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 **************************************************************************/
16 ///////////////////////////////////////////////////////////////////////////////
18 // The standard TRD tracker //
19 // Based on Kalman filltering approach //
22 // M. Ivanov (Marian.Ivanov@cern.ch) //
23 // Y. Belikov (Jouri.Belikov@cern.ch) //
25 ///////////////////////////////////////////////////////////////////////////////
28 #include <Riostream.h>
34 #include <TLinearFitter.h>
35 #include <TObjArray.h>
38 #include <TTreeStream.h>
41 #include "AliESDEvent.h"
42 #include "AliESDtrack.h"
43 #include "AliAlignObj.h"
44 #include "AliRieman.h"
45 #include "AliTrackPointArray.h"
47 #include "AliTRDgeometry.h"
48 #include "AliTRDpadPlane.h"
49 #include "AliTRDgeometry.h"
50 #include "AliTRDcluster.h"
51 #include "AliTRDtrack.h"
52 #include "AliTRDseed.h"
53 #include "AliTRDcalibDB.h"
54 #include "AliTRDCommonParam.h"
55 #include "AliTRDtrackerHLT.h"
56 #include "AliTRDReconstructor.h"
57 #include "AliTRDCalibraFillHisto.h"
59 ClassImp(AliTRDtrackerHLT)
61 const Float_t AliTRDtrackerHLT::fgkMinClustersInTrack = 0.5;
62 const Float_t AliTRDtrackerHLT::fgkLabelFraction = 0.8; // ??
63 const Double_t AliTRDtrackerHLT::fgkMaxChi2 = 12.0;
64 const Double_t AliTRDtrackerHLT::fgkMaxSnp = 0.95; // Corresponds to tan = 3
65 const Double_t AliTRDtrackerHLT::fgkMaxStep = 2.0; // Maximal step size in propagation
67 //_____________________________________________________________________________
68 AliTRDtrackerHLT::AliTRDtrackerHLT()
95 // Default constructor
98 for (Int_t i = 0; i < AliTRDtrackingHLT::kTrackingSectors; i++) {
101 for (Int_t j = 0; j < 5; j++) {
102 for (Int_t k = 0; k < 18; k++) {
103 fHoles[j][k] = kFALSE;
111 //_____________________________________________________________________________
112 AliTRDtrackerHLT::AliTRDtrackerHLT(const AliTRDtrackerHLT &t)
133 ,fTimeBinsPerPlane(0)
134 ,fAddTRDseeds(kFALSE)
144 //_____________________________________________________________________________
145 AliTRDtrackerHLT::AliTRDtrackerHLT(const TFile *geomfile)
161 ,fClusters(new TObjArray(2000))
163 ,fSeeds(new TObjArray(2000))
165 ,fTracks(new TObjArray(1000))
166 ,fTimeBinsPerPlane(0)
167 ,fAddTRDseeds(kFALSE)
175 TDirectory *savedir = gDirectory;
176 TFile *in = (TFile *) geomfile;
179 AliWarning("geometry file is not open!\n");
180 AliWarning("FULL TRD geometry and DEFAULT TRD parameter will be used\n");
184 fGeom = (AliTRDgeometry *) in->Get("TRDgeometry");
186 AliWarning("Attempt to retrieve geometry from file failed!");
191 AliWarning("Cannot find TRD geometry!");
192 fGeom = new AliTRDgeometry();
194 fGeom->ReadGeoMatrices();
198 for (Int_t geomS = 0; geomS < AliTRDtrackingHLT::kTrackingSectors; geomS++) {
200 fTrSec[trS] = new AliTRDtrackingSectorHLT(fGeom,geomS);
201 for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) {
202 fHoles[icham][trS] = fGeom->IsHole(0,icham,geomS);
206 AliTRDpadPlane *padPlane = fGeom->GetPadPlane(0,0);
207 Float_t tiltAngle = TMath::Abs(padPlane->GetTiltingAngle());
208 if (tiltAngle < 0.1) {
212 if (!AliTRDcalibDB::Instance()) {
213 AliFatal("Could not get calibration object");
215 fTimeBinsPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
217 fDebugStreamer = new TTreeSRedirector("TRDdebug.root");
225 //_____________________________________________________________________________
226 AliTRDtrackerHLT::~AliTRDtrackerHLT()
229 // Destructor of AliTRDtrackerHLT
249 for (Int_t geomS = 0; geomS < AliTRDtrackingHLT::kTrackingSectors; geomS++) {
250 delete fTrSec[geomS];
253 if (fDebugStreamer) {
254 delete fDebugStreamer;
259 //_____________________________________________________________________________
260 Int_t AliTRDtrackerHLT::LocalToGlobalID(Int_t lid)
263 // Transform internal TRD ID to global detector ID
266 Int_t isector = fGeom->GetSector(lid);
267 Int_t ichamber = fGeom->GetChamber(lid);
268 Int_t iplan = fGeom->GetPlane(lid);
270 #ifdef HAVNT_ALIGEOMMANAGER
271 // this was introcuced for backward compatibility with AliRoot v4-05-Release
272 AliAlignObj::ELayerID iLayer = AliAlignObj::kTRD1;
275 iLayer = AliAlignObj::kTRD1;
278 iLayer = AliAlignObj::kTRD2;
281 iLayer = AliAlignObj::kTRD3;
284 iLayer = AliAlignObj::kTRD4;
287 iLayer = AliAlignObj::kTRD5;
290 iLayer = AliAlignObj::kTRD6;
294 Int_t modId = isector * fGeom->Ncham() + ichamber;
295 UShort_t volid = AliAlignObj::LayerToVolUID(iLayer,modId);
296 #else //HAVNT_ALIGEOMMANAGER
298 AliGeomManager::ELayerID iLayer = AliGeomManager::kTRD1;
301 iLayer = AliGeomManager::kTRD1;
304 iLayer = AliGeomManager::kTRD2;
307 iLayer = AliGeomManager::kTRD3;
310 iLayer = AliGeomManager::kTRD4;
313 iLayer = AliGeomManager::kTRD5;
316 iLayer = AliGeomManager::kTRD6;
320 Int_t modId = isector * fGeom->Ncham() + ichamber;
321 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,modId);
322 #endif //HAVNT_ALIGEOMMANAGER
328 //_____________________________________________________________________________
329 Int_t AliTRDtrackerHLT::GlobalToLocalID(Int_t gid)
332 // Transform global detector ID to local detector ID
335 #ifdef HAVNT_ALIGEOMMANAGER
336 // this was introcuced for backward compatibility with AliRoot v4-05-Release
338 AliAlignObj::ELayerID layerId = AliAlignObj::VolUIDToLayer(gid,modId);
340 Int_t isector = modId / fGeom->Ncham();
341 Int_t ichamber = modId % fGeom->Ncham();
345 case AliAlignObj::kTRD1:
348 case AliAlignObj::kTRD2:
351 case AliAlignObj::kTRD3:
354 case AliAlignObj::kTRD4:
357 case AliAlignObj::kTRD5:
360 case AliAlignObj::kTRD6:
371 Int_t lid = fGeom->GetDetector(iLayer,ichamber,isector);
372 #else //HAVNT_ALIGEOMMANAGER
375 AliGeomManager::ELayerID layerId = AliGeomManager::VolUIDToLayer(gid,modId);
377 Int_t isector = modId / fGeom->Ncham();
378 Int_t ichamber = modId % fGeom->Ncham();
382 case AliGeomManager::kTRD1:
385 case AliGeomManager::kTRD2:
388 case AliGeomManager::kTRD3:
391 case AliGeomManager::kTRD4:
394 case AliGeomManager::kTRD5:
397 case AliGeomManager::kTRD6:
408 Int_t lid = fGeom->GetDetector(iLayer,ichamber,isector);
409 #endif //HAVNT_ALIGEOMMANAGER
415 //_____________________________________________________________________________
416 Bool_t AliTRDtrackerHLT::Transform(AliTRDcluster *cluster)
419 // Transform something ... whatever ...
422 // Magic constants for geo manager transformation
423 const Double_t kX0shift = 2.52;
424 const Double_t kX0shift5 = 3.05;
427 // Apply alignment and calibration to transform cluster
429 Int_t detector = cluster->GetDetector();
430 Int_t plane = fGeom->GetPlane(cluster->GetDetector());
431 Int_t chamber = fGeom->GetChamber(cluster->GetDetector());
432 Int_t sector = fGeom->GetSector(cluster->GetDetector());
434 Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region
435 Double_t driftX = TMath::Max(cluster->GetX()-dxAmp*0.5,0.0); // Drift distance
440 Double_t vdrift = AliTRDcalibDB::Instance()->GetVdrift(cluster->GetDetector(),0,0);
441 Double_t exB = AliTRDcalibDB::Instance()->GetOmegaTau(vdrift,-AliTracker::GetBz()*0.1);
443 AliTRDpadPlane *padPlane = fGeom->GetPadPlane(plane,chamber);
444 Double_t zshiftIdeal = 0.5*(padPlane->GetRow0()+padPlane->GetRowEnd());
445 Double_t localPos[3];
446 Double_t localPosTracker[3];
447 localPos[0] = -cluster->GetX();
448 localPos[1] = cluster->GetY() - driftX * exB;
449 localPos[2] = cluster->GetZ() - zshiftIdeal;
451 cluster->SetY(cluster->GetY() - driftX*exB);
452 Double_t xplane = (Double_t) AliTRDgeometry::GetTime0(plane);
453 cluster->SetX(xplane - cluster->GetX());
455 TGeoHMatrix *matrix = fGeom->GetCorrectionMatrix(cluster->GetDetector());
457 // No matrix found - if somebody used geometry with holes
458 AliError("Invalid Geometry - Default Geometry used\n");
461 matrix->LocalToMaster(localPos,localPosTracker);
463 if (AliTRDReconstructor::StreamLevel() > 1) {
464 (* fDebugStreamer) << "Transform"
466 << "matrix.=" << matrix
467 << "Detector=" << detector
468 << "Sector=" << sector
470 << "Chamber=" << chamber
471 << "lx0=" << localPosTracker[0]
472 << "ly0=" << localPosTracker[1]
473 << "lz0=" << localPosTracker[2]
478 cluster->SetX(localPosTracker[0]+kX0shift5);
481 cluster->SetX(localPosTracker[0]+kX0shift);
484 cluster->SetY(localPosTracker[1]);
485 cluster->SetZ(localPosTracker[2]);
491 //_____________________________________________________________________________
492 // Bool_t AliTRDtrackerHLT::Transform(AliTRDcluster *cluster)
495 // // Is this still needed ????
497 // const Double_t kDriftCorrection = 1.01; // drift coeficient correction
498 // const Double_t kTime0Cor = 0.32; // time0 correction
500 // const Double_t kX0shift = 2.52;
501 // const Double_t kX0shift5 = 3.05;
504 // // apply alignment and calibration to transform cluster
507 // Int_t detector = cluster->GetDetector();
508 // Int_t plane = fGeom->GetPlane(cluster->GetDetector());
509 // Int_t chamber = fGeom->GetChamber(cluster->GetDetector());
510 // Int_t sector = fGeom->GetSector(cluster->GetDetector());
512 // Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region
513 // Double_t driftX = TMath::Max(cluster->GetX()-dxAmp*0.5,0.); // drift distance
517 // Double_t vdrift = AliTRDcalibDB::Instance()->GetVdrift(cluster->GetDetector(),0,0);
518 // Double_t exB = AliTRDcalibDB::Instance()->GetOmegaTau(vdrift,-AliTracker::GetBz()*0.1);
521 // AliTRDCommonParam* commonParam = AliTRDCommonParam::Instance();
522 // AliTRDpadPlane * padPlane = commonParam->GetPadPlane(plane,chamber);
523 // Double_t zshiftIdeal = 0.5*(padPlane->GetRow0()+padPlane->GetRowEnd());
524 // Double_t localPos[3], globalPos[3], localPosTracker[3], localPosTracker2[3];
525 // localPos[2] = -cluster->GetX();
526 // localPos[0] = cluster->GetY() - driftX*exB;
527 // localPos[1] = cluster->GetZ() -zshiftIdeal;
528 // TGeoHMatrix * matrix = fGeom->GetGeoMatrix(cluster->GetDetector());
529 // matrix->LocalToMaster(localPos, globalPos);
531 // Double_t sectorAngle = 20.*(sector%18)+10;
532 // TGeoHMatrix rotSector;
533 // rotSector.RotateZ(sectorAngle);
534 // rotSector.LocalToMaster(globalPos, localPosTracker);
537 // TGeoHMatrix matrix2(*matrix);
538 // matrix2.MultiplyLeft(&rotSector);
539 // matrix2.LocalToMaster(localPos,localPosTracker2);
543 // cluster->SetY(cluster->GetY() - driftX*exB);
544 // Double_t xplane = (Double_t) AliTRDgeometry::GetTime0(plane);
545 // cluster->SetX(xplane- kDriftCorrection*(cluster->GetX()-kTime0Cor));
546 // (*fDebugStreamer)<<"Transform"<<
548 // "matrix.="<<matrix<<
549 // "matrix2.="<<&matrix2<<
550 // "Detector="<<detector<<
551 // "Sector="<<sector<<
553 // "Chamber="<<chamber<<
554 // "lx0="<<localPosTracker[0]<<
555 // "ly0="<<localPosTracker[1]<<
556 // "lz0="<<localPosTracker[2]<<
557 // "lx2="<<localPosTracker2[0]<<
558 // "ly2="<<localPosTracker2[1]<<
559 // "lz2="<<localPosTracker2[2]<<
563 // cluster->SetX(localPosTracker[0]+kX0shift5);
565 // cluster->SetX(localPosTracker[0]+kX0shift);
567 // cluster->SetY(localPosTracker[1]);
568 // cluster->SetZ(localPosTracker[2]);
572 //_____________________________________________________________________________
573 Bool_t AliTRDtrackerHLT::AdjustSector(AliTRDtrack *track)
576 // Rotates the track when necessary
579 Double_t alpha = AliTRDgeometry::GetAlpha();
580 Double_t y = track->GetY();
581 Double_t ymax = track->GetX()*TMath::Tan(0.5*alpha);
583 // Is this still needed ????
584 //Int_t ns = AliTRDgeometry::kNsect;
585 //Int_t s=Int_t(track->GetAlpha()/alpha)%ns;
589 if (!track->Rotate( alpha)) {
593 else if (y < -ymax) {
595 if (!track->Rotate(-alpha)) {
604 //_____________________________________________________________________________
605 AliTRDcluster *AliTRDtrackerHLT::GetCluster(AliTRDtrack *track, Int_t plane
606 , Int_t timebin, UInt_t &index)
609 // Try to find cluster in the backup list
612 AliTRDcluster *cl =0;
613 Int_t *indexes = track->GetBackupIndexes();
615 for (UInt_t i = 0; i < AliTRDtrackingHLT::kMaxTimeBinIndex; i++) {
616 if (indexes[i] == 0) {
619 AliTRDcluster *cli = (AliTRDcluster *) fClusters->UncheckedAt(indexes[i]);
623 if (cli->GetLocalTimeBin() != timebin) {
626 Int_t iplane = fGeom->GetPlane(cli->GetDetector());
627 if (iplane == plane) {
638 //_____________________________________________________________________________
639 Int_t AliTRDtrackerHLT::GetLastPlane(AliTRDtrack *track)
642 // Return last updated plane
646 Int_t *indexes = track->GetBackupIndexes();
648 for (UInt_t i = 0; i < AliTRDtrackingHLT::kMaxTimeBinIndex; i++) {
649 AliTRDcluster *cli = (AliTRDcluster *) fClusters->UncheckedAt(indexes[i]);
653 Int_t iplane = fGeom->GetPlane(cli->GetDetector());
654 if (iplane > lastplane) {
663 //_____________________________________________________________________________
664 Int_t AliTRDtrackerHLT::Clusters2Tracks(AliESDEvent *event)
667 // Finds tracks within the TRD. The ESD event is expected to contain seeds
668 // at the outer part of the TRD. The seeds
669 // are found within the TRD if fAddTRDseeds is TRUE.
670 // The tracks are propagated to the innermost time bin
671 // of the TRD and the ESD event is updated
674 Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins();
675 Float_t foundMin = fgkMinClustersInTrack * timeBins;
678 //Int_t innerTB = fTrSec[0]->GetInnerTimeBin();
680 Int_t n = event->GetNumberOfTracks();
681 for (Int_t i = 0; i < n; i++) {
683 AliESDtrack *seed = event->GetTrack(i);
684 ULong_t status = seed->GetStatus();
685 if ((status & AliESDtrack::kTRDout) == 0) {
688 if ((status & AliESDtrack::kTRDin) != 0) {
693 AliTRDtrack *seed2 = new AliTRDtrack(*seed);
694 //seed2->ResetCovariance();
695 AliTRDtrack *pt = new AliTRDtrack(*seed2,seed2->GetAlpha());
696 AliTRDtrack &t = *pt;
697 FollowProlongation(t);
698 if (t.GetNumberOfClusters() >= foundMin) {
700 CookLabel(pt,1 - fgkLabelFraction);
705 Double_t xTPC = 250.0;
706 if (PropagateToX(t,xTPC,fgkMaxStep)) {
707 seed->UpdateTrackParams(pt, AliESDtrack::kTRDin);
714 AliInfo(Form("Number of loaded seeds: %d",nseed));
715 AliInfo(Form("Number of found tracks from loaded seeds: %d",found));
716 AliInfo(Form("Total number of found tracks: %d",found));
722 //_____________________________________________________________________________
723 Int_t AliTRDtrackerHLT::PropagateBack(AliESDEvent *event)
726 // Gets seeds from ESD event. The seeds are AliTPCtrack's found and
727 // backpropagated by the TPC tracker. Each seed is first propagated
728 // to the TRD, and then its prolongation is searched in the TRD.
729 // If sufficiently long continuation of the track is found in the TRD
730 // the track is updated, otherwise it's stored as originaly defined
731 // by the TPC tracker.
734 Int_t found = 0; // number of tracks found
735 Float_t foundMin = 20.0;
736 Int_t n = event->GetNumberOfTracks();
739 Float_t *quality = new Float_t[n];
740 Int_t *index = new Int_t[n];
741 for (Int_t i = 0; i < n; i++) {
742 AliESDtrack *seed = event->GetTrack(i);
743 Double_t covariance[15];
744 seed->GetExternalCovariance(covariance);
745 quality[i] = covariance[0]+covariance[2];
746 //quality[i] = covariance[0];
748 TMath::Sort(n,quality,index,kFALSE);
750 for (Int_t i = 0; i < n; i++) {
752 //AliESDtrack *seed = event->GetTrack(i);
753 AliESDtrack *seed = event->GetTrack(index[i]);
756 ULong_t status = seed->GetStatus();
757 if ((status & AliESDtrack::kTPCout) == 0) {
762 if ((status & AliESDtrack::kTRDout) != 0) {
767 Int_t lbl = seed->GetLabel();
768 AliTRDtrack *track = new AliTRDtrack(*seed);
769 track->SetSeedLabel(lbl);
770 seed->UpdateTrackParams(track,AliESDtrack::kTRDbackup); // Make backup
772 Float_t p4 = track->GetC();
773 Int_t expectedClr = FollowBackProlongation(*track);
776 fHX->Fill(track->GetX());
779 // store the last measurement
781 fHNClTrack->Fill(track->GetNumberOfClusters());
782 if (track->GetNumberOfClusters() >= foundMin) {
786 CookdEdxTimBin(*track);
787 CookLabel(track,1 - fgkLabelFraction);
788 if (track->GetBackupTrack()) {
789 //fHBackfit->Fill(5);
790 UseClusters(track->GetBackupTrack());
791 seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup);
797 // inter-tracks competition ???
798 if ((TMath::Abs(track->GetC() - p4) / TMath::Abs(p4) < 0.2) ||
799 (track->Pt() > 0.8)) {
804 // Make backup for back propagation
807 Int_t foundClr = track->GetNumberOfClusters();
808 if (foundClr >= foundMin) {
810 CookdEdxTimBin(*track);
811 CookLabel(track,1 - fgkLabelFraction);
812 if (track->GetBackupTrack()) {
813 UseClusters(track->GetBackupTrack());
816 // Sign only gold tracks
817 if (track->GetChi2() / track->GetNumberOfClusters() < 4) {
818 if ((seed->GetKinkIndex(0) == 0) &&
819 (track->Pt() < 1.5)) {
823 Bool_t isGold = kFALSE;
826 if (track->GetChi2() / track->GetNumberOfClusters() < 5) {
827 //seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup);
828 if (track->GetBackupTrack()) {
829 seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup);
838 (track->GetNCross() == 0) &&
839 (track->GetChi2() / track->GetNumberOfClusters() < 7)) {
840 //seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup);
841 if (track->GetBackupTrack()) {
842 seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup);
848 (track->GetBackupTrack())) {
849 if ((track->GetBackupTrack()->GetNumberOfClusters() > foundMin) &&
850 ((track->GetBackupTrack()->GetChi2()/(track->GetBackupTrack()->GetNumberOfClusters()+1)) < 7)) {
851 seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup);
856 if ((track->StatusForTOF() > 0) &&
857 (track->GetNCross() == 0) &&
858 (Float_t(track->GetNumberOfClusters()) / Float_t(track->GetNExpected()) > 0.4)) {
859 //seed->UpdateTrackParams(track->GetBackupTrack(), AliESDtrack::kTRDbackup);
867 // Debug part of tracking
868 TTreeSRedirector &cstream = *fDebugStreamer;
869 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.
870 if (AliTRDReconstructor::StreamLevel() > 0) {
871 if (track->GetBackupTrack()) {
873 << "EventNrInFile=" << eventNrInFile
876 << "trdback.=" << track->GetBackupTrack()
881 << "EventNrInFile=" << eventNrInFile
884 << "trdback.=" << track
890 // Propagation to the TOF (I.Belikov)
891 if (track->GetStop() == kFALSE) {
894 Double_t xtof = 371.0;
895 Double_t xTOF0 = 370.0;
897 Double_t c2 = track->GetSnp() + track->GetC() * (xtof - track->GetX());
898 if (TMath::Abs(c2) >= 0.99) {
905 PropagateToX(*track,xTOF0,fgkMaxStep);
907 // Energy losses taken to the account - check one more time
908 c2 = track->GetSnp() + track->GetC() * (xtof - track->GetX());
909 if (TMath::Abs(c2) >= 0.99) {
916 //if (!PropagateToX(*track,xTOF0,fgkMaxStep)) {
917 // fHBackfit->Fill(7);
922 Double_t ymax = xtof * TMath::Tan(0.5 * AliTRDgeometry::GetAlpha());
924 track->GetYAt(xtof,GetBz(),y);
926 if (!track->Rotate( AliTRDgeometry::GetAlpha())) {
932 else if (y < -ymax) {
933 if (!track->Rotate(-AliTRDgeometry::GetAlpha())) {
940 if (track->PropagateTo(xtof)) {
941 seed->UpdateTrackParams(track,AliESDtrack::kTRDout);
944 for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
945 for (Int_t j = 0; j < AliESDtrack::kNSlice; j++) {
946 seed->SetTRDsignals(track->GetPIDsignals(i,j),i,j);
948 seed->SetTRDTimBin(track->GetPIDTimBin(i),i);
950 //seed->SetTRDtrack(new AliTRDtrack(*track));
951 if (track->GetNumberOfClusters() > foundMin) {
962 if ((track->GetNumberOfClusters() > 15) &&
963 (track->GetNumberOfClusters() > 0.5*expectedClr)) {
965 seed->UpdateTrackParams(track,AliESDtrack::kTRDout);
968 //seed->SetStatus(AliESDtrack::kTRDStop);
969 for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
970 for (Int_t j = 0; j <AliESDtrack::kNSlice; j++) {
971 seed->SetTRDsignals(track->GetPIDsignals(i,j),i,j);
973 seed->SetTRDTimBin(track->GetPIDTimBin(i),i);
975 //seed->SetTRDtrack(new AliTRDtrack(*track));
981 seed->SetTRDQuality(track->StatusForTOF());
982 seed->SetTRDBudget(track->GetBudget(0));
988 AliInfo(Form("Number of seeds: %d",fNseeds));
989 AliInfo(Form("Number of back propagated TRD tracks: %d",found));
992 if (AliTRDReconstructor::SeedingOn()) {
993 MakeSeedsMI(3,5,event);
1007 //_____________________________________________________________________________
1008 Int_t AliTRDtrackerHLT::RefitInward(AliESDEvent *event)
1011 // Refits tracks within the TRD. The ESD event is expected to contain seeds
1012 // at the outer part of the TRD.
1013 // The tracks are propagated to the innermost time bin
1014 // of the TRD and the ESD event is updated
1015 // Origin: Thomas KUHR (Thomas.Kuhr@cern.ch)
1018 Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins();
1019 Float_t foundMin = fgkMinClustersInTrack * timeBins;
1022 //Int_t innerTB = fTrSec[0]->GetInnerTimeBin();
1025 Int_t n = event->GetNumberOfTracks();
1026 for (Int_t i = 0; i < n; i++) {
1028 AliESDtrack *seed = event->GetTrack(i);
1029 new (&seed2) AliTRDtrack(*seed);
1032 if (seed2.GetX() < 270.0) {
1033 seed->UpdateTrackParams(&seed2,AliESDtrack::kTRDbackup); // Backup TPC track - only update
1038 ULong_t status = seed->GetStatus();
1039 if ((status & AliESDtrack::kTRDout) == 0) {
1043 if ((status & AliESDtrack::kTRDin) != 0) {
1051 seed2.ResetCovariance(50.0);
1053 AliTRDtrack *pt = new AliTRDtrack(seed2,seed2.GetAlpha());
1054 Int_t *indexes2 = seed2.GetIndexes();
1055 for (Int_t i = 0; i < AliESDtrack::kNPlane;i++) {
1056 for (Int_t j = 0; j < AliESDtrack::kNSlice;j++) {
1057 pt->SetPIDsignals(seed2.GetPIDsignals(i,j),i,j);
1059 pt->SetPIDTimBin(seed2.GetPIDTimBin(i),i);
1062 Int_t *indexes3 = pt->GetBackupIndexes();
1063 for (Int_t i = 0; i < 200;i++) {
1064 if (indexes2[i] == 0) {
1067 indexes3[i] = indexes2[i];
1070 //AliTRDtrack *pt = seed2;
1071 AliTRDtrack &t = *pt;
1072 FollowProlongation(t);
1073 if (t.GetNumberOfClusters() >= foundMin) {
1075 //CookLabel(pt, 1-fgkLabelFraction);
1081 Double_t xTPC = 250.0;
1082 if (PropagateToX(t,xTPC,fgkMaxStep)) {
1084 seed->UpdateTrackParams(pt,AliESDtrack::kTRDrefit);
1087 for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
1088 for (Int_t j = 0; j < AliESDtrack::kNSlice; j++) {
1089 seed->SetTRDsignals(pt->GetPIDsignals(i,j),i,j);
1091 seed->SetTRDTimBin(pt->GetPIDTimBin(i),i);
1095 // If not prolongation to TPC - propagate without update
1097 AliTRDtrack *seed2 = new AliTRDtrack(*seed);
1098 seed2->ResetCovariance(5.0);
1099 AliTRDtrack *pt2 = new AliTRDtrack(*seed2,seed2->GetAlpha());
1101 if (PropagateToX(*pt2,xTPC,fgkMaxStep)) {
1103 CookdEdxTimBin(*pt2);
1104 seed->UpdateTrackParams(pt2,AliESDtrack::kTRDrefit);
1107 for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
1108 for (Int_t j = 0; j < AliESDtrack::kNSlice; j++) {
1109 seed->SetTRDsignals(pt2->GetPIDsignals(i,j),i,j);
1111 seed->SetTRDTimBin(pt2->GetPIDTimBin(i),i);
1121 AliInfo(Form("Number of loaded seeds: %d",nseed));
1122 AliInfo(Form("Number of found tracks from loaded seeds: %d",found));
1128 //_____________________________________________________________________________
1129 Int_t AliTRDtrackerHLT::FollowProlongation(AliTRDtrack &t)
1132 // Starting from current position on track=t this function tries
1133 // to extrapolate the track up to timeBin=0 and to confirm prolongation
1134 // if a close cluster is found. Returns the number of clusters
1135 // expected to be found in sensitive layers
1136 // GeoManager used to estimate mean density
1140 Int_t lastplane = GetLastPlane(&t);
1143 Int_t expectedNumberOfClusters = 0;
1145 for (Int_t iplane = lastplane; iplane >= 0; iplane--) {
1147 Int_t row0 = GetGlobalTimeBin(0,iplane,GetTimeBinsPerPlane()-1);
1148 Int_t rowlast = GetGlobalTimeBin(0,iplane,0);
1151 // Propagate track close to the plane if neccessary
1153 Double_t currentx = fTrSec[0]->GetLayer(rowlast)->GetX();
1154 if (currentx < (-fgkMaxStep + t.GetX())) {
1155 // Propagate closer to chamber - safety space fgkMaxStep
1156 if (!PropagateToX(t,currentx+fgkMaxStep,fgkMaxStep)) {
1161 if (!AdjustSector(&t)) {
1166 // Get material budget
1175 // Starting global position
1177 // End global position
1178 x = fTrSec[0]->GetLayer(row0)->GetX();
1179 if (!t.GetProlongation(x,y,z)) {
1182 xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha());
1183 xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha());
1185 AliTracker::MeanMaterialBudget(xyz0,xyz1,param);
1186 xrho = param[0]*param[4];
1187 xx0 = param[1]; // Get mean propagation parameters
1190 // Propagate and update
1192 sector = t.GetSector();
1193 //for (Int_t itime=GetTimeBinsPerPlane()-1;itime>=0;itime--) {
1194 for (Int_t itime = 0 ; itime < GetTimeBinsPerPlane(); itime++) {
1196 Int_t ilayer = GetGlobalTimeBin(0,iplane,itime);
1197 expectedNumberOfClusters++;
1198 t.SetNExpected(t.GetNExpected() + 1);
1199 if (t.GetX() > 345.0) {
1200 t.SetNExpectedLast(t.GetNExpectedLast() + 1);
1202 AliTRDpropagationLayerHLT &timeBin = *(fTrSec[sector]->GetLayer(ilayer));
1203 AliTRDcluster *cl = 0;
1205 Double_t maxChi2 = fgkMaxChi2;
1210 AliTRDcluster *cl0 = timeBin[0];
1212 // No clusters in given time bin
1216 Int_t plane = fGeom->GetPlane(cl0->GetDetector());
1217 if (plane > lastplane) {
1221 Int_t timebin = cl0->GetLocalTimeBin();
1222 AliTRDcluster *cl2 = GetCluster(&t,plane,timebin,index);
1227 //Double_t h01 = GetTiltFactor(cl); //I.B's fix
1228 //maxChi2=t.GetPredictedChi2(cl,h01);
1233 //if (cl->GetNPads()<5)
1234 Double_t dxsample = timeBin.GetdX();
1235 t.SetSampledEdx(TMath::Abs(cl->GetQ()/dxsample));
1236 Double_t h01 = GetTiltFactor(cl);
1237 Int_t det = cl->GetDetector();
1238 Int_t plane = fGeom->GetPlane(det);
1239 if (t.GetX() > 345.0) {
1240 t.SetNLast(t.GetNLast() + 1);
1241 t.SetChi2Last(t.GetChi2Last() + maxChi2);
1244 Double_t xcluster = cl->GetX();
1245 t.PropagateTo(xcluster,xx0,xrho);
1247 if (!AdjustSector(&t)) {
1250 maxChi2 = t.GetPredictedChi2(cl,h01);
1253 if (!t.UpdateMI(cl,maxChi2,index,h01,plane)) {
1265 return expectedNumberOfClusters;
1269 //_____________________________________________________________________________
1270 Int_t AliTRDtrackerHLT::FollowBackProlongation(AliTRDtrack &t)
1273 // Starting from current radial position of track <t> this function
1274 // extrapolates the track up to outer timebin and in the sensitive
1275 // layers confirms prolongation if a close cluster is found.
1276 // Returns the number of clusters expected to be found in sensitive layers
1277 // Use GEO manager for material Description
1279 // return number of assigned clusters ?
1284 Int_t clusters[1000];
1287 Int_t expectedNumberOfClusters = 0;
1288 Float_t ratio0 = 0.0;
1289 AliTRDtracklet tracklet;
1291 // Calibration fill 2D
1292 AliTRDCalibraFillHisto *calibra = AliTRDCalibraFillHisto::Instance();
1294 AliInfo("Could not get Calibra instance\n");
1296 //this is error prone!!!
1297 if (calibra->GetMITracking()) {
1298 calibra->ResetTrack();
1301 for (Int_t i = 0; i < 1000; i++) {
1305 for (Int_t iplane = 0; iplane < AliESDtrack::kNPlane; iplane++) {
1307 int hb = iplane * 10;
1308 fHClSearch->Fill(hb);
1310 Int_t row0 = GetGlobalTimeBin(0,iplane,GetTimeBinsPerPlane()-1);
1311 Int_t rowlast = GetGlobalTimeBin(0,iplane,0);
1312 Double_t currentx = fTrSec[0]->GetLayer(row0)->GetX();
1313 if (currentx < t.GetX()) {
1314 fHClSearch->Fill(hb+1);
1319 // Propagate closer to chamber if neccessary
1321 if (currentx > (fgkMaxStep + t.GetX())) {
1322 if (!PropagateToX(t,currentx-fgkMaxStep,fgkMaxStep)) {
1323 fHClSearch->Fill(hb+2);
1327 if (!AdjustSector(&t)) {
1328 fHClSearch->Fill(hb+3);
1331 if (TMath::Abs(t.GetSnp()) > fgkMaxSnp) {
1332 fHClSearch->Fill(hb+4);
1337 // Get material budget inside of chamber
1345 // Starting global position
1347 // End global position
1348 x = fTrSec[0]->GetLayer(rowlast)->GetX();
1349 if (!t.GetProlongation(x,y,z)) {
1350 fHClSearch->Fill(hb+5);
1353 xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha());
1354 xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha());
1356 AliTracker::MeanMaterialBudget(xyz0,xyz1,param);
1357 xrho= param[0]*param[4];
1358 xx0 = param[1]; // Get mean propagation parameters
1363 sector = t.GetSector();
1364 Float_t ncl = FindClusters(sector,row0,rowlast,&t,clusters,tracklet);
1365 fHNCl->Fill(tracklet.GetN());
1367 if (tracklet.GetN() < GetTimeBinsPerPlane()/3) {
1368 fHClSearch->Fill(hb+6);
1373 // Propagate and update track
1375 for (Int_t itime = GetTimeBinsPerPlane()-1; itime >= 0; itime--) {
1377 Int_t ilayer = GetGlobalTimeBin(0, iplane,itime);
1378 expectedNumberOfClusters++;
1379 t.SetNExpected(t.GetNExpected() + 1);
1380 if (t.GetX() > 345.0) {
1381 t.SetNExpectedLast(t.GetNExpectedLast() + 1);
1383 AliTRDpropagationLayerHLT &timeBin = *(fTrSec[sector]->GetLayer(ilayer));
1384 AliTRDcluster *cl = 0;
1386 Double_t maxChi2 = fgkMaxChi2;
1391 if (clusters[ilayer] > 0) {
1392 index = clusters[ilayer];
1393 cl = (AliTRDcluster *)GetCluster(index);
1394 //Double_t h01 = GetTiltFactor(cl); // I.B's fix
1395 //maxChi2=t.GetPredictedChi2(cl,h01); //
1400 //if (cl->GetNPads() < 5)
1401 Double_t dxsample = timeBin.GetdX();
1402 t.SetSampledEdx(TMath::Abs(cl->GetQ()/dxsample));
1403 Double_t h01 = GetTiltFactor(cl);
1404 Int_t det = cl->GetDetector();
1405 Int_t plane = fGeom->GetPlane(det);
1406 if (t.GetX() > 345.0) {
1407 t.SetNLast(t.GetNLast() + 1);
1408 t.SetChi2Last(t.GetChi2Last() + maxChi2);
1410 Double_t xcluster = cl->GetX();
1411 t.PropagateTo(xcluster,xx0,xrho);
1412 maxChi2 = t.GetPredictedChi2(cl,h01);
1415 if (!t.UpdateMI(cl,maxChi2,index,h01,plane)) {
1416 if (!t.Update(cl,maxChi2,index,h01)) {
1421 if (calibra->GetMITracking()) {
1422 calibra->UpdateHistograms(cl,&t);
1425 // Reset material budget if 2 consecutive gold
1427 if ((t.GetTracklets(plane).GetN() + t.GetTracklets(plane-1).GetN()) > 20) {
1438 ratio0 = ncl / Float_t(fTimeBinsPerPlane);
1439 Float_t ratio1 = Float_t(t.GetNumberOfClusters()+1) / Float_t(t.GetNExpected()+1);
1440 if ((tracklet.GetChi2() < 18.0) &&
1443 (ratio0+ratio1 > 1.5) &&
1444 (t.GetNCross() == 0) &&
1445 (TMath::Abs(t.GetSnp()) < 0.85) &&
1446 (t.GetNumberOfClusters() > 20)){
1447 //if (ratio0 > 0.8) {
1448 t.MakeBackupTrack(); // Make backup of the track until is gold
1453 return expectedNumberOfClusters;
1456 //_____________________________________________________________________________
1457 Int_t AliTRDtrackerHLT::PropagateToX(AliTRDtrack &t, Double_t xToGo, Double_t maxStep)
1460 // Starting from current radial position of track <t> this function
1461 // extrapolates the track up to radial position <xToGo>.
1462 // Returns 1 if track reaches the plane, and 0 otherwise
1465 const Double_t kEpsilon = 0.00001;
1466 //Double_t tanmax = TMath::Tan(0.5*AliTRDgeometry::GetAlpha());
1467 Double_t xpos = t.GetX();
1468 Double_t dir = (xpos<xToGo) ? 1.0 : -1.0;
1470 while (((xToGo-xpos)*dir) > kEpsilon) {
1472 Double_t step = dir * TMath::Min(TMath::Abs(xToGo-xpos),maxStep);
1480 // Starting global position
1484 if (!t.GetProlongation(x,y,z)) {
1485 return 0; // No prolongation
1488 xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha());
1489 xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha());
1492 AliTracker::MeanMaterialBudget(xyz0,xyz1,param);
1493 if (!t.PropagateTo(x,param[1],param[0]*param[4])) {
1505 //_____________________________________________________________________________
1506 Int_t AliTRDtrackerHLT::LoadClusters(TTree *cTree)
1509 // Fills clusters into TRD tracking_sectors
1510 // Note that the numbering scheme for the TRD tracking_sectors
1511 // differs from that of TRD sectors
1514 if (ReadClusters(fClusters,cTree)) {
1515 AliError("Problem with reading the clusters !");
1518 Int_t ncl = fClusters->GetEntriesFast();
1520 AliInfo(Form("Sorting %d clusters",ncl));
1523 for (Int_t ichamber = 0; ichamber < 5; ichamber++) {
1524 for (Int_t isector = 0; isector < 18; isector++) {
1525 fHoles[ichamber][isector] = kTRUE;
1531 AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(ncl);
1532 Int_t detector = c->GetDetector();
1533 Int_t localTimeBin = c->GetLocalTimeBin();
1534 Int_t sector = fGeom->GetSector(detector);
1535 Int_t plane = fGeom->GetPlane(detector);
1536 Int_t trackingSector = sector;
1538 //if (c->GetLabel(0) > 0) {
1539 if (c->GetQ() > 10) {
1540 Int_t chamber = fGeom->GetChamber(detector);
1541 fHoles[chamber][trackingSector] = kFALSE;
1544 Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(plane,localTimeBin);
1548 Int_t layer = fTrSec[trackingSector]->GetLayerNumber(gtb);
1552 // Apply pos correction
1554 fHXCl->Fill(c->GetX());
1556 fTrSec[trackingSector]->GetLayer(layer)->SetX(c->GetX());
1557 fTrSec[trackingSector]->GetLayer(layer)->InsertCluster(c,index);
1564 //_____________________________________________________________________________
1565 void AliTRDtrackerHLT::UnloadClusters()
1568 // Clears the arrays of clusters and tracks. Resets sectors and timebins
1574 nentr = fClusters->GetEntriesFast();
1575 for (i = 0; i < nentr; i++) {
1576 delete fClusters->RemoveAt(i);
1580 nentr = fSeeds->GetEntriesFast();
1581 for (i = 0; i < nentr; i++) {
1582 delete fSeeds->RemoveAt(i);
1585 nentr = fTracks->GetEntriesFast();
1586 for (i = 0; i < nentr; i++) {
1587 delete fTracks->RemoveAt(i);
1590 Int_t nsec = AliTRDgeometry::kNsect;
1591 for (i = 0; i < nsec; i++) {
1592 for(Int_t pl = 0; pl < fTrSec[i]->GetNumberOfLayers(); pl++) {
1593 fTrSec[i]->GetLayer(pl)->Clear();
1599 //_____________________________________________________________________________
1600 void AliTRDtrackerHLT::MakeSeedsMI(Int_t /*inner*/, Int_t /*outer*/, AliESDEvent *esd)
1603 // Creates seeds using clusters between position inner plane and outer plane
1608 const Double_t kMaxTheta = 1.0;
1609 const Double_t kMaxPhi = 2.0;
1611 const Double_t kRoad0y = 6.0; // Road for middle cluster
1612 const Double_t kRoad0z = 8.5; // Road for middle cluster
1614 const Double_t kRoad1y = 2.0; // Road in y for seeded cluster
1615 const Double_t kRoad1z = 20.0; // Road in z for seeded cluster
1617 const Double_t kRoad2y = 3.0; // Road in y for extrapolated cluster
1618 const Double_t kRoad2z = 20.0; // Road in z for extrapolated cluster
1619 const Int_t kMaxSeed = 3000;
1621 Int_t maxSec = AliTRDgeometry::kNsect;
1623 // Linear fitters in planes
1624 TLinearFitter fitterTC(2,"hyp2"); // Fitting with tilting pads - kz fixed - kz= Z/x, + vertex const
1625 TLinearFitter fitterT2(4,"hyp4"); // Fitting with tilting pads - kz not fixed
1626 fitterTC.StoreData(kTRUE);
1627 fitterT2.StoreData(kTRUE);
1628 AliRieman rieman(1000); // Rieman fitter
1629 AliRieman rieman2(1000); // Rieman fitter
1631 // Find the maximal and minimal layer for the planes
1633 AliTRDpropagationLayerHLT *reflayers[6];
1634 for (Int_t i = 0; i < 6; i++) {
1635 layers[i][0] = 10000;
1638 for (Int_t ns = 0; ns < maxSec; ns++) {
1639 for (Int_t ilayer = 0; ilayer < fTrSec[ns]->GetNumberOfLayers(); ilayer++) {
1640 AliTRDpropagationLayerHLT &layer = *(fTrSec[ns]->GetLayer(ilayer));
1644 Int_t det = layer[0]->GetDetector();
1645 Int_t plane = fGeom->GetPlane(det);
1646 if (ilayer < layers[plane][0]) {
1647 layers[plane][0] = ilayer;
1649 if (ilayer > layers[plane][1]) {
1650 layers[plane][1] = ilayer;
1655 AliTRDpadPlane *padPlane = fGeom->GetPadPlane(0,0);
1656 Double_t h01 = TMath::Tan(-TMath::Pi() / 180.0 * padPlane->GetTiltingAngle());
1657 Double_t hL[6]; // Tilting angle
1658 Double_t xcl[6]; // X - position of reference cluster
1659 Double_t ycl[6]; // Y - position of reference cluster
1660 Double_t zcl[6]; // Z - position of reference cluster
1662 AliTRDcluster *cl[6] = { 0, 0, 0, 0, 0, 0 }; // Seeding clusters
1663 Float_t padlength[6] = { 10.0, 10.0, 10.0, 10.0, 10.0, 10.0 }; // Current pad-length
1665 Double_t chi2R = 0.0;
1666 Double_t chi2Z = 0.0;
1667 Double_t chi2RF = 0.0;
1668 Double_t chi2ZF = 0.0;
1670 Int_t nclusters; // Total number of clusters
1671 for (Int_t i = 0; i < 6; i++) {
1679 AliTRDseed *pseed = new AliTRDseed[kMaxSeed*6];
1680 AliTRDseed *seed[kMaxSeed];
1681 for (Int_t iseed = 0; iseed < kMaxSeed; iseed++) {
1682 seed[iseed]= &pseed[iseed*6];
1684 AliTRDseed *cseed = seed[0];
1686 Double_t seedquality[kMaxSeed];
1687 Double_t seedquality2[kMaxSeed];
1688 Double_t seedparams[kMaxSeed][7];
1689 Int_t seedlayer[kMaxSeed];
1690 Int_t registered = 0;
1691 Int_t sort[kMaxSeed];
1696 for (Int_t ns = 0; ns < maxSec; ns++) { // Loop over sectors
1697 //for (Int_t ns = 0; ns < 5; ns++) { // Loop over sectors
1699 AliInfo(Form("sector %d", ns));
1701 registered = 0; // Reset registerd seed counter
1702 cseed = seed[registered];
1705 for (Int_t sLayer = 2; sLayer >= 0; sLayer--) {
1706 //for (Int_t dseed = 5; dseed < 15; dseed += 3) {
1708 //AliInfo(Form("sLayer %d", sLayer));
1711 Int_t dseed = 5 + Int_t(iter) * 3;
1713 // Initialize seeding layers
1714 for (Int_t ilayer = 0; ilayer < 6; ilayer++) {
1715 reflayers[ilayer] = fTrSec[ns]->GetLayer(layers[ilayer][1]-dseed);
1716 xcl[ilayer] = reflayers[ilayer]->GetX();
1719 Double_t xref = (xcl[sLayer+1] + xcl[sLayer+2]) * 0.5;
1720 AliTRDpropagationLayerHLT &layer0 = *reflayers[sLayer+0];
1721 AliTRDpropagationLayerHLT &layer1 = *reflayers[sLayer+1];
1722 AliTRDpropagationLayerHLT &layer2 = *reflayers[sLayer+2];
1723 AliTRDpropagationLayerHLT &layer3 = *reflayers[sLayer+3];
1725 Int_t maxn3 = layer3;
1726 for (Int_t icl3 = 0; icl3 < maxn3; icl3++) {
1728 //AliInfo(Form("icl3 %d", icl3));
1730 AliTRDcluster *cl3 = layer3[icl3];
1734 padlength[sLayer+3] = TMath::Sqrt(cl3->GetSigmaZ2() * 12.0);
1735 ycl[sLayer+3] = cl3->GetY();
1736 zcl[sLayer+3] = cl3->GetZ();
1737 Float_t yymin0 = ycl[sLayer+3] - 1.0 - kMaxPhi * (xcl[sLayer+3]-xcl[sLayer+0]);
1738 Float_t yymax0 = ycl[sLayer+3] + 1.0 + kMaxPhi * (xcl[sLayer+3]-xcl[sLayer+0]);
1739 Int_t maxn0 = layer0;
1741 for (Int_t icl0 = layer0.Find(yymin0); icl0 < maxn0; icl0++) {
1743 AliTRDcluster *cl0 = layer0[icl0];
1747 if (cl3->IsUsed() && cl0->IsUsed()) {
1750 ycl[sLayer+0] = cl0->GetY();
1751 zcl[sLayer+0] = cl0->GetZ();
1752 if (ycl[sLayer+0] > yymax0) {
1755 Double_t tanphi = (ycl[sLayer+3]-ycl[sLayer+0]) / (xcl[sLayer+3]-xcl[sLayer+0]);
1756 if (TMath::Abs(tanphi) > kMaxPhi) {
1759 Double_t tantheta = (zcl[sLayer+3]-zcl[sLayer+0]) / (xcl[sLayer+3]-xcl[sLayer+0]);
1760 if (TMath::Abs(tantheta) > kMaxTheta) {
1763 padlength[sLayer+0] = TMath::Sqrt(cl0->GetSigmaZ2() * 12.0);
1765 // Expected position in 1 layer
1766 Double_t y1exp = ycl[sLayer+0] + (tanphi) * (xcl[sLayer+1]-xcl[sLayer+0]);
1767 Double_t z1exp = zcl[sLayer+0] + (tantheta) * (xcl[sLayer+1]-xcl[sLayer+0]);
1768 Float_t yymin1 = y1exp - kRoad0y - tanphi;
1769 Float_t yymax1 = y1exp + kRoad0y + tanphi;
1770 Int_t maxn1 = layer1;
1772 for (Int_t icl1 = layer1.Find(yymin1); icl1 < maxn1; icl1++) {
1774 AliTRDcluster *cl1 = layer1[icl1];
1779 if (cl3->IsUsed()) nusedCl++;
1780 if (cl0->IsUsed()) nusedCl++;
1781 if (cl1->IsUsed()) nusedCl++;
1785 ycl[sLayer+1] = cl1->GetY();
1786 zcl[sLayer+1] = cl1->GetZ();
1787 if (ycl[sLayer+1] > yymax1) {
1790 if (TMath::Abs(ycl[sLayer+1]-y1exp) > kRoad0y+tanphi) {
1793 if (TMath::Abs(zcl[sLayer+1]-z1exp) > kRoad0z) {
1796 padlength[sLayer+1] = TMath::Sqrt(cl1->GetSigmaZ2() * 12.0);
1798 Double_t y2exp = ycl[sLayer+0]+(tanphi) * (xcl[sLayer+2]-xcl[sLayer+0]) + (ycl[sLayer+1]-y1exp);
1799 Double_t z2exp = zcl[sLayer+0]+(tantheta) * (xcl[sLayer+2]-xcl[sLayer+0]);
1800 Int_t index2 = layer2.FindNearestCluster(y2exp,z2exp,kRoad1y,kRoad1z);
1804 AliTRDcluster *cl2 = (AliTRDcluster *) GetCluster(index2);
1805 padlength[sLayer+2] = TMath::Sqrt(cl2->GetSigmaZ2() * 12.0);
1806 ycl[sLayer+2] = cl2->GetY();
1807 zcl[sLayer+2] = cl2->GetZ();
1808 if (TMath::Abs(cl2->GetZ()-z2exp) > kRoad0z) {
1813 rieman.AddPoint(xcl[sLayer+0],ycl[sLayer+0],zcl[sLayer+0],1,10);
1814 rieman.AddPoint(xcl[sLayer+1],ycl[sLayer+1],zcl[sLayer+1],1,10);
1815 rieman.AddPoint(xcl[sLayer+3],ycl[sLayer+3],zcl[sLayer+3],1,10);
1816 rieman.AddPoint(xcl[sLayer+2],ycl[sLayer+2],zcl[sLayer+2],1,10);
1820 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
1821 cseed[iLayer].Reset();
1826 for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
1827 cseed[sLayer+iLayer].SetZref(0,rieman.GetZat(xcl[sLayer+iLayer]));
1828 chi2Z += (cseed[sLayer+iLayer].GetZref(0)- zcl[sLayer+iLayer])
1829 * (cseed[sLayer+iLayer].GetZref(0)- zcl[sLayer+iLayer]);
1830 cseed[sLayer+iLayer].SetZref(1,rieman.GetDZat(xcl[sLayer+iLayer]));
1831 cseed[sLayer+iLayer].SetYref(0,rieman.GetYat(xcl[sLayer+iLayer]));
1832 chi2R += (cseed[sLayer+iLayer].GetYref(0)- ycl[sLayer+iLayer])
1833 * (cseed[sLayer+iLayer].GetYref(0)- ycl[sLayer+iLayer]);
1834 cseed[sLayer+iLayer].SetYref(1,rieman.GetDYat(xcl[sLayer+iLayer]));
1836 if (TMath::Sqrt(chi2R) > 1.0/iter) {
1839 if (TMath::Sqrt(chi2Z) > 7.0/iter) {
1843 Float_t minmax[2] = { -100.0, 100.0 };
1844 for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
1845 Float_t max = zcl[sLayer+iLayer]+padlength[sLayer+iLayer] * 0.5
1846 + 1.0 - cseed[sLayer+iLayer].GetZref(0);
1847 if (max < minmax[1]) {
1850 Float_t min = zcl[sLayer+iLayer]-padlength[sLayer+iLayer] * 0.5
1851 - 1.0 - cseed[sLayer+iLayer].GetZref(0);
1852 if (min > minmax[0]) {
1857 Bool_t isFake = kFALSE;
1858 if (cl0->GetLabel(0) != cl3->GetLabel(0)) {
1861 if (cl1->GetLabel(0) != cl3->GetLabel(0)) {
1864 if (cl2->GetLabel(0) != cl3->GetLabel(0)) {
1868 if (AliTRDReconstructor::StreamLevel() > 0) {
1869 if ((!isFake) || ((icl3%10) == 0)) { // Debugging print
1870 TTreeSRedirector &cstream = *fDebugStreamer;
1872 << "isFake=" << isFake
1878 << "X0=" << xcl[sLayer+0]
1879 << "X1=" << xcl[sLayer+1]
1880 << "X2=" << xcl[sLayer+2]
1881 << "X3=" << xcl[sLayer+3]
1882 << "Y2exp=" << y2exp
1883 << "Z2exp=" << z2exp
1884 << "Chi2R=" << chi2R
1885 << "Chi2Z=" << chi2Z
1886 << "Seed0.=" << &cseed[sLayer+0]
1887 << "Seed1.=" << &cseed[sLayer+1]
1888 << "Seed2.=" << &cseed[sLayer+2]
1889 << "Seed3.=" << &cseed[sLayer+3]
1890 << "Zmin=" << minmax[0]
1891 << "Zmax=" << minmax[1]
1896 AliDebug(2, Form("Fit Seeding part"));
1898 ////////////////////////////////////////////////////////////////////////////////////
1902 ////////////////////////////////////////////////////////////////////////////////////
1908 Bool_t isOK = kTRUE;
1910 for (Int_t jLayer = 0; jLayer < 4; jLayer++) {
1912 cseed[sLayer+jLayer].SetTilt(hL[sLayer+jLayer]);
1913 cseed[sLayer+jLayer].SetPadLength(padlength[sLayer+jLayer]);
1914 cseed[sLayer+jLayer].SetX0(xcl[sLayer+jLayer]);
1916 for (Int_t iter = 0; iter < 2; iter++) {
1919 // In iteration 0 we try only one pad-row
1920 // If quality not sufficient we try 2 pad-rows - about 5% of tracks cross 2 pad-rows
1922 AliTRDseed tseed = cseed[sLayer+jLayer];
1923 Float_t roadz = padlength[sLayer+jLayer] * 0.5;
1925 roadz = padlength[sLayer+jLayer];
1928 Float_t quality = 10000.0;
1930 for (Int_t iTime = 2; iTime < 20; iTime++) {
1932 AliTRDpropagationLayerHLT &layer = *(fTrSec[ns]->GetLayer(layers[sLayer+jLayer][1]-iTime));
1933 Double_t dxlayer = layer.GetX() - xcl[sLayer+jLayer];
1934 Double_t zexp = cl[sLayer+jLayer]->GetZ();
1937 // Try 2 pad-rows in second iteration
1938 zexp = tseed.GetZref(0) + tseed.GetZref(1) * dxlayer;
1939 if (zexp > cl[sLayer+jLayer]->GetZ()) {
1940 zexp = cl[sLayer+jLayer]->GetZ() + padlength[sLayer+jLayer]*0.5;
1942 if (zexp < cl[sLayer+jLayer]->GetZ()) {
1943 zexp = cl[sLayer+jLayer]->GetZ() - padlength[sLayer+jLayer]*0.5;
1947 Double_t yexp = tseed.GetYref(0) + tseed.GetYref(1) * dxlayer;
1948 Int_t index = layer.FindNearestCluster(yexp,zexp,kRoad1y,roadz);
1953 AliTRDcluster *cl = (AliTRDcluster *) GetCluster(index);
1955 tseed.SetIndexes(iTime,index);
1956 tseed.SetClusters(iTime,cl); // Register cluster
1957 tseed.SetX(iTime,dxlayer); // Register cluster
1958 tseed.SetY(iTime,cl->GetY()); // Register cluster
1959 tseed.SetZ(iTime,cl->GetZ()); // Register cluster
1965 // Count the number of clusters and distortions into quality
1966 Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1);
1967 Float_t tquality = (18.0 - tseed.GetN2()) / 2.0 + TMath::Abs(dangle) / 0.1
1968 + TMath::Abs(tseed.GetYfit(0) - tseed.GetYref(0)) / 0.2
1969 + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer];
1970 if ((iter == 0) && tseed.IsOK()) {
1971 cseed[sLayer+jLayer] = tseed;
1977 if (tseed.IsOK() && (tquality < quality)) {
1978 cseed[sLayer+jLayer] = tseed;
1983 if (!cseed[sLayer+jLayer].IsOK()) {
1988 cseed[sLayer+jLayer].CookLabels();
1989 cseed[sLayer+jLayer].UpdateUsed();
1990 nusedCl += cseed[sLayer+jLayer].GetNUsed();
2002 for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
2003 if (cseed[sLayer+iLayer].IsOK()) {
2004 nclusters += cseed[sLayer+iLayer].GetN2();
2010 for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
2011 rieman.AddPoint(xcl[sLayer+iLayer]
2012 ,cseed[sLayer+iLayer].GetYfitR(0)
2013 ,cseed[sLayer+iLayer].GetZProb()
2022 for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
2023 cseed[sLayer+iLayer].SetYref(0,rieman.GetYat(xcl[sLayer+iLayer]));
2024 chi2R += (cseed[sLayer+iLayer].GetYref(0) - cseed[sLayer+iLayer].GetYfitR(0))
2025 * (cseed[sLayer+iLayer].GetYref(0) - cseed[sLayer+iLayer].GetYfitR(0));
2026 cseed[sLayer+iLayer].SetYref(1,rieman.GetDYat(xcl[sLayer+iLayer]));
2027 cseed[sLayer+iLayer].SetZref(0,rieman.GetZat(xcl[sLayer+iLayer]));
2028 chi2Z += (cseed[sLayer+iLayer].GetZref(0) - cseed[sLayer+iLayer].GetMeanz())
2029 * (cseed[sLayer+iLayer].GetZref(0) - cseed[sLayer+iLayer].GetMeanz());
2030 cseed[sLayer+iLayer].SetZref(1,rieman.GetDZat(xcl[sLayer+iLayer]));
2032 Double_t curv = rieman.GetC();
2037 Double_t sumda = TMath::Abs(cseed[sLayer+0].GetYfitR(1) - cseed[sLayer+0].GetYref(1))
2038 + TMath::Abs(cseed[sLayer+1].GetYfitR(1) - cseed[sLayer+1].GetYref(1))
2039 + TMath::Abs(cseed[sLayer+2].GetYfitR(1) - cseed[sLayer+2].GetYref(1))
2040 + TMath::Abs(cseed[sLayer+3].GetYfitR(1) - cseed[sLayer+3].GetYref(1));
2041 Double_t likea = TMath::Exp(-sumda*10.6);
2042 Double_t likechi2 = 0.0000000001;
2044 likechi2 += TMath::Exp(-TMath::Sqrt(chi2R) * 7.73);
2046 Double_t likechi2z = TMath::Exp(-chi2Z * 0.088) / TMath::Exp(-chi2Z * 0.019);
2047 Double_t likeN = TMath::Exp(-(72 - nclusters) * 0.19);
2048 Double_t like = likea * likechi2 * likechi2z * likeN;
2049 Double_t likePrimY = TMath::Exp(-TMath::Abs(cseed[sLayer+0].GetYref(1) - 130.0*curv) * 1.9);
2050 Double_t likePrimZ = TMath::Exp(-TMath::Abs(cseed[sLayer+0].GetZref(1)
2051 - cseed[sLayer+0].GetZref(0) / xcl[sLayer+0]) * 5.9);
2052 Double_t likePrim = TMath::Max(likePrimY*likePrimZ,0.0005);
2054 seedquality[registered] = like;
2055 seedlayer[registered] = sLayer;
2056 if (TMath::Log(0.000000000000001 + like) < -15) {
2059 AliTRDseed seedb[6];
2060 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2061 seedb[iLayer] = cseed[iLayer];
2064 AliDebug(2, Form("never here? FULL TRACK FIT PART START"));
2066 ////////////////////////////////////////////////////////////////////////////////////
2068 // Full track fit part
2070 ////////////////////////////////////////////////////////////////////////////////////
2077 // Add new layers - avoid long extrapolation
2079 Int_t tLayer[2] = { 0, 0 };
2093 for (Int_t iLayer = 0; iLayer < 2; iLayer++) {
2094 Int_t jLayer = tLayer[iLayer]; // Set tracking layer
2095 cseed[jLayer].Reset();
2096 cseed[jLayer].SetTilt(hL[jLayer]);
2097 cseed[jLayer].SetPadLength(padlength[jLayer]);
2098 cseed[jLayer].SetX0(xcl[jLayer]);
2099 // Get pad length and rough cluster
2100 Int_t indexdummy = reflayers[jLayer]->FindNearestCluster(cseed[jLayer].GetYref(0)
2101 ,cseed[jLayer].GetZref(0)
2104 if (indexdummy <= 0) {
2107 AliTRDcluster *cldummy = (AliTRDcluster *) GetCluster(indexdummy);
2108 padlength[jLayer] = TMath::Sqrt(cldummy->GetSigmaZ2() * 12.0);
2110 AliTRDseed::FitRiemanTilt(cseed,kTRUE);
2112 for (Int_t iLayer = 0; iLayer < 2; iLayer++) {
2114 Int_t jLayer = tLayer[iLayer]; // set tracking layer
2115 if ((jLayer == 0) && !(cseed[1].IsOK())) {
2116 continue; // break not allowed
2118 if ((jLayer == 5) && !(cseed[4].IsOK())) {
2119 continue; // break not allowed
2121 Float_t zexp = cseed[jLayer].GetZref(0);
2122 Double_t zroad = padlength[jLayer] * 0.5 + 1.0;
2124 for (Int_t iter = 0; iter < 2; iter++) {
2126 AliTRDseed tseed = cseed[jLayer];
2127 Float_t quality = 10000.0;
2129 for (Int_t iTime = 2; iTime < 20; iTime++) {
2130 AliTRDpropagationLayerHLT &layer = *(fTrSec[ns]->GetLayer(layers[jLayer][1]-iTime));
2131 Double_t dxlayer = layer.GetX()-xcl[jLayer];
2132 Double_t yexp = tseed.GetYref(0) + tseed.GetYref(1) * dxlayer;
2133 Float_t yroad = kRoad1y;
2134 Int_t index = layer.FindNearestCluster(yexp,zexp,yroad,zroad);
2138 AliTRDcluster *cl = (AliTRDcluster *) GetCluster(index);
2139 tseed.SetIndexes(iTime,index);
2140 tseed.SetClusters(iTime,cl); // Register cluster
2141 tseed.SetX(iTime,dxlayer); // Register cluster
2142 tseed.SetY(iTime,cl->GetY()); // Register cluster
2143 tseed.SetZ(iTime,cl->GetZ()); // Register cluster
2148 Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1);
2149 Float_t tquality = (18.0 - tseed.GetN2())/2.0 + TMath::Abs(dangle) / 0.1
2150 + TMath::Abs(tseed.GetYfit(0) - tseed.GetYref(0)) / 0.2
2151 + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer];
2152 if (tquality < quality) {
2153 cseed[jLayer] = tseed;
2162 if ( cseed[jLayer].IsOK()) {
2163 cseed[jLayer].CookLabels();
2164 cseed[jLayer].UpdateUsed();
2165 nusedf += cseed[jLayer].GetNUsed();
2166 AliTRDseed::FitRiemanTilt(cseed,kTRUE);
2172 AliTRDseed bseed[6];
2173 for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
2174 bseed[jLayer] = cseed[jLayer];
2176 Float_t lastquality = 10000.0;
2177 Float_t lastchi2 = 10000.0;
2178 Float_t chi2 = 1000.0;
2180 for (Int_t iter = 0; iter < 4; iter++) {
2182 // Sort tracklets according "quality", try to "improve" 4 worst
2183 Float_t sumquality = 0.0;
2184 Float_t squality[6];
2185 Int_t sortindexes[6];
2187 for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
2188 if (bseed[jLayer].IsOK()) {
2189 AliTRDseed &tseed = bseed[jLayer];
2190 Double_t zcor = tseed.GetTilt() * (tseed.GetZProb() - tseed.GetZref(0));
2191 Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1);
2192 Float_t tquality = (18.0 - tseed.GetN2()) / 2.0 + TMath::Abs(dangle) / 0.1
2193 + TMath::Abs(tseed.GetYfit(0) - (tseed.GetYref(0) - zcor)) / 0.2
2194 + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer];
2195 squality[jLayer] = tquality;
2198 squality[jLayer] = -1.0;
2200 sumquality +=squality[jLayer];
2203 if ((sumquality >= lastquality) ||
2204 (chi2 > lastchi2)) {
2207 lastquality = sumquality;
2210 for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
2211 cseed[jLayer] = bseed[jLayer];
2214 TMath::Sort(6,squality,sortindexes,kFALSE);
2216 for (Int_t jLayer = 5; jLayer > 1; jLayer--) {
2218 Int_t bLayer = sortindexes[jLayer];
2219 AliTRDseed tseed = bseed[bLayer];
2221 for (Int_t iTime = 2; iTime < 20; iTime++) {
2223 AliTRDpropagationLayerHLT &layer = *(fTrSec[ns]->GetLayer(layers[bLayer][1]-iTime));
2224 Double_t dxlayer = layer.GetX() - xcl[bLayer];
2225 Double_t zexp = tseed.GetZref(0);
2226 Double_t zcor = tseed.GetTilt() * (tseed.GetZProb() - tseed.GetZref(0));
2227 Float_t roadz = padlength[bLayer] + 1;
2228 if (TMath::Abs(tseed.GetZProb() - zexp) > 0.5*padlength[bLayer]) {
2229 roadz = padlength[bLayer] * 0.5;
2231 if (tseed.GetZfit(1)*tseed.GetZref(1) < 0.0) {
2232 roadz = padlength[bLayer] * 0.5;
2234 if (TMath::Abs(tseed.GetZProb() - zexp) < 0.1*padlength[bLayer]) {
2235 zexp = tseed.GetZProb();
2236 roadz = padlength[bLayer] * 0.5;
2239 Double_t yexp = tseed.GetYref(0) + tseed.GetYref(1) * dxlayer - zcor;
2240 Int_t index = layer.FindNearestCluster(yexp,zexp,kRoad1y,roadz);
2244 AliTRDcluster *cl = (AliTRDcluster *) GetCluster(index);
2246 tseed.SetIndexes(iTime,index);
2247 tseed.SetClusters(iTime,cl); // Register cluster
2248 tseed.SetX(iTime,dxlayer); // Register cluster
2249 tseed.SetY(iTime,cl->GetY()); // Register cluster
2250 tseed.SetZ(iTime,cl->GetZ()); // Register cluster
2256 Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1);
2257 Double_t zcor = tseed.GetTilt() * (tseed.GetZProb() - tseed.GetZref(0));
2258 Float_t tquality = (18.0 - tseed.GetN2()) / 2.0
2259 + TMath::Abs(dangle) / 0.1
2260 + TMath::Abs(tseed.GetYfit(0) - (tseed.GetYref(0) - zcor)) / 0.2
2261 + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer];
2262 if (tquality<squality[bLayer]) {
2263 bseed[bLayer] = tseed;
2269 chi2 = AliTRDseed::FitRiemanTilt(bseed,kTRUE);
2276 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2277 if (TMath::Abs(cseed[iLayer].GetYref(0) / cseed[iLayer].GetX0()) < 0.15) {
2280 if (cseed[iLayer].IsOK()) {
2281 nclusters += cseed[iLayer].GetN2();
2289 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2290 if (cseed[iLayer].IsOK()) {
2291 rieman.AddPoint(xcl[iLayer]
2292 ,cseed[iLayer].GetYfitR(0)
2293 ,cseed[iLayer].GetZProb()
2302 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2303 if (cseed[iLayer].IsOK()) {
2304 cseed[iLayer].SetYref(0,rieman.GetYat(xcl[iLayer]));
2305 chi2RF += (cseed[iLayer].GetYref(0) - cseed[iLayer].GetYfitR(0))
2306 * (cseed[iLayer].GetYref(0) - cseed[iLayer].GetYfitR(0));
2307 cseed[iLayer].SetYref(1,rieman.GetDYat(xcl[iLayer]));
2308 cseed[iLayer].SetZref(0,rieman.GetZat(xcl[iLayer]));
2309 chi2ZF += (cseed[iLayer].GetZref(0) - cseed[iLayer].GetMeanz())
2310 * (cseed[iLayer].GetZref(0) - cseed[iLayer].GetMeanz());
2311 cseed[iLayer].SetZref(1,rieman.GetDZat(xcl[iLayer]));
2314 chi2RF /= TMath::Max((nlayers - 3.0),1.0);
2315 chi2ZF /= TMath::Max((nlayers - 3.0),1.0);
2316 curv = rieman.GetC();
2318 Double_t xref2 = (xcl[2] + xcl[3]) * 0.5; // Middle of the chamber
2319 Double_t dzmf = rieman.GetDZat(xref2);
2320 Double_t zmf = rieman.GetZat(xref2);
2326 fitterTC.ClearPoints();
2327 fitterT2.ClearPoints();
2330 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2332 if (!cseed[iLayer].IsOK()) {
2336 for (Int_t itime = 0; itime < 25; itime++) {
2338 if (!cseed[iLayer].IsUsable(itime)) {
2341 // X relative to the middle chamber
2342 Double_t x = cseed[iLayer].GetX(itime) + cseed[iLayer].GetX0() - xref2;
2343 Double_t y = cseed[iLayer].GetY(itime);
2344 Double_t z = cseed[iLayer].GetZ(itime);
2345 // ExB correction to the correction
2349 Double_t x2 = cseed[iLayer].GetX(itime) + cseed[iLayer].GetX0();
2350 Double_t t = 1.0 / (x2*x2 + y*y);
2352 uvt[0] = 2.0 * x2 * uvt[1]; // u
2353 uvt[2] = 2.0 * hL[iLayer] * uvt[1];
2354 uvt[3] = 2.0 * hL[iLayer] * x * uvt[1];
2355 uvt[4] = 2.0 * (y + hL[iLayer]*z) * uvt[1];
2356 Double_t error = 2.0 * 0.2 * uvt[1];
2357 fitterT2.AddPoint(uvt,uvt[4],error);
2360 // Constrained rieman
2362 z = cseed[iLayer].GetZ(itime);
2363 uvt[0] = 2.0 * x2 * t; // u
2364 uvt[1] = 2.0 * hL[iLayer] * x2 * uvt[1];
2365 uvt[2] = 2.0 * (y + hL[iLayer] * (z - GetZ())) * t;
2366 fitterTC.AddPoint(uvt,uvt[2],error);
2367 rieman2.AddPoint(x2,y,z,1,10);
2377 Double_t rpolz0 = fitterT2.GetParameter(3);
2378 Double_t rpolz1 = fitterT2.GetParameter(4);
2381 // Linear fitter - not possible to make boundaries
2382 // Do not accept non possible z and dzdx combinations
2384 Bool_t acceptablez = kTRUE;
2385 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2386 if (cseed[iLayer].IsOK()) {
2387 Double_t zT2 = rpolz0 + rpolz1 * (xcl[iLayer] - xref2);
2388 if (TMath::Abs(cseed[iLayer].GetZProb() - zT2) > padlength[iLayer] * 0.5 + 1.0) {
2389 acceptablez = kFALSE;
2394 fitterT2.FixParameter(3,zmf);
2395 fitterT2.FixParameter(4,dzmf);
2397 fitterT2.ReleaseParameter(3);
2398 fitterT2.ReleaseParameter(4);
2399 rpolz0 = fitterT2.GetParameter(3);
2400 rpolz1 = fitterT2.GetParameter(4);
2403 Double_t chi2TR = fitterT2.GetChisquare() / Float_t(npointsT);
2404 Double_t chi2TC = fitterTC.GetChisquare() / Float_t(npointsT);
2405 Double_t polz1c = fitterTC.GetParameter(2);
2406 Double_t polz0c = polz1c * xref2;
2407 Double_t aC = fitterTC.GetParameter(0);
2408 Double_t bC = fitterTC.GetParameter(1);
2409 Double_t cC = aC / TMath::Sqrt(bC * bC + 1.0); // Curvature
2410 Double_t aR = fitterT2.GetParameter(0);
2411 Double_t bR = fitterT2.GetParameter(1);
2412 Double_t dR = fitterT2.GetParameter(2);
2413 Double_t cR = 1.0 + bR*bR - dR*aR;
2416 dca = -dR / (TMath::Sqrt(1.0 + bR*bR - dR*aR) + TMath::Sqrt(1.0 + bR*bR));
2417 cR = aR / TMath::Sqrt(cR);
2420 Double_t chi2ZT2 = 0.0;
2421 Double_t chi2ZTC = 0.0;
2422 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2423 if (cseed[iLayer].IsOK()) {
2424 Double_t zT2 = rpolz0 + rpolz1 * (xcl[iLayer] - xref2);
2425 Double_t zTC = polz0c + polz1c * (xcl[iLayer] - xref2);
2426 chi2ZT2 += TMath::Abs(cseed[iLayer].GetMeanz() - zT2);
2427 chi2ZTC += TMath::Abs(cseed[iLayer].GetMeanz() - zTC);
2430 chi2ZT2 /= TMath::Max((nlayers - 3.0),1.0);
2431 chi2ZTC /= TMath::Max((nlayers - 3.0),1.0);
2433 AliTRDseed::FitRiemanTilt(cseed,kTRUE);
2434 Float_t sumdaf = 0.0;
2435 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2436 if (cseed[iLayer].IsOK()) {
2437 sumdaf += TMath::Abs((cseed[iLayer].GetYfit(1) - cseed[iLayer].GetYref(1))
2438 / cseed[iLayer].GetSigmaY2());
2441 sumdaf /= Float_t (nlayers - 2.0);
2444 // Likelihoods for full track
2446 Double_t likezf = TMath::Exp(-chi2ZF * 0.14);
2447 Double_t likechi2C = TMath::Exp(-chi2TC * 0.677);
2448 Double_t likechi2TR = TMath::Exp(-chi2TR * 0.78);
2449 Double_t likeaf = TMath::Exp(-sumdaf * 3.23);
2450 seedquality2[registered] = likezf * likechi2TR * likeaf;
2452 // Still needed ????
2453 // Bool_t isGold = kFALSE;
2455 // if (nlayers == 6 && TMath::Log(0.000000001+seedquality2[index])<-5.) isGold =kTRUE; // gold
2456 // if (nlayers == findable && TMath::Log(0.000000001+seedquality2[index])<-4.) isGold =kTRUE; // gold
2457 // if (isGold &&nusedf<10){
2458 // for (Int_t jLayer=0;jLayer<6;jLayer++){
2459 // if ( seed[index][jLayer].IsOK()&&TMath::Abs(seed[index][jLayer].fYfit[1]-seed[index][jLayer].fYfit[1])<0.1)
2460 // seed[index][jLayer].UseClusters(); //sign gold
2465 if (!cseed[0].IsOK()) {
2467 if (!cseed[1].IsOK()) {
2471 seedparams[registered][0] = cseed[index0].GetX0();
2472 seedparams[registered][1] = cseed[index0].GetYref(0);
2473 seedparams[registered][2] = cseed[index0].GetZref(0);
2474 seedparams[registered][5] = cR;
2475 seedparams[registered][3] = cseed[index0].GetX0() * cR - TMath::Sin(TMath::ATan(cseed[0].GetYref(1)));
2476 seedparams[registered][4] = cseed[index0].GetZref(1)
2477 / TMath::Sqrt(1.0 + cseed[index0].GetYref(1) * cseed[index0].GetYref(1));
2478 seedparams[registered][6] = ns;
2483 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2484 if (!cseed[iLayer].IsOK()) {
2487 if (cseed[iLayer].GetLabels(0) >= 0) {
2488 labels[nlab] = cseed[iLayer].GetLabels(0);
2491 if (cseed[iLayer].GetLabels(1) >= 0) {
2492 labels[nlab] = cseed[iLayer].GetLabels(1);
2496 Freq(nlab,labels,outlab,kFALSE);
2497 Int_t label = outlab[0];
2498 Int_t frequency = outlab[1];
2499 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2500 cseed[iLayer].SetFreq(frequency);
2501 cseed[iLayer].SetC(cR);
2502 cseed[iLayer].SetCC(cC);
2503 cseed[iLayer].SetChi2(chi2TR);
2504 cseed[iLayer].SetChi2Z(chi2ZF);
2508 if (1 || (!isFake)) {
2509 Float_t zvertex = GetZ();
2510 TTreeSRedirector &cstream = *fDebugStreamer;
2511 if (AliTRDReconstructor::StreamLevel() > 0) {
2513 << "isFake=" << isFake
2514 << "Vertex=" << zvertex
2515 << "Rieman2.=" << &rieman2
2516 << "Rieman.=" << &rieman
2524 << "Chi2R=" << chi2R
2525 << "Chi2Z=" << chi2Z
2526 << "Chi2RF=" << chi2RF // Chi2 of trackletes on full track
2527 << "Chi2ZF=" << chi2ZF // Chi2 z on tracklets on full track
2528 << "Chi2ZT2=" << chi2ZT2 // Chi2 z on tracklets on full track - rieman tilt
2529 << "Chi2ZTC=" << chi2ZTC // Chi2 z on tracklets on full track - rieman tilt const
2530 << "Chi2TR=" << chi2TR // Chi2 without vertex constrain
2531 << "Chi2TC=" << chi2TC // Chi2 with vertex constrain
2532 << "C=" << curv // Non constrained - no tilt correction
2533 << "DR=" << dR // DR parameter - tilt correction
2534 << "DCA=" << dca // DCA - tilt correction
2535 << "CR=" << cR // Non constrained curvature - tilt correction
2536 << "CC=" << cC // Constrained curvature
2537 << "Polz0=" << polz0c
2538 << "Polz1=" << polz1c
2539 << "RPolz0=" << rpolz0
2540 << "RPolz1=" << rpolz1
2541 << "Ncl=" << nclusters
2542 << "Nlayers=" << nlayers
2543 << "NUsedS=" << nusedCl
2544 << "NUsed=" << nusedf
2545 << "Findable=" << findable
2547 << "LikePrim=" << likePrim
2548 << "Likechi2C=" << likechi2C
2549 << "Likechi2TR=" << likechi2TR
2550 << "Likezf=" << likezf
2551 << "LikeF=" << seedquality2[registered]
2552 << "S0.=" << &cseed[0]
2553 << "S1.=" << &cseed[1]
2554 << "S2.=" << &cseed[2]
2555 << "S3.=" << &cseed[3]
2556 << "S4.=" << &cseed[4]
2557 << "S5.=" << &cseed[5]
2558 << "SB0.=" << &seedb[0]
2559 << "SB1.=" << &seedb[1]
2560 << "SB2.=" << &seedb[2]
2561 << "SB3.=" << &seedb[3]
2562 << "SB4.=" << &seedb[4]
2563 << "SB5.=" << &seedb[5]
2564 << "Label=" << label
2565 << "Freq=" << frequency
2566 << "sLayer=" << sLayer
2571 if (registered<kMaxSeed - 1) {
2573 cseed = seed[registered];
2576 } // End of loop over layer 1
2578 } // End of loop over layer 0
2580 } // End of loop over layer 3
2582 } // End of loop over seeding time bins
2584 AliDebug(2, Form("N registered = %d", registered));
2590 TMath::Sort(registered,seedquality2,sort,kTRUE);
2591 Bool_t signedseed[kMaxSeed];
2592 for (Int_t i = 0; i < registered; i++) {
2593 signedseed[i] = kFALSE;
2596 for (Int_t iter = 0; iter < 5; iter++) {
2598 for (Int_t iseed = 0; iseed < registered; iseed++) {
2600 Int_t index = sort[iseed];
2601 if (signedseed[index]) {
2604 Int_t labelsall[1000];
2605 Int_t nlabelsall = 0;
2606 Int_t naccepted = 0;;
2607 Int_t sLayer = seedlayer[index];
2613 for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
2615 if (TMath::Abs(seed[index][jLayer].GetYref(0) / xcl[jLayer]) < 0.15) {
2618 if (seed[index][jLayer].IsOK()) {
2619 seed[index][jLayer].UpdateUsed();
2620 ncl +=seed[index][jLayer].GetN2();
2621 nused +=seed[index][jLayer].GetNUsed();
2624 for (Int_t itime = 0; itime < 25; itime++) {
2625 if (seed[index][jLayer].IsUsable(itime)) {
2627 for (Int_t ilab = 0; ilab < 3; ilab++) {
2628 Int_t tindex = seed[index][jLayer].GetClusters(itime)->GetLabel(ilab);
2630 labelsall[nlabelsall] = tindex;
2648 if (TMath::Log(0.000000001+seedquality2[index]) < -5.0) {
2654 if (nlayers < findable) {
2657 if (TMath::Log(0.000000001+seedquality2[index]) < -4.0) {
2663 if ((nlayers == findable) ||
2667 if (TMath::Log(0.000000001+seedquality2[index]) < -6.0) {
2673 if (TMath::Log(0.000000001+seedquality2[index]) < -5.0) {
2679 if (TMath::Log(0.000000001+seedquality2[index]) - nused/(nlayers-3.0) < -15.0) {
2684 signedseed[index] = kTRUE;
2689 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2690 if (seed[index][iLayer].IsOK()) {
2691 if (seed[index][iLayer].GetLabels(0) >= 0) {
2692 labels[nlab] = seed[index][iLayer].GetLabels(0);
2695 if (seed[index][iLayer].GetLabels(1) >= 0) {
2696 labels[nlab] = seed[index][iLayer].GetLabels(1);
2701 Freq(nlab,labels,outlab,kFALSE);
2702 Int_t label = outlab[0];
2703 Int_t frequency = outlab[1];
2704 Freq(nlabelsall,labelsall,outlab,kFALSE);
2705 Int_t label1 = outlab[0];
2706 Int_t label2 = outlab[2];
2707 Float_t fakeratio = (naccepted - outlab[1]) / Float_t(naccepted);
2708 Float_t ratio = Float_t(nused) / Float_t(ncl);
2710 for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
2711 if ((seed[index][jLayer].IsOK()) &&
2712 (TMath::Abs(seed[index][jLayer].GetYfit(1) - seed[index][jLayer].GetYfit(1)) < 0.2)) {
2713 seed[index][jLayer].UseClusters(); // Sign gold
2718 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.
2719 TTreeSRedirector &cstream = *fDebugStreamer;
2721 AliDebug(2, Form("Register seed %d", index));
2726 AliTRDtrack *track = RegisterSeed(seed[index],seedparams[index]);
2729 AliWarning(Form("register seed returned 0%x", track));
2733 AliESDtrack esdtrack;
2734 esdtrack.UpdateTrackParams(track,AliESDtrack::kTRDout);
2735 esdtrack.SetLabel(label);
2736 esd->AddTrack(&esdtrack);
2737 TTreeSRedirector &cstream = *fDebugStreamer;
2738 if (AliTRDReconstructor::StreamLevel() > 0) {
2740 << "EventNrInFile=" << eventNrInFile
2741 << "ESD.=" << &esdtrack
2743 << "trdback.=" << track
2748 if (AliTRDReconstructor::StreamLevel() > 0) {
2751 << "Track.=" << track
2752 << "Like=" << seedquality[index]
2753 << "LikeF=" << seedquality2[index]
2754 << "S0.=" << &seed[index][0]
2755 << "S1.=" << &seed[index][1]
2756 << "S2.=" << &seed[index][2]
2757 << "S3.=" << &seed[index][3]
2758 << "S4.=" << &seed[index][4]
2759 << "S5.=" << &seed[index][5]
2760 << "Label=" << label
2761 << "Label1=" << label1
2762 << "Label2=" << label2
2763 << "FakeRatio=" << fakeratio
2764 << "Freq=" << frequency
2766 << "Nlayers=" << nlayers
2767 << "Findable=" << findable
2768 << "NUsed=" << nused
2769 << "sLayer=" << sLayer
2770 << "EventNrInFile=" << eventNrInFile
2778 } // End of loop over sectors
2784 //_____________________________________________________________________________
2785 Int_t AliTRDtrackerHLT::ReadClusters(TObjArray *array, TTree *clusterTree) const
2788 // Reads AliTRDclusters (option >= 0) or AliTRDrecPoints (option < 0)
2789 // from the file. The names of the cluster tree and branches
2790 // should match the ones used in AliTRDclusterizer::WriteClusters()
2793 Int_t nsize = Int_t(clusterTree->GetTotBytes() / (sizeof(AliTRDcluster)));
2794 TObjArray *clusterArray = new TObjArray(nsize+1000);
2796 TBranch *branch = clusterTree->GetBranch("TRDcluster");
2798 AliError("Can't get the branch !");
2801 branch->SetAddress(&clusterArray);
2803 // Loop through all entries in the tree
2804 Int_t nEntries = (Int_t) clusterTree->GetEntries();
2806 AliTRDcluster *c = 0;
2807 for (Int_t iEntry = 0; iEntry < nEntries; iEntry++) {
2810 nbytes += clusterTree->GetEvent(iEntry);
2812 // Get the number of points in the detector
2813 Int_t nCluster = clusterArray->GetEntriesFast();
2815 // Loop through all TRD digits
2816 for (Int_t iCluster = 0; iCluster < nCluster; iCluster++) {
2817 c = (AliTRDcluster *) clusterArray->UncheckedAt(iCluster);
2818 AliTRDcluster *co = c;
2820 clusterArray->RemoveAt(iCluster);
2825 delete clusterArray;
2831 //_____________________________________________________________________________
2832 Bool_t AliTRDtrackerHLT::GetTrackPoint(Int_t index, AliTrackPoint &p) const
2835 // Get track space point with index i
2836 // Origin: C.Cheshkov
2839 AliTRDcluster *cl = (AliTRDcluster *) fClusters->UncheckedAt(index);
2840 Int_t idet = cl->GetDetector();
2841 Int_t isector = fGeom->GetSector(idet);
2842 Int_t ichamber = fGeom->GetChamber(idet);
2843 Int_t iplan = fGeom->GetPlane(idet);
2845 local[0] = GetX(isector,iplan,cl->GetLocalTimeBin());
2846 local[1] = cl->GetY();
2847 local[2] = cl->GetZ();
2849 fGeom->RotateBack(idet,local,global);
2850 p.SetXYZ(global[0],global[1],global[2]);
2851 #ifdef HAVNT_ALIGEOMMANAGER
2852 // this was introcuced for backward compatibility with AliRoot v4-05-Release
2853 AliAlignObj::ELayerID iLayer = AliAlignObj::kTRD1;
2856 iLayer = AliAlignObj::kTRD1;
2859 iLayer = AliAlignObj::kTRD2;
2862 iLayer = AliAlignObj::kTRD3;
2865 iLayer = AliAlignObj::kTRD4;
2868 iLayer = AliAlignObj::kTRD5;
2871 iLayer = AliAlignObj::kTRD6;
2874 Int_t modId = isector * fGeom->Ncham() + ichamber;
2875 UShort_t volid = AliAlignObj::LayerToVolUID(iLayer,modId);
2876 #else //HAVNT_ALIGEOMMANAGER
2877 AliGeomManager::ELayerID iLayer = AliGeomManager::kTRD1;
2880 iLayer = AliGeomManager::kTRD1;
2883 iLayer = AliGeomManager::kTRD2;
2886 iLayer = AliGeomManager::kTRD3;
2889 iLayer = AliGeomManager::kTRD4;
2892 iLayer = AliGeomManager::kTRD5;
2895 iLayer = AliGeomManager::kTRD6;
2898 Int_t modId = isector * fGeom->Ncham() + ichamber;
2899 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,modId);
2900 #endif //HAVNT_ALIGEOMMANAGER
2901 p.SetVolumeID(volid);
2907 //_____________________________________________________________________________
2908 void AliTRDtrackerHLT::CookLabel(AliKalmanTrack *pt, Float_t wrong) const
2911 // This cooks a label. Mmmmh, smells good...
2914 Int_t label = 123456789;
2918 Int_t ncl = pt->GetNumberOfClusters();
2920 const Int_t kRange = fTrSec[0]->GetOuterTimeBin() + 1;
2924 Int_t **s = new Int_t* [kRange];
2925 for (i = 0; i < kRange; i++) {
2926 s[i] = new Int_t[2];
2928 for (i = 0; i < kRange; i++) {
2937 for (i = 0; i < ncl; i++) {
2938 index = pt->GetClusterIndex(i);
2939 AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index);
2945 for (i = 0; i < ncl; i++) {
2946 index = pt->GetClusterIndex(i);
2947 AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index);
2948 for (Int_t k = 0; k < 3; k++) {
2949 label = c->GetLabel(k);
2950 labelAdded = kFALSE;
2953 while ((!labelAdded) && (j < kRange)) {
2954 if ((s[j][0] == label) ||
2957 s[j][1] = s[j][1] + 1;
2969 for (i = 0; i < kRange; i++) {
2970 if (s[i][1] > max) {
2976 for (i = 0; i < kRange; i++) {
2982 if ((1.0 - Float_t(max)/ncl) > wrong) {
2986 pt->SetLabel(label);
2990 //_____________________________________________________________________________
2991 void AliTRDtrackerHLT::UseClusters(const AliKalmanTrack *t, Int_t from) const
2994 // Use clusters, but don't abuse them!
2997 const Float_t kmaxchi2 = 18;
2998 const Float_t kmincl = 10;
3000 AliTRDtrack *track = (AliTRDtrack *) t;
3002 Int_t ncl = t->GetNumberOfClusters();
3003 for (Int_t i = from; i < ncl; i++) {
3004 Int_t index = t->GetClusterIndex(i);
3005 AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index);
3006 Int_t iplane = fGeom->GetPlane(c->GetDetector());
3007 if (track->GetTracklets(iplane).GetChi2() > kmaxchi2) {
3010 if (track->GetTracklets(iplane).GetN() < kmincl) {
3013 if (!(c->IsUsed())) {
3020 //_____________________________________________________________________________
3021 Double_t AliTRDtrackerHLT::ExpectedSigmaY2(Double_t , Double_t , Double_t ) const
3024 // Parametrised "expected" error of the cluster reconstruction in Y
3027 Double_t s = 0.08 * 0.08;
3032 //_____________________________________________________________________________
3033 Double_t AliTRDtrackerHLT::ExpectedSigmaZ2(Double_t , Double_t ) const
3036 // Parametrised "expected" error of the cluster reconstruction in Z
3039 Double_t s = 9.0 * 9.0 / 12.0;
3044 //_____________________________________________________________________________
3045 Double_t AliTRDtrackerHLT::GetX(Int_t sector, Int_t plane, Int_t localTB) const
3048 // Returns radial position which corresponds to time bin <localTB>
3049 // in tracking sector <sector> and plane <plane>
3052 Int_t index = fTrSec[sector]->CookTimeBinIndex(plane, localTB);
3053 Int_t pl = fTrSec[sector]->GetLayerNumber(index);
3055 return fTrSec[sector]->GetLayer(pl)->GetX();
3059 //_____________________________________________________________________________
3060 AliTRDpropagationLayerHLT
3061 ::AliTRDpropagationLayerHLT(Double_t x, Double_t dx, Double_t rho
3062 , Double_t radLength, Int_t tbIndex, Int_t plane)
3071 ,fTimeBinIndex(tbIndex)
3084 // AliTRDpropagationLayerHLT constructor
3087 for (Int_t i = 0; i < (Int_t) AliTRDtrackingHLT::kZones; i++) {
3092 if (fTimeBinIndex >= 0) {
3093 fClusters = new AliTRDcluster*[AliTRDtrackingHLT::kMaxClusterPerTimeBin];
3094 fIndex = new UInt_t[AliTRDtrackingHLT::kMaxClusterPerTimeBin];
3097 for (Int_t i = 0; i < 5; i++) {
3098 fIsHole[i] = kFALSE;
3103 //_____________________________________________________________________________
3104 void AliTRDpropagationLayerHLT
3105 ::SetHole(Double_t Zmax, Double_t Ymax, Double_t rho
3106 , Double_t radLength, Double_t Yc, Double_t Zc)
3109 // Sets hole in the layer
3118 fHoleX0 = radLength;
3122 //_____________________________________________________________________________
3123 AliTRDtrackingSectorHLT
3124 ::AliTRDtrackingSectorHLT(AliTRDgeometry *geo, Int_t gs)
3130 // AliTRDtrackingSectorHLT Constructor
3133 AliTRDpadPlane *padPlane = 0;
3134 AliTRDpropagationLayerHLT *ppl = 0;
3136 // Get holes description from geometry
3137 Bool_t holes[AliTRDgeometry::kNcham];
3138 for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) {
3139 holes[icham] = fGeom->IsHole(0,icham,gs);
3142 for (UInt_t i = 0; i < AliTRDtrackingHLT::kMaxTimeBinIndex; i++) {
3143 fTimeBinIndex[i] = -1;
3151 // Add layers for each of the planes
3152 Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region
3153 //Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region
3155 const Int_t kNchambers = AliTRDgeometry::Ncham();
3158 Double_t ymaxsensitive = 0;
3159 Double_t *zc = new Double_t[kNchambers];
3160 Double_t *zmax = new Double_t[kNchambers];
3161 Double_t *zmaxsensitive = new Double_t[kNchambers];
3163 AliTRDCommonParam *commonParam = AliTRDCommonParam::Instance();
3165 AliErrorGeneral("AliTRDtrackingSectorHLT::Ctor"
3166 ,"Could not get common parameters\n");
3170 for (Int_t plane = 0; plane < AliTRDgeometry::Nplan(); plane++) {
3172 ymax = fGeom->GetChamberWidth(plane) / 2.0;
3173 padPlane = fGeom->GetPadPlane(plane,0);
3174 ymaxsensitive = (padPlane->GetColSize(1) * padPlane->GetNcols() - 4.0) / 2.0;
3176 for (Int_t ch = 0; ch < kNchambers; ch++) {
3177 zmax[ch] = fGeom->GetChamberLength(plane,ch) / 2.0;
3178 Float_t pad = padPlane->GetRowSize(1);
3179 Float_t row0 = fGeom->GetRow0(plane,ch,0);
3180 Int_t nPads = fGeom->GetRowMax(plane,ch,0);
3181 zmaxsensitive[ch] = Float_t(nPads) * pad / 2.0;
3182 zc[ch] = -(pad * nPads) / 2.0 + row0;
3185 dx = AliTRDcalibDB::Instance()->GetVdrift(0,0,0)
3186 / commonParam->GetSamplingFrequency();
3187 rho = 0.00295 * 0.85; //????
3190 Double_t x0 = (Double_t) AliTRDgeometry::GetTime0(plane);
3191 //Double_t xbottom = x0 - dxDrift;
3192 //Double_t xtop = x0 + dxAmp;
3194 Int_t nTimeBins = AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
3195 for (Int_t iTime = 0; iTime < nTimeBins; iTime++) {
3197 Double_t xlayer = iTime * dx - dxAmp;
3198 //if (xlayer<0) xlayer = dxAmp / 2.0;
3201 tbIndex = CookTimeBinIndex(plane,iTime);
3202 ppl = new AliTRDpropagationLayerHLT(x,dx,rho,radLength,tbIndex,plane);
3203 ppl->SetYmax(ymax,ymaxsensitive);
3204 ppl->SetZ(zc,zmax,zmaxsensitive);
3205 ppl->SetHoles(holes);
3216 delete [] zmaxsensitive;
3220 //_____________________________________________________________________________
3221 AliTRDtrackingSectorHLT
3222 ::AliTRDtrackingSectorHLT(const AliTRDtrackingSectorHLT &/*t*/)
3233 //_____________________________________________________________________________
3234 Int_t AliTRDtrackingSectorHLT
3235 ::CookTimeBinIndex(Int_t plane, Int_t localTB) const
3238 // depending on the digitization parameters calculates "global"
3239 // time bin index for timebin <localTB> in plane <plane>
3243 Int_t tbPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
3244 Int_t gtb = (plane+1) * tbPerPlane - localTB - 1;
3256 //_____________________________________________________________________________
3257 void AliTRDtrackingSectorHLT
3258 ::MapTimeBinLayers()
3261 // For all sensitive time bins sets corresponding layer index
3262 // in the array fTimeBins
3267 for (Int_t i = 0; i < fN; i++) {
3269 index = fLayers[i]->GetTimeBinIndex();
3274 if (index >= (Int_t) AliTRDtrackingHLT::kMaxTimeBinIndex) {
3275 //AliWarning(Form("Index %d exceeds allowed maximum of %d!\n"
3276 // ,index,AliTRDtrackingHLT::kMaxTimeBinIndex-1));
3280 fTimeBinIndex[index] = i;
3286 //_____________________________________________________________________________
3287 Int_t AliTRDtrackingSectorHLT
3288 ::GetLayerNumber(Double_t x) const
3291 // Returns the number of time bin which in radial position is closest to <x>
3294 if (x >= fLayers[fN-1]->GetX()) {
3297 if (x <= fLayers[ 0]->GetX()) {
3303 Int_t m = (b + e) / 2;
3305 for ( ; b < e; m = (b + e) / 2) {
3306 if (x > fLayers[m]->GetX()) {
3314 if (TMath::Abs(x - fLayers[m]->GetX()) > TMath::Abs(x - fLayers[m+1]->GetX())) {
3323 //_____________________________________________________________________________
3324 Int_t AliTRDtrackingSectorHLT
3325 ::GetInnerTimeBin() const
3328 // Returns number of the innermost SENSITIVE propagation layer
3331 return GetLayerNumber(0);
3335 //_____________________________________________________________________________
3336 Int_t AliTRDtrackingSectorHLT
3337 ::GetOuterTimeBin() const
3340 // Returns number of the outermost SENSITIVE time bin
3343 return GetLayerNumber(GetNumberOfTimeBins() - 1);
3347 //_____________________________________________________________________________
3348 Int_t AliTRDtrackingSectorHLT
3349 ::GetNumberOfTimeBins() const
3352 // Returns number of SENSITIVE time bins
3358 for (tb = AliTRDtrackingHLT::kMaxTimeBinIndex - 1; tb >= 0; tb--) {
3359 layer = GetLayerNumber(tb);
3369 //_____________________________________________________________________________
3370 void AliTRDtrackingSectorHLT
3371 ::InsertLayer(AliTRDpropagationLayerHLT *pl)
3374 // Insert layer <pl> in fLayers array.
3375 // Layers are sorted according to X coordinate.
3378 if (fN == ((Int_t) AliTRDtrackingHLT::kMaxLayersPerSector)) {
3379 //AliWarning("Too many layers !\n");
3388 Int_t i = Find(pl->GetX());
3390 memmove(fLayers+i+1,fLayers+i,(fN-i)*sizeof(AliTRDpropagationLayerHLT*));
3397 //_____________________________________________________________________________
3398 Int_t AliTRDtrackingSectorHLT
3399 ::Find(Double_t x) const
3402 // Returns index of the propagation layer nearest to X
3405 if (x <= fLayers[0]->GetX()) {
3409 if (x > fLayers[fN-1]->GetX()) {
3415 Int_t m = (b + e) / 2;
3417 for (; b < e; m = (b + e) / 2) {
3418 if (x > fLayers[m]->GetX()) {
3430 //_____________________________________________________________________________
3431 void AliTRDpropagationLayerHLT
3432 ::SetZ(Double_t *center, Double_t *w, Double_t *wsensitive )
3435 // set centers and the width of sectors
3438 for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) {
3439 fZc[icham] = center[icham];
3440 fZmax[icham] = w[icham];
3441 fZmaxSensitive[icham] = wsensitive[icham];
3446 //_____________________________________________________________________________
3447 void AliTRDpropagationLayerHLT::SetHoles(Bool_t *holes)
3450 // set centers and the width of sectors
3455 for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) {
3456 fIsHole[icham] = holes[icham];
3464 //_____________________________________________________________________________
3465 void AliTRDpropagationLayerHLT
3466 ::InsertCluster(AliTRDcluster *c, UInt_t index)
3469 // Insert cluster in cluster array.
3470 // Clusters are sorted according to Y coordinate.
3473 if (fTimeBinIndex < 0) {
3474 //AliWarning("Attempt to insert cluster into non-sensitive time bin!\n");
3478 if (fN == (Int_t) AliTRDtrackingHLT::kMaxClusterPerTimeBin) {
3479 //AliWarning("Too many clusters !\n");
3485 fClusters[fN++] = c;
3489 Int_t i = Find(c->GetY());
3490 memmove(fClusters+i+1,fClusters+i,(fN-i)*sizeof(AliTRDcluster*));
3491 memmove(fIndex +i+1,fIndex +i,(fN-i)*sizeof(UInt_t));
3498 //_____________________________________________________________________________
3499 Int_t AliTRDpropagationLayerHLT::Find(Float_t y) const
3502 // Returns index of the cluster nearest in Y
3508 if (y <= fClusters[0]->GetY()) {
3511 if (y > fClusters[fN-1]->GetY()) {
3517 Int_t m = (b + e) / 2;
3519 for ( ; b < e; m = (b + e) / 2) {
3520 if (y > fClusters[m]->GetY()) {
3532 //_____________________________________________________________________________
3533 Int_t AliTRDpropagationLayerHLT
3534 ::FindNearestCluster(Float_t y, Float_t z, Float_t maxroad
3535 , Float_t maxroadz) const
3538 // Returns index of the cluster nearest to the given y,z
3543 Float_t mindist = maxroad;
3545 for (Int_t i = Find(y-maxroad); i < maxn; i++) {
3546 AliTRDcluster *c = (AliTRDcluster *) (fClusters[i]);
3547 Float_t ycl = c->GetY();
3548 if (ycl > (y + maxroad)) {
3551 if (TMath::Abs(c->GetZ() - z) > maxroadz) {
3554 if (TMath::Abs(ycl - y) < mindist) {
3555 mindist = TMath::Abs(ycl - y);
3564 //_____________________________________________________________________________
3565 Double_t AliTRDtrackerHLT::GetTiltFactor(const AliTRDcluster *c)
3568 // Returns correction factor for tilted pads geometry
3571 Int_t det = c->GetDetector();
3572 Int_t plane = fGeom->GetPlane(det);
3573 AliTRDpadPlane *padPlane = fGeom->GetPadPlane(plane,0);
3574 Double_t h01 = TMath::Tan(-TMath::Pi() / 180.0 * padPlane->GetTiltingAngle());
3584 //_____________________________________________________________________________
3585 void AliTRDtrackerHLT::CookdEdxTimBin(AliTRDtrack &TRDtrack)
3588 // This is setting fdEdxPlane and fTimBinPlane
3589 // Sums up the charge in each plane for track TRDtrack and also get the
3590 // Time bin for Max. Cluster
3591 // Prashant Shukla (shukla@physi.uni-heidelberg.de)
3594 Double_t clscharge[AliESDtrack::kNPlane][AliESDtrack::kNSlice];
3595 Double_t maxclscharge[AliESDtrack::kNPlane];
3596 Int_t nCluster[AliESDtrack::kNPlane][AliESDtrack::kNSlice];
3597 Int_t timebin[AliESDtrack::kNPlane];
3599 // Initialization of cluster charge per plane.
3600 for (Int_t iPlane = 0; iPlane < AliESDtrack::kNPlane; iPlane++) {
3601 for (Int_t iSlice = 0; iSlice < AliESDtrack::kNSlice; iSlice++) {
3602 clscharge[iPlane][iSlice] = 0.0;
3603 nCluster[iPlane][iSlice] = 0;
3607 // Initialization of cluster charge per plane.
3608 for (Int_t iPlane = 0; iPlane < AliESDtrack::kNPlane; iPlane++) {
3609 timebin[iPlane] = -1;
3610 maxclscharge[iPlane] = 0.0;
3613 // Loop through all clusters associated to track TRDtrack
3614 Int_t nClus = TRDtrack.GetNumberOfClusters(); // from Kalmantrack
3615 for (Int_t iClus = 0; iClus < nClus; iClus++) {
3616 Double_t charge = TRDtrack.GetClusterdQdl(iClus);
3617 Int_t index = TRDtrack.GetClusterIndex(iClus);
3618 AliTRDcluster *pTRDcluster = (AliTRDcluster *) GetCluster(index);
3622 Int_t tb = pTRDcluster->GetLocalTimeBin();
3626 Int_t detector = pTRDcluster->GetDetector();
3627 Int_t iPlane = fGeom->GetPlane(detector);
3628 if (iPlane >= AliESDtrack::kNPlane) {
3629 AliError(Form("Wrong plane %d",iPlane));
3632 Int_t iSlice = tb * AliESDtrack::kNSlice
3633 / AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
3634 if (iSlice >= AliESDtrack::kNSlice) {
3635 AliError(Form("Wrong slice %d",iSlice));
3638 clscharge[iPlane][iSlice] = clscharge[iPlane][iSlice] + charge;
3639 if (charge > maxclscharge[iPlane]) {
3640 maxclscharge[iPlane] = charge;
3641 timebin[iPlane] = tb;
3643 nCluster[iPlane][iSlice]++;
3644 } // End of loop over cluster
3646 // Setting the fdEdxPlane and fTimBinPlane variabales
3647 Double_t totalCharge = 0.0;
3649 for (Int_t iPlane = 0; iPlane < AliESDtrack::kNPlane; iPlane++) {
3650 for (Int_t iSlice = 0; iSlice < AliESDtrack::kNSlice; iSlice++) {
3651 if (nCluster[iPlane][iSlice]) {
3652 clscharge[iPlane][iSlice] /= nCluster[iPlane][iSlice];
3654 TRDtrack.SetPIDsignals(clscharge[iPlane][iSlice],iPlane,iSlice);
3655 totalCharge = totalCharge+clscharge[iPlane][iSlice];
3657 TRDtrack.SetPIDTimBin(timebin[iPlane],iPlane);
3660 // Still needed ????
3662 // Int_t nc=TRDtrack.GetNumberOfClusters();
3664 // for (i=0; i<nc; i++) dedx += TRDtrack.GetClusterdQdl(i);
3666 // for (Int_t iPlane = 0; iPlane < kNPlane; iPlane++) {
3667 // TRDtrack.SetPIDsignals(dedx, iPlane);
3668 // TRDtrack.SetPIDTimBin(timbin[iPlane], iPlane);
3673 //_____________________________________________________________________________
3674 Int_t AliTRDtrackerHLT::FindClusters(Int_t sector, Int_t t0, Int_t t1
3675 , AliTRDtrack *track
3676 , Int_t *clusters, AliTRDtracklet &tracklet)
3680 // Try to find nearest clusters to the track in timebins from t0 to t1
3682 // Correction coeficients - depend on TRD parameters - to be changed accordingly
3688 Double_t xmean = 0.0; // Reference x
3689 Double_t dz[10][100];
3690 Double_t dy[10][100];
3694 Int_t indexes[10][100]; // Indexes of the clusters in the road
3695 Int_t best[10][100]; // Index of best matching cluster
3696 AliTRDcluster *cl[10][100]; // Pointers to the clusters in the road
3698 for (Int_t it = 0; it < 100; it++) {
3705 for (Int_t ih = 0; ih < 10;ih++) {
3706 indexes[ih][it] = -2; // Reset indexes1
3708 dz[ih][it] = -100.0;
3709 dy[ih][it] = -100.0;
3714 Double_t x0 = track->GetX();
3715 Double_t sigmaz = TMath::Sqrt(TMath::Abs(track->GetSigmaZ2()));
3720 Int_t detector = -1;
3721 Float_t padlength = 0.0;
3722 AliTRDtrack track2(* track);
3723 Float_t snpy = track->GetSnp();
3724 Float_t tany = TMath::Sqrt(snpy*snpy / (1.0 - snpy*snpy));
3729 Double_t sy2 = ExpectedSigmaY2(x0,track->GetTgl(),track->GetSignedPt());
3730 Double_t sz2 = ExpectedSigmaZ2(x0,track->GetTgl());
3731 Double_t road = 15.0 * TMath::Sqrt(track->GetSigmaY2() + sy2);
3737 for (Int_t it = 0; it < t1-t0; it++) {
3739 Double_t maxChi2[2] = { fgkMaxChi2, fgkMaxChi2 };
3740 AliTRDpropagationLayerHLT &timeBin = *(fTrSec[sector]->GetLayer(it+t0));
3742 continue; // No indexes1
3745 Int_t maxn = timeBin;
3746 x[it] = timeBin.GetX();
3747 track2.PropagateTo(x[it]);
3748 yt[it] = track2.GetY();
3749 zt[it] = track2.GetZ();
3751 Double_t y = yt[it];
3752 Double_t z = zt[it];
3753 Double_t chi2 = 1000000.0;
3757 // Find 2 nearest cluster at given time bin
3759 int checkPoint[4] = {0,0,0,0};
3760 double minY = 123456789;
3761 double minD[2] = {1,1};
3763 for (Int_t i = timeBin.Find(y - road); i < maxn; i++) {
3764 //for (Int_t i = 0; i < maxn; i++) {
3766 AliTRDcluster *c = (AliTRDcluster *) (timeBin[i]);
3767 h01 = GetTiltFactor(c);
3769 Int_t det = c->GetDetector();
3770 plane = fGeom->GetPlane(det);
3771 padlength = TMath::Sqrt(c->GetSigmaZ2() * 12.0);
3774 //if (c->GetLocalTimeBin()==0) continue;
3775 if (c->GetY() > (y + road)) {
3779 fHDeltaX->Fill(c->GetX() - x[it]);
3780 //printf("%f\t%f\t%f \n", c->GetX(), x[it], c->GetX()-x[it]);
3782 if (TMath::Abs(c->GetY()-y) < TMath::Abs(minY)) {
3784 minD[0] = c->GetY()-y;
3785 minD[1] = c->GetZ()-z;
3790 fHMinZ->Fill(c->GetZ() - z);
3791 if ((c->GetZ() - z) * (c->GetZ() - z) > 2 * (12.0 * sz2)) {
3796 Double_t dist = TMath::Abs(c->GetZ() - z);
3797 if (dist > (0.5 * padlength + 6.0 * sigmaz)) { // 0.5
3798 continue; // 6 sigma boundary cut
3802 Double_t cost = 0.0;
3803 // Sigma boundary cost function
3804 if (dist> (0.5 * padlength - sigmaz)){
3805 cost = (dist - 0.5*padlength) / (2.0 * sigmaz);
3807 cost = (cost + 1.0) * (cost + 1.0);
3813 //Int_t label = TMath::Abs(track->GetLabel());
3814 //if (c->GetLabel(0)!=label && c->GetLabel(1)!=label&&c->GetLabel(2)!=label) continue;
3815 chi2 = track2.GetPredictedChi2(c,h01) + cost;
3818 if (chi2 > maxChi2[1]) {
3823 detector = c->GetDetector();
3824 // Store the clusters in the road
3825 for (Int_t ih = 2; ih < 9; ih++) {
3826 if (cl[ih][it] == 0) {
3828 indexes[ih][it] = timeBin.GetIndex(i); // Index - 9 - reserved for outliers
3833 if (chi2 < maxChi2[0]) {
3834 maxChi2[1] = maxChi2[0];
3836 indexes[1][it] = indexes[0][it];
3837 cl[1][it] = cl[0][it];
3838 indexes[0][it] = timeBin.GetIndex(i);
3844 indexes[1][it] = timeBin.GetIndex(i);
3848 for(int iCheckPoint = 0; iCheckPoint<4; iCheckPoint++)
3849 fHFindCl[iCheckPoint]->Fill(checkPoint[iCheckPoint]);
3851 if (checkPoint[3]) {
3852 if (track->GetSignedPt() > 0) fHMinYPos->Fill(minY);
3853 else fHMinYNeg->Fill(minY);
3855 fHMinD->Fill(minD[0], minD[1]);
3868 xmean /= Float_t(nfound); // Middle x
3869 track2.PropagateTo(xmean); // Propagate track to the center
3872 // Choose one of the variants
3877 Double_t sumdy = 0.0;
3878 Double_t sumdy2 = 0.0;
3879 Double_t sumx = 0.0;
3880 Double_t sumxy = 0.0;
3881 Double_t sumx2 = 0.0;
3882 Double_t mpads = 0.0;
3888 Double_t moffset[10]; // Mean offset
3889 Double_t mean[10]; // Mean value
3890 Double_t angle[10]; // Angle
3892 Double_t smoffset[10]; // Sigma of mean offset
3893 Double_t smean[10]; // Sigma of mean value
3894 Double_t sangle[10]; // Sigma of angle
3895 Double_t smeanangle[10]; // Correlation
3897 Double_t sigmas[10];
3898 Double_t tchi2s[10]; // Chi2s for tracklet
3900 for (Int_t it = 0; it < 10; it++) {
3906 moffset[it] = 0.0; // Mean offset
3907 mean[it] = 0.0; // Mean value
3908 angle[it] = 0.0; // Angle
3910 smoffset[it] = 1.0e5; // Sigma of mean offset
3911 smean[it] = 1.0e5; // Sigma of mean value
3912 sangle[it] = 1.0e5; // Sigma of angle
3913 smeanangle[it] = 0.0; // Correlation
3916 tchi2s[it] = 1.0e5; // Chi2s for tracklet
3923 for (Int_t it = 0; it < t1 - t0; it++) {
3927 for (Int_t dt = -3; dt <= 3; dt++) {
3931 if (it+dt > t1-t0) {
3934 if (!cl[0][it+dt]) {
3937 zmean[it] += cl[0][it+dt]->GetZ();
3940 zmean[it] /= nmean[it];
3943 for (Int_t it = 0; it < t1 - t0; it++) {
3947 for (Int_t ih = 0; ih < 10; ih++) {
3948 dz[ih][it] = -100.0;
3949 dy[ih][it] = -100.0;
3953 Double_t xcluster = cl[ih][it]->GetX();
3956 track2.GetProlongation(xcluster,ytrack,ztrack );
3957 dz[ih][it] = cl[ih][it]->GetZ()- ztrack; // Calculate distance from track in z
3958 dy[ih][it] = cl[ih][it]->GetY() + dz[ih][it]*h01 - ytrack; // and in y
3965 if ((TMath::Abs(cl[0][it]->GetZ()-zmean[it]) > padlength * 0.8) &&
3967 if (TMath::Abs(cl[1][it]->GetZ()-zmean[it]) < padlength * 0.5) {
3975 // Iterative choice of "best path"
3977 Int_t label = TMath::Abs(track->GetLabel());
3980 for (Int_t iter = 0; iter < 9; iter++) {
3995 for (Int_t it = 0; it < t1 - t0; it++) {
3997 if (!cl[best[iter][it]][it]) {
4001 // Calculates pad-row changes
4002 Double_t zbefore = cl[best[iter][it]][it]->GetZ();
4003 Double_t zafter = cl[best[iter][it]][it]->GetZ();
4004 for (Int_t itd = it - 1; itd >= 0; itd--) {
4005 if (cl[best[iter][itd]][itd]) {
4006 zbefore = cl[best[iter][itd]][itd]->GetZ();
4010 for (Int_t itd = it + 1; itd < t1 - t0; itd++) {
4011 if (cl[best[iter][itd]][itd]) {
4012 zafter = cl[best[iter][itd]][itd]->GetZ();
4016 if ((TMath::Abs(cl[best[iter][it]][it]->GetZ()-zbefore) > 0.1) &&
4017 (TMath::Abs(cl[best[iter][it]][it]->GetZ()- zafter) > 0.1)) {
4021 Double_t dx = x[it]-xmean; // Distance to reference x
4022 sumz += cl[best[iter][it]][it]->GetZ();
4024 sumdy += dy[best[iter][it]][it];
4025 sumdy2 += dy[best[iter][it]][it]*dy[best[iter][it]][it];
4028 sumxy += dx*dy[best[iter][it]][it];
4029 mpads += cl[best[iter][it]][it]->GetNPads();
4030 if ((cl[best[iter][it]][it]->GetLabel(0) == label) ||
4031 (cl[best[iter][it]][it]->GetLabel(1) == label) ||
4032 (cl[best[iter][it]][it]->GetLabel(2) == label)) {
4042 // calculates line parameters
4044 Double_t det = sum*sumx2 - sumx*sumx;
4045 angle[iter] = (sum*sumxy - sumx*sumdy) / det;
4046 mean[iter] = (sumx2*sumdy - sumx*sumxy) / det;
4047 meanz[iter] = sumz / sum;
4048 moffset[iter] = sumdy / sum;
4049 mpads /= sum; // Mean number of pads
4051 Double_t sigma2 = 0.0; // Normalized residuals - for line fit
4052 Double_t sigma1 = 0.0; // Normalized residuals - constant fit
4054 for (Int_t it = 0; it < t1 - t0; it++) {
4055 if (!cl[best[iter][it]][it]) {
4058 Double_t dx = x[it] - xmean;
4059 Double_t ytr = mean[iter] + angle[iter] * dx;
4060 sigma2 += (dy[best[iter][it]][it] - ytr)
4061 * (dy[best[iter][it]][it] - ytr);
4062 sigma1 += (dy[best[iter][it]][it] - moffset[iter])
4063 * (dy[best[iter][it]][it] - moffset[iter]);
4066 sigma2 /= (sum - 2); // Normalized residuals
4067 sigma1 /= (sum - 1); // Normalized residuals
4068 smean[iter] = sigma2 * (sumx2 / det); // Estimated error2 of mean
4069 sangle[iter] = sigma2 * ( sum / det); // Estimated error2 of angle
4070 smeanangle[iter] = sigma2 * (-sumx / det); // Correlation
4071 sigmas[iter] = TMath::Sqrt(sigma1);
4072 smoffset[iter] = (sigma1 / sum) + 0.01*0.01; // Sigma of mean offset + unisochronity sigma
4075 // Iterative choice of "better path"
4077 for (Int_t it = 0; it < t1 - t0; it++) {
4079 if (!cl[best[iter][it]][it]) {
4083 // Add unisochronity + angular effect contribution
4084 Double_t sigmatr2 = smoffset[iter] + 0.5*tany*tany;
4085 Double_t sweight = 1.0/sigmatr2 + 1.0/track->GetSigmaY2();
4086 Double_t weighty = (moffset[iter] / sigmatr2) / sweight; // Weighted mean
4087 Double_t sigmacl = TMath::Sqrt(sigma1*sigma1 + track->GetSigmaY2());
4088 Double_t mindist = 100000.0;
4091 for (Int_t ih = 0; ih < 10; ih++) {
4095 Double_t dist2 = (dy[ih][it] - weighty) / sigmacl;
4096 dist2 *= dist2; // Chi2 distance
4097 if (dist2 < mindist) {
4102 best[iter+1][it] = ihbest;
4106 // Update best hypothesy if better chi2 according tracklet position and angle
4108 Double_t sy2 = smean[iter] + track->GetSigmaY2();
4109 Double_t sa2 = sangle[iter] + track->GetSigmaSnp2(); // track->fCee;
4110 Double_t say = track->GetSigmaSnpY(); // track->fCey;
4111 //Double_t chi20 = mean[bestiter]*mean[bestiter ] / sy2+angle[bestiter]*angle[bestiter]/sa2;
4112 //Double_t chi21 = mean[iter]*mean[iter] / sy2+angle[iter]*angle[iter]/sa2;
4114 Double_t detchi = sy2*sa2 - say*say;
4115 Double_t invers[3] = {sa2/detchi,sy2/detchi,-say/detchi}; // Inverse value of covariance matrix
4117 Double_t chi20 = mean[bestiter] * mean[bestiter] * invers[0]
4118 + angle[bestiter] * angle[bestiter] * invers[1]
4119 + 2.0 * mean[bestiter] * angle[bestiter] * invers[2];
4120 Double_t chi21 = mean[iter] * mean[iter] * invers[0]
4121 + angle[iter] * angle[iter] * invers[1]
4122 + 2.0 * mean[iter] * angle[iter] * invers[2];
4123 tchi2s[iter] = chi21;
4125 if ((changes[iter] <= changes[bestiter]) &&
4135 Double_t sigma2 = sigmas[0]; // Choose as sigma from 0 iteration
4136 Short_t maxpos = -1;
4137 Float_t maxcharge = 0.0;
4138 Short_t maxpos4 = -1;
4139 Float_t maxcharge4 = 0.0;
4140 Short_t maxpos5 = -1;
4141 Float_t maxcharge5 = 0.0;
4143 //if (tchi2s[bestiter]>25.) sigma2*=tchi2s[bestiter]/25.;
4144 //if (tchi2s[bestiter]>25.) sigma2=1000.; // dont'accept
4146 Double_t exB = AliTRDcalibDB::Instance()->GetOmegaTau(AliTRDcalibDB::Instance()->GetVdrift(0,0,0)
4147 ,-AliTracker::GetBz()*0.1);
4148 Double_t expectederr = sigma2*sigma2 + 0.01*0.01;
4150 expectederr += (mpads - 3.5) * 0.04;
4152 if (changes[bestiter] > 1) {
4153 expectederr += changes[bestiter] * 0.01;
4155 expectederr += (0.03 * (tany-exB)*(tany-exB)) * 15.0;
4156 //if (tchi2s[bestiter]>18.) expectederr*= tchi2s[bestiter]/18.;
4157 //expectederr+=10000;
4159 for (Int_t it = 0; it < t1 - t0; it++) {
4161 if (!cl[best[bestiter][it]][it]) {
4165 cl[best[bestiter][it]][it]->SetSigmaY2(expectederr); // Set cluster error
4166 if (!cl[best[bestiter][it]][it]->IsUsed()) {
4167 cl[best[bestiter][it]][it]->SetY(cl[best[bestiter][it]][it]->GetY());
4168 //cl[best[bestiter][it]][it]->Use();
4171 // Time bins with maximal charge
4172 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge) {
4173 maxcharge = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
4174 maxpos = cl[best[bestiter][it]][it]->GetLocalTimeBin();
4177 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge4) {
4178 if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 4) {
4179 maxcharge4 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
4180 maxpos4 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
4184 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge5) {
4185 if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 5) {
4186 maxcharge5 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
4187 maxpos5 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
4191 // Time bins with maximal charge
4192 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge) {
4193 maxcharge = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
4194 maxpos = cl[best[bestiter][it]][it]->GetLocalTimeBin();
4197 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge4) {
4198 if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 4) {
4199 maxcharge4 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
4200 maxpos4 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
4204 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge5) {
4205 if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 5) {
4206 maxcharge5 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
4207 maxpos5 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
4211 clusters[it+t0] = indexes[best[bestiter][it]][it];
4213 // Still needed ????
4214 //if (cl[best[bestiter][it]][it]->GetLocalTimeBin()>4 &&
4215 //cl[best[bestiter][it]][it]->GetLocalTimeBin()<18) clusters[it+t0]
4216 // = indexes[best[bestiter][it]][it]; //Test
4221 // Set tracklet parameters
4223 Double_t trackleterr2 = smoffset[bestiter] + 0.01*0.01;
4225 trackleterr2 += (mpads - 3.5) * 0.04;
4227 trackleterr2 += changes[bestiter] * 0.01;
4228 trackleterr2 *= TMath::Max(14.0 - nfound,1.0);
4229 trackleterr2 += 0.2 * (tany-exB)*(tany-exB);
4231 // Set tracklet parameters
4233 ,track2.GetY() + moffset[bestiter]
4237 tracklet.SetTilt(h01);
4238 tracklet.SetP0(mean[bestiter]);
4239 tracklet.SetP1(angle[bestiter]);
4240 tracklet.SetN(nfound);
4241 tracklet.SetNCross(changes[bestiter]);
4242 tracklet.SetPlane(plane);
4243 tracklet.SetSigma2(expectederr);
4244 tracklet.SetChi2(tchi2s[bestiter]);
4245 tracklet.SetMaxPos(maxpos,maxpos4,maxpos5);
4246 track->SetTracklets(plane,tracklet);
4247 track->SetNWrong(track->GetNWrong() + nbad[0]);
4252 TClonesArray array0("AliTRDcluster");
4253 TClonesArray array1("AliTRDcluster");
4254 array0.ExpandCreateFast(t1 - t0 + 1);
4255 array1.ExpandCreateFast(t1 - t0 + 1);
4256 TTreeSRedirector &cstream = *fDebugStreamer;
4257 AliTRDcluster dummy;
4261 for (Int_t it = 0; it < t1 - t0; it++) {
4262 dy0[it] = dy[0][it];
4263 dyb[it] = dy[best[bestiter][it]][it];
4265 new(array0[it]) AliTRDcluster(*cl[0][it]);
4268 new(array0[it]) AliTRDcluster(dummy);
4270 if(cl[best[bestiter][it]][it]) {
4271 new(array1[it]) AliTRDcluster(*cl[best[bestiter][it]][it]);
4274 new(array1[it]) AliTRDcluster(dummy);
4277 TGraph graph0(t1-t0,x,dy0);
4278 TGraph graph1(t1-t0,x,dyb);
4279 TGraph graphy(t1-t0,x,yt);
4280 TGraph graphz(t1-t0,x,zt);
4282 if (AliTRDReconstructor::StreamLevel() > 0) {
4283 cstream << "tracklet"
4284 << "track.=" << track // Track parameters
4285 << "tany=" << tany // Tangent of the local track angle
4286 << "xmean=" << xmean // Xmean - reference x of tracklet
4287 << "tilt=" << h01 // Tilt angle
4288 << "nall=" << nall // Number of foundable clusters
4289 << "nfound=" << nfound // Number of found clusters
4290 << "clfound=" << clfound // Total number of found clusters in road
4291 << "mpads=" << mpads // Mean number of pads per cluster
4292 << "plane=" << plane // Plane number
4293 << "detector=" << detector // Detector number
4294 << "road=" << road // The width of the used road
4295 << "graph0.=" << &graph0 // x - y = dy for closest cluster
4296 << "graph1.=" << &graph1 // x - y = dy for second closest cluster
4297 << "graphy.=" << &graphy // y position of the track
4298 << "graphz.=" << &graphz // z position of the track
4299 //<< "fCl.=" << &array0 // closest cluster
4300 //<< "fCl2.=" << &array1 // second closest cluster
4301 << "maxpos=" << maxpos // Maximal charge postion
4302 << "maxcharge=" << maxcharge // Maximal charge
4303 << "maxpos4=" << maxpos4 // Maximal charge postion - after bin 4
4304 << "maxcharge4=" << maxcharge4 // Maximal charge - after bin 4
4305 << "maxpos5=" << maxpos5 // Maximal charge postion - after bin 5
4306 << "maxcharge5=" << maxcharge5 // Maximal charge - after bin 5
4307 << "bestiter=" << bestiter // Best iteration number
4308 << "tracklet.=" << &tracklet // Corrspond to the best iteration
4309 << "tchi20=" << tchi2s[0] // Chi2 of cluster in the 0 iteration
4310 << "tchi2b=" << tchi2s[bestiter] // Chi2 of cluster in the best iteration
4311 << "sigmas0=" << sigmas[0] // Residuals sigma
4312 << "sigmasb=" << sigmas[bestiter] // Residulas sigma
4313 << "ngood0=" << ngood[0] // Number of good clusters in 0 iteration
4314 << "nbad0=" << nbad[0] // Number of bad clusters in 0 iteration
4315 << "ngoodb=" << ngood[bestiter] // in best iteration
4316 << "nbadb=" << nbad[bestiter] // in best iteration
4317 << "changes0=" << changes[0] // Changes of pardrows in iteration number 0
4318 << "changesb=" << changes[bestiter] // Changes of pardrows in best iteration
4319 << "moffset0=" << moffset[0] // Offset fixing angle in iter=0
4320 << "smoffset0=" << smoffset[0] // Sigma of offset fixing angle in iter=0
4321 << "moffsetb=" << moffset[bestiter] // Offset fixing angle in iter=best
4322 << "smoffsetb=" << smoffset[bestiter] // Sigma of offset fixing angle in iter=best
4323 << "mean0=" << mean[0] // Mean dy in iter=0;
4324 << "smean0=" << smean[0] // Sigma of mean dy in iter=0
4325 << "meanb=" << mean[bestiter] // Mean dy in iter=best
4326 << "smeanb=" << smean[bestiter] // Sigma of mean dy in iter=best
4327 << "angle0=" << angle[0] // Angle deviation in the iteration number 0
4328 << "sangle0=" << sangle[0] // Sigma of angular deviation in iteration number 0
4329 << "angleb=" << angle[bestiter] // Angle deviation in the best iteration
4330 << "sangleb=" << sangle[bestiter] // Sigma of angle deviation in the best iteration
4331 << "expectederr=" << expectederr // Expected error of cluster position
4339 //_____________________________________________________________________________
4340 Int_t AliTRDtrackerHLT::Freq(Int_t n, const Int_t *inlist
4341 , Int_t *outlist, Bool_t down)
4344 // Sort eleements according occurancy
4345 // The size of output array has is 2*n
4351 Int_t *sindexS = new Int_t[n]; // Temporary array for sorting
4352 Int_t *sindexF = new Int_t[2*n];
4353 for (Int_t i = 0; i < n; i++) {
4357 TMath::Sort(n,inlist,sindexS,down);
4359 Int_t last = inlist[sindexS[0]];
4362 sindexF[0+n] = last;
4366 for (Int_t i = 1; i < n; i++) {
4367 val = inlist[sindexS[i]];
4369 sindexF[countPos]++;
4373 sindexF[countPos+n] = val;
4374 sindexF[countPos]++;
4382 // Sort according frequency
4383 TMath::Sort(countPos,sindexF,sindexS,kTRUE);
4385 for (Int_t i = 0; i < countPos; i++) {
4386 outlist[2*i ] = sindexF[sindexS[i]+n];
4387 outlist[2*i+1] = sindexF[sindexS[i]];
4397 //_____________________________________________________________________________
4398 AliTRDtrack *AliTRDtrackerHLT::RegisterSeed(AliTRDseed *seeds, Double_t *params)
4404 Double_t alpha = AliTRDgeometry::GetAlpha();
4405 Double_t shift = AliTRDgeometry::GetAlpha()/2.0;
4409 c[ 1] = 0.0; c[ 2] = 2.0;
4410 c[ 3] = 0.0; c[ 4] = 0.0; c[ 5] = 0.02;
4411 c[ 6] = 0.0; c[ 7] = 0.0; c[ 8] = 0.0; c[ 9] = 0.1;
4412 c[10] = 0.0; c[11] = 0.0; c[12] = 0.0; c[13] = 0.0; c[14] = params[5]*params[5]*0.01;
4415 AliTRDcluster *cl = 0;
4417 for (Int_t ilayer = 0; ilayer < 6; ilayer++) {
4418 if (seeds[ilayer].IsOK()) {
4419 for (Int_t itime = 22; itime > 0; itime--) {
4420 if (seeds[ilayer].GetIndexes(itime) > 0) {
4421 index = seeds[ilayer].GetIndexes(itime);
4422 cl = seeds[ilayer].GetClusters(itime);
4435 AliTRDtrack *track = new AliTRDtrack(cl
4440 ,params[6]*alpha+shift);
4441 track->PropagateTo(params[0]-5.0);
4442 track->ResetCovariance(1);
4444 AliDebug(2, Form("FollowBackProlongation"));
4446 Int_t rc = FollowBackProlongation(*track);
4448 AliWarning("rc < 30 deleting the track");
4454 CookdEdxTimBin(*track);
4455 CookLabel(track,0.9);
4461 //////////////////////////////////////////////////////////////////////////////////////////
4463 void AliTRDtrackerHLT::InitLogHists() {
4465 fHBackfit = new TH1D("logTRD_backfit", "", 40, -0.5, 39.5);
4466 fHRefit = new TH1D("logTRD_refit", "", 40, -0.5, 39.5);
4467 fHClSearch = new TH1D("logTRD_clSearch", "", 60, -0.5, 59.5);
4469 fHX = new TH1D("logTRD_X", ";x (cm)", 200, 50, 400);
4470 fHNCl = new TH1D("logTRD_ncl", "", 40, -0.5, 39.5);
4471 fHNClTrack = new TH1D("logTRD_nclTrack", "", 180, -0.5, 179.5);
4473 fHMinYPos = new TH1D("logTRD_minYPos", ";#delta Y (cm)", 400, -6, 6);
4474 fHMinYNeg = new TH1D("logTRD_minYNeg", ";#delta Y (cm)", 400, -6, 6);
4475 fHMinZ = new TH1D("logTRD_minZ", ";#delta Z (cm)", 400, -20, 20);
4476 fHMinD = new TH2D("logTRD_minD", ";#delta Y (cm);#delta Z (cm)", 100, -6, 6, 100, -50, 50);
4478 fHDeltaX = new TH1D("logTRD_deltaX", ";#delta X (cm)", 100, -5, 5);
4479 fHXCl = new TH1D("logTRD_xCl", ";cluster x position (cm)", 1000, 280, 380);
4481 const char *nameFindCl[4] = {"logTRD_clY", "logTRD_clZ", "logTRD_clB", "logTRD_clG"};
4483 for(int i=0; i<4; i++) {
4484 fHFindCl[i] = new TH1D(nameFindCl[i], "", 30, -0.5, 29.5);
4488 //////////////////////////////////////////////////////////////////////////////////////////
4490 void AliTRDtrackerHLT::SaveLogHists() {
4492 TDirectory *sav = gDirectory;
4495 TSeqCollection *col = gROOT->GetListOfFiles();
4496 int N = col->GetEntries();
4497 for(int i=0; i<N; i++) {
4498 logFile = (TFile*)col->At(i);
4499 if (strstr(logFile->GetName(), "AliESDs.root")) break;
4503 fHBackfit->Write(fHBackfit->GetName(), TObject::kOverwrite);
4504 fHRefit->Write(fHRefit->GetName(), TObject::kOverwrite);
4505 fHClSearch->Write(fHClSearch->GetName(), TObject::kOverwrite);
4506 fHX->Write(fHX->GetName(), TObject::kOverwrite);
4507 fHNCl->Write(fHNCl->GetName(), TObject::kOverwrite);
4508 fHNClTrack->Write(fHNClTrack->GetName(), TObject::kOverwrite);
4510 fHMinYPos->Write(fHMinYPos->GetName(), TObject::kOverwrite);
4511 fHMinYNeg->Write(fHMinYNeg->GetName(), TObject::kOverwrite);
4512 fHMinD->Write(fHMinD->GetName(), TObject::kOverwrite);
4513 fHMinZ->Write(fHMinZ->GetName(), TObject::kOverwrite);
4515 fHDeltaX->Write(fHDeltaX->GetName(), TObject::kOverwrite);
4516 fHXCl->Write(fHXCl->GetName(), TObject::kOverwrite);
4519 for(int i=0; i<4; i++)
4520 fHFindCl[i]->Write(fHFindCl[i]->GetName(), TObject::kOverwrite);
4527 //////////////////////////////////////////////////////////////////////////////////////////