X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=TRD%2FAliTRDtracker.cxx;h=7e82a90dca4fa970fe525ac642d6427c179560c3;hb=94a5737f00835b6f4f4d3d2260c3b4f1953ef5cd;hp=72f865f931d4ccda7698492286e4c2c32c70714a;hpb=598156ef086fbf8b9a3ddad5001f831654a1d8da;p=u%2Fmrichter%2FAliRoot.git diff --git a/TRD/AliTRDtracker.cxx b/TRD/AliTRDtracker.cxx index 72f865f931d..7e82a90dca4 100644 --- a/TRD/AliTRDtracker.cxx +++ b/TRD/AliTRDtracker.cxx @@ -17,184 +17,186 @@ /////////////////////////////////////////////////////////////////////////////// // // -// The standard TRD tracker // +// 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 +#include +#include + +#include "AliESDEvent.h" +#include "AliESDtrack.h" +//#include "AliAlignObj.h" +#include "AliGeomManager.h" +#include "AliRieman.h" +#include "AliTrackPointArray.h" #include "AliTRDgeometry.h" -#include "AliTRDparameter.h" #include "AliTRDpadPlane.h" -#include "AliTRDgeometryFull.h" +#include "AliTRDgeometry.h" #include "AliTRDcluster.h" #include "AliTRDtrack.h" -#include "AliESD.h" - +#include "AliTRDseed.h" +#include "AliTRDcalibDB.h" +#include "AliTRDCommonParam.h" #include "AliTRDtracker.h" +#include "AliTRDReconstructor.h" +#include "AliTRDrecoParam.h" +#include "AliTRDCalibraFillHisto.h" -ClassImp(AliTRDtracker) - - const Float_t AliTRDtracker::fgkSeedDepth = 0.5; - const Float_t AliTRDtracker::fgkSeedStep = 0.10; - const Float_t AliTRDtracker::fgkSeedGap = 0.25; - - const Float_t AliTRDtracker::fgkMaxSeedDeltaZ12 = 40.; - const Float_t AliTRDtracker::fgkMaxSeedDeltaZ = 25.; - const Float_t AliTRDtracker::fgkMaxSeedC = 0.0052; - const Float_t AliTRDtracker::fgkMaxSeedTan = 1.2; - const Float_t AliTRDtracker::fgkMaxSeedVertexZ = 150.; - - const Double_t AliTRDtracker::fgkSeedErrorSY = 0.2; - const Double_t AliTRDtracker::fgkSeedErrorSY3 = 2.5; - const Double_t AliTRDtracker::fgkSeedErrorSZ = 0.1; - - const Float_t AliTRDtracker::fgkMinClustersInSeed = 0.7; - - const Float_t AliTRDtracker::fgkMinClustersInTrack = 0.5; - const Float_t AliTRDtracker::fgkMinFractionOfFoundClusters = 0.8; - - const Float_t AliTRDtracker::fgkSkipDepth = 0.3; - const Float_t AliTRDtracker::fgkLabelFraction = 0.8; - const Float_t AliTRDtracker::fgkWideRoad = 20.; - - const Double_t AliTRDtracker::fgkMaxChi2 = 12.; - -const Int_t AliTRDtracker::fgkFirstPlane = 5; -const Int_t AliTRDtracker::fgkLastPlane = 17; - - -//____________________________________________________________________ -AliTRDtracker::AliTRDtracker():AliTracker(), - fGeom(0), - fPar(0), - fNclusters(0), - fClusters(0), - fNseeds(0), - fSeeds(0), - fNtracks(0), - fTracks(0), - fSY2corr(0), - fSZ2corr(0), - fTimeBinsPerPlane(0), - fMaxGap(0), - fVocal(kFALSE), - fAddTRDseeds(kFALSE), - fNoTilt(kFALSE) +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(AliTRDReconstructor *rec) + :AliTracker() + ,fReconstructor(rec) + ,fGeom(0) + ,fNclusters(0) + ,fClusters(0) + ,fNseeds(0) + ,fSeeds(0) + ,fNtracks(0) + ,fTracks(0) + ,fTimeBinsPerPlane(0) + ,fAddTRDseeds(kFALSE) + ,fNoTilt(kFALSE) + ,fHBackfit(NULL) + ,fHClSearch(NULL) + ,fHRefit(NULL) + ,fHX(NULL) + ,fHNCl(NULL) + ,fHNClTrack(NULL) + ,fHMinYPos(NULL) + ,fHMinYNeg(NULL) + ,fHMinZ(NULL) + ,fHMinD(NULL) + ,fHDeltaX(NULL) + ,fHXCl(NULL) + ,fDebugStreamer(0) { + // // Default constructor + // + + for (Int_t i = 0; i < kTrackingSectors; i++) { + fTrSec[i] = 0; + } + + InitLogHists(); - for(Int_t i=0;iIsOpen()) { - printf("AliTRDtracker::AliTRDtracker(): geometry file is not open!\n"); - printf(" DETAIL TRD geometry and DEFAULT TRD parameter will be used\n"); - } - else { - in->cd(); -// in->ls(); - fGeom = (AliTRDgeometry*) in->Get("TRDgeometry"); - fPar = (AliTRDparameter*) in->Get("TRDparameter"); -// fGeom->Dump(); - } - - if(fGeom) { - // fTzero = geo->GetT0(); - printf("Found geometry version %d on file \n", fGeom->IsVersion()); - } - else { - printf("AliTRDtracker::AliTRDtracker(): can't find TRD geometry!\n"); - //printf("The DETAIL TRD geometry will be used\n"); - //fGeom = new AliTRDgeometryDetail(); - fGeom = new AliTRDgeometryFull(); - fGeom->SetPHOShole(); - fGeom->SetRICHhole(); - } - - if (!fPar) { - printf("AliTRDtracker::AliTRDtracker(): can't find TRD parameter!\n"); - printf("The DEFAULT TRD parameter will be used\n"); - fPar = new AliTRDparameter(); - } - fPar->Init(); + TDirectory *savedir = gDirectory; - savedir->cd(); + fGeom = new AliTRDgeometry(); - // fGeom->SetT0(fTzero); - - fNclusters = 0; - fClusters = new TObjArray(2000); - fNseeds = 0; - fSeeds = new TObjArray(2000); - fNtracks = 0; - fTracks = new TObjArray(1000); - - for(Int_t geomS = 0; geomS < kTrackingSectors; geomS++) { - Int_t trS = CookSectorIndex(geomS); - fTrSec[trS] = new AliTRDtrackingSector(fGeom, geomS, fPar); - for (Int_t icham=0;ichamIsHole(0,icham,geomS); - } + for (Int_t geomS = 0; geomS < kTrackingSectors; geomS++) { + Int_t trS = geomS; + fTrSec[trS] = new AliTRDtrackingSector(fGeom,geomS); } - AliTRDpadPlane *padPlane = fPar->GetPadPlane(0,0); - Float_t tiltAngle = TMath::Abs(padPlane->GetTiltingAngle()); - if(tiltAngle < 0.1) { + AliTRDpadPlane *padPlane = fGeom->GetPadPlane(0,0); + Float_t tiltAngle = TMath::Abs(padPlane->GetTiltingAngle()); + if (tiltAngle < 0.1) { fNoTilt = kTRUE; } - fSY2corr = 0.2; - fSZ2corr = 120.; - - if(fNoTilt && (tiltAngle > 0.1)) fSY2corr = fSY2corr + tiltAngle * 0.05; - - - // calculate max gap on track - - Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region - Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region - - Double_t dx = (Double_t) fPar->GetDriftVelocity() - / fPar->GetSamplingFrequency(); - Int_t tbAmp = fPar->GetTimeBefore(); - Int_t maxAmp = (Int_t) ((dxAmp+0.000001)/dx); - if(kTRUE) maxAmp = 0; // intentional until we change the parameter class - Int_t tbDrift = fPar->GetTimeMax(); - Int_t maxDrift = (Int_t) ((dxDrift+0.000001)/dx); - - tbDrift = TMath::Min(tbDrift,maxDrift); - tbAmp = TMath::Min(tbAmp,maxAmp); - - fTimeBinsPerPlane = tbAmp + tbDrift; - fMaxGap = (Int_t) (fTimeBinsPerPlane * fGeom->Nplan() * fgkSkipDepth); + if (!AliTRDcalibDB::Instance()) { + AliFatal("Could not get calibration object"); + } + fTimeBinsPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins(); - fVocal = kFALSE; + fDebugStreamer = new TTreeSRedirector("TRDdebug.root"); savedir->cd(); + + InitLogHists(); + } -//___________________________________________________________________ +//_____________________________________________________________________________ AliTRDtracker::~AliTRDtracker() { // @@ -205,246 +207,206 @@ AliTRDtracker::~AliTRDtracker() fClusters->Delete(); delete fClusters; } + if (fTracks) { fTracks->Delete(); delete fTracks; } + if (fSeeds) { fSeeds->Delete(); delete fSeeds; } - delete fGeom; - delete fPar; - for(Int_t geomS = 0; geomS < kTrackingSectors; geomS++) { + if (fGeom) { + delete fGeom; + } + + for (Int_t geomS = 0; geomS < kTrackingSectors; geomS++) { delete fTrSec[geomS]; } -} + if (fDebugStreamer) { + delete fDebugStreamer; + } -//_____________________________________________________________________ +} -Bool_t AliTRDtracker::AdjustSector(AliTRDtrack *track) { - // - // Rotates the track when necessary +//_____________________________________________________________________________ +Int_t AliTRDtracker::LocalToGlobalID(Int_t lid) +{ // + // Transform internal TRD ID to global detector ID + // + + Int_t isector = fGeom->GetSector(lid); + Int_t istack = fGeom->GetStack(lid); + Int_t ilayer = fGeom->GetLayer(lid); + + AliGeomManager::ELayerID iLayer = AliGeomManager::kTRD1; + switch (ilayer) { + 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->Nstack() + istack; + UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,modId); + + return volid; - Double_t alpha = AliTRDgeometry::GetAlpha(); - Double_t y = track->GetY(); - Double_t ymax = track->GetX()*TMath::Tan(0.5*alpha); - - //Int_t ns = AliTRDgeometry::kNsect; - //Int_t s=Int_t(track->GetAlpha()/alpha)%ns; - - if (y > ymax) { - //s = (s+1) % ns; - if (!track->Rotate(alpha)) return kFALSE; - } else if (y <-ymax) { - //s = (s-1+ns) % ns; - if (!track->Rotate(-alpha)) return kFALSE; - } - - return kTRUE; } -//_____________________________________________________________________ -inline Double_t f1trd(Double_t x1,Double_t y1, - Double_t x2,Double_t y2, - Double_t x3,Double_t y3) +//_____________________________________________________________________________ +Int_t AliTRDtracker::GlobalToLocalID(Int_t gid) { // - // Initial approximation of the track curvature - // - Double_t d=(x2-x1)*(y3-y2)-(x3-x2)*(y2-y1); - Double_t a=0.5*((y3-y2)*(y2*y2-y1*y1+x2*x2-x1*x1)- - (y2-y1)*(y3*y3-y2*y2+x3*x3-x2*x2)); - Double_t b=0.5*((x2-x1)*(y3*y3-y2*y2+x3*x3-x2*x2)- - (x3-x2)*(y2*y2-y1*y1+x2*x2-x1*x1)); + // Transform global detector ID to local detector ID + // + + Int_t modId = 0; + AliGeomManager::ELayerID layerId = AliGeomManager::VolUIDToLayer(gid,modId); + + Int_t isector = modId / fGeom->Nstack(); + Int_t istack = modId % fGeom->Nstack(); + 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,istack,isector); - Double_t xr=TMath::Abs(d/(d*x1-a)), yr=d/(d*y1-b); + return lid; - return -xr*yr/sqrt(xr*xr+yr*yr); -} +} -//_____________________________________________________________________ -inline Double_t f2trd(Double_t x1,Double_t y1, - Double_t x2,Double_t y2, - Double_t x3,Double_t y3) +//_____________________________________________________________________________ +Bool_t AliTRDtracker::AdjustSector(AliTRDtrack* const track) const { // - // Initial approximation of the track curvature times X coordinate - // of the center of curvature + // Rotates the track when necessary // - Double_t d=(x2-x1)*(y3-y2)-(x3-x2)*(y2-y1); - Double_t a=0.5*((y3-y2)*(y2*y2-y1*y1+x2*x2-x1*x1)- - (y2-y1)*(y3*y3-y2*y2+x3*x3-x2*x2)); - Double_t b=0.5*((x2-x1)*(y3*y3-y2*y2+x3*x3-x2*x2)- - (x3-x2)*(y2*y2-y1*y1+x2*x2-x1*x1)); + 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; + } + } - Double_t xr=TMath::Abs(d/(d*x1-a)), yr=d/(d*y1-b); + return kTRUE; - return -a/(d*y1-b)*xr/sqrt(xr*xr+yr*yr); -} +} -//_____________________________________________________________________ -inline Double_t f3trd(Double_t x1,Double_t y1, - Double_t x2,Double_t y2, - Double_t z1,Double_t z2) +//_____________________________________________________________________________ +AliTRDcluster *AliTRDtracker::GetCluster(AliTRDtrack * const track, Int_t plane + , Int_t timebin, UInt_t &index) { // - // Initial approximation of the tangent of the track dip angle + // Try to find cluster in the backup list // - return (z1 - z2)/sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2)); -} + AliTRDcluster *cl =0; + const Int_t *indexes = track->GetBackupIndexes(); - -AliTRDcluster * AliTRDtracker::GetCluster(AliTRDtrack * track, Int_t plane, Int_t timebin){ - // - //try to find cluster in the backup list - // - AliTRDcluster * cl =0; - UInt_t *indexes = track->GetBackupIndexes(); - for (UInt_t i=0;iUncheckedAt(indexes[i]); - if (!cli) break; - if (cli->GetLocalTimeBin()!=timebin) continue; - Int_t iplane = fGeom->GetPlane(cli->GetDetector()); - if (iplane==plane) { - cl = cli; + 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 ilayer = fGeom->GetLayer(cli->GetDetector()); + if (ilayer == plane) { + cl = cli; + index = indexes[i]; break; } } - return cl; -} + return cl; -Int_t AliTRDtracker::GetLastPlane(AliTRDtrack * track){ - // - //return last updated plane - Int_t lastplane=0; - UInt_t *indexes = track->GetBackupIndexes(); - for (UInt_t i=0;iUncheckedAt(indexes[i]); - if (!cli) break; - Int_t iplane = fGeom->GetPlane(cli->GetDetector()); - if (iplane>lastplane) { - lastplane = iplane; - } - } - return lastplane; } -//___________________________________________________________________ -Int_t AliTRDtracker::Clusters2Tracks(AliESD* event) + +//_____________________________________________________________________________ +Int_t AliTRDtracker::GetLastPlane(AliTRDtrack * const track) { // - // Finds tracks within the TRD. The ESD event is expected to contain seeds - // at the outer part of the TRD. The seeds - // are found within the TRD if fAddTRDseeds is TRUE. - // The tracks are propagated to the innermost time bin - // of the TRD and the ESD event is updated + // Return last updated plane // - Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins(); - Float_t foundMin = fgkMinClustersInTrack * timeBins; - Int_t nseed = 0; - Int_t found = 0; - Int_t innerTB = fTrSec[0]->GetInnerTimeBin(); + Int_t lastplane = 0; + const Int_t *indexes = track->GetBackupIndexes(); - Int_t n = event->GetNumberOfTracks(); - for (Int_t i=0; iGetTrack(i); - ULong_t status=seed->GetStatus(); - if ( (status & AliESDtrack::kTRDout ) == 0 ) continue; - if ( (status & AliESDtrack::kTRDin) != 0 ) continue; - nseed++; - - AliTRDtrack* seed2 = new AliTRDtrack(*seed); - //seed2->ResetCovariance(); - AliTRDtrack *pt = new AliTRDtrack(*seed2,seed2->GetAlpha()); - AliTRDtrack &t=*pt; - FollowProlongation(t, innerTB); - if (t.GetNumberOfClusters() >= foundMin) { - UseClusters(&t); - CookLabel(pt, 1-fgkLabelFraction); - // t.CookdEdx(); + for (UInt_t i = 0; i < kMaxTimeBinIndex; i++) { + AliTRDcluster *cli = (AliTRDcluster *) fClusters->UncheckedAt(indexes[i]); + if (!cli) { + break; } - found++; -// cout<UpdateTrackParams(pt, AliESDtrack::kTRDin); - } - delete seed2; - delete pt; - } - - cout<<"Number of loaded seeds: "<GetNumberOfTimeBins(); - - Int_t nSteps = (Int_t) (fgkSeedDepth / fgkSeedStep); - Int_t gap = (Int_t) (timeBins * fgkSeedGap); - Int_t step = (Int_t) (timeBins * fgkSeedStep); - - // make a first turn with tight cut on initial curvature - for(Int_t turn = 1; turn <= 2; turn++) { - if(turn == 2) { - nSteps = (Int_t) (fgkSeedDepth / (3*fgkSeedStep)); - step = (Int_t) (timeBins * (3*fgkSeedStep)); - } - for(Int_t i=0; iGetEntriesFast(); - - MakeSeeds(inner, outer, turn); - - nseed=fSeeds->GetEntriesFast(); - // printf("\n turn %d, step %d: number of seeds for TRD inward %d\n", - // turn, i, nseed); - - for (Int_t i=0; iUncheckedAt(i), &t=*pt; - FollowProlongation(t,innerTB); - if (t.GetNumberOfClusters() >= foundMin) { - UseClusters(&t); - CookLabel(pt, 1-fgkLabelFraction); - t.CookdEdx(); - found++; -// cout<AddTrack(&track); - // track.SetTRDtrack(new AliTRDtrack(*pt)); - } - } - delete fSeeds->RemoveAt(i); - fNseeds--; - } - } + Int_t ilayer = fGeom->GetLayer(cli->GetDetector()); + if (ilayer > lastplane) { + lastplane = ilayer; } } - - cout<<"Total number of found tracks: "<GetNumberOfTracks(); - // - //Sort tracks - Float_t *quality =new Float_t[n]; - Int_t *index =new Int_t[n]; - for (Int_t i=0; iGetTrack(i); - Double_t covariance[15]; - seed->GetExternalCovariance(covariance); - quality[i] = covariance[0]+covariance[2]; - } - TMath::Sort(n,quality,index,kFALSE); - // - for (Int_t i=0; iGetTrack(i); - AliESDtrack* seed=event->GetTrack(index[i]); - - ULong_t status=seed->GetStatus(); - if ( (status & AliESDtrack::kTPCout ) == 0 ) continue; - if ( (status & AliESDtrack::kTRDout) != 0 ) continue; - - 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); - /* - // only debug purpose - if (track->GetNumberOfClusters()SetSeedLabel(lbl); - FollowBackProlongation(*track1); - AliTRDtrack *track2= new AliTRDtrack(*seed); - track->SetSeedLabel(lbl); - FollowBackProlongation(*track2); - delete track1; - delete track2; - } - */ - if (TMath::Abs(track->GetC()-p4)/TMath::Abs(p4)<0.2 || TMath::Abs(track->GetPt())>0.8 ) { - // - //make backup for back propagation - // - Int_t foundClr = track->GetNumberOfClusters(); - if (foundClr >= foundMin) { - track->CookdEdx(); - CookLabel(track, 1-fgkLabelFraction); - if(track->GetChi2()/track->GetNumberOfClusters()<4) { // sign only gold tracks - if (seed->GetKinkIndex(0)==0&&TMath::Abs(track->GetPt())<1.5 ) UseClusters(track); - } - Bool_t isGold = kFALSE; + Int_t found = 0; // number of tracks found + Float_t foundMin = 20.0; - if (track->GetChi2()/track->GetNumberOfClusters()<5) { //full gold track - seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup); - isGold = kTRUE; - } - if (!isGold && track->GetNCross()==0&&track->GetChi2()/track->GetNumberOfClusters()<7){ //almost gold track - seed->UpdateTrackParams(track, 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; - } + Int_t nSeed = event->GetNumberOfTracks(); + if(!nSeed){ + // run stand alone tracking + if (fReconstructor->IsSeeding()) Clusters2Tracks(event); + return 0; } - } - } - // - //Propagation to the TOF (I.Belikov) - CookdEdxTimBin(*track); - if (track->GetStop()==kFALSE){ - - Double_t xtof=371.; - Double_t c2=track->GetC()*xtof - track->GetEta(); - if (TMath::Abs(c2)>=0.99) { - delete track; - continue; - } - Double_t xTOF0 = 365. ; - PropagateToOuterPlane(*track,xTOF0); - // - //energy losses taken to the account - check one more time - c2=track->GetC()*xtof - track->GetEta(); - if (TMath::Abs(c2)>=0.99) { - delete track; - continue; - } - - // - Double_t ymax=xtof*TMath::Tan(0.5*AliTRDgeometry::GetAlpha()); - Double_t y=track->GetYat(xtof); - if (y > ymax) { - if (!track->Rotate(AliTRDgeometry::GetAlpha())) { - delete track; - continue; + + 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]; } - } else if (y <-ymax) { - if (!track->Rotate(-AliTRDgeometry::GetAlpha())) { - delete track; - continue; + // 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 (fReconstructor->GetStreamLevel(AliTRDReconstructor::kTracker) > 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(AliTRDCalPID::kNSlicesLQ); + for (Int_t i = 0; i < AliTRDtrack::kNplane; i++) { + for (Int_t j = 0; j < AliTRDCalPID::kNSlicesLQ; 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(AliTRDCalPID::kNSlicesLQ); + 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; } - } - - if (track->PropagateTo(xtof)) { - seed->UpdateTrackParams(track, AliESDtrack::kTRDout); - for (Int_t i=0;iSetTRDsignals(track->GetPIDsignals(i),i); - seed->SetTRDTimBin(track->GetPIDTimBin(i),i); - } - seed->SetTRDtrack(new AliTRDtrack(*track)); - if (track->GetNumberOfClusters()>foundMin) found++; - } - }else{ - if (track->GetNumberOfClusters()>15&&track->GetNumberOfClusters()>0.5*expectedClr){ - seed->UpdateTrackParams(track, AliESDtrack::kTRDout); - //seed->SetStatus(AliESDtrack::kTRDStop); - for (Int_t i=0;iSetTRDsignals(track->GetPIDsignals(i),i); - seed->SetTRDTimBin(track->GetPIDTimBin(i),i); - } - seed->SetTRDtrack(new AliTRDtrack(*track)); - found++; - } - } - seed->SetTRDQuality(track->StatusForTOF()); - delete track; - - //End of propagation to the TOF - //if (foundClr>foundMin) - // seed->UpdateTrackParams(track, AliESDtrack::kTRDout); - - - } - - cerr<<"Number of seeds: "<Clear(); fNseeds=0; - delete [] index; - delete [] quality; + + 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(AliESD* event) +Int_t AliTRDtracker::RefitInward(AliESDEvent *event) { // // Refits tracks within the TRD. The ESD event is expected to contain seeds @@ -617,887 +670,602 @@ Int_t AliTRDtracker::RefitInward(AliESD* event) // 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 innerTB = fTrSec[0]->GetInnerTimeBin(); + //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; iGetTrack(i); - new(&seed2) AliTRDtrack(*seed); - if (seed2.GetX()<270){ - seed->UpdateTrackParams(&seed2, AliESDtrack::kTRDbackup); // backup TPC track - only update + 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 ) { + ULong_t status = seed->GetStatus(); + if ((status & AliESDtrack::kTRDout) == 0) { + fHRefit->Fill(2); continue; } - if ( (status & AliESDtrack::kTRDin) != 0 ) { + if ((status & AliESDtrack::kTRDin) != 0) { + fHRefit->Fill(3); continue; } - nseed++; - if (1/seed2.Get1Pt()>5.&& seed2.GetX()>260.) { - Double_t oldx = seed2.GetX(); - seed2.PropagateTo(500.); - seed2.ResetCovariance(1.); - seed2.PropagateTo(oldx); - } - else{ - seed2.ResetCovariance(5.); - } + + nseed++; + fHRefit->Fill(4); + + seed2.ResetCovariance(50.0); AliTRDtrack *pt = new AliTRDtrack(seed2,seed2.GetAlpha()); - UInt_t * indexes2 = seed2.GetIndexes(); -// for (Int_t i=0;iSetPIDsignals(seed2.GetPIDsignals(i),i); -// pt->SetPIDTimBin(seed2.GetPIDTimBin(i),i); -// } - - UInt_t * indexes3 = pt->GetBackupIndexes(); - for (Int_t i=0;i<200;i++) { - if (indexes2[i]==0) break; - indexes3[i] = indexes2[i]; - } - //AliTRDtrack *pt = seed2; - AliTRDtrack &t=*pt; - FollowProlongation(t, innerTB); - if (t.GetNumberOfClusters() >= foundMin) { - // UseClusters(&t); - //CookLabel(pt, 1-fgkLabelFraction); - // t.CookdEdx(); + const Int_t *indexes2 = seed2.GetIndexes(); + for (Int_t l = 0; l < AliTRDtrack::kNplane;++l) { + for (Int_t j = 0; j < AliTRDCalPID::kNSlicesLQ;j++) { + pt->SetPIDsignals(seed2.GetPIDsignals(l,j),l,j); + } + pt->SetPIDTimBin(seed2.GetPIDTimBin(l),l); } + + Int_t *indexes3 = const_cast(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()); + + //calculate PID methods + pt->SetPIDMethod(AliTRDtrack::kLQ); + pt->CookPID(pidQ); + seed->SetTRDpid(pt->GetPID()); + seed->SetTRDntracklets(pidQ<<3); + + // update calibration + if(calibra->GetHisto2d()) calibra->UpdateHistograms(pt); found++; -// cout<UpdateTrackParams(pt, AliESDtrack::kTRDrefit); - // for (Int_t i=0;iSetTRDsignals(pt->GetPIDsignals(i),i); -// seed->SetTRDTimBin(pt->GetPIDTimBin(i),i); -// } - }else{ - //if not prolongation to TPC - propagate without update - AliTRDtrack* seed2 = new AliTRDtrack(*seed); - seed2->ResetCovariance(5.); - AliTRDtrack *pt2 = new AliTRDtrack(*seed2,seed2->GetAlpha()); - delete seed2; - if (PropagateToTPC(*pt2)) { - pt2->CookdEdx(0.,1.); - CookdEdxTimBin(*pt2); - seed->UpdateTrackParams(pt2, AliESDtrack::kTRDrefit); - // for (Int_t i=0;iSetTRDsignals(pt2->GetPIDsignals(i),i); -// seed->SetTRDTimBin(pt2->GetPIDTimBin(i),i); -// } + + 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 < AliTRDCalPID::kNSlicesLQ; 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 < AliTRDCalPID::kNSlicesLQ; 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 (fReconstructor->GetStreamLevel(AliTRDReconstructor::kTracker) > 0) { + seed->AddCalibObject(new AliTRDtrack(*pt2/*, kTRUE*/)); } delete pt2; - } + + } + + // Add TRD track to ESDfriendTrack + if (fReconstructor->GetStreamLevel(AliTRDReconstructor::kTracker) > 0) { + seed->AddCalibObject(new AliTRDtrack(*pt/*, kTRUE*/)); + } delete pt; + } - cout<<"Number of loaded seeds: "<= 0; iplane--) { - Float_t wIndex, wTB, wChi2; - Float_t wYrt, wYclosest, wYcorrect, wYwindow; - Float_t wZrt, wZclosest, wZcorrect, wZwindow; - Float_t wPx, wPy, wPz, wC; - Double_t px, py, pz; - Float_t wSigmaC2, wSigmaTgl2, wSigmaY2, wSigmaZ2; - Int_t lastplane = GetLastPlane(&t); + Int_t row0 = GetGlobalTimeBin(0,iplane,GetTimeBinsPerPlane()-1); + Int_t rowlast = GetGlobalTimeBin(0,iplane,0); - Int_t trackIndex = t.GetLabel(); + // 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; + } + } - Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); + if (!AdjustSector(&t)) { + break; + } - Int_t tryAgain=fMaxGap; + // 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; + } - Double_t alpha=t.GetAlpha(); - alpha = TVector2::Phi_0_2pi(alpha); + 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(); - Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; - Double_t radLength, rho, x, dx, y, ymax, z; + if (timeBin) { - Int_t expectedNumberOfClusters = 0; - Bool_t lookForCluster; + AliTRDcluster *cl0 = timeBin[0]; + if (!cl0) { + // No clusters in given time bin + continue; + } - alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning + Int_t layer = fGeom->GetLayer(cl0->GetDetector()); + if (layer > lastplane) { + continue; + } - - for (Int_t nr=fTrSec[0]->GetLayerNumber(t.GetX()); nr>rf; nr--) { - - y = t.GetY(); z = t.GetZ(); - - // first propagate to the inner surface of the current time bin - fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); - x = fTrSec[s]->GetLayer(nr)->GetX()-dx/2; y = t.GetY(); z = t.GetZ(); - if(!t.PropagateTo(x,radLength,rho)) break; - y = t.GetY(); - ymax = x*TMath::Tan(0.5*alpha); - if (y > ymax) { - s = (s+1) % ns; - if (!t.Rotate(alpha)) break; - if(!t.PropagateTo(x,radLength,rho)) break; - } else if (y <-ymax) { - s = (s-1+ns) % ns; - if (!t.Rotate(-alpha)) break; - if(!t.PropagateTo(x,radLength,rho)) break; - } - - y = t.GetY(); z = t.GetZ(); - - // now propagate to the middle plane of the next time bin - fTrSec[s]->GetLayer(nr-1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); - x = fTrSec[s]->GetLayer(nr-1)->GetX(); y = t.GetY(); z = t.GetZ(); - if(!t.PropagateTo(x,radLength,rho)) break; - y = t.GetY(); - ymax = x*TMath::Tan(0.5*alpha); - if (y > ymax) { - s = (s+1) % ns; - if (!t.Rotate(alpha)) break; - if(!t.PropagateTo(x,radLength,rho)) break; - } else if (y <-ymax) { - s = (s-1+ns) % ns; - if (!t.Rotate(-alpha)) break; - if(!t.PropagateTo(x,radLength,rho)) break; - } - - - if(lookForCluster) { + Int_t timebin = cl0->GetLocalTimeBin(); + AliTRDcluster *cl2 = GetCluster(&t,layer,timebin,index); - expectedNumberOfClusters++; - wIndex = (Float_t) t.GetLabel(); - wTB = nr; + if (cl2) { + cl = cl2; + //Double_t h01 = GetTiltFactor(cl); //I.B's fix + //maxChi2=t.GetPredictedChi2(cl,h01); + } - AliTRDpropagationLayer& timeBin=*(fTrSec[s]->GetLayer(nr-1)); + if (cl) { - Double_t sy2=ExpectedSigmaY2(x,t.GetTgl(),t.GetPt()); - Double_t sz2=ExpectedSigmaZ2(x,t.GetTgl()); + //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 llayer = fGeom->GetLayer(det); - Double_t road; - if((t.GetSigmaY2() + sy2) > 0) road=10.*sqrt(t.GetSigmaY2() + sy2); - else return expectedNumberOfClusters; - - wYrt = (Float_t) y; - wZrt = (Float_t) z; - wYwindow = (Float_t) road; - t.GetPxPyPz(px,py,pz); - wPx = (Float_t) px; - wPy = (Float_t) py; - wPz = (Float_t) pz; - wC = (Float_t) t.GetC(); - wSigmaC2 = (Float_t) t.GetSigmaC2(); - wSigmaTgl2 = (Float_t) t.GetSigmaTgl2(); - wSigmaY2 = (Float_t) t.GetSigmaY2(); - wSigmaZ2 = (Float_t) t.GetSigmaZ2(); - wChi2 = -1; - + if (t.GetX() > 345.0) { + t.SetNLast(t.GetNLast() + 1); + t.SetChi2Last(t.GetChi2Last() + maxChi2); + } - AliTRDcluster *cl=0; - UInt_t index=0; - - Double_t maxChi2=fgkMaxChi2; - - wYclosest = 12345678; - wYcorrect = 12345678; - wZclosest = 12345678; - wZcorrect = 12345678; - wZwindow = TMath::Sqrt(2.25 * 12 * sz2); - - // Find the closest correct cluster for debugging purposes - if (timeBin&&fVocal) { - Float_t minDY = 1000000; - for (Int_t i=0; iGetLabel(0) != trackIndex) && - (c->GetLabel(1) != trackIndex) && - (c->GetLabel(2) != trackIndex)) continue; - if(TMath::Abs(c->GetY() - y) > minDY) continue; - minDY = TMath::Abs(c->GetY() - y); - wYcorrect = c->GetY(); - wZcorrect = c->GetZ(); - - Double_t h01 = GetTiltFactor(c); - wChi2 = t.GetPredictedChi2(c, h01); - } - } + Double_t xcluster = cl->GetX(); + t.PropagateTo(xcluster,xx0,xrho); + if (!AdjustSector(&t)) { + break; //I.B's fix + } - // Now go for the real cluster search + maxChi2 = t.GetPredictedChi2(cl,h01); + if (maxChi2 < 1e+10) { + if (!t.UpdateMI(cl,maxChi2,index,h01,llayer)) { + // ???? + } + else { + //SetCluster(cl, GetNumberOfClusters()-1); + kUPDATED = kTRUE; + } + } - if (timeBin) { - // - //find cluster in history - cl =0; - - AliTRDcluster * cl0 = timeBin[0]; - if (!cl0) { - continue; - } - Int_t plane = fGeom->GetPlane(cl0->GetDetector()); - if (plane>lastplane) continue; - Int_t timebin = cl0->GetLocalTimeBin(); - AliTRDcluster * cl2= GetCluster(&t,plane, timebin); - if (cl2) { - cl =cl2; - Double_t h01 = GetTiltFactor(cl); - maxChi2=t.GetPredictedChi2(cl,h01); - } - if ((!cl) && road>fgkWideRoad) { - //if (t.GetNumberOfClusters()>4) - // cerr<GetY() > y+road) break; - if (c->IsUsed() > 0) continue; - if((c->GetZ()-z)*(c->GetZ()-z) > 3 * sz2) continue; - - Double_t h01 = GetTiltFactor(c); - Double_t chi2=t.GetPredictedChi2(c,h01); - - if (chi2 > maxChi2) continue; - maxChi2=chi2; - cl=c; - index=timeBin.GetIndex(i); - } } - if(!cl) { - Int_t maxn = timeBin; - for (Int_t i=timeBin.Find(y-road); iGetY() > y+road) break; - if (c->IsUsed() > 0) continue; - if((c->GetZ()-z)*(c->GetZ()-z) > 12 * sz2) continue; - - Double_t h01 = GetTiltFactor(c); - Double_t chi2=t.GetPredictedChi2(c, h01); - - if (chi2 > maxChi2) continue; - maxChi2=chi2; - cl=c; - index=timeBin.GetIndex(i); - } - } - */ - if (cl) { - - wYclosest = cl->GetY(); - wZclosest = cl->GetZ(); - Double_t h01 = GetTiltFactor(cl); - - if (cl->GetNPads()<5) - t.SetSampledEdx(cl->GetQ()/dx); - //printf("Track position\t%f\t%f\t%f\n",t.GetX(),t.GetY(),t.GetZ()); - //printf("Cluster position\t%d\t%f\t%f\n",cl->GetLocalTimeBin(),cl->GetY(),cl->GetZ()); - Int_t det = cl->GetDetector(); - Int_t plane = fGeom->GetPlane(det); - - if(!t.UpdateMI(cl,maxChi2,index,h01,plane)) { - //if(!t.Update(cl,maxChi2,index,h01)) { - //if(!tryAgain--) return 0; - } - else tryAgain=fMaxGap; - } - else { - //if (tryAgain==0) break; - tryAgain--; - } } - } + + } + } + return expectedNumberOfClusters; - - -} -//___________________________________________________________________ +} -Int_t AliTRDtracker::FollowBackProlongation(AliTRDtrack& t) +//_____________________________________________________________________________ +Int_t AliTRDtracker::FollowBackProlongation(AliTRDtrack &t) { + // // Starting from current radial position of track this function - // extrapolates the track up to outer timebin and in the sensitive + // 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; - Float_t wIndex, wTB, wChi2; - Float_t wYrt, wYclosest, wYcorrect, wYwindow; - Float_t wZrt, wZclosest, wZcorrect, wZwindow; - Float_t wSigmaC2, wSigmaTgl2, wSigmaY2, wSigmaZ2; - - Int_t trackIndex = t.GetLabel(); - Int_t tryAgain=fMaxGap; - - Double_t alpha=t.GetAlpha(); - TVector2::Phi_0_2pi(alpha); - - Int_t s; - - Int_t clusters[1000]; - for (Int_t i=0;i<1000;i++) clusters[i]=-1; - - Int_t outerTB = fTrSec[0]->GetOuterTimeBin(); - Double_t radLength, rho, x, dx, y, ymax = 0, z; - Bool_t lookForCluster; - - Int_t expectedNumberOfClusters = 0; - x = t.GetX(); + Double_t xx0 = 0.0; + Double_t xrho = 0.0; - alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning + Float_t ratio0 = 0.0; - Int_t nRefPlane = fgkFirstPlane; - Bool_t isNewLayer = kFALSE; + Int_t expectedNumberOfClusters = 0; - Double_t chi2; - Double_t minDY; - Int_t zone =-10; - Int_t nr; - for (nr=fTrSec[0]->GetLayerNumber(t.GetX()); nrGetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); - x = fTrSec[s]->GetLayer(nr)->GetX()+dx/2; - y = t.GetY(); - z = t.GetZ(); +// // 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; + } - if(!t.PropagateTo(x,radLength,rho)) break; - // if (!AdjustSector(&t)) break; - // - // MI -fix untill correct material desription will be implemented - // - Float_t angle = t.GetAlpha(); // MI - if rotation - we go through the material - if (!AdjustSector(&t)) break; - Int_t cross = kFALSE; - Int_t crosz = kFALSE; - if (TMath::Abs(angle - t.GetAlpha())>0.000001) cross = kTRUE; //better to stop track - Int_t currentzone = fTrSec[s]->GetLayer(nr)->GetZone(z); - if (currentzone==-10) {cross = kTRUE,crosz=kTRUE;} // we are in the frame - if (currentzone>-10){ // layer knows where we are - if (zone==-10) zone = currentzone; - if (zone!=currentzone) { - cross=kTRUE; - crosz=kTRUE; + // Propagate closer to the current chamber if neccessary + if (currentx > (fgkMaxStep + t.GetX())) { + if (!PropagateToX(t,currentx-fgkMaxStep,fgkMaxStep)) { + fHClSearch->Fill(hb+2); + break; } } - if (TMath::Abs(t.GetSnp())>0.8 && t.GetBackupTrack()==0) t.MakeBackupTrack(); - if (cross) { - if (t.GetNCross()==0 && t.GetBackupTrack()==0) t.MakeBackupTrack(); - t.IncCross(); - if (t.GetNCross()>4) break; - } - // - // - s = t.GetSector(); - if (!t.PropagateTo(x,radLength,rho)) break; - y = t.GetY(); - z = t.GetZ(); - - // Barrel Tracks [SR, 04.04.2003] - - s = t.GetSector(); - if (fTrSec[s]->GetLayer(nr)->IsSensitive() != - fTrSec[s]->GetLayer(nr+1)->IsSensitive() ) { - -// if (IsStoringBarrel()) StoreBarrelTrack(&t, nRefPlane++, kTrackBack); + // Rotate track to adjacent sector if neccessary + if (!AdjustSector(&t)) { + fHClSearch->Fill(hb+3); + break; } - if (fTrSec[s]->GetLayer(nr-1)->IsSensitive() && - ! fTrSec[s]->GetLayer(nr)->IsSensitive()) { - isNewLayer = kTRUE; - } else {isNewLayer = kFALSE;} - - y = t.GetY(); - z = t.GetZ(); - - // now propagate to the middle plane of the next time bin - fTrSec[s]->GetLayer(nr+1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); - if (crosz){ - rho = 1000*2.7; radLength = 24.01; //TEMPORARY - aluminium in between z - will be detected using GeoModeler in future versions + // Check whether azimuthal angle is getting too large + if (TMath::Abs(t.GetSnp()) > fgkMaxSnp) { + fHClSearch->Fill(hb+4); + break; } - x = fTrSec[s]->GetLayer(nr+1)->GetX(); - if(!t.PropagateTo(x,radLength,rho)) break; - if (!AdjustSector(&t)) break; - s = t.GetSector(); - if(!t.PropagateTo(x,radLength,rho)) break; - - if (TMath::Abs(t.GetSnp())>0.95) break; - y = t.GetY(); - z = t.GetZ(); - - if(fVocal) printf("nr+1=%d, x %f, z %f, y %f, ymax %f\n",nr+1,x,z,y,ymax); - // printf("label %d, pl %d, lookForCluster %d \n", - // trackIndex, nr+1, lookForCluster); - - if(lookForCluster) { -// if (clusters[nr]==-1) { -// FindClusters(s,nr,nr+30,&t,clusters); -// } + 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.fNExpected++; - if (t.fX>345) t.fNExpectedLast++; - wIndex = (Float_t) t.GetLabel(); - wTB = fTrSec[s]->GetLayer(nr+1)->GetTimeBinIndex(); - - AliTRDpropagationLayer& timeBin=*(fTrSec[s]->GetLayer(nr+1)); - Double_t sy2=ExpectedSigmaY2(t.GetX(),t.GetTgl(),t.GetPt()); - Double_t sz2=ExpectedSigmaZ2(t.GetX(),t.GetTgl()); - if((t.GetSigmaY2() + sy2) < 0) break; - Double_t road = 10.*sqrt(t.GetSigmaY2() + sy2); - Double_t y=t.GetY(), z=t.GetZ(); - - wYrt = (Float_t) y; - wZrt = (Float_t) z; - wYwindow = (Float_t) road; - wSigmaC2 = (Float_t) t.GetSigmaC2(); - wSigmaTgl2 = (Float_t) t.GetSigmaTgl2(); - wSigmaY2 = (Float_t) t.GetSigmaY2(); - wSigmaZ2 = (Float_t) t.GetSigmaZ2(); - wChi2 = -1; - - if (road>fgkWideRoad) { - if (t.GetNumberOfClusters()>4) - cerr< 345.0) { + t.SetNExpectedLast(t.GetNExpectedLast() + 1); } - - if (nRefPlane == fgkFirstPlane) maxChi2 = 20 * fgkMaxChi2; - if (nRefPlane == fgkFirstPlane+2) maxChi2 = 15 * fgkMaxChi2; - if (t.GetNRotate() > 0) maxChi2 = 3 * maxChi2; - - - wYclosest = 12345678; - wYcorrect = 12345678; - wZclosest = 12345678; - wZcorrect = 12345678; - wZwindow = TMath::Sqrt(2.25 * 12 * sz2); - - // Find the closest correct cluster for debugging purposes - if (timeBin&&fVocal) { - minDY = 1000000; - for (Int_t i=0; iGetLabel(0) != trackIndex) && - (c->GetLabel(1) != trackIndex) && - (c->GetLabel(2) != trackIndex)) continue; - if(TMath::Abs(c->GetY() - y) > minDY) continue; - //minDY = TMath::Abs(c->GetY() - y); - minDY = c->GetY() - y; - wYcorrect = c->GetY(); - wZcorrect = c->GetZ(); - - Double_t h01 = GetTiltFactor(c); - wChi2 = t.GetPredictedChi2(c, h01); - } - } - - // Now go for the real cluster search - - if (timeBin) { - /* - if (clusters[nr+1]>0) { - index = clusters[nr+1]; - cl = (AliTRDcluster*)GetCluster(index); - Double_t h01 = GetTiltFactor(cl); - maxChi2=t.GetPredictedChi2(cl,h01); - } - */ - - if (!cl){ - Int_t maxn = timeBin; - for (Int_t i=timeBin.Find(y-road); iGetY() > y+road) break; - if (c->IsUsed() > 0) continue; - if((c->GetZ()-z)*(c->GetZ()-z) > 3 * sz2) continue; - - Double_t h01 = GetTiltFactor(c); - chi2=t.GetPredictedChi2(c,h01); - - if (chi2 > maxChi2) continue; - maxChi2=chi2; - cl=c; - index=timeBin.GetIndex(i); - - //check is correct - if((c->GetLabel(0) != trackIndex) && - (c->GetLabel(1) != trackIndex) && - (c->GetLabel(2) != trackIndex)) t.AddNWrong(); - } - } - if(!cl) { - Int_t maxn = timeBin; - for (Int_t i=timeBin.Find(y-road); iGetY() > y+road) break; - if (c->IsUsed() > 0) continue; - // if((c->GetZ()-z)*(c->GetZ()-z) > 2.25 * 12 * sz2) continue; - if((c->GetZ()-z)*(c->GetZ()-z) > 12. * sz2) continue; - // - // - Double_t h01 = GetTiltFactor(c); - chi2=t.GetPredictedChi2(c,h01); - - if (chi2 > maxChi2) continue; - maxChi2=chi2; - cl=c; - index=timeBin.GetIndex(i); - } - } - + 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) { - wYclosest = cl->GetY(); - wZclosest = cl->GetZ(); - if (cl->GetNPads()<5) - t.SetSampledEdx(cl->GetQ()/dx); - Double_t h01 = GetTiltFactor(cl); - Int_t det = cl->GetDetector(); - Int_t plane = fGeom->GetPlane(det); - if (t.fX>345){ - t.fNLast++; - t.fChi2Last+=maxChi2; - } - if(!t.UpdateMI(cl,maxChi2,index,h01,plane)) { - if(!t.Update(cl,maxChi2,index,h01)) { - if(!tryAgain--) return 0; - } - } - else tryAgain=fMaxGap; - } - else { - if (tryAgain==0) break; - tryAgain--; - } - - isNewLayer = kFALSE; - - } - } - } - if (nrGetDetector(); - Int_t localTimeBin=cl->GetLocalTimeBin(); - Int_t sector=fGeom->GetSector(detector); - Int_t plane=fGeom->GetPlane(detector); - - Int_t trackingSector = CookSectorIndex(sector); - - Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(plane,localTimeBin); - if(gtb < 0) continue; - Int_t layer = fTrSec[trackingSector]->GetLayerNumber(gtb); - iCluster[layer] = index; - } - t.ResetClusters(); - - Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); + //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 layer = fGeom->GetLayer(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,layer)) { + if (!t.Update(cl,maxChi2,index,h01)) { + // ???? + } + } // else SetCluster(cl, GetNumberOfClusters()-1); // A.Bercuci 25.07.07 + - Double_t alpha=t.GetAlpha(); - alpha = TVector2::Phi_0_2pi(alpha); +// if (calibra->GetMITracking()) { +// calibra->UpdateHistograms(cl,&t); +// } - Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; - Double_t radLength, rho, x, dx, y, ymax, z; + // Reset material budget if 2 consecutive gold + if (layer > 0) { + if ((t.GetTracklets(layer).GetN() + t.GetTracklets(layer-1).GetN()) > 20) { + t.SetBudget(2,0.0); + } + } + + } - Int_t expectedNumberOfClusters = 0; - Bool_t lookForCluster; + } - alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning + } - - for (Int_t nr=fTrSec[0]->GetLayerNumber(t.GetX()); nr>rf; nr--) { - - y = t.GetY(); z = t.GetZ(); - - // first propagate to the inner surface of the current time bin - fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); - x = fTrSec[s]->GetLayer(nr)->GetX()-dx/2; y = t.GetY(); z = t.GetZ(); - if(!t.PropagateTo(x,radLength,rho)) break; - y = t.GetY(); - ymax = x*TMath::Tan(0.5*alpha); - if (y > ymax) { - s = (s+1) % ns; - if (!t.Rotate(alpha)) break; - if(!t.PropagateTo(x,radLength,rho)) break; - } else if (y <-ymax) { - s = (s-1+ns) % ns; - if (!t.Rotate(-alpha)) break; - if(!t.PropagateTo(x,radLength,rho)) break; - } - - y = t.GetY(); z = t.GetZ(); - - // now propagate to the middle plane of the next time bin - fTrSec[s]->GetLayer(nr-1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); - x = fTrSec[s]->GetLayer(nr-1)->GetX(); y = t.GetY(); z = t.GetZ(); - if(!t.PropagateTo(x,radLength,rho)) break; - y = t.GetY(); - ymax = x*TMath::Tan(0.5*alpha); - if (y > ymax) { - s = (s+1) % ns; - if (!t.Rotate(alpha)) break; - if(!t.PropagateTo(x,radLength,rho)) break; - } else if (y <-ymax) { - s = (s-1+ns) % ns; - if (!t.Rotate(-alpha)) break; - if(!t.PropagateTo(x,radLength,rho)) break; - } - - if(lookForCluster) expectedNumberOfClusters++; - - // use assigned cluster - if (!iCluster[nr-1]) continue; - AliTRDcluster *cl=(AliTRDcluster*)GetCluster(iCluster[nr-1]); - Double_t h01 = GetTiltFactor(cl); - Double_t chi2=t.GetPredictedChi2(cl, h01); - if (cl->GetNPads()<5) t.SetSampledEdx(cl->GetQ()/dx); - - //t.SetSampledEdx(cl->GetQ()/dx,t.GetNumberOfClusters()); - t.Update(cl,chi2,iCluster[nr-1],h01); + 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; -} + return expectedNumberOfClusters; -//___________________________________________________________________ +} -Int_t AliTRDtracker::PropagateToOuterPlane(AliTRDtrack& t, Double_t xToGo) +//_____________________________________________________________________________ +Int_t AliTRDtracker::PropagateToX(AliTRDtrack &t, Double_t xToGo, Double_t maxStep) { - // Starting from current radial position of track this function + // + // 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 + // - Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); - - Double_t alpha=t.GetAlpha(); - - if (alpha > 2.*TMath::Pi()) alpha -= 2.*TMath::Pi(); - if (alpha < 0. ) alpha += 2.*TMath::Pi(); - - Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; - - Bool_t lookForCluster; - Double_t radLength, rho, x, dx, y, ymax, z; - - x = t.GetX(); - - alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning - - Int_t plToGo = fTrSec[0]->GetLayerNumber(xToGo); - - for (Int_t nr=fTrSec[0]->GetLayerNumber(x); nrGetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); - x = fTrSec[s]->GetLayer(nr)->GetX()+dx/2; y = t.GetY(); z = t.GetZ(); - if(!t.PropagateTo(x,radLength,rho)) return 0; - y = t.GetY(); - ymax = x*TMath::Tan(0.5*alpha); - if (y > ymax) { - s = (s+1) % ns; - if (!t.Rotate(alpha)) return 0; - } else if (y <-ymax) { - s = (s-1+ns) % ns; - if (!t.Rotate(-alpha)) return 0; - } - if(!t.PropagateTo(x,radLength,rho)) return 0; - - y = t.GetY(); z = t.GetZ(); + const Double_t kEpsilon = 0.00001; - // now propagate to the middle plane of the next time bin - fTrSec[s]->GetLayer(nr+1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); - x = fTrSec[s]->GetLayer(nr+1)->GetX(); y = t.GetY(); z = t.GetZ(); - if(!t.PropagateTo(x,radLength,rho)) return 0; - y = t.GetY(); - ymax = x*TMath::Tan(0.5*alpha); - if (y > ymax) { - s = (s+1) % ns; - if (!t.Rotate(alpha)) return 0; - } else if (y <-ymax) { - s = (s-1+ns) % ns; - if (!t.Rotate(-alpha)) return 0; - } - if(!t.PropagateTo(x,radLength,rho)) return 0; - } - return 1; -} + // Current track X-position + Double_t xpos = t.GetX(); -//___________________________________________________________________ + // Direction: inward or outward + Double_t dir = (xpos < xToGo) ? 1.0 : -1.0; -Int_t AliTRDtracker::PropagateToTPC(AliTRDtrack& t) -{ - // Starting from current radial position of track this function - // extrapolates the track up to radial position of the outermost - // padrow of the TPC. - // Returns 1 if track reaches the TPC, and 0 otherwise + while (((xToGo - xpos) * dir) > kEpsilon) { - //Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5); + Double_t xyz0[3]; + Double_t xyz1[3]; + Double_t param[7]; + Double_t x; + Double_t y; + Double_t z; - Double_t alpha=t.GetAlpha(); - alpha = TVector2::Phi_0_2pi(alpha); + // The next step size + Double_t step = dir * TMath::Min(TMath::Abs(xToGo-xpos),maxStep); - Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect; + // Get the global position of the starting point + t.GetXYZ(xyz0); - Bool_t lookForCluster; - Double_t radLength, rho, x, dx, y, /*ymax,*/ z; + // X-position after next step + x = xpos + step; - x = t.GetX(); + // Get local Y and Z at the X-position of the next step + if (!t.GetProlongation(x,y,z)) { + return 0; // No prolongation possible + } - alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning - Int_t plTPC = fTrSec[0]->GetLayerNumber(246.055); + // 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; - for (Int_t nr=fTrSec[0]->GetLayerNumber(x); nr>plTPC; nr--) { + // Calculate the mean material budget between start and + // end point of this prolongation step + AliTracker::MeanMaterialBudget(xyz0,xyz1,param); - y = t.GetY(); - z = t.GetZ(); + // Propagate the track to the X-position after the next step + if (!t.PropagateTo(x,param[1],param[0]*param[4])) { + return 0; + } - // first propagate to the outer surface of the current time bin - fTrSec[s]->GetLayer(nr)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); - x = fTrSec[s]->GetLayer(nr)->GetX()-dx/2; - - if(!t.PropagateTo(x,radLength,rho)) return 0; + // Rotate the track if necessary AdjustSector(&t); - if(!t.PropagateTo(x,radLength,rho)) return 0; - y = t.GetY(); - z = t.GetZ(); + // New track X-position + xpos = t.GetX(); + + } - // now propagate to the middle plane of the next time bin - fTrSec[s]->GetLayer(nr-1)->GetPropagationParameters(y,z,dx,rho,radLength,lookForCluster); - x = fTrSec[s]->GetLayer(nr-1)->GetX(); - - if(!t.PropagateTo(x,radLength,rho)) return 0; - AdjustSector(&t); - if(!t.PropagateTo(x,radLength,rho)) return 0; - } 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 - cout<<"\n Read Sectors clusters"<GetEntriesFast(); - fNclusters=ncl; - cout<<"\n LoadSectors: sorting "<GetEntriesFast(); + fNclusters = ncl; + AliInfo(Form("Sorting %d clusters",ncl)); UInt_t index; - for (Int_t ichamber=0;ichamber<5;ichamber++) - for (Int_t isector=0;isector<18;isector++){ - fHoles[ichamber][isector]=kTRUE; - } + 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 layer = fGeom->GetLayer(detector); + Int_t trackingSector = sector; - while (ncl--) { -// printf("\r %d left ",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 = CookSectorIndex(sector); - if (c->GetLabel(0)>0){ - Int_t chamber = fGeom->GetChamber(detector); - fHoles[chamber][trackingSector]=kFALSE; + //if (c->GetQ() > 10) { + // Int_t stack = fGeom->GetStack(detector); + //} + + Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(layer,localTimeBin); + if (gtb < 0) { + continue; } + Int_t trLayer = fTrSec[trackingSector]->GetLayerNumber(gtb); - 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(trLayer)->SetX(c->GetX()); + fTrSec[trackingSector]->GetLayer(trLayer)->InsertCluster(c,index); - index=ncl; - fTrSec[trackingSector]->GetLayer(layer)->InsertCluster(c,index); - } - // printf("\r\n"); - // - // - /* - for (Int_t isector=0;isector<18;isector++){ - for (Int_t ichamber=0;ichamber<5;ichamber++) - if (fHoles[ichamber][isector]!=fGeom->IsHole(0,ichamber,17-isector)) - printf("Problem \t%d\t%d\t%d\t%d\n",isector,ichamber,fHoles[ichamber][isector], - fGeom->IsHole(0,ichamber,17-isector)); } - */ + return 0; + } //_____________________________________________________________________________ @@ -1507,20 +1275,26 @@ void AliTRDtracker::UnloadClusters() // Clears the arrays of clusters and tracks. Resets sectors and timebins // - Int_t i, nentr; + Int_t i; + Int_t nentr; nentr = fClusters->GetEntriesFast(); - for (i = 0; i < nentr; i++) delete fClusters->RemoveAt(i); + 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); + 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 < nentr; i++) { + delete fTracks->RemoveAt(i); + } + Int_t nsec = AliTRDgeometry::kNsector; for (i = 0; i < nsec; i++) { for(Int_t pl = 0; pl < fTrSec[i]->GetNumberOfLayers(); pl++) { fTrSec[i]->GetLayer(pl)->Clear(); @@ -1529,344 +1303,1405 @@ void AliTRDtracker::UnloadClusters() } -//__________________________________________________________________________ -void AliTRDtracker::MakeSeeds(Int_t inner, Int_t outer, Int_t turn) +//_____________________________________________________________________________ +Int_t AliTRDtracker::Clusters2Tracks(AliESDEvent *esd) { - // Creates track seeds using clusters in timeBins=i1,i2 + // + // Creates seeds using clusters between position inner plane and outer plane + // - if(turn > 2) { - cerr<<"MakeSeeds: turn "<GetLayerNumber(inner); - Int_t i1 = fTrSec[0]->GetLayerNumber(outer); - - Double_t x1 =fTrSec[0]->GetX(i1); - Double_t xx2=fTrSec[0]->GetX(i2); - - for (Int_t ns=0; nsGetLayer(i2)); - Int_t nl=(*fTrSec[(ns-1+maxSec)%maxSec]->GetLayer(i2)); - Int_t nm=(*fTrSec[ns]->GetLayer(i2)); - Int_t nu=(*fTrSec[(ns+1)%maxSec]->GetLayer(i2)); - Int_t nu2=(*fTrSec[(ns+2)%maxSec]->GetLayer(i2)); - - AliTRDpropagationLayer& r1=*(fTrSec[ns]->GetLayer(i1)); - - for (Int_t is=0; is < r1; is++) { - Double_t y1=r1[is]->GetY(), z1=r1[is]->GetZ(); - - for (Int_t js=0; js < nl2+nl+nm+nu+nu2; js++) { - - const AliTRDcluster *cl; - Double_t x2, y2, z2; - Double_t x3=0., y3=0.; - - if (jsGetLayer(i2)); - cl=r2[js]; - y2=cl->GetY(); z2=cl->GetZ(); - - x2= xx2*cs2+y2*sn2; - y2=-xx2*sn2+y2*cs2; - } - else if (jsGetLayer(i2)); - cl=r2[js-nl2]; - y2=cl->GetY(); z2=cl->GetZ(); - - x2= xx2*cs+y2*sn; - y2=-xx2*sn+y2*cs; - } - else if (jsGetLayer(i2)); - cl=r2[js-nl2-nl]; - x2=xx2; y2=cl->GetY(); z2=cl->GetZ(); - } - else if (jsGetLayer(i2)); - cl=r2[js-nl2-nl-nm]; - y2=cl->GetY(); z2=cl->GetZ(); - - x2=xx2*cs-y2*sn; - y2=xx2*sn+y2*cs; - } - else { - if(turn != 2) continue; - AliTRDpropagationLayer& r2=*(fTrSec[(ns+2)%maxSec]->GetLayer(i2)); - cl=r2[js-nl2-nl-nm-nu]; - y2=cl->GetY(); z2=cl->GetZ(); - - x2=xx2*cs2-y2*sn2; - y2=xx2*sn2+y2*cs2; - } - - if(TMath::Abs(z1-z2) > fgkMaxSeedDeltaZ12) continue; - - Double_t zz=z1 - z1/x1*(x1-x2); - - if (TMath::Abs(zz-z2)>fgkMaxSeedDeltaZ) continue; - - Double_t d=(x2-x1)*(0.-y2)-(0.-x2)*(y2-y1); - if (d==0.) {cerr<<"TRD MakeSeeds: Straight seed !\n"; continue;} - - x[0]=y1; - x[1]=z1; - x[4]=f1trd(x1,y1,x2,y2,x3,y3); - - if (TMath::Abs(x[4]) > fgkMaxSeedC) continue; - - x[2]=f2trd(x1,y1,x2,y2,x3,y3); - - if (TMath::Abs(x[4]*x1-x[2]) >= 0.99999) continue; - - x[3]=f3trd(x1,y1,x2,y2,z1,z2); - - if (TMath::Abs(x[3]) > fgkMaxSeedTan) continue; - - Double_t a=asin(x[2]); - Double_t zv=z1 - x[3]/x[4]*(a+asin(x[4]*x1-x[2])); - - if (TMath::Abs(zv)>fgkMaxSeedVertexZ) continue; - - Double_t sy1=r1[is]->GetSigmaY2(), sz1=r1[is]->GetSigmaZ2(); - Double_t sy2=cl->GetSigmaY2(), sz2=cl->GetSigmaZ2(); - Double_t sy3=fgkSeedErrorSY3, sy=fgkSeedErrorSY, sz=fgkSeedErrorSZ; - - // Tilt changes - Double_t h01 = GetTiltFactor(r1[is]); - Double_t xuFactor = 100.; - if(fNoTilt) { - h01 = 0; - xuFactor = 1; - } + const Double_t kRoad0y = 6.0; // Road for middle cluster + const Double_t kRoad0z = 8.5; // Road for middle cluster - sy1=sy1+sz1*h01*h01; - Double_t syz=sz1*(-h01); - // end of tilt changes - - Double_t f40=(f1trd(x1,y1+sy,x2,y2,x3,y3)-x[4])/sy; - Double_t f42=(f1trd(x1,y1,x2,y2+sy,x3,y3)-x[4])/sy; - Double_t f43=(f1trd(x1,y1,x2,y2,x3,y3+sy)-x[4])/sy; - Double_t f20=(f2trd(x1,y1+sy,x2,y2,x3,y3)-x[2])/sy; - Double_t f22=(f2trd(x1,y1,x2,y2+sy,x3,y3)-x[2])/sy; - Double_t f23=(f2trd(x1,y1,x2,y2,x3,y3+sy)-x[2])/sy; - Double_t f30=(f3trd(x1,y1+sy,x2,y2,z1,z2)-x[3])/sy; - Double_t f31=(f3trd(x1,y1,x2,y2,z1+sz,z2)-x[3])/sz; - Double_t f32=(f3trd(x1,y1,x2,y2+sy,z1,z2)-x[3])/sy; - Double_t f34=(f3trd(x1,y1,x2,y2,z1,z2+sz)-x[3])/sz; + const Double_t kRoad1y = 2.0; // Road in y for seeded cluster + const Double_t kRoad1z = 20.0; // Road in z for seeded cluster - - c[0]=sy1; - // c[1]=0.; c[2]=sz1; - c[1]=syz; c[2]=sz1*xuFactor; - c[3]=f20*sy1; c[4]=0.; c[5]=f20*sy1*f20+f22*sy2*f22+f23*sy3*f23; - c[6]=f30*sy1; c[7]=f31*sz1; c[8]=f30*sy1*f20+f32*sy2*f22; - c[9]=f30*sy1*f30+f31*sz1*f31+f32*sy2*f32+f34*sz2*f34; - c[10]=f40*sy1; c[11]=0.; c[12]=f40*sy1*f20+f42*sy2*f22+f43*sy3*f23; - c[13]=f30*sy1*f40+f32*sy2*f42; - c[14]=f40*sy1*f40+f42*sy2*f42+f43*sy3*f43; - - UInt_t index=r1.GetIndex(is); - - AliTRDtrack *track=new AliTRDtrack(r1[is],index,x,c,x1,ns*alpha+shift); + 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 rc=FollowProlongation(*track, i2); - - if ((rc < 1) || - (track->GetNumberOfClusters() < - (outer-inner)*fgkMinClustersInSeed)) delete track; - else { - fSeeds->AddLast(track); fNseeds++; -// cerr<<"\r found seed "<GetNumberOfLayers(); ilayer++) { + AliTRDpropagationLayer &propLayer = *(fTrSec[ns]->GetLayer(ilayer)); + if (propLayer == 0) { + continue; + } + Int_t det = propLayer[0]->GetDetector(); + Int_t layer = fGeom->GetLayer(det); + if (ilayer < layers[layer][0]) { + layers[layer][0] = ilayer; + } + if (ilayer > layers[layer][1]) { + layers[layer][1] = ilayer; } } } -} -//_____________________________________________________________________________ -Int_t AliTRDtracker::ReadClusters(TObjArray *array, TTree *ClusterTree) const -{ - // - // Reads AliTRDclusters (option >= 0) or AliTRDrecPoints (option < 0) - // 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) { - Error("ReadClusters","Can't get the branch !"); - return 1; - } - branch->SetAddress(&clusterArray); - - Int_t nEntries = (Int_t) ClusterTree->GetEntries(); - // printf("found %d entries in %s.\n",nEntries,ClusterTree->GetName()); - - // Loop through all entries in the tree - Int_t nbytes = 0; - AliTRDcluster *c = 0; - // printf("\n"); - 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(); -// printf("\r Read %d clusters from entry %d", nCluster, iEntry); - - // Loop through all TRD digits - for (Int_t iCluster = 0; iCluster < nCluster; iCluster++) { - c = (AliTRDcluster*)clusterArray->UncheckedAt(iCluster); - if (c->GetNPads()>3&&(iCluster%3>0)) { - delete clusterArray->RemoveAt(iCluster); - continue; - } - // AliTRDcluster *co = new AliTRDcluster(*c); //remove unnecesary coping - + clusters are together in memory - AliTRDcluster *co = c; - co->SetSigmaY2(c->GetSigmaY2() * fSY2corr); - Int_t ltb = co->GetLocalTimeBin(); - if(ltb == 19) co->SetSigmaZ2(c->GetSigmaZ2()); - else if(fNoTilt) co->SetSigmaZ2(c->GetSigmaZ2() * fSZ2corr); - array->AddLast(co); - // delete clusterArray->RemoveAt(iCluster); - clusterArray->RemoveAt(iCluster); + 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; } } - cout<<"Allocated"<GetEntriesFast()<<"\n"; - delete clusterArray; + // 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]; - return 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]; -//__________________________________________________________________ -void AliTRDtracker::CookLabel(AliKalmanTrack* pt, Float_t wrong) const -{ // - // This cooks a label. Mmmmh, smells good... + // Seeding part // + for (Int_t ns = 0; ns < maxSec; ns++) { // Loop over sectors + //for (Int_t ns = 0; ns < 5; ns++) { // Loop over sectors - Int_t label=123456789, index, i, j; - Int_t ncl=pt->GetNumberOfClusters(); - const Int_t kRange = fTrSec[0]->GetOuterTimeBin()+1; - - Bool_t labelAdded; + registered = 0; // Reset registerd seed counter + cseed = seed[registered]; + Float_t iter = 0.0; - // Int_t s[kRange][2]; - Int_t **s = new Int_t* [kRange]; - for (i=0; i= 0; sLayer--) { + //for (Int_t dseed = 5; dseed < 15; dseed += 3) { - Int_t t0,t1,t2; - for (i=0; iGetClusterIndex(i); - AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index); - t0=c->GetLabel(0); - t1=c->GetLabel(1); - t2=c->GetLabel(2); - } + iter += 1.0; + Int_t dseed = 5 + Int_t(iter) * 3; - for (i=0; iGetClusterIndex(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++; - } + // 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(); } - } - } - Int_t max=0; - label = -123456789; + 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]; - for (i=0; imax) { - max=s[i][1]; label=s[i][0]; - } - } + Int_t maxn3 = layer3; + for (Int_t icl3 = 0; icl3 < maxn3; icl3++) { - for (i=0; iGetSigmaZ2() * 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); - delete []s; + // 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; - if ((1.- Float_t(max)/ncl) > wrong) label=-label; + for (Int_t icl1 = layer1.Find(yymin1); icl1 < maxn1; icl1++) { - pt->SetLabel(label); + 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 (fReconstructor->GetStreamLevel(AliTRDReconstructor::kTracker) > 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 (fReconstructor->GetStreamLevel(AliTRDReconstructor::kTracker) > 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 (fReconstructor->GetStreamLevel(AliTRDReconstructor::kTracker) > 0) { + cstream << "Tracks" + << "EventNrInFile=" << eventNrInFile + << "ESD.=" << &esdtrack + << "trd.=" << track + << "trdback.=" << track + << "\n"; + } + } + + if (fReconstructor->GetStreamLevel(AliTRDReconstructor::kTracker) > 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 = NULL; + 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 istack = fGeom->GetStack(idet); + Int_t ilayer = fGeom->GetLayer(idet); + Double_t local[3]; + local[0] = GetX(isector,ilayer,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 iGeoLayer = AliGeomManager::kTRD1; + switch (ilayer) { + case 0: + iGeoLayer = AliGeomManager::kTRD1; + break; + case 1: + iGeoLayer = AliGeomManager::kTRD2; + break; + case 2: + iGeoLayer = AliGeomManager::kTRD3; + break; + case 3: + iGeoLayer = AliGeomManager::kTRD4; + break; + case 4: + iGeoLayer = AliGeomManager::kTRD5; + break; + case 5: + iGeoLayer = AliGeomManager::kTRD6; + break; + }; + Int_t modId = isector * fGeom->Nstack() + istack; + UShort_t volid = AliGeomManager::LayerToVolUID(iGeoLayer,modId); + p.SetVolumeID(volid); + + return kTRUE; + +} -//__________________________________________________________________ -void AliTRDtracker::UseClusters(const AliKalmanTrack* t, Int_t from) const +//_____________________________________________________________________________ +void AliTRDtracker::CookLabel(AliKalmanTrack *pt, Float_t wrong) const { // - // Use clusters, but don't abuse them! + // This cooks a label. Mmmmh, smells good... // - Int_t ncl=t->GetNumberOfClusters(); - for (Int_t i=from; iGetClusterIndex(i); - AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index); - c->Use(); + 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 ilayer = fGeom->GetLayer(c->GetDetector()); + if (track->GetTracklets(ilayer).GetChi2() > kmaxchi2) { + continue; + } + if (track->GetTracklets(ilayer).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 * 9 /12.; + 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 { // @@ -1875,924 +2710,1246 @@ Double_t AliTRDtracker::GetX(Int_t sector, Int_t plane, Int_t localTB) const // Int_t index = fTrSec[sector]->CookTimeBinIndex(plane, localTB); - Int_t pl = fTrSec[sector]->GetLayerNumber(index); + Int_t pl = fTrSec[sector]->GetLayerNumber(index); + return fTrSec[sector]->GetLayer(pl)->GetX(); } -//_______________________________________________________ -AliTRDtracker::AliTRDpropagationLayer::AliTRDpropagationLayer(Double_t x, - Double_t dx, Double_t rho, Double_t radLength, Int_t tbIndex) -{ +//_____________________________________________________________________________ +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::kNstack]; + for (Int_t istack = 0; istack < AliTRDgeometry::kNstack; istack++) { + holes[istack] = fGeom->IsHole(0,istack,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 kNstacks = AliTRDgeometry::Nstack(); + Int_t tbIndex; + Double_t ymax = 0; + Double_t ymaxsensitive = 0; + Double_t *zc = new Double_t[kNstacks]; + Double_t *zmax = new Double_t[kNstacks]; + Double_t *zmaxsensitive = new Double_t[kNstacks]; + + for (Int_t layer = 0; layer < AliTRDgeometry::Nlayer(); layer++) { + + ymax = fGeom->GetChamberWidth(layer) / 2.0; + padPlane = fGeom->GetPadPlane(layer,0); + ymaxsensitive = (padPlane->GetColSize(1) * padPlane->GetNcols() - 4.0) / 2.0; + + for (Int_t st = 0; st < kNstacks; st++) { + zmax[st] = fGeom->GetChamberLength(layer,st) / 2.0; + Float_t pad = padPlane->GetRowSize(1); + Float_t row0 = fGeom->GetRow0(layer,st,0); + Int_t nPads = fGeom->GetRowMax(layer,st,0); + zmaxsensitive[st] = Float_t(nPads) * pad / 2.0; + zc[st] = -(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(layer); + //Double_t xbottom = x0 - dxDrift; + //Double_t xtop = x0 + dxAmp; + + //temporary !! (A.Bercuci) + Int_t t0 = (Int_t)fCalibration->GetT0Average(AliTRDgeometry::GetDetector(layer, 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(layer,iTime); + ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex,layer); + 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) +{ // - // AliTRDpropagationLayer constructor + // Copy constructor // - fN = 0; fX = x; fdX = dx; fRho = rho; fX0 = radLength; - fClusters = NULL; fIndex = NULL; fTimeBinIndex = tbIndex; +} +//_____________________________________________________________________________ +AliTRDtracker::AliTRDtrackingSector + ::~AliTRDtrackingSector() +{ + // + // Destructor + // - for(Int_t i=0; i < (Int_t) kZones; i++) { - fZc[i]=0; fZmax[i] = 0; + for (Int_t i = 0; i < fN; i++) { + delete fLayers[i]; } - fYmax = 0; +} - if(fTimeBinIndex >= 0) { - fClusters = new AliTRDcluster*[kMaxClusterPerTimeBin]; - fIndex = new UInt_t[kMaxClusterPerTimeBin]; +//_____________________________________________________________________________ +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; } - for (Int_t i=0;i<5;i++) fIsHole[i] = kFALSE; - fHole = kFALSE; - fHoleZc = 0; - fHoleZmax = 0; - fHoleYc = 0; - fHoleYmax = 0; - fHoleRho = 0; - fHoleX0 = 0; + return gtb; } -//_______________________________________________________ -void AliTRDtracker::AliTRDpropagationLayer::SetHole( - Double_t Zmax, Double_t Ymax, Double_t rho, - Double_t radLength, Double_t Yc, Double_t Zc) +//_____________________________________________________________________________ +void AliTRDtracker::AliTRDtrackingSector + ::MapTimeBinLayers() { // - // Sets hole in the layer + // For all sensitive time bins sets corresponding layer index + // in the array fTimeBins // - fHole = kTRUE; - fHoleZc = Zc; - fHoleZmax = Zmax; - fHoleYc = Yc; - fHoleYmax = Ymax; - fHoleRho = rho; - fHoleX0 = radLength; + + 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; + + } + } - -//_______________________________________________________ -AliTRDtracker::AliTRDtrackingSector::AliTRDtrackingSector(AliTRDgeometry* geo, Int_t gs, AliTRDparameter* par) +//_____________________________________________________________________________ +Int_t AliTRDtracker::AliTRDtrackingSector + ::GetLayerNumber(Double_t x) const { + // + // Returns the number of time bin which in radial position is closest to // - // AliTRDtrackingSector Constructor + + 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 // - AliTRDpadPlane *padPlane = 0; + return GetLayerNumber(0); - fGeom = geo; - fPar = par; - fGeomSector = gs; - fTzeroShift = 0.13; - fN = 0; - // - // get holes description from geometry - Bool_t holes[AliTRDgeometry::kNcham]; - //printf("sector\t%d\t",gs); - for (Int_t icham=0; ichamIsHole(0,icham,gs); - //printf("%d",holes[icham]); - } - //printf("\n"); - - for(UInt_t i=0; i < kMaxTimeBinIndex; i++) fTimeBinIndex[i] = -1; +} +//_____________________________________________________________________________ +Int_t AliTRDtracker::AliTRDtrackingSector + ::GetOuterTimeBin() const +{ + // + // Returns number of the outermost SENSITIVE time bin + // - AliTRDpropagationLayer* ppl; + return GetLayerNumber(GetNumberOfTimeBins() - 1); - Double_t x, xin, xout, dx, rho, radLength; - Int_t steps; +} - // set time bins in the gas of the TPC +//_____________________________________________________________________________ +Int_t AliTRDtracker::AliTRDtrackingSector + ::GetNumberOfTimeBins() const +{ + // + // Returns number of SENSITIVE time bins + // - xin = 246.055; xout = 254.055; steps = 20; dx = (xout-xin)/steps; - rho = 0.9e-3; radLength = 28.94; + Int_t tb; + Int_t layer; - for(Int_t i=0; i= 0; tb--) { + layer = GetLayerNumber(tb); + if (layer >= 0) { + break; + } } - // set time bins in the outer field cage vessel + return tb + 1; - dx = 50e-4; xin = xout; xout = xin + dx; rho = 1.71; radLength = 44.77; // Tedlar - ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); - InsertLayer(ppl); +} - dx = 0.02; xin = xout; xout = xin + dx; rho = 1.45; radLength = 44.86; // prepreg - ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); - InsertLayer(ppl); +//_____________________________________________________________________________ +void AliTRDtracker::AliTRDtrackingSector + ::InsertLayer(AliTRDpropagationLayer *pl) +{ + // + // Insert layer in fLayers array. + // Layers are sorted according to X coordinate. + // - dx = 2.; xin = xout; xout = xin + dx; rho = 1.45*0.02; radLength = 41.28; // Nomex - steps = 5; dx = (xout - xin)/steps; - for(Int_t i=0; iGetX()); + memmove(fLayers+i+1,fLayers+i,(fN-i)*sizeof(AliTRDpropagationLayer*)); - // set time bins in CO2 + fLayers[i] = pl; + fN++; - xin = xout; xout = 275.0; - steps = 50; dx = (xout - xin)/steps; - rho = 1.977e-3; radLength = 36.2; - - for(Int_t i=0; iGetX()) { + return 0; } - // set time bins in the outer containment vessel + if (x > fLayers[fN-1]->GetX()) { + return fN; + } - dx = 50e-4; xin = xout; xout = xin + dx; rho = 2.7; radLength = 24.01; // Al - ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); - InsertLayer(ppl); + Int_t b = 0; + Int_t e = fN-1; + Int_t m = (b + e) / 2; - dx = 50e-4; xin = xout; xout = xin + dx; rho = 1.71; radLength = 44.77; // Tedlar - ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); - InsertLayer(ppl); + for (; b < e; m = (b + e) / 2) { + if (x > fLayers[m]->GetX()) { + b = m + 1; + } + else { + e = m; + } + } + + return m; + +} - dx = 0.06; xin = xout; xout = xin + dx; rho = 1.45; radLength = 44.86; // prepreg - ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); - InsertLayer(ppl); +//_____________________________________________________________________________ +Double_t AliTRDtracker::GetTiltFactor(const AliTRDcluster *c) +{ + // + // Returns correction factor for tilted pads geometry + // + + Int_t det = c->GetDetector(); + Int_t layer = fGeom->GetLayer(det); + AliTRDpadPlane *padPlane = fGeom->GetPadPlane(layer,0); + Double_t h01 = TMath::Tan(-TMath::Pi() / 180.0 * padPlane->GetTiltingAngle()); - dx = 3.; xin = xout; xout = xin + dx; rho = 1.45*0.02; radLength = 41.28; // Nomex - steps = 10; dx = (xout - xin)/steps; - for(Int_t i=0; i 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 xtrd = (Double_t) fGeom->Rmin(); + } - // add layers between TPC and TRD (Air temporarily) - xin = xout; xout = xtrd; - steps = 50; dx = (xout - xin)/steps; - rho = 1.2e-3; radLength = 36.66; - - for(Int_t i=0; iGetX(); + Double_t sigmaz = TMath::Sqrt(TMath::Abs(track->GetSigmaZ2())); + Int_t nall = 0; + Int_t nfound = 0; + Double_t h01 = 0.0; + Int_t layer = -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.-snpy)*(1.+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 (layer < 0) { + Int_t det = c->GetDetector(); + layer = fGeom->GetLayer(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]++; - // Double_t alpha=AliTRDgeometry::GetAlpha(); + fHMinZ->Fill(c->GetZ() - z); + if ((c->GetZ() - z) * (c->GetZ() - z) > 2 * (12.0 * sz2)) { + continue; + } + checkPoint[1]++; - // add layers for each of the planes + 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++; - Double_t dxRo = (Double_t) fGeom->CroHght(); // Rohacell - Double_t dxSpace = (Double_t) fGeom->Cspace(); // Spacing between planes - Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region - Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region - Double_t dxRad = (Double_t) fGeom->CraHght(); // Radiator - Double_t dxTEC = dxRad + dxDrift + dxAmp + dxRo; - Double_t dxPlane = dxTEC + dxSpace; + 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; + } + } - Int_t tb, tbIndex; - const Int_t kNchambers = AliTRDgeometry::Ncham(); - Double_t ymax = 0; - //, holeYmax = 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]; - // Double_t holeZmax = 1000.; // the whole sector is missing + 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_t plane = 0; plane < AliTRDgeometry::Nplan(); plane++) { - // - // Radiator - xin = xtrd + plane * dxPlane; xout = xin + dxRad; - steps = 12; dx = (xout - xin)/steps; rho = 0.074; radLength = 40.6; - for(Int_t i=0; iGetChamberWidth(plane)/2.; - // - // Modidified for new pad plane class, 22.04.05 (C.B.) - // ymaxsensitive = (fPar->GetColPadSize(plane)*fPar->GetColMax(plane)-4)/2.; - padPlane = fPar->GetPadPlane(plane,0); - ymaxsensitive = (padPlane->GetColSize(1)*padPlane->GetNcols()-4)/2.; - for(Int_t ch = 0; ch < kNchambers; ch++) { - zmax[ch] = fGeom->GetChamberLength(plane,ch)/2; - // - // Modidified for new pad plane class, 22.04.05 (C.B.) - //Float_t pad = fPar->GetRowPadSize(plane,ch,0); - Float_t pad = padPlane->GetRowSize(1); - Float_t row0 = fPar->GetRow0(plane,ch,0); - Int_t nPads = fPar->GetRowMax(plane,ch,0); - zmaxsensitive[ch] = Float_t(nPads)*pad/2.; - // zc[ch] = (pad * nPads)/2 + row0 - pad/2; - zc[ch] = (pad * nPads)/2 + row0; - //zc[ch] = row0+zmax[ch]-AliTRDgeometry::RpadW(); - - } - - dx = fPar->GetDriftVelocity() - / fPar->GetSamplingFrequency(); - rho = 0.00295 * 0.85; radLength = 11.0; - - Double_t x0 = (Double_t) fPar->GetTime0(plane); - Double_t xbottom = x0 - dxDrift; - Double_t xtop = x0 + dxAmp; - // - // Amplification region - steps = (Int_t) (dxAmp/dx); + for(int iCheckPoint = 0; iCheckPoint<4; iCheckPoint++) { + fHFindCl[iCheckPoint]->Fill(checkPoint[iCheckPoint]); + } - for(tb = 0; tb < steps; tb++) { - x = x0 + tb * dx + dx/2; - tbIndex = CookTimeBinIndex(plane, -tb-1); - ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex); - ppl->SetYmax(ymax,ymaxsensitive); - ppl->SetZ(zc, zmax, zmaxsensitive); - ppl->SetHoles(holes); - InsertLayer(ppl); - } - tbIndex = CookTimeBinIndex(plane, -steps); - x = (x + dx/2 + xtop)/2; - dx = 2*(xtop-x); - ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex); - ppl->SetYmax(ymax,ymaxsensitive); - ppl->SetZ(zc, zmax,zmaxsensitive); - ppl->SetHoles(holes); - InsertLayer(ppl); - - // Drift region - dx = fPar->GetDriftVelocity() - / fPar->GetSamplingFrequency(); - steps = (Int_t) (dxDrift/dx); - - for(tb = 0; tb < steps; tb++) { - x = x0 - tb * dx - dx/2; - tbIndex = CookTimeBinIndex(plane, tb); - - ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex); - ppl->SetYmax(ymax,ymaxsensitive); - ppl->SetZ(zc, zmax, zmaxsensitive); - ppl->SetHoles(holes); - InsertLayer(ppl); - } - tbIndex = CookTimeBinIndex(plane, steps); - x = (x - dx/2 + xbottom)/2; - dx = 2*(x-xbottom); - ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex); - ppl->SetYmax(ymax,ymaxsensitive); - ppl->SetZ(zc, zmax, zmaxsensitive); - ppl->SetHoles(holes); - InsertLayer(ppl); - - // Pad Plane - xin = xtop; dx = 0.025; xout = xin + dx; rho = 1.7; radLength = 33.0; - ppl = new AliTRDpropagationLayer(xin+dx/2,dx,rho,radLength,-1); - ppl->SetYmax(ymax,ymaxsensitive); - ppl->SetZ(zc, zmax,zmax); - ppl->SetHoles(holes); - InsertLayer(ppl); - - // Rohacell - xin = xout; xout = xtrd + (plane + 1) * dxPlane - dxSpace; - steps = 5; dx = (xout - xin)/steps; rho = 0.074; radLength = 40.6; - for(Int_t i=0; iSetYmax(ymax,ymaxsensitive); - ppl->SetZ(zc, zmax,zmax); - ppl->SetHoles(holes); - InsertLayer(ppl); + if (checkPoint[3]) { + if (track->GetSignedPt() > 0) { + fHMinYPos->Fill(minY); + } + else { + fHMinYNeg->Fill(minY); + } + fHMinD->Fill(minD[0],minD[1]); } - // Space between the chambers, air - xin = xout; xout = xtrd + (plane + 1) * dxPlane; - steps = 5; dx = (xout - xin)/steps; rho = 1.29e-3; radLength = 36.66; - for(Int_t i=0; i in plane + // 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; - Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region - Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region - Double_t dx = (Double_t) fPar->GetDriftVelocity() - / fPar->GetSamplingFrequency(); - - Int_t tbAmp = fPar->GetTimeBefore(); - Int_t maxAmp = (Int_t) ((dxAmp+0.000001)/dx); - if(kTRUE) maxAmp = 0; // intentional until we change parameter class - Int_t tbDrift = fPar->GetTimeMax(); - Int_t maxDrift = (Int_t) ((dxDrift+0.000001)/dx); + Int_t changes[kN2]; - Int_t tbPerPlane = TMath::Min(tbAmp,maxAmp) + TMath::Min(tbDrift,maxDrift); + Int_t ngood[kN2]; + Int_t nbad[kN2]; - Int_t gtb = (plane+1) * tbPerPlane - localTB - 1 - TMath::Min(tbAmp,maxAmp); + Double_t meanz[kN2]; + Double_t moffset[kN2]; // Mean offset + Double_t mean[kN2]; // Mean value + Double_t angle[kN2]; // Angle - if((localTB < 0) && - (TMath::Abs(localTB) > TMath::Min(tbAmp,maxAmp))) return -1; - if(localTB >= TMath::Min(tbDrift,maxDrift)) return -1; - - return gtb; + 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; -void AliTRDtracker::AliTRDtrackingSector::MapTimeBinLayers() -{ - // - // For all sensitive time bins sets corresponding layer index - // in the array fTimeBins - // + meanz[it] = 0.0; + moffset[it] = 0.0; // Mean offset + mean[it] = 0.0; // Mean value + angle[it] = 0.0; // Angle - Int_t index; + 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 - for(Int_t i = 0; i < fN; i++) { - index = fLayers[i]->GetTimeBinIndex(); - - // printf("gtb %d -> pl %d -> x %f \n", index, i, fLayers[i]->GetX()); + sigmas[it] = 1.0e5; + tchi2s[it] = 1.0e5; // Chi2s for tracklet - if(index < 0) continue; - if(index >= (Int_t) kMaxTimeBinIndex) { - printf("*** AliTRDtracker::MapTimeBinLayers: \n"); - printf(" index %d exceeds allowed maximum of %d!\n", - index, kMaxTimeBinIndex-1); - continue; - } - fTimeBinIndex[index] = i; } - Double_t x1, dx1, x2, dx2, gap; - - for(Int_t i = 0; i < fN-1; i++) { - x1 = fLayers[i]->GetX(); - dx1 = fLayers[i]->GetdX(); - x2 = fLayers[i+1]->GetX(); - dx2 = fLayers[i+1]->GetdX(); - gap = (x2 - dx2/2) - (x1 + dx1/2); - if(gap < -0.01) { - printf("*** warning: layers %d and %d are overlayed:\n",i,i+1); - printf(" %f + %f + %f > %f\n", x1, dx1/2, dx2/2, x2); + // + // Calculate zmean + // + for (Int_t it = 0; it < t1 - t0; it++) { + if (!cl[0][it]) { + continue; } - if(gap > 0.01) { - printf("*** warning: layers %d and %d have a large gap:\n",i,i+1); - printf(" (%f - %f) - (%f + %f) = %f\n", - x2, dx2/2, x1, dx1, gap); + 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; -Int_t AliTRDtracker::AliTRDtrackingSector::GetLayerNumber(Double_t x) const -{ - // - // Returns the number of time bin which in radial position is closest to - // + 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 + } - if(x >= fLayers[fN-1]->GetX()) return fN-1; - if(x <= fLayers[0]->GetX()) return 0; + // 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; + } + } - Int_t b=0, e=fN-1, m=(b+e)/2; - for (; b 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 // + // Iterative choice of "best path" + // + Int_t label = TMath::Abs(track->GetLabel()); + Int_t bestiter = 0; - return GetLayerNumber(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++) { -Int_t AliTRDtracker::AliTRDtrackingSector::GetOuterTimeBin() const -{ - // - // Returns number of the outermost SENSITIVE time bin - // + if (!cl[best[iter][it]][it]) { + continue; + } - return GetLayerNumber(GetNumberOfTimeBins() - 1); -} + // 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]++; + } -Int_t AliTRDtracker::AliTRDtrackingSector::GetNumberOfTimeBins() const -{ - // - // Returns number of SENSITIVE time bins - // + } - Int_t tb, layer; - for(tb = kMaxTimeBinIndex-1; tb >=0; tb--) { - layer = GetLayerNumber(tb); - if(layer>=0) break; - } - return tb+1; -} + // + // 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++) { -void AliTRDtracker::AliTRDtrackingSector::InsertLayer(AliTRDpropagationLayer* pl) -{ - // - // Insert layer in fLayers array. - // Layers are sorted according to X coordinate. + if (!cl[best[iter][it]][it]) { + continue; + } - if ( fN == ((Int_t) kMaxLayersPerSector)) { - printf("AliTRDtrackingSector::InsertLayer(): Too many layers !\n"); - return; - } - if (fN==0) {fLayers[fN++] = pl; return;} - Int_t i=Find(pl->GetX()); + // 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; + } + } - memmove(fLayers+i+1 ,fLayers+i,(fN-i)*sizeof(AliTRDpropagationLayer*)); - fLayers[i]=pl; fN++; + 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; -Int_t AliTRDtracker::AliTRDtrackingSector::Find(Double_t x) const -{ - // - // Returns index of the propagation layer nearest to X - // + 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; + } - if (x <= fLayers[0]->GetX()) return 0; - if (x > fLayers[fN-1]->GetX()) return fN; - Int_t b=0, e=fN-1, m=(b+e)/2; - for (; b fLayers[m]->GetX()) b=m+1; - else e=m; } - return m; -} -//______________________________________________________ -void AliTRDtracker::AliTRDpropagationLayer::SetZ(Double_t* center, Double_t *w, Double_t *wsensitive ) -{ // - // set centers and the width of sectors - for (Int_t icham=0;icham< AliTRDgeometry::kNcham;icham++){ - fZc[icham] = center[icham]; - fZmax[icham] = w[icham]; - fZmaxSensitive[icham] = wsensitive[icham]; - // printf("chamber\t%d\tzc\t%f\tzmax\t%f\tzsens\t%f\n",icham,fZc[icham],fZmax[icham],fZmaxSensitive[icham]); - } -} -//______________________________________________________ - -void AliTRDtracker::AliTRDpropagationLayer::SetHoles(Bool_t *holes) -{ + // Set clusters // - // set centers and the width of sectors - fHole = kFALSE; - for (Int_t icham=0;icham< AliTRDgeometry::kNcham;icham++){ - fIsHole[icham] = holes[icham]; - if (holes[icham]) fHole = kTRUE; - } -} - + 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 = AliTRDCommonParam::Instance()->GetOmegaTau(AliTRDcalibDB::Instance()->GetVdrift(0,0,0)); + 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; -void AliTRDtracker::AliTRDpropagationLayer::GetPropagationParameters( - Double_t y, Double_t z, Double_t &dx, Double_t &rho, Double_t &radLength, - Bool_t &lookForCluster) const -{ - // - // Returns radial step , density , rad. length , - // and sensitivity in point - // + for (Int_t it = 0; it < t1 - t0; it++) { - Double_t alpha = AliTRDgeometry::GetAlpha(); - Double_t ymax = fX*TMath::Tan(0.5*alpha); + if (!cl[best[bestiter][it]][it]) { + continue; + } + // Set cluster error + ((AliCluster*)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()); + } - dx = fdX; - rho = fRho; - radLength = fX0; - lookForCluster = kFALSE; - Bool_t cross =kFALSE; - // - // - if ( (ymax-TMath::Abs(y))<3.){ //cross material - rho*=40.; - radLength*=40.; - cross=kTRUE; - } - // - // check dead regions in sensitive volume - // - Int_t zone=-1; - for(Int_t ch = 0; ch < (Int_t) kZones; ch++) { - if (TMath::Abs(z - fZc[ch]) > fZmax[ch]) continue; //not in given zone - // - if (TMath::Abs(z - fZc[ch]) < fZmaxSensitive[ch]){ - if (fTimeBinIndex>=0) lookForCluster = !(fIsHole[zone]); - if(TMath::Abs(y) > fYmaxSensitive){ - lookForCluster = kFALSE; - } - if (fIsHole[zone]) { - //if hole - rho = 1.29e-3; - radLength = 36.66; + // 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(); } - }else{ - rho = 2.7; radLength = 24.01; //aluminium in between - } - } - // - if (fTimeBinIndex>=0) return; - // - // - // check hole - if (fHole==kFALSE) return; - // - for(Int_t ch = 0; ch < (Int_t) kZones; ch++) { - if (TMath::Abs(z - fZc[ch]) < fZmax[ch]){ - if (fIsHole[ch]) { - //if hole - rho = 1.29e-3; - radLength = 36.66; - } } - } - return; -} -Int_t AliTRDtracker::AliTRDpropagationLayer::GetZone( Double_t z) const -{ - // - // - if (fTimeBinIndex < 0) return -20; //unknown - Int_t zone=-10; // dead zone - for(Int_t ch = 0; ch < (Int_t) kZones; ch++) { - if(TMath::Abs(z - fZc[ch]) < fZmax[ch]) - zone = ch; - } - return zone; -} + 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(); + } + } -void AliTRDtracker::AliTRDpropagationLayer::InsertCluster(AliTRDcluster* c, - UInt_t index) { + clusters[it+t0] = indexes[best[bestiter][it]][it]; -// Insert cluster in cluster array. -// Clusters are sorted according to Y coordinate. + } - if(fTimeBinIndex < 0) { - printf("*** attempt to insert cluster into non-sensitive time bin!\n"); - return; + // 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(layer); + tracklet.SetSigma2(expectederr); + tracklet.SetChi2(tchi2s[bestiter]); + tracklet.SetMaxPos(maxpos,maxpos4,maxpos5); + track->SetTracklets(layer,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); + } } - if (fN== (Int_t) kMaxClusterPerTimeBin) { - printf("AliTRDpropagationLayer::InsertCluster(): Too many clusters !\n"); - return; + 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 (fReconstructor->GetStreamLevel(AliTRDReconstructor::kTracker) > 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 + << "layer=" << layer // Layer 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"; } - if (fN==0) {fIndex[0]=index; fClusters[fN++]=c; return;} - Int_t i=Find(c->GetY()); - memmove(fClusters+i+1 ,fClusters+i,(fN-i)*sizeof(AliTRDcluster*)); - memmove(fIndex +i+1 ,fIndex +i,(fN-i)*sizeof(UInt_t)); - fIndex[i]=index; fClusters[i]=c; fN++; -} -//______________________________________________________ + return nfound; -Int_t AliTRDtracker::AliTRDpropagationLayer::Find(Double_t y) const { +} -// Returns index of the cluster nearest in Y +//_____________________________________________________________________________ +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 (y <= fClusters[0]->GetY()) return 0; - if (y > fClusters[fN-1]->GetY()) return fN; - Int_t b=0, e=fN-1, m=(b+e)/2; - for (; b fClusters[m]->GetY()) b=m+1; - else e=m; + if (n <= 0) { + return 0; } - return m; -} -//--------------------------------------------------------- + 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; + } -Double_t AliTRDtracker::GetTiltFactor(const AliTRDcluster* c) { -// -// Returns correction factor for tilted pads geometry -// + 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++; + } - AliTRDpadPlane *padPlane = fPar->GetPadPlane(0,0); - Double_t h01 = sin(TMath::Pi() / 180.0 * padPlane->GetTiltingAngle()); - Int_t det = c->GetDetector(); - Int_t plane = fGeom->GetPlane(det); + // Sort according frequency + TMath::Sort(countPos,sindexF,sindexS,kTRUE); - //if((plane == 1) || (plane == 3) || (plane == 5)) h01=-h01; - if((plane == 0) || (plane == 2) || (plane == 4)) h01=-h01; + for (Int_t i = 0; i < countPos; i++) { + outlist[2*i ] = sindexF[sindexS[i]+n]; + outlist[2*i+1] = sindexF[sindexS[i]]; + } - if(fNoTilt) h01 = 0; + delete [] sindexS; + delete [] sindexF; - return h01; -} + return countPos; +} -void AliTRDtracker::CookdEdxTimBin(AliTRDtrack& TRDtrack) -{ - // *** ADDED TO GET MORE INFORMATION FOR TRD PID ---- PS - // This is setting fdEdxPlane and fTimBinPlane - // Sums up the charge in each plane for track TRDtrack and also get the - // Time bin for Max. Cluster - // Prashant Shukla (shukla@physi.uni-heidelberg.de) - - // const Int_t kNPlane = AliTRDgeometry::Nplan(); - // const Int_t kNPlane = 6; - Double_t clscharge[kNPlane], maxclscharge[kNPlane]; - Int_t nCluster[kNPlane], timebin[kNPlane]; - - //Initialization of cluster charge per plane. - for (Int_t iPlane = 0; iPlane < kNPlane; iPlane++) { - clscharge[iPlane] = 0.0; - nCluster[iPlane] = 0; - timebin[iPlane] = -1; - maxclscharge[iPlane] = 0.0; - } - - // Loop through all clusters associated to track TRDtrack - Int_t nClus = TRDtrack.GetNumberOfClusters(); // from Kalmantrack - for (Int_t iClus = 0; iClus < nClus; iClus++) { - Double_t charge = TRDtrack.GetClusterdQdl(iClus); - Int_t index = TRDtrack.GetClusterIndex(iClus); - AliTRDcluster *TRDcluster = (AliTRDcluster *) GetCluster(index); - if (!TRDcluster) continue; - Int_t tb = TRDcluster->GetLocalTimeBin(); - if (!tb) continue; - Int_t detector = TRDcluster->GetDetector(); - Int_t iPlane = fGeom->GetPlane(detector); - clscharge[iPlane] = clscharge[iPlane]+charge; - if(charge > maxclscharge[iPlane]) { - maxclscharge[iPlane] = charge; - timebin[iPlane] = tb; - } - nCluster[iPlane]++; - } // end of loop over cluster - - // Setting the fdEdxPlane and fTimBinPlane variabales - Double_t Total_ch = 0; - for (Int_t iPlane = 0; iPlane < kNPlane; iPlane++) { - // Quality control of TRD track. - if (nCluster[iPlane]<= 5) { - clscharge[iPlane]=0.0; - timebin[iPlane]=-1; - } - if (nCluster[iPlane]) clscharge[iPlane] /= nCluster[iPlane]; - TRDtrack.SetPIDsignals(clscharge[iPlane], iPlane); - TRDtrack.SetPIDTimBin(timebin[iPlane], iPlane); - Total_ch= Total_ch+clscharge[iPlane]; - } - // Int_t i; - // Int_t nc=TRDtrack.GetNumberOfClusters(); - // Float_t dedx=0; - // for (i=0; iGetX(); - Double_t sy2=ExpectedSigmaY2(x0,track->GetTgl(),track->GetPt()); - Double_t sz2=ExpectedSigmaZ2(x0,track->GetTgl()); - Double_t road = 10.*sqrt(track->GetSigmaY2() + sy2); - Int_t nall=0; - Int_t nfound=0; - - for (Int_t it=t0;itGetLayer(it)); - if (timeBin==0) continue; // no indexes1 - Int_t maxn = timeBin; - x[it] = timeBin.GetX(); - Double_t y,z; - if (!track->GetProlongation(x[it],y,z)) continue; - yt[it]=y; - zt[it]=z; - Double_t chi2 =1000000; - nall++; - // - // find nearest cluster at given pad - for (Int_t i=timeBin.Find(y-road); iGetY() > y+road) break; - if (c->IsUsed() > 0) continue; - if((c->GetZ()-z)*(c->GetZ()-z) > 3 * sz2) continue; - chi2=track->GetPredictedChi2(c,h01); - if (chi2 > maxChi2) continue; - maxChi2=chi2; - cl[0][it]=c; - indexes[0][it] =timeBin.GetIndex(i); - } - // - // find nearest cluster also in adjacent 2 pads - // - for (Int_t i=timeBin.Find(y-road); iGetY() > y+road) break; - if (c->IsUsed() > 0) continue; - if((c->GetZ()-z)*(c->GetZ()-z) > 12 * sz2) continue; - chi2=track->GetPredictedChi2(c,h01); - if (chi2 > maxChi2) continue; - maxChi2=chi2; - cl[1][it]=c; - indexes[1][it]=timeBin.GetIndex(i); - if (!cl[0][it]) { - cl[0][it]=c; - indexes[0][it]=timeBin.GetIndex(i); - } - } - if (cl[0][it]||cl[1][it]) nfound++; - } - // - if (nfound<5) return 0; + // Parameters : + // seeds : array of tracklets + // params : track parameters (see MakeSeeds() function body for a detailed description) // - // choose one of the variants + // Output : + // The TRD track. // - Int_t changes[2]={0,0}; - Float_t sigmay[2]={1000,1000}; - Float_t meany[2] ={1000,1000}; - Float_t meanz[2] ={1000,1000}; - Int_t sumall[2] ={0,0}; - Int_t ngood[2] ={0,0}; - Int_t nbad[2] ={0,0}; + // Detailed description // + // To be discussed with Marian !! // - for (Int_t ih=0; ih<2;ih++){ - Float_t lastz =-10000; - Float_t sumz =0; - Float_t sum =0; - Double_t sumdy = 0; - Double_t sumdy2= 0; - // - // how many changes ++ mean z ++mean y ++ sigma y - for (Int_t it=t0;itGetZ(); - if (TMath::Abs(lastz-cl[ih][it]->GetZ())>1) { - lastz = cl[ih][it]->GetZ(); - changes[ih]++; - } - sumz = cl[ih][it]->GetZ(); - sum++; - Double_t h01 = GetTiltFactor(cl[ih][it]); - dz[it] = cl[ih][it]->GetZ()- zt[it]; - dy[it] = cl[ih][it]->GetY()+ dz[it]*h01 -yt[it]; - sum++; - sumdy += dy[it]; - sumdy2+= dy[it]*dy[it]; - Int_t label = TMath::Abs(track->GetLabel()); - if (cl[ih][it]->GetLabel(0)==label || cl[ih][it]->GetLabel(1)==label||cl[ih][it]->GetLabel(2)==label){ - ngood[ih]++; - } - else{ - nbad[ih]++; + + 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 (sumall[ih]>4){ - meanz[ih] = sumz/sum; - meany[ih] = sumdy/sum; - sigmay[ih] = TMath::Sqrt(sumdy2/sum-meany[ih]*meany[ih]); + if (index > 0) { + break; } } - Int_t best =0; - /* - if (sumall[0]quality1){ - best = 1; + 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() +{ // - for (Int_t it=t0;itGetZ()- zt[it]; - dy[it] = cl[best][it]->GetY()+ dz[it]*h01 -yt[it]; - // - if (TMath::Abs(dy[it])<2.5*sigmay[best]) - clusters[it] = indexes[best][it]; - } - - if (nbad[0]>4){ - nbad[0] = nfound; + // 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); } - return nfound; + } +//_____________________________________________________________________________ +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(); +}