 0; i < n; i++) {
443 AliESDtrack *seed = event->GetTrack(i);
444 ULong_t status = seed->GetStatus();
445 if ((status & AliESDtrack::kTRDout) == 0) {
448 if ((status & AliESDtrack::kTRDin) != 0) {
453 AliTRDtrack *seed2 = new AliTRDtrack(*seed);
454 //seed2->ResetCovariance();
455 AliTRDtrack *pt = new AliTRDtrack(*seed2,seed2->GetAlpha());
456 AliTRDtrack &t = *pt;
457 FollowProlongation(t);
458 if (t.GetNumberOfClusters() >= foundMin) {
460 CookLabel(pt,1 - fgkLabelFraction);
465 Double_t xTPC = 250.0;
466 if (PropagateToX(t,xTPC,fgkMaxStep)) {
467 seed->UpdateTrackParams(pt, AliESDtrack::kTRDin);
474 AliInfo(Form("Number of loaded seeds: %d",nseed));
475 AliInfo(Form("Number of found tracks from loaded seeds: %d",found));
476 AliInfo(Form("Total number of found tracks: %d",found));
482 //_____________________________________________________________________________
483 Int_t AliTRDtracker::PropagateBack(AliESDEvent *event)
486 // Gets seeds from ESD event. The seeds are AliTPCtrack's found and
487 // backpropagated by the TPC tracker. Each seed is first propagated
488 // to the TRD, and then its prolongation is searched in the TRD.
489 // If sufficiently long continuation of the track is found in the TRD
490 // the track is updated, otherwise it's stored as originaly defined
491 // by the TPC tracker.
494 Int_t found = 0; // number of tracks found
495 Float_t foundMin = 20.0;
496 Int_t n = event->GetNumberOfTracks();
499 Float_t *quality = new Float_t[n];
500 Int_t *index = new Int_t[n];
501 for (Int_t i = 0; i < n; i++) {
502 AliESDtrack *seed = event->GetTrack(i);
503 Double_t covariance[15];
504 seed->GetExternalCovariance(covariance);
505 quality[i] = covariance[0]+covariance[2];
506 //quality[i] = covariance[0];
508 TMath::Sort(n,quality,index,kFALSE);
510 for (Int_t i = 0; i < n; i++) {
512 //AliESDtrack *seed = event->GetTrack(i);
513 AliESDtrack *seed = event->GetTrack(index[i]);
516 ULong_t status = seed->GetStatus();
517 if ((status & AliESDtrack::kTPCout) == 0) {
522 if ((status & AliESDtrack::kTRDout) != 0) {
527 Int_t lbl = seed->GetLabel();
528 AliTRDtrack *track = new AliTRDtrack(*seed);
529 track->SetSeedLabel(lbl);
530 seed->UpdateTrackParams(track,AliESDtrack::kTRDbackup); // Make backup
532 Float_t p4 = track->GetC();
533 Int_t expectedClr = FollowBackProlongation(*track);
536 fHX->Fill(track->GetX());
539 // store the last measurement
541 fHNClTrack->Fill(track->GetNumberOfClusters());
542 if (track->GetNumberOfClusters() >= foundMin) {
546 CookdEdxTimBin(*track);
547 CookLabel(track,1 - fgkLabelFraction);
548 if (track->GetBackupTrack()) {
549 //fHBackfit->Fill(5);
550 UseClusters(track->GetBackupTrack());
551 seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup);
557 // inter-tracks competition ???
558 if ((TMath::Abs(track->GetC() - p4) / TMath::Abs(p4) < 0.2) ||
559 (track->Pt() > 0.8)) {
564 // Make backup for back propagation
567 Int_t foundClr = track->GetNumberOfClusters();
568 if (foundClr >= foundMin) {
570 track->CookdEdxTimBin(seed->GetID()); // A.Bercuci 25.07.07
571 CookLabel(track,1 - fgkLabelFraction);
572 if (track->GetBackupTrack()) {
573 UseClusters(track->GetBackupTrack());
576 // Sign only gold tracks
577 if (track->GetChi2() / track->GetNumberOfClusters() < 4) {
578 if ((seed->GetKinkIndex(0) == 0) &&
579 (track->Pt() < 1.5)) {
583 Bool_t isGold = kFALSE;
586 if (track->GetChi2() / track->GetNumberOfClusters() < 5) {
587 //seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup);
588 if (track->GetBackupTrack()) {
589 seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup);
598 (track->GetNCross() == 0) &&
599 (track->GetChi2() / track->GetNumberOfClusters() < 7)) {
600 //seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup);
601 if (track->GetBackupTrack()) {
602 seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup);
608 (track->GetBackupTrack())) {
609 if ((track->GetBackupTrack()->GetNumberOfClusters() > foundMin) &&
610 ((track->GetBackupTrack()->GetChi2()/(track->GetBackupTrack()->GetNumberOfClusters()+1)) < 7)) {
611 seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup);
616 if ((track->StatusForTOF() > 0) &&
617 (track->GetNCross() == 0) &&
618 (Float_t(track->GetNumberOfClusters()) / Float_t(track->GetNExpected()) > 0.4)) {
619 //seed->UpdateTrackParams(track->GetBackupTrack(), AliESDtrack::kTRDbackup);
627 // Debug part of tracking
628 TTreeSRedirector &cstream = *fDebugStreamer;
629 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.
630 if (AliTRDReconstructor::StreamLevel() > 0) {
631 if (track->GetBackupTrack()) {
633 << "EventNrInFile=" << eventNrInFile
636 << "trdback.=" << track->GetBackupTrack()
641 << "EventNrInFile=" << eventNrInFile
644 << "trdback.=" << track
650 // Propagation to the TOF (I.Belikov)
651 if (track->GetStop() == kFALSE) {
654 Double_t xtof = 371.0;
655 Double_t xTOF0 = 370.0;
657 Double_t c2 = track->GetSnp() + track->GetC() * (xtof - track->GetX());
658 if (TMath::Abs(c2) >= 0.99) {
665 PropagateToX(*track,xTOF0,fgkMaxStep);
667 // Energy losses taken to the account - check one more time
668 c2 = track->GetSnp() + track->GetC() * (xtof - track->GetX());
669 if (TMath::Abs(c2) >= 0.99) {
676 //if (!PropagateToX(*track,xTOF0,fgkMaxStep)) {
677 // fHBackfit->Fill(7);
682 Double_t ymax = xtof * TMath::Tan(0.5 * AliTRDgeometry::GetAlpha());
684 track->GetYAt(xtof,GetBz(),y);
686 if (!track->Rotate( AliTRDgeometry::GetAlpha())) {
692 else if (y < -ymax) {
693 if (!track->Rotate(-AliTRDgeometry::GetAlpha())) {
700 if (track->PropagateTo(xtof)) {
701 seed->UpdateTrackParams(track,AliESDtrack::kTRDout);
704 for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
705 for (Int_t j = 0; j < AliESDtrack::kNSlice; j++) {
706 seed->SetTRDsignals(track->GetPIDsignals(i,j),i,j);
708 seed->SetTRDTimBin(track->GetPIDTimBin(i),i);
710 //seed->SetTRDtrack(new AliTRDtrack(*track));
711 if (track->GetNumberOfClusters() > foundMin) {
722 if ((track->GetNumberOfClusters() > 15) &&
723 (track->GetNumberOfClusters() > 0.5*expectedClr)) {
725 seed->UpdateTrackParams(track,AliESDtrack::kTRDout);
728 //seed->SetStatus(AliESDtrack::kTRDStop);
729 for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
730 for (Int_t j = 0; j <AliESDtrack::kNSlice; j++) {
731 seed->SetTRDsignals(track->GetPIDsignals(i,j),i,j);
733 seed->SetTRDTimBin(track->GetPIDTimBin(i),i);
735 //seed->SetTRDtrack(new AliTRDtrack(*track));
741 seed->SetTRDQuality(track->StatusForTOF());
742 seed->SetTRDBudget(track->GetBudget(0));
748 AliInfo(Form("Number of seeds: %d",fNseeds));
749 AliInfo(Form("Number of back propagated TRD tracks: %d",found));
752 if (AliTRDReconstructor::SeedingOn()) {
753 MakeSeedsMI(3,5,event);
767 //_____________________________________________________________________________
768 Int_t AliTRDtracker::RefitInward(AliESDEvent *event)
771 // Refits tracks within the TRD. The ESD event is expected to contain seeds
772 // at the outer part of the TRD.
773 // The tracks are propagated to the innermost time bin
774 // of the TRD and the ESD event is updated
775 // Origin: Thomas KUHR (Thomas.Kuhr@cern.ch)
778 Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins();
779 Float_t foundMin = fgkMinClustersInTrack * timeBins;
783 //Int_t innerTB = fTrSec[0]->GetInnerTimeBin();
786 Int_t n = event->GetNumberOfTracks();
787 for (Int_t i = 0; i < n; i++) {
789 AliESDtrack *seed = event->GetTrack(i);
790 new (&seed2) AliTRDtrack(*seed);
793 if (seed2.GetX() < 270.0) {
794 seed->UpdateTrackParams(&seed2,AliESDtrack::kTRDbackup); // Backup TPC track - only update
799 ULong_t status = seed->GetStatus();
800 if ((status & AliESDtrack::kTRDout) == 0) {
804 if ((status & AliESDtrack::kTRDin) != 0) {
812 seed2.ResetCovariance(50.0);
814 AliTRDtrack *pt = new AliTRDtrack(seed2,seed2.GetAlpha());
815 Int_t *indexes2 = seed2.GetIndexes();
816 for (Int_t i = 0; i < AliESDtrack::kNPlane;i++) {
817 for (Int_t j = 0; j < AliESDtrack::kNSlice;j++) {
818 pt->SetPIDsignals(seed2.GetPIDsignals(i,j),i,j);
820 pt->SetPIDTimBin(seed2.GetPIDTimBin(i),i);
823 Int_t *indexes3 = pt->GetBackupIndexes();
824 for (Int_t i = 0; i < 200;i++) {
825 if (indexes2[i] == 0) {
828 indexes3[i] = indexes2[i];
831 //AliTRDtrack *pt = seed2;
832 //AliTRDtrack &t = *pt;
833 FollowProlongation(*pt);
834 //if (pt->GetNumberOfClusters() >= foundMin) {
836 //CookLabel(pt, 1-fgkLabelFraction);
838 pt->CookdEdxTimBin(seed->GetID());
839 pt->SetPIDMethod(AliTRDtrack::kLQ); //switch between TRD PID methods
841 //pt->Calibrate(); // slot for calibration
845 Double_t xTPC = 250.0;
846 if (PropagateToX(*pt,xTPC,fgkMaxStep)) {
848 seed->UpdateTrackParams(pt,AliESDtrack::kTRDrefit);
851 for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
852 for (Int_t j = 0; j < AliESDtrack::kNSlice; j++) {
853 seed->SetTRDsignals(pt->GetPIDsignals(i,j),i,j);
855 seed->SetTRDTimBin(pt->GetPIDTimBin(i),i);
859 // If not prolongation to TPC - propagate without update
861 AliTRDtrack *seed2 = new AliTRDtrack(*seed);
862 seed2->ResetCovariance(5.0);
863 AliTRDtrack *pt2 = new AliTRDtrack(*seed2,seed2->GetAlpha());
865 if (PropagateToX(*pt2,xTPC,fgkMaxStep)) {
867 pt2->CookdEdxTimBin(seed->GetID());
868 seed->UpdateTrackParams(pt2,AliESDtrack::kTRDrefit);
871 for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
872 for (Int_t j = 0; j < AliESDtrack::kNSlice; j++) {
873 seed->SetTRDsignals(pt2->GetPIDsignals(i,j),i,j);
875 seed->SetTRDTimBin(pt2->GetPIDTimBin(i),i);
879 // Add TRD track to ESDfriendTrack - maybe this tracks are not useful for post-processing - TODO make decission
880 if (AliTRDReconstructor::StreamLevel() > 0) {
881 seed->AddCalibObject(new AliTRDtrack(*pt2/*, kTRUE*/));
886 // Add TRD track to ESDfriendTrack
887 if (AliTRDReconstructor::StreamLevel() > 0) {
888 seed->AddCalibObject(new AliTRDtrack(*pt/*, kTRUE*/));
894 AliInfo(Form("Number of loaded seeds: %d",nseed));
895 AliInfo(Form("Number of found tracks from loaded seeds: %d",found));
901 //_____________________________________________________________________________
902 Int_t AliTRDtracker::FollowProlongation(AliTRDtrack &t)
905 // Starting from current position on track=t this function tries
906 // to extrapolate the track up to timeBin=0 and to confirm prolongation
907 // if a close cluster is found. Returns the number of clusters
908 // expected to be found in sensitive layers
909 // GeoManager used to estimate mean density
913 Int_t lastplane = GetLastPlane(&t);
916 Int_t expectedNumberOfClusters = 0;
918 for (Int_t iplane = lastplane; iplane >= 0; iplane--) {
920 Int_t row0 = GetGlobalTimeBin(0,iplane,GetTimeBinsPerPlane()-1);
921 Int_t rowlast = GetGlobalTimeBin(0,iplane,0);
924 // Propagate track close to the plane if neccessary
926 Double_t currentx = fTrSec[0]->GetLayer(rowlast)->GetX();
927 if (currentx < (-fgkMaxStep + t.GetX())) {
928 // Propagate closer to chamber - safety space fgkMaxStep
929 if (!PropagateToX(t,currentx+fgkMaxStep,fgkMaxStep)) {
934 if (!AdjustSector(&t)) {
939 // Get material budget
948 // Starting global position
950 // End global position
951 x = fTrSec[0]->GetLayer(row0)->GetX();
952 if (!t.GetProlongation(x,y,z)) {
955 xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha());
956 xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha());
958 AliTracker::MeanMaterialBudget(xyz0,xyz1,param);
959 xrho= param[0]*param[4];
960 xx0 = param[1]; // Get mean propagation parameters
961 // A.Bercuci 25.07.07
962 // Flags for marking the track momentum and direction. The track is
963 // marked only if it has at least 1 cluster picked up in the current
965 Bool_t kUPDATED = kFALSE, kMARKED = kFALSE;
968 // Propagate and update
970 sector = t.GetSector();
971 //for (Int_t itime=GetTimeBinsPerPlane()-1;itime>=0;itime--) {
972 for (Int_t itime = 0 ; itime < GetTimeBinsPerPlane(); itime++) {
973 // A.Bercuci 25.07.07
974 // Mark track kinematics
975 if(itime > 10 && kUPDATED && !kMARKED){
976 t.SetTrackSegmentDirMom(iplane);
980 Int_t ilayer = GetGlobalTimeBin(0,iplane,itime);
981 expectedNumberOfClusters++;
982 t.SetNExpected(t.GetNExpected() + 1);
983 if (t.GetX() > 345.0) {
984 t.SetNExpectedLast(t.GetNExpectedLast() + 1);
986 AliTRDpropagationLayer &timeBin = *(fTrSec[sector]->GetLayer(ilayer));
987 AliTRDcluster *cl = 0;
989 Double_t maxChi2 = fgkMaxChi2;
994 AliTRDcluster *cl0 = timeBin[0];
996 // No clusters in given time bin
1000 Int_t plane = fGeom->GetPlane(cl0->GetDetector());
1001 if (plane > lastplane) {
1005 Int_t timebin = cl0->GetLocalTimeBin();
1006 AliTRDcluster *cl2 = GetCluster(&t,plane,timebin,index);
1010 //Double_t h01 = GetTiltFactor(cl); //I.B's fix
1011 //maxChi2=t.GetPredictedChi2(cl,h01);
1014 //if (cl->GetNPads()<5)
1015 Double_t dxsample = timeBin.GetdX();
1016 t.SetSampledEdx(TMath::Abs(cl->GetQ()/dxsample));
1017 Double_t h01 = GetTiltFactor(cl);
1018 Int_t det = cl->GetDetector();
1019 Int_t plane = fGeom->GetPlane(det);
1020 if (t.GetX() > 345.0) {
1021 t.SetNLast(t.GetNLast() + 1);
1022 t.SetChi2Last(t.GetChi2Last() + maxChi2);
1025 Double_t xcluster = cl->GetX();
1026 t.PropagateTo(xcluster,xx0,xrho);
1028 if (!AdjustSector(&t)) {
1031 maxChi2 = t.GetPredictedChi2(cl,h01);
1034 if (!t.UpdateMI(cl,maxChi2,index,h01,plane)) {
1037 // A.Bercuci 25.07.07
1038 //SetCluster(cl, GetNumberOfClusters()-1);
1046 return expectedNumberOfClusters;
1049 //_____________________________________________________________________________
1050 Int_t AliTRDtracker::FollowBackProlongation(AliTRDtrack &t)
1053 // Starting from current radial position of track <t> this function
1054 // extrapolates the track up to outer timebin and in the sensitive
1055 // layers confirms prolongation if a close cluster is found.
1056 // Returns the number of clusters expected to be found in sensitive layers
1057 // Use GEO manager for material Description
1059 // return number of assigned clusters ?
1064 Int_t clusters[1000];
1066 Double_t xrho = 0.0;
1067 Int_t expectedNumberOfClusters = 0;
1068 Float_t ratio0 = 0.0;
1069 AliTRDtracklet tracklet;
1071 // Calibration fill 2D
1072 AliTRDCalibraFillHisto *calibra = AliTRDCalibraFillHisto::Instance();
1074 AliInfo("Could not get Calibra instance\n");
1076 if (calibra->GetMITracking()) {
1077 calibra->ResetTrack();
1080 for (Int_t i = 0; i < 1000; i++) {
1084 for (Int_t iplane = 0; iplane < AliESDtrack::kNPlane; iplane++) {
1086 int hb = iplane * 10;
1087 fHClSearch->Fill(hb);
1089 Int_t row0 = GetGlobalTimeBin(0,iplane,GetTimeBinsPerPlane()-1);
1090 Int_t rowlast = GetGlobalTimeBin(0,iplane,0);
1091 Double_t currentx = fTrSec[0]->GetLayer(row0)->GetX();
1092 if (currentx < t.GetX()) {
1093 fHClSearch->Fill(hb+1);
1098 // Propagate closer to chamber if neccessary
1100 if (currentx > (fgkMaxStep + t.GetX())) {
1101 if (!PropagateToX(t,currentx-fgkMaxStep,fgkMaxStep)) {
1102 fHClSearch->Fill(hb+2);
1106 if (!AdjustSector(&t)) {
1107 fHClSearch->Fill(hb+3);
1110 if (TMath::Abs(t.GetSnp()) > fgkMaxSnp) {
1111 fHClSearch->Fill(hb+4);
1116 // Get material budget inside of chamber
1124 // Starting global position
1126 // End global position
1127 x = fTrSec[0]->GetLayer(rowlast)->GetX();
1128 if (!t.GetProlongation(x,y,z)) {
1129 fHClSearch->Fill(hb+5);
1132 xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha());
1133 xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha());
1135 AliTracker::MeanMaterialBudget(xyz0,xyz1,param);
1136 xrho = param[0]*param[4];
1137 xx0 = param[1]; // Get mean propagation parameters
1142 sector = t.GetSector();
1143 Float_t ncl = FindClusters(sector,row0,rowlast,&t,clusters,tracklet);
1144 fHNCl->Fill(tracklet.GetN());
1146 if (tracklet.GetN() < GetTimeBinsPerPlane()/3) {
1147 fHClSearch->Fill(hb+6);
1152 // Propagate and update track
1154 for (Int_t itime = GetTimeBinsPerPlane()-1; itime >= 0; itime--) {
1156 Int_t ilayer = GetGlobalTimeBin(0, iplane,itime);
1157 expectedNumberOfClusters++;
1158 t.SetNExpected(t.GetNExpected() + 1);
1159 if (t.GetX() > 345.0) {
1160 t.SetNExpectedLast(t.GetNExpectedLast() + 1);
1162 AliTRDpropagationLayer &timeBin = *(fTrSec[sector]->GetLayer(ilayer));
1163 AliTRDcluster *cl = 0;
1165 Double_t maxChi2 = fgkMaxChi2;
1170 if (clusters[ilayer] > 0) {
1171 index = clusters[ilayer];
1172 cl = (AliTRDcluster *)GetCluster(index);
1173 //Double_t h01 = GetTiltFactor(cl); // I.B's fix
1174 //maxChi2=t.GetPredictedChi2(cl,h01); //
1179 //if (cl->GetNPads() < 5)
1180 Double_t dxsample = timeBin.GetdX();
1181 t.SetSampledEdx(TMath::Abs(cl->GetQ()/dxsample));
1182 Double_t h01 = GetTiltFactor(cl);
1183 Int_t det = cl->GetDetector();
1184 Int_t plane = fGeom->GetPlane(det);
1185 if (t.GetX() > 345.0) {
1186 t.SetNLast(t.GetNLast() + 1);
1187 t.SetChi2Last(t.GetChi2Last() + maxChi2);
1189 Double_t xcluster = cl->GetX();
1190 t.PropagateTo(xcluster,xx0,xrho);
1191 maxChi2 = t.GetPredictedChi2(cl,h01);
1194 if (!t.UpdateMI(cl,maxChi2,index,h01,plane)) {
1195 if (!t.Update(cl,maxChi2,index,h01)) {
1198 } // else SetCluster(cl, GetNumberOfClusters()-1); // A.Bercuci 25.07.07
1201 if (calibra->GetMITracking()) {
1202 calibra->UpdateHistograms(cl,&t);
1205 // Reset material budget if 2 consecutive gold
1207 if ((t.GetTracklets(plane).GetN() + t.GetTracklets(plane-1).GetN()) > 20) {
1218 ratio0 = ncl / Float_t(fTimeBinsPerPlane);
1219 Float_t ratio1 = Float_t(t.GetNumberOfClusters()+1) / Float_t(t.GetNExpected()+1);
1220 if ((tracklet.GetChi2() < 18.0) &&
1223 (ratio0+ratio1 > 1.5) &&
1224 (t.GetNCross() == 0) &&
1225 (TMath::Abs(t.GetSnp()) < 0.85) &&
1226 (t.GetNumberOfClusters() > 20)){
1227 //if (ratio0 > 0.8) {
1228 t.MakeBackupTrack(); // Make backup of the track until is gold
1233 return expectedNumberOfClusters;
1236 //_____________________________________________________________________________
1237 Int_t AliTRDtracker::PropagateToX(AliTRDtrack &t, Double_t xToGo, Double_t maxStep)
1240 // Starting from current radial position of track <t> this function
1241 // extrapolates the track up to radial position <xToGo>.
1242 // Returns 1 if track reaches the plane, and 0 otherwise
1245 const Double_t kEpsilon = 0.00001;
1246 //Double_t tanmax = TMath::Tan(0.5*AliTRDgeometry::GetAlpha());
1247 Double_t xpos = t.GetX();
1248 Double_t dir = (xpos<xToGo) ? 1.0 : -1.0;
1250 while (((xToGo-xpos)*dir) > kEpsilon) {
1252 Double_t step = dir * TMath::Min(TMath::Abs(xToGo-xpos),maxStep);
1260 // Starting global position
1264 if (!t.GetProlongation(x,y,z)) {
1265 return 0; // No prolongation
1268 xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha());
1269 xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha());
1272 AliTracker::MeanMaterialBudget(xyz0,xyz1,param);
1273 if (!t.PropagateTo(x,param[1],param[0]*param[4])) {
1285 //_____________________________________________________________________________
1286 Int_t AliTRDtracker::LoadClusters(TTree *cTree)
1289 // Fills clusters into TRD tracking_sectors
1290 // Note that the numbering scheme for the TRD tracking_sectors
1291 // differs from that of TRD sectors
1294 if (ReadClusters(fClusters,cTree)) {
1295 AliError("Problem with reading the clusters !");
1298 Int_t ncl = fClusters->GetEntriesFast();
1300 AliInfo(Form("Sorting %d clusters",ncl));
1303 for (Int_t ichamber = 0; ichamber < 5; ichamber++) {
1304 for (Int_t isector = 0; isector < 18; isector++) {
1305 fHoles[ichamber][isector] = kTRUE;
1311 AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(ncl);
1312 Int_t detector = c->GetDetector();
1313 Int_t localTimeBin = c->GetLocalTimeBin();
1314 Int_t sector = fGeom->GetSector(detector);
1315 Int_t plane = fGeom->GetPlane(detector);
1316 Int_t trackingSector = sector;
1318 if (c->GetQ() > 10) {
1319 Int_t chamber = fGeom->GetChamber(detector);
1320 fHoles[chamber][trackingSector] = kFALSE;
1323 Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(plane,localTimeBin);
1327 Int_t layer = fTrSec[trackingSector]->GetLayerNumber(gtb);
1331 fHXCl->Fill(c->GetX());
1333 fTrSec[trackingSector]->GetLayer(layer)->SetX(c->GetX());
1334 fTrSec[trackingSector]->GetLayer(layer)->InsertCluster(c,index);
1342 //_____________________________________________________________________________
1343 void AliTRDtracker::UnloadClusters()
1346 // Clears the arrays of clusters and tracks. Resets sectors and timebins
1352 nentr = fClusters->GetEntriesFast();
1353 for (i = 0; i < nentr; i++) {
1354 delete fClusters->RemoveAt(i);
1358 nentr = fSeeds->GetEntriesFast();
1359 for (i = 0; i < nentr; i++) {
1360 delete fSeeds->RemoveAt(i);
1363 nentr = fTracks->GetEntriesFast();
1364 for (i = 0; i < nentr; i++) {
1365 delete fTracks->RemoveAt(i);
1368 Int_t nsec = AliTRDgeometry::kNsect;
1369 for (i = 0; i < nsec; i++) {
1370 for(Int_t pl = 0; pl < fTrSec[i]->GetNumberOfLayers(); pl++) {
1371 fTrSec[i]->GetLayer(pl)->Clear();
1377 //_____________________________________________________________________________
1378 void AliTRDtracker::MakeSeedsMI(Int_t /*inner*/, Int_t /*outer*/, AliESDEvent *esd)
1381 // Creates seeds using clusters between position inner plane and outer plane
1384 const Double_t kMaxTheta = 1.0;
1385 const Double_t kMaxPhi = 2.0;
1387 const Double_t kRoad0y = 6.0; // Road for middle cluster
1388 const Double_t kRoad0z = 8.5; // Road for middle cluster
1390 const Double_t kRoad1y = 2.0; // Road in y for seeded cluster
1391 const Double_t kRoad1z = 20.0; // Road in z for seeded cluster
1393 const Double_t kRoad2y = 3.0; // Road in y for extrapolated cluster
1394 const Double_t kRoad2z = 20.0; // Road in z for extrapolated cluster
1395 const Int_t kMaxSeed = 3000;
1397 Int_t maxSec = AliTRDgeometry::kNsect;
1399 // Linear fitters in planes
1400 TLinearFitter fitterTC(2,"hyp2"); // Fitting with tilting pads - kz fixed - kz= Z/x, + vertex const
1401 TLinearFitter fitterT2(4,"hyp4"); // Fitting with tilting pads - kz not fixed
1402 fitterTC.StoreData(kTRUE);
1403 fitterT2.StoreData(kTRUE);
1404 AliRieman rieman(1000); // Rieman fitter
1405 AliRieman rieman2(1000); // Rieman fitter
1407 // Find the maximal and minimal layer for the planes
1409 AliTRDpropagationLayer *reflayers[6];
1410 for (Int_t i = 0; i < 6; i++) {
1411 layers[i][0] = 10000;
1414 for (Int_t ns = 0; ns < maxSec; ns++) {
1415 for (Int_t ilayer = 0; ilayer < fTrSec[ns]->GetNumberOfLayers(); ilayer++) {
1416 AliTRDpropagationLayer &layer = *(fTrSec[ns]->GetLayer(ilayer));
1420 Int_t det = layer[0]->GetDetector();
1421 Int_t plane = fGeom->GetPlane(det);
1422 if (ilayer < layers[plane][0]) {
1423 layers[plane][0] = ilayer;
1425 if (ilayer > layers[plane][1]) {
1426 layers[plane][1] = ilayer;
1431 AliTRDpadPlane *padPlane = fGeom->GetPadPlane(0,0);
1432 Double_t h01 = TMath::Tan(-TMath::Pi() / 180.0 * padPlane->GetTiltingAngle());
1433 Double_t hL[6]; // Tilting angle
1434 Double_t xcl[6]; // X - position of reference cluster
1435 Double_t ycl[6]; // Y - position of reference cluster
1436 Double_t zcl[6]; // Z - position of reference cluster
1438 AliTRDcluster *cl[6] = { 0, 0, 0, 0, 0, 0 }; // Seeding clusters
1439 Float_t padlength[6] = { 10.0, 10.0, 10.0, 10.0, 10.0, 10.0 }; // Current pad-length
1441 Double_t chi2R = 0.0;
1442 Double_t chi2Z = 0.0;
1443 Double_t chi2RF = 0.0;
1444 Double_t chi2ZF = 0.0;
1446 Int_t nclusters; // Total number of clusters
1447 for (Int_t i = 0; i < 6; i++) {
1455 AliTRDseed *pseed = new AliTRDseed[kMaxSeed*6];
1456 AliTRDseed *seed[kMaxSeed];
1457 for (Int_t iseed = 0; iseed < kMaxSeed; iseed++) {
1458 seed[iseed]= &pseed[iseed*6];
1460 AliTRDseed *cseed = seed[0];
1462 Double_t seedquality[kMaxSeed];
1463 Double_t seedquality2[kMaxSeed];
1464 Double_t seedparams[kMaxSeed][7];
1465 Int_t seedlayer[kMaxSeed];
1466 Int_t registered = 0;
1467 Int_t sort[kMaxSeed];
1472 for (Int_t ns = 0; ns < maxSec; ns++) { // Loop over sectors
1473 //for (Int_t ns = 0; ns < 5; ns++) { // Loop over sectors
1475 registered = 0; // Reset registerd seed counter
1476 cseed = seed[registered];
1479 for (Int_t sLayer = 2; sLayer >= 0; sLayer--) {
1480 //for (Int_t dseed = 5; dseed < 15; dseed += 3) {
1483 Int_t dseed = 5 + Int_t(iter) * 3;
1485 // Initialize seeding layers
1486 for (Int_t ilayer = 0; ilayer < 6; ilayer++) {
1487 reflayers[ilayer] = fTrSec[ns]->GetLayer(layers[ilayer][1]-dseed);
1488 xcl[ilayer] = reflayers[ilayer]->GetX();
1491 Double_t xref = (xcl[sLayer+1] + xcl[sLayer+2]) * 0.5;
1492 AliTRDpropagationLayer &layer0 = *reflayers[sLayer+0];
1493 AliTRDpropagationLayer &layer1 = *reflayers[sLayer+1];
1494 AliTRDpropagationLayer &layer2 = *reflayers[sLayer+2];
1495 AliTRDpropagationLayer &layer3 = *reflayers[sLayer+3];
1497 Int_t maxn3 = layer3;
1498 for (Int_t icl3 = 0; icl3 < maxn3; icl3++) {
1500 AliTRDcluster *cl3 = layer3[icl3];
1504 padlength[sLayer+3] = TMath::Sqrt(cl3->GetSigmaZ2() * 12.0);
1505 ycl[sLayer+3] = cl3->GetY();
1506 zcl[sLayer+3] = cl3->GetZ();
1507 Float_t yymin0 = ycl[sLayer+3] - 1.0 - kMaxPhi * (xcl[sLayer+3]-xcl[sLayer+0]);
1508 Float_t yymax0 = ycl[sLayer+3] + 1.0 + kMaxPhi * (xcl[sLayer+3]-xcl[sLayer+0]);
1509 Int_t maxn0 = layer0;
1511 for (Int_t icl0 = layer0.Find(yymin0); icl0 < maxn0; icl0++) {
1513 AliTRDcluster *cl0 = layer0[icl0];
1517 if (cl3->IsUsed() && cl0->IsUsed()) {
1520 ycl[sLayer+0] = cl0->GetY();
1521 zcl[sLayer+0] = cl0->GetZ();
1522 if (ycl[sLayer+0] > yymax0) {
1525 Double_t tanphi = (ycl[sLayer+3]-ycl[sLayer+0]) / (xcl[sLayer+3]-xcl[sLayer+0]);
1526 if (TMath::Abs(tanphi) > kMaxPhi) {
1529 Double_t tantheta = (zcl[sLayer+3]-zcl[sLayer+0]) / (xcl[sLayer+3]-xcl[sLayer+0]);
1530 if (TMath::Abs(tantheta) > kMaxTheta) {
1533 padlength[sLayer+0] = TMath::Sqrt(cl0->GetSigmaZ2() * 12.0);
1535 // Expected position in 1 layer
1536 Double_t y1exp = ycl[sLayer+0] + (tanphi) * (xcl[sLayer+1]-xcl[sLayer+0]);
1537 Double_t z1exp = zcl[sLayer+0] + (tantheta) * (xcl[sLayer+1]-xcl[sLayer+0]);
1538 Float_t yymin1 = y1exp - kRoad0y - tanphi;
1539 Float_t yymax1 = y1exp + kRoad0y + tanphi;
1540 Int_t maxn1 = layer1;
1542 for (Int_t icl1 = layer1.Find(yymin1); icl1 < maxn1; icl1++) {
1544 AliTRDcluster *cl1 = layer1[icl1];
1549 if (cl3->IsUsed()) nusedCl++;
1550 if (cl0->IsUsed()) nusedCl++;
1551 if (cl1->IsUsed()) nusedCl++;
1555 ycl[sLayer+1] = cl1->GetY();
1556 zcl[sLayer+1] = cl1->GetZ();
1557 if (ycl[sLayer+1] > yymax1) {
1560 if (TMath::Abs(ycl[sLayer+1]-y1exp) > kRoad0y+tanphi) {
1563 if (TMath::Abs(zcl[sLayer+1]-z1exp) > kRoad0z) {
1566 padlength[sLayer+1] = TMath::Sqrt(cl1->GetSigmaZ2() * 12.0);
1568 Double_t y2exp = ycl[sLayer+0]+(tanphi) * (xcl[sLayer+2]-xcl[sLayer+0]) + (ycl[sLayer+1]-y1exp);
1569 Double_t z2exp = zcl[sLayer+0]+(tantheta) * (xcl[sLayer+2]-xcl[sLayer+0]);
1570 Int_t index2 = layer2.FindNearestCluster(y2exp,z2exp,kRoad1y,kRoad1z);
1574 AliTRDcluster *cl2 = (AliTRDcluster *) GetCluster(index2);
1575 padlength[sLayer+2] = TMath::Sqrt(cl2->GetSigmaZ2() * 12.0);
1576 ycl[sLayer+2] = cl2->GetY();
1577 zcl[sLayer+2] = cl2->GetZ();
1578 if (TMath::Abs(cl2->GetZ()-z2exp) > kRoad0z) {
1583 rieman.AddPoint(xcl[sLayer+0],ycl[sLayer+0],zcl[sLayer+0],1,10);
1584 rieman.AddPoint(xcl[sLayer+1],ycl[sLayer+1],zcl[sLayer+1],1,10);
1585 rieman.AddPoint(xcl[sLayer+3],ycl[sLayer+3],zcl[sLayer+3],1,10);
1586 rieman.AddPoint(xcl[sLayer+2],ycl[sLayer+2],zcl[sLayer+2],1,10);
1590 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
1591 cseed[iLayer].Reset();
1596 for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
1597 cseed[sLayer+iLayer].SetZref(0,rieman.GetZat(xcl[sLayer+iLayer]));
1598 chi2Z += (cseed[sLayer+iLayer].GetZref(0)- zcl[sLayer+iLayer])
1599 * (cseed[sLayer+iLayer].GetZref(0)- zcl[sLayer+iLayer]);
1600 cseed[sLayer+iLayer].SetZref(1,rieman.GetDZat(xcl[sLayer+iLayer]));
1601 cseed[sLayer+iLayer].SetYref(0,rieman.GetYat(xcl[sLayer+iLayer]));
1602 chi2R += (cseed[sLayer+iLayer].GetYref(0)- ycl[sLayer+iLayer])
1603 * (cseed[sLayer+iLayer].GetYref(0)- ycl[sLayer+iLayer]);
1604 cseed[sLayer+iLayer].SetYref(1,rieman.GetDYat(xcl[sLayer+iLayer]));
1606 if (TMath::Sqrt(chi2R) > 1.0/iter) {
1609 if (TMath::Sqrt(chi2Z) > 7.0/iter) {
1613 Float_t minmax[2] = { -100.0, 100.0 };
1614 for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
1615 Float_t max = zcl[sLayer+iLayer]+padlength[sLayer+iLayer] * 0.5
1616 + 1.0 - cseed[sLayer+iLayer].GetZref(0);
1617 if (max < minmax[1]) {
1620 Float_t min = zcl[sLayer+iLayer]-padlength[sLayer+iLayer] * 0.5
1621 - 1.0 - cseed[sLayer+iLayer].GetZref(0);
1622 if (min > minmax[0]) {
1627 Bool_t isFake = kFALSE;
1628 if (cl0->GetLabel(0) != cl3->GetLabel(0)) {
1631 if (cl1->GetLabel(0) != cl3->GetLabel(0)) {
1634 if (cl2->GetLabel(0) != cl3->GetLabel(0)) {
1638 if (AliTRDReconstructor::StreamLevel() > 0) {
1639 if ((!isFake) || ((icl3%10) == 0)) { // Debugging print
1640 TTreeSRedirector &cstream = *fDebugStreamer;
1642 << "isFake=" << isFake
1648 << "X0=" << xcl[sLayer+0]
1649 << "X1=" << xcl[sLayer+1]
1650 << "X2=" << xcl[sLayer+2]
1651 << "X3=" << xcl[sLayer+3]
1652 << "Y2exp=" << y2exp
1653 << "Z2exp=" << z2exp
1654 << "Chi2R=" << chi2R
1655 << "Chi2Z=" << chi2Z
1656 << "Seed0.=" << &cseed[sLayer+0]
1657 << "Seed1.=" << &cseed[sLayer+1]
1658 << "Seed2.=" << &cseed[sLayer+2]
1659 << "Seed3.=" << &cseed[sLayer+3]
1660 << "Zmin=" << minmax[0]
1661 << "Zmax=" << minmax[1]
1666 ////////////////////////////////////////////////////////////////////////////////////
1670 ////////////////////////////////////////////////////////////////////////////////////
1676 Bool_t isOK = kTRUE;
1678 for (Int_t jLayer = 0; jLayer < 4; jLayer++) {
1680 cseed[sLayer+jLayer].SetTilt(hL[sLayer+jLayer]);
1681 cseed[sLayer+jLayer].SetPadLength(padlength[sLayer+jLayer]);
1682 cseed[sLayer+jLayer].SetX0(xcl[sLayer+jLayer]);
1684 for (Int_t iter = 0; iter < 2; iter++) {
1687 // In iteration 0 we try only one pad-row
1688 // If quality not sufficient we try 2 pad-rows - about 5% of tracks cross 2 pad-rows
1690 AliTRDseed tseed = cseed[sLayer+jLayer];
1691 Float_t roadz = padlength[sLayer+jLayer] * 0.5;
1693 roadz = padlength[sLayer+jLayer];
1696 Float_t quality = 10000.0;
1698 for (Int_t iTime = 2; iTime < 20; iTime++) {
1700 AliTRDpropagationLayer &layer = *(fTrSec[ns]->GetLayer(layers[sLayer+jLayer][1]-iTime));
1701 Double_t dxlayer = layer.GetX() - xcl[sLayer+jLayer];
1702 Double_t zexp = cl[sLayer+jLayer]->GetZ();
1705 // Try 2 pad-rows in second iteration
1706 zexp = tseed.GetZref(0) + tseed.GetZref(1) * dxlayer;
1707 if (zexp > cl[sLayer+jLayer]->GetZ()) {
1708 zexp = cl[sLayer+jLayer]->GetZ() + padlength[sLayer+jLayer]*0.5;
1710 if (zexp < cl[sLayer+jLayer]->GetZ()) {
1711 zexp = cl[sLayer+jLayer]->GetZ() - padlength[sLayer+jLayer]*0.5;
1715 Double_t yexp = tseed.GetYref(0) + tseed.GetYref(1) * dxlayer;
1716 Int_t index = layer.FindNearestCluster(yexp,zexp,kRoad1y,roadz);
1720 AliTRDcluster *cl = (AliTRDcluster *) GetCluster(index);
1722 tseed.SetIndexes(iTime,index);
1723 tseed.SetClusters(iTime,cl); // Register cluster
1724 tseed.SetX(iTime,dxlayer); // Register cluster
1725 tseed.SetY(iTime,cl->GetY()); // Register cluster
1726 tseed.SetZ(iTime,cl->GetZ()); // Register cluster
1732 // Count the number of clusters and distortions into quality
1733 Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1);
1734 Float_t tquality = (18.0 - tseed.GetN2()) / 2.0 + TMath::Abs(dangle) / 0.1
1735 + TMath::Abs(tseed.GetYfit(0) - tseed.GetYref(0)) / 0.2
1736 + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer];
1737 if ((iter == 0) && tseed.IsOK()) {
1738 cseed[sLayer+jLayer] = tseed;
1744 if (tseed.IsOK() && (tquality < quality)) {
1745 cseed[sLayer+jLayer] = tseed;
1750 if (!cseed[sLayer+jLayer].IsOK()) {
1755 cseed[sLayer+jLayer].CookLabels();
1756 cseed[sLayer+jLayer].UpdateUsed();
1757 nusedCl += cseed[sLayer+jLayer].GetNUsed();
1769 for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
1770 if (cseed[sLayer+iLayer].IsOK()) {
1771 nclusters += cseed[sLayer+iLayer].GetN2();
1777 for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
1778 rieman.AddPoint(xcl[sLayer+iLayer]
1779 ,cseed[sLayer+iLayer].GetYfitR(0)
1780 ,cseed[sLayer+iLayer].GetZProb()
1789 for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
1790 cseed[sLayer+iLayer].SetYref(0,rieman.GetYat(xcl[sLayer+iLayer]));
1791 chi2R += (cseed[sLayer+iLayer].GetYref(0) - cseed[sLayer+iLayer].GetYfitR(0))
1792 * (cseed[sLayer+iLayer].GetYref(0) - cseed[sLayer+iLayer].GetYfitR(0));
1793 cseed[sLayer+iLayer].SetYref(1,rieman.GetDYat(xcl[sLayer+iLayer]));
1794 cseed[sLayer+iLayer].SetZref(0,rieman.GetZat(xcl[sLayer+iLayer]));
1795 chi2Z += (cseed[sLayer+iLayer].GetZref(0) - cseed[sLayer+iLayer].GetMeanz())
1796 * (cseed[sLayer+iLayer].GetZref(0) - cseed[sLayer+iLayer].GetMeanz());
1797 cseed[sLayer+iLayer].SetZref(1,rieman.GetDZat(xcl[sLayer+iLayer]));
1799 Double_t curv = rieman.GetC();
1804 Double_t sumda = TMath::Abs(cseed[sLayer+0].GetYfitR(1) - cseed[sLayer+0].GetYref(1))
1805 + TMath::Abs(cseed[sLayer+1].GetYfitR(1) - cseed[sLayer+1].GetYref(1))
1806 + TMath::Abs(cseed[sLayer+2].GetYfitR(1) - cseed[sLayer+2].GetYref(1))
1807 + TMath::Abs(cseed[sLayer+3].GetYfitR(1) - cseed[sLayer+3].GetYref(1));
1808 Double_t likea = TMath::Exp(-sumda*10.6);
1809 Double_t likechi2 = 0.0000000001;
1811 likechi2 += TMath::Exp(-TMath::Sqrt(chi2R) * 7.73);
1813 Double_t likechi2z = TMath::Exp(-chi2Z * 0.088) / TMath::Exp(-chi2Z * 0.019);
1814 Double_t likeN = TMath::Exp(-(72 - nclusters) * 0.19);
1815 Double_t like = likea * likechi2 * likechi2z * likeN;
1816 Double_t likePrimY = TMath::Exp(-TMath::Abs(cseed[sLayer+0].GetYref(1) - 130.0*curv) * 1.9);
1817 Double_t likePrimZ = TMath::Exp(-TMath::Abs(cseed[sLayer+0].GetZref(1)
1818 - cseed[sLayer+0].GetZref(0) / xcl[sLayer+0]) * 5.9);
1819 Double_t likePrim = TMath::Max(likePrimY*likePrimZ,0.0005);
1821 seedquality[registered] = like;
1822 seedlayer[registered] = sLayer;
1823 if (TMath::Log(0.000000000000001 + like) < -15) {
1826 AliTRDseed seedb[6];
1827 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
1828 seedb[iLayer] = cseed[iLayer];
1831 ////////////////////////////////////////////////////////////////////////////////////
1833 // Full track fit part
1835 ////////////////////////////////////////////////////////////////////////////////////
1842 // Add new layers - avoid long extrapolation
1844 Int_t tLayer[2] = { 0, 0 };
1858 for (Int_t iLayer = 0; iLayer < 2; iLayer++) {
1859 Int_t jLayer = tLayer[iLayer]; // Set tracking layer
1860 cseed[jLayer].Reset();
1861 cseed[jLayer].SetTilt(hL[jLayer]);
1862 cseed[jLayer].SetPadLength(padlength[jLayer]);
1863 cseed[jLayer].SetX0(xcl[jLayer]);
1864 // Get pad length and rough cluster
1865 Int_t indexdummy = reflayers[jLayer]->FindNearestCluster(cseed[jLayer].GetYref(0)
1866 ,cseed[jLayer].GetZref(0)
1869 if (indexdummy <= 0) {
1872 AliTRDcluster *cldummy = (AliTRDcluster *) GetCluster(indexdummy);
1873 padlength[jLayer] = TMath::Sqrt(cldummy->GetSigmaZ2() * 12.0);
1875 AliTRDseed::FitRiemanTilt(cseed,kTRUE);
1877 for (Int_t iLayer = 0; iLayer < 2; iLayer++) {
1879 Int_t jLayer = tLayer[iLayer]; // set tracking layer
1880 if ((jLayer == 0) && !(cseed[1].IsOK())) {
1881 continue; // break not allowed
1883 if ((jLayer == 5) && !(cseed[4].IsOK())) {
1884 continue; // break not allowed
1886 Float_t zexp = cseed[jLayer].GetZref(0);
1887 Double_t zroad = padlength[jLayer] * 0.5 + 1.0;
1889 for (Int_t iter = 0; iter < 2; iter++) {
1891 AliTRDseed tseed = cseed[jLayer];
1892 Float_t quality = 10000.0;
1894 for (Int_t iTime = 2; iTime < 20; iTime++) {
1895 AliTRDpropagationLayer &layer = *(fTrSec[ns]->GetLayer(layers[jLayer][1]-iTime));
1896 Double_t dxlayer = layer.GetX()-xcl[jLayer];
1897 Double_t yexp = tseed.GetYref(0) + tseed.GetYref(1) * dxlayer;
1898 Float_t yroad = kRoad1y;
1899 Int_t index = layer.FindNearestCluster(yexp,zexp,yroad,zroad);
1903 AliTRDcluster *cl = (AliTRDcluster *) GetCluster(index);
1904 tseed.SetIndexes(iTime,index);
1905 tseed.SetClusters(iTime,cl); // Register cluster
1906 tseed.SetX(iTime,dxlayer); // Register cluster
1907 tseed.SetY(iTime,cl->GetY()); // Register cluster
1908 tseed.SetZ(iTime,cl->GetZ()); // Register cluster
1913 Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1);
1914 Float_t tquality = (18.0 - tseed.GetN2())/2.0 + TMath::Abs(dangle) / 0.1
1915 + TMath::Abs(tseed.GetYfit(0) - tseed.GetYref(0)) / 0.2
1916 + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer];
1917 if (tquality < quality) {
1918 cseed[jLayer] = tseed;
1927 if ( cseed[jLayer].IsOK()) {
1928 cseed[jLayer].CookLabels();
1929 cseed[jLayer].UpdateUsed();
1930 nusedf += cseed[jLayer].GetNUsed();
1931 AliTRDseed::FitRiemanTilt(cseed,kTRUE);
1937 AliTRDseed bseed[6];
1938 for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
1939 bseed[jLayer] = cseed[jLayer];
1941 Float_t lastquality = 10000.0;
1942 Float_t lastchi2 = 10000.0;
1943 Float_t chi2 = 1000.0;
1945 for (Int_t iter = 0; iter < 4; iter++) {
1947 // Sort tracklets according "quality", try to "improve" 4 worst
1948 Float_t sumquality = 0.0;
1949 Float_t squality[6];
1950 Int_t sortindexes[6];
1952 for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
1953 if (bseed[jLayer].IsOK()) {
1954 AliTRDseed &tseed = bseed[jLayer];
1955 Double_t zcor = tseed.GetTilt() * (tseed.GetZProb() - tseed.GetZref(0));
1956 Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1);
1957 Float_t tquality = (18.0 - tseed.GetN2()) / 2.0 + TMath::Abs(dangle) / 0.1
1958 + TMath::Abs(tseed.GetYfit(0) - (tseed.GetYref(0) - zcor)) / 0.2
1959 + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer];
1960 squality[jLayer] = tquality;
1963 squality[jLayer] = -1.0;
1965 sumquality +=squality[jLayer];
1968 if ((sumquality >= lastquality) ||
1969 (chi2 > lastchi2)) {
1972 lastquality = sumquality;
1975 for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
1976 cseed[jLayer] = bseed[jLayer];
1979 TMath::Sort(6,squality,sortindexes,kFALSE);
1981 for (Int_t jLayer = 5; jLayer > 1; jLayer--) {
1983 Int_t bLayer = sortindexes[jLayer];
1984 AliTRDseed tseed = bseed[bLayer];
1986 for (Int_t iTime = 2; iTime < 20; iTime++) {
1988 AliTRDpropagationLayer &layer = *(fTrSec[ns]->GetLayer(layers[bLayer][1]-iTime));
1989 Double_t dxlayer = layer.GetX() - xcl[bLayer];
1990 Double_t zexp = tseed.GetZref(0);
1991 Double_t zcor = tseed.GetTilt() * (tseed.GetZProb() - tseed.GetZref(0));
1992 Float_t roadz = padlength[bLayer] + 1;
1993 if (TMath::Abs(tseed.GetZProb() - zexp) > 0.5*padlength[bLayer]) {
1994 roadz = padlength[bLayer] * 0.5;
1996 if (tseed.GetZfit(1)*tseed.GetZref(1) < 0.0) {
1997 roadz = padlength[bLayer] * 0.5;
1999 if (TMath::Abs(tseed.GetZProb() - zexp) < 0.1*padlength[bLayer]) {
2000 zexp = tseed.GetZProb();
2001 roadz = padlength[bLayer] * 0.5;
2004 Double_t yexp = tseed.GetYref(0) + tseed.GetYref(1) * dxlayer - zcor;
2005 Int_t index = layer.FindNearestCluster(yexp,zexp,kRoad1y,roadz);
2009 AliTRDcluster *cl = (AliTRDcluster *) GetCluster(index);
2011 tseed.SetIndexes(iTime,index);
2012 tseed.SetClusters(iTime,cl); // Register cluster
2013 tseed.SetX(iTime,dxlayer); // Register cluster
2014 tseed.SetY(iTime,cl->GetY()); // Register cluster
2015 tseed.SetZ(iTime,cl->GetZ()); // Register cluster
2021 Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1);
2022 Double_t zcor = tseed.GetTilt() * (tseed.GetZProb() - tseed.GetZref(0));
2023 Float_t tquality = (18.0 - tseed.GetN2()) / 2.0
2024 + TMath::Abs(dangle) / 0.1
2025 + TMath::Abs(tseed.GetYfit(0) - (tseed.GetYref(0) - zcor)) / 0.2
2026 + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer];
2027 if (tquality<squality[bLayer]) {
2028 bseed[bLayer] = tseed;
2034 chi2 = AliTRDseed::FitRiemanTilt(bseed,kTRUE);
2041 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2042 if (TMath::Abs(cseed[iLayer].GetYref(0) / cseed[iLayer].GetX0()) < 0.15) {
2045 if (cseed[iLayer].IsOK()) {
2046 nclusters += cseed[iLayer].GetN2();
2054 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2055 if (cseed[iLayer].IsOK()) {
2056 rieman.AddPoint(xcl[iLayer]
2057 ,cseed[iLayer].GetYfitR(0)
2058 ,cseed[iLayer].GetZProb()
2067 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2068 if (cseed[iLayer].IsOK()) {
2069 cseed[iLayer].SetYref(0,rieman.GetYat(xcl[iLayer]));
2070 chi2RF += (cseed[iLayer].GetYref(0) - cseed[iLayer].GetYfitR(0))
2071 * (cseed[iLayer].GetYref(0) - cseed[iLayer].GetYfitR(0));
2072 cseed[iLayer].SetYref(1,rieman.GetDYat(xcl[iLayer]));
2073 cseed[iLayer].SetZref(0,rieman.GetZat(xcl[iLayer]));
2074 chi2ZF += (cseed[iLayer].GetZref(0) - cseed[iLayer].GetMeanz())
2075 * (cseed[iLayer].GetZref(0) - cseed[iLayer].GetMeanz());
2076 cseed[iLayer].SetZref(1,rieman.GetDZat(xcl[iLayer]));
2079 chi2RF /= TMath::Max((nlayers - 3.0),1.0);
2080 chi2ZF /= TMath::Max((nlayers - 3.0),1.0);
2081 curv = rieman.GetC();
2083 Double_t xref2 = (xcl[2] + xcl[3]) * 0.5; // Middle of the chamber
2084 Double_t dzmf = rieman.GetDZat(xref2);
2085 Double_t zmf = rieman.GetZat(xref2);
2091 fitterTC.ClearPoints();
2092 fitterT2.ClearPoints();
2095 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2097 if (!cseed[iLayer].IsOK()) {
2101 for (Int_t itime = 0; itime < 25; itime++) {
2103 if (!cseed[iLayer].IsUsable(itime)) {
2106 // X relative to the middle chamber
2107 Double_t x = cseed[iLayer].GetX(itime) + cseed[iLayer].GetX0() - xref2;
2108 Double_t y = cseed[iLayer].GetY(itime);
2109 Double_t z = cseed[iLayer].GetZ(itime);
2110 // ExB correction to the correction
2114 Double_t x2 = cseed[iLayer].GetX(itime) + cseed[iLayer].GetX0();
2115 Double_t t = 1.0 / (x2*x2 + y*y);
2117 uvt[0] = 2.0 * x2 * uvt[1]; // u
2118 uvt[2] = 2.0 * hL[iLayer] * uvt[1];
2119 uvt[3] = 2.0 * hL[iLayer] * x * uvt[1];
2120 uvt[4] = 2.0 * (y + hL[iLayer]*z) * uvt[1];
2121 Double_t error = 2.0 * 0.2 * uvt[1];
2122 fitterT2.AddPoint(uvt,uvt[4],error);
2125 // Constrained rieman
2127 z = cseed[iLayer].GetZ(itime);
2128 uvt[0] = 2.0 * x2 * t; // u
2129 uvt[1] = 2.0 * hL[iLayer] * x2 * uvt[1];
2130 uvt[2] = 2.0 * (y + hL[iLayer] * (z - GetZ())) * t;
2131 fitterTC.AddPoint(uvt,uvt[2],error);
2132 rieman2.AddPoint(x2,y,z,1,10);
2142 Double_t rpolz0 = fitterT2.GetParameter(3);
2143 Double_t rpolz1 = fitterT2.GetParameter(4);
2146 // Linear fitter - not possible to make boundaries
2147 // Do not accept non possible z and dzdx combinations
2149 Bool_t acceptablez = kTRUE;
2150 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2151 if (cseed[iLayer].IsOK()) {
2152 Double_t zT2 = rpolz0 + rpolz1 * (xcl[iLayer] - xref2);
2153 if (TMath::Abs(cseed[iLayer].GetZProb() - zT2) > padlength[iLayer] * 0.5 + 1.0) {
2154 acceptablez = kFALSE;
2159 fitterT2.FixParameter(3,zmf);
2160 fitterT2.FixParameter(4,dzmf);
2162 fitterT2.ReleaseParameter(3);
2163 fitterT2.ReleaseParameter(4);
2164 rpolz0 = fitterT2.GetParameter(3);
2165 rpolz1 = fitterT2.GetParameter(4);
2168 Double_t chi2TR = fitterT2.GetChisquare() / Float_t(npointsT);
2169 Double_t chi2TC = fitterTC.GetChisquare() / Float_t(npointsT);
2170 Double_t polz1c = fitterTC.GetParameter(2);
2171 Double_t polz0c = polz1c * xref2;
2172 Double_t aC = fitterTC.GetParameter(0);
2173 Double_t bC = fitterTC.GetParameter(1);
2174 Double_t cC = aC / TMath::Sqrt(bC * bC + 1.0); // Curvature
2175 Double_t aR = fitterT2.GetParameter(0);
2176 Double_t bR = fitterT2.GetParameter(1);
2177 Double_t dR = fitterT2.GetParameter(2);
2178 Double_t cR = 1.0 + bR*bR - dR*aR;
2181 dca = -dR / (TMath::Sqrt(1.0 + bR*bR - dR*aR) + TMath::Sqrt(1.0 + bR*bR));
2182 cR = aR / TMath::Sqrt(cR);
2185 Double_t chi2ZT2 = 0.0;
2186 Double_t chi2ZTC = 0.0;
2187 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2188 if (cseed[iLayer].IsOK()) {
2189 Double_t zT2 = rpolz0 + rpolz1 * (xcl[iLayer] - xref2);
2190 Double_t zTC = polz0c + polz1c * (xcl[iLayer] - xref2);
2191 chi2ZT2 += TMath::Abs(cseed[iLayer].GetMeanz() - zT2);
2192 chi2ZTC += TMath::Abs(cseed[iLayer].GetMeanz() - zTC);
2195 chi2ZT2 /= TMath::Max((nlayers - 3.0),1.0);
2196 chi2ZTC /= TMath::Max((nlayers - 3.0),1.0);
2198 AliTRDseed::FitRiemanTilt(cseed,kTRUE);
2199 Float_t sumdaf = 0.0;
2200 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2201 if (cseed[iLayer].IsOK()) {
2202 sumdaf += TMath::Abs((cseed[iLayer].GetYfit(1) - cseed[iLayer].GetYref(1))
2203 / cseed[iLayer].GetSigmaY2());
2206 sumdaf /= Float_t (nlayers - 2.0);
2209 // Likelihoods for full track
2211 Double_t likezf = TMath::Exp(-chi2ZF * 0.14);
2212 Double_t likechi2C = TMath::Exp(-chi2TC * 0.677);
2213 Double_t likechi2TR = TMath::Exp(-chi2TR * 0.78);
2214 Double_t likeaf = TMath::Exp(-sumdaf * 3.23);
2215 seedquality2[registered] = likezf * likechi2TR * likeaf;
2217 // Still needed ????
2218 // Bool_t isGold = kFALSE;
2220 // if (nlayers == 6 && TMath::Log(0.000000001+seedquality2[index])<-5.) isGold =kTRUE; // gold
2221 // if (nlayers == findable && TMath::Log(0.000000001+seedquality2[index])<-4.) isGold =kTRUE; // gold
2222 // if (isGold &&nusedf<10){
2223 // for (Int_t jLayer=0;jLayer<6;jLayer++){
2224 // if ( seed[index][jLayer].IsOK()&&TMath::Abs(seed[index][jLayer].fYfit[1]-seed[index][jLayer].fYfit[1])<0.1)
2225 // seed[index][jLayer].UseClusters(); //sign gold
2230 if (!cseed[0].IsOK()) {
2232 if (!cseed[1].IsOK()) {
2236 seedparams[registered][0] = cseed[index0].GetX0();
2237 seedparams[registered][1] = cseed[index0].GetYref(0);
2238 seedparams[registered][2] = cseed[index0].GetZref(0);
2239 seedparams[registered][5] = cR;
2240 seedparams[registered][3] = cseed[index0].GetX0() * cR - TMath::Sin(TMath::ATan(cseed[0].GetYref(1)));
2241 seedparams[registered][4] = cseed[index0].GetZref(1)
2242 / TMath::Sqrt(1.0 + cseed[index0].GetYref(1) * cseed[index0].GetYref(1));
2243 seedparams[registered][6] = ns;
2248 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2249 if (!cseed[iLayer].IsOK()) {
2252 if (cseed[iLayer].GetLabels(0) >= 0) {
2253 labels[nlab] = cseed[iLayer].GetLabels(0);
2256 if (cseed[iLayer].GetLabels(1) >= 0) {
2257 labels[nlab] = cseed[iLayer].GetLabels(1);
2261 Freq(nlab,labels,outlab,kFALSE);
2262 Int_t label = outlab[0];
2263 Int_t frequency = outlab[1];
2264 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2265 cseed[iLayer].SetFreq(frequency);
2266 cseed[iLayer].SetC(cR);
2267 cseed[iLayer].SetCC(cC);
2268 cseed[iLayer].SetChi2(chi2TR);
2269 cseed[iLayer].SetChi2Z(chi2ZF);
2273 if (1 || (!isFake)) {
2274 Float_t zvertex = GetZ();
2275 TTreeSRedirector &cstream = *fDebugStreamer;
2276 if (AliTRDReconstructor::StreamLevel() > 0) {
2278 << "isFake=" << isFake
2279 << "Vertex=" << zvertex
2280 << "Rieman2.=" << &rieman2
2281 << "Rieman.=" << &rieman
2289 << "Chi2R=" << chi2R
2290 << "Chi2Z=" << chi2Z
2291 << "Chi2RF=" << chi2RF // Chi2 of trackletes on full track
2292 << "Chi2ZF=" << chi2ZF // Chi2 z on tracklets on full track
2293 << "Chi2ZT2=" << chi2ZT2 // Chi2 z on tracklets on full track - rieman tilt
2294 << "Chi2ZTC=" << chi2ZTC // Chi2 z on tracklets on full track - rieman tilt const
2295 << "Chi2TR=" << chi2TR // Chi2 without vertex constrain
2296 << "Chi2TC=" << chi2TC // Chi2 with vertex constrain
2297 << "C=" << curv // Non constrained - no tilt correction
2298 << "DR=" << dR // DR parameter - tilt correction
2299 << "DCA=" << dca // DCA - tilt correction
2300 << "CR=" << cR // Non constrained curvature - tilt correction
2301 << "CC=" << cC // Constrained curvature
2302 << "Polz0=" << polz0c
2303 << "Polz1=" << polz1c
2304 << "RPolz0=" << rpolz0
2305 << "RPolz1=" << rpolz1
2306 << "Ncl=" << nclusters
2307 << "Nlayers=" << nlayers
2308 << "NUsedS=" << nusedCl
2309 << "NUsed=" << nusedf
2310 << "Findable=" << findable
2312 << "LikePrim=" << likePrim
2313 << "Likechi2C=" << likechi2C
2314 << "Likechi2TR=" << likechi2TR
2315 << "Likezf=" << likezf
2316 << "LikeF=" << seedquality2[registered]
2317 << "S0.=" << &cseed[0]
2318 << "S1.=" << &cseed[1]
2319 << "S2.=" << &cseed[2]
2320 << "S3.=" << &cseed[3]
2321 << "S4.=" << &cseed[4]
2322 << "S5.=" << &cseed[5]
2323 << "SB0.=" << &seedb[0]
2324 << "SB1.=" << &seedb[1]
2325 << "SB2.=" << &seedb[2]
2326 << "SB3.=" << &seedb[3]
2327 << "SB4.=" << &seedb[4]
2328 << "SB5.=" << &seedb[5]
2329 << "Label=" << label
2330 << "Freq=" << frequency
2331 << "sLayer=" << sLayer
2336 if (registered<kMaxSeed - 1) {
2338 cseed = seed[registered];
2341 } // End of loop over layer 1
2343 } // End of loop over layer 0
2345 } // End of loop over layer 3
2347 } // End of loop over seeding time bins
2353 TMath::Sort(registered,seedquality2,sort,kTRUE);
2354 Bool_t signedseed[kMaxSeed];
2355 for (Int_t i = 0; i < registered; i++) {
2356 signedseed[i] = kFALSE;
2359 for (Int_t iter = 0; iter < 5; iter++) {
2361 for (Int_t iseed = 0; iseed < registered; iseed++) {
2363 Int_t index = sort[iseed];
2364 if (signedseed[index]) {
2367 Int_t labelsall[1000];
2368 Int_t nlabelsall = 0;
2369 Int_t naccepted = 0;;
2370 Int_t sLayer = seedlayer[index];
2376 for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
2378 if (TMath::Abs(seed[index][jLayer].GetYref(0) / xcl[jLayer]) < 0.15) {
2381 if (seed[index][jLayer].IsOK()) {
2382 seed[index][jLayer].UpdateUsed();
2383 ncl +=seed[index][jLayer].GetN2();
2384 nused +=seed[index][jLayer].GetNUsed();
2387 for (Int_t itime = 0; itime < 25; itime++) {
2388 if (seed[index][jLayer].IsUsable(itime)) {
2390 for (Int_t ilab = 0; ilab < 3; ilab++) {
2391 Int_t tindex = seed[index][jLayer].GetClusters(itime)->GetLabel(ilab);
2393 labelsall[nlabelsall] = tindex;
2411 if (TMath::Log(0.000000001+seedquality2[index]) < -5.0) {
2417 if (nlayers < findable) {
2420 if (TMath::Log(0.000000001+seedquality2[index]) < -4.0) {
2426 if ((nlayers == findable) ||
2430 if (TMath::Log(0.000000001+seedquality2[index]) < -6.0) {
2436 if (TMath::Log(0.000000001+seedquality2[index]) < -5.0) {
2442 if (TMath::Log(0.000000001+seedquality2[index]) - nused/(nlayers-3.0) < -15.0) {
2447 signedseed[index] = kTRUE;
2452 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2453 if (seed[index][iLayer].IsOK()) {
2454 if (seed[index][iLayer].GetLabels(0) >= 0) {
2455 labels[nlab] = seed[index][iLayer].GetLabels(0);
2458 if (seed[index][iLayer].GetLabels(1) >= 0) {
2459 labels[nlab] = seed[index][iLayer].GetLabels(1);
2464 Freq(nlab,labels,outlab,kFALSE);
2465 Int_t label = outlab[0];
2466 Int_t frequency = outlab[1];
2467 Freq(nlabelsall,labelsall,outlab,kFALSE);
2468 Int_t label1 = outlab[0];
2469 Int_t label2 = outlab[2];
2470 Float_t fakeratio = (naccepted - outlab[1]) / Float_t(naccepted);
2471 Float_t ratio = Float_t(nused) / Float_t(ncl);
2473 for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
2474 if ((seed[index][jLayer].IsOK()) &&
2475 (TMath::Abs(seed[index][jLayer].GetYfit(1) - seed[index][jLayer].GetYfit(1)) < 0.2)) {
2476 seed[index][jLayer].UseClusters(); // Sign gold
2481 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.
2482 TTreeSRedirector &cstream = *fDebugStreamer;
2487 AliTRDtrack *track = RegisterSeed(seed[index],seedparams[index]);
2493 AliESDtrack esdtrack;
2494 esdtrack.UpdateTrackParams(track,AliESDtrack::kTRDout);
2495 esdtrack.SetLabel(label);
2496 esd->AddTrack(&esdtrack);
2497 TTreeSRedirector &cstream = *fDebugStreamer;
2498 if (AliTRDReconstructor::StreamLevel() > 0) {
2500 << "EventNrInFile=" << eventNrInFile
2501 << "ESD.=" << &esdtrack
2503 << "trdback.=" << track
2508 if (AliTRDReconstructor::StreamLevel() > 0) {
2511 << "Track.=" << track
2512 << "Like=" << seedquality[index]
2513 << "LikeF=" << seedquality2[index]
2514 << "S0.=" << &seed[index][0]
2515 << "S1.=" << &seed[index][1]
2516 << "S2.=" << &seed[index][2]
2517 << "S3.=" << &seed[index][3]
2518 << "S4.=" << &seed[index][4]
2519 << "S5.=" << &seed[index][5]
2520 << "Label=" << label
2521 << "Label1=" << label1
2522 << "Label2=" << label2
2523 << "FakeRatio=" << fakeratio
2524 << "Freq=" << frequency
2526 << "Nlayers=" << nlayers
2527 << "Findable=" << findable
2528 << "NUsed=" << nused
2529 << "sLayer=" << sLayer
2530 << "EventNrInFile=" << eventNrInFile
2538 } // End of loop over sectors
2544 //_____________________________________________________________________________
2545 Int_t AliTRDtracker::ReadClusters(TObjArray *array, TTree *clusterTree) const
2548 // Reads AliTRDclusters (option >= 0) or AliTRDrecPoints (option < 0)
2549 // from the file. The names of the cluster tree and branches
2550 // should match the ones used in AliTRDclusterizer::WriteClusters()
2553 Int_t nsize = Int_t(clusterTree->GetTotBytes() / (sizeof(AliTRDcluster)));
2554 TObjArray *clusterArray = new TObjArray(nsize+1000);
2556 TBranch *branch = clusterTree->GetBranch("TRDcluster");
2558 AliError("Can't get the branch !");
2561 branch->SetAddress(&clusterArray);
2563 // Loop through all entries in the tree
2564 Int_t nEntries = (Int_t) clusterTree->GetEntries();
2566 AliTRDcluster *c = 0;
2567 for (Int_t iEntry = 0; iEntry < nEntries; iEntry++) {
2570 nbytes += clusterTree->GetEvent(iEntry);
2572 // Get the number of points in the detector
2573 Int_t nCluster = clusterArray->GetEntriesFast();
2575 // Loop through all TRD digits
2576 for (Int_t iCluster = 0; iCluster < nCluster; iCluster++) {
2577 c = (AliTRDcluster *) clusterArray->UncheckedAt(iCluster);
2578 AliTRDcluster *co = c;
2580 clusterArray->RemoveAt(iCluster);
2585 delete clusterArray;
2591 //_____________________________________________________________________________
2592 Bool_t AliTRDtracker::GetTrackPoint(Int_t index, AliTrackPoint &p) const
2595 // Get track space point with index i
2596 // Origin: C.Cheshkov
2599 AliTRDcluster *cl = (AliTRDcluster *) fClusters->UncheckedAt(index);
2600 Int_t idet = cl->GetDetector();
2601 Int_t isector = fGeom->GetSector(idet);
2602 Int_t ichamber = fGeom->GetChamber(idet);
2603 Int_t iplan = fGeom->GetPlane(idet);
2605 local[0] = GetX(isector,iplan,cl->GetLocalTimeBin());
2606 local[1] = cl->GetY();
2607 local[2] = cl->GetZ();
2609 fGeom->RotateBack(idet,local,global);
2610 p.SetXYZ(global[0],global[1],global[2]);
2611 AliGeomManager::ELayerID iLayer = AliGeomManager::kTRD1;
2614 iLayer = AliGeomManager::kTRD1;
2617 iLayer = AliGeomManager::kTRD2;
2620 iLayer = AliGeomManager::kTRD3;
2623 iLayer = AliGeomManager::kTRD4;
2626 iLayer = AliGeomManager::kTRD5;
2629 iLayer = AliGeomManager::kTRD6;
2632 Int_t modId = isector * fGeom->Ncham() + ichamber;
2633 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,modId);
2634 p.SetVolumeID(volid);
2640 //_____________________________________________________________________________
2641 void AliTRDtracker::CookLabel(AliKalmanTrack *pt, Float_t wrong) const
2644 // This cooks a label. Mmmmh, smells good...
2647 Int_t label = 123456789;
2651 Int_t ncl = pt->GetNumberOfClusters();
2653 const Int_t kRange = fTrSec[0]->GetOuterTimeBin() + 1;
2657 Int_t **s = new Int_t* [kRange];
2658 for (i = 0; i < kRange; i++) {
2659 s[i] = new Int_t[2];
2661 for (i = 0; i < kRange; i++) {
2670 for (i = 0; i < ncl; i++) {
2671 index = pt->GetClusterIndex(i);
2672 AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index);
2678 for (i = 0; i < ncl; i++) {
2679 index = pt->GetClusterIndex(i);
2680 AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index);
2681 for (Int_t k = 0; k < 3; k++) {
2682 label = c->GetLabel(k);
2683 labelAdded = kFALSE;
2686 while ((!labelAdded) && (j < kRange)) {
2687 if ((s[j][0] == label) ||
2690 s[j][1] = s[j][1] + 1;
2702 for (i = 0; i < kRange; i++) {
2703 if (s[i][1] > max) {
2709 for (i = 0; i < kRange; i++) {
2715 if ((1.0 - Float_t(max)/ncl) > wrong) {
2719 pt->SetLabel(label);
2723 //_____________________________________________________________________________
2724 void AliTRDtracker::UseClusters(const AliKalmanTrack *t, Int_t from) const
2727 // Use clusters, but don't abuse them!
2730 const Float_t kmaxchi2 = 18;
2731 const Float_t kmincl = 10;
2733 AliTRDtrack *track = (AliTRDtrack *) t;
2735 Int_t ncl = t->GetNumberOfClusters();
2736 for (Int_t i = from; i < ncl; i++) {
2737 Int_t index = t->GetClusterIndex(i);
2738 AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index);
2739 Int_t iplane = fGeom->GetPlane(c->GetDetector());
2740 if (track->GetTracklets(iplane).GetChi2() > kmaxchi2) {
2743 if (track->GetTracklets(iplane).GetN() < kmincl) {
2746 if (!(c->IsUsed())) {
2753 //_____________________________________________________________________________
2754 Double_t AliTRDtracker::ExpectedSigmaY2(Double_t , Double_t , Double_t ) const
2757 // Parametrised "expected" error of the cluster reconstruction in Y
2760 Double_t s = 0.08 * 0.08;
2765 //_____________________________________________________________________________
2766 Double_t AliTRDtracker::ExpectedSigmaZ2(Double_t , Double_t ) const
2769 // Parametrised "expected" error of the cluster reconstruction in Z
2772 Double_t s = 9.0 * 9.0 / 12.0;
2777 //_____________________________________________________________________________
2778 Double_t AliTRDtracker::GetX(Int_t sector, Int_t plane, Int_t localTB) const
2781 // Returns radial position which corresponds to time bin <localTB>
2782 // in tracking sector <sector> and plane <plane>
2785 Int_t index = fTrSec[sector]->CookTimeBinIndex(plane, localTB);
2786 Int_t pl = fTrSec[sector]->GetLayerNumber(index);
2788 return fTrSec[sector]->GetLayer(pl)->GetX();
2792 //_____________________________________________________________________________
2793 AliTRDtracker::AliTRDpropagationLayer
2794 ::AliTRDpropagationLayer(Double_t x, Double_t dx, Double_t rho
2795 , Double_t radLength, Int_t tbIndex, Int_t plane)
2804 ,fTimeBinIndex(tbIndex)
2817 // AliTRDpropagationLayer constructor
2820 for (Int_t i = 0; i < (Int_t) kZones; i++) {
2825 if (fTimeBinIndex >= 0) {
2826 fClusters = new AliTRDcluster*[kMaxClusterPerTimeBin];
2827 fIndex = new UInt_t[kMaxClusterPerTimeBin];
2830 for (Int_t i = 0; i < 5; i++) {
2831 fIsHole[i] = kFALSE;
2836 //_____________________________________________________________________________
2837 void AliTRDtracker::AliTRDpropagationLayer
2838 ::SetHole(Double_t Zmax, Double_t Ymax, Double_t rho
2839 , Double_t radLength, Double_t Yc, Double_t Zc)
2842 // Sets hole in the layer
2851 fHoleX0 = radLength;
2855 //_____________________________________________________________________________
2856 AliTRDtracker::AliTRDtrackingSector
2857 ::AliTRDtrackingSector(AliTRDgeometry *geo, Int_t gs)
2863 // AliTRDtrackingSector Constructor
2866 AliTRDpadPlane *padPlane = 0;
2867 AliTRDpropagationLayer *ppl = 0;
2869 // Get holes description from geometry
2870 Bool_t holes[AliTRDgeometry::kNcham];
2871 for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) {
2872 holes[icham] = fGeom->IsHole(0,icham,gs);
2875 for (UInt_t i = 0; i < kMaxTimeBinIndex; i++) {
2876 fTimeBinIndex[i] = -1;
2884 // Add layers for each of the planes
2885 Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region
2886 //Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region
2888 const Int_t kNchambers = AliTRDgeometry::Ncham();
2891 Double_t ymaxsensitive = 0;
2892 Double_t *zc = new Double_t[kNchambers];
2893 Double_t *zmax = new Double_t[kNchambers];
2894 Double_t *zmaxsensitive = new Double_t[kNchambers];
2896 for (Int_t plane = 0; plane < AliTRDgeometry::Nplan(); plane++) {
2898 ymax = fGeom->GetChamberWidth(plane) / 2.0;
2899 padPlane = fGeom->GetPadPlane(plane,0);
2900 ymaxsensitive = (padPlane->GetColSize(1) * padPlane->GetNcols() - 4.0) / 2.0;
2902 for (Int_t ch = 0; ch < kNchambers; ch++) {
2903 zmax[ch] = fGeom->GetChamberLength(plane,ch) / 2.0;
2904 Float_t pad = padPlane->GetRowSize(1);
2905 Float_t row0 = fGeom->GetRow0(plane,ch,0);
2906 Int_t nPads = fGeom->GetRowMax(plane,ch,0);
2907 zmaxsensitive[ch] = Float_t(nPads) * pad / 2.0;
2908 zc[ch] = -(pad * nPads) / 2.0 + row0;
2911 dx = AliTRDcalibDB::Instance()->GetVdrift(0,0,0)
2912 / AliTRDCommonParam::Instance()->GetSamplingFrequency();
2913 rho = 0.00295 * 0.85; //????
2916 Double_t x0 = (Double_t) AliTRDgeometry::GetTime0(plane);
2917 //Double_t xbottom = x0 - dxDrift;
2918 //Double_t xtop = x0 + dxAmp;
2920 Int_t nTimeBins = AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
2921 for (Int_t iTime = 0; iTime < nTimeBins; iTime++) {
2923 Double_t xlayer = iTime * dx - dxAmp;
2924 //if (xlayer<0) xlayer = dxAmp / 2.0;
2927 tbIndex = CookTimeBinIndex(plane,iTime);
2928 ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex,plane);
2929 ppl->SetYmax(ymax,ymaxsensitive);
2930 ppl->SetZ(zc,zmax,zmaxsensitive);
2931 ppl->SetHoles(holes);
2942 delete [] zmaxsensitive;
2946 //_____________________________________________________________________________
2947 AliTRDtracker::AliTRDtrackingSector
2948 ::AliTRDtrackingSector(const AliTRDtrackingSector &/*t*/)
2959 //_____________________________________________________________________________
2960 Int_t AliTRDtracker::AliTRDtrackingSector
2961 ::CookTimeBinIndex(Int_t plane, Int_t localTB) const
2964 // depending on the digitization parameters calculates "global"
2965 // time bin index for timebin <localTB> in plane <plane>
2969 Int_t tbPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
2970 Int_t gtb = (plane+1) * tbPerPlane - localTB - 1;
2982 //_____________________________________________________________________________
2983 void AliTRDtracker::AliTRDtrackingSector
2984 ::MapTimeBinLayers()
2987 // For all sensitive time bins sets corresponding layer index
2988 // in the array fTimeBins
2993 for (Int_t i = 0; i < fN; i++) {
2995 index = fLayers[i]->GetTimeBinIndex();
3000 if (index >= (Int_t) kMaxTimeBinIndex) {
3001 //AliWarning(Form("Index %d exceeds allowed maximum of %d!\n"
3002 // ,index,kMaxTimeBinIndex-1));
3006 fTimeBinIndex[index] = i;
3012 //_____________________________________________________________________________
3013 Int_t AliTRDtracker::AliTRDtrackingSector
3014 ::GetLayerNumber(Double_t x) const
3017 // Returns the number of time bin which in radial position is closest to <x>
3020 if (x >= fLayers[fN-1]->GetX()) {
3023 if (x <= fLayers[ 0]->GetX()) {
3029 Int_t m = (b + e) / 2;
3031 for ( ; b < e; m = (b + e) / 2) {
3032 if (x > fLayers[m]->GetX()) {
3040 if (TMath::Abs(x - fLayers[m]->GetX()) > TMath::Abs(x - fLayers[m+1]->GetX())) {
3049 //_____________________________________________________________________________
3050 Int_t AliTRDtracker::AliTRDtrackingSector
3051 ::GetInnerTimeBin() const
3054 // Returns number of the innermost SENSITIVE propagation layer
3057 return GetLayerNumber(0);
3061 //_____________________________________________________________________________
3062 Int_t AliTRDtracker::AliTRDtrackingSector
3063 ::GetOuterTimeBin() const
3066 // Returns number of the outermost SENSITIVE time bin
3069 return GetLayerNumber(GetNumberOfTimeBins() - 1);
3073 //_____________________________________________________________________________
3074 Int_t AliTRDtracker::AliTRDtrackingSector
3075 ::GetNumberOfTimeBins() const
3078 // Returns number of SENSITIVE time bins
3084 for (tb = kMaxTimeBinIndex - 1; tb >= 0; tb--) {
3085 layer = GetLayerNumber(tb);
3095 //_____________________________________________________________________________
3096 void AliTRDtracker::AliTRDtrackingSector
3097 ::InsertLayer(AliTRDpropagationLayer *pl)
3100 // Insert layer <pl> in fLayers array.
3101 // Layers are sorted according to X coordinate.
3104 if (fN == ((Int_t) kMaxLayersPerSector)) {
3105 //AliWarning("Too many layers !\n");
3114 Int_t i = Find(pl->GetX());
3116 memmove(fLayers+i+1,fLayers+i,(fN-i)*sizeof(AliTRDpropagationLayer*));
3123 //_____________________________________________________________________________
3124 Int_t AliTRDtracker::AliTRDtrackingSector
3125 ::Find(Double_t x) const
3128 // Returns index of the propagation layer nearest to X
3131 if (x <= fLayers[0]->GetX()) {
3135 if (x > fLayers[fN-1]->GetX()) {
3141 Int_t m = (b + e) / 2;
3143 for (; b < e; m = (b + e) / 2) {
3144 if (x > fLayers[m]->GetX()) {
3156 //_____________________________________________________________________________
3157 void AliTRDtracker::AliTRDpropagationLayer
3158 ::SetZ(Double_t *center, Double_t *w, Double_t *wsensitive )
3161 // set centers and the width of sectors
3164 for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) {
3165 fZc[icham] = center[icham];
3166 fZmax[icham] = w[icham];
3167 fZmaxSensitive[icham] = wsensitive[icham];
3172 //_____________________________________________________________________________
3173 void AliTRDtracker::AliTRDpropagationLayer::SetHoles(Bool_t *holes)
3176 // set centers and the width of sectors
3181 for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) {
3182 fIsHole[icham] = holes[icham];
3190 //_____________________________________________________________________________
3191 void AliTRDtracker::AliTRDpropagationLayer
3192 ::InsertCluster(AliTRDcluster *c, UInt_t index)
3195 // Insert cluster in cluster array.
3196 // Clusters are sorted according to Y coordinate.
3199 if (fTimeBinIndex < 0) {
3200 //AliWarning("Attempt to insert cluster into non-sensitive time bin!\n");
3204 if (fN == (Int_t) kMaxClusterPerTimeBin) {
3205 //AliWarning("Too many clusters !\n");
3211 fClusters[fN++] = c;
3215 Int_t i = Find(c->GetY());
3216 memmove(fClusters+i+1,fClusters+i,(fN-i)*sizeof(AliTRDcluster*));
3217 memmove(fIndex +i+1,fIndex +i,(fN-i)*sizeof(UInt_t));
3224 //_____________________________________________________________________________
3225 Int_t AliTRDtracker::AliTRDpropagationLayer::Find(Float_t y) const
3228 // Returns index of the cluster nearest in Y
3234 if (y <= fClusters[0]->GetY()) {
3237 if (y > fClusters[fN-1]->GetY()) {
3243 Int_t m = (b + e) / 2;
3245 for ( ; b < e; m = (b + e) / 2) {
3246 if (y > fClusters[m]->GetY()) {
3258 //_____________________________________________________________________________
3259 Int_t AliTRDtracker::AliTRDpropagationLayer
3260 ::FindNearestCluster(Float_t y, Float_t z, Float_t maxroad
3261 , Float_t maxroadz) const
3264 // Returns index of the cluster nearest to the given y,z
3269 Float_t mindist = maxroad;
3271 for (Int_t i = Find(y-maxroad); i < maxn; i++) {
3272 AliTRDcluster *c = (AliTRDcluster *) (fClusters[i]);
3273 Float_t ycl = c->GetY();
3274 if (ycl > (y + maxroad)) {
3277 if (TMath::Abs(c->GetZ() - z) > maxroadz) {
3280 if (TMath::Abs(ycl - y) < mindist) {
3281 mindist = TMath::Abs(ycl - y);
3290 //_____________________________________________________________________________
3291 Double_t AliTRDtracker::GetTiltFactor(const AliTRDcluster *c)
3294 // Returns correction factor for tilted pads geometry
3297 Int_t det = c->GetDetector();
3298 Int_t plane = fGeom->GetPlane(det);
3299 AliTRDpadPlane *padPlane = fGeom->GetPadPlane(plane,0);
3300 Double_t h01 = TMath::Tan(-TMath::Pi() / 180.0 * padPlane->GetTiltingAngle());
3311 //_____________________________________________________________________________
3312 Int_t AliTRDtracker::FindClusters(Int_t sector, Int_t t0, Int_t t1
3313 , AliTRDtrack *track
3314 , Int_t *clusters, AliTRDtracklet &tracklet)
3318 // Try to find nearest clusters to the track in timebins from t0 to t1
3320 // Correction coeficients - depend on TRD parameters - to be changed accordingly
3326 Double_t xmean = 0.0; // Reference x
3327 Double_t dz[10][100];
3328 Double_t dy[10][100];
3332 Int_t indexes[10][100]; // Indexes of the clusters in the road
3333 Int_t best[10][100]; // Index of best matching cluster
3334 AliTRDcluster *cl[10][100]; // Pointers to the clusters in the road
3336 for (Int_t it = 0; it < 100; it++) {
3343 for (Int_t ih = 0; ih < 10;ih++) {
3344 indexes[ih][it] = -2; // Reset indexes1
3346 dz[ih][it] = -100.0;
3347 dy[ih][it] = -100.0;
3352 Double_t x0 = track->GetX();
3353 Double_t sigmaz = TMath::Sqrt(TMath::Abs(track->GetSigmaZ2()));
3358 Int_t detector = -1;
3359 Float_t padlength = 0.0;
3360 AliTRDtrack track2(* track);
3361 Float_t snpy = track->GetSnp();
3362 Float_t tany = TMath::Sqrt(snpy*snpy / (1.0 - snpy*snpy));
3367 Double_t sy2 = ExpectedSigmaY2(x0,track->GetTgl(),track->GetSignedPt());
3368 Double_t sz2 = ExpectedSigmaZ2(x0,track->GetTgl());
3369 Double_t road = 15.0 * TMath::Sqrt(track->GetSigmaY2() + sy2);
3375 for (Int_t it = 0; it < t1-t0; it++) {
3377 Double_t maxChi2[2] = { fgkMaxChi2, fgkMaxChi2 };
3378 AliTRDpropagationLayer &timeBin = *(fTrSec[sector]->GetLayer(it+t0));
3380 continue; // No indexes1
3383 Int_t maxn = timeBin;
3384 x[it] = timeBin.GetX();
3385 track2.PropagateTo(x[it]);
3386 yt[it] = track2.GetY();
3387 zt[it] = track2.GetZ();
3389 Double_t y = yt[it];
3390 Double_t z = zt[it];
3391 Double_t chi2 = 1000000.0;
3395 // Find 2 nearest cluster at given time bin
3397 int checkPoint[4] = {0,0,0,0};
3398 double minY = 123456789;
3399 double minD[2] = {1,1};
3401 for (Int_t i = timeBin.Find(y - road); i < maxn; i++) {
3402 //for (Int_t i = 0; i < maxn; i++) {
3404 AliTRDcluster *c = (AliTRDcluster *) (timeBin[i]);
3405 h01 = GetTiltFactor(c);
3407 Int_t det = c->GetDetector();
3408 plane = fGeom->GetPlane(det);
3409 padlength = TMath::Sqrt(c->GetSigmaZ2() * 12.0);
3412 //if (c->GetLocalTimeBin()==0) continue;
3413 if (c->GetY() > (y + road)) {
3417 fHDeltaX->Fill(c->GetX() - x[it]);
3418 //printf("%f\t%f\t%f \n", c->GetX(), x[it], c->GetX()-x[it]);
3420 if (TMath::Abs(c->GetY()-y) < TMath::Abs(minY)) {
3422 minD[0] = c->GetY()-y;
3423 minD[1] = c->GetZ()-z;
3428 fHMinZ->Fill(c->GetZ() - z);
3429 if ((c->GetZ() - z) * (c->GetZ() - z) > 2 * (12.0 * sz2)) {
3434 Double_t dist = TMath::Abs(c->GetZ() - z);
3435 if (dist > (0.5 * padlength + 6.0 * sigmaz)) { // 0.5
3436 continue; // 6 sigma boundary cut
3440 Double_t cost = 0.0;
3441 // Sigma boundary cost function
3442 if (dist> (0.5 * padlength - sigmaz)){
3443 cost = (dist - 0.5*padlength) / (2.0 * sigmaz);
3445 cost = (cost + 1.0) * (cost + 1.0);
3451 //Int_t label = TMath::Abs(track->GetLabel());
3452 //if (c->GetLabel(0)!=label && c->GetLabel(1)!=label&&c->GetLabel(2)!=label) continue;
3453 chi2 = track2.GetPredictedChi2(c,h01) + cost;
3456 if (chi2 > maxChi2[1]) {
3461 detector = c->GetDetector();
3462 // Store the clusters in the road
3463 for (Int_t ih = 2; ih < 9; ih++) {
3464 if (cl[ih][it] == 0) {
3466 indexes[ih][it] = timeBin.GetIndex(i); // Index - 9 - reserved for outliers
3471 if (chi2 < maxChi2[0]) {
3472 maxChi2[1] = maxChi2[0];
3474 indexes[1][it] = indexes[0][it];
3475 cl[1][it] = cl[0][it];
3476 indexes[0][it] = timeBin.GetIndex(i);
3482 indexes[1][it] = timeBin.GetIndex(i);
3486 for(int iCheckPoint = 0; iCheckPoint<4; iCheckPoint++)
3487 fHFindCl[iCheckPoint]->Fill(checkPoint[iCheckPoint]);
3489 if (checkPoint[3]) {
3490 if (track->GetSignedPt() > 0) fHMinYPos->Fill(minY);
3491 else fHMinYNeg->Fill(minY);
3493 fHMinD->Fill(minD[0], minD[1]);
3506 xmean /= Float_t(nfound); // Middle x
3507 track2.PropagateTo(xmean); // Propagate track to the center
3510 // Choose one of the variants
3515 Double_t sumdy = 0.0;
3516 Double_t sumdy2 = 0.0;
3517 Double_t sumx = 0.0;
3518 Double_t sumxy = 0.0;
3519 Double_t sumx2 = 0.0;
3520 Double_t mpads = 0.0;
3526 Double_t moffset[10]; // Mean offset
3527 Double_t mean[10]; // Mean value
3528 Double_t angle[10]; // Angle
3530 Double_t smoffset[10]; // Sigma of mean offset
3531 Double_t smean[10]; // Sigma of mean value
3532 Double_t sangle[10]; // Sigma of angle
3533 Double_t smeanangle[10]; // Correlation
3535 Double_t sigmas[10];
3536 Double_t tchi2s[10]; // Chi2s for tracklet
3538 for (Int_t it = 0; it < 10; it++) {
3544 moffset[it] = 0.0; // Mean offset
3545 mean[it] = 0.0; // Mean value
3546 angle[it] = 0.0; // Angle
3548 smoffset[it] = 1.0e5; // Sigma of mean offset
3549 smean[it] = 1.0e5; // Sigma of mean value
3550 sangle[it] = 1.0e5; // Sigma of angle
3551 smeanangle[it] = 0.0; // Correlation
3554 tchi2s[it] = 1.0e5; // Chi2s for tracklet
3561 for (Int_t it = 0; it < t1 - t0; it++) {
3565 for (Int_t dt = -3; dt <= 3; dt++) {
3569 if (it+dt > t1-t0) {
3572 if (!cl[0][it+dt]) {
3575 zmean[it] += cl[0][it+dt]->GetZ();
3578 zmean[it] /= nmean[it];
3581 for (Int_t it = 0; it < t1 - t0; it++) {
3585 for (Int_t ih = 0; ih < 10; ih++) {
3586 dz[ih][it] = -100.0;
3587 dy[ih][it] = -100.0;
3591 Double_t xcluster = cl[ih][it]->GetX();
3594 track2.GetProlongation(xcluster,ytrack,ztrack );
3595 dz[ih][it] = cl[ih][it]->GetZ()- ztrack; // Calculate distance from track in z
3596 dy[ih][it] = cl[ih][it]->GetY() + dz[ih][it]*h01 - ytrack; // and in y
3603 if ((TMath::Abs(cl[0][it]->GetZ()-zmean[it]) > padlength * 0.8) &&
3605 if (TMath::Abs(cl[1][it]->GetZ()-zmean[it]) < padlength * 0.5) {
3613 // Iterative choice of "best path"
3615 Int_t label = TMath::Abs(track->GetLabel());
3618 for (Int_t iter = 0; iter < 9; iter++) {
3633 for (Int_t it = 0; it < t1 - t0; it++) {
3635 if (!cl[best[iter][it]][it]) {
3639 // Calculates pad-row changes
3640 Double_t zbefore = cl[best[iter][it]][it]->GetZ();
3641 Double_t zafter = cl[best[iter][it]][it]->GetZ();
3642 for (Int_t itd = it - 1; itd >= 0; itd--) {
3643 if (cl[best[iter][itd]][itd]) {
3644 zbefore = cl[best[iter][itd]][itd]->GetZ();
3648 for (Int_t itd = it + 1; itd < t1 - t0; itd++) {
3649 if (cl[best[iter][itd]][itd]) {
3650 zafter = cl[best[iter][itd]][itd]->GetZ();
3654 if ((TMath::Abs(cl[best[iter][it]][it]->GetZ()-zbefore) > 0.1) &&
3655 (TMath::Abs(cl[best[iter][it]][it]->GetZ()- zafter) > 0.1)) {
3659 Double_t dx = x[it]-xmean; // Distance to reference x
3660 sumz += cl[best[iter][it]][it]->GetZ();
3662 sumdy += dy[best[iter][it]][it];
3663 sumdy2 += dy[best[iter][it]][it]*dy[best[iter][it]][it];
3666 sumxy += dx*dy[best[iter][it]][it];
3667 mpads += cl[best[iter][it]][it]->GetNPads();
3668 if ((cl[best[iter][it]][it]->GetLabel(0) == label) ||
3669 (cl[best[iter][it]][it]->GetLabel(1) == label) ||
3670 (cl[best[iter][it]][it]->GetLabel(2) == label)) {
3680 // calculates line parameters
3682 Double_t det = sum*sumx2 - sumx*sumx;
3683 angle[iter] = (sum*sumxy - sumx*sumdy) / det;
3684 mean[iter] = (sumx2*sumdy - sumx*sumxy) / det;
3685 meanz[iter] = sumz / sum;
3686 moffset[iter] = sumdy / sum;
3687 mpads /= sum; // Mean number of pads
3689 Double_t sigma2 = 0.0; // Normalized residuals - for line fit
3690 Double_t sigma1 = 0.0; // Normalized residuals - constant fit
3692 for (Int_t it = 0; it < t1 - t0; it++) {
3693 if (!cl[best[iter][it]][it]) {
3696 Double_t dx = x[it] - xmean;
3697 Double_t ytr = mean[iter] + angle[iter] * dx;
3698 sigma2 += (dy[best[iter][it]][it] - ytr)
3699 * (dy[best[iter][it]][it] - ytr);
3700 sigma1 += (dy[best[iter][it]][it] - moffset[iter])
3701 * (dy[best[iter][it]][it] - moffset[iter]);
3704 sigma2 /= (sum - 2); // Normalized residuals
3705 sigma1 /= (sum - 1); // Normalized residuals
3706 smean[iter] = sigma2 * (sumx2 / det); // Estimated error2 of mean
3707 sangle[iter] = sigma2 * ( sum / det); // Estimated error2 of angle
3708 smeanangle[iter] = sigma2 * (-sumx / det); // Correlation
3709 sigmas[iter] = TMath::Sqrt(sigma1);
3710 smoffset[iter] = (sigma1 / sum) + 0.01*0.01; // Sigma of mean offset + unisochronity sigma
3713 // Iterative choice of "better path"
3715 for (Int_t it = 0; it < t1 - t0; it++) {
3717 if (!cl[best[iter][it]][it]) {
3721 // Add unisochronity + angular effect contribution
3722 Double_t sigmatr2 = smoffset[iter] + 0.5*tany*tany;
3723 Double_t sweight = 1.0/sigmatr2 + 1.0/track->GetSigmaY2();
3724 Double_t weighty = (moffset[iter] / sigmatr2) / sweight; // Weighted mean
3725 Double_t sigmacl = TMath::Sqrt(sigma1*sigma1 + track->GetSigmaY2());
3726 Double_t mindist = 100000.0;
3729 for (Int_t ih = 0; ih < 10; ih++) {
3733 Double_t dist2 = (dy[ih][it] - weighty) / sigmacl;
3734 dist2 *= dist2; // Chi2 distance
3735 if (dist2 < mindist) {
3740 best[iter+1][it] = ihbest;
3744 // Update best hypothesy if better chi2 according tracklet position and angle
3746 Double_t sy2 = smean[iter] + track->GetSigmaY2();
3747 Double_t sa2 = sangle[iter] + track->GetSigmaSnp2(); // track->fCee;
3748 Double_t say = track->GetSigmaSnpY(); // track->fCey;
3749 //Double_t chi20 = mean[bestiter]*mean[bestiter ] / sy2+angle[bestiter]*angle[bestiter]/sa2;
3750 //Double_t chi21 = mean[iter]*mean[iter] / sy2+angle[iter]*angle[iter]/sa2;
3752 Double_t detchi = sy2*sa2 - say*say;
3753 Double_t invers[3] = {sa2/detchi,sy2/detchi,-say/detchi}; // Inverse value of covariance matrix
3755 Double_t chi20 = mean[bestiter] * mean[bestiter] * invers[0]
3756 + angle[bestiter] * angle[bestiter] * invers[1]
3757 + 2.0 * mean[bestiter] * angle[bestiter] * invers[2];
3758 Double_t chi21 = mean[iter] * mean[iter] * invers[0]
3759 + angle[iter] * angle[iter] * invers[1]
3760 + 2.0 * mean[iter] * angle[iter] * invers[2];
3761 tchi2s[iter] = chi21;
3763 if ((changes[iter] <= changes[bestiter]) &&
3773 Double_t sigma2 = sigmas[0]; // Choose as sigma from 0 iteration
3774 Short_t maxpos = -1;
3775 Float_t maxcharge = 0.0;
3776 Short_t maxpos4 = -1;
3777 Float_t maxcharge4 = 0.0;
3778 Short_t maxpos5 = -1;
3779 Float_t maxcharge5 = 0.0;
3781 //if (tchi2s[bestiter]>25.) sigma2*=tchi2s[bestiter]/25.;
3782 //if (tchi2s[bestiter]>25.) sigma2=1000.; // dont'accept
3784 Double_t exB = AliTRDcalibDB::Instance()->GetOmegaTau(AliTRDcalibDB::Instance()->GetVdrift(0,0,0)
3785 ,-AliTracker::GetBz()*0.1);
3786 Double_t expectederr = sigma2*sigma2 + 0.01*0.01;
3788 expectederr += (mpads - 3.5) * 0.04;
3790 if (changes[bestiter] > 1) {
3791 expectederr += changes[bestiter] * 0.01;
3793 expectederr += (0.03 * (tany-exB)*(tany-exB)) * 15.0;
3794 //if (tchi2s[bestiter]>18.) expectederr*= tchi2s[bestiter]/18.;
3795 //expectederr+=10000;
3797 for (Int_t it = 0; it < t1 - t0; it++) {
3799 if (!cl[best[bestiter][it]][it]) {
3803 cl[best[bestiter][it]][it]->SetSigmaY2(expectederr); // Set cluster error
3804 if (!cl[best[bestiter][it]][it]->IsUsed()) {
3805 cl[best[bestiter][it]][it]->SetY(cl[best[bestiter][it]][it]->GetY());
3806 //cl[best[bestiter][it]][it]->Use();
3809 // Time bins with maximal charge
3810 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge) {
3811 maxcharge = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
3812 maxpos = cl[best[bestiter][it]][it]->GetLocalTimeBin();
3815 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge4) {
3816 if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 4) {
3817 maxcharge4 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
3818 maxpos4 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
3822 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge5) {
3823 if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 5) {
3824 maxcharge5 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
3825 maxpos5 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
3829 // Time bins with maximal charge
3830 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge) {
3831 maxcharge = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
3832 maxpos = cl[best[bestiter][it]][it]->GetLocalTimeBin();
3835 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge4) {
3836 if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 4) {
3837 maxcharge4 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
3838 maxpos4 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
3842 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge5) {
3843 if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 5) {
3844 maxcharge5 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
3845 maxpos5 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
3849 clusters[it+t0] = indexes[best[bestiter][it]][it];
3851 // Still needed ????
3852 //if (cl[best[bestiter][it]][it]->GetLocalTimeBin()>4 &&
3853 //cl[best[bestiter][it]][it]->GetLocalTimeBin()<18) clusters[it+t0]
3854 // = indexes[best[bestiter][it]][it]; //Test
3859 // Set tracklet parameters
3861 Double_t trackleterr2 = smoffset[bestiter] + 0.01*0.01;
3863 trackleterr2 += (mpads - 3.5) * 0.04;
3865 trackleterr2 += changes[bestiter] * 0.01;
3866 trackleterr2 *= TMath::Max(14.0 - nfound,1.0);
3867 trackleterr2 += 0.2 * (tany-exB)*(tany-exB);
3869 // Set tracklet parameters
3871 ,track2.GetY() + moffset[bestiter]
3875 tracklet.SetTilt(h01);
3876 tracklet.SetP0(mean[bestiter]);
3877 tracklet.SetP1(angle[bestiter]);
3878 tracklet.SetN(nfound);
3879 tracklet.SetNCross(changes[bestiter]);
3880 tracklet.SetPlane(plane);
3881 tracklet.SetSigma2(expectederr);
3882 tracklet.SetChi2(tchi2s[bestiter]);
3883 tracklet.SetMaxPos(maxpos,maxpos4,maxpos5);
3884 track->SetTracklets(plane,tracklet);
3885 track->SetNWrong(track->GetNWrong() + nbad[0]);
3890 TClonesArray array0("AliTRDcluster");
3891 TClonesArray array1("AliTRDcluster");
3892 array0.ExpandCreateFast(t1 - t0 + 1);
3893 array1.ExpandCreateFast(t1 - t0 + 1);
3894 TTreeSRedirector &cstream = *fDebugStreamer;
3895 AliTRDcluster dummy;
3899 for (Int_t it = 0; it < t1 - t0; it++) {
3900 dy0[it] = dy[0][it];
3901 dyb[it] = dy[best[bestiter][it]][it];
3903 new(array0[it]) AliTRDcluster(*cl[0][it]);
3906 new(array0[it]) AliTRDcluster(dummy);
3908 if(cl[best[bestiter][it]][it]) {
3909 new(array1[it]) AliTRDcluster(*cl[best[bestiter][it]][it]);
3912 new(array1[it]) AliTRDcluster(dummy);
3915 TGraph graph0(t1-t0,x,dy0);
3916 TGraph graph1(t1-t0,x,dyb);
3917 TGraph graphy(t1-t0,x,yt);
3918 TGraph graphz(t1-t0,x,zt);
3920 if (AliTRDReconstructor::StreamLevel() > 0) {
3921 cstream << "tracklet"
3922 << "track.=" << track // Track parameters
3923 << "tany=" << tany // Tangent of the local track angle
3924 << "xmean=" << xmean // Xmean - reference x of tracklet
3925 << "tilt=" << h01 // Tilt angle
3926 << "nall=" << nall // Number of foundable clusters
3927 << "nfound=" << nfound // Number of found clusters
3928 << "clfound=" << clfound // Total number of found clusters in road
3929 << "mpads=" << mpads // Mean number of pads per cluster
3930 << "plane=" << plane // Plane number
3931 << "detector=" << detector // Detector number
3932 << "road=" << road // The width of the used road
3933 << "graph0.=" << &graph0 // x - y = dy for closest cluster
3934 << "graph1.=" << &graph1 // x - y = dy for second closest cluster
3935 << "graphy.=" << &graphy // y position of the track
3936 << "graphz.=" << &graphz // z position of the track
3937 //<< "fCl.=" << &array0 // closest cluster
3938 //<< "fCl2.=" << &array1 // second closest cluster
3939 << "maxpos=" << maxpos // Maximal charge postion
3940 << "maxcharge=" << maxcharge // Maximal charge
3941 << "maxpos4=" << maxpos4 // Maximal charge postion - after bin 4
3942 << "maxcharge4=" << maxcharge4 // Maximal charge - after bin 4
3943 << "maxpos5=" << maxpos5 // Maximal charge postion - after bin 5
3944 << "maxcharge5=" << maxcharge5 // Maximal charge - after bin 5
3945 << "bestiter=" << bestiter // Best iteration number
3946 << "tracklet.=" << &tracklet // Corrspond to the best iteration
3947 << "tchi20=" << tchi2s[0] // Chi2 of cluster in the 0 iteration
3948 << "tchi2b=" << tchi2s[bestiter] // Chi2 of cluster in the best iteration
3949 << "sigmas0=" << sigmas[0] // Residuals sigma
3950 << "sigmasb=" << sigmas[bestiter] // Residulas sigma
3951 << "ngood0=" << ngood[0] // Number of good clusters in 0 iteration
3952 << "nbad0=" << nbad[0] // Number of bad clusters in 0 iteration
3953 << "ngoodb=" << ngood[bestiter] // in best iteration
3954 << "nbadb=" << nbad[bestiter] // in best iteration
3955 << "changes0=" << changes[0] // Changes of pardrows in iteration number 0
3956 << "changesb=" << changes[bestiter] // Changes of pardrows in best iteration
3957 << "moffset0=" << moffset[0] // Offset fixing angle in iter=0
3958 << "smoffset0=" << smoffset[0] // Sigma of offset fixing angle in iter=0
3959 << "moffsetb=" << moffset[bestiter] // Offset fixing angle in iter=best
3960 << "smoffsetb=" << smoffset[bestiter] // Sigma of offset fixing angle in iter=best
3961 << "mean0=" << mean[0] // Mean dy in iter=0;
3962 << "smean0=" << smean[0] // Sigma of mean dy in iter=0
3963 << "meanb=" << mean[bestiter] // Mean dy in iter=best
3964 << "smeanb=" << smean[bestiter] // Sigma of mean dy in iter=best
3965 << "angle0=" << angle[0] // Angle deviation in the iteration number 0
3966 << "sangle0=" << sangle[0] // Sigma of angular deviation in iteration number 0
3967 << "angleb=" << angle[bestiter] // Angle deviation in the best iteration
3968 << "sangleb=" << sangle[bestiter] // Sigma of angle deviation in the best iteration
3969 << "expectederr=" << expectederr // Expected error of cluster position
3977 //_____________________________________________________________________________
3978 Int_t AliTRDtracker::Freq(Int_t n, const Int_t *inlist
3979 , Int_t *outlist, Bool_t down)
3982 // Sort eleements according occurancy
3983 // The size of output array has is 2*n
3990 Int_t *sindexS = new Int_t[n]; // Temporary array for sorting
3991 Int_t *sindexF = new Int_t[2*n];
3992 for (Int_t i = 0; i < n; i++) {
3996 TMath::Sort(n,inlist,sindexS,down);
3998 Int_t last = inlist[sindexS[0]];
4001 sindexF[0+n] = last;
4005 for (Int_t i = 1; i < n; i++) {
4006 val = inlist[sindexS[i]];
4008 sindexF[countPos]++;
4012 sindexF[countPos+n] = val;
4013 sindexF[countPos]++;
4021 // Sort according frequency
4022 TMath::Sort(countPos,sindexF,sindexS,kTRUE);
4024 for (Int_t i = 0; i < countPos; i++) {
4025 outlist[2*i ] = sindexF[sindexS[i]+n];
4026 outlist[2*i+1] = sindexF[sindexS[i]];
4036 //_____________________________________________________________________________
4037 AliTRDtrack *AliTRDtracker::RegisterSeed(AliTRDseed *seeds, Double_t *params)
4043 Double_t alpha = AliTRDgeometry::GetAlpha();
4044 Double_t shift = AliTRDgeometry::GetAlpha()/2.0;
4048 c[ 1] = 0.0; c[ 2] = 2.0;
4049 c[ 3] = 0.0; c[ 4] = 0.0; c[ 5] = 0.02;
4050 c[ 6] = 0.0; c[ 7] = 0.0; c[ 8] = 0.0; c[ 9] = 0.1;
4051 c[10] = 0.0; c[11] = 0.0; c[12] = 0.0; c[13] = 0.0; c[14] = params[5]*params[5]*0.01;
4054 AliTRDcluster *cl = 0;
4056 for (Int_t ilayer = 0; ilayer < 6; ilayer++) {
4057 if (seeds[ilayer].IsOK()) {
4058 for (Int_t itime = 22; itime > 0; itime--) {
4059 if (seeds[ilayer].GetIndexes(itime) > 0) {
4060 index = seeds[ilayer].GetIndexes(itime);
4061 cl = seeds[ilayer].GetClusters(itime);
4074 AliTRDtrack *track = new AliTRDtrack(cl
4079 ,params[6]*alpha+shift);
4080 // SetCluster(cl, 0); // A. Bercuci
4081 track->PropagateTo(params[0]-5.0);
4082 track->ResetCovariance(1);
4084 Int_t rc = FollowBackProlongation(*track);
4091 track->CookdEdxTimBin(-1);
4092 CookLabel(track,0.9);
4098 //////////////////////////////////////////////////////////////////////////////////////////
4100 void AliTRDtracker::InitLogHists() {
4102 fHBackfit = new TH1D("logTRD_backfit", "", 40, -0.5, 39.5);
4103 fHRefit = new TH1D("logTRD_refit", "", 40, -0.5, 39.5);
4104 fHClSearch = new TH1D("logTRD_clSearch", "", 60, -0.5, 59.5);
4106 fHX = new TH1D("logTRD_X", ";x (cm)", 200, 50, 400);
4107 fHNCl = new TH1D("logTRD_ncl", "", 40, -0.5, 39.5);
4108 fHNClTrack = new TH1D("logTRD_nclTrack", "", 180, -0.5, 179.5);
4110 fHMinYPos = new TH1D("logTRD_minYPos", ";#delta Y (cm)", 400, -6, 6);
4111 fHMinYNeg = new TH1D("logTRD_minYNeg", ";#delta Y (cm)", 400, -6, 6);
4112 fHMinZ = new TH1D("logTRD_minZ", ";#delta Z (cm)", 400, -20, 20);
4113 fHMinD = new TH2D("logTRD_minD", ";#delta Y (cm);#delta Z (cm)", 100, -6, 6, 100, -50, 50);
4115 fHDeltaX = new TH1D("logTRD_deltaX", ";#delta X (cm)", 100, -5, 5);
4116 fHXCl = new TH1D("logTRD_xCl", ";cluster x position (cm)", 1000, 280, 380);
4118 const char *nameFindCl[4] = {"logTRD_clY", "logTRD_clZ", "logTRD_clB", "logTRD_clG"};
4120 for(int i=0; i<4; i++) {
4121 fHFindCl[i] = new TH1D(nameFindCl[i], "", 30, -0.5, 29.5);
4125 //////////////////////////////////////////////////////////////////////////////////////////
4127 void AliTRDtracker::SaveLogHists() {
4129 TDirectory *sav = gDirectory;
4132 TSeqCollection *col = gROOT->GetListOfFiles();
4133 int N = col->GetEntries();
4134 for(int i=0; i<N; i++) {
4135 logFile = (TFile*)col->At(i);
4136 if (strstr(logFile->GetName(), "AliESDs.root")) break;
4140 fHBackfit->Write(fHBackfit->GetName(), TObject::kOverwrite);
4141 fHRefit->Write(fHRefit->GetName(), TObject::kOverwrite);
4142 fHClSearch->Write(fHClSearch->GetName(), TObject::kOverwrite);
4143 fHX->Write(fHX->GetName(), TObject::kOverwrite);
4144 fHNCl->Write(fHNCl->GetName(), TObject::kOverwrite);
4145 fHNClTrack->Write(fHNClTrack->GetName(), TObject::kOverwrite);
4147 fHMinYPos->Write(fHMinYPos->GetName(), TObject::kOverwrite);
4148 fHMinYNeg->Write(fHMinYNeg->GetName(), TObject::kOverwrite);
4149 fHMinD->Write(fHMinD->GetName(), TObject::kOverwrite);
4150 fHMinZ->Write(fHMinZ->GetName(), TObject::kOverwrite);
4152 fHDeltaX->Write(fHDeltaX->GetName(), TObject::kOverwrite);
4153 fHXCl->Write(fHXCl->GetName(), TObject::kOverwrite);
4156 for(int i=0; i<4; i++)
4157 fHFindCl[i]->Write(fHFindCl[i]->GetName(), TObject::kOverwrite);
4164 //////////////////////////////////////////////////////////////////////////////////////////