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>
42 #include "AliAlignObj.h"
43 #include "AliRieman.h"
44 #include "AliTrackPointArray.h"
46 #include "AliTRDgeometry.h"
47 #include "AliTRDpadPlane.h"
48 #include "AliTRDgeometry.h"
49 #include "AliTRDcluster.h"
50 #include "AliTRDtrack.h"
51 #include "AliTRDseed.h"
52 #include "AliTRDcalibDB.h"
53 #include "AliTRDCommonParam.h"
54 #include "AliTRDtrackerHLT.h"
55 #include "AliTRDReconstructor.h"
56 #include "AliTRDCalibraFillHisto.h"
58 ClassImp(AliTRDtrackerHLT)
60 const Float_t AliTRDtrackerHLT::fgkMinClustersInTrack = 0.5;
61 const Float_t AliTRDtrackerHLT::fgkLabelFraction = 0.8; // ??
62 const Double_t AliTRDtrackerHLT::fgkMaxChi2 = 12.0;
63 const Double_t AliTRDtrackerHLT::fgkMaxSnp = 0.95; // Corresponds to tan = 3
64 const Double_t AliTRDtrackerHLT::fgkMaxStep = 2.0; // Maximal step size in propagation
66 //_____________________________________________________________________________
67 AliTRDtrackerHLT::AliTRDtrackerHLT()
94 // Default constructor
97 for (Int_t i = 0; i < AliTRDtrackingHLT::kTrackingSectors; i++) {
100 for (Int_t j = 0; j < 5; j++) {
101 for (Int_t k = 0; k < 18; k++) {
102 fHoles[j][k] = kFALSE;
110 //_____________________________________________________________________________
111 AliTRDtrackerHLT::AliTRDtrackerHLT(const AliTRDtrackerHLT &t)
132 ,fTimeBinsPerPlane(0)
133 ,fAddTRDseeds(kFALSE)
143 //_____________________________________________________________________________
144 AliTRDtrackerHLT::AliTRDtrackerHLT(const TFile *geomfile)
160 ,fClusters(new TObjArray(2000))
162 ,fSeeds(new TObjArray(2000))
164 ,fTracks(new TObjArray(1000))
165 ,fTimeBinsPerPlane(0)
166 ,fAddTRDseeds(kFALSE)
174 TDirectory *savedir = gDirectory;
175 TFile *in = (TFile *) geomfile;
178 AliWarning("geometry file is not open!\n");
179 AliWarning("FULL TRD geometry and DEFAULT TRD parameter will be used\n");
183 fGeom = (AliTRDgeometry *) in->Get("TRDgeometry");
187 AliWarning("Cannot find TRD geometry!\n");
188 fGeom = new AliTRDgeometry();
190 fGeom->ReadGeoMatrices();
194 for (Int_t geomS = 0; geomS < AliTRDtrackingHLT::kTrackingSectors; geomS++) {
196 fTrSec[trS] = new AliTRDtrackingSectorHLT(fGeom,geomS);
197 for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) {
198 fHoles[icham][trS] = fGeom->IsHole(0,icham,geomS);
202 AliTRDpadPlane *padPlane = AliTRDCommonParam::Instance()->GetPadPlane(0,0);
203 Float_t tiltAngle = TMath::Abs(padPlane->GetTiltingAngle());
204 if (tiltAngle < 0.1) {
208 if (!AliTRDcalibDB::Instance()) {
209 AliFatal("Could not get calibration object");
211 fTimeBinsPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
213 fDebugStreamer = new TTreeSRedirector("TRDdebug.root");
221 //_____________________________________________________________________________
222 AliTRDtrackerHLT::~AliTRDtrackerHLT()
225 // Destructor of AliTRDtrackerHLT
245 for (Int_t geomS = 0; geomS < AliTRDtrackingHLT::kTrackingSectors; geomS++) {
246 delete fTrSec[geomS];
249 if (fDebugStreamer) {
250 delete fDebugStreamer;
255 //_____________________________________________________________________________
256 Int_t AliTRDtrackerHLT::LocalToGlobalID(Int_t lid)
259 // Transform internal TRD ID to global detector ID
262 Int_t isector = fGeom->GetSector(lid);
263 Int_t ichamber = fGeom->GetChamber(lid);
264 Int_t iplan = fGeom->GetPlane(lid);
266 AliGeomManager::ELayerID iLayer = AliGeomManager::kTRD1;
269 iLayer = AliGeomManager::kTRD1;
272 iLayer = AliGeomManager::kTRD2;
275 iLayer = AliGeomManager::kTRD3;
278 iLayer = AliGeomManager::kTRD4;
281 iLayer = AliGeomManager::kTRD5;
284 iLayer = AliGeomManager::kTRD6;
288 Int_t modId = isector * fGeom->Ncham() + ichamber;
289 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,modId);
295 //_____________________________________________________________________________
296 Int_t AliTRDtrackerHLT::GlobalToLocalID(Int_t gid)
299 // Transform global detector ID to local detector ID
303 AliGeomManager::ELayerID layerId = AliGeomManager::VolUIDToLayer(gid,modId);
305 Int_t isector = modId / fGeom->Ncham();
306 Int_t ichamber = modId % fGeom->Ncham();
310 case AliGeomManager::kTRD1:
313 case AliGeomManager::kTRD2:
316 case AliGeomManager::kTRD3:
319 case AliGeomManager::kTRD4:
322 case AliGeomManager::kTRD5:
325 case AliGeomManager::kTRD6:
336 Int_t lid = fGeom->GetDetector(iLayer,ichamber,isector);
342 //_____________________________________________________________________________
343 Bool_t AliTRDtrackerHLT::Transform(AliTRDcluster *cluster)
346 // Transform something ... whatever ...
349 // Magic constants for geo manager transformation
350 const Double_t kX0shift = 2.52;
351 const Double_t kX0shift5 = 3.05;
354 // Apply alignment and calibration to transform cluster
356 Int_t detector = cluster->GetDetector();
357 Int_t plane = fGeom->GetPlane(cluster->GetDetector());
358 Int_t chamber = fGeom->GetChamber(cluster->GetDetector());
359 Int_t sector = fGeom->GetSector(cluster->GetDetector());
361 Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region
362 Double_t driftX = TMath::Max(cluster->GetX()-dxAmp*0.5,0.0); // Drift distance
367 Double_t vdrift = AliTRDcalibDB::Instance()->GetVdrift(cluster->GetDetector(),0,0);
368 Double_t exB = AliTRDcalibDB::Instance()->GetOmegaTau(vdrift,-AliTracker::GetBz()*0.1);
370 AliTRDCommonParam *commonParam = AliTRDCommonParam::Instance();
371 AliTRDpadPlane *padPlane = commonParam->GetPadPlane(plane,chamber);
372 Double_t zshiftIdeal = 0.5*(padPlane->GetRow0()+padPlane->GetRowEnd());
373 Double_t localPos[3];
374 Double_t localPosTracker[3];
375 localPos[0] = -cluster->GetX();
376 localPos[1] = cluster->GetY() - driftX * exB;
377 localPos[2] = cluster->GetZ() - zshiftIdeal;
379 cluster->SetY(cluster->GetY() - driftX*exB);
380 Double_t xplane = (Double_t) AliTRDgeometry::GetTime0(plane);
381 cluster->SetX(xplane - cluster->GetX());
383 TGeoHMatrix *matrix = fGeom->GetCorrectionMatrix(cluster->GetDetector());
385 // No matrix found - if somebody used geometry with holes
386 AliError("Invalid Geometry - Default Geometry used\n");
389 matrix->LocalToMaster(localPos,localPosTracker);
391 if (AliTRDReconstructor::StreamLevel() > 1) {
392 (* fDebugStreamer) << "Transform"
394 << "matrix.=" << matrix
395 << "Detector=" << detector
396 << "Sector=" << sector
398 << "Chamber=" << chamber
399 << "lx0=" << localPosTracker[0]
400 << "ly0=" << localPosTracker[1]
401 << "lz0=" << localPosTracker[2]
406 cluster->SetX(localPosTracker[0]+kX0shift5);
409 cluster->SetX(localPosTracker[0]+kX0shift);
412 cluster->SetY(localPosTracker[1]);
413 cluster->SetZ(localPosTracker[2]);
419 //_____________________________________________________________________________
420 // Bool_t AliTRDtrackerHLT::Transform(AliTRDcluster *cluster)
423 // // Is this still needed ????
425 // const Double_t kDriftCorrection = 1.01; // drift coeficient correction
426 // const Double_t kTime0Cor = 0.32; // time0 correction
428 // const Double_t kX0shift = 2.52;
429 // const Double_t kX0shift5 = 3.05;
432 // // apply alignment and calibration to transform cluster
435 // Int_t detector = cluster->GetDetector();
436 // Int_t plane = fGeom->GetPlane(cluster->GetDetector());
437 // Int_t chamber = fGeom->GetChamber(cluster->GetDetector());
438 // Int_t sector = fGeom->GetSector(cluster->GetDetector());
440 // Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region
441 // Double_t driftX = TMath::Max(cluster->GetX()-dxAmp*0.5,0.); // drift distance
445 // Double_t vdrift = AliTRDcalibDB::Instance()->GetVdrift(cluster->GetDetector(),0,0);
446 // Double_t exB = AliTRDcalibDB::Instance()->GetOmegaTau(vdrift,-AliTracker::GetBz()*0.1);
449 // AliTRDCommonParam* commonParam = AliTRDCommonParam::Instance();
450 // AliTRDpadPlane * padPlane = commonParam->GetPadPlane(plane,chamber);
451 // Double_t zshiftIdeal = 0.5*(padPlane->GetRow0()+padPlane->GetRowEnd());
452 // Double_t localPos[3], globalPos[3], localPosTracker[3], localPosTracker2[3];
453 // localPos[2] = -cluster->GetX();
454 // localPos[0] = cluster->GetY() - driftX*exB;
455 // localPos[1] = cluster->GetZ() -zshiftIdeal;
456 // TGeoHMatrix * matrix = fGeom->GetGeoMatrix(cluster->GetDetector());
457 // matrix->LocalToMaster(localPos, globalPos);
459 // Double_t sectorAngle = 20.*(sector%18)+10;
460 // TGeoHMatrix rotSector;
461 // rotSector.RotateZ(sectorAngle);
462 // rotSector.LocalToMaster(globalPos, localPosTracker);
465 // TGeoHMatrix matrix2(*matrix);
466 // matrix2.MultiplyLeft(&rotSector);
467 // matrix2.LocalToMaster(localPos,localPosTracker2);
471 // cluster->SetY(cluster->GetY() - driftX*exB);
472 // Double_t xplane = (Double_t) AliTRDgeometry::GetTime0(plane);
473 // cluster->SetX(xplane- kDriftCorrection*(cluster->GetX()-kTime0Cor));
474 // (*fDebugStreamer)<<"Transform"<<
476 // "matrix.="<<matrix<<
477 // "matrix2.="<<&matrix2<<
478 // "Detector="<<detector<<
479 // "Sector="<<sector<<
481 // "Chamber="<<chamber<<
482 // "lx0="<<localPosTracker[0]<<
483 // "ly0="<<localPosTracker[1]<<
484 // "lz0="<<localPosTracker[2]<<
485 // "lx2="<<localPosTracker2[0]<<
486 // "ly2="<<localPosTracker2[1]<<
487 // "lz2="<<localPosTracker2[2]<<
491 // cluster->SetX(localPosTracker[0]+kX0shift5);
493 // cluster->SetX(localPosTracker[0]+kX0shift);
495 // cluster->SetY(localPosTracker[1]);
496 // cluster->SetZ(localPosTracker[2]);
500 //_____________________________________________________________________________
501 Bool_t AliTRDtrackerHLT::AdjustSector(AliTRDtrack *track)
504 // Rotates the track when necessary
507 Double_t alpha = AliTRDgeometry::GetAlpha();
508 Double_t y = track->GetY();
509 Double_t ymax = track->GetX()*TMath::Tan(0.5*alpha);
511 // Is this still needed ????
512 //Int_t ns = AliTRDgeometry::kNsect;
513 //Int_t s=Int_t(track->GetAlpha()/alpha)%ns;
517 if (!track->Rotate( alpha)) {
521 else if (y < -ymax) {
523 if (!track->Rotate(-alpha)) {
532 //_____________________________________________________________________________
533 AliTRDcluster *AliTRDtrackerHLT::GetCluster(AliTRDtrack *track, Int_t plane
534 , Int_t timebin, UInt_t &index)
537 // Try to find cluster in the backup list
540 AliTRDcluster *cl =0;
541 Int_t *indexes = track->GetBackupIndexes();
543 for (UInt_t i = 0; i < AliTRDtrackingHLT::kMaxTimeBinIndex; i++) {
544 if (indexes[i] == 0) {
547 AliTRDcluster *cli = (AliTRDcluster *) fClusters->UncheckedAt(indexes[i]);
551 if (cli->GetLocalTimeBin() != timebin) {
554 Int_t iplane = fGeom->GetPlane(cli->GetDetector());
555 if (iplane == plane) {
566 //_____________________________________________________________________________
567 Int_t AliTRDtrackerHLT::GetLastPlane(AliTRDtrack *track)
570 // Return last updated plane
574 Int_t *indexes = track->GetBackupIndexes();
576 for (UInt_t i = 0; i < AliTRDtrackingHLT::kMaxTimeBinIndex; i++) {
577 AliTRDcluster *cli = (AliTRDcluster *) fClusters->UncheckedAt(indexes[i]);
581 Int_t iplane = fGeom->GetPlane(cli->GetDetector());
582 if (iplane > lastplane) {
591 //_____________________________________________________________________________
592 Int_t AliTRDtrackerHLT::Clusters2Tracks(AliESD *event)
595 // Finds tracks within the TRD. The ESD event is expected to contain seeds
596 // at the outer part of the TRD. The seeds
597 // are found within the TRD if fAddTRDseeds is TRUE.
598 // The tracks are propagated to the innermost time bin
599 // of the TRD and the ESD event is updated
602 Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins();
603 Float_t foundMin = fgkMinClustersInTrack * timeBins;
606 //Int_t innerTB = fTrSec[0]->GetInnerTimeBin();
608 Int_t n = event->GetNumberOfTracks();
609 for (Int_t i = 0; i < n; i++) {
611 AliESDtrack *seed = event->GetTrack(i);
612 ULong_t status = seed->GetStatus();
613 if ((status & AliESDtrack::kTRDout) == 0) {
616 if ((status & AliESDtrack::kTRDin) != 0) {
621 AliTRDtrack *seed2 = new AliTRDtrack(*seed);
622 //seed2->ResetCovariance();
623 AliTRDtrack *pt = new AliTRDtrack(*seed2,seed2->GetAlpha());
624 AliTRDtrack &t = *pt;
625 FollowProlongation(t);
626 if (t.GetNumberOfClusters() >= foundMin) {
628 CookLabel(pt,1 - fgkLabelFraction);
633 Double_t xTPC = 250.0;
634 if (PropagateToX(t,xTPC,fgkMaxStep)) {
635 seed->UpdateTrackParams(pt, AliESDtrack::kTRDin);
642 AliInfo(Form("Number of loaded seeds: %d",nseed));
643 AliInfo(Form("Number of found tracks from loaded seeds: %d",found));
644 AliInfo(Form("Total number of found tracks: %d",found));
650 //_____________________________________________________________________________
651 Int_t AliTRDtrackerHLT::PropagateBack(AliESD *event)
654 // Gets seeds from ESD event. The seeds are AliTPCtrack's found and
655 // backpropagated by the TPC tracker. Each seed is first propagated
656 // to the TRD, and then its prolongation is searched in the TRD.
657 // If sufficiently long continuation of the track is found in the TRD
658 // the track is updated, otherwise it's stored as originaly defined
659 // by the TPC tracker.
662 Int_t found = 0; // number of tracks found
663 Float_t foundMin = 20.0;
664 Int_t n = event->GetNumberOfTracks();
667 Float_t *quality = new Float_t[n];
668 Int_t *index = new Int_t[n];
669 for (Int_t i = 0; i < n; i++) {
670 AliESDtrack *seed = event->GetTrack(i);
671 Double_t covariance[15];
672 seed->GetExternalCovariance(covariance);
673 quality[i] = covariance[0]+covariance[2];
674 //quality[i] = covariance[0];
676 TMath::Sort(n,quality,index,kFALSE);
678 for (Int_t i = 0; i < n; i++) {
680 //AliESDtrack *seed = event->GetTrack(i);
681 AliESDtrack *seed = event->GetTrack(index[i]);
684 ULong_t status = seed->GetStatus();
685 if ((status & AliESDtrack::kTPCout) == 0) {
690 if ((status & AliESDtrack::kTRDout) != 0) {
695 Int_t lbl = seed->GetLabel();
696 AliTRDtrack *track = new AliTRDtrack(*seed);
697 track->SetSeedLabel(lbl);
698 seed->UpdateTrackParams(track,AliESDtrack::kTRDbackup); // Make backup
700 Float_t p4 = track->GetC();
701 Int_t expectedClr = FollowBackProlongation(*track);
704 fHX->Fill(track->GetX());
707 // store the last measurement
709 fHNClTrack->Fill(track->GetNumberOfClusters());
710 if (track->GetNumberOfClusters() >= foundMin) {
714 CookdEdxTimBin(*track);
715 CookLabel(track,1 - fgkLabelFraction);
716 if (track->GetBackupTrack()) {
717 //fHBackfit->Fill(5);
718 UseClusters(track->GetBackupTrack());
719 seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup);
725 // inter-tracks competition ???
726 if ((TMath::Abs(track->GetC() - p4) / TMath::Abs(p4) < 0.2) ||
727 (TMath::Abs(track->GetPt()) > 0.8)) {
732 // Make backup for back propagation
735 Int_t foundClr = track->GetNumberOfClusters();
736 if (foundClr >= foundMin) {
738 CookdEdxTimBin(*track);
739 CookLabel(track,1 - fgkLabelFraction);
740 if (track->GetBackupTrack()) {
741 UseClusters(track->GetBackupTrack());
744 // Sign only gold tracks
745 if (track->GetChi2() / track->GetNumberOfClusters() < 4) {
746 if ((seed->GetKinkIndex(0) == 0) &&
747 (TMath::Abs(track->GetPt()) < 1.5)) {
751 Bool_t isGold = kFALSE;
754 if (track->GetChi2() / track->GetNumberOfClusters() < 5) {
755 //seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup);
756 if (track->GetBackupTrack()) {
757 seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup);
766 (track->GetNCross() == 0) &&
767 (track->GetChi2() / track->GetNumberOfClusters() < 7)) {
768 //seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup);
769 if (track->GetBackupTrack()) {
770 seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup);
776 (track->GetBackupTrack())) {
777 if ((track->GetBackupTrack()->GetNumberOfClusters() > foundMin) &&
778 ((track->GetBackupTrack()->GetChi2()/(track->GetBackupTrack()->GetNumberOfClusters()+1)) < 7)) {
779 seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup);
784 if ((track->StatusForTOF() > 0) &&
785 (track->GetNCross() == 0) &&
786 (Float_t(track->GetNumberOfClusters()) / Float_t(track->GetNExpected()) > 0.4)) {
787 //seed->UpdateTrackParams(track->GetBackupTrack(), AliESDtrack::kTRDbackup);
795 // Debug part of tracking
796 TTreeSRedirector &cstream = *fDebugStreamer;
797 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.
798 if (AliTRDReconstructor::StreamLevel() > 0) {
799 if (track->GetBackupTrack()) {
801 << "EventNrInFile=" << eventNrInFile
804 << "trdback.=" << track->GetBackupTrack()
809 << "EventNrInFile=" << eventNrInFile
812 << "trdback.=" << track
818 // Propagation to the TOF (I.Belikov)
819 if (track->GetStop() == kFALSE) {
822 Double_t xtof = 371.0;
823 Double_t xTOF0 = 370.0;
825 Double_t c2 = track->GetSnp() + track->GetC() * (xtof - track->GetX());
826 if (TMath::Abs(c2) >= 0.99) {
833 PropagateToX(*track,xTOF0,fgkMaxStep);
835 // Energy losses taken to the account - check one more time
836 c2 = track->GetSnp() + track->GetC() * (xtof - track->GetX());
837 if (TMath::Abs(c2) >= 0.99) {
844 //if (!PropagateToX(*track,xTOF0,fgkMaxStep)) {
845 // fHBackfit->Fill(7);
850 Double_t ymax = xtof * TMath::Tan(0.5 * AliTRDgeometry::GetAlpha());
852 track->GetYAt(xtof,GetBz(),y);
854 if (!track->Rotate( AliTRDgeometry::GetAlpha())) {
860 else if (y < -ymax) {
861 if (!track->Rotate(-AliTRDgeometry::GetAlpha())) {
868 if (track->PropagateTo(xtof)) {
869 seed->UpdateTrackParams(track,AliESDtrack::kTRDout);
872 for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
873 for (Int_t j = 0; j < AliESDtrack::kNSlice; j++) {
874 seed->SetTRDsignals(track->GetPIDsignals(i,j),i,j);
876 seed->SetTRDTimBin(track->GetPIDTimBin(i),i);
878 //seed->SetTRDtrack(new AliTRDtrack(*track));
879 if (track->GetNumberOfClusters() > foundMin) {
890 if ((track->GetNumberOfClusters() > 15) &&
891 (track->GetNumberOfClusters() > 0.5*expectedClr)) {
893 seed->UpdateTrackParams(track,AliESDtrack::kTRDout);
896 //seed->SetStatus(AliESDtrack::kTRDStop);
897 for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
898 for (Int_t j = 0; j <AliESDtrack::kNSlice; j++) {
899 seed->SetTRDsignals(track->GetPIDsignals(i,j),i,j);
901 seed->SetTRDTimBin(track->GetPIDTimBin(i),i);
903 //seed->SetTRDtrack(new AliTRDtrack(*track));
909 seed->SetTRDQuality(track->StatusForTOF());
910 seed->SetTRDBudget(track->GetBudget(0));
916 AliInfo(Form("Number of seeds: %d",fNseeds));
917 AliInfo(Form("Number of back propagated TRD tracks: %d",found));
920 if (AliTRDReconstructor::SeedingOn()) {
921 MakeSeedsMI(3,5,event);
935 //_____________________________________________________________________________
936 Int_t AliTRDtrackerHLT::RefitInward(AliESD *event)
939 // Refits tracks within the TRD. The ESD event is expected to contain seeds
940 // at the outer part of the TRD.
941 // The tracks are propagated to the innermost time bin
942 // of the TRD and the ESD event is updated
943 // Origin: Thomas KUHR (Thomas.Kuhr@cern.ch)
946 Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins();
947 Float_t foundMin = fgkMinClustersInTrack * timeBins;
950 //Int_t innerTB = fTrSec[0]->GetInnerTimeBin();
953 Int_t n = event->GetNumberOfTracks();
954 for (Int_t i = 0; i < n; i++) {
956 AliESDtrack *seed = event->GetTrack(i);
957 new (&seed2) AliTRDtrack(*seed);
960 if (seed2.GetX() < 270.0) {
961 seed->UpdateTrackParams(&seed2,AliESDtrack::kTRDbackup); // Backup TPC track - only update
966 ULong_t status = seed->GetStatus();
967 if ((status & AliESDtrack::kTRDout) == 0) {
971 if ((status & AliESDtrack::kTRDin) != 0) {
979 seed2.ResetCovariance(50.0);
981 AliTRDtrack *pt = new AliTRDtrack(seed2,seed2.GetAlpha());
982 Int_t *indexes2 = seed2.GetIndexes();
983 for (Int_t i = 0; i < AliESDtrack::kNPlane;i++) {
984 for (Int_t j = 0; j < AliESDtrack::kNSlice;j++) {
985 pt->SetPIDsignals(seed2.GetPIDsignals(i,j),i,j);
987 pt->SetPIDTimBin(seed2.GetPIDTimBin(i),i);
990 Int_t *indexes3 = pt->GetBackupIndexes();
991 for (Int_t i = 0; i < 200;i++) {
992 if (indexes2[i] == 0) {
995 indexes3[i] = indexes2[i];
998 //AliTRDtrack *pt = seed2;
999 AliTRDtrack &t = *pt;
1000 FollowProlongation(t);
1001 if (t.GetNumberOfClusters() >= foundMin) {
1003 //CookLabel(pt, 1-fgkLabelFraction);
1009 Double_t xTPC = 250.0;
1010 if (PropagateToX(t,xTPC,fgkMaxStep)) {
1012 seed->UpdateTrackParams(pt,AliESDtrack::kTRDrefit);
1015 for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
1016 for (Int_t j = 0; j < AliESDtrack::kNSlice; j++) {
1017 seed->SetTRDsignals(pt->GetPIDsignals(i,j),i,j);
1019 seed->SetTRDTimBin(pt->GetPIDTimBin(i),i);
1023 // If not prolongation to TPC - propagate without update
1025 AliTRDtrack *seed2 = new AliTRDtrack(*seed);
1026 seed2->ResetCovariance(5.0);
1027 AliTRDtrack *pt2 = new AliTRDtrack(*seed2,seed2->GetAlpha());
1029 if (PropagateToX(*pt2,xTPC,fgkMaxStep)) {
1031 CookdEdxTimBin(*pt2);
1032 seed->UpdateTrackParams(pt2,AliESDtrack::kTRDrefit);
1035 for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
1036 for (Int_t j = 0; j < AliESDtrack::kNSlice; j++) {
1037 seed->SetTRDsignals(pt2->GetPIDsignals(i,j),i,j);
1039 seed->SetTRDTimBin(pt2->GetPIDTimBin(i),i);
1049 AliInfo(Form("Number of loaded seeds: %d",nseed));
1050 AliInfo(Form("Number of found tracks from loaded seeds: %d",found));
1056 //_____________________________________________________________________________
1057 Int_t AliTRDtrackerHLT::FollowProlongation(AliTRDtrack &t)
1060 // Starting from current position on track=t this function tries
1061 // to extrapolate the track up to timeBin=0 and to confirm prolongation
1062 // if a close cluster is found. Returns the number of clusters
1063 // expected to be found in sensitive layers
1064 // GeoManager used to estimate mean density
1068 Int_t lastplane = GetLastPlane(&t);
1069 Double_t radLength = 0.0;
1071 Int_t expectedNumberOfClusters = 0;
1073 for (Int_t iplane = lastplane; iplane >= 0; iplane--) {
1075 Int_t row0 = GetGlobalTimeBin(0,iplane,GetTimeBinsPerPlane()-1);
1076 Int_t rowlast = GetGlobalTimeBin(0,iplane,0);
1079 // Propagate track close to the plane if neccessary
1081 Double_t currentx = fTrSec[0]->GetLayer(rowlast)->GetX();
1082 if (currentx < (-fgkMaxStep + t.GetX())) {
1083 // Propagate closer to chamber - safety space fgkMaxStep
1084 if (!PropagateToX(t,currentx+fgkMaxStep,fgkMaxStep)) {
1089 if (!AdjustSector(&t)) {
1094 // Get material budget
1103 // Starting global position
1105 // End global position
1106 x = fTrSec[0]->GetLayer(row0)->GetX();
1107 if (!t.GetProlongation(x,y,z)) {
1110 xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha());
1111 xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha());
1113 AliKalmanTrack::MeanMaterialBudget(xyz0,xyz1,param);
1115 radLength = param[1]; // Get mean propagation parameters
1118 // Propagate and update
1120 sector = t.GetSector();
1121 //for (Int_t itime=GetTimeBinsPerPlane()-1;itime>=0;itime--) {
1122 for (Int_t itime = 0 ; itime < GetTimeBinsPerPlane(); itime++) {
1124 Int_t ilayer = GetGlobalTimeBin(0,iplane,itime);
1125 expectedNumberOfClusters++;
1126 t.SetNExpected(t.GetNExpected() + 1);
1127 if (t.GetX() > 345.0) {
1128 t.SetNExpectedLast(t.GetNExpectedLast() + 1);
1130 AliTRDpropagationLayerHLT &timeBin = *(fTrSec[sector]->GetLayer(ilayer));
1131 AliTRDcluster *cl = 0;
1133 Double_t maxChi2 = fgkMaxChi2;
1138 AliTRDcluster *cl0 = timeBin[0];
1140 // No clusters in given time bin
1144 Int_t plane = fGeom->GetPlane(cl0->GetDetector());
1145 if (plane > lastplane) {
1149 Int_t timebin = cl0->GetLocalTimeBin();
1150 AliTRDcluster *cl2 = GetCluster(&t,plane,timebin,index);
1155 //Double_t h01 = GetTiltFactor(cl); //I.B's fix
1156 //maxChi2=t.GetPredictedChi2(cl,h01);
1161 //if (cl->GetNPads()<5)
1162 Double_t dxsample = timeBin.GetdX();
1163 t.SetSampledEdx(TMath::Abs(cl->GetQ()/dxsample));
1164 Double_t h01 = GetTiltFactor(cl);
1165 Int_t det = cl->GetDetector();
1166 Int_t plane = fGeom->GetPlane(det);
1167 if (t.GetX() > 345.0) {
1168 t.SetNLast(t.GetNLast() + 1);
1169 t.SetChi2Last(t.GetChi2Last() + maxChi2);
1172 Double_t xcluster = cl->GetX();
1173 t.PropagateTo(xcluster,radLength,rho);
1175 if (!AdjustSector(&t)) {
1178 maxChi2 = t.GetPredictedChi2(cl,h01);
1181 if (!t.UpdateMI(cl,maxChi2,index,h01,plane)) {
1193 return expectedNumberOfClusters;
1197 //_____________________________________________________________________________
1198 Int_t AliTRDtrackerHLT::FollowBackProlongation(AliTRDtrack &t)
1201 // Starting from current radial position of track <t> this function
1202 // extrapolates the track up to outer timebin and in the sensitive
1203 // layers confirms prolongation if a close cluster is found.
1204 // Returns the number of clusters expected to be found in sensitive layers
1205 // Use GEO manager for material Description
1207 // return number of assigned clusters ?
1212 Int_t clusters[1000];
1213 Double_t radLength = 0.0;
1215 Int_t expectedNumberOfClusters = 0;
1216 Float_t ratio0 = 0.0;
1217 AliTRDtracklet tracklet;
1219 // Calibration fill 2D
1220 AliTRDCalibraFillHisto *calibra = AliTRDCalibraFillHisto::Instance();
1222 AliInfo("Could not get Calibra instance\n");
1224 //this is error prone!!!
1225 if (calibra->GetMITracking()) {
1226 calibra->ResetTrack();
1229 for (Int_t i = 0; i < 1000; i++) {
1233 for (Int_t iplane = 0; iplane < AliESDtrack::kNPlane; iplane++) {
1235 int hb = iplane * 10;
1236 fHClSearch->Fill(hb);
1238 Int_t row0 = GetGlobalTimeBin(0,iplane,GetTimeBinsPerPlane()-1);
1239 Int_t rowlast = GetGlobalTimeBin(0,iplane,0);
1240 Double_t currentx = fTrSec[0]->GetLayer(row0)->GetX();
1241 if (currentx < t.GetX()) {
1242 fHClSearch->Fill(hb+1);
1247 // Propagate closer to chamber if neccessary
1249 if (currentx > (fgkMaxStep + t.GetX())) {
1250 if (!PropagateToX(t,currentx-fgkMaxStep,fgkMaxStep)) {
1251 fHClSearch->Fill(hb+2);
1255 if (!AdjustSector(&t)) {
1256 fHClSearch->Fill(hb+3);
1259 if (TMath::Abs(t.GetSnp()) > fgkMaxSnp) {
1260 fHClSearch->Fill(hb+4);
1265 // Get material budget inside of chamber
1273 // Starting global position
1275 // End global position
1276 x = fTrSec[0]->GetLayer(rowlast)->GetX();
1277 if (!t.GetProlongation(x,y,z)) {
1278 fHClSearch->Fill(hb+5);
1281 xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha());
1282 xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha());
1284 AliKalmanTrack::MeanMaterialBudget(xyz0,xyz1,param);
1286 radLength = param[1]; // Get mean propagation parameters
1291 sector = t.GetSector();
1292 Float_t ncl = FindClusters(sector,row0,rowlast,&t,clusters,tracklet);
1293 fHNCl->Fill(tracklet.GetN());
1295 if (tracklet.GetN() < GetTimeBinsPerPlane()/3) {
1296 fHClSearch->Fill(hb+6);
1301 // Propagate and update track
1303 for (Int_t itime = GetTimeBinsPerPlane()-1; itime >= 0; itime--) {
1305 Int_t ilayer = GetGlobalTimeBin(0, iplane,itime);
1306 expectedNumberOfClusters++;
1307 t.SetNExpected(t.GetNExpected() + 1);
1308 if (t.GetX() > 345.0) {
1309 t.SetNExpectedLast(t.GetNExpectedLast() + 1);
1311 AliTRDpropagationLayerHLT &timeBin = *(fTrSec[sector]->GetLayer(ilayer));
1312 AliTRDcluster *cl = 0;
1314 Double_t maxChi2 = fgkMaxChi2;
1319 if (clusters[ilayer] > 0) {
1320 index = clusters[ilayer];
1321 cl = (AliTRDcluster *)GetCluster(index);
1322 //Double_t h01 = GetTiltFactor(cl); // I.B's fix
1323 //maxChi2=t.GetPredictedChi2(cl,h01); //
1328 //if (cl->GetNPads() < 5)
1329 Double_t dxsample = timeBin.GetdX();
1330 t.SetSampledEdx(TMath::Abs(cl->GetQ()/dxsample));
1331 Double_t h01 = GetTiltFactor(cl);
1332 Int_t det = cl->GetDetector();
1333 Int_t plane = fGeom->GetPlane(det);
1334 if (t.GetX() > 345.0) {
1335 t.SetNLast(t.GetNLast() + 1);
1336 t.SetChi2Last(t.GetChi2Last() + maxChi2);
1338 Double_t xcluster = cl->GetX();
1339 t.PropagateTo(xcluster,radLength,rho);
1340 maxChi2 = t.GetPredictedChi2(cl,h01);
1343 if (!t.UpdateMI(cl,maxChi2,index,h01,plane)) {
1344 if (!t.Update(cl,maxChi2,index,h01)) {
1349 if (calibra->GetMITracking()) {
1350 calibra->UpdateHistograms(cl,&t);
1353 // Reset material budget if 2 consecutive gold
1355 if ((t.GetTracklets(plane).GetN() + t.GetTracklets(plane-1).GetN()) > 20) {
1366 ratio0 = ncl / Float_t(fTimeBinsPerPlane);
1367 Float_t ratio1 = Float_t(t.GetNumberOfClusters()+1) / Float_t(t.GetNExpected()+1);
1368 if ((tracklet.GetChi2() < 18.0) &&
1371 (ratio0+ratio1 > 1.5) &&
1372 (t.GetNCross() == 0) &&
1373 (TMath::Abs(t.GetSnp()) < 0.85) &&
1374 (t.GetNumberOfClusters() > 20)){
1375 //if (ratio0 > 0.8) {
1376 t.MakeBackupTrack(); // Make backup of the track until is gold
1381 return expectedNumberOfClusters;
1384 //_____________________________________________________________________________
1385 Int_t AliTRDtrackerHLT::PropagateToX(AliTRDtrack &t, Double_t xToGo, Double_t maxStep)
1388 // Starting from current radial position of track <t> this function
1389 // extrapolates the track up to radial position <xToGo>.
1390 // Returns 1 if track reaches the plane, and 0 otherwise
1393 const Double_t kEpsilon = 0.00001;
1394 //Double_t tanmax = TMath::Tan(0.5*AliTRDgeometry::GetAlpha());
1395 Double_t xpos = t.GetX();
1396 Double_t dir = (xpos<xToGo) ? 1.0 : -1.0;
1398 while (((xToGo-xpos)*dir) > kEpsilon) {
1400 Double_t step = dir * TMath::Min(TMath::Abs(xToGo-xpos),maxStep);
1408 // Starting global position
1412 if (!t.GetProlongation(x,y,z)) {
1413 return 0; // No prolongation
1416 xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha());
1417 xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha());
1420 AliKalmanTrack::MeanMaterialBudget(xyz0,xyz1,param);
1421 if (!t.PropagateTo(x,param[1],param[0])) {
1433 //_____________________________________________________________________________
1434 Int_t AliTRDtrackerHLT::LoadClusters(TTree *cTree)
1437 // Fills clusters into TRD tracking_sectors
1438 // Note that the numbering scheme for the TRD tracking_sectors
1439 // differs from that of TRD sectors
1442 if (ReadClusters(fClusters,cTree)) {
1443 AliError("Problem with reading the clusters !");
1446 Int_t ncl = fClusters->GetEntriesFast();
1448 AliInfo(Form("Sorting %d clusters",ncl));
1451 for (Int_t ichamber = 0; ichamber < 5; ichamber++) {
1452 for (Int_t isector = 0; isector < 18; isector++) {
1453 fHoles[ichamber][isector] = kTRUE;
1459 AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(ncl);
1460 Int_t detector = c->GetDetector();
1461 Int_t localTimeBin = c->GetLocalTimeBin();
1462 Int_t sector = fGeom->GetSector(detector);
1463 Int_t plane = fGeom->GetPlane(detector);
1464 Int_t trackingSector = sector;
1466 //if (c->GetLabel(0) > 0) {
1467 if (c->GetQ() > 10) {
1468 Int_t chamber = fGeom->GetChamber(detector);
1469 fHoles[chamber][trackingSector] = kFALSE;
1472 Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(plane,localTimeBin);
1476 Int_t layer = fTrSec[trackingSector]->GetLayerNumber(gtb);
1480 // Apply pos correction
1482 fHXCl->Fill(c->GetX());
1484 fTrSec[trackingSector]->GetLayer(layer)->SetX(c->GetX());
1485 fTrSec[trackingSector]->GetLayer(layer)->InsertCluster(c,index);
1492 //_____________________________________________________________________________
1493 void AliTRDtrackerHLT::UnloadClusters()
1496 // Clears the arrays of clusters and tracks. Resets sectors and timebins
1502 nentr = fClusters->GetEntriesFast();
1503 for (i = 0; i < nentr; i++) {
1504 delete fClusters->RemoveAt(i);
1508 nentr = fSeeds->GetEntriesFast();
1509 for (i = 0; i < nentr; i++) {
1510 delete fSeeds->RemoveAt(i);
1513 nentr = fTracks->GetEntriesFast();
1514 for (i = 0; i < nentr; i++) {
1515 delete fTracks->RemoveAt(i);
1518 Int_t nsec = AliTRDgeometry::kNsect;
1519 for (i = 0; i < nsec; i++) {
1520 for(Int_t pl = 0; pl < fTrSec[i]->GetNumberOfLayers(); pl++) {
1521 fTrSec[i]->GetLayer(pl)->Clear();
1527 //_____________________________________________________________________________
1528 void AliTRDtrackerHLT::MakeSeedsMI(Int_t /*inner*/, Int_t /*outer*/, AliESD *esd)
1531 // Creates seeds using clusters between position inner plane and outer plane
1536 const Double_t kMaxTheta = 1.0;
1537 const Double_t kMaxPhi = 2.0;
1539 const Double_t kRoad0y = 6.0; // Road for middle cluster
1540 const Double_t kRoad0z = 8.5; // Road for middle cluster
1542 const Double_t kRoad1y = 2.0; // Road in y for seeded cluster
1543 const Double_t kRoad1z = 20.0; // Road in z for seeded cluster
1545 const Double_t kRoad2y = 3.0; // Road in y for extrapolated cluster
1546 const Double_t kRoad2z = 20.0; // Road in z for extrapolated cluster
1547 const Int_t kMaxSeed = 3000;
1549 Int_t maxSec = AliTRDgeometry::kNsect;
1551 // Linear fitters in planes
1552 TLinearFitter fitterTC(2,"hyp2"); // Fitting with tilting pads - kz fixed - kz= Z/x, + vertex const
1553 TLinearFitter fitterT2(4,"hyp4"); // Fitting with tilting pads - kz not fixed
1554 fitterTC.StoreData(kTRUE);
1555 fitterT2.StoreData(kTRUE);
1556 AliRieman rieman(1000); // Rieman fitter
1557 AliRieman rieman2(1000); // Rieman fitter
1559 // Find the maximal and minimal layer for the planes
1561 AliTRDpropagationLayerHLT *reflayers[6];
1562 for (Int_t i = 0; i < 6; i++) {
1563 layers[i][0] = 10000;
1566 for (Int_t ns = 0; ns < maxSec; ns++) {
1567 for (Int_t ilayer = 0; ilayer < fTrSec[ns]->GetNumberOfLayers(); ilayer++) {
1568 AliTRDpropagationLayerHLT &layer = *(fTrSec[ns]->GetLayer(ilayer));
1572 Int_t det = layer[0]->GetDetector();
1573 Int_t plane = fGeom->GetPlane(det);
1574 if (ilayer < layers[plane][0]) {
1575 layers[plane][0] = ilayer;
1577 if (ilayer > layers[plane][1]) {
1578 layers[plane][1] = ilayer;
1583 AliTRDpadPlane *padPlane = AliTRDCommonParam::Instance()->GetPadPlane(0,0);
1584 Double_t h01 = TMath::Tan(-TMath::Pi() / 180.0 * padPlane->GetTiltingAngle());
1585 Double_t hL[6]; // Tilting angle
1586 Double_t xcl[6]; // X - position of reference cluster
1587 Double_t ycl[6]; // Y - position of reference cluster
1588 Double_t zcl[6]; // Z - position of reference cluster
1590 AliTRDcluster *cl[6] = { 0, 0, 0, 0, 0, 0 }; // Seeding clusters
1591 Float_t padlength[6] = { 10.0, 10.0, 10.0, 10.0, 10.0, 10.0 }; // Current pad-length
1593 Double_t chi2R = 0.0;
1594 Double_t chi2Z = 0.0;
1595 Double_t chi2RF = 0.0;
1596 Double_t chi2ZF = 0.0;
1598 Int_t nclusters; // Total number of clusters
1599 for (Int_t i = 0; i < 6; i++) {
1607 AliTRDseed *pseed = new AliTRDseed[kMaxSeed*6];
1608 AliTRDseed *seed[kMaxSeed];
1609 for (Int_t iseed = 0; iseed < kMaxSeed; iseed++) {
1610 seed[iseed]= &pseed[iseed*6];
1612 AliTRDseed *cseed = seed[0];
1614 Double_t seedquality[kMaxSeed];
1615 Double_t seedquality2[kMaxSeed];
1616 Double_t seedparams[kMaxSeed][7];
1617 Int_t seedlayer[kMaxSeed];
1618 Int_t registered = 0;
1619 Int_t sort[kMaxSeed];
1624 for (Int_t ns = 0; ns < maxSec; ns++) { // Loop over sectors
1625 //for (Int_t ns = 0; ns < 5; ns++) { // Loop over sectors
1627 AliInfo(Form("sector %d", ns));
1629 registered = 0; // Reset registerd seed counter
1630 cseed = seed[registered];
1633 for (Int_t sLayer = 2; sLayer >= 0; sLayer--) {
1634 //for (Int_t dseed = 5; dseed < 15; dseed += 3) {
1636 //AliInfo(Form("sLayer %d", sLayer));
1639 Int_t dseed = 5 + Int_t(iter) * 3;
1641 // Initialize seeding layers
1642 for (Int_t ilayer = 0; ilayer < 6; ilayer++) {
1643 reflayers[ilayer] = fTrSec[ns]->GetLayer(layers[ilayer][1]-dseed);
1644 xcl[ilayer] = reflayers[ilayer]->GetX();
1647 Double_t xref = (xcl[sLayer+1] + xcl[sLayer+2]) * 0.5;
1648 AliTRDpropagationLayerHLT &layer0 = *reflayers[sLayer+0];
1649 AliTRDpropagationLayerHLT &layer1 = *reflayers[sLayer+1];
1650 AliTRDpropagationLayerHLT &layer2 = *reflayers[sLayer+2];
1651 AliTRDpropagationLayerHLT &layer3 = *reflayers[sLayer+3];
1653 Int_t maxn3 = layer3;
1654 for (Int_t icl3 = 0; icl3 < maxn3; icl3++) {
1656 //AliInfo(Form("icl3 %d", icl3));
1658 AliTRDcluster *cl3 = layer3[icl3];
1662 padlength[sLayer+3] = TMath::Sqrt(cl3->GetSigmaZ2() * 12.0);
1663 ycl[sLayer+3] = cl3->GetY();
1664 zcl[sLayer+3] = cl3->GetZ();
1665 Float_t yymin0 = ycl[sLayer+3] - 1.0 - kMaxPhi * (xcl[sLayer+3]-xcl[sLayer+0]);
1666 Float_t yymax0 = ycl[sLayer+3] + 1.0 + kMaxPhi * (xcl[sLayer+3]-xcl[sLayer+0]);
1667 Int_t maxn0 = layer0;
1669 for (Int_t icl0 = layer0.Find(yymin0); icl0 < maxn0; icl0++) {
1671 AliTRDcluster *cl0 = layer0[icl0];
1675 if (cl3->IsUsed() && cl0->IsUsed()) {
1678 ycl[sLayer+0] = cl0->GetY();
1679 zcl[sLayer+0] = cl0->GetZ();
1680 if (ycl[sLayer+0] > yymax0) {
1683 Double_t tanphi = (ycl[sLayer+3]-ycl[sLayer+0]) / (xcl[sLayer+3]-xcl[sLayer+0]);
1684 if (TMath::Abs(tanphi) > kMaxPhi) {
1687 Double_t tantheta = (zcl[sLayer+3]-zcl[sLayer+0]) / (xcl[sLayer+3]-xcl[sLayer+0]);
1688 if (TMath::Abs(tantheta) > kMaxTheta) {
1691 padlength[sLayer+0] = TMath::Sqrt(cl0->GetSigmaZ2() * 12.0);
1693 // Expected position in 1 layer
1694 Double_t y1exp = ycl[sLayer+0] + (tanphi) * (xcl[sLayer+1]-xcl[sLayer+0]);
1695 Double_t z1exp = zcl[sLayer+0] + (tantheta) * (xcl[sLayer+1]-xcl[sLayer+0]);
1696 Float_t yymin1 = y1exp - kRoad0y - tanphi;
1697 Float_t yymax1 = y1exp + kRoad0y + tanphi;
1698 Int_t maxn1 = layer1;
1700 for (Int_t icl1 = layer1.Find(yymin1); icl1 < maxn1; icl1++) {
1702 AliTRDcluster *cl1 = layer1[icl1];
1707 if (cl3->IsUsed()) nusedCl++;
1708 if (cl0->IsUsed()) nusedCl++;
1709 if (cl1->IsUsed()) nusedCl++;
1713 ycl[sLayer+1] = cl1->GetY();
1714 zcl[sLayer+1] = cl1->GetZ();
1715 if (ycl[sLayer+1] > yymax1) {
1718 if (TMath::Abs(ycl[sLayer+1]-y1exp) > kRoad0y+tanphi) {
1721 if (TMath::Abs(zcl[sLayer+1]-z1exp) > kRoad0z) {
1724 padlength[sLayer+1] = TMath::Sqrt(cl1->GetSigmaZ2() * 12.0);
1726 Double_t y2exp = ycl[sLayer+0]+(tanphi) * (xcl[sLayer+2]-xcl[sLayer+0]) + (ycl[sLayer+1]-y1exp);
1727 Double_t z2exp = zcl[sLayer+0]+(tantheta) * (xcl[sLayer+2]-xcl[sLayer+0]);
1728 Int_t index2 = layer2.FindNearestCluster(y2exp,z2exp,kRoad1y,kRoad1z);
1732 AliTRDcluster *cl2 = (AliTRDcluster *) GetCluster(index2);
1733 padlength[sLayer+2] = TMath::Sqrt(cl2->GetSigmaZ2() * 12.0);
1734 ycl[sLayer+2] = cl2->GetY();
1735 zcl[sLayer+2] = cl2->GetZ();
1736 if (TMath::Abs(cl2->GetZ()-z2exp) > kRoad0z) {
1741 rieman.AddPoint(xcl[sLayer+0],ycl[sLayer+0],zcl[sLayer+0],1,10);
1742 rieman.AddPoint(xcl[sLayer+1],ycl[sLayer+1],zcl[sLayer+1],1,10);
1743 rieman.AddPoint(xcl[sLayer+3],ycl[sLayer+3],zcl[sLayer+3],1,10);
1744 rieman.AddPoint(xcl[sLayer+2],ycl[sLayer+2],zcl[sLayer+2],1,10);
1748 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
1749 cseed[iLayer].Reset();
1754 for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
1755 cseed[sLayer+iLayer].SetZref(0,rieman.GetZat(xcl[sLayer+iLayer]));
1756 chi2Z += (cseed[sLayer+iLayer].GetZref(0)- zcl[sLayer+iLayer])
1757 * (cseed[sLayer+iLayer].GetZref(0)- zcl[sLayer+iLayer]);
1758 cseed[sLayer+iLayer].SetZref(1,rieman.GetDZat(xcl[sLayer+iLayer]));
1759 cseed[sLayer+iLayer].SetYref(0,rieman.GetYat(xcl[sLayer+iLayer]));
1760 chi2R += (cseed[sLayer+iLayer].GetYref(0)- ycl[sLayer+iLayer])
1761 * (cseed[sLayer+iLayer].GetYref(0)- ycl[sLayer+iLayer]);
1762 cseed[sLayer+iLayer].SetYref(1,rieman.GetDYat(xcl[sLayer+iLayer]));
1764 if (TMath::Sqrt(chi2R) > 1.0/iter) {
1767 if (TMath::Sqrt(chi2Z) > 7.0/iter) {
1771 Float_t minmax[2] = { -100.0, 100.0 };
1772 for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
1773 Float_t max = zcl[sLayer+iLayer]+padlength[sLayer+iLayer] * 0.5
1774 + 1.0 - cseed[sLayer+iLayer].GetZref(0);
1775 if (max < minmax[1]) {
1778 Float_t min = zcl[sLayer+iLayer]-padlength[sLayer+iLayer] * 0.5
1779 - 1.0 - cseed[sLayer+iLayer].GetZref(0);
1780 if (min > minmax[0]) {
1785 Bool_t isFake = kFALSE;
1786 if (cl0->GetLabel(0) != cl3->GetLabel(0)) {
1789 if (cl1->GetLabel(0) != cl3->GetLabel(0)) {
1792 if (cl2->GetLabel(0) != cl3->GetLabel(0)) {
1796 if (AliTRDReconstructor::StreamLevel() > 0) {
1797 if ((!isFake) || ((icl3%10) == 0)) { // Debugging print
1798 TTreeSRedirector &cstream = *fDebugStreamer;
1800 << "isFake=" << isFake
1806 << "X0=" << xcl[sLayer+0]
1807 << "X1=" << xcl[sLayer+1]
1808 << "X2=" << xcl[sLayer+2]
1809 << "X3=" << xcl[sLayer+3]
1810 << "Y2exp=" << y2exp
1811 << "Z2exp=" << z2exp
1812 << "Chi2R=" << chi2R
1813 << "Chi2Z=" << chi2Z
1814 << "Seed0.=" << &cseed[sLayer+0]
1815 << "Seed1.=" << &cseed[sLayer+1]
1816 << "Seed2.=" << &cseed[sLayer+2]
1817 << "Seed3.=" << &cseed[sLayer+3]
1818 << "Zmin=" << minmax[0]
1819 << "Zmax=" << minmax[1]
1824 AliDebug(2, Form("Fit Seeding part"));
1826 ////////////////////////////////////////////////////////////////////////////////////
1830 ////////////////////////////////////////////////////////////////////////////////////
1836 Bool_t isOK = kTRUE;
1838 for (Int_t jLayer = 0; jLayer < 4; jLayer++) {
1840 cseed[sLayer+jLayer].SetTilt(hL[sLayer+jLayer]);
1841 cseed[sLayer+jLayer].SetPadLength(padlength[sLayer+jLayer]);
1842 cseed[sLayer+jLayer].SetX0(xcl[sLayer+jLayer]);
1844 for (Int_t iter = 0; iter < 2; iter++) {
1847 // In iteration 0 we try only one pad-row
1848 // If quality not sufficient we try 2 pad-rows - about 5% of tracks cross 2 pad-rows
1850 AliTRDseed tseed = cseed[sLayer+jLayer];
1851 Float_t roadz = padlength[sLayer+jLayer] * 0.5;
1853 roadz = padlength[sLayer+jLayer];
1856 Float_t quality = 10000.0;
1858 for (Int_t iTime = 2; iTime < 20; iTime++) {
1860 AliTRDpropagationLayerHLT &layer = *(fTrSec[ns]->GetLayer(layers[sLayer+jLayer][1]-iTime));
1861 Double_t dxlayer = layer.GetX() - xcl[sLayer+jLayer];
1862 Double_t zexp = cl[sLayer+jLayer]->GetZ();
1865 // Try 2 pad-rows in second iteration
1866 zexp = tseed.GetZref(0) + tseed.GetZref(1) * dxlayer;
1867 if (zexp > cl[sLayer+jLayer]->GetZ()) {
1868 zexp = cl[sLayer+jLayer]->GetZ() + padlength[sLayer+jLayer]*0.5;
1870 if (zexp < cl[sLayer+jLayer]->GetZ()) {
1871 zexp = cl[sLayer+jLayer]->GetZ() - padlength[sLayer+jLayer]*0.5;
1875 Double_t yexp = tseed.GetYref(0) + tseed.GetYref(1) * dxlayer;
1876 Int_t index = layer.FindNearestCluster(yexp,zexp,kRoad1y,roadz);
1881 AliTRDcluster *cl = (AliTRDcluster *) GetCluster(index);
1883 tseed.SetIndexes(iTime,index);
1884 tseed.SetClusters(iTime,cl); // Register cluster
1885 tseed.SetX(iTime,dxlayer); // Register cluster
1886 tseed.SetY(iTime,cl->GetY()); // Register cluster
1887 tseed.SetZ(iTime,cl->GetZ()); // Register cluster
1893 // Count the number of clusters and distortions into quality
1894 Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1);
1895 Float_t tquality = (18.0 - tseed.GetN2()) / 2.0 + TMath::Abs(dangle) / 0.1
1896 + TMath::Abs(tseed.GetYfit(0) - tseed.GetYref(0)) / 0.2
1897 + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer];
1898 if ((iter == 0) && tseed.IsOK()) {
1899 cseed[sLayer+jLayer] = tseed;
1905 if (tseed.IsOK() && (tquality < quality)) {
1906 cseed[sLayer+jLayer] = tseed;
1911 if (!cseed[sLayer+jLayer].IsOK()) {
1916 cseed[sLayer+jLayer].CookLabels();
1917 cseed[sLayer+jLayer].UpdateUsed();
1918 nusedCl += cseed[sLayer+jLayer].GetNUsed();
1930 for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
1931 if (cseed[sLayer+iLayer].IsOK()) {
1932 nclusters += cseed[sLayer+iLayer].GetN2();
1938 for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
1939 rieman.AddPoint(xcl[sLayer+iLayer]
1940 ,cseed[sLayer+iLayer].GetYfitR(0)
1941 ,cseed[sLayer+iLayer].GetZProb()
1950 for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
1951 cseed[sLayer+iLayer].SetYref(0,rieman.GetYat(xcl[sLayer+iLayer]));
1952 chi2R += (cseed[sLayer+iLayer].GetYref(0) - cseed[sLayer+iLayer].GetYfitR(0))
1953 * (cseed[sLayer+iLayer].GetYref(0) - cseed[sLayer+iLayer].GetYfitR(0));
1954 cseed[sLayer+iLayer].SetYref(1,rieman.GetDYat(xcl[sLayer+iLayer]));
1955 cseed[sLayer+iLayer].SetZref(0,rieman.GetZat(xcl[sLayer+iLayer]));
1956 chi2Z += (cseed[sLayer+iLayer].GetZref(0) - cseed[sLayer+iLayer].GetMeanz())
1957 * (cseed[sLayer+iLayer].GetZref(0) - cseed[sLayer+iLayer].GetMeanz());
1958 cseed[sLayer+iLayer].SetZref(1,rieman.GetDZat(xcl[sLayer+iLayer]));
1960 Double_t curv = rieman.GetC();
1965 Double_t sumda = TMath::Abs(cseed[sLayer+0].GetYfitR(1) - cseed[sLayer+0].GetYref(1))
1966 + TMath::Abs(cseed[sLayer+1].GetYfitR(1) - cseed[sLayer+1].GetYref(1))
1967 + TMath::Abs(cseed[sLayer+2].GetYfitR(1) - cseed[sLayer+2].GetYref(1))
1968 + TMath::Abs(cseed[sLayer+3].GetYfitR(1) - cseed[sLayer+3].GetYref(1));
1969 Double_t likea = TMath::Exp(-sumda*10.6);
1970 Double_t likechi2 = 0.0000000001;
1972 likechi2 += TMath::Exp(-TMath::Sqrt(chi2R) * 7.73);
1974 Double_t likechi2z = TMath::Exp(-chi2Z * 0.088) / TMath::Exp(-chi2Z * 0.019);
1975 Double_t likeN = TMath::Exp(-(72 - nclusters) * 0.19);
1976 Double_t like = likea * likechi2 * likechi2z * likeN;
1977 Double_t likePrimY = TMath::Exp(-TMath::Abs(cseed[sLayer+0].GetYref(1) - 130.0*curv) * 1.9);
1978 Double_t likePrimZ = TMath::Exp(-TMath::Abs(cseed[sLayer+0].GetZref(1)
1979 - cseed[sLayer+0].GetZref(0) / xcl[sLayer+0]) * 5.9);
1980 Double_t likePrim = TMath::Max(likePrimY*likePrimZ,0.0005);
1982 seedquality[registered] = like;
1983 seedlayer[registered] = sLayer;
1984 if (TMath::Log(0.000000000000001 + like) < -15) {
1987 AliTRDseed seedb[6];
1988 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
1989 seedb[iLayer] = cseed[iLayer];
1992 AliDebug(2, Form("never here? FULL TRACK FIT PART START"));
1994 ////////////////////////////////////////////////////////////////////////////////////
1996 // Full track fit part
1998 ////////////////////////////////////////////////////////////////////////////////////
2005 // Add new layers - avoid long extrapolation
2007 Int_t tLayer[2] = { 0, 0 };
2021 for (Int_t iLayer = 0; iLayer < 2; iLayer++) {
2022 Int_t jLayer = tLayer[iLayer]; // Set tracking layer
2023 cseed[jLayer].Reset();
2024 cseed[jLayer].SetTilt(hL[jLayer]);
2025 cseed[jLayer].SetPadLength(padlength[jLayer]);
2026 cseed[jLayer].SetX0(xcl[jLayer]);
2027 // Get pad length and rough cluster
2028 Int_t indexdummy = reflayers[jLayer]->FindNearestCluster(cseed[jLayer].GetYref(0)
2029 ,cseed[jLayer].GetZref(0)
2032 if (indexdummy <= 0) {
2035 AliTRDcluster *cldummy = (AliTRDcluster *) GetCluster(indexdummy);
2036 padlength[jLayer] = TMath::Sqrt(cldummy->GetSigmaZ2() * 12.0);
2038 AliTRDseed::FitRiemanTilt(cseed,kTRUE);
2040 for (Int_t iLayer = 0; iLayer < 2; iLayer++) {
2042 Int_t jLayer = tLayer[iLayer]; // set tracking layer
2043 if ((jLayer == 0) && !(cseed[1].IsOK())) {
2044 continue; // break not allowed
2046 if ((jLayer == 5) && !(cseed[4].IsOK())) {
2047 continue; // break not allowed
2049 Float_t zexp = cseed[jLayer].GetZref(0);
2050 Double_t zroad = padlength[jLayer] * 0.5 + 1.0;
2052 for (Int_t iter = 0; iter < 2; iter++) {
2054 AliTRDseed tseed = cseed[jLayer];
2055 Float_t quality = 10000.0;
2057 for (Int_t iTime = 2; iTime < 20; iTime++) {
2058 AliTRDpropagationLayerHLT &layer = *(fTrSec[ns]->GetLayer(layers[jLayer][1]-iTime));
2059 Double_t dxlayer = layer.GetX()-xcl[jLayer];
2060 Double_t yexp = tseed.GetYref(0) + tseed.GetYref(1) * dxlayer;
2061 Float_t yroad = kRoad1y;
2062 Int_t index = layer.FindNearestCluster(yexp,zexp,yroad,zroad);
2066 AliTRDcluster *cl = (AliTRDcluster *) GetCluster(index);
2067 tseed.SetIndexes(iTime,index);
2068 tseed.SetClusters(iTime,cl); // Register cluster
2069 tseed.SetX(iTime,dxlayer); // Register cluster
2070 tseed.SetY(iTime,cl->GetY()); // Register cluster
2071 tseed.SetZ(iTime,cl->GetZ()); // Register cluster
2076 Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1);
2077 Float_t tquality = (18.0 - tseed.GetN2())/2.0 + TMath::Abs(dangle) / 0.1
2078 + TMath::Abs(tseed.GetYfit(0) - tseed.GetYref(0)) / 0.2
2079 + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer];
2080 if (tquality < quality) {
2081 cseed[jLayer] = tseed;
2090 if ( cseed[jLayer].IsOK()) {
2091 cseed[jLayer].CookLabels();
2092 cseed[jLayer].UpdateUsed();
2093 nusedf += cseed[jLayer].GetNUsed();
2094 AliTRDseed::FitRiemanTilt(cseed,kTRUE);
2100 AliTRDseed bseed[6];
2101 for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
2102 bseed[jLayer] = cseed[jLayer];
2104 Float_t lastquality = 10000.0;
2105 Float_t lastchi2 = 10000.0;
2106 Float_t chi2 = 1000.0;
2108 for (Int_t iter = 0; iter < 4; iter++) {
2110 // Sort tracklets according "quality", try to "improve" 4 worst
2111 Float_t sumquality = 0.0;
2112 Float_t squality[6];
2113 Int_t sortindexes[6];
2115 for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
2116 if (bseed[jLayer].IsOK()) {
2117 AliTRDseed &tseed = bseed[jLayer];
2118 Double_t zcor = tseed.GetTilt() * (tseed.GetZProb() - tseed.GetZref(0));
2119 Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1);
2120 Float_t tquality = (18.0 - tseed.GetN2()) / 2.0 + TMath::Abs(dangle) / 0.1
2121 + TMath::Abs(tseed.GetYfit(0) - (tseed.GetYref(0) - zcor)) / 0.2
2122 + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer];
2123 squality[jLayer] = tquality;
2126 squality[jLayer] = -1.0;
2128 sumquality +=squality[jLayer];
2131 if ((sumquality >= lastquality) ||
2132 (chi2 > lastchi2)) {
2135 lastquality = sumquality;
2138 for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
2139 cseed[jLayer] = bseed[jLayer];
2142 TMath::Sort(6,squality,sortindexes,kFALSE);
2144 for (Int_t jLayer = 5; jLayer > 1; jLayer--) {
2146 Int_t bLayer = sortindexes[jLayer];
2147 AliTRDseed tseed = bseed[bLayer];
2149 for (Int_t iTime = 2; iTime < 20; iTime++) {
2151 AliTRDpropagationLayerHLT &layer = *(fTrSec[ns]->GetLayer(layers[bLayer][1]-iTime));
2152 Double_t dxlayer = layer.GetX() - xcl[bLayer];
2153 Double_t zexp = tseed.GetZref(0);
2154 Double_t zcor = tseed.GetTilt() * (tseed.GetZProb() - tseed.GetZref(0));
2155 Float_t roadz = padlength[bLayer] + 1;
2156 if (TMath::Abs(tseed.GetZProb() - zexp) > 0.5*padlength[bLayer]) {
2157 roadz = padlength[bLayer] * 0.5;
2159 if (tseed.GetZfit(1)*tseed.GetZref(1) < 0.0) {
2160 roadz = padlength[bLayer] * 0.5;
2162 if (TMath::Abs(tseed.GetZProb() - zexp) < 0.1*padlength[bLayer]) {
2163 zexp = tseed.GetZProb();
2164 roadz = padlength[bLayer] * 0.5;
2167 Double_t yexp = tseed.GetYref(0) + tseed.GetYref(1) * dxlayer - zcor;
2168 Int_t index = layer.FindNearestCluster(yexp,zexp,kRoad1y,roadz);
2172 AliTRDcluster *cl = (AliTRDcluster *) GetCluster(index);
2174 tseed.SetIndexes(iTime,index);
2175 tseed.SetClusters(iTime,cl); // Register cluster
2176 tseed.SetX(iTime,dxlayer); // Register cluster
2177 tseed.SetY(iTime,cl->GetY()); // Register cluster
2178 tseed.SetZ(iTime,cl->GetZ()); // Register cluster
2184 Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1);
2185 Double_t zcor = tseed.GetTilt() * (tseed.GetZProb() - tseed.GetZref(0));
2186 Float_t tquality = (18.0 - tseed.GetN2()) / 2.0
2187 + TMath::Abs(dangle) / 0.1
2188 + TMath::Abs(tseed.GetYfit(0) - (tseed.GetYref(0) - zcor)) / 0.2
2189 + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer];
2190 if (tquality<squality[bLayer]) {
2191 bseed[bLayer] = tseed;
2197 chi2 = AliTRDseed::FitRiemanTilt(bseed,kTRUE);
2204 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2205 if (TMath::Abs(cseed[iLayer].GetYref(0) / cseed[iLayer].GetX0()) < 0.15) {
2208 if (cseed[iLayer].IsOK()) {
2209 nclusters += cseed[iLayer].GetN2();
2217 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2218 if (cseed[iLayer].IsOK()) {
2219 rieman.AddPoint(xcl[iLayer]
2220 ,cseed[iLayer].GetYfitR(0)
2221 ,cseed[iLayer].GetZProb()
2230 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2231 if (cseed[iLayer].IsOK()) {
2232 cseed[iLayer].SetYref(0,rieman.GetYat(xcl[iLayer]));
2233 chi2RF += (cseed[iLayer].GetYref(0) - cseed[iLayer].GetYfitR(0))
2234 * (cseed[iLayer].GetYref(0) - cseed[iLayer].GetYfitR(0));
2235 cseed[iLayer].SetYref(1,rieman.GetDYat(xcl[iLayer]));
2236 cseed[iLayer].SetZref(0,rieman.GetZat(xcl[iLayer]));
2237 chi2ZF += (cseed[iLayer].GetZref(0) - cseed[iLayer].GetMeanz())
2238 * (cseed[iLayer].GetZref(0) - cseed[iLayer].GetMeanz());
2239 cseed[iLayer].SetZref(1,rieman.GetDZat(xcl[iLayer]));
2242 chi2RF /= TMath::Max((nlayers - 3.0),1.0);
2243 chi2ZF /= TMath::Max((nlayers - 3.0),1.0);
2244 curv = rieman.GetC();
2246 Double_t xref2 = (xcl[2] + xcl[3]) * 0.5; // Middle of the chamber
2247 Double_t dzmf = rieman.GetDZat(xref2);
2248 Double_t zmf = rieman.GetZat(xref2);
2254 fitterTC.ClearPoints();
2255 fitterT2.ClearPoints();
2258 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2260 if (!cseed[iLayer].IsOK()) {
2264 for (Int_t itime = 0; itime < 25; itime++) {
2266 if (!cseed[iLayer].IsUsable(itime)) {
2269 // X relative to the middle chamber
2270 Double_t x = cseed[iLayer].GetX(itime) + cseed[iLayer].GetX0() - xref2;
2271 Double_t y = cseed[iLayer].GetY(itime);
2272 Double_t z = cseed[iLayer].GetZ(itime);
2273 // ExB correction to the correction
2277 Double_t x2 = cseed[iLayer].GetX(itime) + cseed[iLayer].GetX0();
2278 Double_t t = 1.0 / (x2*x2 + y*y);
2280 uvt[0] = 2.0 * x2 * uvt[1]; // u
2281 uvt[2] = 2.0 * hL[iLayer] * uvt[1];
2282 uvt[3] = 2.0 * hL[iLayer] * x * uvt[1];
2283 uvt[4] = 2.0 * (y + hL[iLayer]*z) * uvt[1];
2284 Double_t error = 2.0 * 0.2 * uvt[1];
2285 fitterT2.AddPoint(uvt,uvt[4],error);
2288 // Constrained rieman
2290 z = cseed[iLayer].GetZ(itime);
2291 uvt[0] = 2.0 * x2 * t; // u
2292 uvt[1] = 2.0 * hL[iLayer] * x2 * uvt[1];
2293 uvt[2] = 2.0 * (y + hL[iLayer] * (z - GetZ())) * t;
2294 fitterTC.AddPoint(uvt,uvt[2],error);
2295 rieman2.AddPoint(x2,y,z,1,10);
2305 Double_t rpolz0 = fitterT2.GetParameter(3);
2306 Double_t rpolz1 = fitterT2.GetParameter(4);
2309 // Linear fitter - not possible to make boundaries
2310 // Do not accept non possible z and dzdx combinations
2312 Bool_t acceptablez = kTRUE;
2313 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2314 if (cseed[iLayer].IsOK()) {
2315 Double_t zT2 = rpolz0 + rpolz1 * (xcl[iLayer] - xref2);
2316 if (TMath::Abs(cseed[iLayer].GetZProb() - zT2) > padlength[iLayer] * 0.5 + 1.0) {
2317 acceptablez = kFALSE;
2322 fitterT2.FixParameter(3,zmf);
2323 fitterT2.FixParameter(4,dzmf);
2325 fitterT2.ReleaseParameter(3);
2326 fitterT2.ReleaseParameter(4);
2327 rpolz0 = fitterT2.GetParameter(3);
2328 rpolz1 = fitterT2.GetParameter(4);
2331 Double_t chi2TR = fitterT2.GetChisquare() / Float_t(npointsT);
2332 Double_t chi2TC = fitterTC.GetChisquare() / Float_t(npointsT);
2333 Double_t polz1c = fitterTC.GetParameter(2);
2334 Double_t polz0c = polz1c * xref2;
2335 Double_t aC = fitterTC.GetParameter(0);
2336 Double_t bC = fitterTC.GetParameter(1);
2337 Double_t cC = aC / TMath::Sqrt(bC * bC + 1.0); // Curvature
2338 Double_t aR = fitterT2.GetParameter(0);
2339 Double_t bR = fitterT2.GetParameter(1);
2340 Double_t dR = fitterT2.GetParameter(2);
2341 Double_t cR = 1.0 + bR*bR - dR*aR;
2344 dca = -dR / (TMath::Sqrt(1.0 + bR*bR - dR*aR) + TMath::Sqrt(1.0 + bR*bR));
2345 cR = aR / TMath::Sqrt(cR);
2348 Double_t chi2ZT2 = 0.0;
2349 Double_t chi2ZTC = 0.0;
2350 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2351 if (cseed[iLayer].IsOK()) {
2352 Double_t zT2 = rpolz0 + rpolz1 * (xcl[iLayer] - xref2);
2353 Double_t zTC = polz0c + polz1c * (xcl[iLayer] - xref2);
2354 chi2ZT2 += TMath::Abs(cseed[iLayer].GetMeanz() - zT2);
2355 chi2ZTC += TMath::Abs(cseed[iLayer].GetMeanz() - zTC);
2358 chi2ZT2 /= TMath::Max((nlayers - 3.0),1.0);
2359 chi2ZTC /= TMath::Max((nlayers - 3.0),1.0);
2361 AliTRDseed::FitRiemanTilt(cseed,kTRUE);
2362 Float_t sumdaf = 0.0;
2363 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2364 if (cseed[iLayer].IsOK()) {
2365 sumdaf += TMath::Abs((cseed[iLayer].GetYfit(1) - cseed[iLayer].GetYref(1))
2366 / cseed[iLayer].GetSigmaY2());
2369 sumdaf /= Float_t (nlayers - 2.0);
2372 // Likelihoods for full track
2374 Double_t likezf = TMath::Exp(-chi2ZF * 0.14);
2375 Double_t likechi2C = TMath::Exp(-chi2TC * 0.677);
2376 Double_t likechi2TR = TMath::Exp(-chi2TR * 0.78);
2377 Double_t likeaf = TMath::Exp(-sumdaf * 3.23);
2378 seedquality2[registered] = likezf * likechi2TR * likeaf;
2380 // Still needed ????
2381 // Bool_t isGold = kFALSE;
2383 // if (nlayers == 6 && TMath::Log(0.000000001+seedquality2[index])<-5.) isGold =kTRUE; // gold
2384 // if (nlayers == findable && TMath::Log(0.000000001+seedquality2[index])<-4.) isGold =kTRUE; // gold
2385 // if (isGold &&nusedf<10){
2386 // for (Int_t jLayer=0;jLayer<6;jLayer++){
2387 // if ( seed[index][jLayer].IsOK()&&TMath::Abs(seed[index][jLayer].fYfit[1]-seed[index][jLayer].fYfit[1])<0.1)
2388 // seed[index][jLayer].UseClusters(); //sign gold
2393 if (!cseed[0].IsOK()) {
2395 if (!cseed[1].IsOK()) {
2399 seedparams[registered][0] = cseed[index0].GetX0();
2400 seedparams[registered][1] = cseed[index0].GetYref(0);
2401 seedparams[registered][2] = cseed[index0].GetZref(0);
2402 seedparams[registered][5] = cR;
2403 seedparams[registered][3] = cseed[index0].GetX0() * cR - TMath::Sin(TMath::ATan(cseed[0].GetYref(1)));
2404 seedparams[registered][4] = cseed[index0].GetZref(1)
2405 / TMath::Sqrt(1.0 + cseed[index0].GetYref(1) * cseed[index0].GetYref(1));
2406 seedparams[registered][6] = ns;
2411 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2412 if (!cseed[iLayer].IsOK()) {
2415 if (cseed[iLayer].GetLabels(0) >= 0) {
2416 labels[nlab] = cseed[iLayer].GetLabels(0);
2419 if (cseed[iLayer].GetLabels(1) >= 0) {
2420 labels[nlab] = cseed[iLayer].GetLabels(1);
2424 Freq(nlab,labels,outlab,kFALSE);
2425 Int_t label = outlab[0];
2426 Int_t frequency = outlab[1];
2427 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2428 cseed[iLayer].SetFreq(frequency);
2429 cseed[iLayer].SetC(cR);
2430 cseed[iLayer].SetCC(cC);
2431 cseed[iLayer].SetChi2(chi2TR);
2432 cseed[iLayer].SetChi2Z(chi2ZF);
2436 if (1 || (!isFake)) {
2437 Float_t zvertex = GetZ();
2438 TTreeSRedirector &cstream = *fDebugStreamer;
2439 if (AliTRDReconstructor::StreamLevel() > 0) {
2441 << "isFake=" << isFake
2442 << "Vertex=" << zvertex
2443 << "Rieman2.=" << &rieman2
2444 << "Rieman.=" << &rieman
2452 << "Chi2R=" << chi2R
2453 << "Chi2Z=" << chi2Z
2454 << "Chi2RF=" << chi2RF // Chi2 of trackletes on full track
2455 << "Chi2ZF=" << chi2ZF // Chi2 z on tracklets on full track
2456 << "Chi2ZT2=" << chi2ZT2 // Chi2 z on tracklets on full track - rieman tilt
2457 << "Chi2ZTC=" << chi2ZTC // Chi2 z on tracklets on full track - rieman tilt const
2458 << "Chi2TR=" << chi2TR // Chi2 without vertex constrain
2459 << "Chi2TC=" << chi2TC // Chi2 with vertex constrain
2460 << "C=" << curv // Non constrained - no tilt correction
2461 << "DR=" << dR // DR parameter - tilt correction
2462 << "DCA=" << dca // DCA - tilt correction
2463 << "CR=" << cR // Non constrained curvature - tilt correction
2464 << "CC=" << cC // Constrained curvature
2465 << "Polz0=" << polz0c
2466 << "Polz1=" << polz1c
2467 << "RPolz0=" << rpolz0
2468 << "RPolz1=" << rpolz1
2469 << "Ncl=" << nclusters
2470 << "Nlayers=" << nlayers
2471 << "NUsedS=" << nusedCl
2472 << "NUsed=" << nusedf
2473 << "Findable=" << findable
2475 << "LikePrim=" << likePrim
2476 << "Likechi2C=" << likechi2C
2477 << "Likechi2TR=" << likechi2TR
2478 << "Likezf=" << likezf
2479 << "LikeF=" << seedquality2[registered]
2480 << "S0.=" << &cseed[0]
2481 << "S1.=" << &cseed[1]
2482 << "S2.=" << &cseed[2]
2483 << "S3.=" << &cseed[3]
2484 << "S4.=" << &cseed[4]
2485 << "S5.=" << &cseed[5]
2486 << "SB0.=" << &seedb[0]
2487 << "SB1.=" << &seedb[1]
2488 << "SB2.=" << &seedb[2]
2489 << "SB3.=" << &seedb[3]
2490 << "SB4.=" << &seedb[4]
2491 << "SB5.=" << &seedb[5]
2492 << "Label=" << label
2493 << "Freq=" << frequency
2494 << "sLayer=" << sLayer
2499 if (registered<kMaxSeed - 1) {
2501 cseed = seed[registered];
2504 } // End of loop over layer 1
2506 } // End of loop over layer 0
2508 } // End of loop over layer 3
2510 } // End of loop over seeding time bins
2512 AliDebug(2, Form("N registered = %d", registered));
2518 TMath::Sort(registered,seedquality2,sort,kTRUE);
2519 Bool_t signedseed[kMaxSeed];
2520 for (Int_t i = 0; i < registered; i++) {
2521 signedseed[i] = kFALSE;
2524 for (Int_t iter = 0; iter < 5; iter++) {
2526 for (Int_t iseed = 0; iseed < registered; iseed++) {
2528 Int_t index = sort[iseed];
2529 if (signedseed[index]) {
2532 Int_t labelsall[1000];
2533 Int_t nlabelsall = 0;
2534 Int_t naccepted = 0;;
2535 Int_t sLayer = seedlayer[index];
2541 for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
2543 if (TMath::Abs(seed[index][jLayer].GetYref(0) / xcl[jLayer]) < 0.15) {
2546 if (seed[index][jLayer].IsOK()) {
2547 seed[index][jLayer].UpdateUsed();
2548 ncl +=seed[index][jLayer].GetN2();
2549 nused +=seed[index][jLayer].GetNUsed();
2552 for (Int_t itime = 0; itime < 25; itime++) {
2553 if (seed[index][jLayer].IsUsable(itime)) {
2555 for (Int_t ilab = 0; ilab < 3; ilab++) {
2556 Int_t tindex = seed[index][jLayer].GetClusters(itime)->GetLabel(ilab);
2558 labelsall[nlabelsall] = tindex;
2576 if (TMath::Log(0.000000001+seedquality2[index]) < -5.0) {
2582 if (nlayers < findable) {
2585 if (TMath::Log(0.000000001+seedquality2[index]) < -4.0) {
2591 if ((nlayers == findable) ||
2595 if (TMath::Log(0.000000001+seedquality2[index]) < -6.0) {
2601 if (TMath::Log(0.000000001+seedquality2[index]) < -5.0) {
2607 if (TMath::Log(0.000000001+seedquality2[index]) - nused/(nlayers-3.0) < -15.0) {
2612 signedseed[index] = kTRUE;
2617 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
2618 if (seed[index][iLayer].IsOK()) {
2619 if (seed[index][iLayer].GetLabels(0) >= 0) {
2620 labels[nlab] = seed[index][iLayer].GetLabels(0);
2623 if (seed[index][iLayer].GetLabels(1) >= 0) {
2624 labels[nlab] = seed[index][iLayer].GetLabels(1);
2629 Freq(nlab,labels,outlab,kFALSE);
2630 Int_t label = outlab[0];
2631 Int_t frequency = outlab[1];
2632 Freq(nlabelsall,labelsall,outlab,kFALSE);
2633 Int_t label1 = outlab[0];
2634 Int_t label2 = outlab[2];
2635 Float_t fakeratio = (naccepted - outlab[1]) / Float_t(naccepted);
2636 Float_t ratio = Float_t(nused) / Float_t(ncl);
2638 for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
2639 if ((seed[index][jLayer].IsOK()) &&
2640 (TMath::Abs(seed[index][jLayer].GetYfit(1) - seed[index][jLayer].GetYfit(1)) < 0.2)) {
2641 seed[index][jLayer].UseClusters(); // Sign gold
2646 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.
2647 TTreeSRedirector &cstream = *fDebugStreamer;
2649 AliDebug(2, Form("Register seed %d", index));
2654 AliTRDtrack *track = RegisterSeed(seed[index],seedparams[index]);
2657 AliWarning(Form("register seed returned 0%x", track));
2661 AliESDtrack esdtrack;
2662 esdtrack.UpdateTrackParams(track,AliESDtrack::kTRDout);
2663 esdtrack.SetLabel(label);
2664 esd->AddTrack(&esdtrack);
2665 TTreeSRedirector &cstream = *fDebugStreamer;
2666 if (AliTRDReconstructor::StreamLevel() > 0) {
2668 << "EventNrInFile=" << eventNrInFile
2669 << "ESD.=" << &esdtrack
2671 << "trdback.=" << track
2676 if (AliTRDReconstructor::StreamLevel() > 0) {
2679 << "Track.=" << track
2680 << "Like=" << seedquality[index]
2681 << "LikeF=" << seedquality2[index]
2682 << "S0.=" << &seed[index][0]
2683 << "S1.=" << &seed[index][1]
2684 << "S2.=" << &seed[index][2]
2685 << "S3.=" << &seed[index][3]
2686 << "S4.=" << &seed[index][4]
2687 << "S5.=" << &seed[index][5]
2688 << "Label=" << label
2689 << "Label1=" << label1
2690 << "Label2=" << label2
2691 << "FakeRatio=" << fakeratio
2692 << "Freq=" << frequency
2694 << "Nlayers=" << nlayers
2695 << "Findable=" << findable
2696 << "NUsed=" << nused
2697 << "sLayer=" << sLayer
2698 << "EventNrInFile=" << eventNrInFile
2706 } // End of loop over sectors
2712 //_____________________________________________________________________________
2713 Int_t AliTRDtrackerHLT::ReadClusters(TObjArray *array, TTree *clusterTree) const
2716 // Reads AliTRDclusters (option >= 0) or AliTRDrecPoints (option < 0)
2717 // from the file. The names of the cluster tree and branches
2718 // should match the ones used in AliTRDclusterizer::WriteClusters()
2721 Int_t nsize = Int_t(clusterTree->GetTotBytes() / (sizeof(AliTRDcluster)));
2722 TObjArray *clusterArray = new TObjArray(nsize+1000);
2724 TBranch *branch = clusterTree->GetBranch("TRDcluster");
2726 AliError("Can't get the branch !");
2729 branch->SetAddress(&clusterArray);
2731 // Loop through all entries in the tree
2732 Int_t nEntries = (Int_t) clusterTree->GetEntries();
2734 AliTRDcluster *c = 0;
2735 for (Int_t iEntry = 0; iEntry < nEntries; iEntry++) {
2738 nbytes += clusterTree->GetEvent(iEntry);
2740 // Get the number of points in the detector
2741 Int_t nCluster = clusterArray->GetEntriesFast();
2743 // Loop through all TRD digits
2744 for (Int_t iCluster = 0; iCluster < nCluster; iCluster++) {
2745 c = (AliTRDcluster *) clusterArray->UncheckedAt(iCluster);
2746 AliTRDcluster *co = c;
2748 clusterArray->RemoveAt(iCluster);
2753 delete clusterArray;
2759 //_____________________________________________________________________________
2760 Bool_t AliTRDtrackerHLT::GetTrackPoint(Int_t index, AliTrackPoint &p) const
2763 // Get track space point with index i
2764 // Origin: C.Cheshkov
2767 AliTRDcluster *cl = (AliTRDcluster *) fClusters->UncheckedAt(index);
2768 Int_t idet = cl->GetDetector();
2769 Int_t isector = fGeom->GetSector(idet);
2770 Int_t ichamber = fGeom->GetChamber(idet);
2771 Int_t iplan = fGeom->GetPlane(idet);
2773 local[0] = GetX(isector,iplan,cl->GetLocalTimeBin());
2774 local[1] = cl->GetY();
2775 local[2] = cl->GetZ();
2777 fGeom->RotateBack(idet,local,global);
2778 p.SetXYZ(global[0],global[1],global[2]);
2779 AliGeomManager::ELayerID iLayer = AliGeomManager::kTRD1;
2782 iLayer = AliGeomManager::kTRD1;
2785 iLayer = AliGeomManager::kTRD2;
2788 iLayer = AliGeomManager::kTRD3;
2791 iLayer = AliGeomManager::kTRD4;
2794 iLayer = AliGeomManager::kTRD5;
2797 iLayer = AliGeomManager::kTRD6;
2800 Int_t modId = isector * fGeom->Ncham() + ichamber;
2801 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,modId);
2802 p.SetVolumeID(volid);
2808 //_____________________________________________________________________________
2809 void AliTRDtrackerHLT::CookLabel(AliKalmanTrack *pt, Float_t wrong) const
2812 // This cooks a label. Mmmmh, smells good...
2815 Int_t label = 123456789;
2819 Int_t ncl = pt->GetNumberOfClusters();
2821 const Int_t kRange = fTrSec[0]->GetOuterTimeBin() + 1;
2825 Int_t **s = new Int_t* [kRange];
2826 for (i = 0; i < kRange; i++) {
2827 s[i] = new Int_t[2];
2829 for (i = 0; i < kRange; i++) {
2838 for (i = 0; i < ncl; i++) {
2839 index = pt->GetClusterIndex(i);
2840 AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index);
2846 for (i = 0; i < ncl; i++) {
2847 index = pt->GetClusterIndex(i);
2848 AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index);
2849 for (Int_t k = 0; k < 3; k++) {
2850 label = c->GetLabel(k);
2851 labelAdded = kFALSE;
2854 while ((!labelAdded) && (j < kRange)) {
2855 if ((s[j][0] == label) ||
2858 s[j][1] = s[j][1] + 1;
2870 for (i = 0; i < kRange; i++) {
2871 if (s[i][1] > max) {
2877 for (i = 0; i < kRange; i++) {
2883 if ((1.0 - Float_t(max)/ncl) > wrong) {
2887 pt->SetLabel(label);
2891 //_____________________________________________________________________________
2892 void AliTRDtrackerHLT::UseClusters(const AliKalmanTrack *t, Int_t from) const
2895 // Use clusters, but don't abuse them!
2898 const Float_t kmaxchi2 = 18;
2899 const Float_t kmincl = 10;
2901 AliTRDtrack *track = (AliTRDtrack *) t;
2903 Int_t ncl = t->GetNumberOfClusters();
2904 for (Int_t i = from; i < ncl; i++) {
2905 Int_t index = t->GetClusterIndex(i);
2906 AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index);
2907 Int_t iplane = fGeom->GetPlane(c->GetDetector());
2908 if (track->GetTracklets(iplane).GetChi2() > kmaxchi2) {
2911 if (track->GetTracklets(iplane).GetN() < kmincl) {
2914 if (!(c->IsUsed())) {
2921 //_____________________________________________________________________________
2922 Double_t AliTRDtrackerHLT::ExpectedSigmaY2(Double_t , Double_t , Double_t ) const
2925 // Parametrised "expected" error of the cluster reconstruction in Y
2928 Double_t s = 0.08 * 0.08;
2933 //_____________________________________________________________________________
2934 Double_t AliTRDtrackerHLT::ExpectedSigmaZ2(Double_t , Double_t ) const
2937 // Parametrised "expected" error of the cluster reconstruction in Z
2940 Double_t s = 9.0 * 9.0 / 12.0;
2945 //_____________________________________________________________________________
2946 Double_t AliTRDtrackerHLT::GetX(Int_t sector, Int_t plane, Int_t localTB) const
2949 // Returns radial position which corresponds to time bin <localTB>
2950 // in tracking sector <sector> and plane <plane>
2953 Int_t index = fTrSec[sector]->CookTimeBinIndex(plane, localTB);
2954 Int_t pl = fTrSec[sector]->GetLayerNumber(index);
2956 return fTrSec[sector]->GetLayer(pl)->GetX();
2960 //_____________________________________________________________________________
2961 AliTRDpropagationLayerHLT
2962 ::AliTRDpropagationLayerHLT(Double_t x, Double_t dx, Double_t rho
2963 , Double_t radLength, Int_t tbIndex, Int_t plane)
2972 ,fTimeBinIndex(tbIndex)
2985 // AliTRDpropagationLayerHLT constructor
2988 for (Int_t i = 0; i < (Int_t) AliTRDtrackingHLT::kZones; i++) {
2993 if (fTimeBinIndex >= 0) {
2994 fClusters = new AliTRDcluster*[AliTRDtrackingHLT::kMaxClusterPerTimeBin];
2995 fIndex = new UInt_t[AliTRDtrackingHLT::kMaxClusterPerTimeBin];
2998 for (Int_t i = 0; i < 5; i++) {
2999 fIsHole[i] = kFALSE;
3004 //_____________________________________________________________________________
3005 void AliTRDpropagationLayerHLT
3006 ::SetHole(Double_t Zmax, Double_t Ymax, Double_t rho
3007 , Double_t radLength, Double_t Yc, Double_t Zc)
3010 // Sets hole in the layer
3019 fHoleX0 = radLength;
3023 //_____________________________________________________________________________
3024 AliTRDtrackingSectorHLT
3025 ::AliTRDtrackingSectorHLT(AliTRDgeometry *geo, Int_t gs)
3031 // AliTRDtrackingSectorHLT Constructor
3034 AliTRDpadPlane *padPlane = 0;
3035 AliTRDpropagationLayerHLT *ppl = 0;
3037 // Get holes description from geometry
3038 Bool_t holes[AliTRDgeometry::kNcham];
3039 for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) {
3040 holes[icham] = fGeom->IsHole(0,icham,gs);
3043 for (UInt_t i = 0; i < AliTRDtrackingHLT::kMaxTimeBinIndex; i++) {
3044 fTimeBinIndex[i] = -1;
3052 // Add layers for each of the planes
3053 Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region
3054 //Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region
3056 const Int_t kNchambers = AliTRDgeometry::Ncham();
3059 Double_t ymaxsensitive = 0;
3060 Double_t *zc = new Double_t[kNchambers];
3061 Double_t *zmax = new Double_t[kNchambers];
3062 Double_t *zmaxsensitive = new Double_t[kNchambers];
3064 AliTRDCommonParam *commonParam = AliTRDCommonParam::Instance();
3066 AliErrorGeneral("AliTRDtrackingSectorHLT::Ctor"
3067 ,"Could not get common parameters\n");
3071 for (Int_t plane = 0; plane < AliTRDgeometry::Nplan(); plane++) {
3073 ymax = fGeom->GetChamberWidth(plane) / 2.0;
3074 padPlane = commonParam->GetPadPlane(plane,0);
3075 ymaxsensitive = (padPlane->GetColSize(1) * padPlane->GetNcols() - 4.0) / 2.0;
3077 for (Int_t ch = 0; ch < kNchambers; ch++) {
3078 zmax[ch] = fGeom->GetChamberLength(plane,ch) / 2.0;
3079 Float_t pad = padPlane->GetRowSize(1);
3080 Float_t row0 = commonParam->GetRow0(plane,ch,0);
3081 Int_t nPads = commonParam->GetRowMax(plane,ch,0);
3082 zmaxsensitive[ch] = Float_t(nPads) * pad / 2.0;
3083 zc[ch] = -(pad * nPads) / 2.0 + row0;
3086 dx = AliTRDcalibDB::Instance()->GetVdrift(0,0,0)
3087 / commonParam->GetSamplingFrequency();
3088 rho = 0.00295 * 0.85; //????
3091 Double_t x0 = (Double_t) AliTRDgeometry::GetTime0(plane);
3092 //Double_t xbottom = x0 - dxDrift;
3093 //Double_t xtop = x0 + dxAmp;
3095 Int_t nTimeBins = AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
3096 for (Int_t iTime = 0; iTime < nTimeBins; iTime++) {
3098 Double_t xlayer = iTime * dx - dxAmp;
3099 //if (xlayer<0) xlayer = dxAmp / 2.0;
3102 tbIndex = CookTimeBinIndex(plane,iTime);
3103 ppl = new AliTRDpropagationLayerHLT(x,dx,rho,radLength,tbIndex,plane);
3104 ppl->SetYmax(ymax,ymaxsensitive);
3105 ppl->SetZ(zc,zmax,zmaxsensitive);
3106 ppl->SetHoles(holes);
3117 delete [] zmaxsensitive;
3121 //_____________________________________________________________________________
3122 AliTRDtrackingSectorHLT
3123 ::AliTRDtrackingSectorHLT(const AliTRDtrackingSectorHLT &/*t*/)
3134 //_____________________________________________________________________________
3135 Int_t AliTRDtrackingSectorHLT
3136 ::CookTimeBinIndex(Int_t plane, Int_t localTB) const
3139 // depending on the digitization parameters calculates "global"
3140 // time bin index for timebin <localTB> in plane <plane>
3144 Int_t tbPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
3145 Int_t gtb = (plane+1) * tbPerPlane - localTB - 1;
3157 //_____________________________________________________________________________
3158 void AliTRDtrackingSectorHLT
3159 ::MapTimeBinLayers()
3162 // For all sensitive time bins sets corresponding layer index
3163 // in the array fTimeBins
3168 for (Int_t i = 0; i < fN; i++) {
3170 index = fLayers[i]->GetTimeBinIndex();
3175 if (index >= (Int_t) AliTRDtrackingHLT::kMaxTimeBinIndex) {
3176 //AliWarning(Form("Index %d exceeds allowed maximum of %d!\n"
3177 // ,index,AliTRDtrackingHLT::kMaxTimeBinIndex-1));
3181 fTimeBinIndex[index] = i;
3187 //_____________________________________________________________________________
3188 Int_t AliTRDtrackingSectorHLT
3189 ::GetLayerNumber(Double_t x) const
3192 // Returns the number of time bin which in radial position is closest to <x>
3195 if (x >= fLayers[fN-1]->GetX()) {
3198 if (x <= fLayers[ 0]->GetX()) {
3204 Int_t m = (b + e) / 2;
3206 for ( ; b < e; m = (b + e) / 2) {
3207 if (x > fLayers[m]->GetX()) {
3215 if (TMath::Abs(x - fLayers[m]->GetX()) > TMath::Abs(x - fLayers[m+1]->GetX())) {
3224 //_____________________________________________________________________________
3225 Int_t AliTRDtrackingSectorHLT
3226 ::GetInnerTimeBin() const
3229 // Returns number of the innermost SENSITIVE propagation layer
3232 return GetLayerNumber(0);
3236 //_____________________________________________________________________________
3237 Int_t AliTRDtrackingSectorHLT
3238 ::GetOuterTimeBin() const
3241 // Returns number of the outermost SENSITIVE time bin
3244 return GetLayerNumber(GetNumberOfTimeBins() - 1);
3248 //_____________________________________________________________________________
3249 Int_t AliTRDtrackingSectorHLT
3250 ::GetNumberOfTimeBins() const
3253 // Returns number of SENSITIVE time bins
3259 for (tb = AliTRDtrackingHLT::kMaxTimeBinIndex - 1; tb >= 0; tb--) {
3260 layer = GetLayerNumber(tb);
3270 //_____________________________________________________________________________
3271 void AliTRDtrackingSectorHLT
3272 ::InsertLayer(AliTRDpropagationLayerHLT *pl)
3275 // Insert layer <pl> in fLayers array.
3276 // Layers are sorted according to X coordinate.
3279 if (fN == ((Int_t) AliTRDtrackingHLT::kMaxLayersPerSector)) {
3280 //AliWarning("Too many layers !\n");
3289 Int_t i = Find(pl->GetX());
3291 memmove(fLayers+i+1,fLayers+i,(fN-i)*sizeof(AliTRDpropagationLayerHLT*));
3298 //_____________________________________________________________________________
3299 Int_t AliTRDtrackingSectorHLT
3300 ::Find(Double_t x) const
3303 // Returns index of the propagation layer nearest to X
3306 if (x <= fLayers[0]->GetX()) {
3310 if (x > fLayers[fN-1]->GetX()) {
3316 Int_t m = (b + e) / 2;
3318 for (; b < e; m = (b + e) / 2) {
3319 if (x > fLayers[m]->GetX()) {
3331 //_____________________________________________________________________________
3332 void AliTRDpropagationLayerHLT
3333 ::SetZ(Double_t *center, Double_t *w, Double_t *wsensitive )
3336 // set centers and the width of sectors
3339 for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) {
3340 fZc[icham] = center[icham];
3341 fZmax[icham] = w[icham];
3342 fZmaxSensitive[icham] = wsensitive[icham];
3347 //_____________________________________________________________________________
3348 void AliTRDpropagationLayerHLT::SetHoles(Bool_t *holes)
3351 // set centers and the width of sectors
3356 for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) {
3357 fIsHole[icham] = holes[icham];
3365 //_____________________________________________________________________________
3366 void AliTRDpropagationLayerHLT
3367 ::InsertCluster(AliTRDcluster *c, UInt_t index)
3370 // Insert cluster in cluster array.
3371 // Clusters are sorted according to Y coordinate.
3374 if (fTimeBinIndex < 0) {
3375 //AliWarning("Attempt to insert cluster into non-sensitive time bin!\n");
3379 if (fN == (Int_t) AliTRDtrackingHLT::kMaxClusterPerTimeBin) {
3380 //AliWarning("Too many clusters !\n");
3386 fClusters[fN++] = c;
3390 Int_t i = Find(c->GetY());
3391 memmove(fClusters+i+1,fClusters+i,(fN-i)*sizeof(AliTRDcluster*));
3392 memmove(fIndex +i+1,fIndex +i,(fN-i)*sizeof(UInt_t));
3399 //_____________________________________________________________________________
3400 Int_t AliTRDpropagationLayerHLT::Find(Float_t y) const
3403 // Returns index of the cluster nearest in Y
3409 if (y <= fClusters[0]->GetY()) {
3412 if (y > fClusters[fN-1]->GetY()) {
3418 Int_t m = (b + e) / 2;
3420 for ( ; b < e; m = (b + e) / 2) {
3421 if (y > fClusters[m]->GetY()) {
3433 //_____________________________________________________________________________
3434 Int_t AliTRDpropagationLayerHLT
3435 ::FindNearestCluster(Float_t y, Float_t z, Float_t maxroad
3436 , Float_t maxroadz) const
3439 // Returns index of the cluster nearest to the given y,z
3444 Float_t mindist = maxroad;
3446 for (Int_t i = Find(y-maxroad); i < maxn; i++) {
3447 AliTRDcluster *c = (AliTRDcluster *) (fClusters[i]);
3448 Float_t ycl = c->GetY();
3449 if (ycl > (y + maxroad)) {
3452 if (TMath::Abs(c->GetZ() - z) > maxroadz) {
3455 if (TMath::Abs(ycl - y) < mindist) {
3456 mindist = TMath::Abs(ycl - y);
3465 //_____________________________________________________________________________
3466 Double_t AliTRDtrackerHLT::GetTiltFactor(const AliTRDcluster *c)
3469 // Returns correction factor for tilted pads geometry
3472 Int_t det = c->GetDetector();
3473 Int_t plane = fGeom->GetPlane(det);
3474 AliTRDpadPlane *padPlane = AliTRDCommonParam::Instance()->GetPadPlane(plane,0);
3475 Double_t h01 = TMath::Tan(-TMath::Pi() / 180.0 * padPlane->GetTiltingAngle());
3485 //_____________________________________________________________________________
3486 void AliTRDtrackerHLT::CookdEdxTimBin(AliTRDtrack &TRDtrack)
3489 // This is setting fdEdxPlane and fTimBinPlane
3490 // Sums up the charge in each plane for track TRDtrack and also get the
3491 // Time bin for Max. Cluster
3492 // Prashant Shukla (shukla@physi.uni-heidelberg.de)
3495 Double_t clscharge[AliESDtrack::kNPlane][AliESDtrack::kNSlice];
3496 Double_t maxclscharge[AliESDtrack::kNPlane];
3497 Int_t nCluster[AliESDtrack::kNPlane][AliESDtrack::kNSlice];
3498 Int_t timebin[AliESDtrack::kNPlane];
3500 // Initialization of cluster charge per plane.
3501 for (Int_t iPlane = 0; iPlane < AliESDtrack::kNPlane; iPlane++) {
3502 for (Int_t iSlice = 0; iSlice < AliESDtrack::kNSlice; iSlice++) {
3503 clscharge[iPlane][iSlice] = 0.0;
3504 nCluster[iPlane][iSlice] = 0;
3508 // Initialization of cluster charge per plane.
3509 for (Int_t iPlane = 0; iPlane < AliESDtrack::kNPlane; iPlane++) {
3510 timebin[iPlane] = -1;
3511 maxclscharge[iPlane] = 0.0;
3514 // Loop through all clusters associated to track TRDtrack
3515 Int_t nClus = TRDtrack.GetNumberOfClusters(); // from Kalmantrack
3516 for (Int_t iClus = 0; iClus < nClus; iClus++) {
3517 Double_t charge = TRDtrack.GetClusterdQdl(iClus);
3518 Int_t index = TRDtrack.GetClusterIndex(iClus);
3519 AliTRDcluster *pTRDcluster = (AliTRDcluster *) GetCluster(index);
3523 Int_t tb = pTRDcluster->GetLocalTimeBin();
3527 Int_t detector = pTRDcluster->GetDetector();
3528 Int_t iPlane = fGeom->GetPlane(detector);
3529 if (iPlane >= AliESDtrack::kNPlane) {
3530 AliError(Form("Wrong plane %d",iPlane));
3533 Int_t iSlice = tb * AliESDtrack::kNSlice
3534 / AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
3535 if (iSlice >= AliESDtrack::kNSlice) {
3536 AliError(Form("Wrong slice %d",iSlice));
3539 clscharge[iPlane][iSlice] = clscharge[iPlane][iSlice] + charge;
3540 if (charge > maxclscharge[iPlane]) {
3541 maxclscharge[iPlane] = charge;
3542 timebin[iPlane] = tb;
3544 nCluster[iPlane][iSlice]++;
3545 } // End of loop over cluster
3547 // Setting the fdEdxPlane and fTimBinPlane variabales
3548 Double_t totalCharge = 0.0;
3550 for (Int_t iPlane = 0; iPlane < AliESDtrack::kNPlane; iPlane++) {
3551 for (Int_t iSlice = 0; iSlice < AliESDtrack::kNSlice; iSlice++) {
3552 if (nCluster[iPlane][iSlice]) {
3553 clscharge[iPlane][iSlice] /= nCluster[iPlane][iSlice];
3555 TRDtrack.SetPIDsignals(clscharge[iPlane][iSlice],iPlane,iSlice);
3556 totalCharge = totalCharge+clscharge[iPlane][iSlice];
3558 TRDtrack.SetPIDTimBin(timebin[iPlane],iPlane);
3561 // Still needed ????
3563 // Int_t nc=TRDtrack.GetNumberOfClusters();
3565 // for (i=0; i<nc; i++) dedx += TRDtrack.GetClusterdQdl(i);
3567 // for (Int_t iPlane = 0; iPlane < kNPlane; iPlane++) {
3568 // TRDtrack.SetPIDsignals(dedx, iPlane);
3569 // TRDtrack.SetPIDTimBin(timbin[iPlane], iPlane);
3574 //_____________________________________________________________________________
3575 Int_t AliTRDtrackerHLT::FindClusters(Int_t sector, Int_t t0, Int_t t1
3576 , AliTRDtrack *track
3577 , Int_t *clusters, AliTRDtracklet &tracklet)
3581 // Try to find nearest clusters to the track in timebins from t0 to t1
3583 // Correction coeficients - depend on TRD parameters - to be changed accordingly
3589 Double_t xmean = 0.0; // Reference x
3590 Double_t dz[10][100];
3591 Double_t dy[10][100];
3595 Int_t indexes[10][100]; // Indexes of the clusters in the road
3596 Int_t best[10][100]; // Index of best matching cluster
3597 AliTRDcluster *cl[10][100]; // Pointers to the clusters in the road
3599 for (Int_t it = 0; it < 100; it++) {
3606 for (Int_t ih = 0; ih < 10;ih++) {
3607 indexes[ih][it] = -2; // Reset indexes1
3609 dz[ih][it] = -100.0;
3610 dy[ih][it] = -100.0;
3615 Double_t x0 = track->GetX();
3616 Double_t sigmaz = TMath::Sqrt(TMath::Abs(track->GetSigmaZ2()));
3621 Int_t detector = -1;
3622 Float_t padlength = 0.0;
3623 AliTRDtrack track2(* track);
3624 Float_t snpy = track->GetSnp();
3625 Float_t tany = TMath::Sqrt(snpy*snpy / (1.0 - snpy*snpy));
3630 Double_t sy2 = ExpectedSigmaY2(x0,track->GetTgl(),track->GetPt());
3631 Double_t sz2 = ExpectedSigmaZ2(x0,track->GetTgl());
3632 Double_t road = 15.0 * TMath::Sqrt(track->GetSigmaY2() + sy2);
3638 for (Int_t it = 0; it < t1-t0; it++) {
3640 Double_t maxChi2[2] = { fgkMaxChi2, fgkMaxChi2 };
3641 AliTRDpropagationLayerHLT &timeBin = *(fTrSec[sector]->GetLayer(it+t0));
3643 continue; // No indexes1
3646 Int_t maxn = timeBin;
3647 x[it] = timeBin.GetX();
3648 track2.PropagateTo(x[it]);
3649 yt[it] = track2.GetY();
3650 zt[it] = track2.GetZ();
3652 Double_t y = yt[it];
3653 Double_t z = zt[it];
3654 Double_t chi2 = 1000000.0;
3658 // Find 2 nearest cluster at given time bin
3660 int checkPoint[4] = {0,0,0,0};
3661 double minY = 123456789;
3662 double minD[2] = {1,1};
3664 for (Int_t i = timeBin.Find(y - road); i < maxn; i++) {
3665 //for (Int_t i = 0; i < maxn; i++) {
3667 AliTRDcluster *c = (AliTRDcluster *) (timeBin[i]);
3668 h01 = GetTiltFactor(c);
3670 Int_t det = c->GetDetector();
3671 plane = fGeom->GetPlane(det);
3672 padlength = TMath::Sqrt(c->GetSigmaZ2() * 12.0);
3675 //if (c->GetLocalTimeBin()==0) continue;
3676 if (c->GetY() > (y + road)) {
3680 fHDeltaX->Fill(c->GetX() - x[it]);
3681 //printf("%f\t%f\t%f \n", c->GetX(), x[it], c->GetX()-x[it]);
3683 if (TMath::Abs(c->GetY()-y) < TMath::Abs(minY)) {
3685 minD[0] = c->GetY()-y;
3686 minD[1] = c->GetZ()-z;
3691 fHMinZ->Fill(c->GetZ() - z);
3692 if ((c->GetZ() - z) * (c->GetZ() - z) > 2 * (12.0 * sz2)) {
3697 Double_t dist = TMath::Abs(c->GetZ() - z);
3698 if (dist > (0.5 * padlength + 6.0 * sigmaz)) { // 0.5
3699 continue; // 6 sigma boundary cut
3703 Double_t cost = 0.0;
3704 // Sigma boundary cost function
3705 if (dist> (0.5 * padlength - sigmaz)){
3706 cost = (dist - 0.5*padlength) / (2.0 * sigmaz);
3708 cost = (cost + 1.0) * (cost + 1.0);
3714 //Int_t label = TMath::Abs(track->GetLabel());
3715 //if (c->GetLabel(0)!=label && c->GetLabel(1)!=label&&c->GetLabel(2)!=label) continue;
3716 chi2 = track2.GetPredictedChi2(c,h01) + cost;
3719 if (chi2 > maxChi2[1]) {
3724 detector = c->GetDetector();
3725 // Store the clusters in the road
3726 for (Int_t ih = 2; ih < 9; ih++) {
3727 if (cl[ih][it] == 0) {
3729 indexes[ih][it] = timeBin.GetIndex(i); // Index - 9 - reserved for outliers
3734 if (chi2 < maxChi2[0]) {
3735 maxChi2[1] = maxChi2[0];
3737 indexes[1][it] = indexes[0][it];
3738 cl[1][it] = cl[0][it];
3739 indexes[0][it] = timeBin.GetIndex(i);
3745 indexes[1][it] = timeBin.GetIndex(i);
3749 for(int iCheckPoint = 0; iCheckPoint<4; iCheckPoint++)
3750 fHFindCl[iCheckPoint]->Fill(checkPoint[iCheckPoint]);
3752 if (checkPoint[3]) {
3753 if (track->GetPt() > 0) fHMinYPos->Fill(minY);
3754 else fHMinYNeg->Fill(minY);
3756 fHMinD->Fill(minD[0], minD[1]);
3769 xmean /= Float_t(nfound); // Middle x
3770 track2.PropagateTo(xmean); // Propagate track to the center
3773 // Choose one of the variants
3778 Double_t sumdy = 0.0;
3779 Double_t sumdy2 = 0.0;
3780 Double_t sumx = 0.0;
3781 Double_t sumxy = 0.0;
3782 Double_t sumx2 = 0.0;
3783 Double_t mpads = 0.0;
3789 Double_t moffset[10]; // Mean offset
3790 Double_t mean[10]; // Mean value
3791 Double_t angle[10]; // Angle
3793 Double_t smoffset[10]; // Sigma of mean offset
3794 Double_t smean[10]; // Sigma of mean value
3795 Double_t sangle[10]; // Sigma of angle
3796 Double_t smeanangle[10]; // Correlation
3798 Double_t sigmas[10];
3799 Double_t tchi2s[10]; // Chi2s for tracklet
3801 for (Int_t it = 0; it < 10; it++) {
3807 moffset[it] = 0.0; // Mean offset
3808 mean[it] = 0.0; // Mean value
3809 angle[it] = 0.0; // Angle
3811 smoffset[it] = 1.0e5; // Sigma of mean offset
3812 smean[it] = 1.0e5; // Sigma of mean value
3813 sangle[it] = 1.0e5; // Sigma of angle
3814 smeanangle[it] = 0.0; // Correlation
3817 tchi2s[it] = 1.0e5; // Chi2s for tracklet
3824 for (Int_t it = 0; it < t1 - t0; it++) {
3828 for (Int_t dt = -3; dt <= 3; dt++) {
3832 if (it+dt > t1-t0) {
3835 if (!cl[0][it+dt]) {
3838 zmean[it] += cl[0][it+dt]->GetZ();
3841 zmean[it] /= nmean[it];
3844 for (Int_t it = 0; it < t1 - t0; it++) {
3848 for (Int_t ih = 0; ih < 10; ih++) {
3849 dz[ih][it] = -100.0;
3850 dy[ih][it] = -100.0;
3854 Double_t xcluster = cl[ih][it]->GetX();
3857 track2.GetProlongation(xcluster,ytrack,ztrack );
3858 dz[ih][it] = cl[ih][it]->GetZ()- ztrack; // Calculate distance from track in z
3859 dy[ih][it] = cl[ih][it]->GetY() + dz[ih][it]*h01 - ytrack; // and in y
3866 if ((TMath::Abs(cl[0][it]->GetZ()-zmean[it]) > padlength * 0.8) &&
3868 if (TMath::Abs(cl[1][it]->GetZ()-zmean[it]) < padlength * 0.5) {
3876 // Iterative choice of "best path"
3878 Int_t label = TMath::Abs(track->GetLabel());
3881 for (Int_t iter = 0; iter < 9; iter++) {
3896 for (Int_t it = 0; it < t1 - t0; it++) {
3898 if (!cl[best[iter][it]][it]) {
3902 // Calculates pad-row changes
3903 Double_t zbefore = cl[best[iter][it]][it]->GetZ();
3904 Double_t zafter = cl[best[iter][it]][it]->GetZ();
3905 for (Int_t itd = it - 1; itd >= 0; itd--) {
3906 if (cl[best[iter][itd]][itd]) {
3907 zbefore = cl[best[iter][itd]][itd]->GetZ();
3911 for (Int_t itd = it + 1; itd < t1 - t0; itd++) {
3912 if (cl[best[iter][itd]][itd]) {
3913 zafter = cl[best[iter][itd]][itd]->GetZ();
3917 if ((TMath::Abs(cl[best[iter][it]][it]->GetZ()-zbefore) > 0.1) &&
3918 (TMath::Abs(cl[best[iter][it]][it]->GetZ()- zafter) > 0.1)) {
3922 Double_t dx = x[it]-xmean; // Distance to reference x
3923 sumz += cl[best[iter][it]][it]->GetZ();
3925 sumdy += dy[best[iter][it]][it];
3926 sumdy2 += dy[best[iter][it]][it]*dy[best[iter][it]][it];
3929 sumxy += dx*dy[best[iter][it]][it];
3930 mpads += cl[best[iter][it]][it]->GetNPads();
3931 if ((cl[best[iter][it]][it]->GetLabel(0) == label) ||
3932 (cl[best[iter][it]][it]->GetLabel(1) == label) ||
3933 (cl[best[iter][it]][it]->GetLabel(2) == label)) {
3943 // calculates line parameters
3945 Double_t det = sum*sumx2 - sumx*sumx;
3946 angle[iter] = (sum*sumxy - sumx*sumdy) / det;
3947 mean[iter] = (sumx2*sumdy - sumx*sumxy) / det;
3948 meanz[iter] = sumz / sum;
3949 moffset[iter] = sumdy / sum;
3950 mpads /= sum; // Mean number of pads
3952 Double_t sigma2 = 0.0; // Normalized residuals - for line fit
3953 Double_t sigma1 = 0.0; // Normalized residuals - constant fit
3955 for (Int_t it = 0; it < t1 - t0; it++) {
3956 if (!cl[best[iter][it]][it]) {
3959 Double_t dx = x[it] - xmean;
3960 Double_t ytr = mean[iter] + angle[iter] * dx;
3961 sigma2 += (dy[best[iter][it]][it] - ytr)
3962 * (dy[best[iter][it]][it] - ytr);
3963 sigma1 += (dy[best[iter][it]][it] - moffset[iter])
3964 * (dy[best[iter][it]][it] - moffset[iter]);
3967 sigma2 /= (sum - 2); // Normalized residuals
3968 sigma1 /= (sum - 1); // Normalized residuals
3969 smean[iter] = sigma2 * (sumx2 / det); // Estimated error2 of mean
3970 sangle[iter] = sigma2 * ( sum / det); // Estimated error2 of angle
3971 smeanangle[iter] = sigma2 * (-sumx / det); // Correlation
3972 sigmas[iter] = TMath::Sqrt(sigma1);
3973 smoffset[iter] = (sigma1 / sum) + 0.01*0.01; // Sigma of mean offset + unisochronity sigma
3976 // Iterative choice of "better path"
3978 for (Int_t it = 0; it < t1 - t0; it++) {
3980 if (!cl[best[iter][it]][it]) {
3984 // Add unisochronity + angular effect contribution
3985 Double_t sigmatr2 = smoffset[iter] + 0.5*tany*tany;
3986 Double_t sweight = 1.0/sigmatr2 + 1.0/track->GetSigmaY2();
3987 Double_t weighty = (moffset[iter] / sigmatr2) / sweight; // Weighted mean
3988 Double_t sigmacl = TMath::Sqrt(sigma1*sigma1 + track->GetSigmaY2());
3989 Double_t mindist = 100000.0;
3992 for (Int_t ih = 0; ih < 10; ih++) {
3996 Double_t dist2 = (dy[ih][it] - weighty) / sigmacl;
3997 dist2 *= dist2; // Chi2 distance
3998 if (dist2 < mindist) {
4003 best[iter+1][it] = ihbest;
4007 // Update best hypothesy if better chi2 according tracklet position and angle
4009 Double_t sy2 = smean[iter] + track->GetSigmaY2();
4010 Double_t sa2 = sangle[iter] + track->GetSigmaSnp2(); // track->fCee;
4011 Double_t say = track->GetSigmaSnpY(); // track->fCey;
4012 //Double_t chi20 = mean[bestiter]*mean[bestiter ] / sy2+angle[bestiter]*angle[bestiter]/sa2;
4013 //Double_t chi21 = mean[iter]*mean[iter] / sy2+angle[iter]*angle[iter]/sa2;
4015 Double_t detchi = sy2*sa2 - say*say;
4016 Double_t invers[3] = {sa2/detchi,sy2/detchi,-say/detchi}; // Inverse value of covariance matrix
4018 Double_t chi20 = mean[bestiter] * mean[bestiter] * invers[0]
4019 + angle[bestiter] * angle[bestiter] * invers[1]
4020 + 2.0 * mean[bestiter] * angle[bestiter] * invers[2];
4021 Double_t chi21 = mean[iter] * mean[iter] * invers[0]
4022 + angle[iter] * angle[iter] * invers[1]
4023 + 2.0 * mean[iter] * angle[iter] * invers[2];
4024 tchi2s[iter] = chi21;
4026 if ((changes[iter] <= changes[bestiter]) &&
4036 Double_t sigma2 = sigmas[0]; // Choose as sigma from 0 iteration
4037 Short_t maxpos = -1;
4038 Float_t maxcharge = 0.0;
4039 Short_t maxpos4 = -1;
4040 Float_t maxcharge4 = 0.0;
4041 Short_t maxpos5 = -1;
4042 Float_t maxcharge5 = 0.0;
4044 //if (tchi2s[bestiter]>25.) sigma2*=tchi2s[bestiter]/25.;
4045 //if (tchi2s[bestiter]>25.) sigma2=1000.; // dont'accept
4047 Double_t exB = AliTRDcalibDB::Instance()->GetOmegaTau(AliTRDcalibDB::Instance()->GetVdrift(0,0,0)
4048 ,-AliTracker::GetBz()*0.1);
4049 Double_t expectederr = sigma2*sigma2 + 0.01*0.01;
4051 expectederr += (mpads - 3.5) * 0.04;
4053 if (changes[bestiter] > 1) {
4054 expectederr += changes[bestiter] * 0.01;
4056 expectederr += (0.03 * (tany-exB)*(tany-exB)) * 15.0;
4057 //if (tchi2s[bestiter]>18.) expectederr*= tchi2s[bestiter]/18.;
4058 //expectederr+=10000;
4060 for (Int_t it = 0; it < t1 - t0; it++) {
4062 if (!cl[best[bestiter][it]][it]) {
4066 cl[best[bestiter][it]][it]->SetSigmaY2(expectederr); // Set cluster error
4067 if (!cl[best[bestiter][it]][it]->IsUsed()) {
4068 cl[best[bestiter][it]][it]->SetY(cl[best[bestiter][it]][it]->GetY());
4069 //cl[best[bestiter][it]][it]->Use();
4072 // Time bins with maximal charge
4073 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge) {
4074 maxcharge = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
4075 maxpos = cl[best[bestiter][it]][it]->GetLocalTimeBin();
4078 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge4) {
4079 if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 4) {
4080 maxcharge4 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
4081 maxpos4 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
4085 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge5) {
4086 if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 5) {
4087 maxcharge5 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
4088 maxpos5 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
4092 // Time bins with maximal charge
4093 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge) {
4094 maxcharge = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
4095 maxpos = cl[best[bestiter][it]][it]->GetLocalTimeBin();
4098 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge4) {
4099 if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 4) {
4100 maxcharge4 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
4101 maxpos4 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
4105 if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge5) {
4106 if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 5) {
4107 maxcharge5 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
4108 maxpos5 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
4112 clusters[it+t0] = indexes[best[bestiter][it]][it];
4114 // Still needed ????
4115 //if (cl[best[bestiter][it]][it]->GetLocalTimeBin()>4 &&
4116 //cl[best[bestiter][it]][it]->GetLocalTimeBin()<18) clusters[it+t0]
4117 // = indexes[best[bestiter][it]][it]; //Test
4122 // Set tracklet parameters
4124 Double_t trackleterr2 = smoffset[bestiter] + 0.01*0.01;
4126 trackleterr2 += (mpads - 3.5) * 0.04;
4128 trackleterr2 += changes[bestiter] * 0.01;
4129 trackleterr2 *= TMath::Max(14.0 - nfound,1.0);
4130 trackleterr2 += 0.2 * (tany-exB)*(tany-exB);
4132 // Set tracklet parameters
4134 ,track2.GetY() + moffset[bestiter]
4138 tracklet.SetTilt(h01);
4139 tracklet.SetP0(mean[bestiter]);
4140 tracklet.SetP1(angle[bestiter]);
4141 tracklet.SetN(nfound);
4142 tracklet.SetNCross(changes[bestiter]);
4143 tracklet.SetPlane(plane);
4144 tracklet.SetSigma2(expectederr);
4145 tracklet.SetChi2(tchi2s[bestiter]);
4146 tracklet.SetMaxPos(maxpos,maxpos4,maxpos5);
4147 track->SetTracklets(plane,tracklet);
4148 track->SetNWrong(track->GetNWrong() + nbad[0]);
4153 TClonesArray array0("AliTRDcluster");
4154 TClonesArray array1("AliTRDcluster");
4155 array0.ExpandCreateFast(t1 - t0 + 1);
4156 array1.ExpandCreateFast(t1 - t0 + 1);
4157 TTreeSRedirector &cstream = *fDebugStreamer;
4158 AliTRDcluster dummy;
4162 for (Int_t it = 0; it < t1 - t0; it++) {
4163 dy0[it] = dy[0][it];
4164 dyb[it] = dy[best[bestiter][it]][it];
4166 new(array0[it]) AliTRDcluster(*cl[0][it]);
4169 new(array0[it]) AliTRDcluster(dummy);
4171 if(cl[best[bestiter][it]][it]) {
4172 new(array1[it]) AliTRDcluster(*cl[best[bestiter][it]][it]);
4175 new(array1[it]) AliTRDcluster(dummy);
4178 TGraph graph0(t1-t0,x,dy0);
4179 TGraph graph1(t1-t0,x,dyb);
4180 TGraph graphy(t1-t0,x,yt);
4181 TGraph graphz(t1-t0,x,zt);
4183 if (AliTRDReconstructor::StreamLevel() > 0) {
4184 cstream << "tracklet"
4185 << "track.=" << track // Track parameters
4186 << "tany=" << tany // Tangent of the local track angle
4187 << "xmean=" << xmean // Xmean - reference x of tracklet
4188 << "tilt=" << h01 // Tilt angle
4189 << "nall=" << nall // Number of foundable clusters
4190 << "nfound=" << nfound // Number of found clusters
4191 << "clfound=" << clfound // Total number of found clusters in road
4192 << "mpads=" << mpads // Mean number of pads per cluster
4193 << "plane=" << plane // Plane number
4194 << "detector=" << detector // Detector number
4195 << "road=" << road // The width of the used road
4196 << "graph0.=" << &graph0 // x - y = dy for closest cluster
4197 << "graph1.=" << &graph1 // x - y = dy for second closest cluster
4198 << "graphy.=" << &graphy // y position of the track
4199 << "graphz.=" << &graphz // z position of the track
4200 //<< "fCl.=" << &array0 // closest cluster
4201 //<< "fCl2.=" << &array1 // second closest cluster
4202 << "maxpos=" << maxpos // Maximal charge postion
4203 << "maxcharge=" << maxcharge // Maximal charge
4204 << "maxpos4=" << maxpos4 // Maximal charge postion - after bin 4
4205 << "maxcharge4=" << maxcharge4 // Maximal charge - after bin 4
4206 << "maxpos5=" << maxpos5 // Maximal charge postion - after bin 5
4207 << "maxcharge5=" << maxcharge5 // Maximal charge - after bin 5
4208 << "bestiter=" << bestiter // Best iteration number
4209 << "tracklet.=" << &tracklet // Corrspond to the best iteration
4210 << "tchi20=" << tchi2s[0] // Chi2 of cluster in the 0 iteration
4211 << "tchi2b=" << tchi2s[bestiter] // Chi2 of cluster in the best iteration
4212 << "sigmas0=" << sigmas[0] // Residuals sigma
4213 << "sigmasb=" << sigmas[bestiter] // Residulas sigma
4214 << "ngood0=" << ngood[0] // Number of good clusters in 0 iteration
4215 << "nbad0=" << nbad[0] // Number of bad clusters in 0 iteration
4216 << "ngoodb=" << ngood[bestiter] // in best iteration
4217 << "nbadb=" << nbad[bestiter] // in best iteration
4218 << "changes0=" << changes[0] // Changes of pardrows in iteration number 0
4219 << "changesb=" << changes[bestiter] // Changes of pardrows in best iteration
4220 << "moffset0=" << moffset[0] // Offset fixing angle in iter=0
4221 << "smoffset0=" << smoffset[0] // Sigma of offset fixing angle in iter=0
4222 << "moffsetb=" << moffset[bestiter] // Offset fixing angle in iter=best
4223 << "smoffsetb=" << smoffset[bestiter] // Sigma of offset fixing angle in iter=best
4224 << "mean0=" << mean[0] // Mean dy in iter=0;
4225 << "smean0=" << smean[0] // Sigma of mean dy in iter=0
4226 << "meanb=" << mean[bestiter] // Mean dy in iter=best
4227 << "smeanb=" << smean[bestiter] // Sigma of mean dy in iter=best
4228 << "angle0=" << angle[0] // Angle deviation in the iteration number 0
4229 << "sangle0=" << sangle[0] // Sigma of angular deviation in iteration number 0
4230 << "angleb=" << angle[bestiter] // Angle deviation in the best iteration
4231 << "sangleb=" << sangle[bestiter] // Sigma of angle deviation in the best iteration
4232 << "expectederr=" << expectederr // Expected error of cluster position
4240 //_____________________________________________________________________________
4241 Int_t AliTRDtrackerHLT::Freq(Int_t n, const Int_t *inlist
4242 , Int_t *outlist, Bool_t down)
4245 // Sort eleements according occurancy
4246 // The size of output array has is 2*n
4249 Int_t *sindexS = new Int_t[n]; // Temporary array for sorting
4250 Int_t *sindexF = new Int_t[2*n];
4251 for (Int_t i = 0; i < n; i++) {
4255 TMath::Sort(n,inlist,sindexS,down);
4257 Int_t last = inlist[sindexS[0]];
4260 sindexF[0+n] = last;
4264 for (Int_t i = 1; i < n; i++) {
4265 val = inlist[sindexS[i]];
4267 sindexF[countPos]++;
4271 sindexF[countPos+n] = val;
4272 sindexF[countPos]++;
4280 // Sort according frequency
4281 TMath::Sort(countPos,sindexF,sindexS,kTRUE);
4283 for (Int_t i = 0; i < countPos; i++) {
4284 outlist[2*i ] = sindexF[sindexS[i]+n];
4285 outlist[2*i+1] = sindexF[sindexS[i]];
4295 //_____________________________________________________________________________
4296 AliTRDtrack *AliTRDtrackerHLT::RegisterSeed(AliTRDseed *seeds, Double_t *params)
4302 Double_t alpha = AliTRDgeometry::GetAlpha();
4303 Double_t shift = AliTRDgeometry::GetAlpha()/2.0;
4307 c[ 1] = 0.0; c[ 2] = 2.0;
4308 c[ 3] = 0.0; c[ 4] = 0.0; c[ 5] = 0.02;
4309 c[ 6] = 0.0; c[ 7] = 0.0; c[ 8] = 0.0; c[ 9] = 0.1;
4310 c[10] = 0.0; c[11] = 0.0; c[12] = 0.0; c[13] = 0.0; c[14] = params[5]*params[5]*0.01;
4313 AliTRDcluster *cl = 0;
4315 for (Int_t ilayer = 0; ilayer < 6; ilayer++) {
4316 if (seeds[ilayer].IsOK()) {
4317 for (Int_t itime = 22; itime > 0; itime--) {
4318 if (seeds[ilayer].GetIndexes(itime) > 0) {
4319 index = seeds[ilayer].GetIndexes(itime);
4320 cl = seeds[ilayer].GetClusters(itime);
4333 AliTRDtrack *track = new AliTRDtrack(cl
4338 ,params[6]*alpha+shift);
4339 track->PropagateTo(params[0]-5.0);
4340 track->ResetCovariance(1);
4342 AliDebug(2, Form("FollowBackProlongation"));
4344 Int_t rc = FollowBackProlongation(*track);
4346 AliWarning("rc < 30 deleting the track");
4352 CookdEdxTimBin(*track);
4353 CookLabel(track,0.9);
4359 //////////////////////////////////////////////////////////////////////////////////////////
4361 void AliTRDtrackerHLT::InitLogHists() {
4363 fHBackfit = new TH1D("logTRD_backfit", "", 40, -0.5, 39.5);
4364 fHRefit = new TH1D("logTRD_refit", "", 40, -0.5, 39.5);
4365 fHClSearch = new TH1D("logTRD_clSearch", "", 60, -0.5, 59.5);
4367 fHX = new TH1D("logTRD_X", ";x (cm)", 200, 50, 400);
4368 fHNCl = new TH1D("logTRD_ncl", "", 40, -0.5, 39.5);
4369 fHNClTrack = new TH1D("logTRD_nclTrack", "", 180, -0.5, 179.5);
4371 fHMinYPos = new TH1D("logTRD_minYPos", ";#delta Y (cm)", 400, -6, 6);
4372 fHMinYNeg = new TH1D("logTRD_minYNeg", ";#delta Y (cm)", 400, -6, 6);
4373 fHMinZ = new TH1D("logTRD_minZ", ";#delta Z (cm)", 400, -20, 20);
4374 fHMinD = new TH2D("logTRD_minD", ";#delta Y (cm);#delta Z (cm)", 100, -6, 6, 100, -50, 50);
4376 fHDeltaX = new TH1D("logTRD_deltaX", ";#delta X (cm)", 100, -5, 5);
4377 fHXCl = new TH1D("logTRD_xCl", ";cluster x position (cm)", 1000, 280, 380);
4379 const char *nameFindCl[4] = {"logTRD_clY", "logTRD_clZ", "logTRD_clB", "logTRD_clG"};
4381 for(int i=0; i<4; i++) {
4382 fHFindCl[i] = new TH1D(nameFindCl[i], "", 30, -0.5, 29.5);
4386 //////////////////////////////////////////////////////////////////////////////////////////
4388 void AliTRDtrackerHLT::SaveLogHists() {
4390 TDirectory *sav = gDirectory;
4393 TSeqCollection *col = gROOT->GetListOfFiles();
4394 int N = col->GetEntries();
4395 for(int i=0; i<N; i++) {
4396 logFile = (TFile*)col->At(i);
4397 if (strstr(logFile->GetName(), "AliESDs.root")) break;
4401 fHBackfit->Write(fHBackfit->GetName(), TObject::kOverwrite);
4402 fHRefit->Write(fHRefit->GetName(), TObject::kOverwrite);
4403 fHClSearch->Write(fHClSearch->GetName(), TObject::kOverwrite);
4404 fHX->Write(fHX->GetName(), TObject::kOverwrite);
4405 fHNCl->Write(fHNCl->GetName(), TObject::kOverwrite);
4406 fHNClTrack->Write(fHNClTrack->GetName(), TObject::kOverwrite);
4408 fHMinYPos->Write(fHMinYPos->GetName(), TObject::kOverwrite);
4409 fHMinYNeg->Write(fHMinYNeg->GetName(), TObject::kOverwrite);
4410 fHMinD->Write(fHMinD->GetName(), TObject::kOverwrite);
4411 fHMinZ->Write(fHMinZ->GetName(), TObject::kOverwrite);
4413 fHDeltaX->Write(fHDeltaX->GetName(), TObject::kOverwrite);
4414 fHXCl->Write(fHXCl->GetName(), TObject::kOverwrite);
4417 for(int i=0; i<4; i++)
4418 fHFindCl[i]->Write(fHFindCl[i]->GetName(), TObject::kOverwrite);
4425 //////////////////////////////////////////////////////////////////////////////////////////