/************************************************************************** * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * * * * Author: The ALICE Off-line Project. * * Contributors are mentioned in the code where appropriate. * * * * Permission to use, copy, modify and distribute this software and its * * documentation strictly for non-commercial purposes is hereby granted * * without fee, provided that the above copyright notice appears in all * * copies and that both the copyright notice and this permission notice * * appear in the supporting documentation. The authors make no claims * * about the suitability of this software for any purpose. It is * * provided "as is" without express or implied warranty. * **************************************************************************/ /* $Id$ */ /////////////////////////////////////////////////////////////////////////////// // // // The standard TRD tracker // // Based on Kalman filltering approach // // // // Authors: // // M. Ivanov (Marian.Ivanov@cern.ch) // // // /////////////////////////////////////////////////////////////////////////////// #include #include #include #include #include #include #include #include #include "AliESDEvent.h" #include "AliESDtrack.h" #include "AliAlignObj.h" #include "AliRieman.h" #include "AliTrackPointArray.h" #include "AliTRDgeometry.h" #include "AliTRDpadPlane.h" #include "AliTRDgeometry.h" #include "AliTRDcluster.h" #include "AliTRDtrack.h" #include "AliTRDseed.h" #include "AliTRDcalibDB.h" #include "AliTRDCommonParam.h" #include "AliTRDtracker.h" #include "AliTRDReconstructor.h" #include "AliTRDCalibraFillHisto.h" ClassImp(AliTRDtracker) const Float_t AliTRDtracker::fgkMinClustersInTrack = 0.5; // const Float_t AliTRDtracker::fgkLabelFraction = 0.8; // const Double_t AliTRDtracker::fgkMaxChi2 = 12.0; // const Double_t AliTRDtracker::fgkMaxSnp = 0.95; // Maximum local sine of the azimuthal angle const Double_t AliTRDtracker::fgkMaxStep = 2.0; // Maximal step size in propagation //_____________________________________________________________________________ AliTRDtracker::AliTRDtracker() :AliTracker() ,fGeom(0) ,fNclusters(0) ,fClusters(0) ,fNseeds(0) ,fSeeds(0) ,fNtracks(0) ,fTracks(0) ,fTimeBinsPerPlane(0) ,fAddTRDseeds(kFALSE) ,fNoTilt(kFALSE) ,fHBackfit(0x0) ,fHClSearch(0x0) ,fHRefit(0x0) ,fHX(0x0) ,fHNCl(0x0) ,fHNClTrack(0x0) ,fHMinYPos(0x0) ,fHMinYNeg(0x0) ,fHMinZ(0x0) ,fHMinD(0x0) ,fHDeltaX(0x0) ,fHXCl(0x0) ,fDebugStreamer(0) { // // Default constructor // for (Int_t i = 0; i < kTrackingSectors; i++) { fTrSec[i] = 0; } InitLogHists(); } //_____________________________________________________________________________ AliTRDtracker::AliTRDtracker(const AliTRDtracker &t) :AliTracker(t) ,fGeom(0) ,fNclusters(0) ,fClusters(0) ,fNseeds(0) ,fSeeds(0) ,fNtracks(0) ,fTracks(0) ,fTimeBinsPerPlane(0) ,fAddTRDseeds(kFALSE) ,fNoTilt(kFALSE) ,fHBackfit(0x0) ,fHClSearch(0x0) ,fHRefit(0x0) ,fHX(0x0) ,fHNCl(0x0) ,fHNClTrack(0x0) ,fHMinYPos(0x0) ,fHMinYNeg(0x0) ,fHMinZ(0x0) ,fHMinD(0x0) ,fHDeltaX(0x0) ,fHXCl(0x0) ,fDebugStreamer(0) { // // Copy constructor // } //_____________________________________________________________________________ AliTRDtracker::AliTRDtracker(const TFile */*geomfile*/) :AliTracker() ,fGeom(0) ,fNclusters(0) ,fClusters(new TObjArray(2000)) ,fNseeds(0) ,fSeeds(new TObjArray(2000)) ,fNtracks(0) ,fTracks(new TObjArray(1000)) ,fTimeBinsPerPlane(0) ,fAddTRDseeds(kFALSE) ,fNoTilt(kFALSE) ,fHBackfit(0x0) ,fHClSearch(0x0) ,fHRefit(0x0) ,fHX(0x0) ,fHNCl(0x0) ,fHNClTrack(0x0) ,fHMinYPos(0x0) ,fHMinYNeg(0x0) ,fHMinZ(0x0) ,fHMinD(0x0) ,fHDeltaX(0x0) ,fHXCl(0x0) ,fDebugStreamer(0) { // // Main constructor // TDirectory *savedir = gDirectory; fGeom = new AliTRDgeometry(); for (Int_t geomS = 0; geomS < kTrackingSectors; geomS++) { Int_t trS = geomS; fTrSec[trS] = new AliTRDtrackingSector(fGeom,geomS); } AliTRDpadPlane *padPlane = fGeom->GetPadPlane(0,0); Float_t tiltAngle = TMath::Abs(padPlane->GetTiltingAngle()); if (tiltAngle < 0.1) { fNoTilt = kTRUE; } if (!AliTRDcalibDB::Instance()) { AliFatal("Could not get calibration object"); } fTimeBinsPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins(); fDebugStreamer = new TTreeSRedirector("TRDdebug.root"); savedir->cd(); InitLogHists(); } //_____________________________________________________________________________ AliTRDtracker::~AliTRDtracker() { // // Destructor of AliTRDtracker // if (fClusters) { fClusters->Delete(); delete fClusters; } if (fTracks) { fTracks->Delete(); delete fTracks; } if (fSeeds) { fSeeds->Delete(); delete fSeeds; } if (fGeom) { delete fGeom; } for (Int_t geomS = 0; geomS < kTrackingSectors; geomS++) { delete fTrSec[geomS]; } if (fDebugStreamer) { delete fDebugStreamer; } } //_____________________________________________________________________________ Int_t AliTRDtracker::LocalToGlobalID(Int_t lid) { // // Transform internal TRD ID to global detector ID // Int_t isector = fGeom->GetSector(lid); Int_t ichamber = fGeom->GetChamber(lid); Int_t iplan = fGeom->GetPlane(lid); AliGeomManager::ELayerID iLayer = AliGeomManager::kTRD1; switch (iplan) { case 0: iLayer = AliGeomManager::kTRD1; break; case 1: iLayer = AliGeomManager::kTRD2; break; case 2: iLayer = AliGeomManager::kTRD3; break; case 3: iLayer = AliGeomManager::kTRD4; break; case 4: iLayer = AliGeomManager::kTRD5; break; case 5: iLayer = AliGeomManager::kTRD6; break; }; Int_t modId = isector * fGeom->Ncham() + ichamber; UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,modId); return volid; } //_____________________________________________________________________________ Int_t AliTRDtracker::GlobalToLocalID(Int_t gid) { // // Transform global detector ID to local detector ID // Int_t modId = 0; AliGeomManager::ELayerID layerId = AliGeomManager::VolUIDToLayer(gid,modId); Int_t isector = modId / fGeom->Ncham(); Int_t ichamber = modId % fGeom->Ncham(); Int_t iLayer = -1; switch (layerId) { case AliGeomManager::kTRD1: iLayer = 0; break; case AliGeomManager::kTRD2: iLayer = 1; break; case AliGeomManager::kTRD3: iLayer = 2; break; case AliGeomManager::kTRD4: iLayer = 3; break; case AliGeomManager::kTRD5: iLayer = 4; break; case AliGeomManager::kTRD6: iLayer = 5; break; default: iLayer =-1; } if (iLayer < 0) { return -1; } Int_t lid = fGeom->GetDetector(iLayer,ichamber,isector); return lid; } //_____________________________________________________________________________ Bool_t AliTRDtracker::AdjustSector(AliTRDtrack *track) { // // Rotates the track when necessary // Double_t alpha = AliTRDgeometry::GetAlpha(); Double_t y = track->GetY(); Double_t ymax = track->GetX()*TMath::Tan(0.5*alpha); if (y > ymax) { if (!track->Rotate( alpha)) { return kFALSE; } } else if (y < -ymax) { if (!track->Rotate(-alpha)) { return kFALSE; } } return kTRUE; } //_____________________________________________________________________________ AliTRDcluster *AliTRDtracker::GetCluster(AliTRDtrack *track, Int_t plane , Int_t timebin, UInt_t &index) { // // Try to find cluster in the backup list // AliTRDcluster *cl =0; Int_t *indexes = track->GetBackupIndexes(); for (UInt_t i = 0; i < kMaxTimeBinIndex; i++) { if (indexes[i] == 0) { break; } AliTRDcluster *cli = (AliTRDcluster *) fClusters->UncheckedAt(indexes[i]); if (!cli) { break; } if (cli->GetLocalTimeBin() != timebin) { continue; } Int_t iplane = fGeom->GetPlane(cli->GetDetector()); if (iplane == plane) { cl = cli; index = indexes[i]; break; } } return cl; } //_____________________________________________________________________________ Int_t AliTRDtracker::GetLastPlane(AliTRDtrack *track) { // // Return last updated plane // Int_t lastplane = 0; Int_t *indexes = track->GetBackupIndexes(); for (UInt_t i = 0; i < kMaxTimeBinIndex; i++) { AliTRDcluster *cli = (AliTRDcluster *) fClusters->UncheckedAt(indexes[i]); if (!cli) { break; } Int_t iplane = fGeom->GetPlane(cli->GetDetector()); if (iplane > lastplane) { lastplane = iplane; } } return lastplane; } //_____________________________________________________________________________ Int_t AliTRDtracker::PropagateBack(AliESDEvent *event) { // // Gets seeds from ESD event. The seeds are AliTPCtrack's found and // backpropagated by the TPC tracker. Each seed is first propagated // to the TRD, and then its prolongation is searched in the TRD. // If sufficiently long continuation of the track is found in the TRD // the track is updated, otherwise it's stored as originaly defined // by the TPC tracker. // Int_t found = 0; // number of tracks found Float_t foundMin = 20.0; Int_t nSeed = event->GetNumberOfTracks(); if(!nSeed){ // run stand alone tracking if (AliTRDReconstructor::SeedingOn()) Clusters2Tracks(event); return 0; } Float_t *quality = new Float_t[nSeed]; Int_t *index = new Int_t[nSeed]; for (Int_t iSeed = 0; iSeed < nSeed; iSeed++) { AliESDtrack *seed = event->GetTrack(iSeed); Double_t covariance[15]; seed->GetExternalCovariance(covariance); quality[iSeed] = covariance[0] + covariance[2]; } // Sort tracks according to covariance of local Y and Z TMath::Sort(nSeed,quality,index,kFALSE); // Backpropagate all seeds for (Int_t iSeed = 0; iSeed < nSeed; iSeed++) { // Get the seeds in sorted sequence AliESDtrack *seed = event->GetTrack(index[iSeed]); fHBackfit->Fill(0); // All seeds // Check the seed status ULong_t status = seed->GetStatus(); if ((status & AliESDtrack::kTPCout) == 0) { fHBackfit->Fill(1); // TPC outer edge reached continue; } if ((status & AliESDtrack::kTRDout) != 0) { fHBackfit->Fill(2); // TRD outer edge reached (does this happen ?) continue; } // Do the back prolongation Int_t lbl = seed->GetLabel(); AliTRDtrack *track = new AliTRDtrack(*seed); track->SetSeedLabel(lbl); seed->UpdateTrackParams(track,AliESDtrack::kTRDbackup); // Make backup fNseeds++; Float_t p4 = track->GetC(); Int_t expectedClr = FollowBackProlongation(*track); fHBackfit->Fill(3); // Back prolongation done fHX->Fill(track->GetX()); if ((TMath::Abs(track->GetC() - p4) / TMath::Abs(p4) < 0.2) || (track->Pt() > 0.8)) { fHBackfit->Fill(4); // // Make backup for back propagation // Int_t foundClr = track->GetNumberOfClusters(); if (foundClr >= foundMin) { track->CookdEdx(); track->CookdEdxTimBin(seed->GetID()); // A.Bercuci 25.07.07 CookLabel(track,1 - fgkLabelFraction); if (track->GetBackupTrack()) UseClusters(track->GetBackupTrack()); // Sign only gold tracks if (track->GetChi2() / track->GetNumberOfClusters() < 4) { if ((seed->GetKinkIndex(0) == 0) && (track->Pt() < 1.5)) { UseClusters(track); } } Bool_t isGold = kFALSE; // Full gold track if (track->GetChi2() / track->GetNumberOfClusters() < 5) { //seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup); if (track->GetBackupTrack()) { seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup); } isGold = kTRUE; //fHBackfit->Fill() } // Almost gold track if ((!isGold) && (track->GetNCross() == 0) && (track->GetChi2() / track->GetNumberOfClusters() < 7)) { //seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup); if (track->GetBackupTrack()) { seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup); } isGold = kTRUE; } if ((!isGold) && (track->GetBackupTrack())) { if ((track->GetBackupTrack()->GetNumberOfClusters() > foundMin) && ((track->GetBackupTrack()->GetChi2()/(track->GetBackupTrack()->GetNumberOfClusters()+1)) < 7)) { seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup); isGold = kTRUE; } } if ((track->StatusForTOF() > 0) && (track->GetNCross() == 0) && (Float_t(track->GetNumberOfClusters()) / Float_t(track->GetNExpected()) > 0.4)) { //seed->UpdateTrackParams(track->GetBackupTrack(), AliESDtrack::kTRDbackup); } } } /**/ /**/ // Debug part of tracking TTreeSRedirector &cstream = *fDebugStreamer; 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. if (AliTRDReconstructor::StreamLevel() > 0) { if (track->GetBackupTrack()) { cstream << "Tracks" << "EventNrInFile=" << eventNrInFile << "ESD.=" << seed << "trd.=" << track << "trdback.=" << track->GetBackupTrack() << "\n"; } else { cstream << "Tracks" << "EventNrInFile=" << eventNrInFile << "ESD.=" << seed << "trd.=" << track << "trdback.=" << track << "\n"; } } /**/ // Propagation to the TOF (I.Belikov) if (track->GetStop() == kFALSE) { fHBackfit->Fill(5); Double_t xtof = 371.0; Double_t xTOF0 = 370.0; Double_t c2 = track->GetSnp() + track->GetC() * (xtof - track->GetX()); if (TMath::Abs(c2) >= 0.99) { fHBackfit->Fill(6); delete track; continue; } PropagateToX(*track,xTOF0,fgkMaxStep); // Energy losses taken to the account - check one more time c2 = track->GetSnp() + track->GetC() * (xtof - track->GetX()); if (TMath::Abs(c2) >= 0.99) { fHBackfit->Fill(7); delete track; continue; } //if (!PropagateToX(*track,xTOF0,fgkMaxStep)) { // fHBackfit->Fill(7); //delete track; // continue; //} Double_t ymax = xtof * TMath::Tan(0.5 * AliTRDgeometry::GetAlpha()); Double_t y; track->GetYAt(xtof,GetBz(),y); if (y > ymax) { if (!track->Rotate( AliTRDgeometry::GetAlpha())) { fHBackfit->Fill(8); delete track; continue; } } else if (y < -ymax) { if (!track->Rotate(-AliTRDgeometry::GetAlpha())) { fHBackfit->Fill(9); delete track; continue; } } if (track->PropagateTo(xtof)) { seed->UpdateTrackParams(track,AliESDtrack::kTRDout); fHBackfit->Fill(10); seed->SetNumberOfTRDslices(AliTRDtrack::kNslice); for (Int_t i = 0; i < AliTRDtrack::kNplane; i++) { for (Int_t j = 0; j < AliTRDtrack::kNslice; j++) { seed->SetTRDslice(track->GetPIDsignals(i,j),i,j); } seed->SetTRDTimBin(track->GetPIDTimBin(i),i); } //seed->SetTRDtrack(new AliTRDtrack(*track)); if (track->GetNumberOfClusters() > foundMin) { fHBackfit->Fill(11); found++; } } } else { fHBackfit->Fill(12); if ((track->GetNumberOfClusters() > 15) && (track->GetNumberOfClusters() > 0.5*expectedClr)) { seed->UpdateTrackParams(track,AliESDtrack::kTRDout); fHBackfit->Fill(13); //seed->SetStatus(AliESDtrack::kTRDStop); seed->SetNumberOfTRDslices(AliTRDtrack::kNslice); for (Int_t i = 0; i < AliTRDtrack::kNplane; i++) { for (Int_t j = 0; j SetTRDslice(track->GetPIDsignals(i,j),i,j); } seed->SetTRDTimBin(track->GetPIDTimBin(i),i); } //seed->SetTRDtrack(new AliTRDtrack(*track)); found++; } } seed->SetTRDQuality(track->StatusForTOF()); seed->SetTRDBudget(track->GetBudget(0)); fHBackfit->Fill(14); delete track; } AliInfo(Form("Number of seeds: %d",fNseeds)); AliInfo(Form("Number of back propagated TRD tracks: %d",found)); fSeeds->Clear(); fNseeds = 0; delete [] index; delete [] quality; SaveLogHists(); return 0; } //_____________________________________________________________________________ Int_t AliTRDtracker::RefitInward(AliESDEvent *event) { // // Refits tracks within the TRD. The ESD event is expected to contain seeds // at the outer part of the TRD. // The tracks are propagated to the innermost time bin // of the TRD and the ESD event is updated // Origin: Thomas KUHR (Thomas.Kuhr@cern.ch) // //Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins(); //Float_t foundMin = fgkMinClustersInTrack * timeBins; Int_t nseed = 0; Int_t found = 0; Int_t pidQ = 0; //Int_t innerTB = fTrSec[0]->GetInnerTimeBin(); AliTRDtrack seed2; // Calibration fill 2D AliTRDCalibraFillHisto *calibra = AliTRDCalibraFillHisto::Instance(); if (!calibra) { AliInfo("Could not get Calibra instance\n"); } Int_t n = event->GetNumberOfTracks(); for (Int_t i = 0; i < n; i++) { AliESDtrack *seed = event->GetTrack(i); new (&seed2) AliTRDtrack(*seed); fHRefit->Fill(0); if (seed2.GetX() < 270.0) { seed->UpdateTrackParams(&seed2,AliESDtrack::kTRDbackup); // Backup TPC track - only update fHRefit->Fill(1); continue; } ULong_t status = seed->GetStatus(); if ((status & AliESDtrack::kTRDout) == 0) { fHRefit->Fill(2); continue; } if ((status & AliESDtrack::kTRDin) != 0) { fHRefit->Fill(3); continue; } nseed++; fHRefit->Fill(4); seed2.ResetCovariance(50.0); AliTRDtrack *pt = new AliTRDtrack(seed2,seed2.GetAlpha()); Int_t *indexes2 = seed2.GetIndexes(); for (Int_t l = 0; l < AliTRDtrack::kNplane;++l) { for (Int_t j = 0; j < AliTRDtrack::kNslice;j++) { pt->SetPIDsignals(seed2.GetPIDsignals(l,j),l,j); } pt->SetPIDTimBin(seed2.GetPIDTimBin(l),l); } Int_t *indexes3 = pt->GetBackupIndexes(); for (Int_t l = 0; l < 200;++l) { if (indexes2[l] == 0) { break; } indexes3[l] = indexes2[l]; } FollowProlongation(*pt); pt->CookdEdx(); pt->CookdEdxTimBin(seed->GetID()); pt->SetPIDMethod(AliTRDtrack::kLQ); //switch between TRD PID methods pt->CookPID(pidQ); if(calibra->GetHisto2d()) calibra->UpdateHistograms(pt); found++; Double_t xTPC = 250.0; if (PropagateToX(*pt,xTPC,fgkMaxStep)) { seed->UpdateTrackParams(pt,AliESDtrack::kTRDrefit); fHRefit->Fill(5); for (Int_t l = 0; l < AliTRDtrack::kNplane; ++l) { for (Int_t j = 0; j < AliTRDtrack::kNslice; j++) { seed->SetTRDslice(pt->GetPIDsignals(l,j),l,j); } seed->SetTRDTimBin(pt->GetPIDTimBin(l),l); } } else { // If not prolongation to TPC - propagate without update fHRefit->Fill(5); AliTRDtrack *seed2t = new AliTRDtrack(*seed); seed2t->ResetCovariance(5.0); AliTRDtrack *pt2 = new AliTRDtrack(*seed2t,seed2t->GetAlpha()); delete seed2t; if (PropagateToX(*pt2,xTPC,fgkMaxStep)) { pt2->CookdEdx(); pt2->CookdEdxTimBin(seed->GetID()); seed->UpdateTrackParams(pt2,AliESDtrack::kTRDrefit); fHRefit->Fill(6); for (Int_t l = 0; l < AliTRDtrack::kNplane; ++l) { for (Int_t j = 0; j < AliTRDtrack::kNslice; j++) { seed->SetTRDslice(pt2->GetPIDsignals(l,j),l,j); } seed->SetTRDTimBin(pt2->GetPIDTimBin(l),l); } } // Add TRD track to ESDfriendTrack - maybe this tracks are // not useful for post-processing - TODO make decision if (AliTRDReconstructor::StreamLevel() > 0) { seed->AddCalibObject(new AliTRDtrack(*pt2/*, kTRUE*/)); } delete pt2; } // Add TRD track to ESDfriendTrack if (AliTRDReconstructor::StreamLevel() > 0) { seed->AddCalibObject(new AliTRDtrack(*pt/*, kTRUE*/)); } delete pt; } AliInfo(Form("Number of loaded seeds: %d",nseed)); AliInfo(Form("Number of found tracks from loaded seeds: %d",found)); SaveLogHists(); return 0; } //_____________________________________________________________________________ Int_t AliTRDtracker::FollowProlongation(AliTRDtrack &t) { // // Starting from current position on track=t this function tries // to extrapolate the track up to timeBin=0 and to confirm prolongation // if a close cluster is found. Returns the number of clusters // expected to be found in sensitive layers // GeoManager used to estimate mean density // Int_t sector; Int_t lastplane = GetLastPlane(&t); Double_t xx0 = 0.0; Double_t xrho= 0.0; Int_t expectedNumberOfClusters = 0; for (Int_t iplane = lastplane; iplane >= 0; iplane--) { Int_t row0 = GetGlobalTimeBin(0,iplane,GetTimeBinsPerPlane()-1); Int_t rowlast = GetGlobalTimeBin(0,iplane,0); // Propagate track close to the plane if neccessary Double_t currentx = fTrSec[0]->GetLayer(rowlast)->GetX(); if (currentx < (-fgkMaxStep + t.GetX())) { // Propagate closer to chamber - safety space fgkMaxStep if (!PropagateToX(t,currentx+fgkMaxStep,fgkMaxStep)) { break; } } if (!AdjustSector(&t)) { break; } // Get material budget Double_t xyz0[3]; Double_t xyz1[3]; Double_t param[7]; Double_t x; Double_t y; Double_t z; // Starting global position t.GetXYZ(xyz0); // End global position x = fTrSec[0]->GetLayer(row0)->GetX(); if (!t.GetProlongation(x,y,z)) { break; } xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha()); xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha()); xyz1[2] = z; AliTracker::MeanMaterialBudget(xyz0,xyz1,param); xrho= param[0]*param[4]; xx0 = param[1]; // Get mean propagation parameters // Flags for marking the track momentum and direction. The track is // marked only if it has at least 1 cluster picked up in the current // chamber. Bool_t kUPDATED = kFALSE; Bool_t kMARKED = kFALSE; // Propagate and update sector = t.GetSector(); //for (Int_t itime=GetTimeBinsPerPlane()-1;itime>=0;itime--) { for (Int_t itime = 0 ; itime < GetTimeBinsPerPlane(); itime++) { // Mark track kinematics if (itime > 10 && kUPDATED && !kMARKED) { t.SetTrackSegmentDirMom(iplane); kMARKED = kTRUE; } Int_t ilayer = GetGlobalTimeBin(0,iplane,itime); expectedNumberOfClusters++; t.SetNExpected(t.GetNExpected() + 1); if (t.GetX() > 345.0) { t.SetNExpectedLast(t.GetNExpectedLast() + 1); } AliTRDpropagationLayer &timeBin = *(fTrSec[sector]->GetLayer(ilayer)); AliTRDcluster *cl = 0; UInt_t index = 0; Double_t maxChi2 = fgkMaxChi2; x = timeBin.GetX(); if (timeBin) { AliTRDcluster *cl0 = timeBin[0]; if (!cl0) { // No clusters in given time bin continue; } Int_t plane = fGeom->GetPlane(cl0->GetDetector()); if (plane > lastplane) { continue; } Int_t timebin = cl0->GetLocalTimeBin(); AliTRDcluster *cl2 = GetCluster(&t,plane,timebin,index); if (cl2) { cl = cl2; //Double_t h01 = GetTiltFactor(cl); //I.B's fix //maxChi2=t.GetPredictedChi2(cl,h01); } if (cl) { //if (cl->GetNPads()<5) Double_t dxsample = timeBin.GetdX(); t.SetSampledEdx(TMath::Abs(cl->GetQ()/dxsample)); Double_t h01 = GetTiltFactor(cl); Int_t det = cl->GetDetector(); Int_t pplane = fGeom->GetPlane(det); if (t.GetX() > 345.0) { t.SetNLast(t.GetNLast() + 1); t.SetChi2Last(t.GetChi2Last() + maxChi2); } Double_t xcluster = cl->GetX(); t.PropagateTo(xcluster,xx0,xrho); if (!AdjustSector(&t)) { break; //I.B's fix } maxChi2 = t.GetPredictedChi2(cl,h01); if (maxChi2 < 1e+10) { if (!t.UpdateMI(cl,maxChi2,index,h01,pplane)) { // ???? } else { //SetCluster(cl, GetNumberOfClusters()-1); kUPDATED = kTRUE; } } } } } } return expectedNumberOfClusters; } //_____________________________________________________________________________ Int_t AliTRDtracker::FollowBackProlongation(AliTRDtrack &t) { // // Starting from current radial position of track this function // extrapolates the track up to the outer timebin and in the sensitive // layers confirms prolongation if a close cluster is found. // Returns the number of clusters expected to be found in sensitive layers // Uses the geomanager for material description // // return number of assigned clusters ? // Int_t sector; Double_t xx0 = 0.0; Double_t xrho = 0.0; Float_t ratio0 = 0.0; Int_t expectedNumberOfClusters = 0; AliTRDtracklet tracklet; const Int_t kNclusters = 1000; Int_t clusters[kNclusters]; for (Int_t i = 0; i < kNclusters; i++) { clusters[i] = -1; } // // Calibration fill 2D // AliTRDCalibraFillHisto *calibra = AliTRDCalibraFillHisto::Instance(); // if (!calibra) { // AliInfo("Could not get Calibra instance\n"); // } // if (calibra->GetMITracking()) { // calibra->ResetTrack(); // } // Loop through the TRD planes for (Int_t iplane = 0; iplane < AliTRDtrack::kNplane; iplane++) { Int_t hb = iplane * 10; fHClSearch->Fill(hb); // Get the global time bin numbers for the first an last // local time bin of the given plane Int_t row0 = GetGlobalTimeBin(0,iplane,GetTimeBinsPerPlane()-1); Int_t rowlast = GetGlobalTimeBin(0,iplane,0); // Get the X coordinates of the propagation layer for the first time bin Double_t currentx = fTrSec[0]->GetLayer(row0)->GetX(); if (currentx < t.GetX()) { fHClSearch->Fill(hb+1); continue; } // Propagate closer to the current chamber if neccessary if (currentx > (fgkMaxStep + t.GetX())) { if (!PropagateToX(t,currentx-fgkMaxStep,fgkMaxStep)) { fHClSearch->Fill(hb+2); break; } } // Rotate track to adjacent sector if neccessary if (!AdjustSector(&t)) { fHClSearch->Fill(hb+3); break; } // Check whether azimuthal angle is getting too large if (TMath::Abs(t.GetSnp()) > fgkMaxSnp) { fHClSearch->Fill(hb+4); break; } Double_t xyz0[3]; Double_t xyz1[3]; Double_t param[7]; Double_t x; Double_t y; Double_t z; // Global start position (beginning of chamber) t.GetXYZ(xyz0); // X-position of the end of the chamber x = fTrSec[0]->GetLayer(rowlast)->GetX(); // Get local Y and Z at the X-position of the end of the chamber if (!t.GetProlongation(x,y,z)) { fHClSearch->Fill(hb+5); break; } // Global end position (end of chamber) xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha()); xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha()); xyz1[2] = z; // Calculate the mean material budget along the path inside the chamber AliTracker::MeanMaterialBudget(xyz0,xyz1,param); // The mean propagation parameters (density*length and radiation length) xrho = param[0]*param[4]; xx0 = param[1]; // Find the clusters and tracklet along the path inside the chamber sector = t.GetSector(); Float_t ncl = FindClusters(sector,row0,rowlast,&t,clusters,tracklet); fHNCl->Fill(tracklet.GetN()); // Discard if in less than 1/3 of the available timebins // clusters are found if (tracklet.GetN() < GetTimeBinsPerPlane()/3) { fHClSearch->Fill(hb+6); continue; } // // Propagate and update track // for (Int_t itime = GetTimeBinsPerPlane()-1; itime >= 0; itime--) { Int_t ilayer = GetGlobalTimeBin(0, iplane,itime); expectedNumberOfClusters++; t.SetNExpected(t.GetNExpected() + 1); if (t.GetX() > 345.0) { t.SetNExpectedLast(t.GetNExpectedLast() + 1); } AliTRDpropagationLayer &timeBin = *(fTrSec[sector]->GetLayer(ilayer)); AliTRDcluster *cl = 0; UInt_t index = 0; Double_t maxChi2 = fgkMaxChi2; x = timeBin.GetX(); if (timeBin) { if (clusters[ilayer] > 0) { index = clusters[ilayer]; cl = (AliTRDcluster *)GetCluster(index); //Double_t h01 = GetTiltFactor(cl); // I.B's fix //maxChi2=t.GetPredictedChi2(cl,h01); // } if (cl) { //if (cl->GetNPads() < 5) Double_t dxsample = timeBin.GetdX(); t.SetSampledEdx(TMath::Abs(cl->GetQ()/dxsample)); Double_t h01 = GetTiltFactor(cl); Int_t det = cl->GetDetector(); Int_t plane = fGeom->GetPlane(det); if (t.GetX() > 345.0) { t.SetNLast(t.GetNLast() + 1); t.SetChi2Last(t.GetChi2Last() + maxChi2); } Double_t xcluster = cl->GetX(); t.PropagateTo(xcluster,xx0,xrho); maxChi2 = t.GetPredictedChi2(cl,h01); if (maxChi2<1e+10) if (!t.UpdateMI(cl,maxChi2,index,h01,plane)) { if (!t.Update(cl,maxChi2,index,h01)) { // ???? } } // else SetCluster(cl, GetNumberOfClusters()-1); // A.Bercuci 25.07.07 // if (calibra->GetMITracking()) { // calibra->UpdateHistograms(cl,&t); // } // Reset material budget if 2 consecutive gold if (plane > 0) { if ((t.GetTracklets(plane).GetN() + t.GetTracklets(plane-1).GetN()) > 20) { t.SetBudget(2,0.0); } } } } } ratio0 = ncl / Float_t(fTimeBinsPerPlane); Float_t ratio1 = Float_t(t.GetNumberOfClusters()+1) / Float_t(t.GetNExpected()+1); if ((tracklet.GetChi2() < 18.0) && (ratio0 > 0.8) && (ratio1 > 0.6) && (ratio0+ratio1 > 1.5) && (t.GetNCross() == 0) && (TMath::Abs(t.GetSnp()) < 0.85) && (t.GetNumberOfClusters() > 20)){ //if (ratio0 > 0.8) { t.MakeBackupTrack(); // Make backup of the track until is gold } } return expectedNumberOfClusters; } //_____________________________________________________________________________ Int_t AliTRDtracker::PropagateToX(AliTRDtrack &t, Double_t xToGo, Double_t maxStep) { // // Starting from current X-position of track this function // extrapolates the track up to radial position . // Returns 1 if track reaches the plane, and 0 otherwise // const Double_t kEpsilon = 0.00001; // Current track X-position Double_t xpos = t.GetX(); // Direction: inward or outward Double_t dir = (xpos < xToGo) ? 1.0 : -1.0; while (((xToGo - xpos) * dir) > kEpsilon) { Double_t xyz0[3]; Double_t xyz1[3]; Double_t param[7]; Double_t x; Double_t y; Double_t z; // The next step size Double_t step = dir * TMath::Min(TMath::Abs(xToGo-xpos),maxStep); // Get the global position of the starting point t.GetXYZ(xyz0); // X-position after next step x = xpos + step; // Get local Y and Z at the X-position of the next step if (!t.GetProlongation(x,y,z)) { return 0; // No prolongation possible } // The global position of the end point of this prolongation step xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha()); xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha()); xyz1[2] = z; // Calculate the mean material budget between start and // end point of this prolongation step AliTracker::MeanMaterialBudget(xyz0,xyz1,param); // Propagate the track to the X-position after the next step if (!t.PropagateTo(x,param[1],param[0]*param[4])) { return 0; } // Rotate the track if necessary AdjustSector(&t); // New track X-position xpos = t.GetX(); } return 1; } //_____________________________________________________________________________ Int_t AliTRDtracker::LoadClusters(TTree *cTree) { // // Fills clusters into TRD tracking_sectors // Note that the numbering scheme for the TRD tracking_sectors // differs from that of TRD sectors // if (ReadClusters(fClusters, cTree)) { AliError("Problem with reading the clusters !"); return 1; } Int_t ncl = fClusters->GetEntriesFast(); fNclusters = ncl; AliInfo(Form("Sorting %d clusters",ncl)); UInt_t index; while (ncl--) { AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(ncl); Int_t detector = c->GetDetector(); Int_t localTimeBin = c->GetLocalTimeBin(); Int_t sector = fGeom->GetSector(detector); Int_t plane = fGeom->GetPlane(detector); Int_t trackingSector = sector; //if (c->GetQ() > 10) { // Int_t chamber = fGeom->GetChamber(detector); //} Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(plane,localTimeBin); if (gtb < 0) { continue; } Int_t layer = fTrSec[trackingSector]->GetLayerNumber(gtb); index = ncl; fHXCl->Fill(c->GetX()); fTrSec[trackingSector]->GetLayer(layer)->SetX(c->GetX()); fTrSec[trackingSector]->GetLayer(layer)->InsertCluster(c,index); } return 0; } //_____________________________________________________________________________ void AliTRDtracker::UnloadClusters() { // // Clears the arrays of clusters and tracks. Resets sectors and timebins // Int_t i; Int_t nentr; nentr = fClusters->GetEntriesFast(); for (i = 0; i < nentr; i++) { delete fClusters->RemoveAt(i); } fNclusters = 0; nentr = fSeeds->GetEntriesFast(); for (i = 0; i < nentr; i++) { delete fSeeds->RemoveAt(i); } nentr = fTracks->GetEntriesFast(); for (i = 0; i < nentr; i++) { delete fTracks->RemoveAt(i); } Int_t nsec = AliTRDgeometry::kNsect; for (i = 0; i < nsec; i++) { for(Int_t pl = 0; pl < fTrSec[i]->GetNumberOfLayers(); pl++) { fTrSec[i]->GetLayer(pl)->Clear(); } } } //_____________________________________________________________________________ Int_t AliTRDtracker::Clusters2Tracks(AliESDEvent *esd) { // // Creates seeds using clusters between position inner plane and outer plane // const Double_t kMaxTheta = 1.0; const Double_t kMaxPhi = 2.0; const Double_t kRoad0y = 6.0; // Road for middle cluster const Double_t kRoad0z = 8.5; // Road for middle cluster const Double_t kRoad1y = 2.0; // Road in y for seeded cluster const Double_t kRoad1z = 20.0; // Road in z for seeded cluster const Double_t kRoad2y = 3.0; // Road in y for extrapolated cluster const Double_t kRoad2z = 20.0; // Road in z for extrapolated cluster const Int_t kMaxSeed = 3000; Int_t maxSec = AliTRDgeometry::kNsect; // Linear fitters in planes TLinearFitter fitterTC(2,"hyp2"); // Fitting with tilting pads - kz fixed - kz= Z/x, + vertex const TLinearFitter fitterT2(4,"hyp4"); // Fitting with tilting pads - kz not fixed fitterTC.StoreData(kTRUE); fitterT2.StoreData(kTRUE); AliRieman rieman(1000); // Rieman fitter AliRieman rieman2(1000); // Rieman fitter // Find the maximal and minimal layer for the planes Int_t layers[6][2]; AliTRDpropagationLayer *reflayers[6]; for (Int_t i = 0; i < 6; i++) { layers[i][0] = 10000; layers[i][1] = 0; } for (Int_t ns = 0; ns < maxSec; ns++) { for (Int_t ilayer = 0; ilayer < fTrSec[ns]->GetNumberOfLayers(); ilayer++) { AliTRDpropagationLayer &layer = *(fTrSec[ns]->GetLayer(ilayer)); if (layer == 0) { continue; } Int_t det = layer[0]->GetDetector(); Int_t plane = fGeom->GetPlane(det); if (ilayer < layers[plane][0]) { layers[plane][0] = ilayer; } if (ilayer > layers[plane][1]) { layers[plane][1] = ilayer; } } } AliTRDpadPlane *padPlane = fGeom->GetPadPlane(0,0); Double_t h01 = TMath::Tan(-TMath::Pi() / 180.0 * padPlane->GetTiltingAngle()); Double_t hL[6]; // Tilting angle Double_t xcl[6]; // X - position of reference cluster Double_t ycl[6]; // Y - position of reference cluster Double_t zcl[6]; // Z - position of reference cluster AliTRDcluster *cl[6] = { 0, 0, 0, 0, 0, 0 }; // Seeding clusters Float_t padlength[6] = { 10.0, 10.0, 10.0, 10.0, 10.0, 10.0 }; // Current pad-length Double_t chi2R = 0.0; Double_t chi2Z = 0.0; Double_t chi2RF = 0.0; Double_t chi2ZF = 0.0; Int_t nclusters; // Total number of clusters for (Int_t i = 0; i < 6; i++) { hL[i] = h01; if (i%2==1) { hL[i]*=-1.0; } } // Registered seed AliTRDseed *pseed = new AliTRDseed[kMaxSeed*6]; AliTRDseed *seed[kMaxSeed]; for (Int_t iseed = 0; iseed < kMaxSeed; iseed++) { seed[iseed]= &pseed[iseed*6]; } AliTRDseed *cseed = seed[0]; Double_t seedquality[kMaxSeed]; Double_t seedquality2[kMaxSeed]; Double_t seedparams[kMaxSeed][7]; Int_t seedlayer[kMaxSeed]; Int_t registered = 0; Int_t sort[kMaxSeed]; // // Seeding part // for (Int_t ns = 0; ns < maxSec; ns++) { // Loop over sectors //for (Int_t ns = 0; ns < 5; ns++) { // Loop over sectors registered = 0; // Reset registerd seed counter cseed = seed[registered]; Float_t iter = 0.0; for (Int_t sLayer = 2; sLayer >= 0; sLayer--) { //for (Int_t dseed = 5; dseed < 15; dseed += 3) { iter += 1.0; Int_t dseed = 5 + Int_t(iter) * 3; // Initialize seeding layers for (Int_t ilayer = 0; ilayer < 6; ilayer++) { reflayers[ilayer] = fTrSec[ns]->GetLayer(layers[ilayer][1]-dseed); xcl[ilayer] = reflayers[ilayer]->GetX(); } Double_t xref = (xcl[sLayer+1] + xcl[sLayer+2]) * 0.5; AliTRDpropagationLayer &layer0 = *reflayers[sLayer+0]; AliTRDpropagationLayer &layer1 = *reflayers[sLayer+1]; AliTRDpropagationLayer &layer2 = *reflayers[sLayer+2]; AliTRDpropagationLayer &layer3 = *reflayers[sLayer+3]; Int_t maxn3 = layer3; for (Int_t icl3 = 0; icl3 < maxn3; icl3++) { AliTRDcluster *cl3 = layer3[icl3]; if (!cl3) { continue; } padlength[sLayer+3] = TMath::Sqrt(cl3->GetSigmaZ2() * 12.0); ycl[sLayer+3] = cl3->GetY(); zcl[sLayer+3] = cl3->GetZ(); Float_t yymin0 = ycl[sLayer+3] - 1.0 - kMaxPhi * (xcl[sLayer+3]-xcl[sLayer+0]); Float_t yymax0 = ycl[sLayer+3] + 1.0 + kMaxPhi * (xcl[sLayer+3]-xcl[sLayer+0]); Int_t maxn0 = layer0; for (Int_t icl0 = layer0.Find(yymin0); icl0 < maxn0; icl0++) { AliTRDcluster *cl0 = layer0[icl0]; if (!cl0) { continue; } if (cl3->IsUsed() && cl0->IsUsed()) { continue; } ycl[sLayer+0] = cl0->GetY(); zcl[sLayer+0] = cl0->GetZ(); if (ycl[sLayer+0] > yymax0) { break; } Double_t tanphi = (ycl[sLayer+3]-ycl[sLayer+0]) / (xcl[sLayer+3]-xcl[sLayer+0]); if (TMath::Abs(tanphi) > kMaxPhi) { continue; } Double_t tantheta = (zcl[sLayer+3]-zcl[sLayer+0]) / (xcl[sLayer+3]-xcl[sLayer+0]); if (TMath::Abs(tantheta) > kMaxTheta) { continue; } padlength[sLayer+0] = TMath::Sqrt(cl0->GetSigmaZ2() * 12.0); // Expected position in 1 layer Double_t y1exp = ycl[sLayer+0] + (tanphi) * (xcl[sLayer+1]-xcl[sLayer+0]); Double_t z1exp = zcl[sLayer+0] + (tantheta) * (xcl[sLayer+1]-xcl[sLayer+0]); Float_t yymin1 = y1exp - kRoad0y - tanphi; Float_t yymax1 = y1exp + kRoad0y + tanphi; Int_t maxn1 = layer1; for (Int_t icl1 = layer1.Find(yymin1); icl1 < maxn1; icl1++) { AliTRDcluster *cl1 = layer1[icl1]; if (!cl1) { continue; } Int_t nusedCl = 0; if (cl3->IsUsed()) nusedCl++; if (cl0->IsUsed()) nusedCl++; if (cl1->IsUsed()) nusedCl++; if (nusedCl > 1) { continue; } ycl[sLayer+1] = cl1->GetY(); zcl[sLayer+1] = cl1->GetZ(); if (ycl[sLayer+1] > yymax1) { break; } if (TMath::Abs(ycl[sLayer+1]-y1exp) > kRoad0y+tanphi) { continue; } if (TMath::Abs(zcl[sLayer+1]-z1exp) > kRoad0z) { continue; } padlength[sLayer+1] = TMath::Sqrt(cl1->GetSigmaZ2() * 12.0); Double_t y2exp = ycl[sLayer+0]+(tanphi) * (xcl[sLayer+2]-xcl[sLayer+0]) + (ycl[sLayer+1]-y1exp); Double_t z2exp = zcl[sLayer+0]+(tantheta) * (xcl[sLayer+2]-xcl[sLayer+0]); Int_t index2 = layer2.FindNearestCluster(y2exp,z2exp,kRoad1y,kRoad1z); if (index2 <= 0) { continue; } AliTRDcluster *cl2 = (AliTRDcluster *) GetCluster(index2); padlength[sLayer+2] = TMath::Sqrt(cl2->GetSigmaZ2() * 12.0); ycl[sLayer+2] = cl2->GetY(); zcl[sLayer+2] = cl2->GetZ(); if (TMath::Abs(cl2->GetZ()-z2exp) > kRoad0z) { continue; } rieman.Reset(); rieman.AddPoint(xcl[sLayer+0],ycl[sLayer+0],zcl[sLayer+0],1,10); rieman.AddPoint(xcl[sLayer+1],ycl[sLayer+1],zcl[sLayer+1],1,10); rieman.AddPoint(xcl[sLayer+3],ycl[sLayer+3],zcl[sLayer+3],1,10); rieman.AddPoint(xcl[sLayer+2],ycl[sLayer+2],zcl[sLayer+2],1,10); rieman.Update(); // Reset fitter for (Int_t iLayer = 0; iLayer < 6; iLayer++) { cseed[iLayer].Reset(); } chi2Z = 0.0; chi2R = 0.0; for (Int_t iLayer = 0; iLayer < 4; iLayer++) { cseed[sLayer+iLayer].SetZref(0,rieman.GetZat(xcl[sLayer+iLayer])); chi2Z += (cseed[sLayer+iLayer].GetZref(0)- zcl[sLayer+iLayer]) * (cseed[sLayer+iLayer].GetZref(0)- zcl[sLayer+iLayer]); cseed[sLayer+iLayer].SetZref(1,rieman.GetDZat(xcl[sLayer+iLayer])); cseed[sLayer+iLayer].SetYref(0,rieman.GetYat(xcl[sLayer+iLayer])); chi2R += (cseed[sLayer+iLayer].GetYref(0)- ycl[sLayer+iLayer]) * (cseed[sLayer+iLayer].GetYref(0)- ycl[sLayer+iLayer]); cseed[sLayer+iLayer].SetYref(1,rieman.GetDYat(xcl[sLayer+iLayer])); } if (TMath::Sqrt(chi2R) > 1.0/iter) { continue; } if (TMath::Sqrt(chi2Z) > 7.0/iter) { continue; } Float_t minmax[2] = { -100.0, 100.0 }; for (Int_t iLayer = 0; iLayer < 4; iLayer++) { Float_t max = zcl[sLayer+iLayer]+padlength[sLayer+iLayer] * 0.5 + 1.0 - cseed[sLayer+iLayer].GetZref(0); if (max < minmax[1]) { minmax[1] = max; } Float_t min = zcl[sLayer+iLayer]-padlength[sLayer+iLayer] * 0.5 - 1.0 - cseed[sLayer+iLayer].GetZref(0); if (min > minmax[0]) { minmax[0] = min; } } Bool_t isFake = kFALSE; if (cl0->GetLabel(0) != cl3->GetLabel(0)) { isFake = kTRUE; } if (cl1->GetLabel(0) != cl3->GetLabel(0)) { isFake = kTRUE; } if (cl2->GetLabel(0) != cl3->GetLabel(0)) { isFake = kTRUE; } if (AliTRDReconstructor::StreamLevel() > 0) { if ((!isFake) || ((icl3%10) == 0)) { // Debugging print TTreeSRedirector &cstream = *fDebugStreamer; cstream << "Seeds0" << "isFake=" << isFake << "Cl0.=" << cl0 << "Cl1.=" << cl1 << "Cl2.=" << cl2 << "Cl3.=" << cl3 << "Xref=" << xref << "X0=" << xcl[sLayer+0] << "X1=" << xcl[sLayer+1] << "X2=" << xcl[sLayer+2] << "X3=" << xcl[sLayer+3] << "Y2exp=" << y2exp << "Z2exp=" << z2exp << "Chi2R=" << chi2R << "Chi2Z=" << chi2Z << "Seed0.=" << &cseed[sLayer+0] << "Seed1.=" << &cseed[sLayer+1] << "Seed2.=" << &cseed[sLayer+2] << "Seed3.=" << &cseed[sLayer+3] << "Zmin=" << minmax[0] << "Zmax=" << minmax[1] << "\n"; } } //////////////////////////////////////////////////////////////////////////////////// // // Fit seeding part // //////////////////////////////////////////////////////////////////////////////////// cl[sLayer+0] = cl0; cl[sLayer+1] = cl1; cl[sLayer+2] = cl2; cl[sLayer+3] = cl3; Bool_t isOK = kTRUE; for (Int_t jLayer = 0; jLayer < 4; jLayer++) { cseed[sLayer+jLayer].SetTilt(hL[sLayer+jLayer]); cseed[sLayer+jLayer].SetPadLength(padlength[sLayer+jLayer]); cseed[sLayer+jLayer].SetX0(xcl[sLayer+jLayer]); for (Int_t jter = 0; jter < 2; jter++) { // // In iteration 0 we try only one pad-row // If quality not sufficient we try 2 pad-rows - about 5% of tracks cross 2 pad-rows // AliTRDseed tseed = cseed[sLayer+jLayer]; Float_t roadz = padlength[sLayer+jLayer] * 0.5; if (jter > 0) { roadz = padlength[sLayer+jLayer]; } Float_t quality = 10000.0; for (Int_t iTime = 2; iTime < 20; iTime++) { AliTRDpropagationLayer &layer = *(fTrSec[ns]->GetLayer(layers[sLayer+jLayer][1]-iTime)); Double_t dxlayer = layer.GetX() - xcl[sLayer+jLayer]; Double_t zexp = cl[sLayer+jLayer]->GetZ(); if (jter > 0) { // Try 2 pad-rows in second iteration zexp = tseed.GetZref(0) + tseed.GetZref(1) * dxlayer; if (zexp > cl[sLayer+jLayer]->GetZ()) { zexp = cl[sLayer+jLayer]->GetZ() + padlength[sLayer+jLayer]*0.5; } if (zexp < cl[sLayer+jLayer]->GetZ()) { zexp = cl[sLayer+jLayer]->GetZ() - padlength[sLayer+jLayer]*0.5; } } Double_t yexp = tseed.GetYref(0) + tseed.GetYref(1) * dxlayer; Int_t index = layer.FindNearestCluster(yexp,zexp,kRoad1y,roadz); if (index <= 0) { continue; } AliTRDcluster *clu = (AliTRDcluster *) GetCluster(index); tseed.SetIndexes(iTime,index); tseed.SetClusters(iTime,clu); // Register cluster tseed.SetX(iTime,dxlayer); // Register cluster tseed.SetY(iTime,clu->GetY()); // Register cluster tseed.SetZ(iTime,clu->GetZ()); // Register cluster } tseed.Update(); // Count the number of clusters and distortions into quality Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1); Float_t tquality = (18.0 - tseed.GetN2()) / 2.0 + TMath::Abs(dangle) / 0.1 + TMath::Abs(tseed.GetYfit(0) - tseed.GetYref(0)) / 0.2 + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer]; if ((jter == 0) && tseed.IsOK()) { cseed[sLayer+jLayer] = tseed; quality = tquality; if (tquality < 5) { break; } } if (tseed.IsOK() && (tquality < quality)) { cseed[sLayer+jLayer] = tseed; } } // Loop: jter if (!cseed[sLayer+jLayer].IsOK()) { isOK = kFALSE; break; } cseed[sLayer+jLayer].CookLabels(); cseed[sLayer+jLayer].UpdateUsed(); nusedCl += cseed[sLayer+jLayer].GetNUsed(); if (nusedCl > 25) { isOK = kFALSE; break; } } // Loop: jLayer if (!isOK) { continue; } nclusters = 0; for (Int_t iLayer = 0; iLayer < 4; iLayer++) { if (cseed[sLayer+iLayer].IsOK()) { nclusters += cseed[sLayer+iLayer].GetN2(); } } // Iteration 0 rieman.Reset(); for (Int_t iLayer = 0; iLayer < 4; iLayer++) { rieman.AddPoint(xcl[sLayer+iLayer] ,cseed[sLayer+iLayer].GetYfitR(0) ,cseed[sLayer+iLayer].GetZProb() ,1 ,10); } rieman.Update(); chi2R = 0.0; chi2Z = 0.0; for (Int_t iLayer = 0; iLayer < 4; iLayer++) { cseed[sLayer+iLayer].SetYref(0,rieman.GetYat(xcl[sLayer+iLayer])); chi2R += (cseed[sLayer+iLayer].GetYref(0) - cseed[sLayer+iLayer].GetYfitR(0)) * (cseed[sLayer+iLayer].GetYref(0) - cseed[sLayer+iLayer].GetYfitR(0)); cseed[sLayer+iLayer].SetYref(1,rieman.GetDYat(xcl[sLayer+iLayer])); cseed[sLayer+iLayer].SetZref(0,rieman.GetZat(xcl[sLayer+iLayer])); chi2Z += (cseed[sLayer+iLayer].GetZref(0) - cseed[sLayer+iLayer].GetMeanz()) * (cseed[sLayer+iLayer].GetZref(0) - cseed[sLayer+iLayer].GetMeanz()); cseed[sLayer+iLayer].SetZref(1,rieman.GetDZat(xcl[sLayer+iLayer])); } Double_t curv = rieman.GetC(); // // Likelihoods // Double_t sumda = TMath::Abs(cseed[sLayer+0].GetYfitR(1) - cseed[sLayer+0].GetYref(1)) + TMath::Abs(cseed[sLayer+1].GetYfitR(1) - cseed[sLayer+1].GetYref(1)) + TMath::Abs(cseed[sLayer+2].GetYfitR(1) - cseed[sLayer+2].GetYref(1)) + TMath::Abs(cseed[sLayer+3].GetYfitR(1) - cseed[sLayer+3].GetYref(1)); Double_t likea = TMath::Exp(-sumda*10.6); Double_t likechi2 = 0.0000000001; if (chi2R < 0.5) { likechi2 += TMath::Exp(-TMath::Sqrt(chi2R) * 7.73); } Double_t likechi2z = TMath::Exp(-chi2Z * 0.088) / TMath::Exp(-chi2Z * 0.019); Double_t likeN = TMath::Exp(-(72 - nclusters) * 0.19); Double_t like = likea * likechi2 * likechi2z * likeN; Double_t likePrimY = TMath::Exp(-TMath::Abs(cseed[sLayer+0].GetYref(1) - 130.0*curv) * 1.9); Double_t likePrimZ = TMath::Exp(-TMath::Abs(cseed[sLayer+0].GetZref(1) - cseed[sLayer+0].GetZref(0) / xcl[sLayer+0]) * 5.9); Double_t likePrim = TMath::Max(likePrimY*likePrimZ,0.0005); seedquality[registered] = like; seedlayer[registered] = sLayer; if (TMath::Log(0.000000000000001 + like) < -15) { continue; } AliTRDseed seedb[6]; for (Int_t iLayer = 0; iLayer < 6; iLayer++) { seedb[iLayer] = cseed[iLayer]; } //////////////////////////////////////////////////////////////////////////////////// // // Full track fit part // //////////////////////////////////////////////////////////////////////////////////// Int_t nlayers = 0; Int_t nusedf = 0; Int_t findable = 0; // // Add new layers - avoid long extrapolation // Int_t tLayer[2] = { 0, 0 }; if (sLayer == 2) { tLayer[0] = 1; tLayer[1] = 0; } if (sLayer == 1) { tLayer[0] = 5; tLayer[1] = 0; } if (sLayer == 0) { tLayer[0] = 4; tLayer[1] = 5; } for (Int_t iLayer = 0; iLayer < 2; iLayer++) { Int_t jLayer = tLayer[iLayer]; // Set tracking layer cseed[jLayer].Reset(); cseed[jLayer].SetTilt(hL[jLayer]); cseed[jLayer].SetPadLength(padlength[jLayer]); cseed[jLayer].SetX0(xcl[jLayer]); // Get pad length and rough cluster Int_t indexdummy = reflayers[jLayer]->FindNearestCluster(cseed[jLayer].GetYref(0) ,cseed[jLayer].GetZref(0) ,kRoad2y ,kRoad2z); if (indexdummy <= 0) { continue; } AliTRDcluster *cldummy = (AliTRDcluster *) GetCluster(indexdummy); padlength[jLayer] = TMath::Sqrt(cldummy->GetSigmaZ2() * 12.0); } AliTRDseed::FitRiemanTilt(cseed,kTRUE); for (Int_t iLayer = 0; iLayer < 2; iLayer++) { Int_t jLayer = tLayer[iLayer]; // set tracking layer if ((jLayer == 0) && !(cseed[1].IsOK())) { continue; // break not allowed } if ((jLayer == 5) && !(cseed[4].IsOK())) { continue; // break not allowed } Float_t zexp = cseed[jLayer].GetZref(0); Double_t zroad = padlength[jLayer] * 0.5 + 1.0; for (Int_t jter = 0; jter < 2; jter++) { AliTRDseed tseed = cseed[jLayer]; Float_t quality = 10000.0; for (Int_t iTime = 2; iTime < 20; iTime++) { AliTRDpropagationLayer &layer = *(fTrSec[ns]->GetLayer(layers[jLayer][1]-iTime)); Double_t dxlayer = layer.GetX()-xcl[jLayer]; Double_t yexp = tseed.GetYref(0) + tseed.GetYref(1) * dxlayer; Float_t yroad = kRoad1y; Int_t index = layer.FindNearestCluster(yexp,zexp,yroad,zroad); if (index <= 0) { continue; } AliTRDcluster *clu = (AliTRDcluster *) GetCluster(index); tseed.SetIndexes(iTime,index); tseed.SetClusters(iTime,clu); // Register cluster tseed.SetX(iTime,dxlayer); // Register cluster tseed.SetY(iTime,clu->GetY()); // Register cluster tseed.SetZ(iTime,clu->GetZ()); // Register cluster } tseed.Update(); if (tseed.IsOK()) { Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1); Float_t tquality = (18.0 - tseed.GetN2())/2.0 + TMath::Abs(dangle) / 0.1 + TMath::Abs(tseed.GetYfit(0) - tseed.GetYref(0)) / 0.2 + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer]; if (tquality < quality) { cseed[jLayer] = tseed; quality = tquality; } } zroad *= 2.0; } // Loop: jter if ( cseed[jLayer].IsOK()) { cseed[jLayer].CookLabels(); cseed[jLayer].UpdateUsed(); nusedf += cseed[jLayer].GetNUsed(); AliTRDseed::FitRiemanTilt(cseed,kTRUE); } } // Loop: iLayer // Make copy AliTRDseed bseed[6]; for (Int_t jLayer = 0; jLayer < 6; jLayer++) { bseed[jLayer] = cseed[jLayer]; } Float_t lastquality = 10000.0; Float_t lastchi2 = 10000.0; Float_t chi2 = 1000.0; for (Int_t jter = 0; jter < 4; jter++) { // Sort tracklets according "quality", try to "improve" 4 worst Float_t sumquality = 0.0; Float_t squality[6]; Int_t sortindexes[6]; for (Int_t jLayer = 0; jLayer < 6; jLayer++) { if (bseed[jLayer].IsOK()) { AliTRDseed &tseed = bseed[jLayer]; Double_t zcor = tseed.GetTilt() * (tseed.GetZProb() - tseed.GetZref(0)); Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1); Float_t tquality = (18.0 - tseed.GetN2()) / 2.0 + TMath::Abs(dangle) / 0.1 + TMath::Abs(tseed.GetYfit(0) - (tseed.GetYref(0) - zcor)) / 0.2 + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer]; squality[jLayer] = tquality; } else { squality[jLayer] = -1.0; } sumquality +=squality[jLayer]; } if ((sumquality >= lastquality) || (chi2 > lastchi2)) { break; } lastquality = sumquality; lastchi2 = chi2; if (jter > 0) { for (Int_t jLayer = 0; jLayer < 6; jLayer++) { cseed[jLayer] = bseed[jLayer]; } } TMath::Sort(6,squality,sortindexes,kFALSE); for (Int_t jLayer = 5; jLayer > 1; jLayer--) { Int_t bLayer = sortindexes[jLayer]; AliTRDseed tseed = bseed[bLayer]; for (Int_t iTime = 2; iTime < 20; iTime++) { AliTRDpropagationLayer &layer = *(fTrSec[ns]->GetLayer(layers[bLayer][1]-iTime)); Double_t dxlayer = layer.GetX() - xcl[bLayer]; Double_t zexp = tseed.GetZref(0); Double_t zcor = tseed.GetTilt() * (tseed.GetZProb() - tseed.GetZref(0)); Float_t roadz = padlength[bLayer] + 1; if (TMath::Abs(tseed.GetZProb() - zexp) > 0.5*padlength[bLayer]) { roadz = padlength[bLayer] * 0.5; } if (tseed.GetZfit(1)*tseed.GetZref(1) < 0.0) { roadz = padlength[bLayer] * 0.5; } if (TMath::Abs(tseed.GetZProb() - zexp) < 0.1*padlength[bLayer]) { zexp = tseed.GetZProb(); roadz = padlength[bLayer] * 0.5; } Double_t yexp = tseed.GetYref(0) + tseed.GetYref(1) * dxlayer - zcor; Int_t index = layer.FindNearestCluster(yexp,zexp,kRoad1y,roadz); if (index <= 0) { continue; } AliTRDcluster *clu = (AliTRDcluster *) GetCluster(index); tseed.SetIndexes(iTime,index); tseed.SetClusters(iTime,clu); // Register cluster tseed.SetX(iTime,dxlayer); // Register cluster tseed.SetY(iTime,clu->GetY()); // Register cluster tseed.SetZ(iTime,clu->GetZ()); // Register cluster } tseed.Update(); if (tseed.IsOK()) { Float_t dangle = tseed.GetYfit(1) - tseed.GetYref(1); Double_t zcor = tseed.GetTilt() * (tseed.GetZProb() - tseed.GetZref(0)); Float_t tquality = (18.0 - tseed.GetN2()) / 2.0 + TMath::Abs(dangle) / 0.1 + TMath::Abs(tseed.GetYfit(0) - (tseed.GetYref(0) - zcor)) / 0.2 + 2.0 * TMath::Abs(tseed.GetMeanz() - tseed.GetZref(0)) / padlength[jLayer]; if (tquality padlength[iLayer] * 0.5 + 1.0) { acceptablez = kFALSE; } } } if (!acceptablez) { fitterT2.FixParameter(3,zmf); fitterT2.FixParameter(4,dzmf); fitterT2.Eval(); fitterT2.ReleaseParameter(3); fitterT2.ReleaseParameter(4); rpolz0 = fitterT2.GetParameter(3); rpolz1 = fitterT2.GetParameter(4); } Double_t chi2TR = fitterT2.GetChisquare() / Float_t(npointsT); Double_t chi2TC = fitterTC.GetChisquare() / Float_t(npointsT); Double_t polz1c = fitterTC.GetParameter(2); Double_t polz0c = polz1c * xref2; Double_t aC = fitterTC.GetParameter(0); Double_t bC = fitterTC.GetParameter(1); Double_t cC = aC / TMath::Sqrt(bC * bC + 1.0); // Curvature Double_t aR = fitterT2.GetParameter(0); Double_t bR = fitterT2.GetParameter(1); Double_t dR = fitterT2.GetParameter(2); Double_t cR = 1.0 + bR*bR - dR*aR; Double_t dca = 0.0; if (cR > 0.0) { dca = -dR / (TMath::Sqrt(1.0 + bR*bR - dR*aR) + TMath::Sqrt(1.0 + bR*bR)); cR = aR / TMath::Sqrt(cR); } Double_t chi2ZT2 = 0.0; Double_t chi2ZTC = 0.0; for (Int_t iLayer = 0; iLayer < 6; iLayer++) { if (cseed[iLayer].IsOK()) { Double_t zT2 = rpolz0 + rpolz1 * (xcl[iLayer] - xref2); Double_t zTC = polz0c + polz1c * (xcl[iLayer] - xref2); chi2ZT2 += TMath::Abs(cseed[iLayer].GetMeanz() - zT2); chi2ZTC += TMath::Abs(cseed[iLayer].GetMeanz() - zTC); } } chi2ZT2 /= TMath::Max((nlayers - 3.0),1.0); chi2ZTC /= TMath::Max((nlayers - 3.0),1.0); AliTRDseed::FitRiemanTilt(cseed,kTRUE); Float_t sumdaf = 0.0; for (Int_t iLayer = 0; iLayer < 6; iLayer++) { if (cseed[iLayer].IsOK()) { sumdaf += TMath::Abs((cseed[iLayer].GetYfit(1) - cseed[iLayer].GetYref(1)) / cseed[iLayer].GetSigmaY2()); } } sumdaf /= Float_t (nlayers - 2.0); // // Likelihoods for full track // Double_t likezf = TMath::Exp(-chi2ZF * 0.14); Double_t likechi2C = TMath::Exp(-chi2TC * 0.677); Double_t likechi2TR = TMath::Exp(-chi2TR * 0.78); Double_t likeaf = TMath::Exp(-sumdaf * 3.23); seedquality2[registered] = likezf * likechi2TR * likeaf; // Still needed ???? // Bool_t isGold = kFALSE; // // if (nlayers == 6 && TMath::Log(0.000000001+seedquality2[index])<-5.) isGold =kTRUE; // gold // if (nlayers == findable && TMath::Log(0.000000001+seedquality2[index])<-4.) isGold =kTRUE; // gold // if (isGold &&nusedf<10){ // for (Int_t jLayer=0;jLayer<6;jLayer++){ // if ( seed[index][jLayer].IsOK()&&TMath::Abs(seed[index][jLayer].fYfit[1]-seed[index][jLayer].fYfit[1])<0.1) // seed[index][jLayer].UseClusters(); //sign gold // } // } Int_t index0 = 0; if (!cseed[0].IsOK()) { index0 = 1; if (!cseed[1].IsOK()) { index0 = 2; } } seedparams[registered][0] = cseed[index0].GetX0(); seedparams[registered][1] = cseed[index0].GetYref(0); seedparams[registered][2] = cseed[index0].GetZref(0); seedparams[registered][5] = cR; seedparams[registered][3] = cseed[index0].GetX0() * cR - TMath::Sin(TMath::ATan(cseed[0].GetYref(1))); seedparams[registered][4] = cseed[index0].GetZref(1) / TMath::Sqrt(1.0 + cseed[index0].GetYref(1) * cseed[index0].GetYref(1)); seedparams[registered][6] = ns; Int_t labels[12]; Int_t outlab[24]; Int_t nlab = 0; for (Int_t iLayer = 0; iLayer < 6; iLayer++) { if (!cseed[iLayer].IsOK()) { continue; } if (cseed[iLayer].GetLabels(0) >= 0) { labels[nlab] = cseed[iLayer].GetLabels(0); nlab++; } if (cseed[iLayer].GetLabels(1) >= 0) { labels[nlab] = cseed[iLayer].GetLabels(1); nlab++; } } Freq(nlab,labels,outlab,kFALSE); Int_t label = outlab[0]; Int_t frequency = outlab[1]; for (Int_t iLayer = 0; iLayer < 6; iLayer++) { cseed[iLayer].SetFreq(frequency); cseed[iLayer].SetC(cR); cseed[iLayer].SetCC(cC); cseed[iLayer].SetChi2(chi2TR); cseed[iLayer].SetChi2Z(chi2ZF); } // Debugging print if (1 || (!isFake)) { Float_t zvertex = GetZ(); TTreeSRedirector &cstream = *fDebugStreamer; if (AliTRDReconstructor::StreamLevel() > 0) { cstream << "Seeds1" << "isFake=" << isFake << "Vertex=" << zvertex << "Rieman2.=" << &rieman2 << "Rieman.=" << &rieman << "Xref=" << xref << "X0=" << xcl[0] << "X1=" << xcl[1] << "X2=" << xcl[2] << "X3=" << xcl[3] << "X4=" << xcl[4] << "X5=" << xcl[5] << "Chi2R=" << chi2R << "Chi2Z=" << chi2Z << "Chi2RF=" << chi2RF // Chi2 of trackletes on full track << "Chi2ZF=" << chi2ZF // Chi2 z on tracklets on full track << "Chi2ZT2=" << chi2ZT2 // Chi2 z on tracklets on full track - rieman tilt << "Chi2ZTC=" << chi2ZTC // Chi2 z on tracklets on full track - rieman tilt const << "Chi2TR=" << chi2TR // Chi2 without vertex constrain << "Chi2TC=" << chi2TC // Chi2 with vertex constrain << "C=" << curv // Non constrained - no tilt correction << "DR=" << dR // DR parameter - tilt correction << "DCA=" << dca // DCA - tilt correction << "CR=" << cR // Non constrained curvature - tilt correction << "CC=" << cC // Constrained curvature << "Polz0=" << polz0c << "Polz1=" << polz1c << "RPolz0=" << rpolz0 << "RPolz1=" << rpolz1 << "Ncl=" << nclusters << "Nlayers=" << nlayers << "NUsedS=" << nusedCl << "NUsed=" << nusedf << "Findable=" << findable << "Like=" << like << "LikePrim=" << likePrim << "Likechi2C=" << likechi2C << "Likechi2TR=" << likechi2TR << "Likezf=" << likezf << "LikeF=" << seedquality2[registered] << "S0.=" << &cseed[0] << "S1.=" << &cseed[1] << "S2.=" << &cseed[2] << "S3.=" << &cseed[3] << "S4.=" << &cseed[4] << "S5.=" << &cseed[5] << "SB0.=" << &seedb[0] << "SB1.=" << &seedb[1] << "SB2.=" << &seedb[2] << "SB3.=" << &seedb[3] << "SB4.=" << &seedb[4] << "SB5.=" << &seedb[5] << "Label=" << label << "Freq=" << frequency << "sLayer=" << sLayer << "\n"; } } if (registeredGetLabel(ilab); if (tindex >= 0) { labelsall[nlabelsall] = tindex; nlabelsall++; } } } } } } if (nused > 30) { continue; } if (jter == 0) { if (nlayers < 6) { continue; } if (TMath::Log(0.000000001+seedquality2[index]) < -5.0) { continue; // Gold } } if (jter == 1) { if (nlayers < findable) { continue; } if (TMath::Log(0.000000001+seedquality2[index]) < -4.0) { continue; } } if (jter == 2) { if ((nlayers == findable) || (nlayers == 6)) { continue; } if (TMath::Log(0.000000001+seedquality2[index]) < -6.0) { continue; } } if (jter == 3) { if (TMath::Log(0.000000001+seedquality2[index]) < -5.0) { continue; } } if (jter == 4) { if (TMath::Log(0.000000001+seedquality2[index]) - nused/(nlayers-3.0) < -15.0) { continue; } } signedseed[index] = kTRUE; Int_t labels[1000]; Int_t outlab[1000]; Int_t nlab = 0; for (Int_t iLayer = 0; iLayer < 6; iLayer++) { if (seed[index][iLayer].IsOK()) { if (seed[index][iLayer].GetLabels(0) >= 0) { labels[nlab] = seed[index][iLayer].GetLabels(0); nlab++; } if (seed[index][iLayer].GetLabels(1) >= 0) { labels[nlab] = seed[index][iLayer].GetLabels(1); nlab++; } } } Freq(nlab,labels,outlab,kFALSE); Int_t label = outlab[0]; Int_t frequency = outlab[1]; Freq(nlabelsall,labelsall,outlab,kFALSE); Int_t label1 = outlab[0]; Int_t label2 = outlab[2]; Float_t fakeratio = (naccepted - outlab[1]) / Float_t(naccepted); Float_t ratio = Float_t(nused) / Float_t(ncl); if (ratio < 0.25) { for (Int_t jLayer = 0; jLayer < 6; jLayer++) { if ((seed[index][jLayer].IsOK()) && (TMath::Abs(seed[index][jLayer].GetYfit(1) - seed[index][jLayer].GetYfit(1)) < 0.2)) { seed[index][jLayer].UseClusters(); // Sign gold } } } 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. TTreeSRedirector &cstream = *fDebugStreamer; // // Register seed // AliTRDtrack *track = RegisterSeed(seed[index],seedparams[index]); AliTRDtrack dummy; if (!track) { track = &dummy; } else { AliESDtrack esdtrack; esdtrack.UpdateTrackParams(track,AliESDtrack::kTRDout); esdtrack.SetLabel(label); esd->AddTrack(&esdtrack); if (AliTRDReconstructor::StreamLevel() > 0) { cstream << "Tracks" << "EventNrInFile=" << eventNrInFile << "ESD.=" << &esdtrack << "trd.=" << track << "trdback.=" << track << "\n"; } } if (AliTRDReconstructor::StreamLevel() > 0) { cstream << "Seeds2" << "Iter=" << jter << "Track.=" << track << "Like=" << seedquality[index] << "LikeF=" << seedquality2[index] << "S0.=" << &seed[index][0] << "S1.=" << &seed[index][1] << "S2.=" << &seed[index][2] << "S3.=" << &seed[index][3] << "S4.=" << &seed[index][4] << "S5.=" << &seed[index][5] << "Label=" << label << "Label1=" << label1 << "Label2=" << label2 << "FakeRatio=" << fakeratio << "Freq=" << frequency << "Ncl=" << ncl << "Nlayers=" << nlayers << "Findable=" << findable << "NUsed=" << nused << "sLayer=" << sLayer << "EventNrInFile=" << eventNrInFile << "\n"; } } // Loop: iseed } // Loop: jter } // End of loop over sectors delete [] pseed; return 0; } //_____________________________________________________________________________ Int_t AliTRDtracker::ReadClusters(TObjArray *array, TTree *clusterTree) const { // // Reads AliTRDclusters from the file. // The names of the cluster tree and branches // should match the ones used in AliTRDclusterizer::WriteClusters() // Int_t nsize = Int_t(clusterTree->GetTotBytes() / (sizeof(AliTRDcluster))); TObjArray *clusterArray = new TObjArray(nsize+1000); TBranch *branch = clusterTree->GetBranch("TRDcluster"); if (!branch) { AliError("Can't get the branch !"); return 1; } branch->SetAddress(&clusterArray); // Loop through all entries in the tree Int_t nEntries = (Int_t) clusterTree->GetEntries(); Int_t nbytes = 0; AliTRDcluster *c = 0x0; for (Int_t iEntry = 0; iEntry < nEntries; iEntry++) { // Import the tree nbytes += clusterTree->GetEvent(iEntry); // Get the number of points in the detector Int_t nCluster = clusterArray->GetEntriesFast(); // Loop through all TRD digits for (Int_t iCluster = 0; iCluster < nCluster; iCluster++) { if(!(c = (AliTRDcluster *) clusterArray->UncheckedAt(iCluster))) continue; array->AddLast(c); //printf("Add cluster 0x%x.\n", c); clusterArray->RemoveAt(iCluster); } } delete clusterArray; return 0; } //_____________________________________________________________________________ Bool_t AliTRDtracker::GetTrackPoint(Int_t index, AliTrackPoint &p) const { // // Get track space point with index i // Origin: C.Cheshkov // AliTRDcluster *cl = (AliTRDcluster *) fClusters->UncheckedAt(index); Int_t idet = cl->GetDetector(); Int_t isector = fGeom->GetSector(idet); Int_t ichamber = fGeom->GetChamber(idet); Int_t iplan = fGeom->GetPlane(idet); Double_t local[3]; local[0] = GetX(isector,iplan,cl->GetLocalTimeBin()); local[1] = cl->GetY(); local[2] = cl->GetZ(); Double_t global[3]; fGeom->RotateBack(idet,local,global); p.SetXYZ(global[0],global[1],global[2]); AliGeomManager::ELayerID iLayer = AliGeomManager::kTRD1; switch (iplan) { case 0: iLayer = AliGeomManager::kTRD1; break; case 1: iLayer = AliGeomManager::kTRD2; break; case 2: iLayer = AliGeomManager::kTRD3; break; case 3: iLayer = AliGeomManager::kTRD4; break; case 4: iLayer = AliGeomManager::kTRD5; break; case 5: iLayer = AliGeomManager::kTRD6; break; }; Int_t modId = isector * fGeom->Ncham() + ichamber; UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,modId); p.SetVolumeID(volid); return kTRUE; } //_____________________________________________________________________________ void AliTRDtracker::CookLabel(AliKalmanTrack *pt, Float_t wrong) const { // // This cooks a label. Mmmmh, smells good... // Int_t label = 123456789; Int_t index; Int_t i; Int_t j; Int_t ncl = pt->GetNumberOfClusters(); const Int_t kRange = fTrSec[0]->GetOuterTimeBin() + 1; Bool_t labelAdded; Int_t **s = new Int_t* [kRange]; for (i = 0; i < kRange; i++) { s[i] = new Int_t[2]; } for (i = 0; i < kRange; i++) { s[i][0] = -1; s[i][1] = 0; } Int_t t0; Int_t t1; Int_t t2; for (i = 0; i < ncl; i++) { index = pt->GetClusterIndex(i); AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index); t0=c->GetLabel(0); t1=c->GetLabel(1); t2=c->GetLabel(2); } for (i = 0; i < ncl; i++) { index = pt->GetClusterIndex(i); AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index); for (Int_t k = 0; k < 3; k++) { label = c->GetLabel(k); labelAdded = kFALSE; j = 0; if (label >= 0) { while ((!labelAdded) && (j < kRange)) { if ((s[j][0] == label) || (s[j][1] == 0)) { s[j][0] = label; s[j][1] = s[j][1] + 1; labelAdded = kTRUE; } j++; } } } } Int_t max = 0; label = -123456789; for (i = 0; i < kRange; i++) { if (s[i][1] > max) { max = s[i][1]; label = s[i][0]; } } for (i = 0; i < kRange; i++) { delete []s[i]; } delete []s; if ((1.0 - Float_t(max)/ncl) > wrong) { label = -label; } pt->SetLabel(label); } //_____________________________________________________________________________ void AliTRDtracker::UseClusters(const AliKalmanTrack *t, Int_t from) const { // // Use clusters, but don't abuse them! // const Float_t kmaxchi2 = 18; const Float_t kmincl = 10; AliTRDtrack *track = (AliTRDtrack *) t; Int_t ncl = t->GetNumberOfClusters(); for (Int_t i = from; i < ncl; i++) { Int_t index = t->GetClusterIndex(i); AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index); Int_t iplane = fGeom->GetPlane(c->GetDetector()); if (track->GetTracklets(iplane).GetChi2() > kmaxchi2) { continue; } if (track->GetTracklets(iplane).GetN() < kmincl) { continue; } if (!(c->IsUsed())) { c->Use(); } } } //_____________________________________________________________________________ Double_t AliTRDtracker::ExpectedSigmaY2(Double_t , Double_t , Double_t ) const { // // Parametrised "expected" error of the cluster reconstruction in Y // Double_t s = 0.08 * 0.08; return s; } //_____________________________________________________________________________ Double_t AliTRDtracker::ExpectedSigmaZ2(Double_t , Double_t ) const { // // Parametrised "expected" error of the cluster reconstruction in Z // Double_t s = 9.0 * 9.0 / 12.0; return s; } //_____________________________________________________________________________ Double_t AliTRDtracker::GetX(Int_t sector, Int_t plane, Int_t localTB) const { // // Returns radial position which corresponds to time bin // in tracking sector and plane // Int_t index = fTrSec[sector]->CookTimeBinIndex(plane, localTB); Int_t pl = fTrSec[sector]->GetLayerNumber(index); return fTrSec[sector]->GetLayer(pl)->GetX(); } //_____________________________________________________________________________ AliTRDtracker::AliTRDtrackingSector ::AliTRDtrackingSector(AliTRDgeometry *geo, Int_t gs) :fN(0) ,fGeom(geo) ,fGeomSector(gs) { // // AliTRDtrackingSector Constructor // AliTRDpadPlane *padPlane = 0; AliTRDpropagationLayer *ppl = 0; // Get holes description from geometry Bool_t holes[AliTRDgeometry::kNcham]; for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) { holes[icham] = fGeom->IsHole(0,icham,gs); } for (UInt_t i = 0; i < kMaxTimeBinIndex; i++) { fTimeBinIndex[i] = -1; } Double_t x; Double_t dx; Double_t rho; Double_t radLength; // Add layers for each of the planes Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region //Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region const Int_t kNchambers = AliTRDgeometry::Ncham(); Int_t tbIndex; Double_t ymax = 0; Double_t ymaxsensitive = 0; Double_t *zc = new Double_t[kNchambers]; Double_t *zmax = new Double_t[kNchambers]; Double_t *zmaxsensitive = new Double_t[kNchambers]; for (Int_t plane = 0; plane < AliTRDgeometry::Nplan(); plane++) { ymax = fGeom->GetChamberWidth(plane) / 2.0; padPlane = fGeom->GetPadPlane(plane,0); ymaxsensitive = (padPlane->GetColSize(1) * padPlane->GetNcols() - 4.0) / 2.0; for (Int_t ch = 0; ch < kNchambers; ch++) { zmax[ch] = fGeom->GetChamberLength(plane,ch) / 2.0; Float_t pad = padPlane->GetRowSize(1); Float_t row0 = fGeom->GetRow0(plane,ch,0); Int_t nPads = fGeom->GetRowMax(plane,ch,0); zmaxsensitive[ch] = Float_t(nPads) * pad / 2.0; zc[ch] = -(pad * nPads) / 2.0 + row0; } AliTRDcalibDB *fCalibration = AliTRDcalibDB::Instance(); dx = fCalibration->GetVdrift(0,0,0) / AliTRDCommonParam::Instance()->GetSamplingFrequency(); rho = 0.00295 * 0.85; //???? radLength = 11.0; Double_t x0 = (Double_t) AliTRDgeometry::GetTime0(plane); //Double_t xbottom = x0 - dxDrift; //Double_t xtop = x0 + dxAmp; //temporary !! (A.Bercuci) Int_t T0 = (Int_t)fCalibration->GetT0Average(AliTRDgeometry::GetDetector(plane, 2, gs)); Int_t nTimeBins = AliTRDcalibDB::Instance()->GetNumberOfTimeBins(); for (Int_t iTime = 0; iTime < nTimeBins; iTime++) { Double_t xlayer = iTime * dx - dxAmp; //if (xlayer<0) xlayer = dxAmp / 2.0; x = x0 - xlayer; tbIndex = CookTimeBinIndex(plane,iTime); ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex,plane); ppl->SetYmax(ymax,ymaxsensitive); ppl->SetZ(zc,zmax,zmaxsensitive); ppl->SetHoles(holes); if(iTime == T0) ppl->SetT0(); InsertLayer(ppl); } } MapTimeBinLayers(); delete [] zc; delete [] zmax; delete [] zmaxsensitive; } //_____________________________________________________________________________ AliTRDtracker::AliTRDtrackingSector ::AliTRDtrackingSector(const AliTRDtrackingSector &/*t*/) :fN(0) ,fGeom(0) ,fGeomSector(0) { // // Copy constructor // } //_____________________________________________________________________________ AliTRDtracker::AliTRDtrackingSector ::~AliTRDtrackingSector() { // // Destructor // for (Int_t i = 0; i < fN; i++) { delete fLayers[i]; } } //_____________________________________________________________________________ Int_t AliTRDtracker::AliTRDtrackingSector ::CookTimeBinIndex(Int_t plane, Int_t localTB) const { // // Depending on the digitization parameters calculates global // (i.e. for a whole TRD stack of 6 planes) time bin index for // timebin in plane // Int_t tbPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins(); Int_t gtb = (plane+1) * tbPerPlane - localTB - 1; if (localTB < 0) { return -1; } if (gtb < 0) { return -1; } return gtb; } //_____________________________________________________________________________ void AliTRDtracker::AliTRDtrackingSector ::MapTimeBinLayers() { // // For all sensitive time bins sets corresponding layer index // in the array fTimeBins // Int_t index; for (Int_t i = 0; i < fN; i++) { index = fLayers[i]->GetTimeBinIndex(); if (index < 0) { continue; } if (index >= (Int_t) kMaxTimeBinIndex) { //AliWarning(Form("Index %d exceeds allowed maximum of %d!\n" // ,index,kMaxTimeBinIndex-1)); continue; } fTimeBinIndex[index] = i; } } //_____________________________________________________________________________ Int_t AliTRDtracker::AliTRDtrackingSector ::GetLayerNumber(Double_t x) const { // // Returns the number of time bin which in radial position is closest to // if (x >= fLayers[fN-1]->GetX()) { return fN - 1; } if (x <= fLayers[ 0]->GetX()) { return 0; } Int_t b = 0; Int_t e = fN - 1; Int_t m = (b + e) / 2; for ( ; b < e; m = (b + e) / 2) { if (x > fLayers[m]->GetX()) { b = m + 1; } else { e = m; } } if (TMath::Abs(x - fLayers[m]->GetX()) > TMath::Abs(x - fLayers[m+1]->GetX())) { return m + 1; } else { return m; } } //_____________________________________________________________________________ Int_t AliTRDtracker::AliTRDtrackingSector ::GetInnerTimeBin() const { // // Returns number of the innermost SENSITIVE propagation layer // return GetLayerNumber(0); } //_____________________________________________________________________________ Int_t AliTRDtracker::AliTRDtrackingSector ::GetOuterTimeBin() const { // // Returns number of the outermost SENSITIVE time bin // return GetLayerNumber(GetNumberOfTimeBins() - 1); } //_____________________________________________________________________________ Int_t AliTRDtracker::AliTRDtrackingSector ::GetNumberOfTimeBins() const { // // Returns number of SENSITIVE time bins // Int_t tb; Int_t layer; for (tb = kMaxTimeBinIndex - 1; tb >= 0; tb--) { layer = GetLayerNumber(tb); if (layer >= 0) { break; } } return tb + 1; } //_____________________________________________________________________________ void AliTRDtracker::AliTRDtrackingSector ::InsertLayer(AliTRDpropagationLayer *pl) { // // Insert layer in fLayers array. // Layers are sorted according to X coordinate. // if (fN == ((Int_t) kMaxLayersPerSector)) { //AliWarning("Too many layers !\n"); return; } if (fN == 0) { fLayers[fN++] = pl; return; } Int_t i = Find(pl->GetX()); memmove(fLayers+i+1,fLayers+i,(fN-i)*sizeof(AliTRDpropagationLayer*)); fLayers[i] = pl; fN++; } //_____________________________________________________________________________ Int_t AliTRDtracker::AliTRDtrackingSector ::Find(Double_t x) const { // // Returns index of the propagation layer nearest to X // if (x <= fLayers[0]->GetX()) { return 0; } if (x > fLayers[fN-1]->GetX()) { return fN; } Int_t b = 0; Int_t e = fN-1; Int_t m = (b + e) / 2; for (; b < e; m = (b + e) / 2) { if (x > fLayers[m]->GetX()) { b = m + 1; } else { e = m; } } return m; } //_____________________________________________________________________________ Double_t AliTRDtracker::GetTiltFactor(const AliTRDcluster *c) { // // Returns correction factor for tilted pads geometry // Int_t det = c->GetDetector(); Int_t plane = fGeom->GetPlane(det); AliTRDpadPlane *padPlane = fGeom->GetPadPlane(plane,0); Double_t h01 = TMath::Tan(-TMath::Pi() / 180.0 * padPlane->GetTiltingAngle()); if (fNoTilt) { h01 = 0; } return h01; } //_____________________________________________________________________________ Int_t AliTRDtracker::FindClusters(Int_t sector, Int_t t0, Int_t t1 , AliTRDtrack *track , Int_t *clusters , AliTRDtracklet &tracklet) { // // Try to find the nearest clusters to the track in the time bins // between and . // Also the corresponding tracklet is calculated // Correction coeficients - depend on TRD parameters - to be changed accordingly // const Int_t kN1 = 100; const Int_t kN2 = 10; Double_t x[kN1]; Double_t yt[kN1]; Double_t zt[kN1]; Float_t zmean[kN1]; Float_t nmean[kN1]; Double_t dz[kN2][kN1]; Double_t dy[kN2][kN1]; Int_t indexes[kN2][kN1]; // Indexes of the clusters in the road Int_t best[kN2][kN1]; // Index of best matching cluster AliTRDcluster *cl[kN2][kN1]; // Pointers to the clusters in the road Double_t xmean = 0.0; // Reference x Int_t clfound = 0; // Initialize the arrays for (Int_t it = 0; it < kN1; it++) { x[it] = 0.0; yt[it] = 0.0; zt[it] = 0.0; clusters[it] = -2; zmean[it] = 0.0; nmean[it] = 0.0; for (Int_t ih = 0; ih < kN2; ih++) { indexes[ih][it] = -2; cl[ih][it] = 0; dz[ih][it] = -100.0; dy[ih][it] = -100.0; best[ih][it] = 0; } } Double_t x0 = track->GetX(); Double_t sigmaz = TMath::Sqrt(TMath::Abs(track->GetSigmaZ2())); Int_t nall = 0; Int_t nfound = 0; Double_t h01 = 0.0; Int_t plane = -1; Int_t detector = -1; Float_t padlength = 0.0; AliTRDtrack track2(* track); Float_t snpy = track->GetSnp(); Float_t tany = TMath::Sqrt(snpy*snpy / (1.0 - snpy*snpy)); if (snpy < 0.0) { tany *= -1.0; } Double_t sy2 = ExpectedSigmaY2(x0,track->GetTgl(),track->GetSignedPt()); Double_t sz2 = ExpectedSigmaZ2(x0,track->GetTgl()); Double_t road = 15.0 * TMath::Sqrt(track->GetSigmaY2() + sy2); if (road > 6.0) { road = 6.0; } for (Int_t it = 0; it < t1-t0; it++) { Double_t maxChi2[2] = { fgkMaxChi2, fgkMaxChi2 }; AliTRDpropagationLayer &timeBin = *(fTrSec[sector]->GetLayer(it+t0)); if (timeBin == 0) { continue; // No indexes1 } Int_t maxn = timeBin; x[it] = timeBin.GetX(); track2.PropagateTo(x[it]); yt[it] = track2.GetY(); zt[it] = track2.GetZ(); Double_t y = yt[it]; Double_t z = zt[it]; Double_t chi2 = 1000000.0; nall++; // // Find 2 nearest cluster at given time bin // Int_t checkPoint[4] = { 0, 0, 0, 0 }; Double_t minY = 123456789.0; Double_t minD[2] = { 1.0, 1.0 }; for (Int_t i = timeBin.Find(y - road); i < maxn; i++) { AliTRDcluster *c = (AliTRDcluster *) (timeBin[i]); h01 = GetTiltFactor(c); if (plane < 0) { Int_t det = c->GetDetector(); plane = fGeom->GetPlane(det); padlength = TMath::Sqrt(c->GetSigmaZ2() * 12.0); } if (c->GetY() > (y + road)) { break; } fHDeltaX->Fill(c->GetX() - x[it]); if (TMath::Abs(c->GetY()-y) < TMath::Abs(minY)) { minY = c->GetY() - y; minD[0] = c->GetY() - y; minD[1] = c->GetZ() - z; } checkPoint[0]++; fHMinZ->Fill(c->GetZ() - z); if ((c->GetZ() - z) * (c->GetZ() - z) > 2 * (12.0 * sz2)) { continue; } checkPoint[1]++; Double_t dist = TMath::Abs(c->GetZ() - z); if (dist > (0.5 * padlength + 6.0 * sigmaz)) { continue; // 6 sigma boundary cut } checkPoint[2]++; // Sigma boundary cost function Double_t cost = 0.0; if (dist> (0.5 * padlength - sigmaz)){ cost = (dist - 0.5*padlength) / (2.0 * sigmaz); if (cost > -1) { cost = (cost + 1.0) * (cost + 1.0); } else { cost = 0.0; } } chi2 = track2.GetPredictedChi2(c,h01) + cost; clfound++; if (chi2 > maxChi2[1]) { continue; } checkPoint[3]++; // Store the clusters in the road detector = c->GetDetector(); for (Int_t ih = 2; ih < 9; ih++) { if (cl[ih][it] == 0) { cl[ih][it] = c; indexes[ih][it] = timeBin.GetIndex(i); // Index - 9 - reserved for outliers break; } } if (chi2 < maxChi2[0]) { maxChi2[1] = maxChi2[0]; maxChi2[0] = chi2; indexes[1][it] = indexes[0][it]; cl[1][it] = cl[0][it]; indexes[0][it] = timeBin.GetIndex(i); cl[0][it] = c; continue; } maxChi2[1] = chi2; cl[1][it] = c; indexes[1][it] = timeBin.GetIndex(i); } for(int iCheckPoint = 0; iCheckPoint<4; iCheckPoint++) { fHFindCl[iCheckPoint]->Fill(checkPoint[iCheckPoint]); } if (checkPoint[3]) { if (track->GetSignedPt() > 0) { fHMinYPos->Fill(minY); } else { fHMinYNeg->Fill(minY); } fHMinD->Fill(minD[0],minD[1]); } if (cl[0][it]) { nfound++; xmean += x[it]; } } if (nfound < 4) { return 0; } xmean /= Float_t(nfound); // Middle x track2.PropagateTo(xmean); // Propagate track to the center // // Choose one of the variants // Float_t sumz = 0.0; Float_t sum = 0.0; Double_t sumdy = 0.0; Double_t sumdy2 = 0.0; Double_t sumx = 0.0; Double_t sumxy = 0.0; Double_t sumx2 = 0.0; Double_t mpads = 0.0; Int_t changes[kN2]; Int_t ngood[kN2]; Int_t nbad[kN2]; Double_t meanz[kN2]; Double_t moffset[kN2]; // Mean offset Double_t mean[kN2]; // Mean value Double_t angle[kN2]; // Angle Double_t smoffset[kN2]; // Sigma of mean offset Double_t smean[kN2]; // Sigma of mean value Double_t sangle[kN2]; // Sigma of angle Double_t smeanangle[kN2]; // Correlation Double_t sigmas[kN2]; Double_t tchi2s[kN2]; // Chi2s for tracklet for (Int_t it = 0; it < kN2; it++) { ngood[it] = 0; nbad[it] = 0; meanz[it] = 0.0; moffset[it] = 0.0; // Mean offset mean[it] = 0.0; // Mean value angle[it] = 0.0; // Angle smoffset[it] = 1.0e5; // Sigma of mean offset smean[it] = 1.0e5; // Sigma of mean value sangle[it] = 1.0e5; // Sigma of angle smeanangle[it] = 0.0; // Correlation sigmas[it] = 1.0e5; tchi2s[it] = 1.0e5; // Chi2s for tracklet } // // Calculate zmean // for (Int_t it = 0; it < t1 - t0; it++) { if (!cl[0][it]) { continue; } for (Int_t dt = -3; dt <= 3; dt++) { if (it+dt < 0) { continue; } if (it+dt > t1-t0) { continue; } if (!cl[0][it+dt]) { continue; } zmean[it] += cl[0][it+dt]->GetZ(); nmean[it] += 1.0; } zmean[it] /= nmean[it]; } for (Int_t it = 0; it < t1 - t0; it++) { best[0][it] = 0; for (Int_t ih = 0; ih < 10; ih++) { dz[ih][it] = -100.0; dy[ih][it] = -100.0; if (!cl[ih][it]) { continue; } Double_t xcluster = cl[ih][it]->GetX(); Double_t ytrack; Double_t ztrack; track2.GetProlongation(xcluster,ytrack,ztrack ); dz[ih][it] = cl[ih][it]->GetZ()- ztrack; // Calculate distance from track in z dy[ih][it] = cl[ih][it]->GetY() + dz[ih][it]*h01 - ytrack; // and in y } // Minimize changes if (!cl[0][it]) { continue; } if ((TMath::Abs(cl[0][it]->GetZ()-zmean[it]) > padlength * 0.8) && (cl[1][it])) { if (TMath::Abs(cl[1][it]->GetZ()-zmean[it]) < padlength * 0.5) { best[0][it] = 1; } } } // // Iterative choice of "best path" // Int_t label = TMath::Abs(track->GetLabel()); Int_t bestiter = 0; for (Int_t iter = 0; iter < 9; iter++) { changes[iter] = 0; sumz = 0; sum = 0; sumdy = 0; sumdy2 = 0; sumx = 0; sumx2 = 0; sumxy = 0; mpads = 0; ngood[iter] = 0; nbad[iter] = 0; // Linear fit for (Int_t it = 0; it < t1 - t0; it++) { if (!cl[best[iter][it]][it]) { continue; } // Calculates pad-row changes Double_t zbefore = cl[best[iter][it]][it]->GetZ(); Double_t zafter = cl[best[iter][it]][it]->GetZ(); for (Int_t itd = it - 1; itd >= 0; itd--) { if (cl[best[iter][itd]][itd]) { zbefore = cl[best[iter][itd]][itd]->GetZ(); break; } } for (Int_t itd = it + 1; itd < t1 - t0; itd++) { if (cl[best[iter][itd]][itd]) { zafter = cl[best[iter][itd]][itd]->GetZ(); break; } } if ((TMath::Abs(cl[best[iter][it]][it]->GetZ()-zbefore) > 0.1) && (TMath::Abs(cl[best[iter][it]][it]->GetZ()- zafter) > 0.1)) { changes[iter]++; } // Distance to reference x Double_t dx = x[it]-xmean; sumz += cl[best[iter][it]][it]->GetZ(); sum++; sumdy += dy[best[iter][it]][it]; sumdy2 += dy[best[iter][it]][it]*dy[best[iter][it]][it]; sumx += dx; sumx2 += dx*dx; sumxy += dx*dy[best[iter][it]][it]; mpads += cl[best[iter][it]][it]->GetNPads(); if ((cl[best[iter][it]][it]->GetLabel(0) == label) || (cl[best[iter][it]][it]->GetLabel(1) == label) || (cl[best[iter][it]][it]->GetLabel(2) == label)) { ngood[iter]++; } else { nbad[iter]++; } } // // Calculates line parameters // Double_t det = sum*sumx2 - sumx*sumx; angle[iter] = (sum*sumxy - sumx*sumdy) / det; mean[iter] = (sumx2*sumdy - sumx*sumxy) / det; meanz[iter] = sumz / sum; moffset[iter] = sumdy / sum; mpads /= sum; // Mean number of pads Double_t sigma2 = 0.0; // Normalized residuals - for line fit Double_t sigma1 = 0.0; // Normalized residuals - constant fit for (Int_t it = 0; it < t1 - t0; it++) { if (!cl[best[iter][it]][it]) { continue; } Double_t dx = x[it] - xmean; Double_t ytr = mean[iter] + angle[iter] * dx; sigma2 += (dy[best[iter][it]][it] - ytr) * (dy[best[iter][it]][it] - ytr); sigma1 += (dy[best[iter][it]][it] - moffset[iter]) * (dy[best[iter][it]][it] - moffset[iter]); sum++; } sigma2 /= (sum - 2); // Normalized residuals sigma1 /= (sum - 1); // Normalized residuals smean[iter] = sigma2 * (sumx2 / det); // Estimated error2 of mean sangle[iter] = sigma2 * ( sum / det); // Estimated error2 of angle smeanangle[iter] = sigma2 * (-sumx / det); // Correlation sigmas[iter] = TMath::Sqrt(sigma1); smoffset[iter] = (sigma1 / sum) + 0.01*0.01; // Sigma of mean offset + unisochronity sigma // // Iterative choice of "better path" // for (Int_t it = 0; it < t1 - t0; it++) { if (!cl[best[iter][it]][it]) { continue; } // Add unisochronity + angular effect contribution Double_t sigmatr2 = smoffset[iter] + 0.5*tany*tany; Double_t sweight = 1.0/sigmatr2 + 1.0/track->GetSigmaY2(); Double_t weighty = (moffset[iter] / sigmatr2) / sweight; // Weighted mean Double_t sigmacl = TMath::Sqrt(sigma1*sigma1 + track->GetSigmaY2()); Double_t mindist = 100000.0; Int_t ihbest = 0; for (Int_t ih = 0; ih < kN2; ih++) { if (!cl[ih][it]) { break; } Double_t dist2 = (dy[ih][it] - weighty) / sigmacl; dist2 *= dist2; // Chi2 distance if (dist2 < mindist) { mindist = dist2; ihbest = ih; } } best[iter+1][it] = ihbest; } // // Update best hypothesy if better chi2 according tracklet position and angle // sy2 = smean[iter] + track->GetSigmaY2(); Double_t sa2 = sangle[iter] + track->GetSigmaSnp2(); // track->fCee; Double_t say = track->GetSigmaSnpY(); // track->fCey; Double_t detchi = sy2*sa2 - say*say; Double_t invers[3] = {sa2/detchi,sy2/detchi,-say/detchi}; // Inverse value of covariance matrix Double_t chi20 = mean[bestiter] * mean[bestiter] * invers[0] + angle[bestiter] * angle[bestiter] * invers[1] + 2.0 * mean[bestiter] * angle[bestiter] * invers[2]; Double_t chi21 = mean[iter] * mean[iter] * invers[0] + angle[iter] * angle[iter] * invers[1] + 2.0 * mean[iter] * angle[iter] * invers[2]; tchi2s[iter] = chi21; if ((changes[iter] <= changes[bestiter]) && (chi21 < chi20)) { bestiter = iter; } } // // Set clusters // Double_t sigma2 = sigmas[0]; // Choose as sigma from 0 iteration Short_t maxpos = -1; Float_t maxcharge = 0.0; Short_t maxpos4 = -1; Float_t maxcharge4 = 0.0; Short_t maxpos5 = -1; Float_t maxcharge5 = 0.0; Double_t exB = AliTRDcalibDB::Instance()->GetOmegaTau(AliTRDcalibDB::Instance()->GetVdrift(0,0,0) ,-AliTracker::GetBz()*0.1); Double_t expectederr = sigma2*sigma2 + 0.01*0.01; if (mpads > 3.5) { expectederr += (mpads - 3.5) * 0.04; } if (changes[bestiter] > 1) { expectederr += changes[bestiter] * 0.01; } expectederr += (0.03 * (tany-exB)*(tany-exB)) * 15.0; for (Int_t it = 0; it < t1 - t0; it++) { if (!cl[best[bestiter][it]][it]) { continue; } // Set cluster error cl[best[bestiter][it]][it]->SetSigmaY2(expectederr); if (!cl[best[bestiter][it]][it]->IsUsed()) { cl[best[bestiter][it]][it]->SetY(cl[best[bestiter][it]][it]->GetY()); } // Time bins with maximal charge if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge) { maxcharge = TMath::Abs(cl[best[bestiter][it]][it]->GetQ()); maxpos = cl[best[bestiter][it]][it]->GetLocalTimeBin(); } if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge4) { if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 4) { maxcharge4 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ()); maxpos4 = cl[best[bestiter][it]][it]->GetLocalTimeBin(); } } if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge5) { if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 5) { maxcharge5 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ()); maxpos5 = cl[best[bestiter][it]][it]->GetLocalTimeBin(); } } // Time bins with maximal charge if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge) { maxcharge = TMath::Abs(cl[best[bestiter][it]][it]->GetQ()); maxpos = cl[best[bestiter][it]][it]->GetLocalTimeBin(); } if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge4) { if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 4) { maxcharge4 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ()); maxpos4 = cl[best[bestiter][it]][it]->GetLocalTimeBin(); } } if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge5) { if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 5) { maxcharge5 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ()); maxpos5 = cl[best[bestiter][it]][it]->GetLocalTimeBin(); } } clusters[it+t0] = indexes[best[bestiter][it]][it]; } // Set tracklet parameters Double_t trackleterr2 = smoffset[bestiter] + 0.01*0.01; if (mpads > 3.5) { trackleterr2 += (mpads - 3.5) * 0.04; } trackleterr2 += changes[bestiter] * 0.01; trackleterr2 *= TMath::Max(14.0 - nfound,1.0); trackleterr2 += 0.2 * (tany-exB)*(tany-exB); tracklet.Set(xmean ,track2.GetY() + moffset[bestiter] ,meanz[bestiter] ,track2.GetAlpha() ,trackleterr2); tracklet.SetTilt(h01); tracklet.SetP0(mean[bestiter]); tracklet.SetP1(angle[bestiter]); tracklet.SetN(nfound); tracklet.SetNCross(changes[bestiter]); tracklet.SetPlane(plane); tracklet.SetSigma2(expectederr); tracklet.SetChi2(tchi2s[bestiter]); tracklet.SetMaxPos(maxpos,maxpos4,maxpos5); track->SetTracklets(plane,tracklet); track->SetNWrong(track->GetNWrong() + nbad[0]); // // Debuging part // TClonesArray array0("AliTRDcluster"); TClonesArray array1("AliTRDcluster"); array0.ExpandCreateFast(t1 - t0 + 1); array1.ExpandCreateFast(t1 - t0 + 1); TTreeSRedirector &cstream = *fDebugStreamer; AliTRDcluster dummy; Double_t dy0[100]; Double_t dyb[100]; for (Int_t it = 0; it < t1 - t0; it++) { dy0[it] = dy[0][it]; dyb[it] = dy[best[bestiter][it]][it]; if (cl[0][it]) { new(array0[it]) AliTRDcluster(*cl[0][it]); } else { new(array0[it]) AliTRDcluster(dummy); } if(cl[best[bestiter][it]][it]) { new(array1[it]) AliTRDcluster(*cl[best[bestiter][it]][it]); } else{ new(array1[it]) AliTRDcluster(dummy); } } TGraph graph0(t1-t0,x,dy0); TGraph graph1(t1-t0,x,dyb); TGraph graphy(t1-t0,x,yt); TGraph graphz(t1-t0,x,zt); if (AliTRDReconstructor::StreamLevel() > 0) { cstream << "tracklet" << "track.=" << track // Track parameters << "tany=" << tany // Tangent of the local track angle << "xmean=" << xmean // Xmean - reference x of tracklet << "tilt=" << h01 // Tilt angle << "nall=" << nall // Number of foundable clusters << "nfound=" << nfound // Number of found clusters << "clfound=" << clfound // Total number of found clusters in road << "mpads=" << mpads // Mean number of pads per cluster << "plane=" << plane // Plane number << "detector=" << detector // Detector number << "road=" << road // The width of the used road << "graph0.=" << &graph0 // x - y = dy for closest cluster << "graph1.=" << &graph1 // x - y = dy for second closest cluster << "graphy.=" << &graphy // y position of the track << "graphz.=" << &graphz // z position of the track //<< "fCl.=" << &array0 // closest cluster //<< "fCl2.=" << &array1 // second closest cluster << "maxpos=" << maxpos // Maximal charge postion << "maxcharge=" << maxcharge // Maximal charge << "maxpos4=" << maxpos4 // Maximal charge postion - after bin 4 << "maxcharge4=" << maxcharge4 // Maximal charge - after bin 4 << "maxpos5=" << maxpos5 // Maximal charge postion - after bin 5 << "maxcharge5=" << maxcharge5 // Maximal charge - after bin 5 << "bestiter=" << bestiter // Best iteration number << "tracklet.=" << &tracklet // Corrspond to the best iteration << "tchi20=" << tchi2s[0] // Chi2 of cluster in the 0 iteration << "tchi2b=" << tchi2s[bestiter] // Chi2 of cluster in the best iteration << "sigmas0=" << sigmas[0] // Residuals sigma << "sigmasb=" << sigmas[bestiter] // Residulas sigma << "ngood0=" << ngood[0] // Number of good clusters in 0 iteration << "nbad0=" << nbad[0] // Number of bad clusters in 0 iteration << "ngoodb=" << ngood[bestiter] // in best iteration << "nbadb=" << nbad[bestiter] // in best iteration << "changes0=" << changes[0] // Changes of pardrows in iteration number 0 << "changesb=" << changes[bestiter] // Changes of pardrows in best iteration << "moffset0=" << moffset[0] // Offset fixing angle in iter=0 << "smoffset0=" << smoffset[0] // Sigma of offset fixing angle in iter=0 << "moffsetb=" << moffset[bestiter] // Offset fixing angle in iter=best << "smoffsetb=" << smoffset[bestiter] // Sigma of offset fixing angle in iter=best << "mean0=" << mean[0] // Mean dy in iter=0; << "smean0=" << smean[0] // Sigma of mean dy in iter=0 << "meanb=" << mean[bestiter] // Mean dy in iter=best << "smeanb=" << smean[bestiter] // Sigma of mean dy in iter=best << "angle0=" << angle[0] // Angle deviation in the iteration number 0 << "sangle0=" << sangle[0] // Sigma of angular deviation in iteration number 0 << "angleb=" << angle[bestiter] // Angle deviation in the best iteration << "sangleb=" << sangle[bestiter] // Sigma of angle deviation in the best iteration << "expectederr=" << expectederr // Expected error of cluster position << "\n"; } return nfound; } //_____________________________________________________________________________ Int_t AliTRDtracker::Freq(Int_t n, const Int_t *inlist , Int_t *outlist, Bool_t down) { // // Sort eleements according occurancy // The size of output array has is 2*n // if (n <= 0) { return 0; } Int_t *sindexS = new Int_t[n]; // Temporary array for sorting Int_t *sindexF = new Int_t[2*n]; for (Int_t i = 0; i < n; i++) { sindexF[i] = 0; } TMath::Sort(n,inlist,sindexS,down); Int_t last = inlist[sindexS[0]]; Int_t val = last; sindexF[0] = 1; sindexF[0+n] = last; Int_t countPos = 0; // Find frequency for (Int_t i = 1; i < n; i++) { val = inlist[sindexS[i]]; if (last == val) { sindexF[countPos]++; } else { countPos++; sindexF[countPos+n] = val; sindexF[countPos]++; last = val; } } if (last == val) { countPos++; } // Sort according frequency TMath::Sort(countPos,sindexF,sindexS,kTRUE); for (Int_t i = 0; i < countPos; i++) { outlist[2*i ] = sindexF[sindexS[i]+n]; outlist[2*i+1] = sindexF[sindexS[i]]; } delete [] sindexS; delete [] sindexF; return countPos; } //_____________________________________________________________________________ AliTRDtrack *AliTRDtracker::RegisterSeed(AliTRDseed *seeds, Double_t *params) { // // Build a TRD track out of tracklet candidates // // Parameters : // seeds : array of tracklets // params : track parameters (see MakeSeeds() function body for a detailed description) // // Output : // The TRD track. // // Detailed description // // To be discussed with Marian !! // AliTRDcalibDB *cal = AliTRDcalibDB::Instance(); Int_t nTimeBins = cal->GetNumberOfTimeBins(); Double_t alpha = AliTRDgeometry::GetAlpha(); Double_t shift = AliTRDgeometry::GetAlpha()/2.0; Double_t c[15]; c[ 0] = 0.2; c[ 1] = 0.0; c[ 2] = 2.0; c[ 3] = 0.0; c[ 4] = 0.0; c[ 5] = 0.02; c[ 6] = 0.0; c[ 7] = 0.0; c[ 8] = 0.0; c[ 9] = 0.1; c[10] = 0.0; c[11] = 0.0; c[12] = 0.0; c[13] = 0.0; c[14] = params[5]*params[5]*0.01; Int_t index = 0; AliTRDcluster *cl = 0; for (Int_t ilayer = 0; ilayer < 6; ilayer++) { if (seeds[ilayer].IsOK()) { for (Int_t itime = nTimeBins-1; itime > 0; itime--) { if (seeds[ilayer].GetIndexes(itime) > 0) { index = seeds[ilayer].GetIndexes(itime); cl = seeds[ilayer].GetClusters(itime); //printf("l[%d] index[%d] tb[%d] cptr[%p]\n", ilayer, index, itime, cl); break; } } } if (index > 0) { break; } } if (cl == 0) { return 0; } AliTRDtrack *track = new AliTRDtrack(cl ,index ,¶ms[1] ,c ,params[0] ,params[6]*alpha+shift); // SetCluster(cl, 0); // A. Bercuci track->PropagateTo(params[0]-5.0); track->ResetCovariance(1); Int_t rc = FollowBackProlongation(*track); if (rc < 30) { delete track; track = 0; } else { track->CookdEdx(); track->CookdEdxTimBin(-1); CookLabel(track,0.9); } return track; } //_____________________________________________________________________________ void AliTRDtracker::InitLogHists() { // // Create the log histograms // fHBackfit = new TH1D("logTRD_backfit" ,"" , 40,-0.5, 39.5); fHRefit = new TH1D("logTRD_refit" ,"" , 40,-0.5, 39.5); fHClSearch = new TH1D("logTRD_clSearch","" , 60,-0.5, 59.5); fHX = new TH1D("logTRD_X" ,";x (cm)" , 200, 50, 400); fHNCl = new TH1D("logTRD_ncl" ,"" , 40,-0.5, 39.5); fHNClTrack = new TH1D("logTRD_nclTrack","" , 180,-0.5,179.5); fHMinYPos = new TH1D("logTRD_minYPos" ,";#delta Y (cm)" , 400, -6, 6); fHMinYNeg = new TH1D("logTRD_minYNeg" ,";#delta Y (cm)" , 400, -6, 6); fHMinZ = new TH1D("logTRD_minZ" ,";#delta Z (cm)" , 400, -20, 20); fHMinD = new TH2D("logTRD_minD" ,";#delta Y (cm);#delta Z (cm)" , 100, -6, 6 , 100, -50, 50); fHDeltaX = new TH1D("logTRD_deltaX" ,";#delta X (cm)" , 100, -5, 5); fHXCl = new TH1D("logTRD_xCl" ,";cluster x position (cm)" ,1000, 280, 380); const Char_t *nameFindCl[4] = { "logTRD_clY" , "logTRD_clZ" , "logTRD_clB" , "logTRD_clG" }; for (Int_t i = 0; i < 4; i++) { fHFindCl[i] = new TH1D(nameFindCl[i],"",30,-0.5,29.5); } } //_____________________________________________________________________________ void AliTRDtracker::SaveLogHists() { // // Save the log histograms in AliESDs.root // TDirectory *sav = gDirectory; TFile *logFile = 0; TSeqCollection *col = gROOT->GetListOfFiles(); Int_t nn = col->GetEntries(); for (Int_t i = 0; i < nn; i++) { logFile = (TFile *) col->At(i); if (strstr(logFile->GetName(),"AliESDs.root")) { break; } } logFile->cd(); fHBackfit->Write(fHBackfit->GetName(),TObject::kOverwrite); fHRefit->Write(fHRefit->GetName(),TObject::kOverwrite); fHClSearch->Write(fHClSearch->GetName(),TObject::kOverwrite); fHX->Write(fHX->GetName(),TObject::kOverwrite); fHNCl->Write(fHNCl->GetName(),TObject::kOverwrite); fHNClTrack->Write(fHNClTrack->GetName(),TObject::kOverwrite); fHMinYPos->Write(fHMinYPos->GetName(),TObject::kOverwrite); fHMinYNeg->Write(fHMinYNeg->GetName(),TObject::kOverwrite); fHMinD->Write(fHMinD->GetName(),TObject::kOverwrite); fHMinZ->Write(fHMinZ->GetName(),TObject::kOverwrite); fHDeltaX->Write(fHDeltaX->GetName(),TObject::kOverwrite); fHXCl->Write(fHXCl->GetName(),TObject::kOverwrite); for (Int_t i = 0; i < 4; i++) { fHFindCl[i]->Write(fHFindCl[i]->GetName(),TObject::kOverwrite); } logFile->Flush(); sav->cd(); }