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");
188 AliWarning("Cannot find TRD geometry!\n");
189 fGeom = new AliTRDgeometry();
191 fGeom->ReadGeoMatrices();
195 for (Int_t geomS = 0; geomS < AliTRDtrackingHLT::kTrackingSectors; geomS++) {
197 fTrSec[trS] = new AliTRDtrackingSectorHLT(fGeom,geomS);
198 for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) {
199 fHoles[icham][trS] = fGeom->IsHole(0,icham,geomS);
203 AliTRDpadPlane *padPlane = fGeom->GetPadPlane(0,0);
204 Float_t tiltAngle = TMath::Abs(padPlane->GetTiltingAngle());
205 if (tiltAngle < 0.1) {
209 if (!AliTRDcalibDB::Instance()) {
210 AliFatal("Could not get calibration object");
212 fTimeBinsPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
214 fDebugStreamer = new TTreeSRedirector("TRDdebug.root");
222 //_____________________________________________________________________________
223 AliTRDtrackerHLT::~AliTRDtrackerHLT()
226 // Destructor of AliTRDtrackerHLT
246 for (Int_t geomS = 0; geomS < AliTRDtrackingHLT::kTrackingSectors; geomS++) {
247 delete fTrSec[geomS];
250 if (fDebugStreamer) {
251 delete fDebugStreamer;
256 //_____________________________________________________________________________
257 Int_t AliTRDtrackerHLT::LocalToGlobalID(Int_t lid)
260 // Transform internal TRD ID to global detector ID
263 Int_t isector = fGeom->GetSector(lid);
264 Int_t ichamber = fGeom->GetChamber(lid);
265 Int_t iplan = fGeom->GetPlane(lid);
267 #ifdef HAVNT_ALIGEOMMANAGER
268 // this was introcuced for backward compatibility with AliRoot v4-05-Release
269 AliAlignObj::ELayerID iLayer = AliAlignObj::kTRD1;
272 iLayer = AliAlignObj::kTRD1;
275 iLayer = AliAlignObj::kTRD2;
278 iLayer = AliAlignObj::kTRD3;
281 iLayer = AliAlignObj::kTRD4;
284 iLayer = AliAlignObj::kTRD5;
287 iLayer = AliAlignObj::kTRD6;
291 Int_t modId = isector * fGeom->Ncham() + ichamber;
292 UShort_t volid = AliAlignObj::LayerToVolUID(iLayer,modId);
293 #else //HAVNT_ALIGEOMMANAGER
295 AliGeomManager::ELayerID iLayer = AliGeomManager::kTRD1;
298 iLayer = AliGeomManager::kTRD1;
301 iLayer = AliGeomManager::kTRD2;
304 iLayer = AliGeomManager::kTRD3;
307 iLayer = AliGeomManager::kTRD4;
310 iLayer = AliGeomManager::kTRD5;
313 iLayer = AliGeomManager::kTRD6;
317 Int_t modId = isector * fGeom->Ncham() + ichamber;
318 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,modId);
319 #endif //HAVNT_ALIGEOMMANAGER
325 //_____________________________________________________________________________
326 Int_t AliTRDtrackerHLT::GlobalToLocalID(Int_t gid)
329 // Transform global detector ID to local detector ID
332 #ifdef HAVNT_ALIGEOMMANAGER
333 // this was introcuced for backward compatibility with AliRoot v4-05-Release
335 AliAlignObj::ELayerID layerId = AliAlignObj::VolUIDToLayer(gid,modId);
337 Int_t isector = modId / fGeom->Ncham();
338 Int_t ichamber = modId % fGeom->Ncham();
342 case AliAlignObj::kTRD1:
345 case AliAlignObj::kTRD2:
348 case AliAlignObj::kTRD3:
351 case AliAlignObj::kTRD4:
354 case AliAlignObj::kTRD5:
357 case AliAlignObj::kTRD6:
368 Int_t lid = fGeom->GetDetector(iLayer,ichamber,isector);
369 #else //HAVNT_ALIGEOMMANAGER
372 AliGeomManager::ELayerID layerId = AliGeomManager::VolUIDToLayer(gid,modId);
374 Int_t isector = modId / fGeom->Ncham();
375 Int_t ichamber = modId % fGeom->Ncham();
379 case AliGeomManager::kTRD1:
382 case AliGeomManager::kTRD2:
385 case AliGeomManager::kTRD3:
388 case AliGeomManager::kTRD4:
391 case AliGeomManager::kTRD5:
394 case AliGeomManager::kTRD6:
405 Int_t lid = fGeom->GetDetector(iLayer,ichamber,isector);
406 #endif //HAVNT_ALIGEOMMANAGER
412 //_____________________________________________________________________________
413 Bool_t AliTRDtrackerHLT::Transform(AliTRDcluster *cluster)
416 // Transform something ... whatever ...
419 // Magic constants for geo manager transformation
420 const Double_t kX0shift = 2.52;
421 const Double_t kX0shift5 = 3.05;
424 // Apply alignment and calibration to transform cluster
426 Int_t detector = cluster->GetDetector();
427 Int_t plane = fGeom->GetPlane(cluster->GetDetector());
428 Int_t chamber = fGeom->GetChamber(cluster->GetDetector());
429 Int_t sector = fGeom->GetSector(cluster->GetDetector());
431 Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region
432 Double_t driftX = TMath::Max(cluster->GetX()-dxAmp*0.5,0.0); // Drift distance
437 Double_t vdrift = AliTRDcalibDB::Instance()->GetVdrift(cluster->GetDetector(),0,0);
438 Double_t exB = AliTRDcalibDB::Instance()->GetOmegaTau(vdrift,-AliTracker::GetBz()*0.1);
440 AliTRDpadPlane *padPlane = fGeom->GetPadPlane(plane,chamber);
441 Double_t zshiftIdeal = 0.5*(padPlane->GetRow0()+padPlane->GetRowEnd());
442 Double_t localPos[3];
443 Double_t localPosTracker[3];
444 localPos[0] = -cluster->GetX();
445 localPos[1] = cluster->GetY() - driftX * exB;
446 localPos[2] = cluster->GetZ() - zshiftIdeal;
448 cluster->SetY(cluster->GetY() - driftX*exB);
449 Double_t xplane = (Double_t) AliTRDgeometry::GetTime0(plane);
450 cluster->SetX(xplane - cluster->GetX());
452 TGeoHMatrix *matrix = fGeom->GetCorrectionMatrix(cluster->GetDetector());
454 // No matrix found - if somebody used geometry with holes
455 AliError("Invalid Geometry - Default Geometry used\n");
458 matrix->LocalToMaster(localPos,localPosTracker);
460 if (AliTRDReconstructor::StreamLevel() > 1) {
461 (* fDebugStreamer) << "Transform"
463 << "matrix.=" << matrix
464 << "Detector=" << detector
465 << "Sector=" << sector
467 << "Chamber=" << chamber
468 << "lx0=" << localPosTracker[0]
469 << "ly0=" << localPosTracker[1]
470 << "lz0=" << localPosTracker[2]
475 cluster->SetX(localPosTracker[0]+kX0shift5);
478 cluster->SetX(localPosTracker[0]+kX0shift);
481 cluster->SetY(localPosTracker[1]);
482 cluster->SetZ(localPosTracker[2]);
488 //_____________________________________________________________________________
489 // Bool_t AliTRDtrackerHLT::Transform(AliTRDcluster *cluster)
492 // // Is this still needed ????
494 // const Double_t kDriftCorrection = 1.01; // drift coeficient correction
495 // const Double_t kTime0Cor = 0.32; // time0 correction
497 // const Double_t kX0shift = 2.52;
498 // const Double_t kX0shift5 = 3.05;
501 // // apply alignment and calibration to transform cluster
504 // Int_t detector = cluster->GetDetector();
505 // Int_t plane = fGeom->GetPlane(cluster->GetDetector());
506 // Int_t chamber = fGeom->GetChamber(cluster->GetDetector());
507 // Int_t sector = fGeom->GetSector(cluster->GetDetector());
509 // Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region
510 // Double_t driftX = TMath::Max(cluster->GetX()-dxAmp*0.5,0.); // drift distance
514 // Double_t vdrift = AliTRDcalibDB::Instance()->GetVdrift(cluster->GetDetector(),0,0);
515 // Double_t exB = AliTRDcalibDB::Instance()->GetOmegaTau(vdrift,-AliTracker::GetBz()*0.1);
518 // AliTRDCommonParam* commonParam = AliTRDCommonParam::Instance();
519 // AliTRDpadPlane * padPlane = commonParam->GetPadPlane(plane,chamber);
520 // Double_t zshiftIdeal = 0.5*(padPlane->GetRow0()+padPlane->GetRowEnd());
521 // Double_t localPos[3], globalPos[3], localPosTracker[3], localPosTracker2[3];
522 // localPos[2] = -cluster->GetX();
523 // localPos[0] = cluster->GetY() - driftX*exB;
524 // localPos[1] = cluster->GetZ() -zshiftIdeal;
525 // TGeoHMatrix * matrix = fGeom->GetGeoMatrix(cluster->GetDetector());
526 // matrix->LocalToMaster(localPos, globalPos);
528 // Double_t sectorAngle = 20.*(sector%18)+10;
529 // TGeoHMatrix rotSector;
530 // rotSector.RotateZ(sectorAngle);
531 // rotSector.LocalToMaster(globalPos, localPosTracker);
534 // TGeoHMatrix matrix2(*matrix);
535 // matrix2.MultiplyLeft(&rotSector);
536 // matrix2.LocalToMaster(localPos,localPosTracker2);
540 // cluster->SetY(cluster->GetY() - driftX*exB);
541 // Double_t xplane = (Double_t) AliTRDgeometry::GetTime0(plane);
542 // cluster->SetX(xplane- kDriftCorrection*(cluster->GetX()-kTime0Cor));
543 // (*fDebugStreamer)<<"Transform"<<
545 // "matrix.="<<matrix<<
546 // "matrix2.="<<&matrix2<<
547 // "Detector="<<detector<<
548 // "Sector="<<sector<<
550 // "Chamber="<<chamber<<
551 // "lx0="<<localPosTracker[0]<<
552 // "ly0="<<localPosTracker[1]<<
553 // "lz0="<<localPosTracker[2]<<
554 // "lx2="<<localPosTracker2[0]<<
555 // "ly2="<<localPosTracker2[1]<<
556 // "lz2="<<localPosTracker2[2]<<
560 // cluster->SetX(localPosTracker[0]+kX0shift5);
562 // cluster->SetX(localPosTracker[0]+kX0shift);
564 // cluster->SetY(localPosTracker[1]);
565 // cluster->SetZ(localPosTracker[2]);
569 //_____________________________________________________________________________
570 Bool_t AliTRDtrackerHLT::AdjustSector(AliTRDtrack *track)
573 // Rotates the track when necessary
576 Double_t alpha = AliTRDgeometry::GetAlpha();
577 Double_t y = track->GetY();
578 Double_t ymax = track->GetX()*TMath::Tan(0.5*alpha);
580 // Is this still needed ????
581 //Int_t ns = AliTRDgeometry::kNsect;
582 //Int_t s=Int_t(track->GetAlpha()/alpha)%ns;
586 if (!track->Rotate( alpha)) {
590 else if (y < -ymax) {
592 if (!track->Rotate(-alpha)) {
601 //_____________________________________________________________________________
602 AliTRDcluster *AliTRDtrackerHLT::GetCluster(AliTRDtrack *track, Int_t plane
603 , Int_t timebin, UInt_t &index)
606 // Try to find cluster in the backup list
609 AliTRDcluster *cl =0;
610 Int_t *indexes = track->GetBackupIndexes();
612 for (UInt_t i = 0; i < AliTRDtrackingHLT::kMaxTimeBinIndex; i++) {
613 if (indexes[i] == 0) {
616 AliTRDcluster *cli = (AliTRDcluster *) fClusters->UncheckedAt(indexes[i]);
620 if (cli->GetLocalTimeBin() != timebin) {
623 Int_t iplane = fGeom->GetPlane(cli->GetDetector());
624 if (iplane == plane) {
635 //_____________________________________________________________________________
636 Int_t AliTRDtrackerHLT::GetLastPlane(AliTRDtrack *track)
639 // Return last updated plane
643 Int_t *indexes = track->GetBackupIndexes();
645 for (UInt_t i = 0; i < AliTRDtrackingHLT::kMaxTimeBinIndex; i++) {
646 AliTRDcluster *cli = (AliTRDcluster *) fClusters->UncheckedAt(indexes[i]);
650 Int_t iplane = fGeom->GetPlane(cli->GetDetector());
651 if (iplane > lastplane) {
660 //_____________________________________________________________________________
661 Int_t AliTRDtrackerHLT::Clusters2Tracks(AliESDEvent *event)
664 // Finds tracks within the TRD. The ESD event is expected to contain seeds
665 // at the outer part of the TRD. The seeds
666 // are found within the TRD if fAddTRDseeds is TRUE.
667 // The tracks are propagated to the innermost time bin
668 // of the TRD and the ESD event is updated
671 Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins();
672 Float_t foundMin = fgkMinClustersInTrack * timeBins;
675 //Int_t innerTB = fTrSec[0]->GetInnerTimeBin();
677 Int_t n = event->GetNumberOfTracks();
678 for (Int_t i = 0; i < n; i++) {
680 AliESDtrack *seed = event->GetTrack(i);
681 ULong_t status = seed->GetStatus();
682 if ((status & AliESDtrack::kTRDout) == 0) {
685 if ((status & AliESDtrack::kTRDin) != 0) {
690 AliTRDtrack *seed2 = new AliTRDtrack(*seed);
691 //seed2->ResetCovariance();
692 AliTRDtrack *pt = new AliTRDtrack(*seed2,seed2->GetAlpha());
693 AliTRDtrack &t = *pt;
694 FollowProlongation(t);
695 if (t.GetNumberOfClusters() >= foundMin) {
697 CookLabel(pt,1 - fgkLabelFraction);
702 Double_t xTPC = 250.0;
703 if (PropagateToX(t,xTPC,fgkMaxStep)) {
704 seed->UpdateTrackParams(pt, AliESDtrack::kTRDin);
711 AliInfo(Form("Number of loaded seeds: %d",nseed));
712 AliInfo(Form("Number of found tracks from loaded seeds: %d",found));
713 AliInfo(Form("Total number of found tracks: %d",found));
719 //_____________________________________________________________________________
720 Int_t AliTRDtrackerHLT::PropagateBack(AliESDEvent *event)
723 // Gets seeds from ESD event. The seeds are AliTPCtrack's found and
724 // backpropagated by the TPC tracker. Each seed is first propagated
725 // to the TRD, and then its prolongation is searched in the TRD.
726 // If sufficiently long continuation of the track is found in the TRD
727 // the track is updated, otherwise it's stored as originaly defined
728 // by the TPC tracker.
731 Int_t found = 0; // number of tracks found
732 Float_t foundMin = 20.0;
733 Int_t n = event->GetNumberOfTracks();
736 Float_t *quality = new Float_t[n];
737 Int_t *index = new Int_t[n];
738 for (Int_t i = 0; i < n; i++) {
739 AliESDtrack *seed = event->GetTrack(i);
740 Double_t covariance[15];
741 seed->GetExternalCovariance(covariance);
742 quality[i] = covariance[0]+covariance[2];
743 //quality[i] = covariance[0];
745 TMath::Sort(n,quality,index,kFALSE);
747 for (Int_t i = 0; i < n; i++) {
749 //AliESDtrack *seed = event->GetTrack(i);
750 AliESDtrack *seed = event->GetTrack(index[i]);
753 ULong_t status = seed->GetStatus();
754 if ((status & AliESDtrack::kTPCout) == 0) {
759 if ((status & AliESDtrack::kTRDout) != 0) {
764 Int_t lbl = seed->GetLabel();
765 AliTRDtrack *track = new AliTRDtrack(*seed);
766 track->SetSeedLabel(lbl);
767 seed->UpdateTrackParams(track,AliESDtrack::kTRDbackup); // Make backup
769 Float_t p4 = track->GetC();
770 Int_t expectedClr = FollowBackProlongation(*track);
773 fHX->Fill(track->GetX());
776 // store the last measurement
778 fHNClTrack->Fill(track->GetNumberOfClusters());
779 if (track->GetNumberOfClusters() >= foundMin) {
783 CookdEdxTimBin(*track);
784 CookLabel(track,1 - fgkLabelFraction);
785 if (track->GetBackupTrack()) {
786 //fHBackfit->Fill(5);
787 UseClusters(track->GetBackupTrack());
788 seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup);
794 // inter-tracks competition ???
795 if ((TMath::Abs(track->GetC() - p4) / TMath::Abs(p4) < 0.2) ||
796 (track->Pt() > 0.8)) {
801 // Make backup for back propagation
804 Int_t foundClr = track->GetNumberOfClusters();
805 if (foundClr >= foundMin) {
807 CookdEdxTimBin(*track);
808 CookLabel(track,1 - fgkLabelFraction);
809 if (track->GetBackupTrack()) {
810 UseClusters(track->GetBackupTrack());
813 // Sign only gold tracks
814 if (track->GetChi2() / track->GetNumberOfClusters() < 4) {
815 if ((seed->GetKinkIndex(0) == 0) &&
816 (track->Pt() < 1.5)) {
820 Bool_t isGold = kFALSE;
823 if (track->GetChi2() / track->GetNumberOfClusters() < 5) {
824 //seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup);
825 if (track->GetBackupTrack()) {
826 seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup);
835 (track->GetNCross() == 0) &&
836 (track->GetChi2() / track->GetNumberOfClusters() < 7)) {
837 //seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup);
838 if (track->GetBackupTrack()) {
839 seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup);
845 (track->GetBackupTrack())) {
846 if ((track->GetBackupTrack()->GetNumberOfClusters() > foundMin) &&
847 ((track->GetBackupTrack()->GetChi2()/(track->GetBackupTrack()->GetNumberOfClusters()+1)) < 7)) {
848 seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup);
853 if ((track->StatusForTOF() > 0) &&
854 (track->GetNCross() == 0) &&
855 (Float_t(track->GetNumberOfClusters()) / Float_t(track->GetNExpected()) > 0.4)) {
856 //seed->UpdateTrackParams(track->GetBackupTrack(), AliESDtrack::kTRDbackup);
864 // Debug part of tracking
865 TTreeSRedirector &cstream = *fDebugStreamer;
866 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.
867 if (AliTRDReconstructor::StreamLevel() > 0) {
868 if (track->GetBackupTrack()) {
870 << "EventNrInFile=" << eventNrInFile
873 << "trdback.=" << track->GetBackupTrack()
878 << "EventNrInFile=" << eventNrInFile
881 << "trdback.=" << track
887 // Propagation to the TOF (I.Belikov)
888 if (track->GetStop() == kFALSE) {
891 Double_t xtof = 371.0;
892 Double_t xTOF0 = 370.0;
894 Double_t c2 = track->GetSnp() + track->GetC() * (xtof - track->GetX());
895 if (TMath::Abs(c2) >= 0.99) {
902 PropagateToX(*track,xTOF0,fgkMaxStep);
904 // Energy losses taken to the account - check one more time
905 c2 = track->GetSnp() + track->GetC() * (xtof - track->GetX());
906 if (TMath::Abs(c2) >= 0.99) {
913 //if (!PropagateToX(*track,xTOF0,fgkMaxStep)) {
914 // fHBackfit->Fill(7);
919 Double_t ymax = xtof * TMath::Tan(0.5 * AliTRDgeometry::GetAlpha());
921 track->GetYAt(xtof,GetBz(),y);
923 if (!track->Rotate( AliTRDgeometry::GetAlpha())) {
929 else if (y < -ymax) {
930 if (!track->Rotate(-AliTRDgeometry::GetAlpha())) {
937 if (track->PropagateTo(xtof)) {
938 seed->UpdateTrackParams(track,AliESDtrack::kTRDout);
941 for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
942 for (Int_t j = 0; j < AliESDtrack::kNSlice; j++) {
943 seed->SetTRDsignals(track->GetPIDsignals(i,j),i,j);
945 seed->SetTRDTimBin(track->GetPIDTimBin(i),i);
947 //seed->SetTRDtrack(new AliTRDtrack(*track));
948 if (track->GetNumberOfClusters() > foundMin) {
959 if ((track->GetNumberOfClusters() > 15) &&
960 (track->GetNumberOfClusters() > 0.5*expectedClr)) {
962 seed->UpdateTrackParams(track,AliESDtrack::kTRDout);
965 //seed->SetStatus(AliESDtrack::kTRDStop);
966 for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
967 for (Int_t j = 0; j <AliESDtrack::kNSlice; j++) {
968 seed->SetTRDsignals(track->GetPIDsignals(i,j),i,j);
970 seed->SetTRDTimBin(track->GetPIDTimBin(i),i);
972 //seed->SetTRDtrack(new AliTRDtrack(*track));
978 seed->SetTRDQuality(track->StatusForTOF());
979 seed->SetTRDBudget(track->GetBudget(0));
985 AliInfo(Form("Number of seeds: %d",fNseeds));
986 AliInfo(Form("Number of back propagated TRD tracks: %d",found));
989 if (AliTRDReconstructor::SeedingOn()) {
990 MakeSeedsMI(3,5,event);
1004 //_____________________________________________________________________________
1005 Int_t AliTRDtrackerHLT::RefitInward(AliESDEvent *event)
1008 // Refits tracks within the TRD. The ESD event is expected to contain seeds
1009 // at the outer part of the TRD.
1010 // The tracks are propagated to the innermost time bin
1011 // of the TRD and the ESD event is updated
1012 // Origin: Thomas KUHR (Thomas.Kuhr@cern.ch)
1015 Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins();
1016 Float_t foundMin = fgkMinClustersInTrack * timeBins;
1019 //Int_t innerTB = fTrSec[0]->GetInnerTimeBin();
1022 Int_t n = event->GetNumberOfTracks();
1023 for (Int_t i = 0; i < n; i++) {
1025 AliESDtrack *seed = event->GetTrack(i);
1026 new (&seed2) AliTRDtrack(*seed);
1029 if (seed2.GetX() < 270.0) {
1030 seed->UpdateTrackParams(&seed2,AliESDtrack::kTRDbackup); // Backup TPC track - only update
1035 ULong_t status = seed->GetStatus();
1036 if ((status & AliESDtrack::kTRDout) == 0) {
1040 if ((status & AliESDtrack::kTRDin) != 0) {
1048 seed2.ResetCovariance(50.0);
1050 AliTRDtrack *pt = new AliTRDtrack(seed2,seed2.GetAlpha());
1051 Int_t *indexes2 = seed2.GetIndexes();
1052 for (Int_t i = 0; i < AliESDtrack::kNPlane;i++) {
1053 for (Int_t j = 0; j < AliESDtrack::kNSlice;j++) {
1054 pt->SetPIDsignals(seed2.GetPIDsignals(i,j),i,j);
1056 pt->SetPIDTimBin(seed2.GetPIDTimBin(i),i);
1059 Int_t *indexes3 = pt->GetBackupIndexes();
1060 for (Int_t i = 0; i < 200;i++) {
1061 if (indexes2[i] == 0) {
1064 indexes3[i] = indexes2[i];
1067 //AliTRDtrack *pt = seed2;
1068 AliTRDtrack &t = *pt;
1069 FollowProlongation(t);
1070 if (t.GetNumberOfClusters() >= foundMin) {
1072 //CookLabel(pt, 1-fgkLabelFraction);
1078 Double_t xTPC = 250.0;
1079 if (PropagateToX(t,xTPC,fgkMaxStep)) {
1081 seed->UpdateTrackParams(pt,AliESDtrack::kTRDrefit);
1084 for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
1085 for (Int_t j = 0; j < AliESDtrack::kNSlice; j++) {
1086 seed->SetTRDsignals(pt->GetPIDsignals(i,j),i,j);
1088 seed->SetTRDTimBin(pt->GetPIDTimBin(i),i);
1092 // If not prolongation to TPC - propagate without update
1094 AliTRDtrack *seed2 = new AliTRDtrack(*seed);
1095 seed2->ResetCovariance(5.0);
1096 AliTRDtrack *pt2 = new AliTRDtrack(*seed2,seed2->GetAlpha());
1098 if (PropagateToX(*pt2,xTPC,fgkMaxStep)) {
1100 CookdEdxTimBin(*pt2);
1101 seed->UpdateTrackParams(pt2,AliESDtrack::kTRDrefit);
1104 for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
1105 for (Int_t j = 0; j < AliESDtrack::kNSlice; j++) {
1106 seed->SetTRDsignals(pt2->GetPIDsignals(i,j),i,j);
1108 seed->SetTRDTimBin(pt2->GetPIDTimBin(i),i);
1118 AliInfo(Form("Number of loaded seeds: %d",nseed));
1119 AliInfo(Form("Number of found tracks from loaded seeds: %d",found));
1125 //_____________________________________________________________________________
1126 Int_t AliTRDtrackerHLT::FollowProlongation(AliTRDtrack &t)
1129 // Starting from current position on track=t this function tries
1130 // to extrapolate the track up to timeBin=0 and to confirm prolongation
1131 // if a close cluster is found. Returns the number of clusters
1132 // expected to be found in sensitive layers
1133 // GeoManager used to estimate mean density
1137 Int_t lastplane = GetLastPlane(&t);
1140 Int_t expectedNumberOfClusters = 0;
1142 for (Int_t iplane = lastplane; iplane >= 0; iplane--) {
1144 Int_t row0 = GetGlobalTimeBin(0,iplane,GetTimeBinsPerPlane()-1);
1145 Int_t rowlast = GetGlobalTimeBin(0,iplane,0);
1148 // Propagate track close to the plane if neccessary
1150 Double_t currentx = fTrSec[0]->GetLayer(rowlast)->GetX();
1151 if (currentx < (-fgkMaxStep + t.GetX())) {
1152 // Propagate closer to chamber - safety space fgkMaxStep
1153 if (!PropagateToX(t,currentx+fgkMaxStep,fgkMaxStep)) {
1158 if (!AdjustSector(&t)) {
1163 // Get material budget
1172 // Starting global position
1174 // End global position
1175 x = fTrSec[0]->GetLayer(row0)->GetX();
1176 if (!t.GetProlongation(x,y,z)) {
1179 xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha());
1180 xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha());
1182 AliTracker::MeanMaterialBudget(xyz0,xyz1,param);
1183 xrho = param[0]*param[4];
1184 xx0 = param[1]; // Get mean propagation parameters
1187 // Propagate and update
1189 sector = t.GetSector();
1190 //for (Int_t itime=GetTimeBinsPerPlane()-1;itime>=0;itime--) {
1191 for (Int_t itime = 0 ; itime < GetTimeBinsPerPlane(); itime++) {
1193 Int_t ilayer = GetGlobalTimeBin(0,iplane,itime);
1194 expectedNumberOfClusters++;
1195 t.SetNExpected(t.GetNExpected() + 1);
1196 if (t.GetX() > 345.0) {
1197 t.SetNExpectedLast(t.GetNExpectedLast() + 1);
1199 AliTRDpropagationLayerHLT &timeBin = *(fTrSec[sector]->GetLayer(ilayer));
1200 AliTRDcluster *cl = 0;
1202 Double_t maxChi2 = fgkMaxChi2;
1207 AliTRDcluster *cl0 = timeBin[0];
1209 // No clusters in given time bin
1213 Int_t plane = fGeom->GetPlane(cl0->GetDetector());
1214 if (plane > lastplane) {
1218 Int_t timebin = cl0->GetLocalTimeBin();
1219 AliTRDcluster *cl2 = GetCluster(&t,plane,timebin,index);
1224 //Double_t h01 = GetTiltFactor(cl); //I.B's fix
1225 //maxChi2=t.GetPredictedChi2(cl,h01);
1230 //if (cl->GetNPads()<5)
1231 Double_t dxsample = timeBin.GetdX();
1232 t.SetSampledEdx(TMath::Abs(cl->GetQ()/dxsample));
1233 Double_t h01 = GetTiltFactor(cl);
1234 Int_t det = cl->GetDetector();
1235 Int_t plane = fGeom->GetPlane(det);
1236 if (t.GetX() > 345.0) {
1237 t.SetNLast(t.GetNLast() + 1);
1238 t.SetChi2Last(t.GetChi2Last() + maxChi2);
1241 Double_t xcluster = cl->GetX();
1242 t.PropagateTo(xcluster,xx0,xrho);
1244 if (!AdjustSector(&t)) {
1247 maxChi2 = t.GetPredictedChi2(cl,h01);
1250 if (!t.UpdateMI(cl,maxChi2,index,h01,plane)) {
1262 return expectedNumberOfClusters;
1266 //_____________________________________________________________________________
1267 Int_t AliTRDtrackerHLT::FollowBackProlongation(AliTRDtrack &t)
1270 // Starting from current radial position of track <t> this function
1271 // extrapolates the track up to outer timebin and in the sensitive
1272 // layers confirms prolongation if a close cluster is found.
1273 // Returns the number of clusters expected to be found in sensitive layers
1274 // Use GEO manager for material Description
1276 // return number of assigned clusters ?
1281 Int_t clusters[1000];
1284 Int_t expectedNumberOfClusters = 0;
1285 Float_t ratio0 = 0.0;
1286 AliTRDtracklet tracklet;
1288 // Calibration fill 2D
1289 AliTRDCalibraFillHisto *calibra = AliTRDCalibraFillHisto::Instance();
1291 AliInfo("Could not get Calibra instance\n");
1293 //this is error prone!!!
1294 if (calibra->GetMITracking()) {
1295 calibra->ResetTrack();
1298 for (Int_t i = 0; i < 1000; i++) {
1302 for (Int_t iplane = 0; iplane < AliESDtrack::kNPlane; iplane++) {
1304 int hb = iplane * 10;
1305 fHClSearch->Fill(hb);
1307 Int_t row0 = GetGlobalTimeBin(0,iplane,GetTimeBinsPerPlane()-1);
1308 Int_t rowlast = GetGlobalTimeBin(0,iplane,0);
1309 Double_t currentx = fTrSec[0]->GetLayer(row0)->GetX();
1310 if (currentx < t.GetX()) {
1311 fHClSearch->Fill(hb+1);
1316 // Propagate closer to chamber if neccessary
1318 if (currentx > (fgkMaxStep + t.GetX())) {
1319 if (!PropagateToX(t,currentx-fgkMaxStep,fgkMaxStep)) {
1320 fHClSearch->Fill(hb+2);
1324 if (!AdjustSector(&t)) {
1325 fHClSearch->Fill(hb+3);
1328 if (TMath::Abs(t.GetSnp()) > fgkMaxSnp) {
1329 fHClSearch->Fill(hb+4);
1334 // Get material budget inside of chamber
1342 // Starting global position
1344 // End global position
1345 x = fTrSec[0]->GetLayer(rowlast)->GetX();
1346 if (!t.GetProlongation(x,y,z)) {
1347 fHClSearch->Fill(hb+5);
1350 xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha());
1351 xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha());
1353 AliTracker::MeanMaterialBudget(xyz0,xyz1,param);
1354 xrho= param[0]*param[4];
1355 xx0 = param[1]; // Get mean propagation parameters
1360 sector = t.GetSector();
1361 Float_t ncl = FindClusters(sector,row0,rowlast,&t,clusters,tracklet);
1362 fHNCl->Fill(tracklet.GetN());
1364 if (tracklet.GetN() < GetTimeBinsPerPlane()/3) {
1365 fHClSearch->Fill(hb+6);
1370 // Propagate and update track
1372 for (Int_t itime = GetTimeBinsPerPlane()-1; itime >= 0; itime--) {
1374 Int_t ilayer = GetGlobalTimeBin(0, iplane,itime);
1375 expectedNumberOfClusters++;
1376 t.SetNExpected(t.GetNExpected() + 1);
1377 if (t.GetX() > 345.0) {
1378 t.SetNExpectedLast(t.GetNExpectedLast() + 1);
1380 AliTRDpropagationLayerHLT &timeBin = *(fTrSec[sector]->GetLayer(ilayer));
1381 AliTRDcluster *cl = 0;
1383 Double_t maxChi2 = fgkMaxChi2;
1388 if (clusters[ilayer] > 0) {
1389 index = clusters[ilayer];
1390 cl = (AliTRDcluster *)GetCluster(index);
1391 //Double_t h01 = GetTiltFactor(cl); // I.B's fix
1392 //maxChi2=t.GetPredictedChi2(cl,h01); //
1397 //if (cl->GetNPads() < 5)
1398 Double_t dxsample = timeBin.GetdX();
1399 t.SetSampledEdx(TMath::Abs(cl->GetQ()/dxsample));
1400 Double_t h01 = GetTiltFactor(cl);
1401 Int_t det = cl->GetDetector();
1402 Int_t plane = fGeom->GetPlane(det);
1403 if (t.GetX() > 345.0) {
1404 t.SetNLast(t.GetNLast() + 1);
1405 t.SetChi2Last(t.GetChi2Last() + maxChi2);
1407 Double_t xcluster = cl->GetX();
1408 t.PropagateTo(xcluster,xx0,xrho);
1409 maxChi2 = t.GetPredictedChi2(cl,h01);
1412 if (!t.UpdateMI(cl,maxChi2,index,h01,plane)) {
1413 if (!t.Update(cl,maxChi2,index,h01)) {
1418 if (calibra->GetMITracking()) {
1419 calibra->UpdateHistograms(cl,&t);
1422 // Reset material budget if 2 consecutive gold
1424 if ((t.GetTracklets(plane).GetN() + t.GetTracklets(plane-1).GetN()) > 20) {
1435 ratio0 = ncl / Float_t(fTimeBinsPerPlane);
1436 Float_t ratio1 = Float_t(t.GetNumberOfClusters()+1) / Float_t(t.GetNExpected()+1);
1437 if ((tracklet.GetChi2() < 18.0) &&
1440 (ratio0+ratio1 > 1.5) &&
1441 (t.GetNCross() == 0) &&
1442 (TMath::Abs(t.GetSnp()) < 0.85) &&
1443 (t.GetNumberOfClusters() > 20)){
1444 //if (ratio0 > 0.8) {
1445 t.MakeBackupTrack(); // Make backup of the track until is gold
1450 return expectedNumberOfClusters;
1453 //_____________________________________________________________________________
1454 Int_t AliTRDtrackerHLT::PropagateToX(AliTRDtrack &t, Double_t xToGo, Double_t maxStep)
1457 // Starting from current radial position of track <t> this function
1458 // extrapolates the track up to radial position <xToGo>.
1459 // Returns 1 if track reaches the plane, and 0 otherwise
1462 const Double_t kEpsilon = 0.00001;
1463 //Double_t tanmax = TMath::Tan(0.5*AliTRDgeometry::GetAlpha());
1464 Double_t xpos = t.GetX();
1465 Double_t dir = (xpos<xToGo) ? 1.0 : -1.0;
1467 while (((xToGo-xpos)*dir) > kEpsilon) {
1469 Double_t step = dir * TMath::Min(TMath::Abs(xToGo-xpos),maxStep);
1477 // Starting global position
1481 if (!t.GetProlongation(x,y,z)) {
1482 return 0; // No prolongation
1485 xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha());
1486 xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha());
1489 AliTracker::MeanMaterialBudget(xyz0,xyz1,param);
1490 if (!t.PropagateTo(x,param[1],param[0]*param[4])) {
1502 //_____________________________________________________________________________
1503 Int_t AliTRDtrackerHLT::LoadClusters(TTree *cTree)
1506 // Fills clusters into TRD tracking_sectors
1507 // Note that the numbering scheme for the TRD tracking_sectors
1508 // differs from that of TRD sectors
1511 if (ReadClusters(fClusters,cTree)) {
1512 AliError("Problem with reading the clusters !");
1515 Int_t ncl = fClusters->GetEntriesFast();
1517 AliInfo(Form("Sorting %d clusters",ncl));
1520 for (Int_t ichamber = 0; ichamber < 5; ichamber++) {
1521 for (Int_t isector = 0; isector < 18; isector++) {
1522 fHoles[ichamber][isector] = kTRUE;
1528 AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(ncl);
1529 Int_t detector = c->GetDetector();
1530 Int_t localTimeBin = c->GetLocalTimeBin();
1531 Int_t sector = fGeom->GetSector(detector);
1532 Int_t plane = fGeom->GetPlane(detector);
1533 Int_t trackingSector = sector;
1535 //if (c->GetLabel(0) > 0) {
1536 if (c->GetQ() > 10) {
1537 Int_t chamber = fGeom->GetChamber(detector);
1538 fHoles[chamber][trackingSector] = kFALSE;
1541 Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(plane,localTimeBin);
1545 Int_t layer = fTrSec[trackingSector]->GetLayerNumber(gtb);
1549 // Apply pos correction
1551 fHXCl->Fill(c->GetX());
1553 fTrSec[trackingSector]->GetLayer(layer)->SetX(c->GetX());
1554 fTrSec[trackingSector]->GetLayer(layer)->InsertCluster(c,index);
1561 //_____________________________________________________________________________
1562 void AliTRDtrackerHLT::UnloadClusters()
1565 // Clears the arrays of clusters and tracks. Resets sectors and timebins
1571 nentr = fClusters->GetEntriesFast();
1572 for (i = 0; i < nentr; i++) {
1573 delete fClusters->RemoveAt(i);
1577 nentr = fSeeds->GetEntriesFast();
1578 for (i = 0; i < nentr; i++) {
1579 delete fSeeds->RemoveAt(i);
1582 nentr = fTracks->GetEntriesFast();
1583 for (i = 0; i < nentr; i++) {
1584 delete fTracks->RemoveAt(i);
1587 Int_t nsec = AliTRDgeometry::kNsect;
1588 for (i = 0; i < nsec; i++) {
1589 for(Int_t pl = 0; pl < fTrSec[i]->GetNumberOfLayers(); pl++) {
1590 fTrSec[i]->GetLayer(pl)->Clear();
1596 //_____________________________________________________________________________
1597 void AliTRDtrackerHLT::MakeSeedsMI(Int_t /*inner*/, Int_t /*outer*/, AliESDEvent *esd)
1600 // Creates seeds using clusters between position inner plane and outer plane
1605 const Double_t kMaxTheta = 1.0;
1606 const Double_t kMaxPhi = 2.0;
1608 const Double_t kRoad0y = 6.0; // Road for middle cluster
1609 const Double_t kRoad0z = 8.5; // Road for middle cluster
1611 const Double_t kRoad1y = 2.0; // Road in y for seeded cluster
1612 const Double_t kRoad1z = 20.0; // Road in z for seeded cluster
1614 const Double_t kRoad2y = 3.0; // Road in y for extrapolated cluster
1615 const Double_t kRoad2z = 20.0; // Road in z for extrapolated cluster
1616 const Int_t kMaxSeed = 3000;
1618 Int_t maxSec = AliTRDgeometry::kNsect;
1620 // Linear fitters in planes
1621 TLinearFitter fitterTC(2,"hyp2"); // Fitting with tilting pads - kz fixed - kz= Z/x, + vertex const
1622 TLinearFitter fitterT2(4,"hyp4"); // Fitting with tilting pads - kz not fixed
1623 fitterTC.StoreData(kTRUE);
1624 fitterT2.StoreData(kTRUE);
1625 AliRieman rieman(1000); // Rieman fitter
1626 AliRieman rieman2(1000); // Rieman fitter
1628 // Find the maximal and minimal layer for the planes
1630 AliTRDpropagationLayerHLT *reflayers[6];
1631 for (Int_t i = 0; i < 6; i++) {
1632 layers[i][0] = 10000;
1635 for (Int_t ns = 0; ns < maxSec; ns++) {
1636 for (Int_t ilayer = 0; ilayer < fTrSec[ns]->GetNumberOfLayers(); ilayer++) {
1637 AliTRDpropagationLayerHLT &layer = *(fTrSec[ns]->GetLayer(ilayer));
1641 Int_t det = layer[0]->GetDetector();
1642 Int_t plane = fGeom->GetPlane(det);
1643 if (ilayer < layers[plane][0]) {
1644 layers[plane][0] = ilayer;
1646 if (ilayer > layers[plane][1]) {
1647 layers[plane][1] = ilayer;
1652 AliTRDpadPlane *padPlane = fGeom->GetPadPlane(0,0);
1653 Double_t h01 = TMath::Tan(-TMath::Pi() / 180.0 * padPlane->GetTiltingAngle());
1654 Double_t hL[6]; // Tilting angle
1655 Double_t xcl[6]; // X - position of reference cluster
1656 Double_t ycl[6]; // Y - position of reference cluster
1657 Double_t zcl[6]; // Z - position of reference cluster
1659 AliTRDcluster *cl[6] = { 0, 0, 0, 0, 0, 0 }; // Seeding clusters
1660 Float_t padlength[6] = { 10.0, 10.0, 10.0, 10.0, 10.0, 10.0 }; // Current pad-length
1662 Double_t chi2R = 0.0;
1663 Double_t chi2Z = 0.0;
1664 Double_t chi2RF = 0.0;
1665 Double_t chi2ZF = 0.0;
1667 Int_t nclusters; // Total number of clusters
1668 for (Int_t i = 0; i < 6; i++) {
1676 AliTRDseed *pseed = new AliTRDseed[kMaxSeed*6];
1677 AliTRDseed *seed[kMaxSeed];
1678 for (Int_t iseed = 0; iseed < kMaxSeed; iseed++) {
1679 seed[iseed]= &pseed[iseed*6];
1681 AliTRDseed *cseed = seed[0];
1683 Double_t seedquality[kMaxSeed];
1684 Double_t seedquality2[kMaxSeed];
1685 Double_t seedparams[kMaxSeed][7];
1686 Int_t seedlayer[kMaxSeed];
1687 Int_t registered = 0;
1688 Int_t sort[kMaxSeed];
1693 for (Int_t ns = 0; ns < maxSec; ns++) { // Loop over sectors
1694 //for (Int_t ns = 0; ns < 5; ns++) { // Loop over sectors
1696 AliInfo(Form("sector %d", ns));
1698 registered = 0; // Reset registerd seed counter
1699 cseed = seed[registered];
1702 for (Int_t sLayer = 2; sLayer >= 0; sLayer--) {
1703 //for (Int_t dseed = 5; dseed < 15; dseed += 3) {
1705 //AliInfo(Form("sLayer %d", sLayer));
1708 Int_t dseed = 5 + Int_t(iter) * 3;
1710 // Initialize seeding layers
1711 for (Int_t ilayer = 0; ilayer < 6; ilayer++) {
1712 reflayers[ilayer] = fTrSec[ns]->GetLayer(layers[ilayer][1]-dseed);
1713 xcl[ilayer] = reflayers[ilayer]->GetX();
1716 Double_t xref = (xcl[sLayer+1] + xcl[sLayer+2]) * 0.5;
1717 AliTRDpropagationLayerHLT &layer0 = *reflayers[sLayer+0];
1718 AliTRDpropagationLayerHLT &layer1 = *reflayers[sLayer+1];
1719 AliTRDpropagationLayerHLT &layer2 = *reflayers[sLayer+2];
1720 AliTRDpropagationLayerHLT &layer3 = *reflayers[sLayer+3];
1722 Int_t maxn3 = layer3;
1723 for (Int_t icl3 = 0; icl3 < maxn3; icl3++) {
1725 //AliInfo(Form("icl3 %d", icl3));
1727 AliTRDcluster *cl3 = layer3[icl3];
1731 padlength[sLayer+3] = TMath::Sqrt(cl3->GetSigmaZ2() * 12.0);
1732 ycl[sLayer+3] = cl3->GetY();
1733 zcl[sLayer+3] = cl3->GetZ();
1734 Float_t yymin0 = ycl[sLayer+3] - 1.0 - kMaxPhi * (xcl[sLayer+3]-xcl[sLayer+0]);
1735 Float_t yymax0 = ycl[sLayer+3] + 1.0 + kMaxPhi * (xcl[sLayer+3]-xcl[sLayer+0]);
1736 Int_t maxn0 = layer0;
1738 for (Int_t icl0 = layer0.Find(yymin0); icl0 < maxn0; icl0++) {
1740 AliTRDcluster *cl0 = layer0[icl0];
1744 if (cl3->IsUsed() && cl0->IsUsed()) {
1747 ycl[sLayer+0] = cl0->GetY();
1748 zcl[sLayer+0] = cl0->GetZ();
1749 if (ycl[sLayer+0] > yymax0) {
1752 Double_t tanphi = (ycl[sLayer+3]-ycl[sLayer+0]) / (xcl[sLayer+3]-xcl[sLayer+0]);
1753 if (TMath::Abs(tanphi) > kMaxPhi) {
1756 Double_t tantheta = (zcl[sLayer+3]-zcl[sLayer+0]) / (xcl[sLayer+3]-xcl[sLayer+0]);
1757 if (TMath::Abs(tantheta) > kMaxTheta) {
1760 padlength[sLayer+0] = TMath::Sqrt(cl0->GetSigmaZ2() * 12.0);
1762 // Expected position in 1 layer
1763 Double_t y1exp = ycl[sLayer+0] + (tanphi) * (xcl[sLayer+1]-xcl[sLayer+0]);
1764 Double_t z1exp = zcl[sLayer+0] + (tantheta) * (xcl[sLayer+1]-xcl[sLayer+0]);
1765 Float_t yymin1 = y1exp - kRoad0y - tanphi;
1766 Float_t yymax1 = y1exp + kRoad0y + tanphi;
1767 Int_t maxn1 = layer1;
1769 for (Int_t icl1 = layer1.Find(yymin1); icl1 < maxn1; icl1++) {
1771 AliTRDcluster *cl1 = layer1[icl1];
1776 if (cl3->IsUsed()) nusedCl++;
1777 if (cl0->IsUsed()) nusedCl++;
1778 if (cl1->IsUsed()) nusedCl++;
1782 ycl[sLayer+1] = cl1->GetY();
1783 zcl[sLayer+1] = cl1->GetZ();
1784 if (ycl[sLayer+1] > yymax1) {
1787 if (TMath::Abs(ycl[sLayer+1]-y1exp) > kRoad0y+tanphi) {
1790 if (TMath::Abs(zcl[sLayer+1]-z1exp) > kRoad0z) {
1793 padlength[sLayer+1] = TMath::Sqrt(cl1->GetSigmaZ2() * 12.0);
1795 Double_t y2exp = ycl[sLayer+0]+(tanphi) * (xcl[sLayer+2]-xcl[sLayer+0]) + (ycl[sLayer+1]-y1exp);
1796 Double_t z2exp = zcl[sLayer+0]+(tantheta) * (xcl[sLayer+2]-xcl[sLayer+0]);
1797 Int_t index2 = layer2.FindNearestCluster(y2exp,z2exp,kRoad1y,kRoad1z);
1801 AliTRDcluster *cl2 = (AliTRDcluster *) GetCluster(index2);
1802 padlength[sLayer+2] = TMath::Sqrt(cl2->GetSigmaZ2() * 12.0);
1803 ycl[sLayer+2] = cl2->GetY();
1804 zcl[sLayer+2] = cl2->GetZ();
1805 if (TMath::Abs(cl2->GetZ()-z2exp) > kRoad0z) {
1810 rieman.AddPoint(xcl[sLayer+0],ycl[sLayer+0],zcl[sLayer+0],1,10);
1811 rieman.AddPoint(xcl[sLayer+1],ycl[sLayer+1],zcl[sLayer+1],1,10);
1812 rieman.AddPoint(xcl[sLayer+3],ycl[sLayer+3],zcl[sLayer+3],1,10);
1813 rieman.AddPoint(xcl[sLayer+2],ycl[sLayer+2],zcl[sLayer+2],1,10);
1817 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
1818 cseed[iLayer].Reset();
1823 for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
1824 cseed[sLayer+iLayer].SetZref(0,rieman.GetZat(xcl[sLayer+iLayer]));
1825 chi2Z += (cseed[sLayer+iLayer].GetZref(0)- zcl[sLayer+iLayer])
1826 * (cseed[sLayer+iLayer].GetZref(0)- zcl[sLayer+iLayer]);
1827 cseed[sLayer+iLayer].SetZref(1,rieman.GetDZat(xcl[sLayer+iLayer]));
1828 cseed[sLayer+iLayer].SetYref(0,rieman.GetYat(xcl[sLayer+iLayer]));
1829 chi2R += (cseed[sLayer+iLayer].GetYref(0)- ycl[sLayer+iLayer])
1830 * (cseed[sLayer+iLayer].GetYref(0)- ycl[sLayer+iLayer]);
1831 cseed[sLayer+iLayer].SetYref(1,rieman.GetDYat(xcl[sLayer+iLayer]));
1833 if (TMath::Sqrt(chi2R) > 1.0/iter) {
1836 if (TMath::Sqrt(chi2Z) > 7.0/iter) {
1840 Float_t minmax[2] = { -100.0, 100.0 };
1841 for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
1842 Float_t max = zcl[sLayer+iLayer]+padlength[sLayer+iLayer] * 0.5
1843 + 1.0 - cseed[sLayer+iLayer].GetZref(0);
1844 if (max < minmax[1]) {
1847 Float_t min = zcl[sLayer+iLayer]-padlength[sLayer+iLayer] * 0.5
1848 - 1.0 - cseed[sLayer+iLayer].GetZref(0);
1849 if (min > minmax[0]) {
1854 Bool_t isFake = kFALSE;
1855 if (cl0->GetLabel(0) != cl3->GetLabel(0)) {
1858 if (cl1->GetLabel(0) != cl3->GetLabel(0)) {
1861 if (cl2->GetLabel(0) != cl3->GetLabel(0)) {
1865 if (AliTRDReconstructor::StreamLevel() > 0) {
1866 if ((!isFake) || ((icl3%10) == 0)) { // Debugging print
1867 TTreeSRedirector &cstream = *fDebugStreamer;
1869 << "isFake=" << isFake
1875 << "X0=" << xcl[sLayer+0]
1876 << "X1=" << xcl[sLayer+1]
1877 << "X2=" << xcl[sLayer+2]
1878 << "X3=" << xcl[sLayer+3]
1879 << "Y2exp=" << y2exp
1880 << "Z2exp=" << z2exp
1881 << "Chi2R=" << chi2R
1882 << "Chi2Z=" << chi2Z
1883 << "Seed0.=" << &cseed[sLayer+0]
1884 << "Seed1.=" << &cseed[sLayer+1]
1885 << "Seed2.=" << &cseed[sLayer+2]
1886 << "Seed3.=" << &cseed[sLayer+3]
1887 << "Zmin=" << minmax[0]
1888 << "Zmax=" << minmax[1]
1893 AliDebug(2, Form("Fit Seeding part"));
1895 ////////////////////////////////////////////////////////////////////////////////////
1899 ////////////////////////////////////////////////////////////////////////////////////
1905 Bool_t isOK = kTRUE;
1907 for (Int_t jLayer = 0; jLayer < 4; jLayer++) {
1909 cseed[sLayer+jLayer].SetTilt(hL[sLayer+jLayer]);
1910 cseed[sLayer+jLayer].SetPadLength(padlength[sLayer+jLayer]);
1911 cseed[sLayer+jLayer].SetX0(xcl[sLayer+jLayer]);
1913 for (Int_t iter = 0; iter < 2; iter++) {
1916 // In iteration 0 we try only one pad-row
1917 // If quality not sufficient we try 2 pad-rows - about 5% of tracks cross 2 pad-rows
1919 AliTRDseed tseed = cseed[sLayer+jLayer];
1920 Float_t roadz = padlength[sLayer+jLayer] * 0.5;
1922 roadz = padlength[sLayer+jLayer];
1925 Float_t quality = 10000.0;
1927 for (Int_t iTime = 2; iTime < 20; iTime++) {
1929 AliTRDpropagationLayerHLT &layer = *(fTrSec[ns]->GetLayer(layers[sLayer+jLayer][1]-iTime));
1930 Double_t dxlayer = layer.GetX() - xcl[sLayer+jLayer];
1931 Double_t zexp = cl[sLayer+jLayer]->GetZ();
1934 // Try 2 pad-rows in second iteration
1935 zexp = tseed.GetZref(0) + tseed.GetZref(1) * dxlayer;
1936 if (zexp > cl[sLayer+jLayer]->GetZ()) {
1937 zexp = cl[sLayer+jLayer]->GetZ() + padlength[sLayer+jLayer]*0.5;
1939 if (zexp < cl[sLayer+jLayer]->GetZ()) {
1940 zexp = cl[sLayer+jLayer]->GetZ() - padlength[sLayer+jLayer]*0.5;
1944 Double_t yexp = tseed.GetYref(0) + tseed.GetYref(1) * dxlayer;
1945 Int_t index = layer.FindNearestCluster(yexp,zexp,kRoad1y,roadz);
1950 AliTRDcluster *cl = (AliTRDcluster *) GetCluster(index);
1952 tseed.SetIndexes(iTime,index);
1953 tseed.SetClusters(iTime,cl); // Register cluster
1954 tseed.SetX(iTime,dxlayer); // Register cluster
1955 tseed.SetY(iTime,cl->GetY()); // Register cluster
1956 tseed.SetZ(iTime,cl->GetZ()); // Register cluster
1962 // Count the number of clusters and distortions into quality
1963 Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1);
1964 Float_t tquality = (18.0 - tseed.GetN2()) / 2.0 + TMath::Abs(dangle) / 0.1
1965 + TMath::Abs(tseed.GetYfit(0) - tseed.GetYref(0)) / 0.2
1966 + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer];
1967 if ((iter == 0) && tseed.IsOK()) {
1968 cseed[sLayer+jLayer] = tseed;
1974 if (tseed.IsOK() && (tquality < quality)) {
1975 cseed[sLayer+jLayer] = tseed;
1980 if (!cseed[sLayer+jLayer].IsOK()) {
1985 cseed[sLayer+jLayer].CookLabels();
1986 cseed[sLayer+jLayer].UpdateUsed();
1987 nusedCl += cseed[sLayer+jLayer].GetNUsed();
1999 for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
2000 if (cseed[sLayer+iLayer].IsOK()) {
2001 nclusters += cseed[sLayer+iLayer].GetN2();
2007 for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
2008 rieman.AddPoint(xcl[sLayer+iLayer]
2009 ,cseed[sLayer+iLayer].GetYfitR(0)
2010 ,cseed[sLayer+iLayer].GetZProb()
2019 for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
2020 cseed[sLayer+iLayer].SetYref(0,rieman.GetYat(xcl[sLayer+iLayer]));
2021 chi2R += (cseed[sLayer+iLayer].GetYref(0) - cseed[sLayer+iLayer].GetYfitR(0))
2022 * (cseed[sLayer+iLayer].GetYref(0) - cseed[sLayer+iLayer].GetYfitR(0));
2023 cseed[sLayer+iLayer].SetYref(1,rieman.GetDYat(xcl[sLayer+iLayer]));
2024 cseed[sLayer+iLayer].SetZref(0,rieman.GetZat(xcl[sLayer+iLayer]));
2025 chi2Z += (cseed[sLayer+iLayer].GetZref(0) - cseed[sLayer+iLayer].GetMeanz())
2026 * (cseed[sLayer+iLayer].GetZref(0) - cseed[sLayer+iLayer].GetMeanz());
2027 cseed[sLayer+iLayer].SetZref(1,rieman.GetDZat(xcl[sLayer+iLayer]));
2029 Double_t curv = rieman.GetC();
2034 Double_t sumda = TMath::Abs(cseed[sLayer+0].GetYfitR(1) - cseed[sLayer+0].GetYref(1))
2035 + TMath::Abs(cseed[sLayer+1].GetYfitR(1) - cseed[sLayer+1].GetYref(1))
2036 + TMath::Abs(cseed[sLayer+2].GetYfitR(1) - cseed[sLayer+2].GetYref(1))
2037 + TMath::Abs(cseed[sLayer+3].GetYfitR(1) - cseed[sLayer+3].GetYref(1));
2038 Double_t likea = TMath::Exp(-sumda*10.6);
2039 Double_t likechi2 = 0.0000000001;
2041 likechi2 += TMath::Exp(-TMath::Sqrt(chi2R) * 7.73);
2043 Double_t likechi2z = TMath::Exp(-chi2Z * 0.088) / TMath::Exp(-chi2Z * 0.019);
2044 Double_t likeN = TMath::Exp(-(72 - nclusters) * 0.19);
2045 Double_t like = likea * likechi2 * likechi2z * likeN;
2046 Double_t likePrimY = TMath::Exp(-TMath::Abs(cseed[sLayer+0].GetYref(1) - 130.0*curv) * 1.9);
2047 Double_t likePrimZ = TMath::Exp(-TMath::Abs(cseed[sLayer+0].GetZref(1)
2048 - cseed[sLayer+0].GetZref(0) / xcl[sLayer+0]) * 5.9);
2049 Double_t likePrim = TMath::Max(likePrimY*likePrimZ,0.0005);
2051 seedquality[registered] = like;
2052 seedlayer[registered] = sLayer;
2053 if (TMath::Log(0.000000000000001 + like) < -15) {
2056 AliTRDseed seedb[6];
2057 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2058 seedb[iLayer] = cseed[iLayer];
2061 AliDebug(2, Form("never here? FULL TRACK FIT PART START"));
2063 ////////////////////////////////////////////////////////////////////////////////////
2065 // Full track fit part
2067 ////////////////////////////////////////////////////////////////////////////////////
2074 // Add new layers - avoid long extrapolation
2076 Int_t tLayer[2] = { 0, 0 };
2090 for (Int_t iLayer = 0; iLayer < 2; iLayer++) {
2091 Int_t jLayer = tLayer[iLayer]; // Set tracking layer
2092 cseed[jLayer].Reset();
2093 cseed[jLayer].SetTilt(hL[jLayer]);
2094 cseed[jLayer].SetPadLength(padlength[jLayer]);
2095 cseed[jLayer].SetX0(xcl[jLayer]);
2096 // Get pad length and rough cluster
2097 Int_t indexdummy = reflayers[jLayer]->FindNearestCluster(cseed[jLayer].GetYref(0)
2098 ,cseed[jLayer].GetZref(0)
2101 if (indexdummy <= 0) {
2104 AliTRDcluster *cldummy = (AliTRDcluster *) GetCluster(indexdummy);
2105 padlength[jLayer] = TMath::Sqrt(cldummy->GetSigmaZ2() * 12.0);
2107 AliTRDseed::FitRiemanTilt(cseed,kTRUE);
2109 for (Int_t iLayer = 0; iLayer < 2; iLayer++) {
2111 Int_t jLayer = tLayer[iLayer]; // set tracking layer
2112 if ((jLayer == 0) && !(cseed[1].IsOK())) {
2113 continue; // break not allowed
2115 if ((jLayer == 5) && !(cseed[4].IsOK())) {
2116 continue; // break not allowed
2118 Float_t zexp = cseed[jLayer].GetZref(0);
2119 Double_t zroad = padlength[jLayer] * 0.5 + 1.0;
2121 for (Int_t iter = 0; iter < 2; iter++) {
2123 AliTRDseed tseed = cseed[jLayer];
2124 Float_t quality = 10000.0;
2126 for (Int_t iTime = 2; iTime < 20; iTime++) {
2127 AliTRDpropagationLayerHLT &layer = *(fTrSec[ns]->GetLayer(layers[jLayer][1]-iTime));
2128 Double_t dxlayer = layer.GetX()-xcl[jLayer];
2129 Double_t yexp = tseed.GetYref(0) + tseed.GetYref(1) * dxlayer;
2130 Float_t yroad = kRoad1y;
2131 Int_t index = layer.FindNearestCluster(yexp,zexp,yroad,zroad);
2135 AliTRDcluster *cl = (AliTRDcluster *) GetCluster(index);
2136 tseed.SetIndexes(iTime,index);
2137 tseed.SetClusters(iTime,cl); // Register cluster
2138 tseed.SetX(iTime,dxlayer); // Register cluster
2139 tseed.SetY(iTime,cl->GetY()); // Register cluster
2140 tseed.SetZ(iTime,cl->GetZ()); // Register cluster
2145 Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1);
2146 Float_t tquality = (18.0 - tseed.GetN2())/2.0 + TMath::Abs(dangle) / 0.1
2147 + TMath::Abs(tseed.GetYfit(0) - tseed.GetYref(0)) / 0.2
2148 + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer];
2149 if (tquality < quality) {
2150 cseed[jLayer] = tseed;
2159 if ( cseed[jLayer].IsOK()) {
2160 cseed[jLayer].CookLabels();
2161 cseed[jLayer].UpdateUsed();
2162 nusedf += cseed[jLayer].GetNUsed();
2163 AliTRDseed::FitRiemanTilt(cseed,kTRUE);
2169 AliTRDseed bseed[6];
2170 for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
2171 bseed[jLayer] = cseed[jLayer];
2173 Float_t lastquality = 10000.0;
2174 Float_t lastchi2 = 10000.0;
2175 Float_t chi2 = 1000.0;
2177 for (Int_t iter = 0; iter < 4; iter++) {
2179 // Sort tracklets according "quality", try to "improve" 4 worst
2180 Float_t sumquality = 0.0;
2181 Float_t squality[6];
2182 Int_t sortindexes[6];
2184 for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
2185 if (bseed[jLayer].IsOK()) {
2186 AliTRDseed &tseed = bseed[jLayer];
2187 Double_t zcor = tseed.GetTilt() * (tseed.GetZProb() - tseed.GetZref(0));
2188 Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1);
2189 Float_t tquality = (18.0 - tseed.GetN2()) / 2.0 + TMath::Abs(dangle) / 0.1
2190 + TMath::Abs(tseed.GetYfit(0) - (tseed.GetYref(0) - zcor)) / 0.2
2191 + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer];
2192 squality[jLayer] = tquality;
2195 squality[jLayer] = -1.0;
2197 sumquality +=squality[jLayer];
2200 if ((sumquality >= lastquality) ||
2201 (chi2 > lastchi2)) {
2204 lastquality = sumquality;
2207 for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
2208 cseed[jLayer] = bseed[jLayer];
2211 TMath::Sort(6,squality,sortindexes,kFALSE);
2213 for (Int_t jLayer = 5; jLayer > 1; jLayer--) {
2215 Int_t bLayer = sortindexes[jLayer];
2216 AliTRDseed tseed = bseed[bLayer];
2218 for (Int_t iTime = 2; iTime < 20; iTime++) {
2220 AliTRDpropagationLayerHLT &layer = *(fTrSec[ns]->GetLayer(layers[bLayer][1]-iTime));
2221 Double_t dxlayer = layer.GetX() - xcl[bLayer];
2222 Double_t zexp = tseed.GetZref(0);
2223 Double_t zcor = tseed.GetTilt() * (tseed.GetZProb() - tseed.GetZref(0));
2224 Float_t roadz = padlength[bLayer] + 1;
2225 if (TMath::Abs(tseed.GetZProb() - zexp) > 0.5*padlength[bLayer]) {
2226 roadz = padlength[bLayer] * 0.5;
2228 if (tseed.GetZfit(1)*tseed.GetZref(1) < 0.0) {
2229 roadz = padlength[bLayer] * 0.5;
2231 if (TMath::Abs(tseed.GetZProb() - zexp) < 0.1*padlength[bLayer]) {
2232 zexp = tseed.GetZProb();
2233 roadz = padlength[bLayer] * 0.5;
2236 Double_t yexp = tseed.GetYref(0) + tseed.GetYref(1) * dxlayer - zcor;
2237 Int_t index = layer.FindNearestCluster(yexp,zexp,kRoad1y,roadz);
2241 AliTRDcluster *cl = (AliTRDcluster *) GetCluster(index);
2243 tseed.SetIndexes(iTime,index);
2244 tseed.SetClusters(iTime,cl); // Register cluster
2245 tseed.SetX(iTime,dxlayer); // Register cluster
2246 tseed.SetY(iTime,cl->GetY()); // Register cluster
2247 tseed.SetZ(iTime,cl->GetZ()); // Register cluster
2253 Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1);
2254 Double_t zcor = tseed.GetTilt() * (tseed.GetZProb() - tseed.GetZref(0));
2255 Float_t tquality = (18.0 - tseed.GetN2()) / 2.0
2256 + TMath::Abs(dangle) / 0.1
2257 + TMath::Abs(tseed.GetYfit(0) - (tseed.GetYref(0) - zcor)) / 0.2
2258 + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer];
2259 if (tquality<squality[bLayer]) {
2260 bseed[bLayer] = tseed;
2266 chi2 = AliTRDseed::FitRiemanTilt(bseed,kTRUE);
2273 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2274 if (TMath::Abs(cseed[iLayer].GetYref(0) / cseed[iLayer].GetX0()) < 0.15) {
2277 if (cseed[iLayer].IsOK()) {
2278 nclusters += cseed[iLayer].GetN2();
2286 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2287 if (cseed[iLayer].IsOK()) {
2288 rieman.AddPoint(xcl[iLayer]
2289 ,cseed[iLayer].GetYfitR(0)
2290 ,cseed[iLayer].GetZProb()
2299 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2300 if (cseed[iLayer].IsOK()) {
2301 cseed[iLayer].SetYref(0,rieman.GetYat(xcl[iLayer]));
2302 chi2RF += (cseed[iLayer].GetYref(0) - cseed[iLayer].GetYfitR(0))
2303 * (cseed[iLayer].GetYref(0) - cseed[iLayer].GetYfitR(0));
2304 cseed[iLayer].SetYref(1,rieman.GetDYat(xcl[iLayer]));
2305 cseed[iLayer].SetZref(0,rieman.GetZat(xcl[iLayer]));
2306 chi2ZF += (cseed[iLayer].GetZref(0) - cseed[iLayer].GetMeanz())
2307 * (cseed[iLayer].GetZref(0) - cseed[iLayer].GetMeanz());
2308 cseed[iLayer].SetZref(1,rieman.GetDZat(xcl[iLayer]));
2311 chi2RF /= TMath::Max((nlayers - 3.0),1.0);
2312 chi2ZF /= TMath::Max((nlayers - 3.0),1.0);
2313 curv = rieman.GetC();
2315 Double_t xref2 = (xcl[2] + xcl[3]) * 0.5; // Middle of the chamber
2316 Double_t dzmf = rieman.GetDZat(xref2);
2317 Double_t zmf = rieman.GetZat(xref2);
2323 fitterTC.ClearPoints();
2324 fitterT2.ClearPoints();
2327 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2329 if (!cseed[iLayer].IsOK()) {
2333 for (Int_t itime = 0; itime < 25; itime++) {
2335 if (!cseed[iLayer].IsUsable(itime)) {
2338 // X relative to the middle chamber
2339 Double_t x = cseed[iLayer].GetX(itime) + cseed[iLayer].GetX0() - xref2;
2340 Double_t y = cseed[iLayer].GetY(itime);
2341 Double_t z = cseed[iLayer].GetZ(itime);
2342 // ExB correction to the correction
2346 Double_t x2 = cseed[iLayer].GetX(itime) + cseed[iLayer].GetX0();
2347 Double_t t = 1.0 / (x2*x2 + y*y);
2349 uvt[0] = 2.0 * x2 * uvt[1]; // u
2350 uvt[2] = 2.0 * hL[iLayer] * uvt[1];
2351 uvt[3] = 2.0 * hL[iLayer] * x * uvt[1];
2352 uvt[4] = 2.0 * (y + hL[iLayer]*z) * uvt[1];
2353 Double_t error = 2.0 * 0.2 * uvt[1];
2354 fitterT2.AddPoint(uvt,uvt[4],error);
2357 // Constrained rieman
2359 z = cseed[iLayer].GetZ(itime);
2360 uvt[0] = 2.0 * x2 * t; // u
2361 uvt[1] = 2.0 * hL[iLayer] * x2 * uvt[1];
2362 uvt[2] = 2.0 * (y + hL[iLayer] * (z - GetZ())) * t;
2363 fitterTC.AddPoint(uvt,uvt[2],error);
2364 rieman2.AddPoint(x2,y,z,1,10);
2374 Double_t rpolz0 = fitterT2.GetParameter(3);
2375 Double_t rpolz1 = fitterT2.GetParameter(4);
2378 // Linear fitter - not possible to make boundaries
2379 // Do not accept non possible z and dzdx combinations
2381 Bool_t acceptablez = kTRUE;
2382 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2383 if (cseed[iLayer].IsOK()) {
2384 Double_t zT2 = rpolz0 + rpolz1 * (xcl[iLayer] - xref2);
2385 if (TMath::Abs(cseed[iLayer].GetZProb() - zT2) > padlength[iLayer] * 0.5 + 1.0) {
2386 acceptablez = kFALSE;
2391 fitterT2.FixParameter(3,zmf);
2392 fitterT2.FixParameter(4,dzmf);
2394 fitterT2.ReleaseParameter(3);
2395 fitterT2.ReleaseParameter(4);
2396 rpolz0 = fitterT2.GetParameter(3);
2397 rpolz1 = fitterT2.GetParameter(4);
2400 Double_t chi2TR = fitterT2.GetChisquare() / Float_t(npointsT);
2401 Double_t chi2TC = fitterTC.GetChisquare() / Float_t(npointsT);
2402 Double_t polz1c = fitterTC.GetParameter(2);
2403 Double_t polz0c = polz1c * xref2;
2404 Double_t aC = fitterTC.GetParameter(0);
2405 Double_t bC = fitterTC.GetParameter(1);
2406 Double_t cC = aC / TMath::Sqrt(bC * bC + 1.0); // Curvature
2407 Double_t aR = fitterT2.GetParameter(0);
2408 Double_t bR = fitterT2.GetParameter(1);
2409 Double_t dR = fitterT2.GetParameter(2);
2410 Double_t cR = 1.0 + bR*bR - dR*aR;
2413 dca = -dR / (TMath::Sqrt(1.0 + bR*bR - dR*aR) + TMath::Sqrt(1.0 + bR*bR));
2414 cR = aR / TMath::Sqrt(cR);
2417 Double_t chi2ZT2 = 0.0;
2418 Double_t chi2ZTC = 0.0;
2419 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2420 if (cseed[iLayer].IsOK()) {
2421 Double_t zT2 = rpolz0 + rpolz1 * (xcl[iLayer] - xref2);
2422 Double_t zTC = polz0c + polz1c * (xcl[iLayer] - xref2);
2423 chi2ZT2 += TMath::Abs(cseed[iLayer].GetMeanz() - zT2);
2424 chi2ZTC += TMath::Abs(cseed[iLayer].GetMeanz() - zTC);
2427 chi2ZT2 /= TMath::Max((nlayers - 3.0),1.0);
2428 chi2ZTC /= TMath::Max((nlayers - 3.0),1.0);
2430 AliTRDseed::FitRiemanTilt(cseed,kTRUE);
2431 Float_t sumdaf = 0.0;
2432 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2433 if (cseed[iLayer].IsOK()) {
2434 sumdaf += TMath::Abs((cseed[iLayer].GetYfit(1) - cseed[iLayer].GetYref(1))
2435 / cseed[iLayer].GetSigmaY2());
2438 sumdaf /= Float_t (nlayers - 2.0);
2441 // Likelihoods for full track
2443 Double_t likezf = TMath::Exp(-chi2ZF * 0.14);
2444 Double_t likechi2C = TMath::Exp(-chi2TC * 0.677);
2445 Double_t likechi2TR = TMath::Exp(-chi2TR * 0.78);
2446 Double_t likeaf = TMath::Exp(-sumdaf * 3.23);
2447 seedquality2[registered] = likezf * likechi2TR * likeaf;
2449 // Still needed ????
2450 // Bool_t isGold = kFALSE;
2452 // if (nlayers == 6 && TMath::Log(0.000000001+seedquality2[index])<-5.) isGold =kTRUE; // gold
2453 // if (nlayers == findable && TMath::Log(0.000000001+seedquality2[index])<-4.) isGold =kTRUE; // gold
2454 // if (isGold &&nusedf<10){
2455 // for (Int_t jLayer=0;jLayer<6;jLayer++){
2456 // if ( seed[index][jLayer].IsOK()&&TMath::Abs(seed[index][jLayer].fYfit[1]-seed[index][jLayer].fYfit[1])<0.1)
2457 // seed[index][jLayer].UseClusters(); //sign gold
2462 if (!cseed[0].IsOK()) {
2464 if (!cseed[1].IsOK()) {
2468 seedparams[registered][0] = cseed[index0].GetX0();
2469 seedparams[registered][1] = cseed[index0].GetYref(0);
2470 seedparams[registered][2] = cseed[index0].GetZref(0);
2471 seedparams[registered][5] = cR;
2472 seedparams[registered][3] = cseed[index0].GetX0() * cR - TMath::Sin(TMath::ATan(cseed[0].GetYref(1)));
2473 seedparams[registered][4] = cseed[index0].GetZref(1)
2474 / TMath::Sqrt(1.0 + cseed[index0].GetYref(1) * cseed[index0].GetYref(1));
2475 seedparams[registered][6] = ns;
2480 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2481 if (!cseed[iLayer].IsOK()) {
2484 if (cseed[iLayer].GetLabels(0) >= 0) {
2485 labels[nlab] = cseed[iLayer].GetLabels(0);
2488 if (cseed[iLayer].GetLabels(1) >= 0) {
2489 labels[nlab] = cseed[iLayer].GetLabels(1);
2493 Freq(nlab,labels,outlab,kFALSE);
2494 Int_t label = outlab[0];
2495 Int_t frequency = outlab[1];
2496 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2497 cseed[iLayer].SetFreq(frequency);
2498 cseed[iLayer].SetC(cR);
2499 cseed[iLayer].SetCC(cC);
2500 cseed[iLayer].SetChi2(chi2TR);
2501 cseed[iLayer].SetChi2Z(chi2ZF);
2505 if (1 || (!isFake)) {
2506 Float_t zvertex = GetZ();
2507 TTreeSRedirector &cstream = *fDebugStreamer;
2508 if (AliTRDReconstructor::StreamLevel() > 0) {
2510 << "isFake=" << isFake
2511 << "Vertex=" << zvertex
2512 << "Rieman2.=" << &rieman2
2513 << "Rieman.=" << &rieman
2521 << "Chi2R=" << chi2R
2522 << "Chi2Z=" << chi2Z
2523 << "Chi2RF=" << chi2RF // Chi2 of trackletes on full track
2524 << "Chi2ZF=" << chi2ZF // Chi2 z on tracklets on full track
2525 << "Chi2ZT2=" << chi2ZT2 // Chi2 z on tracklets on full track - rieman tilt
2526 << "Chi2ZTC=" << chi2ZTC // Chi2 z on tracklets on full track - rieman tilt const
2527 << "Chi2TR=" << chi2TR // Chi2 without vertex constrain
2528 << "Chi2TC=" << chi2TC // Chi2 with vertex constrain
2529 << "C=" << curv // Non constrained - no tilt correction
2530 << "DR=" << dR // DR parameter - tilt correction
2531 << "DCA=" << dca // DCA - tilt correction
2532 << "CR=" << cR // Non constrained curvature - tilt correction
2533 << "CC=" << cC // Constrained curvature
2534 << "Polz0=" << polz0c
2535 << "Polz1=" << polz1c
2536 << "RPolz0=" << rpolz0
2537 << "RPolz1=" << rpolz1
2538 << "Ncl=" << nclusters
2539 << "Nlayers=" << nlayers
2540 << "NUsedS=" << nusedCl
2541 << "NUsed=" << nusedf
2542 << "Findable=" << findable
2544 << "LikePrim=" << likePrim
2545 << "Likechi2C=" << likechi2C
2546 << "Likechi2TR=" << likechi2TR
2547 << "Likezf=" << likezf
2548 << "LikeF=" << seedquality2[registered]
2549 << "S0.=" << &cseed[0]
2550 << "S1.=" << &cseed[1]
2551 << "S2.=" << &cseed[2]
2552 << "S3.=" << &cseed[3]
2553 << "S4.=" << &cseed[4]
2554 << "S5.=" << &cseed[5]
2555 << "SB0.=" << &seedb[0]
2556 << "SB1.=" << &seedb[1]
2557 << "SB2.=" << &seedb[2]
2558 << "SB3.=" << &seedb[3]
2559 << "SB4.=" << &seedb[4]
2560 << "SB5.=" << &seedb[5]
2561 << "Label=" << label
2562 << "Freq=" << frequency
2563 << "sLayer=" << sLayer
2568 if (registered<kMaxSeed - 1) {
2570 cseed = seed[registered];
2573 } // End of loop over layer 1
2575 } // End of loop over layer 0
2577 } // End of loop over layer 3
2579 } // End of loop over seeding time bins
2581 AliDebug(2, Form("N registered = %d", registered));
2587 TMath::Sort(registered,seedquality2,sort,kTRUE);
2588 Bool_t signedseed[kMaxSeed];
2589 for (Int_t i = 0; i < registered; i++) {
2590 signedseed[i] = kFALSE;
2593 for (Int_t iter = 0; iter < 5; iter++) {
2595 for (Int_t iseed = 0; iseed < registered; iseed++) {
2597 Int_t index = sort[iseed];
2598 if (signedseed[index]) {
2601 Int_t labelsall[1000];
2602 Int_t nlabelsall = 0;
2603 Int_t naccepted = 0;;
2604 Int_t sLayer = seedlayer[index];
2610 for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
2612 if (TMath::Abs(seed[index][jLayer].GetYref(0) / xcl[jLayer]) < 0.15) {
2615 if (seed[index][jLayer].IsOK()) {
2616 seed[index][jLayer].UpdateUsed();
2617 ncl +=seed[index][jLayer].GetN2();
2618 nused +=seed[index][jLayer].GetNUsed();
2621 for (Int_t itime = 0; itime < 25; itime++) {
2622 if (seed[index][jLayer].IsUsable(itime)) {
2624 for (Int_t ilab = 0; ilab < 3; ilab++) {
2625 Int_t tindex = seed[index][jLayer].GetClusters(itime)->GetLabel(ilab);
2627 labelsall[nlabelsall] = tindex;
2645 if (TMath::Log(0.000000001+seedquality2[index]) < -5.0) {
2651 if (nlayers < findable) {
2654 if (TMath::Log(0.000000001+seedquality2[index]) < -4.0) {
2660 if ((nlayers == findable) ||
2664 if (TMath::Log(0.000000001+seedquality2[index]) < -6.0) {
2670 if (TMath::Log(0.000000001+seedquality2[index]) < -5.0) {
2676 if (TMath::Log(0.000000001+seedquality2[index]) - nused/(nlayers-3.0) < -15.0) {
2681 signedseed[index] = kTRUE;
2686 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2687 if (seed[index][iLayer].IsOK()) {
2688 if (seed[index][iLayer].GetLabels(0) >= 0) {
2689 labels[nlab] = seed[index][iLayer].GetLabels(0);
2692 if (seed[index][iLayer].GetLabels(1) >= 0) {
2693 labels[nlab] = seed[index][iLayer].GetLabels(1);
2698 Freq(nlab,labels,outlab,kFALSE);
2699 Int_t label = outlab[0];
2700 Int_t frequency = outlab[1];
2701 Freq(nlabelsall,labelsall,outlab,kFALSE);
2702 Int_t label1 = outlab[0];
2703 Int_t label2 = outlab[2];
2704 Float_t fakeratio = (naccepted - outlab[1]) / Float_t(naccepted);
2705 Float_t ratio = Float_t(nused) / Float_t(ncl);
2707 for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
2708 if ((seed[index][jLayer].IsOK()) &&
2709 (TMath::Abs(seed[index][jLayer].GetYfit(1) - seed[index][jLayer].GetYfit(1)) < 0.2)) {
2710 seed[index][jLayer].UseClusters(); // Sign gold
2715 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.
2716 TTreeSRedirector &cstream = *fDebugStreamer;
2718 AliDebug(2, Form("Register seed %d", index));
2723 AliTRDtrack *track = RegisterSeed(seed[index],seedparams[index]);
2726 AliWarning(Form("register seed returned 0%x", track));
2730 AliESDtrack esdtrack;
2731 esdtrack.UpdateTrackParams(track,AliESDtrack::kTRDout);
2732 esdtrack.SetLabel(label);
2733 esd->AddTrack(&esdtrack);
2734 TTreeSRedirector &cstream = *fDebugStreamer;
2735 if (AliTRDReconstructor::StreamLevel() > 0) {
2737 << "EventNrInFile=" << eventNrInFile
2738 << "ESD.=" << &esdtrack
2740 << "trdback.=" << track
2745 if (AliTRDReconstructor::StreamLevel() > 0) {
2748 << "Track.=" << track
2749 << "Like=" << seedquality[index]
2750 << "LikeF=" << seedquality2[index]
2751 << "S0.=" << &seed[index][0]
2752 << "S1.=" << &seed[index][1]
2753 << "S2.=" << &seed[index][2]
2754 << "S3.=" << &seed[index][3]
2755 << "S4.=" << &seed[index][4]
2756 << "S5.=" << &seed[index][5]
2757 << "Label=" << label
2758 << "Label1=" << label1
2759 << "Label2=" << label2
2760 << "FakeRatio=" << fakeratio
2761 << "Freq=" << frequency
2763 << "Nlayers=" << nlayers
2764 << "Findable=" << findable
2765 << "NUsed=" << nused
2766 << "sLayer=" << sLayer
2767 << "EventNrInFile=" << eventNrInFile
2775 } // End of loop over sectors
2781 //_____________________________________________________________________________
2782 Int_t AliTRDtrackerHLT::ReadClusters(TObjArray *array, TTree *clusterTree) const
2785 // Reads AliTRDclusters (option >= 0) or AliTRDrecPoints (option < 0)
2786 // from the file. The names of the cluster tree and branches
2787 // should match the ones used in AliTRDclusterizer::WriteClusters()
2790 Int_t nsize = Int_t(clusterTree->GetTotBytes() / (sizeof(AliTRDcluster)));
2791 TObjArray *clusterArray = new TObjArray(nsize+1000);
2793 TBranch *branch = clusterTree->GetBranch("TRDcluster");
2795 AliError("Can't get the branch !");
2798 branch->SetAddress(&clusterArray);
2800 // Loop through all entries in the tree
2801 Int_t nEntries = (Int_t) clusterTree->GetEntries();
2803 AliTRDcluster *c = 0;
2804 for (Int_t iEntry = 0; iEntry < nEntries; iEntry++) {
2807 nbytes += clusterTree->GetEvent(iEntry);
2809 // Get the number of points in the detector
2810 Int_t nCluster = clusterArray->GetEntriesFast();
2812 // Loop through all TRD digits
2813 for (Int_t iCluster = 0; iCluster < nCluster; iCluster++) {
2814 c = (AliTRDcluster *) clusterArray->UncheckedAt(iCluster);
2815 AliTRDcluster *co = c;
2817 clusterArray->RemoveAt(iCluster);
2822 delete clusterArray;
2828 //_____________________________________________________________________________
2829 Bool_t AliTRDtrackerHLT::GetTrackPoint(Int_t index, AliTrackPoint &p) const
2832 // Get track space point with index i
2833 // Origin: C.Cheshkov
2836 AliTRDcluster *cl = (AliTRDcluster *) fClusters->UncheckedAt(index);
2837 Int_t idet = cl->GetDetector();
2838 Int_t isector = fGeom->GetSector(idet);
2839 Int_t ichamber = fGeom->GetChamber(idet);
2840 Int_t iplan = fGeom->GetPlane(idet);
2842 local[0] = GetX(isector,iplan,cl->GetLocalTimeBin());
2843 local[1] = cl->GetY();
2844 local[2] = cl->GetZ();
2846 fGeom->RotateBack(idet,local,global);
2847 p.SetXYZ(global[0],global[1],global[2]);
2848 #ifdef HAVNT_ALIGEOMMANAGER
2849 // this was introcuced for backward compatibility with AliRoot v4-05-Release
2850 AliAlignObj::ELayerID iLayer = AliAlignObj::kTRD1;
2853 iLayer = AliAlignObj::kTRD1;
2856 iLayer = AliAlignObj::kTRD2;
2859 iLayer = AliAlignObj::kTRD3;
2862 iLayer = AliAlignObj::kTRD4;
2865 iLayer = AliAlignObj::kTRD5;
2868 iLayer = AliAlignObj::kTRD6;
2871 Int_t modId = isector * fGeom->Ncham() + ichamber;
2872 UShort_t volid = AliAlignObj::LayerToVolUID(iLayer,modId);
2873 #else //HAVNT_ALIGEOMMANAGER
2874 AliGeomManager::ELayerID iLayer = AliGeomManager::kTRD1;
2877 iLayer = AliGeomManager::kTRD1;
2880 iLayer = AliGeomManager::kTRD2;
2883 iLayer = AliGeomManager::kTRD3;
2886 iLayer = AliGeomManager::kTRD4;
2889 iLayer = AliGeomManager::kTRD5;
2892 iLayer = AliGeomManager::kTRD6;
2895 Int_t modId = isector * fGeom->Ncham() + ichamber;
2896 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,modId);
2897 #endif //HAVNT_ALIGEOMMANAGER
2898 p.SetVolumeID(volid);
2904 //_____________________________________________________________________________
2905 void AliTRDtrackerHLT::CookLabel(AliKalmanTrack *pt, Float_t wrong) const
2908 // This cooks a label. Mmmmh, smells good...
2911 Int_t label = 123456789;
2915 Int_t ncl = pt->GetNumberOfClusters();
2917 const Int_t kRange = fTrSec[0]->GetOuterTimeBin() + 1;
2921 Int_t **s = new Int_t* [kRange];
2922 for (i = 0; i < kRange; i++) {
2923 s[i] = new Int_t[2];
2925 for (i = 0; i < kRange; i++) {
2934 for (i = 0; i < ncl; i++) {
2935 index = pt->GetClusterIndex(i);
2936 AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index);
2942 for (i = 0; i < ncl; i++) {
2943 index = pt->GetClusterIndex(i);
2944 AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index);
2945 for (Int_t k = 0; k < 3; k++) {
2946 label = c->GetLabel(k);
2947 labelAdded = kFALSE;
2950 while ((!labelAdded) && (j < kRange)) {
2951 if ((s[j][0] == label) ||
2954 s[j][1] = s[j][1] + 1;
2966 for (i = 0; i < kRange; i++) {
2967 if (s[i][1] > max) {
2973 for (i = 0; i < kRange; i++) {
2979 if ((1.0 - Float_t(max)/ncl) > wrong) {
2983 pt->SetLabel(label);
2987 //_____________________________________________________________________________
2988 void AliTRDtrackerHLT::UseClusters(const AliKalmanTrack *t, Int_t from) const
2991 // Use clusters, but don't abuse them!
2994 const Float_t kmaxchi2 = 18;
2995 const Float_t kmincl = 10;
2997 AliTRDtrack *track = (AliTRDtrack *) t;
2999 Int_t ncl = t->GetNumberOfClusters();
3000 for (Int_t i = from; i < ncl; i++) {
3001 Int_t index = t->GetClusterIndex(i);
3002 AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index);
3003 Int_t iplane = fGeom->GetPlane(c->GetDetector());
3004 if (track->GetTracklets(iplane).GetChi2() > kmaxchi2) {
3007 if (track->GetTracklets(iplane).GetN() < kmincl) {
3010 if (!(c->IsUsed())) {
3017 //_____________________________________________________________________________
3018 Double_t AliTRDtrackerHLT::ExpectedSigmaY2(Double_t , Double_t , Double_t ) const
3021 // Parametrised "expected" error of the cluster reconstruction in Y
3024 Double_t s = 0.08 * 0.08;
3029 //_____________________________________________________________________________
3030 Double_t AliTRDtrackerHLT::ExpectedSigmaZ2(Double_t , Double_t ) const
3033 // Parametrised "expected" error of the cluster reconstruction in Z
3036 Double_t s = 9.0 * 9.0 / 12.0;
3041 //_____________________________________________________________________________
3042 Double_t AliTRDtrackerHLT::GetX(Int_t sector, Int_t plane, Int_t localTB) const
3045 // Returns radial position which corresponds to time bin <localTB>
3046 // in tracking sector <sector> and plane <plane>
3049 Int_t index = fTrSec[sector]->CookTimeBinIndex(plane, localTB);
3050 Int_t pl = fTrSec[sector]->GetLayerNumber(index);
3052 return fTrSec[sector]->GetLayer(pl)->GetX();
3056 //_____________________________________________________________________________
3057 AliTRDpropagationLayerHLT
3058 ::AliTRDpropagationLayerHLT(Double_t x, Double_t dx, Double_t rho
3059 , Double_t radLength, Int_t tbIndex, Int_t plane)
3068 ,fTimeBinIndex(tbIndex)
3081 // AliTRDpropagationLayerHLT constructor
3084 for (Int_t i = 0; i < (Int_t) AliTRDtrackingHLT::kZones; i++) {
3089 if (fTimeBinIndex >= 0) {
3090 fClusters = new AliTRDcluster*[AliTRDtrackingHLT::kMaxClusterPerTimeBin];
3091 fIndex = new UInt_t[AliTRDtrackingHLT::kMaxClusterPerTimeBin];
3094 for (Int_t i = 0; i < 5; i++) {
3095 fIsHole[i] = kFALSE;
3100 //_____________________________________________________________________________
3101 void AliTRDpropagationLayerHLT
3102 ::SetHole(Double_t Zmax, Double_t Ymax, Double_t rho
3103 , Double_t radLength, Double_t Yc, Double_t Zc)
3106 // Sets hole in the layer
3115 fHoleX0 = radLength;
3119 //_____________________________________________________________________________
3120 AliTRDtrackingSectorHLT
3121 ::AliTRDtrackingSectorHLT(AliTRDgeometry *geo, Int_t gs)
3127 // AliTRDtrackingSectorHLT Constructor
3130 AliTRDpadPlane *padPlane = 0;
3131 AliTRDpropagationLayerHLT *ppl = 0;
3133 // Get holes description from geometry
3134 Bool_t holes[AliTRDgeometry::kNcham];
3135 for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) {
3136 holes[icham] = fGeom->IsHole(0,icham,gs);
3139 for (UInt_t i = 0; i < AliTRDtrackingHLT::kMaxTimeBinIndex; i++) {
3140 fTimeBinIndex[i] = -1;
3148 // Add layers for each of the planes
3149 Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region
3150 //Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region
3152 const Int_t kNchambers = AliTRDgeometry::Ncham();
3155 Double_t ymaxsensitive = 0;
3156 Double_t *zc = new Double_t[kNchambers];
3157 Double_t *zmax = new Double_t[kNchambers];
3158 Double_t *zmaxsensitive = new Double_t[kNchambers];
3160 AliTRDCommonParam *commonParam = AliTRDCommonParam::Instance();
3162 AliErrorGeneral("AliTRDtrackingSectorHLT::Ctor"
3163 ,"Could not get common parameters\n");
3167 for (Int_t plane = 0; plane < AliTRDgeometry::Nplan(); plane++) {
3169 ymax = fGeom->GetChamberWidth(plane) / 2.0;
3170 padPlane = fGeom->GetPadPlane(plane,0);
3171 ymaxsensitive = (padPlane->GetColSize(1) * padPlane->GetNcols() - 4.0) / 2.0;
3173 for (Int_t ch = 0; ch < kNchambers; ch++) {
3174 zmax[ch] = fGeom->GetChamberLength(plane,ch) / 2.0;
3175 Float_t pad = padPlane->GetRowSize(1);
3176 Float_t row0 = fGeom->GetRow0(plane,ch,0);
3177 Int_t nPads = fGeom->GetRowMax(plane,ch,0);
3178 zmaxsensitive[ch] = Float_t(nPads) * pad / 2.0;
3179 zc[ch] = -(pad * nPads) / 2.0 + row0;
3182 dx = AliTRDcalibDB::Instance()->GetVdrift(0,0,0)
3183 / commonParam->GetSamplingFrequency();
3184 rho = 0.00295 * 0.85; //????
3187 Double_t x0 = (Double_t) AliTRDgeometry::GetTime0(plane);
3188 //Double_t xbottom = x0 - dxDrift;
3189 //Double_t xtop = x0 + dxAmp;
3191 Int_t nTimeBins = AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
3192 for (Int_t iTime = 0; iTime < nTimeBins; iTime++) {
3194 Double_t xlayer = iTime * dx - dxAmp;
3195 //if (xlayer<0) xlayer = dxAmp / 2.0;
3198 tbIndex = CookTimeBinIndex(plane,iTime);
3199 ppl = new AliTRDpropagationLayerHLT(x,dx,rho,radLength,tbIndex,plane);
3200 ppl->SetYmax(ymax,ymaxsensitive);
3201 ppl->SetZ(zc,zmax,zmaxsensitive);
3202 ppl->SetHoles(holes);
3213 delete [] zmaxsensitive;
3217 //_____________________________________________________________________________
3218 AliTRDtrackingSectorHLT
3219 ::AliTRDtrackingSectorHLT(const AliTRDtrackingSectorHLT &/*t*/)
3230 //_____________________________________________________________________________
3231 Int_t AliTRDtrackingSectorHLT
3232 ::CookTimeBinIndex(Int_t plane, Int_t localTB) const
3235 // depending on the digitization parameters calculates "global"
3236 // time bin index for timebin <localTB> in plane <plane>
3240 Int_t tbPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
3241 Int_t gtb = (plane+1) * tbPerPlane - localTB - 1;
3253 //_____________________________________________________________________________
3254 void AliTRDtrackingSectorHLT
3255 ::MapTimeBinLayers()
3258 // For all sensitive time bins sets corresponding layer index
3259 // in the array fTimeBins
3264 for (Int_t i = 0; i < fN; i++) {
3266 index = fLayers[i]->GetTimeBinIndex();
3271 if (index >= (Int_t) AliTRDtrackingHLT::kMaxTimeBinIndex) {
3272 //AliWarning(Form("Index %d exceeds allowed maximum of %d!\n"
3273 // ,index,AliTRDtrackingHLT::kMaxTimeBinIndex-1));
3277 fTimeBinIndex[index] = i;
3283 //_____________________________________________________________________________
3284 Int_t AliTRDtrackingSectorHLT
3285 ::GetLayerNumber(Double_t x) const
3288 // Returns the number of time bin which in radial position is closest to <x>
3291 if (x >= fLayers[fN-1]->GetX()) {
3294 if (x <= fLayers[ 0]->GetX()) {
3300 Int_t m = (b + e) / 2;
3302 for ( ; b < e; m = (b + e) / 2) {
3303 if (x > fLayers[m]->GetX()) {
3311 if (TMath::Abs(x - fLayers[m]->GetX()) > TMath::Abs(x - fLayers[m+1]->GetX())) {
3320 //_____________________________________________________________________________
3321 Int_t AliTRDtrackingSectorHLT
3322 ::GetInnerTimeBin() const
3325 // Returns number of the innermost SENSITIVE propagation layer
3328 return GetLayerNumber(0);
3332 //_____________________________________________________________________________
3333 Int_t AliTRDtrackingSectorHLT
3334 ::GetOuterTimeBin() const
3337 // Returns number of the outermost SENSITIVE time bin
3340 return GetLayerNumber(GetNumberOfTimeBins() - 1);
3344 //_____________________________________________________________________________
3345 Int_t AliTRDtrackingSectorHLT
3346 ::GetNumberOfTimeBins() const
3349 // Returns number of SENSITIVE time bins
3355 for (tb = AliTRDtrackingHLT::kMaxTimeBinIndex - 1; tb >= 0; tb--) {
3356 layer = GetLayerNumber(tb);
3366 //_____________________________________________________________________________
3367 void AliTRDtrackingSectorHLT
3368 ::InsertLayer(AliTRDpropagationLayerHLT *pl)
3371 // Insert layer <pl> in fLayers array.
3372 // Layers are sorted according to X coordinate.
3375 if (fN == ((Int_t) AliTRDtrackingHLT::kMaxLayersPerSector)) {
3376 //AliWarning("Too many layers !\n");
3385 Int_t i = Find(pl->GetX());
3387 memmove(fLayers+i+1,fLayers+i,(fN-i)*sizeof(AliTRDpropagationLayerHLT*));
3394 //_____________________________________________________________________________
3395 Int_t AliTRDtrackingSectorHLT
3396 ::Find(Double_t x) const
3399 // Returns index of the propagation layer nearest to X
3402 if (x <= fLayers[0]->GetX()) {
3406 if (x > fLayers[fN-1]->GetX()) {
3412 Int_t m = (b + e) / 2;
3414 for (; b < e; m = (b + e) / 2) {
3415 if (x > fLayers[m]->GetX()) {
3427 //_____________________________________________________________________________
3428 void AliTRDpropagationLayerHLT
3429 ::SetZ(Double_t *center, Double_t *w, Double_t *wsensitive )
3432 // set centers and the width of sectors
3435 for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) {
3436 fZc[icham] = center[icham];
3437 fZmax[icham] = w[icham];
3438 fZmaxSensitive[icham] = wsensitive[icham];
3443 //_____________________________________________________________________________
3444 void AliTRDpropagationLayerHLT::SetHoles(Bool_t *holes)
3447 // set centers and the width of sectors
3452 for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) {
3453 fIsHole[icham] = holes[icham];
3461 //_____________________________________________________________________________
3462 void AliTRDpropagationLayerHLT
3463 ::InsertCluster(AliTRDcluster *c, UInt_t index)
3466 // Insert cluster in cluster array.
3467 // Clusters are sorted according to Y coordinate.
3470 if (fTimeBinIndex < 0) {
3471 //AliWarning("Attempt to insert cluster into non-sensitive time bin!\n");
3475 if (fN == (Int_t) AliTRDtrackingHLT::kMaxClusterPerTimeBin) {
3476 //AliWarning("Too many clusters !\n");
3482 fClusters[fN++] = c;
3486 Int_t i = Find(c->GetY());
3487 memmove(fClusters+i+1,fClusters+i,(fN-i)*sizeof(AliTRDcluster*));
3488 memmove(fIndex +i+1,fIndex +i,(fN-i)*sizeof(UInt_t));
3495 //_____________________________________________________________________________
3496 Int_t AliTRDpropagationLayerHLT::Find(Float_t y) const
3499 // Returns index of the cluster nearest in Y
3505 if (y <= fClusters[0]->GetY()) {
3508 if (y > fClusters[fN-1]->GetY()) {
3514 Int_t m = (b + e) / 2;
3516 for ( ; b < e; m = (b + e) / 2) {
3517 if (y > fClusters[m]->GetY()) {
3529 //_____________________________________________________________________________
3530 Int_t AliTRDpropagationLayerHLT
3531 ::FindNearestCluster(Float_t y, Float_t z, Float_t maxroad
3532 , Float_t maxroadz) const
3535 // Returns index of the cluster nearest to the given y,z
3540 Float_t mindist = maxroad;
3542 for (Int_t i = Find(y-maxroad); i < maxn; i++) {
3543 AliTRDcluster *c = (AliTRDcluster *) (fClusters[i]);
3544 Float_t ycl = c->GetY();
3545 if (ycl > (y + maxroad)) {
3548 if (TMath::Abs(c->GetZ() - z) > maxroadz) {
3551 if (TMath::Abs(ycl - y) < mindist) {
3552 mindist = TMath::Abs(ycl - y);
3561 //_____________________________________________________________________________
3562 Double_t AliTRDtrackerHLT::GetTiltFactor(const AliTRDcluster *c)
3565 // Returns correction factor for tilted pads geometry
3568 Int_t det = c->GetDetector();
3569 Int_t plane = fGeom->GetPlane(det);
3570 AliTRDpadPlane *padPlane = fGeom->GetPadPlane(plane,0);
3571 Double_t h01 = TMath::Tan(-TMath::Pi() / 180.0 * padPlane->GetTiltingAngle());
3581 //_____________________________________________________________________________
3582 void AliTRDtrackerHLT::CookdEdxTimBin(AliTRDtrack &TRDtrack)
3585 // This is setting fdEdxPlane and fTimBinPlane
3586 // Sums up the charge in each plane for track TRDtrack and also get the
3587 // Time bin for Max. Cluster
3588 // Prashant Shukla (shukla@physi.uni-heidelberg.de)
3591 Double_t clscharge[AliESDtrack::kNPlane][AliESDtrack::kNSlice];
3592 Double_t maxclscharge[AliESDtrack::kNPlane];
3593 Int_t nCluster[AliESDtrack::kNPlane][AliESDtrack::kNSlice];
3594 Int_t timebin[AliESDtrack::kNPlane];
3596 // Initialization of cluster charge per plane.
3597 for (Int_t iPlane = 0; iPlane < AliESDtrack::kNPlane; iPlane++) {
3598 for (Int_t iSlice = 0; iSlice < AliESDtrack::kNSlice; iSlice++) {
3599 clscharge[iPlane][iSlice] = 0.0;
3600 nCluster[iPlane][iSlice] = 0;
3604 // Initialization of cluster charge per plane.
3605 for (Int_t iPlane = 0; iPlane < AliESDtrack::kNPlane; iPlane++) {
3606 timebin[iPlane] = -1;
3607 maxclscharge[iPlane] = 0.0;
3610 // Loop through all clusters associated to track TRDtrack
3611 Int_t nClus = TRDtrack.GetNumberOfClusters(); // from Kalmantrack
3612 for (Int_t iClus = 0; iClus < nClus; iClus++) {
3613 Double_t charge = TRDtrack.GetClusterdQdl(iClus);
3614 Int_t index = TRDtrack.GetClusterIndex(iClus);
3615 AliTRDcluster *pTRDcluster = (AliTRDcluster *) GetCluster(index);
3619 Int_t tb = pTRDcluster->GetLocalTimeBin();
3623 Int_t detector = pTRDcluster->GetDetector();
3624 Int_t iPlane = fGeom->GetPlane(detector);
3625 if (iPlane >= AliESDtrack::kNPlane) {
3626 AliError(Form("Wrong plane %d",iPlane));
3629 Int_t iSlice = tb * AliESDtrack::kNSlice
3630 / AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
3631 if (iSlice >= AliESDtrack::kNSlice) {
3632 AliError(Form("Wrong slice %d",iSlice));
3635 clscharge[iPlane][iSlice] = clscharge[iPlane][iSlice] + charge;
3636 if (charge > maxclscharge[iPlane]) {
3637 maxclscharge[iPlane] = charge;
3638 timebin[iPlane] = tb;
3640 nCluster[iPlane][iSlice]++;
3641 } // End of loop over cluster
3643 // Setting the fdEdxPlane and fTimBinPlane variabales
3644 Double_t totalCharge = 0.0;
3646 for (Int_t iPlane = 0; iPlane < AliESDtrack::kNPlane; iPlane++) {
3647 for (Int_t iSlice = 0; iSlice < AliESDtrack::kNSlice; iSlice++) {
3648 if (nCluster[iPlane][iSlice]) {
3649 clscharge[iPlane][iSlice] /= nCluster[iPlane][iSlice];
3651 TRDtrack.SetPIDsignals(clscharge[iPlane][iSlice],iPlane,iSlice);
3652 totalCharge = totalCharge+clscharge[iPlane][iSlice];
3654 TRDtrack.SetPIDTimBin(timebin[iPlane],iPlane);
3657 // Still needed ????
3659 // Int_t nc=TRDtrack.GetNumberOfClusters();
3661 // for (i=0; i<nc; i++) dedx += TRDtrack.GetClusterdQdl(i);
3663 // for (Int_t iPlane = 0; iPlane < kNPlane; iPlane++) {
3664 // TRDtrack.SetPIDsignals(dedx, iPlane);
3665 // TRDtrack.SetPIDTimBin(timbin[iPlane], iPlane);
3670 //_____________________________________________________________________________
3671 Int_t AliTRDtrackerHLT::FindClusters(Int_t sector, Int_t t0, Int_t t1
3672 , AliTRDtrack *track
3673 , Int_t *clusters, AliTRDtracklet &tracklet)
3677 // Try to find nearest clusters to the track in timebins from t0 to t1
3679 // Correction coeficients - depend on TRD parameters - to be changed accordingly
3685 Double_t xmean = 0.0; // Reference x
3686 Double_t dz[10][100];
3687 Double_t dy[10][100];
3691 Int_t indexes[10][100]; // Indexes of the clusters in the road
3692 Int_t best[10][100]; // Index of best matching cluster
3693 AliTRDcluster *cl[10][100]; // Pointers to the clusters in the road
3695 for (Int_t it = 0; it < 100; it++) {
3702 for (Int_t ih = 0; ih < 10;ih++) {
3703 indexes[ih][it] = -2; // Reset indexes1
3705 dz[ih][it] = -100.0;
3706 dy[ih][it] = -100.0;
3711 Double_t x0 = track->GetX();
3712 Double_t sigmaz = TMath::Sqrt(TMath::Abs(track->GetSigmaZ2()));
3717 Int_t detector = -1;
3718 Float_t padlength = 0.0;
3719 AliTRDtrack track2(* track);
3720 Float_t snpy = track->GetSnp();
3721 Float_t tany = TMath::Sqrt(snpy*snpy / (1.0 - snpy*snpy));
3726 Double_t sy2 = ExpectedSigmaY2(x0,track->GetTgl(),track->GetSignedPt());
3727 Double_t sz2 = ExpectedSigmaZ2(x0,track->GetTgl());
3728 Double_t road = 15.0 * TMath::Sqrt(track->GetSigmaY2() + sy2);
3734 for (Int_t it = 0; it < t1-t0; it++) {
3736 Double_t maxChi2[2] = { fgkMaxChi2, fgkMaxChi2 };
3737 AliTRDpropagationLayerHLT &timeBin = *(fTrSec[sector]->GetLayer(it+t0));
3739 continue; // No indexes1
3742 Int_t maxn = timeBin;
3743 x[it] = timeBin.GetX();
3744 track2.PropagateTo(x[it]);
3745 yt[it] = track2.GetY();
3746 zt[it] = track2.GetZ();
3748 Double_t y = yt[it];
3749 Double_t z = zt[it];
3750 Double_t chi2 = 1000000.0;
3754 // Find 2 nearest cluster at given time bin
3756 int checkPoint[4] = {0,0,0,0};
3757 double minY = 123456789;
3758 double minD[2] = {1,1};
3760 for (Int_t i = timeBin.Find(y - road); i < maxn; i++) {
3761 //for (Int_t i = 0; i < maxn; i++) {
3763 AliTRDcluster *c = (AliTRDcluster *) (timeBin[i]);
3764 h01 = GetTiltFactor(c);
3766 Int_t det = c->GetDetector();
3767 plane = fGeom->GetPlane(det);
3768 padlength = TMath::Sqrt(c->GetSigmaZ2() * 12.0);
3771 //if (c->GetLocalTimeBin()==0) continue;
3772 if (c->GetY() > (y + road)) {
3776 fHDeltaX->Fill(c->GetX() - x[it]);
3777 //printf("%f\t%f\t%f \n", c->GetX(), x[it], c->GetX()-x[it]);
3779 if (TMath::Abs(c->GetY()-y) < TMath::Abs(minY)) {
3781 minD[0] = c->GetY()-y;
3782 minD[1] = c->GetZ()-z;
3787 fHMinZ->Fill(c->GetZ() - z);
3788 if ((c->GetZ() - z) * (c->GetZ() - z) > 2 * (12.0 * sz2)) {
3793 Double_t dist = TMath::Abs(c->GetZ() - z);
3794 if (dist > (0.5 * padlength + 6.0 * sigmaz)) { // 0.5
3795 continue; // 6 sigma boundary cut
3799 Double_t cost = 0.0;
3800 // Sigma boundary cost function
3801 if (dist> (0.5 * padlength - sigmaz)){
3802 cost = (dist - 0.5*padlength) / (2.0 * sigmaz);
3804 cost = (cost + 1.0) * (cost + 1.0);
3810 //Int_t label = TMath::Abs(track->GetLabel());
3811 //if (c->GetLabel(0)!=label && c->GetLabel(1)!=label&&c->GetLabel(2)!=label) continue;
3812 chi2 = track2.GetPredictedChi2(c,h01) + cost;
3815 if (chi2 > maxChi2[1]) {
3820 detector = c->GetDetector();
3821 // Store the clusters in the road
3822 for (Int_t ih = 2; ih < 9; ih++) {
3823 if (cl[ih][it] == 0) {
3825 indexes[ih][it] = timeBin.GetIndex(i); // Index - 9 - reserved for outliers
3830 if (chi2 < maxChi2[0]) {
3831 maxChi2[1] = maxChi2[0];
3833 indexes[1][it] = indexes[0][it];
3834 cl[1][it] = cl[0][it];
3835 indexes[0][it] = timeBin.GetIndex(i);
3841 indexes[1][it] = timeBin.GetIndex(i);
3845 for(int iCheckPoint = 0; iCheckPoint<4; iCheckPoint++)
3846 fHFindCl[iCheckPoint]->Fill(checkPoint[iCheckPoint]);
3848 if (checkPoint[3]) {
3849 if (track->GetSignedPt() > 0) fHMinYPos->Fill(minY);
3850 else fHMinYNeg->Fill(minY);
3852 fHMinD->Fill(minD[0], minD[1]);
3865 xmean /= Float_t(nfound); // Middle x
3866 track2.PropagateTo(xmean); // Propagate track to the center
3869 // Choose one of the variants
3874 Double_t sumdy = 0.0;
3875 Double_t sumdy2 = 0.0;
3876 Double_t sumx = 0.0;
3877 Double_t sumxy = 0.0;
3878 Double_t sumx2 = 0.0;
3879 Double_t mpads = 0.0;
3885 Double_t moffset[10]; // Mean offset
3886 Double_t mean[10]; // Mean value
3887 Double_t angle[10]; // Angle
3889 Double_t smoffset[10]; // Sigma of mean offset
3890 Double_t smean[10]; // Sigma of mean value
3891 Double_t sangle[10]; // Sigma of angle
3892 Double_t smeanangle[10]; // Correlation
3894 Double_t sigmas[10];
3895 Double_t tchi2s[10]; // Chi2s for tracklet
3897 for (Int_t it = 0; it < 10; it++) {
3903 moffset[it] = 0.0; // Mean offset
3904 mean[it] = 0.0; // Mean value
3905 angle[it] = 0.0; // Angle
3907 smoffset[it] = 1.0e5; // Sigma of mean offset
3908 smean[it] = 1.0e5; // Sigma of mean value
3909 sangle[it] = 1.0e5; // Sigma of angle
3910 smeanangle[it] = 0.0; // Correlation
3913 tchi2s[it] = 1.0e5; // Chi2s for tracklet
3920 for (Int_t it = 0; it < t1 - t0; it++) {
3924 for (Int_t dt = -3; dt <= 3; dt++) {
3928 if (it+dt > t1-t0) {
3931 if (!cl[0][it+dt]) {
3934 zmean[it] += cl[0][it+dt]->GetZ();
3937 zmean[it] /= nmean[it];
3940 for (Int_t it = 0; it < t1 - t0; it++) {
3944 for (Int_t ih = 0; ih < 10; ih++) {
3945 dz[ih][it] = -100.0;
3946 dy[ih][it] = -100.0;
3950 Double_t xcluster = cl[ih][it]->GetX();
3953 track2.GetProlongation(xcluster,ytrack,ztrack );
3954 dz[ih][it] = cl[ih][it]->GetZ()- ztrack; // Calculate distance from track in z
3955 dy[ih][it] = cl[ih][it]->GetY() + dz[ih][it]*h01 - ytrack; // and in y
3962 if ((TMath::Abs(cl[0][it]->GetZ()-zmean[it]) > padlength * 0.8) &&
3964 if (TMath::Abs(cl[1][it]->GetZ()-zmean[it]) < padlength * 0.5) {
3972 // Iterative choice of "best path"
3974 Int_t label = TMath::Abs(track->GetLabel());
3977 for (Int_t iter = 0; iter < 9; iter++) {
3992 for (Int_t it = 0; it < t1 - t0; it++) {
3994 if (!cl[best[iter][it]][it]) {
3998 // Calculates pad-row changes
3999 Double_t zbefore = cl[best[iter][it]][it]->GetZ();
4000 Double_t zafter = cl[best[iter][it]][it]->GetZ();
4001 for (Int_t itd = it - 1; itd >= 0; itd--) {
4002 if (cl[best[iter][itd]][itd]) {
4003 zbefore = cl[best[iter][itd]][itd]->GetZ();
4007 for (Int_t itd = it + 1; itd < t1 - t0; itd++) {
4008 if (cl[best[iter][itd]][itd]) {
4009 zafter = cl[best[iter][itd]][itd]->GetZ();
4013 if ((TMath::Abs(cl[best[iter][it]][it]->GetZ()-zbefore) > 0.1) &&
4014 (TMath::Abs(cl[best[iter][it]][it]->GetZ()- zafter) > 0.1)) {
4018 Double_t dx = x[it]-xmean; // Distance to reference x
4019 sumz += cl[best[iter][it]][it]->GetZ();
4021 sumdy += dy[best[iter][it]][it];
4022 sumdy2 += dy[best[iter][it]][it]*dy[best[iter][it]][it];
4025 sumxy += dx*dy[best[iter][it]][it];
4026 mpads += cl[best[iter][it]][it]->GetNPads();
4027 if ((cl[best[iter][it]][it]->GetLabel(0) == label) ||
4028 (cl[best[iter][it]][it]->GetLabel(1) == label) ||
4029 (cl[best[iter][it]][it]->GetLabel(2) == label)) {
4039 // calculates line parameters
4041 Double_t det = sum*sumx2 - sumx*sumx;
4042 angle[iter] = (sum*sumxy - sumx*sumdy) / det;
4043 mean[iter] = (sumx2*sumdy - sumx*sumxy) / det;
4044 meanz[iter] = sumz / sum;
4045 moffset[iter] = sumdy / sum;
4046 mpads /= sum; // Mean number of pads
4048 Double_t sigma2 = 0.0; // Normalized residuals - for line fit
4049 Double_t sigma1 = 0.0; // Normalized residuals - constant fit
4051 for (Int_t it = 0; it < t1 - t0; it++) {
4052 if (!cl[best[iter][it]][it]) {
4055 Double_t dx = x[it] - xmean;
4056 Double_t ytr = mean[iter] + angle[iter] * dx;
4057 sigma2 += (dy[best[iter][it]][it] - ytr)
4058 * (dy[best[iter][it]][it] - ytr);
4059 sigma1 += (dy[best[iter][it]][it] - moffset[iter])
4060 * (dy[best[iter][it]][it] - moffset[iter]);
4063 sigma2 /= (sum - 2); // Normalized residuals
4064 sigma1 /= (sum - 1); // Normalized residuals
4065 smean[iter] = sigma2 * (sumx2 / det); // Estimated error2 of mean
4066 sangle[iter] = sigma2 * ( sum / det); // Estimated error2 of angle
4067 smeanangle[iter] = sigma2 * (-sumx / det); // Correlation
4068 sigmas[iter] = TMath::Sqrt(sigma1);
4069 smoffset[iter] = (sigma1 / sum) + 0.01*0.01; // Sigma of mean offset + unisochronity sigma
4072 // Iterative choice of "better path"
4074 for (Int_t it = 0; it < t1 - t0; it++) {
4076 if (!cl[best[iter][it]][it]) {
4080 // Add unisochronity + angular effect contribution
4081 Double_t sigmatr2 = smoffset[iter] + 0.5*tany*tany;
4082 Double_t sweight = 1.0/sigmatr2 + 1.0/track->GetSigmaY2();
4083 Double_t weighty = (moffset[iter] / sigmatr2) / sweight; // Weighted mean
4084 Double_t sigmacl = TMath::Sqrt(sigma1*sigma1 + track->GetSigmaY2());
4085 Double_t mindist = 100000.0;
4088 for (Int_t ih = 0; ih < 10; ih++) {
4092 Double_t dist2 = (dy[ih][it] - weighty) / sigmacl;
4093 dist2 *= dist2; // Chi2 distance
4094 if (dist2 < mindist) {
4099 best[iter+1][it] = ihbest;
4103 // Update best hypothesy if better chi2 according tracklet position and angle
4105 Double_t sy2 = smean[iter] + track->GetSigmaY2();
4106 Double_t sa2 = sangle[iter] + track->GetSigmaSnp2(); // track->fCee;
4107 Double_t say = track->GetSigmaSnpY(); // track->fCey;
4108 //Double_t chi20 = mean[bestiter]*mean[bestiter ] / sy2+angle[bestiter]*angle[bestiter]/sa2;
4109 //Double_t chi21 = mean[iter]*mean[iter] / sy2+angle[iter]*angle[iter]/sa2;
4111 Double_t detchi = sy2*sa2 - say*say;
4112 Double_t invers[3] = {sa2/detchi,sy2/detchi,-say/detchi}; // Inverse value of covariance matrix
4114 Double_t chi20 = mean[bestiter] * mean[bestiter] * invers[0]
4115 + angle[bestiter] * angle[bestiter] * invers[1]
4116 + 2.0 * mean[bestiter] * angle[bestiter] * invers[2];
4117 Double_t chi21 = mean[iter] * mean[iter] * invers[0]
4118 + angle[iter] * angle[iter] * invers[1]
4119 + 2.0 * mean[iter] * angle[iter] * invers[2];
4120 tchi2s[iter] = chi21;
4122 if ((changes[iter] <= changes[bestiter]) &&
4132 Double_t sigma2 = sigmas[0]; // Choose as sigma from 0 iteration
4133 Short_t maxpos = -1;
4134 Float_t maxcharge = 0.0;
4135 Short_t maxpos4 = -1;
4136 Float_t maxcharge4 = 0.0;
4137 Short_t maxpos5 = -1;
4138 Float_t maxcharge5 = 0.0;
4140 //if (tchi2s[bestiter]>25.) sigma2*=tchi2s[bestiter]/25.;
4141 //if (tchi2s[bestiter]>25.) sigma2=1000.; // dont'accept
4143 Double_t exB = AliTRDcalibDB::Instance()->GetOmegaTau(AliTRDcalibDB::Instance()->GetVdrift(0,0,0)
4144 ,-AliTracker::GetBz()*0.1);
4145 Double_t expectederr = sigma2*sigma2 + 0.01*0.01;
4147 expectederr += (mpads - 3.5) * 0.04;
4149 if (changes[bestiter] > 1) {
4150 expectederr += changes[bestiter] * 0.01;
4152 expectederr += (0.03 * (tany-exB)*(tany-exB)) * 15.0;
4153 //if (tchi2s[bestiter]>18.) expectederr*= tchi2s[bestiter]/18.;
4154 //expectederr+=10000;
4156 for (Int_t it = 0; it < t1 - t0; it++) {
4158 if (!cl[best[bestiter][it]][it]) {
4162 cl[best[bestiter][it]][it]->SetSigmaY2(expectederr); // Set cluster error
4163 if (!cl[best[bestiter][it]][it]->IsUsed()) {
4164 cl[best[bestiter][it]][it]->SetY(cl[best[bestiter][it]][it]->GetY());
4165 //cl[best[bestiter][it]][it]->Use();
4168 // Time bins with maximal charge
4169 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge) {
4170 maxcharge = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
4171 maxpos = cl[best[bestiter][it]][it]->GetLocalTimeBin();
4174 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge4) {
4175 if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 4) {
4176 maxcharge4 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
4177 maxpos4 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
4181 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge5) {
4182 if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 5) {
4183 maxcharge5 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
4184 maxpos5 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
4188 // Time bins with maximal charge
4189 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge) {
4190 maxcharge = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
4191 maxpos = cl[best[bestiter][it]][it]->GetLocalTimeBin();
4194 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge4) {
4195 if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 4) {
4196 maxcharge4 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
4197 maxpos4 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
4201 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge5) {
4202 if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 5) {
4203 maxcharge5 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
4204 maxpos5 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
4208 clusters[it+t0] = indexes[best[bestiter][it]][it];
4210 // Still needed ????
4211 //if (cl[best[bestiter][it]][it]->GetLocalTimeBin()>4 &&
4212 //cl[best[bestiter][it]][it]->GetLocalTimeBin()<18) clusters[it+t0]
4213 // = indexes[best[bestiter][it]][it]; //Test
4218 // Set tracklet parameters
4220 Double_t trackleterr2 = smoffset[bestiter] + 0.01*0.01;
4222 trackleterr2 += (mpads - 3.5) * 0.04;
4224 trackleterr2 += changes[bestiter] * 0.01;
4225 trackleterr2 *= TMath::Max(14.0 - nfound,1.0);
4226 trackleterr2 += 0.2 * (tany-exB)*(tany-exB);
4228 // Set tracklet parameters
4230 ,track2.GetY() + moffset[bestiter]
4234 tracklet.SetTilt(h01);
4235 tracklet.SetP0(mean[bestiter]);
4236 tracklet.SetP1(angle[bestiter]);
4237 tracklet.SetN(nfound);
4238 tracklet.SetNCross(changes[bestiter]);
4239 tracklet.SetPlane(plane);
4240 tracklet.SetSigma2(expectederr);
4241 tracklet.SetChi2(tchi2s[bestiter]);
4242 tracklet.SetMaxPos(maxpos,maxpos4,maxpos5);
4243 track->SetTracklets(plane,tracklet);
4244 track->SetNWrong(track->GetNWrong() + nbad[0]);
4249 TClonesArray array0("AliTRDcluster");
4250 TClonesArray array1("AliTRDcluster");
4251 array0.ExpandCreateFast(t1 - t0 + 1);
4252 array1.ExpandCreateFast(t1 - t0 + 1);
4253 TTreeSRedirector &cstream = *fDebugStreamer;
4254 AliTRDcluster dummy;
4258 for (Int_t it = 0; it < t1 - t0; it++) {
4259 dy0[it] = dy[0][it];
4260 dyb[it] = dy[best[bestiter][it]][it];
4262 new(array0[it]) AliTRDcluster(*cl[0][it]);
4265 new(array0[it]) AliTRDcluster(dummy);
4267 if(cl[best[bestiter][it]][it]) {
4268 new(array1[it]) AliTRDcluster(*cl[best[bestiter][it]][it]);
4271 new(array1[it]) AliTRDcluster(dummy);
4274 TGraph graph0(t1-t0,x,dy0);
4275 TGraph graph1(t1-t0,x,dyb);
4276 TGraph graphy(t1-t0,x,yt);
4277 TGraph graphz(t1-t0,x,zt);
4279 if (AliTRDReconstructor::StreamLevel() > 0) {
4280 cstream << "tracklet"
4281 << "track.=" << track // Track parameters
4282 << "tany=" << tany // Tangent of the local track angle
4283 << "xmean=" << xmean // Xmean - reference x of tracklet
4284 << "tilt=" << h01 // Tilt angle
4285 << "nall=" << nall // Number of foundable clusters
4286 << "nfound=" << nfound // Number of found clusters
4287 << "clfound=" << clfound // Total number of found clusters in road
4288 << "mpads=" << mpads // Mean number of pads per cluster
4289 << "plane=" << plane // Plane number
4290 << "detector=" << detector // Detector number
4291 << "road=" << road // The width of the used road
4292 << "graph0.=" << &graph0 // x - y = dy for closest cluster
4293 << "graph1.=" << &graph1 // x - y = dy for second closest cluster
4294 << "graphy.=" << &graphy // y position of the track
4295 << "graphz.=" << &graphz // z position of the track
4296 //<< "fCl.=" << &array0 // closest cluster
4297 //<< "fCl2.=" << &array1 // second closest cluster
4298 << "maxpos=" << maxpos // Maximal charge postion
4299 << "maxcharge=" << maxcharge // Maximal charge
4300 << "maxpos4=" << maxpos4 // Maximal charge postion - after bin 4
4301 << "maxcharge4=" << maxcharge4 // Maximal charge - after bin 4
4302 << "maxpos5=" << maxpos5 // Maximal charge postion - after bin 5
4303 << "maxcharge5=" << maxcharge5 // Maximal charge - after bin 5
4304 << "bestiter=" << bestiter // Best iteration number
4305 << "tracklet.=" << &tracklet // Corrspond to the best iteration
4306 << "tchi20=" << tchi2s[0] // Chi2 of cluster in the 0 iteration
4307 << "tchi2b=" << tchi2s[bestiter] // Chi2 of cluster in the best iteration
4308 << "sigmas0=" << sigmas[0] // Residuals sigma
4309 << "sigmasb=" << sigmas[bestiter] // Residulas sigma
4310 << "ngood0=" << ngood[0] // Number of good clusters in 0 iteration
4311 << "nbad0=" << nbad[0] // Number of bad clusters in 0 iteration
4312 << "ngoodb=" << ngood[bestiter] // in best iteration
4313 << "nbadb=" << nbad[bestiter] // in best iteration
4314 << "changes0=" << changes[0] // Changes of pardrows in iteration number 0
4315 << "changesb=" << changes[bestiter] // Changes of pardrows in best iteration
4316 << "moffset0=" << moffset[0] // Offset fixing angle in iter=0
4317 << "smoffset0=" << smoffset[0] // Sigma of offset fixing angle in iter=0
4318 << "moffsetb=" << moffset[bestiter] // Offset fixing angle in iter=best
4319 << "smoffsetb=" << smoffset[bestiter] // Sigma of offset fixing angle in iter=best
4320 << "mean0=" << mean[0] // Mean dy in iter=0;
4321 << "smean0=" << smean[0] // Sigma of mean dy in iter=0
4322 << "meanb=" << mean[bestiter] // Mean dy in iter=best
4323 << "smeanb=" << smean[bestiter] // Sigma of mean dy in iter=best
4324 << "angle0=" << angle[0] // Angle deviation in the iteration number 0
4325 << "sangle0=" << sangle[0] // Sigma of angular deviation in iteration number 0
4326 << "angleb=" << angle[bestiter] // Angle deviation in the best iteration
4327 << "sangleb=" << sangle[bestiter] // Sigma of angle deviation in the best iteration
4328 << "expectederr=" << expectederr // Expected error of cluster position
4336 //_____________________________________________________________________________
4337 Int_t AliTRDtrackerHLT::Freq(Int_t n, const Int_t *inlist
4338 , Int_t *outlist, Bool_t down)
4341 // Sort eleements according occurancy
4342 // The size of output array has is 2*n
4345 Int_t *sindexS = new Int_t[n]; // Temporary array for sorting
4346 Int_t *sindexF = new Int_t[2*n];
4347 for (Int_t i = 0; i < n; i++) {
4351 TMath::Sort(n,inlist,sindexS,down);
4353 Int_t last = inlist[sindexS[0]];
4356 sindexF[0+n] = last;
4360 for (Int_t i = 1; i < n; i++) {
4361 val = inlist[sindexS[i]];
4363 sindexF[countPos]++;
4367 sindexF[countPos+n] = val;
4368 sindexF[countPos]++;
4376 // Sort according frequency
4377 TMath::Sort(countPos,sindexF,sindexS,kTRUE);
4379 for (Int_t i = 0; i < countPos; i++) {
4380 outlist[2*i ] = sindexF[sindexS[i]+n];
4381 outlist[2*i+1] = sindexF[sindexS[i]];
4391 //_____________________________________________________________________________
4392 AliTRDtrack *AliTRDtrackerHLT::RegisterSeed(AliTRDseed *seeds, Double_t *params)
4398 Double_t alpha = AliTRDgeometry::GetAlpha();
4399 Double_t shift = AliTRDgeometry::GetAlpha()/2.0;
4403 c[ 1] = 0.0; c[ 2] = 2.0;
4404 c[ 3] = 0.0; c[ 4] = 0.0; c[ 5] = 0.02;
4405 c[ 6] = 0.0; c[ 7] = 0.0; c[ 8] = 0.0; c[ 9] = 0.1;
4406 c[10] = 0.0; c[11] = 0.0; c[12] = 0.0; c[13] = 0.0; c[14] = params[5]*params[5]*0.01;
4409 AliTRDcluster *cl = 0;
4411 for (Int_t ilayer = 0; ilayer < 6; ilayer++) {
4412 if (seeds[ilayer].IsOK()) {
4413 for (Int_t itime = 22; itime > 0; itime--) {
4414 if (seeds[ilayer].GetIndexes(itime) > 0) {
4415 index = seeds[ilayer].GetIndexes(itime);
4416 cl = seeds[ilayer].GetClusters(itime);
4429 AliTRDtrack *track = new AliTRDtrack(cl
4434 ,params[6]*alpha+shift);
4435 track->PropagateTo(params[0]-5.0);
4436 track->ResetCovariance(1);
4438 AliDebug(2, Form("FollowBackProlongation"));
4440 Int_t rc = FollowBackProlongation(*track);
4442 AliWarning("rc < 30 deleting the track");
4448 CookdEdxTimBin(*track);
4449 CookLabel(track,0.9);
4455 //////////////////////////////////////////////////////////////////////////////////////////
4457 void AliTRDtrackerHLT::InitLogHists() {
4459 fHBackfit = new TH1D("logTRD_backfit", "", 40, -0.5, 39.5);
4460 fHRefit = new TH1D("logTRD_refit", "", 40, -0.5, 39.5);
4461 fHClSearch = new TH1D("logTRD_clSearch", "", 60, -0.5, 59.5);
4463 fHX = new TH1D("logTRD_X", ";x (cm)", 200, 50, 400);
4464 fHNCl = new TH1D("logTRD_ncl", "", 40, -0.5, 39.5);
4465 fHNClTrack = new TH1D("logTRD_nclTrack", "", 180, -0.5, 179.5);
4467 fHMinYPos = new TH1D("logTRD_minYPos", ";#delta Y (cm)", 400, -6, 6);
4468 fHMinYNeg = new TH1D("logTRD_minYNeg", ";#delta Y (cm)", 400, -6, 6);
4469 fHMinZ = new TH1D("logTRD_minZ", ";#delta Z (cm)", 400, -20, 20);
4470 fHMinD = new TH2D("logTRD_minD", ";#delta Y (cm);#delta Z (cm)", 100, -6, 6, 100, -50, 50);
4472 fHDeltaX = new TH1D("logTRD_deltaX", ";#delta X (cm)", 100, -5, 5);
4473 fHXCl = new TH1D("logTRD_xCl", ";cluster x position (cm)", 1000, 280, 380);
4475 const char *nameFindCl[4] = {"logTRD_clY", "logTRD_clZ", "logTRD_clB", "logTRD_clG"};
4477 for(int i=0; i<4; i++) {
4478 fHFindCl[i] = new TH1D(nameFindCl[i], "", 30, -0.5, 29.5);
4482 //////////////////////////////////////////////////////////////////////////////////////////
4484 void AliTRDtrackerHLT::SaveLogHists() {
4486 TDirectory *sav = gDirectory;
4489 TSeqCollection *col = gROOT->GetListOfFiles();
4490 int N = col->GetEntries();
4491 for(int i=0; i<N; i++) {
4492 logFile = (TFile*)col->At(i);
4493 if (strstr(logFile->GetName(), "AliESDs.root")) break;
4497 fHBackfit->Write(fHBackfit->GetName(), TObject::kOverwrite);
4498 fHRefit->Write(fHRefit->GetName(), TObject::kOverwrite);
4499 fHClSearch->Write(fHClSearch->GetName(), TObject::kOverwrite);
4500 fHX->Write(fHX->GetName(), TObject::kOverwrite);
4501 fHNCl->Write(fHNCl->GetName(), TObject::kOverwrite);
4502 fHNClTrack->Write(fHNClTrack->GetName(), TObject::kOverwrite);
4504 fHMinYPos->Write(fHMinYPos->GetName(), TObject::kOverwrite);
4505 fHMinYNeg->Write(fHMinYNeg->GetName(), TObject::kOverwrite);
4506 fHMinD->Write(fHMinD->GetName(), TObject::kOverwrite);
4507 fHMinZ->Write(fHMinZ->GetName(), TObject::kOverwrite);
4509 fHDeltaX->Write(fHDeltaX->GetName(), TObject::kOverwrite);
4510 fHXCl->Write(fHXCl->GetName(), TObject::kOverwrite);
4513 for(int i=0; i<4; i++)
4514 fHFindCl[i]->Write(fHFindCl[i]->GetName(), TObject::kOverwrite);
4521 //////////////////////////////////////////////////////////////////////////////////////////