///////////////////////////////////////////////////////////////////////////////
// //
-// The standard TRD tracker //
+// The standard TRD tracker //
+// Based on Kalman filltering approach //
+// //
+// Authors: //
+// M. Ivanov (Marian.Ivanov@cern.ch) //
// //
///////////////////////////////////////////////////////////////////////////////
-#include <Riostream.h>
-#include <TFile.h>
#include <TBranch.h>
-#include <TTree.h>
+#include <TFile.h>
+#include <TGraph.h>
+#include <TLinearFitter.h>
#include <TObjArray.h>
+#include <TROOT.h>
+#include <TTree.h>
+#include <TTreeStream.h>
+
+#include "AliESDEvent.h"
+#include "AliESDtrack.h"
+#include "AliAlignObj.h"
+#include "AliRieman.h"
+#include "AliTrackPointArray.h"
#include "AliTRDgeometry.h"
-#include "AliTRDparameter.h"
-#include "AliTRDgeometryDetail.h"
-#include "AliTRDgeometryHole.h"
+#include "AliTRDpadPlane.h"
+#include "AliTRDgeometry.h"
#include "AliTRDcluster.h"
#include "AliTRDtrack.h"
-#include "AliTRDPartID.h"
-#include "../TPC/AliTPCtrack.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)
-{
- for(Int_t i=0;i<kTrackingSectors;i++) fTrSec[i]=0;
- for(Int_t j=0;j<5;j++)
- for(Int_t k=0;k<18;k++) fHoles[j][k]=kFALSE;
-}
-//____________________________________________________________________
-AliTRDtracker::AliTRDtracker(const TFile *geomfile):AliTracker()
+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(0x0)
+ ,fHClSearch(0x0)
+ ,fHRefit(0x0)
+ ,fHX(0x0)
+ ,fHNCl(0x0)
+ ,fHNClTrack(0x0)
+ ,fHMinYPos(0x0)
+ ,fHMinYNeg(0x0)
+ ,fHMinZ(0x0)
+ ,fHMinD(0x0)
+ ,fHDeltaX(0x0)
+ ,fHXCl(0x0)
+ ,fDebugStreamer(0)
{
- //
- // Main constructor
- //
+ //
+ // Default constructor
+ //
- //Float_t fTzero = 0;
-
- fAddTRDseeds = kFALSE;
- fGeom = NULL;
- fNoTilt = kFALSE;
-
- TDirectory *savedir=gDirectory;
- TFile *in=(TFile*)geomfile;
- if (!in->IsOpen()) {
- printf("AliTRDtracker::AliTRDtracker(): geometry file is not open!\n");
- printf(" DETAIL TRD geometry and DEFAULT TRD parameter will be used\n");
+ for (Int_t i = 0; i < kTrackingSectors; i++) {
+ fTrSec[i] = 0;
}
- 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 AliTRDgeometryHole();
- 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->ReInit();
+ InitLogHists();
- savedir->cd();
+}
+//_____________________________________________________________________________
+AliTRDtracker::AliTRDtracker(const AliTRDtracker &t)
+ :AliTracker(t)
+ ,fReconstructor(t.fReconstructor)
+ ,fGeom(0)
+ ,fNclusters(0)
+ ,fClusters(0)
+ ,fNseeds(0)
+ ,fSeeds(0)
+ ,fNtracks(0)
+ ,fTracks(0)
+ ,fTimeBinsPerPlane(0)
+ ,fAddTRDseeds(kFALSE)
+ ,fNoTilt(kFALSE)
+ ,fHBackfit(0x0)
+ ,fHClSearch(0x0)
+ ,fHRefit(0x0)
+ ,fHX(0x0)
+ ,fHNCl(0x0)
+ ,fHNClTrack(0x0)
+ ,fHMinYPos(0x0)
+ ,fHMinYNeg(0x0)
+ ,fHMinZ(0x0)
+ ,fHMinD(0x0)
+ ,fHDeltaX(0x0)
+ ,fHXCl(0x0)
+ ,fDebugStreamer(0)
+{
+ //
+ // Copy constructor
+ //
- // fGeom->SetT0(fTzero);
+}
- fNclusters = 0;
- fClusters = new TObjArray(2000);
- fNseeds = 0;
- fSeeds = new TObjArray(2000);
- fNtracks = 0;
- fTracks = new TObjArray(1000);
+//_____________________________________________________________________________
+AliTRDtracker::AliTRDtracker(const TFile */*geomfile*/, AliTRDReconstructor *rec)
+ :AliTracker()
+ ,fReconstructor(rec)
+ ,fGeom(0)
+ ,fNclusters(0)
+ ,fClusters(new TObjArray(2000))
+ ,fNseeds(0)
+ ,fSeeds(new TObjArray(2000))
+ ,fNtracks(0)
+ ,fTracks(new TObjArray(1000))
+ ,fTimeBinsPerPlane(0)
+ ,fAddTRDseeds(kFALSE)
+ ,fNoTilt(kFALSE)
+ ,fHBackfit(0x0)
+ ,fHClSearch(0x0)
+ ,fHRefit(0x0)
+ ,fHX(0x0)
+ ,fHNCl(0x0)
+ ,fHNClTrack(0x0)
+ ,fHMinYPos(0x0)
+ ,fHMinYNeg(0x0)
+ ,fHMinZ(0x0)
+ ,fHMinD(0x0)
+ ,fHDeltaX(0x0)
+ ,fHXCl(0x0)
+ ,fDebugStreamer(0)
+{
+ //
+ // Main constructor
+ //
+
+ TDirectory *savedir = gDirectory;
- 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;icham<AliTRDgeometry::kNcham; icham++){
- fHoles[icham][trS]=fGeom->IsHole(0,icham,geomS);
- }
+ fGeom = new AliTRDgeometry();
+
+ for (Int_t geomS = 0; geomS < kTrackingSectors; geomS++) {
+ Int_t trS = geomS;
+ fTrSec[trS] = new AliTRDtrackingSector(fGeom,geomS);
}
- Float_t tiltAngle = TMath::Abs(fPar->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->GetTimeBinSize();
- 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);
-
- fVocal = kFALSE;
-
-
- // Barrel Tracks [SR, 03.04.2003]
+ if (!AliTRDcalibDB::Instance()) {
+ AliFatal("Could not get calibration object");
+ }
+ fTimeBinsPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
- fBarrelFile = 0;
- fBarrelTree = 0;
- fBarrelArray = 0;
- fBarrelTrack = 0;
+ fDebugStreamer = new TTreeSRedirector("TRDdebug.root");
savedir->cd();
+
+ InitLogHists();
+
}
-//___________________________________________________________________
+//_____________________________________________________________________________
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;
+ }
-void AliTRDtracker::SetBarrelTree(const char *mode) {
- //
- //
+}
+
+//_____________________________________________________________________________
+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;
- if (!IsStoringBarrel()) return;
+}
- TDirectory *sav = gDirectory;
- if (!fBarrelFile) fBarrelFile = new TFile("AliBarrelTracks.root", "UPDATE");
+//_____________________________________________________________________________
+Int_t AliTRDtracker::GlobalToLocalID(Int_t gid)
+{
+ //
+ // Transform global detector ID to local detector ID
+ //
- char buff[40];
- sprintf(buff, "BarrelTRD_%d_%s", GetEventNumber(), mode);
+ Int_t modId = 0;
+ AliGeomManager::ELayerID layerId = AliGeomManager::VolUIDToLayer(gid,modId);
- fBarrelFile->cd();
- fBarrelTree = new TTree(buff, "Barrel TPC tracks");
-
- Int_t nRefs = fgkLastPlane - fgkFirstPlane + 1;
+ Int_t isector = modId / fGeom->Nstack();
+ Int_t istack = modId % fGeom->Nstack();
+ Int_t iLayer = -1;
- if (!fBarrelArray) fBarrelArray = new TClonesArray("AliBarrelTrack", nRefs);
- for(Int_t i=0; i<nRefs; i++) new((*fBarrelArray)[i]) AliBarrelTrack();
-
- fBarrelTree->Branch("tracks", &fBarrelArray);
- sav->cd();
-}
-
-//_____________________________________________________________________
+ 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;
+ }
-void AliTRDtracker::StoreBarrelTrack(AliTRDtrack *ps, Int_t refPlane, Int_t isIn) {
- //
- //
- //
-
- if (!IsStoringBarrel()) return;
-
- static Int_t nClusters;
- static Int_t nWrong;
- static Double_t chi2;
- static Int_t index;
- static Bool_t wasLast = kTRUE;
-
- Int_t newClusters, newWrong;
- Double_t newChi2;
-
- if (wasLast) {
-
- fBarrelArray->Clear();
- nClusters = nWrong = 0;
- chi2 = 0.0;
- index = 0;
- wasLast = kFALSE;
+ if (iLayer < 0) {
+ return -1;
}
-
- fBarrelTrack = (AliBarrelTrack*)(*fBarrelArray)[index++];
- ps->GetBarrelTrack(fBarrelTrack);
-
- newClusters = ps->GetNumberOfClusters() - nClusters;
- newWrong = ps->GetNWrong() - nWrong;
- newChi2 = ps->GetChi2() - chi2;
-
- nClusters = ps->GetNumberOfClusters();
- nWrong = ps->GetNWrong();
- chi2 = ps->GetChi2();
-
- if (refPlane != fgkLastPlane) {
- fBarrelTrack->SetNClusters(newClusters, newChi2);
- fBarrelTrack->SetNWrongClusters(newWrong);
- } else {
- wasLast = kTRUE;
- }
- fBarrelTrack->SetRefPlane(refPlane, isIn);
-}
+ Int_t lid = fGeom->GetDetector(iLayer,istack,isector);
-//_____________________________________________________________________
+ return lid;
-Bool_t AliTRDtracker::AdjustSector(AliTRDtrack *track) {
+}
+
+//_____________________________________________________________________________
+Bool_t AliTRDtracker::AdjustSector(AliTRDtrack *track)
+{
//
// Rotates the track when necessary
//
Double_t alpha = AliTRDgeometry::GetAlpha();
- Double_t y = track->GetY();
- Double_t ymax = track->GetX()*TMath::Tan(0.5*alpha);
-
- //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;
+ Double_t y = track->GetY();
+ Double_t ymax = track->GetX()*TMath::Tan(0.5*alpha);
+
+ if (y > ymax) {
+ if (!track->Rotate( alpha)) {
+ return kFALSE;
+ }
+ }
+ else if (y < -ymax) {
+ if (!track->Rotate(-alpha)) {
+ return kFALSE;
+ }
}
return kTRUE;
+
}
-//_____________________________________________________________________
-inline Double_t f1trd(Double_t x1,Double_t y1,
- Double_t x2,Double_t y2,
- Double_t x3,Double_t y3)
+//_____________________________________________________________________________
+AliTRDcluster *AliTRDtracker::GetCluster(AliTRDtrack *track, Int_t plane
+ , Int_t timebin, UInt_t &index)
{
//
- // Initial approximation of the track curvature
+ // Try to find cluster in the backup list
//
- 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 xr=TMath::Abs(d/(d*x1-a)), yr=d/(d*y1-b);
-
- 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)
-{
- //
- // Initial approximation of the track curvature times X coordinate
- // of the center of curvature
- //
+ AliTRDcluster *cl =0;
+ Int_t *indexes = track->GetBackupIndexes();
- 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));
+ 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;
+ }
+ }
- Double_t xr=TMath::Abs(d/(d*x1-a)), yr=d/(d*y1-b);
+ return cl;
- 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)
+//_____________________________________________________________________________
+Int_t AliTRDtracker::GetLastPlane(AliTRDtrack *track)
{
//
- // Initial approximation of the tangent of the track dip angle
+ // Return last updated plane
//
- return (z1 - z2)/sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2));
-}
+ Int_t lastplane = 0;
+ 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;i<kMaxTimeBinIndex;i++){
- if (indexes[i]==0) break;
- AliTRDcluster * cli = (AliTRDcluster*)fClusters->UncheckedAt(indexes[i]);
- if (!cli) break;
- if (cli->GetLocalTimeBin()!=timebin) continue;
- Int_t iplane = fGeom->GetPlane(cli->GetDetector());
- if (iplane==plane) {
- cl = cli;
+ for (UInt_t i = 0; i < kMaxTimeBinIndex; i++) {
+ AliTRDcluster *cli = (AliTRDcluster *) fClusters->UncheckedAt(indexes[i]);
+ if (!cli) {
break;
}
- }
- 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;i<kMaxTimeBinIndex;i++){
- AliTRDcluster * cli = (AliTRDcluster*)fClusters->UncheckedAt(indexes[i]);
- if (!cli) break;
- Int_t iplane = fGeom->GetPlane(cli->GetDetector());
- if (iplane>lastplane) {
- lastplane = iplane;
+ Int_t ilayer = fGeom->GetLayer(cli->GetDetector());
+ if (ilayer > lastplane) {
+ lastplane = ilayer;
}
}
+
return lastplane;
+
}
-//___________________________________________________________________
-Int_t AliTRDtracker::Clusters2Tracks(const TFile *inp, TFile *out)
+
+//_____________________________________________________________________________
+Int_t AliTRDtracker::PropagateBack(AliESDEvent *event)
{
//
- // Finds tracks within the TRD. File <inp> is expected to contain seeds
- // at the outer part of the TRD. If <inp> is NULL, the seeds
- // are found within the TRD if fAddTRDseeds is TRUE.
- // The tracks are propagated to the innermost time bin
- // of the TRD and stored in file <out>.
- //
-
- LoadEvent();
-
- TDirectory *savedir=gDirectory;
-
- char tname[100];
-
- if (!out->IsOpen()) {
- cerr<<"AliTRDtracker::Clusters2Tracks(): output file is not open !\n";
- return 1;
- }
-
- sprintf(tname,"seedTRDtoTPC_%d",GetEventNumber());
- TTree tpcTree(tname,"Tree with seeds from TRD at outer TPC pad row");
- AliTPCtrack *iotrack=0;
- tpcTree.Branch("tracks","AliTPCtrack",&iotrack,32000,0);
-
- sprintf(tname,"TreeT%d_TRD",GetEventNumber());
- TTree trdTree(tname,"TRD tracks at inner TRD time bin");
- AliTRDtrack *iotrackTRD=0;
- trdTree.Branch("tracks","AliTRDtrack",&iotrackTRD,32000,0);
-
- Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins();
- Float_t foundMin = fgkMinClustersInTrack * timeBins;
-
- if (inp) {
- TFile *in=(TFile*)inp;
- if (!in->IsOpen()) {
- cerr<<
- "AliTRDtracker::Clusters2Tracks(): file with seeds is not open !\n";
- cerr<<" ... going for seeds finding inside the TRD\n";
- }
- else {
- in->cd();
- sprintf(tname,"TRDb_%d",GetEventNumber());
- TTree *seedTree=(TTree*)in->Get(tname);
- if (!seedTree) {
- cerr<<"AliTRDtracker::Clusters2Tracks(): ";
- cerr<<"can't get a tree with track seeds !\n";
- return 3;
- }
- AliTRDtrack *seed=new AliTRDtrack;
- seedTree->SetBranchAddress("tracks",&seed);
-
- Int_t n=(Int_t)seedTree->GetEntries();
- for (Int_t i=0; i<n; i++) {
- seedTree->GetEvent(i);
- seed->ResetCovariance();
- AliTRDtrack *tr = new AliTRDtrack(*seed,seed->GetAlpha());
- fSeeds->AddLast(tr);
- fNseeds++;
- }
- delete seed;
- delete seedTree;
- }
- }
-
- out->cd();
-
-
- // find tracks from loaded seeds
-
- Int_t nseed=fSeeds->GetEntriesFast();
- Int_t i, found = 0;
- Int_t innerTB = fTrSec[0]->GetInnerTimeBin();
-
- for (i=0; i<nseed; i++) {
- AliTRDtrack *pt=(AliTRDtrack*)fSeeds->UncheckedAt(i), &t=*pt;
- FollowProlongation(t, innerTB);
- if (t.GetNumberOfClusters() >= foundMin) {
- UseClusters(&t);
- CookLabel(pt, 1-fgkLabelFraction);
- // t.CookdEdx();
- }
- iotrackTRD = pt;
- trdTree.Fill();
- found++;
-// cout<<found<<'\r';
-
- if(PropagateToTPC(t)) {
- AliTPCtrack *tpc = new AliTPCtrack(*pt,pt->GetAlpha());
- iotrack = tpc;
- tpcTree.Fill();
- delete tpc;
- }
- delete fSeeds->RemoveAt(i);
- fNseeds--;
- }
-
- cout<<"Number of loaded seeds: "<<nseed<<endl;
- cout<<"Number of found tracks from loaded seeds: "<<found<<endl;
-
- // after tracks from loaded seeds are found and the corresponding
- // clusters are used, look for additional seeds from TRD
+ // Gets seeds from ESD event. The seeds are AliTPCtrack's found and
+ // backpropagated by the TPC tracker. Each seed is first propagated
+ // to the TRD, and then its prolongation is searched in the TRD.
+ // If sufficiently long continuation of the track is found in the TRD
+ // the track is updated, otherwise it's stored as originaly defined
+ // by the TPC tracker.
+ //
- if(fAddTRDseeds) {
- // Find tracks for the seeds in the TRD
- Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins();
-
- Int_t nSteps = (Int_t) (fgkSeedDepth / fgkSeedStep);
- Int_t gap = (Int_t) (timeBins * fgkSeedGap);
- Int_t step = (Int_t) (timeBins * fgkSeedStep);
+ Int_t found = 0; // number of tracks found
+ Float_t foundMin = 20.0;
+
+ Int_t nSeed = event->GetNumberOfTracks();
+ if(!nSeed){
+ // run stand alone tracking
+ if (fReconstructor->IsSeeding()) Clusters2Tracks(event);
+ return 0;
+ }
+
+ Float_t *quality = new Float_t[nSeed];
+ Int_t *index = new Int_t[nSeed];
+ for (Int_t iSeed = 0; iSeed < nSeed; iSeed++) {
+ AliESDtrack *seed = event->GetTrack(iSeed);
+ Double_t covariance[15];
+ seed->GetExternalCovariance(covariance);
+ quality[iSeed] = covariance[0] + covariance[2];
+ }
+ // Sort tracks according to covariance of local Y and Z
+ TMath::Sort(nSeed,quality,index,kFALSE);
+
+ // Backpropagate all seeds
+ for (Int_t iSeed = 0; iSeed < nSeed; iSeed++) {
+
+ // Get the seeds in sorted sequence
+ AliESDtrack *seed = event->GetTrack(index[iSeed]);
+ fHBackfit->Fill(0); // All seeds
+
+ // Check the seed status
+ ULong_t status = seed->GetStatus();
+ if ((status & AliESDtrack::kTPCout) == 0) {
+ fHBackfit->Fill(1); // TPC outer edge reached
+ continue;
+ }
+ if ((status & AliESDtrack::kTRDout) != 0) {
+ fHBackfit->Fill(2); // TRD outer edge reached (does this happen ?)
+ continue;
+ }
+
+ // Do the back prolongation
+ Int_t lbl = seed->GetLabel();
+ AliTRDtrack *track = new AliTRDtrack(*seed);
+ track->SetSeedLabel(lbl);
+ seed->UpdateTrackParams(track,AliESDtrack::kTRDbackup); // Make backup
+ fNseeds++;
+ Float_t p4 = track->GetC();
+ Int_t expectedClr = FollowBackProlongation(*track);
+ fHBackfit->Fill(3); // Back prolongation done
+ fHX->Fill(track->GetX());
+
+ if ((TMath::Abs(track->GetC() - p4) / TMath::Abs(p4) < 0.2) ||
+ (track->Pt() > 0.8)) {
+
+ fHBackfit->Fill(4);
+
+ //
+ // Make backup for back propagation
+ //
+
+ Int_t foundClr = track->GetNumberOfClusters();
+ if (foundClr >= foundMin) {
+ track->CookdEdx();
+ track->CookdEdxTimBin(seed->GetID()); // A.Bercuci 25.07.07
+ CookLabel(track,1 - fgkLabelFraction);
+ if (track->GetBackupTrack()) UseClusters(track->GetBackupTrack());
+
+
+ // Sign only gold tracks
+ if (track->GetChi2() / track->GetNumberOfClusters() < 4) {
+ if ((seed->GetKinkIndex(0) == 0) &&
+ (track->Pt() < 1.5)) {
+ UseClusters(track);
+ }
+ }
+ Bool_t isGold = kFALSE;
+
+ // Full gold track
+ if (track->GetChi2() / track->GetNumberOfClusters() < 5) {
+ //seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup);
+ if (track->GetBackupTrack()) {
+ seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup);
+ }
+ isGold = kTRUE;
+ //fHBackfit->Fill()
+ }
+
+ // Almost gold track
+ if ((!isGold) && (track->GetNCross() == 0) &&
+ (track->GetChi2() / track->GetNumberOfClusters() < 7)) {
+ //seed->UpdateTrackParams(track, AliESDtrack::kTRDbackup);
+ if (track->GetBackupTrack()) {
+ seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup);
+ }
+ isGold = kTRUE;
+ }
+
+ if ((!isGold) && (track->GetBackupTrack())) {
+ if ((track->GetBackupTrack()->GetNumberOfClusters() > foundMin) && ((track->GetBackupTrack()->GetChi2()/(track->GetBackupTrack()->GetNumberOfClusters()+1)) < 7)) {
+ seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup);
+ isGold = kTRUE;
+ }
+ }
+
+ if ((track->StatusForTOF() > 0) && (track->GetNCross() == 0) && (Float_t(track->GetNumberOfClusters()) / Float_t(track->GetNExpected()) > 0.4)) {
+ //seed->UpdateTrackParams(track->GetBackupTrack(), AliESDtrack::kTRDbackup);
+ }
+ }
+ }
+ /**/
+
+ /**/
+ // Debug part of tracking
+ TTreeSRedirector &cstream = *fDebugStreamer;
+ Int_t eventNrInFile = event->GetEventNumberInFile(); // This is most likely NOT the event number you'd like to use. It has nothing to do with the 'real' event number.
+ if (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(AliTRDtrack::kNslice);
+ for (Int_t i = 0; i < AliTRDtrack::kNplane; i++) {
+ for (Int_t j = 0; j < AliTRDtrack::kNslice; j++) {
+ seed->SetTRDslice(track->GetPIDsignals(i,j),i,j);
+ }
+ seed->SetTRDTimBin(track->GetPIDTimBin(i),i);
+ }
+ //seed->SetTRDtrack(new AliTRDtrack(*track));
+ if (track->GetNumberOfClusters() > foundMin) {
+ fHBackfit->Fill(11);
+ found++;
+ }
+ }
+ }
+ else {
+ fHBackfit->Fill(12);
+
+ if ((track->GetNumberOfClusters() > 15) &&
+ (track->GetNumberOfClusters() > 0.5*expectedClr)) {
+ seed->UpdateTrackParams(track,AliESDtrack::kTRDout);
+ fHBackfit->Fill(13);
+
+ //seed->SetStatus(AliESDtrack::kTRDStop);
+
+ seed->SetNumberOfTRDslices(AliTRDtrack::kNslice);
+ for (Int_t i = 0; i < AliTRDtrack::kNplane; i++) {
+ for (Int_t j = 0; j <AliTRDtrack::kNslice; j++) {
+ seed->SetTRDslice(track->GetPIDsignals(i,j),i,j);
+ }
+ seed->SetTRDTimBin(track->GetPIDTimBin(i),i);
+ }
+ //seed->SetTRDtrack(new AliTRDtrack(*track));
+ found++;
+ }
+ }
+
+ seed->SetTRDQuality(track->StatusForTOF());
+ seed->SetTRDBudget(track->GetBudget(0));
+
+ fHBackfit->Fill(14);
+ delete track;
+ }
+
+ AliInfo(Form("Number of seeds: %d",fNseeds));
+ AliInfo(Form("Number of back propagated TRD tracks: %d",found));
+
+ fSeeds->Clear();
+ fNseeds = 0;
+
+ delete [] index;
+ delete [] quality;
+
+ SaveLogHists();
- // 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; i<nSteps; i++) {
- Int_t outer=timeBins-1-i*step;
- Int_t inner=outer-gap;
+ return 0;
+}
- nseed=fSeeds->GetEntriesFast();
-
- 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; i<nseed; i++) {
- AliTRDtrack *pt=(AliTRDtrack*)fSeeds->UncheckedAt(i), &t=*pt;
- FollowProlongation(t,innerTB);
- if (t.GetNumberOfClusters() >= foundMin) {
- UseClusters(&t);
- CookLabel(pt, 1-fgkLabelFraction);
- t.CookdEdx();
- found++;
-// cout<<found<<'\r';
- iotrackTRD = pt;
- trdTree.Fill();
- if(PropagateToTPC(t)) {
- AliTPCtrack *tpc = new AliTPCtrack(*pt,pt->GetAlpha());
- iotrack = tpc;
- tpcTree.Fill();
- delete tpc;
- }
- }
- delete fSeeds->RemoveAt(i);
- fNseeds--;
- }
- }
- }
- }
- tpcTree.Write();
- trdTree.Write();
-
- cout<<"Total number of found tracks: "<<found<<endl;
-
- UnloadEvent();
-
- savedir->cd();
-
- return 0;
-}
-
-//___________________________________________________________________
-Int_t AliTRDtracker::Clusters2Tracks(AliESD* event)
+//_____________________________________________________________________________
+Int_t AliTRDtracker::RefitInward(AliESDEvent *event)
{
//
- // 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.
+ // Refits tracks within the TRD. The ESD event is expected to contain seeds
+ // at the outer part of the TRD.
// The tracks are propagated to the innermost time bin
// of the TRD and the ESD event is updated
+ // Origin: Thomas KUHR (Thomas.Kuhr@cern.ch)
//
- Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins();
- Float_t foundMin = fgkMinClustersInTrack * timeBins;
- Int_t nseed = 0;
- Int_t found = 0;
- Int_t 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; i<n; i++) {
- AliESDtrack* seed=event->GetTrack(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 (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;
}
- found++;
-// cout<<found<<'\r';
- if(PropagateToTPC(t)) {
- seed->UpdateTrackParams(pt, AliESDtrack::kTRDin);
- }
- delete seed2;
- delete pt;
- }
+ ULong_t status = seed->GetStatus();
+ if ((status & AliESDtrack::kTRDout) == 0) {
+ fHRefit->Fill(2);
+ continue;
+ }
+ if ((status & AliESDtrack::kTRDin) != 0) {
+ fHRefit->Fill(3);
+ continue;
+ }
+
+ nseed++;
+ fHRefit->Fill(4);
- cout<<"Number of loaded seeds: "<<nseed<<endl;
- cout<<"Number of found tracks from loaded seeds: "<<found<<endl;
+ seed2.ResetCovariance(50.0);
- // after tracks from loaded seeds are found and the corresponding
- // clusters are used, look for additional seeds from TRD
+ AliTRDtrack *pt = new AliTRDtrack(seed2,seed2.GetAlpha());
+ Int_t *indexes2 = seed2.GetIndexes();
+ for (Int_t l = 0; l < AliTRDtrack::kNplane;++l) {
+ for (Int_t j = 0; j < AliTRDtrack::kNslice;j++) {
+ pt->SetPIDsignals(seed2.GetPIDsignals(l,j),l,j);
+ }
+ pt->SetPIDTimBin(seed2.GetPIDTimBin(l),l);
+ }
- if(fAddTRDseeds) {
- // Find tracks for the seeds in the TRD
- Int_t timeBins = fTrSec[0]->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));
+ Int_t *indexes3 = pt->GetBackupIndexes();
+ for (Int_t l = 0; l < 200;++l) {
+ if (indexes2[l] == 0) {
+ break;
}
- for(Int_t i=0; i<nSteps; i++) {
- Int_t outer=timeBins-1-i*step;
- Int_t inner=outer-gap;
+ 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->SetTRDpidQuality(pidQ);
+
+ // update calibration
+ if(calibra->GetHisto2d()) calibra->UpdateHistograms(pt);
+ found++;
- nseed=fSeeds->GetEntriesFast();
-
- 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; i<nseed; i++) {
- AliTRDtrack *pt=(AliTRDtrack*)fSeeds->UncheckedAt(i), &t=*pt;
- FollowProlongation(t,innerTB);
- if (t.GetNumberOfClusters() >= foundMin) {
- UseClusters(&t);
- CookLabel(pt, 1-fgkLabelFraction);
- t.CookdEdx();
- found++;
-// cout<<found<<'\r';
- if(PropagateToTPC(t)) {
- AliESDtrack track;
- track.UpdateTrackParams(pt,AliESDtrack::kTRDin);
- event->AddTrack(&track);
- }
+ Double_t xTPC = 250.0;
+ if (PropagateToX(*pt,xTPC,fgkMaxStep)) {
+ seed->UpdateTrackParams(pt,AliESDtrack::kTRDrefit);
+ fHRefit->Fill(5);
+
+ for (Int_t l = 0; l < AliTRDtrack::kNplane; ++l) {
+ for (Int_t j = 0; j < AliTRDtrack::kNslice; j++) {
+ seed->SetTRDslice(pt->GetPIDsignals(l,j),l,j);
+ }
+ seed->SetTRDTimBin(pt->GetPIDTimBin(l),l);
+ }
+ } else {
+ // If not prolongation to TPC - propagate without update
+ fHRefit->Fill(5);
+ AliTRDtrack *seed2t = new AliTRDtrack(*seed);
+ seed2t->ResetCovariance(5.0);
+ AliTRDtrack *pt2 = new AliTRDtrack(*seed2t,seed2t->GetAlpha());
+ delete seed2t;
+
+ if (PropagateToX(*pt2,xTPC,fgkMaxStep)) {
+ pt2->CookdEdx();
+ pt2->CookdEdxTimBin(seed->GetID());
+ seed->UpdateTrackParams(pt2,AliESDtrack::kTRDrefit);
+ fHRefit->Fill(6);
+
+ for (Int_t l = 0; l < AliTRDtrack::kNplane; ++l) {
+ for (Int_t j = 0; j < AliTRDtrack::kNslice; j++) {
+ seed->SetTRDslice(pt2->GetPIDsignals(l,j),l,j);
}
- delete fSeeds->RemoveAt(i);
- fNseeds--;
+ seed->SetTRDTimBin(pt2->GetPIDTimBin(l),l);
}
}
- }
- }
-
- cout<<"Total number of found tracks: "<<found<<endl;
-
- return 0;
-}
-
-
-//_____________________________________________________________________________
-Int_t AliTRDtracker::PropagateBack(const TFile *inp, TFile *out) {
- //
- // Reads seeds from file <inp>. The seeds are AliTPCtrack's found and
- // backpropagated by the TPC tracker. Each seed is first propagated
- // to the TRD, and then its prolongation is searched in the TRD.
- // If sufficiently long continuation of the track is found in the TRD
- // the track is updated, otherwise it's stored as originaly defined
- // by the TPC tracker.
- //
+ // 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;
- LoadEvent();
+ }
- TDirectory *savedir=gDirectory;
+ // Add TRD track to ESDfriendTrack
+ if (fReconstructor->GetStreamLevel(AliTRDReconstructor::kTracker) > 0) {
+ seed->AddCalibObject(new AliTRDtrack(*pt/*, kTRUE*/));
+ }
+ delete pt;
- TFile *in=(TFile*)inp;
+ }
- if (!in->IsOpen()) {
- cerr<<"AliTRDtracker::PropagateBack(): ";
- cerr<<"file with back propagated TPC tracks is not open !\n";
- return 1;
- }
+ AliInfo(Form("Number of loaded seeds: %d",nseed));
+ AliInfo(Form("Number of found tracks from loaded seeds: %d",found));
- if (!out->IsOpen()) {
- cerr<<"AliTRDtracker::PropagateBack(): ";
- cerr<<"file for back propagated TRD tracks is not open !\n";
- return 2;
- }
+ SaveLogHists();
- in->cd();
- char tname[100];
- sprintf(tname,"seedsTPCtoTRD_%d",GetEventNumber());
- TTree *seedTree=(TTree*)in->Get(tname);
- if (!seedTree) {
- cerr<<"AliTRDtracker::PropagateBack(): ";
- cerr<<"can't get a tree with seeds from TPC !\n";
- cerr<<"check if your version of TPC tracker creates tree "<<tname<<"\n";
- return 3;
- }
+ return 0;
- AliTPCtrack *seed=new AliTPCtrack;
- seedTree->SetBranchAddress("tracks",&seed);
+}
- Int_t n=(Int_t)seedTree->GetEntries();
- for (Int_t i=0; i<n; i++) {
- seedTree->GetEvent(i);
- Int_t lbl = seed->GetLabel();
- AliTRDtrack *tr = new AliTRDtrack(*seed,seed->GetAlpha());
- tr->SetSeedLabel(lbl);
- fSeeds->AddLast(tr);
- fNseeds++;
- }
+//_____________________________________________________________________________
+Int_t AliTRDtracker::FollowProlongation(AliTRDtrack &t)
+{
+ //
+ // Starting from current position on track=t this function tries
+ // to extrapolate the track up to timeBin=0 and to confirm prolongation
+ // if a close cluster is found. Returns the number of clusters
+ // expected to be found in sensitive layers
+ // GeoManager used to estimate mean density
+ //
- delete seed;
- delete seedTree;
+ Int_t sector;
+ Int_t lastplane = GetLastPlane(&t);
+ Double_t xx0 = 0.0;
+ Double_t xrho= 0.0;
+ Int_t expectedNumberOfClusters = 0;
- out->cd();
+ for (Int_t iplane = lastplane; iplane >= 0; iplane--) {
- AliTPCtrack *otrack=0;
+ Int_t row0 = GetGlobalTimeBin(0,iplane,GetTimeBinsPerPlane()-1);
+ Int_t rowlast = GetGlobalTimeBin(0,iplane,0);
- sprintf(tname,"seedsTRDtoTOF1_%d",GetEventNumber());
- TTree tofTree1(tname,"Tracks back propagated through TPC and TRD");
- tofTree1.Branch("tracks","AliTPCtrack",&otrack,32000,0);
+ // Propagate track close to the plane if neccessary
+ Double_t currentx = fTrSec[0]->GetLayer(rowlast)->GetX();
+ if (currentx < (-fgkMaxStep + t.GetX())) {
+ // Propagate closer to chamber - safety space fgkMaxStep
+ if (!PropagateToX(t,currentx+fgkMaxStep,fgkMaxStep)) {
+ break;
+ }
+ }
- sprintf(tname,"seedsTRDtoTOF2_%d",GetEventNumber());
- TTree tofTree2(tname,"Tracks back propagated through TPC and TRD");
- tofTree2.Branch("tracks","AliTPCtrack",&otrack,32000,0);
-
- sprintf(tname,"seedsTRDtoPHOS_%d",GetEventNumber());
- TTree phosTree(tname,"Tracks back propagated through TPC and TRD");
- phosTree.Branch("tracks","AliTPCtrack",&otrack,32000,0);
-
- sprintf(tname,"seedsTRDtoRICH_%d",GetEventNumber());
- TTree richTree(tname,"Tracks back propagated through TPC and TRD");
- richTree.Branch("tracks","AliTPCtrack",&otrack,32000,0);
-
- sprintf(tname,"TRDb_%d",GetEventNumber());
- TTree trdTree(tname,"Back propagated TRD tracks at outer TRD time bin");
- AliTRDtrack *otrackTRD=0;
- trdTree.Branch("tracks","AliTRDtrack",&otrackTRD,32000,0);
-
- if (IsStoringBarrel()) SetBarrelTree("back");
- out->cd();
-
- Int_t found=0;
- Int_t nseed=fSeeds->GetEntriesFast();
-
- // Float_t foundMin = fgkMinClustersInTrack * fTimeBinsPerPlane * fGeom->Nplan();
- Float_t foundMin = 40;
-
- Int_t outermostTB = fTrSec[0]->GetOuterTimeBin();
-
- for (Int_t i=0; i<nseed; i++) {
-
- AliTRDtrack *ps=(AliTRDtrack*)fSeeds->UncheckedAt(i), &s=*ps;
- Int_t expectedClr = FollowBackProlongation(s);
-
- if (IsStoringBarrel()) {
- StoreBarrelTrack(ps, fgkLastPlane, kTrackBack);
- fBarrelTree->Fill();
- }
-
- Int_t foundClr = s.GetNumberOfClusters();
- Int_t lastTB = fTrSec[0]->GetLayerNumber(s.GetX());
-
- // printf("seed %d: found %d out of %d expected clusters, Min is %f\n",
- // i, foundClr, expectedClr, foundMin);
-
- if (foundClr >= foundMin) {
- if(foundClr >= 2) {
- s.CookdEdx();
- CookLabel(ps, 1-fgkLabelFraction);
- UseClusters(ps);
- }
-
- // Propagate to outer reference plane [SR, GSI, 18.02.2003]
- ps->PropagateTo(364.8);
- otrackTRD=ps;
- trdTree.Fill();
- found++;
-// cout<<found<<'\r';
+ if (!AdjustSector(&t)) {
+ break;
}
- if(((expectedClr < 10) && (lastTB == outermostTB)) ||
- ((expectedClr >= 10) &&
- (((Float_t) foundClr) / ((Float_t) expectedClr) >=
- fgkMinFractionOfFoundClusters) && (lastTB == outermostTB))) {
-
- Double_t xTOF = 375.5;
-
- if(PropagateToOuterPlane(s,xTOF)) {
- AliTPCtrack *pt = new AliTPCtrack(*ps,ps->GetAlpha());
- otrack = pt;
- tofTree1.Fill();
- delete pt;
-
- xTOF = 381.5;
-
- if(PropagateToOuterPlane(s,xTOF)) {
- AliTPCtrack *pt = new AliTPCtrack(*ps,ps->GetAlpha());
- otrack = pt;
- tofTree2.Fill();
- delete pt;
-
- Double_t xPHOS = 460.;
-
- if(PropagateToOuterPlane(s,xPHOS)) {
- AliTPCtrack *pt = new AliTPCtrack(*ps,ps->GetAlpha());
- otrack = pt;
- phosTree.Fill();
- delete pt;
-
- Double_t xRICH = 490+1.267;
-
- if(PropagateToOuterPlane(s,xRICH)) {
- AliTPCtrack *pt = new AliTPCtrack(*ps,ps->GetAlpha());
- otrack = pt;
- richTree.Fill();
- delete pt;
- }
- }
- }
- }
+ // 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;
}
- }
-
-
- out->cd();
- tofTree1.Write();
- tofTree2.Write();
- phosTree.Write();
- richTree.Write();
- trdTree.Write();
-
- if (IsStoringBarrel()) { // [SR, 03.04.2003]
- fBarrelFile->cd();
- fBarrelTree->Write();
- fBarrelFile->Flush();
- }
-
- savedir->cd();
- cerr<<"Number of seeds: "<<nseed<<endl;
- cerr<<"Number of back propagated TRD tracks: "<<found<<endl;
-
- UnloadEvent();
-
- return 0;
-
-}
-
-//_____________________________________________________________________________
-Int_t AliTRDtracker::PropagateBack(AliESD* event) {
- //
- // Gets seeds from ESD event. The seeds are AliTPCtrack's found and
- // backpropagated by the TPC tracker. Each seed is first propagated
- // to the TRD, and then its prolongation is searched in the TRD.
- // If sufficiently long continuation of the track is found in the TRD
- // the track is updated, otherwise it's stored as originaly defined
- // by the TPC tracker.
- //
-
- Int_t found=0;
- Float_t foundMin = 40;
-
- Int_t n = event->GetNumberOfTracks();
- for (Int_t i=0; i<n; i++) {
- AliESDtrack* seed=event->GetTrack(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);
- fNseeds++;
- Float_t p4 = track->GetC();
- //
- Int_t expectedClr = FollowBackProlongation(*track);
- if (track->GetNumberOfClusters()<expectedClr/3){
- AliTRDtrack *track1 = new AliTRDtrack(*seed);
- track1->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) {
- delete track;
- continue; //too big change of curvature - to be checked
- }
- Int_t foundClr = track->GetNumberOfClusters();
- if (foundClr >= foundMin) {
- if(foundClr >= 2) {
- track->CookdEdx();
-// CookLabel(track, 1-fgkLabelFraction);
- UseClusters(track);
+ 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;
}
-
- // Propagate to outer reference plane [SR, GSI, 18.02.2003]
-// track->PropagateTo(364.8); why?
-
- //seed->UpdateTrackParams(track, AliESDtrack::kTRDout);
- //found++;
- }
- //Propagation to the TOF (I.Belikov)
-
- if (track->GetStop()==kFALSE){
-
- Double_t xtof=371.;
- Double_t c2=track->GetC()*xtof - track->GetEta();
- if (TMath::Abs(c2)>=0.85) continue;
- Double_t xTOF0 = 371. ;
- PropagateToOuterPlane(*track,xTOF0);
- //
- 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;
- }
- } else if (y <-ymax) {
- if (!track->Rotate(-AliTRDgeometry::GetAlpha())) {
- delete track;
- continue;
- }
+ Int_t ilayer = GetGlobalTimeBin(0,iplane,itime);
+ expectedNumberOfClusters++;
+ t.SetNExpected(t.GetNExpected() + 1);
+ if (t.GetX() > 345.0) {
+ t.SetNExpectedLast(t.GetNExpectedLast() + 1);
}
-
- if (track->PropagateTo(xtof)) {
- seed->UpdateTrackParams(track, AliESDtrack::kTRDout);
- if (track->GetNumberOfClusters()>foundMin) found++;
- }
- }else{
- if (track->GetNumberOfClusters()>15&&track->GetNumberOfClusters()>0.5*expectedClr){
- seed->UpdateTrackParams(track, AliESDtrack::kTRDout);
- seed->SetStatus(AliESDtrack::kTRDStop);
- found++;
- }
- }
-
- delete track;
-
- //End of propagation to the TOF
- //if (foundClr>foundMin)
- // seed->UpdateTrackParams(track, AliESDtrack::kTRDout);
-
-
- }
-
- cerr<<"Number of seeds: "<<fNseeds<<endl;
- cerr<<"Number of back propagated TRD tracks: "<<found<<endl;
-
- fSeeds->Clear(); fNseeds=0;
+ AliTRDpropagationLayer &timeBin = *(fTrSec[sector]->GetLayer(ilayer));
+ AliTRDcluster *cl = 0;
+ UInt_t index = 0;
+ Double_t maxChi2 = fgkMaxChi2;
+ x = timeBin.GetX();
- return 0;
-
-}
-
-//_____________________________________________________________________________
-Int_t AliTRDtracker::RefitInward(AliESD* event)
-{
- //
- // Refits tracks within the TRD. The ESD event is expected to contain seeds
- // at the outer part of the TRD.
- // The tracks are propagated to the innermost time bin
- // of the TRD and the ESD event is updated
- // Origin: Thomas KUHR (Thomas.Kuhr@cern.ch)
- //
-
- Int_t timeBins = fTrSec[0]->GetNumberOfTimeBins();
- Float_t foundMin = fgkMinClustersInTrack * timeBins;
- Int_t nseed = 0;
- Int_t found = 0;
- Int_t innerTB = fTrSec[0]->GetInnerTimeBin();
-
- Int_t n = event->GetNumberOfTracks();
- for (Int_t i=0; i<n; i++) {
- AliESDtrack* seed=event->GetTrack(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(5.);
- AliTRDtrack *pt = new AliTRDtrack(*seed2,seed2->GetAlpha());
- UInt_t * indexes2 = seed2->GetIndexes();
- 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()<seed->GetTRDclusters(indexes3)*0.5){
- // debug - why we dont go back?
- AliTRDtrack *pt2 = new AliTRDtrack(*seed2,seed2->GetAlpha());
- UInt_t * indexes2 = seed2->GetIndexes();
- UInt_t * indexes3 = pt2->GetBackupIndexes();
- for (Int_t i=0;i<200;i++) {
- if (indexes2[i]==0) break;
- indexes3[i] = indexes2[i];
- }
- FollowProlongation(*pt2, innerTB);
- delete pt2;
- }
- */
- if (t.GetNumberOfClusters() >= foundMin) {
- // UseClusters(&t);
- //CookLabel(pt, 1-fgkLabelFraction);
- // t.CookdEdx();
- }
- found++;
-// cout<<found<<'\r';
-
- if(PropagateToTPC(t)) {
- seed->UpdateTrackParams(pt, AliESDtrack::kTRDrefit);
- }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))
- seed->UpdateTrackParams(pt2, AliESDtrack::kTRDrefit);
- delete pt2;
- }
-
- delete seed2;
- delete pt;
- }
-
- cout<<"Number of loaded seeds: "<<nseed<<endl;
- cout<<"Number of found tracks from loaded seeds: "<<found<<endl;
-
- return 0;
-
-}
-
-
-//---------------------------------------------------------------------------
-Int_t AliTRDtracker::FollowProlongation(AliTRDtrack& t, Int_t rf)
-{
- // Starting from current position on track=t this function tries
- // to extrapolate the track up to timeBin=0 and to confirm prolongation
- // if a close cluster is found. Returns the number of clusters
- // expected to be found in sensitive layers
-
- 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 trackIndex = t.GetLabel();
-
- Int_t ns=Int_t(2*TMath::Pi()/AliTRDgeometry::GetAlpha()+0.5);
-
- Int_t tryAgain=fMaxGap;
-
- Double_t alpha=t.GetAlpha();
- alpha = TVector2::Phi_0_2pi(alpha);
-
- Int_t s=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect;
- Double_t radLength, rho, x, dx, y, ymax, z;
-
- 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++;
- wIndex = (Float_t) t.GetLabel();
- wTB = nr;
-
- AliTRDpropagationLayer& timeBin=*(fTrSec[s]->GetLayer(nr-1));
-
- Double_t sy2=ExpectedSigmaY2(x,t.GetTgl(),t.GetPt());
- Double_t sz2=ExpectedSigmaZ2(x,t.GetTgl());
-
- 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;
-
-
- 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) {
- Float_t minDY = 1000000;
- for (Int_t i=0; i<timeBin; i++) {
- AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]);
- if((c->GetLabel(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);
- }
- }
-
- // Now go for the real cluster search
- if (timeBin) {
- //
- //find cluster in history
- cl =0;
-
- AliTRDcluster * cl0 = timeBin[0];
+ AliTRDcluster *cl0 = timeBin[0];
if (!cl0) {
+ // No clusters in given time bin
+ continue;
+ }
+
+ Int_t layer = fGeom->GetLayer(cl0->GetDetector());
+ if (layer > lastplane) {
continue;
}
- Int_t plane = fGeom->GetPlane(cl0->GetDetector());
- if (plane>lastplane) continue;
+
Int_t timebin = cl0->GetLocalTimeBin();
- AliTRDcluster * cl2= GetCluster(&t,plane, timebin);
+ AliTRDcluster *cl2 = GetCluster(&t,layer,timebin,index);
+
if (cl2) {
- cl =cl2;
- Double_t h01 = GetTiltFactor(cl);
- maxChi2=t.GetPredictedChi2(cl,h01);
- }
- if ((!cl) && road>fgkWideRoad) {
- //if (t.GetNumberOfClusters()>4)
- // cerr<<t.GetNumberOfClusters()
- // <<"FindProlongation warning: Too broad road !\n";
- continue;
- }
-
-
- if(!cl){
-
- for (Int_t i=timeBin.Find(y-road); i<timeBin; i++) {
- AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]);
- if (c->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);
- }
+ cl = cl2;
+ //Double_t h01 = GetTiltFactor(cl); //I.B's fix
+ //maxChi2=t.GetPredictedChi2(cl,h01);
}
- if(!cl) {
-
- for (Int_t i=timeBin.Find(y-road); i<timeBin; i++) {
- AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]);
-
- if (c->GetY() > 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);
-
- t.SetSampledEdx(cl->GetQ()/dx,t.GetNumberOfClusters());
- //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--;
- }
+ if (cl) {
+
+ //if (cl->GetNPads()<5)
+ Double_t dxsample = timeBin.GetdX();
+ t.SetSampledEdx(TMath::Abs(cl->GetQ()/dxsample));
+ Double_t h01 = GetTiltFactor(cl);
+ Int_t det = cl->GetDetector();
+ Int_t llayer = 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);
+ if (!AdjustSector(&t)) {
+ break; //I.B's fix
+ }
+
+ 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((((Int_t) wTB)%15 == 0) || (((Int_t) wTB)%15 == 14)) {
-
- printf(" %f", wIndex); //1
- printf(" %f", wTB); //2
- printf(" %f", wYrt); //3
- printf(" %f", wYclosest); //4
- printf(" %f", wYcorrect); //5
- printf(" %f", wYwindow); //6
- printf(" %f", wZrt); //7
- printf(" %f", wZclosest); //8
- printf(" %f", wZcorrect); //9
- printf(" %f", wZwindow); //10
- printf(" %f", wPx); //11
- printf(" %f", wPy); //12
- printf(" %f", wPz); //13
- printf(" %f", wSigmaC2*1000000); //14
- printf(" %f", wSigmaTgl2*1000); //15
- printf(" %f", wSigmaY2); //16
- // printf(" %f", wSigmaZ2); //17
- printf(" %f", wChi2); //17
- printf(" %f", wC); //18
- printf("\n");
- }
- */
}
- }
+
+ }
+
}
+
return expectedNumberOfClusters;
-
-
-}
-//___________________________________________________________________
+}
-Int_t AliTRDtracker::FollowBackProlongation(AliTRDtrack& t)
+//_____________________________________________________________________________
+Int_t AliTRDtracker::FollowBackProlongation(AliTRDtrack &t)
{
+ //
// Starting from current radial position of track <t> 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 ?
+ //
- 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 trackIndex = t.GetLabel();
- Int_t tryAgain=fMaxGap;
+ Int_t sector;
- Double_t alpha=t.GetAlpha();
- TVector2::Phi_0_2pi(alpha);
+ Double_t xx0 = 0.0;
+ Double_t xrho = 0.0;
- Int_t s;
+ Float_t ratio0 = 0.0;
- Int_t outerTB = fTrSec[0]->GetOuterTimeBin();
- Double_t radLength, rho, x, dx, y, ymax = 0, z;
- Bool_t lookForCluster;
+ Int_t expectedNumberOfClusters = 0;
- Int_t expectedNumberOfClusters = 0;
- x = t.GetX();
+ AliTRDtracklet tracklet;
- alpha=AliTRDgeometry::GetAlpha(); // note: change in meaning
+ const Int_t kNclusters = 1000;
+ Int_t clusters[kNclusters];
+ for (Int_t i = 0; i < kNclusters; i++) {
+ clusters[i] = -1;
+ }
- Int_t nRefPlane = fgkFirstPlane;
- Bool_t isNewLayer = kFALSE;
+// // Calibration fill 2D
+// AliTRDCalibraFillHisto *calibra = AliTRDCalibraFillHisto::Instance();
+// if (!calibra) {
+// AliInfo("Could not get Calibra instance\n");
+// }
+// if (calibra->GetMITracking()) {
+// calibra->ResetTrack();
+// }
- Double_t chi2;
- Double_t minDY;
- Int_t zone =-10;
- Int_t nr;
- for (nr=fTrSec[0]->GetLayerNumber(t.GetX()); nr<outerTB+1; nr++) {
-
- y = t.GetY();
- z = t.GetZ();
+ // Loop through the TRD planes
+ for (Int_t iplane = 0; iplane < AliTRDtrack::kNplane; iplane++) {
- // first propagate to the outer surface of the current time bin
+ Int_t hb = iplane * 10;
+ fHClSearch->Fill(hb);
- s = t.GetSector();
- 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();
+ // 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);
- 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;
- if (TMath::Abs(angle - t.GetAlpha())>0.000001) break; //better to stop track
- Int_t currentzone = fTrSec[s]->GetLayer(nr)->GetZone(z);
- if (currentzone==-10) break; // we are in the frame
- if (currentzone>-10){ // layer knows where we are
- if (zone==-10) zone = currentzone;
- if (zone!=currentzone) break;
+ // 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;
}
- //
- //
- 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);
+ // 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 (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);
-
- 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;
+ // Rotate track to adjacent sector if neccessary
+ if (!AdjustSector(&t)) {
+ fHClSearch->Fill(hb+3);
+ break;
+ }
- y = t.GetY();
- z = t.GetZ();
+ // Check whether azimuthal angle is getting too large
+ if (TMath::Abs(t.GetSnp()) > fgkMaxSnp) {
+ fHClSearch->Fill(hb+4);
+ break;
+ }
- 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);
+ 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;
+ }
- if(lookForCluster) {
+ //
+ // Propagate and update track
+ //
+ for (Int_t itime = GetTimeBinsPerPlane()-1; itime >= 0; itime--) {
+ Int_t ilayer = GetGlobalTimeBin(0, iplane,itime);
expectedNumberOfClusters++;
-
- 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;
- 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 (road>fgkWideRoad) {
- if (t.GetNumberOfClusters()>4)
- cerr<<t.GetNumberOfClusters()
- <<"FindProlongation warning: Too broad road !\n";
- return 0;
- }
-
- AliTRDcluster *cl=0;
- UInt_t index=0;
-
- Double_t maxChi2=fgkMaxChi2;
-
- if (isNewLayer) {
- road = 3 * road;
- //sz2 = 3 * sz2;
- maxChi2 = 10 * fgkMaxChi2;
+ t.SetNExpected(t.GetNExpected() + 1);
+ if (t.GetX() > 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) {
- minDY = 1000000;
- for (Int_t i=0; i<timeBin; i++) {
- AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]);
- if((c->GetLabel(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) {
-
- for (Int_t i=timeBin.Find(y-road); i<timeBin; i++) {
- AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]);
- if (c->GetY() > 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();
- }
+ 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) {
-
- for (Int_t i=timeBin.Find(y-road); i<timeBin; i++) {
- AliTRDcluster* c=(AliTRDcluster*)(timeBin[i]);
-
- if (c->GetY() > y+road) break;
- if (c->IsUsed() > 0) continue;
- if((c->GetZ()-z)*(c->GetZ()-z) > 2.25 * 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);
- }
- }
-
if (cl) {
- wYclosest = cl->GetY();
- wZclosest = cl->GetZ();
-
- t.SetSampledEdx(cl->GetQ()/dx,t.GetNumberOfClusters());
- Double_t h01 = GetTiltFactor(cl);
- 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--;
-
- //if (minDY < 1000000 && isNewLayer)
- //cout << "\t" << nRefPlane << "\t" << "\t" << t.GetNRotate() << "\t" <<
- // road << "\t" << minDY << "\t" << chi2 << "\t" << wChi2 << "\t" << maxChi2 << endl;
-
- }
-
- isNewLayer = kFALSE;
-
- /*
- if((((Int_t) wTB)%15 == 0) || (((Int_t) wTB)%15 == 14)) {
-
- printf(" %f", wIndex); //1
- printf(" %f", wTB); //2
- printf(" %f", wYrt); //3
- printf(" %f", wYclosest); //4
- printf(" %f", wYcorrect); //5
- printf(" %f", wYwindow); //6
- printf(" %f", wZrt); //7
- printf(" %f", wZclosest); //8
- printf(" %f", wZcorrect); //9
- printf(" %f", wZwindow); //10
- printf(" %f", wPx); //11
- printf(" %f", wPy); //12
- printf(" %f", wPz); //13
- printf(" %f", wSigmaC2*1000000); //14
- printf(" %f", wSigmaTgl2*1000); //15
- printf(" %f", wSigmaY2); //16
- // printf(" %f", wSigmaZ2); //17
- printf(" %f", wChi2); //17
- printf(" %f", wC); //18
- printf("\n");
- }
- */
- }
- }
- }
- if (nr<outerTB)
- t.SetStop(kTRUE);
- else
- t.SetStop(kFALSE);
- return expectedNumberOfClusters;
-
-
-}
-
-//---------------------------------------------------------------------------
-Int_t AliTRDtracker::Refit(AliTRDtrack& t, Int_t rf)
-{
- // Starting from current position on track=t this function tries
- // to extrapolate the track up to timeBin=0 and to reuse already
- // assigned clusters. Returns the number of clusters
- // expected to be found in sensitive layers
- // get indices of assigned clusters for each layer
- // Origin: Thomas KUHR (Thomas.Kuhr@cern.ch)
-
- Int_t iCluster[90];
- for (Int_t i = 0; i < 90; i++) iCluster[i] = 0;
- for (Int_t i = 0; i < t.GetNumberOfClusters(); i++) {
- Int_t index = t.GetClusterIndex(i);
- AliTRDcluster *cl=(AliTRDcluster*) GetCluster(index);
- if (!cl) continue;
- Int_t detector=cl->GetDetector();
- 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);
- 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 <t> this function
+ //
+ // Starting from current X-position of track <t> this function
// extrapolates the track up to radial position <xToGo>.
// 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); nr<plToGo; nr++) {
-
- y = t.GetY(); z = t.GetZ();
-
- // 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; 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 <t> 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;
-}
-
-void AliTRDtracker::LoadEvent()
-{
- // Fills clusters into TRD tracking_sectors
- // Note that the numbering scheme for the TRD tracking_sectors
- // differs from that of TRD sectors
-
- ReadClusters(fClusters);
- Int_t ncl=fClusters->GetEntriesFast();
- cout<<"LoadSectors: sorting "<<ncl<<" clusters"<<endl;
-
- UInt_t index;
- 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);
-
- Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(plane,localTimeBin);
- if(gtb < 0) continue;
- Int_t layer = fTrSec[trackingSector]->GetLayerNumber(gtb);
- index=ncl;
- fTrSec[trackingSector]->GetLayer(layer)->InsertCluster(c,index);
- }
- // printf("\r\n");
+ return 1;
}
//_____________________________________________________________________________
Int_t AliTRDtracker::LoadClusters(TTree *cTree)
{
+ //
// Fills clusters into TRD tracking_sectors
// Note that the numbering scheme for the TRD tracking_sectors
// differs from that of TRD sectors
+ //
- if (ReadClusters(fClusters,cTree)) {
- Error("LoadClusters","Problem with reading the clusters !");
- return 1;
+
+ if (ReadClusters(fClusters, cTree)) {
+ AliError("Problem with reading the clusters !");
+ return 1;
}
- Int_t ncl=fClusters->GetEntriesFast();
- cout<<"\n LoadSectors: sorting "<<ncl<<" clusters"<<endl;
+ Int_t ncl = fClusters->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;
+
}
//_____________________________________________________________________________
-void AliTRDtracker::UnloadEvent()
+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();
}
-//__________________________________________________________________________
-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 "<<turn<<" exceeds the limit of 2"<<endl;
- return;
- }
+ const Double_t kMaxTheta = 1.0;
+ const Double_t kMaxPhi = 2.0;
- Double_t x[5], c[15];
- Int_t maxSec=AliTRDgeometry::kNsect;
-
- Double_t alpha=AliTRDgeometry::GetAlpha();
- Double_t shift=AliTRDgeometry::GetAlpha()/2.;
- Double_t cs=cos(alpha), sn=sin(alpha);
- Double_t cs2=cos(2.*alpha), sn2=sin(2.*alpha);
-
-
- Int_t i2 = fTrSec[0]->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; ns<maxSec; ns++) {
-
- Int_t nl2 = *(fTrSec[(ns-2+maxSec)%maxSec]->GetLayer(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 (js<nl2) {
- if(turn != 2) continue;
- AliTRDpropagationLayer& r2=*(fTrSec[(ns-2+maxSec)%maxSec]->GetLayer(i2));
- cl=r2[js];
- y2=cl->GetY(); z2=cl->GetZ();
-
- x2= xx2*cs2+y2*sn2;
- y2=-xx2*sn2+y2*cs2;
- }
- else if (js<nl2+nl) {
- if(turn != 1) continue;
- AliTRDpropagationLayer& r2=*(fTrSec[(ns-1+maxSec)%maxSec]->GetLayer(i2));
- cl=r2[js-nl2];
- y2=cl->GetY(); z2=cl->GetZ();
-
- x2= xx2*cs+y2*sn;
- y2=-xx2*sn+y2*cs;
- }
- else if (js<nl2+nl+nm) {
- if(turn != 1) continue;
- AliTRDpropagationLayer& r2=*(fTrSec[ns]->GetLayer(i2));
- cl=r2[js-nl2-nl];
- x2=xx2; y2=cl->GetY(); z2=cl->GetZ();
- }
- else if (js<nl2+nl+nm+nu) {
- if(turn != 1) continue;
- AliTRDpropagationLayer& r2=*(fTrSec[(ns+1)%maxSec]->GetLayer(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 "<<fNseeds;
- }
+ Int_t maxSec = AliTRDgeometry::kNsector;
+
+ // Linear fitters in planes
+ TLinearFitter fitterTC(2,"hyp2"); // Fitting with tilting pads - kz fixed - kz= Z/x, + vertex const
+ TLinearFitter fitterT2(4,"hyp4"); // Fitting with tilting pads - kz not fixed
+ fitterTC.StoreData(kTRUE);
+ fitterT2.StoreData(kTRUE);
+ AliRieman rieman(1000); // Rieman fitter
+ AliRieman rieman2(1000); // Rieman fitter
+
+ // Find the maximal and minimal layer for the planes
+ Int_t layers[6][2];
+ AliTRDpropagationLayer *reflayers[6];
+ for (Int_t i = 0; i < 6; i++) {
+ layers[i][0] = 10000;
+ layers[i][1] = 0;
+ }
+ for (Int_t ns = 0; ns < maxSec; ns++) {
+ for (Int_t ilayer = 0; ilayer < fTrSec[ns]->GetNumberOfLayers(); ilayer++) {
+ AliTRDpropagationLayer &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)
-{
- //
- // 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()
- //
- TObjArray *clusterArray = new TObjArray(400);
-
- 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");
+ 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
- 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);
- AliTRDcluster *co = new AliTRDcluster(*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);
+ 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;
}
}
- 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];
+
+ Double_t seedquality[kMaxSeed];
+ Double_t seedquality2[kMaxSeed];
+ Double_t seedparams[kMaxSeed][7];
+ Int_t seedlayer[kMaxSeed];
+ Int_t registered = 0;
+ Int_t sort[kMaxSeed];
+
+ //
+ // Seeding part
+ //
+ for (Int_t ns = 0; ns < maxSec; ns++) { // Loop over sectors
+ //for (Int_t ns = 0; ns < 5; ns++) { // Loop over sectors
+
+ registered = 0; // Reset registerd seed counter
+ cseed = seed[registered];
+ Float_t iter = 0.0;
+
+ for (Int_t sLayer = 2; sLayer >= 0; sLayer--) {
+ //for (Int_t dseed = 5; dseed < 15; dseed += 3) {
+
+ iter += 1.0;
+ Int_t dseed = 5 + Int_t(iter) * 3;
+
+ // Initialize seeding layers
+ for (Int_t ilayer = 0; ilayer < 6; ilayer++) {
+ reflayers[ilayer] = fTrSec[ns]->GetLayer(layers[ilayer][1]-dseed);
+ xcl[ilayer] = reflayers[ilayer]->GetX();
+ }
+
+ Double_t xref = (xcl[sLayer+1] + xcl[sLayer+2]) * 0.5;
+ AliTRDpropagationLayer &layer0 = *reflayers[sLayer+0];
+ AliTRDpropagationLayer &layer1 = *reflayers[sLayer+1];
+ AliTRDpropagationLayer &layer2 = *reflayers[sLayer+2];
+ AliTRDpropagationLayer &layer3 = *reflayers[sLayer+3];
+
+ Int_t maxn3 = layer3;
+ for (Int_t icl3 = 0; icl3 < maxn3; icl3++) {
+
+ AliTRDcluster *cl3 = layer3[icl3];
+ if (!cl3) {
+ continue;
+ }
+ padlength[sLayer+3] = TMath::Sqrt(cl3->GetSigmaZ2() * 12.0);
+ ycl[sLayer+3] = cl3->GetY();
+ zcl[sLayer+3] = cl3->GetZ();
+ Float_t yymin0 = ycl[sLayer+3] - 1.0 - kMaxPhi * (xcl[sLayer+3]-xcl[sLayer+0]);
+ Float_t yymax0 = ycl[sLayer+3] + 1.0 + kMaxPhi * (xcl[sLayer+3]-xcl[sLayer+0]);
+ Int_t maxn0 = layer0;
+
+ for (Int_t icl0 = layer0.Find(yymin0); icl0 < maxn0; icl0++) {
+
+ AliTRDcluster *cl0 = layer0[icl0];
+ if (!cl0) {
+ continue;
+ }
+ if (cl3->IsUsed() && cl0->IsUsed()) {
+ continue;
+ }
+ ycl[sLayer+0] = cl0->GetY();
+ zcl[sLayer+0] = cl0->GetZ();
+ if (ycl[sLayer+0] > yymax0) {
+ break;
+ }
+ Double_t tanphi = (ycl[sLayer+3]-ycl[sLayer+0]) / (xcl[sLayer+3]-xcl[sLayer+0]);
+ if (TMath::Abs(tanphi) > kMaxPhi) {
+ continue;
+ }
+ Double_t tantheta = (zcl[sLayer+3]-zcl[sLayer+0]) / (xcl[sLayer+3]-xcl[sLayer+0]);
+ if (TMath::Abs(tantheta) > kMaxTheta) {
+ continue;
+ }
+ padlength[sLayer+0] = TMath::Sqrt(cl0->GetSigmaZ2() * 12.0);
+
+ // Expected position in 1 layer
+ Double_t y1exp = ycl[sLayer+0] + (tanphi) * (xcl[sLayer+1]-xcl[sLayer+0]);
+ Double_t z1exp = zcl[sLayer+0] + (tantheta) * (xcl[sLayer+1]-xcl[sLayer+0]);
+ Float_t yymin1 = y1exp - kRoad0y - tanphi;
+ Float_t yymax1 = y1exp + kRoad0y + tanphi;
+ Int_t maxn1 = layer1;
+
+ for (Int_t icl1 = layer1.Find(yymin1); icl1 < maxn1; icl1++) {
+
+ AliTRDcluster *cl1 = layer1[icl1];
+ if (!cl1) {
+ continue;
+ }
+ Int_t nusedCl = 0;
+ if (cl3->IsUsed()) nusedCl++;
+ if (cl0->IsUsed()) nusedCl++;
+ if (cl1->IsUsed()) nusedCl++;
+ if (nusedCl > 1) {
+ continue;
+ }
+ ycl[sLayer+1] = cl1->GetY();
+ zcl[sLayer+1] = cl1->GetZ();
+ if (ycl[sLayer+1] > yymax1) {
+ break;
+ }
+ if (TMath::Abs(ycl[sLayer+1]-y1exp) > kRoad0y+tanphi) {
+ continue;
+ }
+ if (TMath::Abs(zcl[sLayer+1]-z1exp) > kRoad0z) {
+ continue;
+ }
+ padlength[sLayer+1] = TMath::Sqrt(cl1->GetSigmaZ2() * 12.0);
+
+ Double_t y2exp = ycl[sLayer+0]+(tanphi) * (xcl[sLayer+2]-xcl[sLayer+0]) + (ycl[sLayer+1]-y1exp);
+ Double_t z2exp = zcl[sLayer+0]+(tantheta) * (xcl[sLayer+2]-xcl[sLayer+0]);
+ Int_t index2 = layer2.FindNearestCluster(y2exp,z2exp,kRoad1y,kRoad1z);
+ if (index2 <= 0) {
+ continue;
+ }
+ AliTRDcluster *cl2 = (AliTRDcluster *) GetCluster(index2);
+ padlength[sLayer+2] = TMath::Sqrt(cl2->GetSigmaZ2() * 12.0);
+ ycl[sLayer+2] = cl2->GetY();
+ zcl[sLayer+2] = cl2->GetZ();
+ if (TMath::Abs(cl2->GetZ()-z2exp) > kRoad0z) {
+ continue;
+ }
+
+ rieman.Reset();
+ rieman.AddPoint(xcl[sLayer+0],ycl[sLayer+0],zcl[sLayer+0],1,10);
+ rieman.AddPoint(xcl[sLayer+1],ycl[sLayer+1],zcl[sLayer+1],1,10);
+ rieman.AddPoint(xcl[sLayer+3],ycl[sLayer+3],zcl[sLayer+3],1,10);
+ rieman.AddPoint(xcl[sLayer+2],ycl[sLayer+2],zcl[sLayer+2],1,10);
+ rieman.Update();
+
+ // Reset fitter
+ for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
+ cseed[iLayer].Reset();
+ }
+ chi2Z = 0.0;
+ chi2R = 0.0;
+
+ for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
+ cseed[sLayer+iLayer].SetZref(0,rieman.GetZat(xcl[sLayer+iLayer]));
+ chi2Z += (cseed[sLayer+iLayer].GetZref(0)- zcl[sLayer+iLayer])
+ * (cseed[sLayer+iLayer].GetZref(0)- zcl[sLayer+iLayer]);
+ cseed[sLayer+iLayer].SetZref(1,rieman.GetDZat(xcl[sLayer+iLayer]));
+ cseed[sLayer+iLayer].SetYref(0,rieman.GetYat(xcl[sLayer+iLayer]));
+ chi2R += (cseed[sLayer+iLayer].GetYref(0)- ycl[sLayer+iLayer])
+ * (cseed[sLayer+iLayer].GetYref(0)- ycl[sLayer+iLayer]);
+ cseed[sLayer+iLayer].SetYref(1,rieman.GetDYat(xcl[sLayer+iLayer]));
+ }
+ if (TMath::Sqrt(chi2R) > 1.0/iter) {
+ continue;
+ }
+ if (TMath::Sqrt(chi2Z) > 7.0/iter) {
+ continue;
+ }
+
+ Float_t minmax[2] = { -100.0, 100.0 };
+ for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
+ Float_t max = zcl[sLayer+iLayer]+padlength[sLayer+iLayer] * 0.5
+ + 1.0 - cseed[sLayer+iLayer].GetZref(0);
+ if (max < minmax[1]) {
+ minmax[1] = max;
+ }
+ Float_t min = zcl[sLayer+iLayer]-padlength[sLayer+iLayer] * 0.5
+ - 1.0 - cseed[sLayer+iLayer].GetZref(0);
+ if (min > minmax[0]) {
+ minmax[0] = min;
+ }
+ }
+
+ Bool_t isFake = kFALSE;
+ if (cl0->GetLabel(0) != cl3->GetLabel(0)) {
+ isFake = kTRUE;
+ }
+ if (cl1->GetLabel(0) != cl3->GetLabel(0)) {
+ isFake = kTRUE;
+ }
+ if (cl2->GetLabel(0) != cl3->GetLabel(0)) {
+ isFake = kTRUE;
+ }
+
+ if (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<squality[bLayer]) {
+ bseed[bLayer] = tseed;
+ }
+ }
+
+ } // Loop: jLayer
+
+ chi2 = AliTRDseed::FitRiemanTilt(bseed,kTRUE);
+
+ } // Loop: jter
+
+ nclusters = 0;
+ nlayers = 0;
+ findable = 0;
+ for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
+ if (TMath::Abs(cseed[iLayer].GetYref(0) / cseed[iLayer].GetX0()) < 0.15) {
+ findable++;
+ }
+ if (cseed[iLayer].IsOK()) {
+ nclusters += cseed[iLayer].GetN2();
+ nlayers++;
+ }
+ }
+ if (nlayers < 3) {
+ continue;
+ }
+ rieman.Reset();
+ for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
+ if (cseed[iLayer].IsOK()) {
+ rieman.AddPoint(xcl[iLayer]
+ ,cseed[iLayer].GetYfitR(0)
+ ,cseed[iLayer].GetZProb()
+ ,1
+ ,10);
+ }
+ }
+ rieman.Update();
+
+ chi2RF = 0.0;
+ chi2ZF = 0.0;
+ for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
+ if (cseed[iLayer].IsOK()) {
+ cseed[iLayer].SetYref(0,rieman.GetYat(xcl[iLayer]));
+ chi2RF += (cseed[iLayer].GetYref(0) - cseed[iLayer].GetYfitR(0))
+ * (cseed[iLayer].GetYref(0) - cseed[iLayer].GetYfitR(0));
+ cseed[iLayer].SetYref(1,rieman.GetDYat(xcl[iLayer]));
+ cseed[iLayer].SetZref(0,rieman.GetZat(xcl[iLayer]));
+ chi2ZF += (cseed[iLayer].GetZref(0) - cseed[iLayer].GetMeanz())
+ * (cseed[iLayer].GetZref(0) - cseed[iLayer].GetMeanz());
+ cseed[iLayer].SetZref(1,rieman.GetDZat(xcl[iLayer]));
+ }
+ }
+ chi2RF /= TMath::Max((nlayers - 3.0),1.0);
+ chi2ZF /= TMath::Max((nlayers - 3.0),1.0);
+ curv = rieman.GetC();
+
+ Double_t xref2 = (xcl[2] + xcl[3]) * 0.5; // Middle of the chamber
+ Double_t dzmf = rieman.GetDZat(xref2);
+ Double_t zmf = rieman.GetZat(xref2);
+
+ //
+ // Fit hyperplane
+ //
+ Int_t npointsT = 0;
+ fitterTC.ClearPoints();
+ fitterT2.ClearPoints();
+ rieman2.Reset();
+
+ for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
+
+ if (!cseed[iLayer].IsOK()) {
+ continue;
+ }
+
+ for (Int_t itime = 0; itime < 25; itime++) {
+
+ if (!cseed[iLayer].IsUsable(itime)) {
+ continue;
+ }
+ // X relative to the middle chamber
+ Double_t x = cseed[iLayer].GetX(itime) + cseed[iLayer].GetX0() - xref2;
+ Double_t y = cseed[iLayer].GetY(itime);
+ Double_t z = cseed[iLayer].GetZ(itime);
+ // ExB correction to the correction
+ // Tilted rieman
+ Double_t uvt[6];
+ // Global x
+ Double_t x2 = cseed[iLayer].GetX(itime) + cseed[iLayer].GetX0();
+ Double_t t = 1.0 / (x2*x2 + y*y);
+ uvt[1] = t; // t
+ uvt[0] = 2.0 * x2 * uvt[1]; // u
+ uvt[2] = 2.0 * hL[iLayer] * uvt[1];
+ uvt[3] = 2.0 * hL[iLayer] * x * uvt[1];
+ uvt[4] = 2.0 * (y + hL[iLayer]*z) * uvt[1];
+ Double_t error = 2.0 * 0.2 * uvt[1];
+ fitterT2.AddPoint(uvt,uvt[4],error);
+
+ //
+ // Constrained rieman
+ //
+ z = cseed[iLayer].GetZ(itime);
+ uvt[0] = 2.0 * x2 * t; // u
+ uvt[1] = 2.0 * hL[iLayer] * x2 * uvt[1];
+ uvt[2] = 2.0 * (y + hL[iLayer] * (z - GetZ())) * t;
+ fitterTC.AddPoint(uvt,uvt[2],error);
+ rieman2.AddPoint(x2,y,z,1,10);
+ npointsT++;
+
+ }
+
+ } // Loop: iLayer
+
+ rieman2.Update();
+ fitterTC.Eval();
+ fitterT2.Eval();
+ Double_t rpolz0 = fitterT2.GetParameter(3);
+ Double_t rpolz1 = fitterT2.GetParameter(4);
+
+ //
+ // Linear fitter - not possible to make boundaries
+ // Do not accept non possible z and dzdx combinations
+ //
+ Bool_t acceptablez = kTRUE;
+ for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
+ if (cseed[iLayer].IsOK()) {
+ Double_t zT2 = rpolz0 + rpolz1 * (xcl[iLayer] - xref2);
+ if (TMath::Abs(cseed[iLayer].GetZProb() - zT2) > 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 (registered<kMaxSeed - 1) {
+ registered++;
+ cseed = seed[registered];
+ }
+
+ } // End of loop over layer 1
+
+ } // End of loop over layer 0
+
+ } // End of loop over layer 3
+
+ } // End of loop over seeding time bins
+
+ //
+ // Choose best
+ //
- return 0;
-}
+ TMath::Sort(registered,seedquality2,sort,kTRUE);
+ Bool_t signedseed[kMaxSeed];
+ for (Int_t i = 0; i < registered; i++) {
+ signedseed[i] = kFALSE;
+ }
-//______________________________________________________________________
-void AliTRDtracker::ReadClusters(TObjArray *array, const Char_t *filename)
-{
- //
- // Reads AliTRDclusters from file <filename>. The names of the cluster
- // tree and branches should match the ones used in
- // AliTRDclusterizer::WriteClusters()
- // if <array> == 0, clusters are added into AliTRDtracker fCluster array
- //
+ for (Int_t jter = 0; jter < 5; jter++) {
- TDirectory *savedir=gDirectory;
+ for (Int_t iseed = 0; iseed < registered; iseed++) {
+
+ Int_t index = sort[iseed];
+ if (signedseed[index]) {
+ continue;
+ }
+ Int_t labelsall[1000];
+ Int_t nlabelsall = 0;
+ Int_t naccepted = 0;;
+ Int_t sLayer = seedlayer[index];
+ Int_t ncl = 0;
+ Int_t nused = 0;
+ Int_t nlayers = 0;
+ Int_t findable = 0;
+
+ for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
+
+ if (TMath::Abs(seed[index][jLayer].GetYref(0) / xcl[jLayer]) < 0.15) {
+ findable++;
+ }
+ if (seed[index][jLayer].IsOK()) {
+ seed[index][jLayer].UpdateUsed();
+ ncl +=seed[index][jLayer].GetN2();
+ nused +=seed[index][jLayer].GetNUsed();
+ nlayers++;
+ // Cooking label
+ for (Int_t itime = 0; itime < 25; itime++) {
+ if (seed[index][jLayer].IsUsable(itime)) {
+ naccepted++;
+ for (Int_t ilab = 0; ilab < 3; ilab++) {
+ Int_t tindex = seed[index][jLayer].GetClusters(itime)->GetLabel(ilab);
+ if (tindex >= 0) {
+ labelsall[nlabelsall] = tindex;
+ nlabelsall++;
+ }
+ }
+ }
+ }
+ }
- TFile *file = TFile::Open(filename);
- if (!file->IsOpen()) {
- cerr<<"Can't open file with TRD clusters"<<endl;
- return;
- }
+ }
- Char_t treeName[12];
- sprintf(treeName,"TreeR%d_TRD",GetEventNumber());
- TTree *clusterTree = (TTree*) gDirectory->Get(treeName);
+ if (nused > 30) {
+ continue;
+ }
- if (!clusterTree) {
- cerr<<"AliTRDtracker::ReadClusters(): ";
- cerr<<"can't get a tree with clusters !\n";
- return;
- }
+ if (jter == 0) {
+ if (nlayers < 6) {
+ continue;
+ }
+ if (TMath::Log(0.000000001+seedquality2[index]) < -5.0) {
+ continue; // Gold
+ }
+ }
- TObjArray *clusterArray = new TObjArray(400);
+ if (jter == 1) {
+ if (nlayers < findable) {
+ continue;
+ }
+ if (TMath::Log(0.000000001+seedquality2[index]) < -4.0) {
+ continue;
+ }
+ }
- clusterTree->GetBranch("TRDcluster")->SetAddress(&clusterArray);
+ if (jter == 2) {
+ if ((nlayers == findable) ||
+ (nlayers == 6)) {
+ continue;
+ }
+ if (TMath::Log(0.000000001+seedquality2[index]) < -6.0) {
+ continue;
+ }
+ }
- Int_t nEntries = (Int_t) clusterTree->GetEntries();
- cout<<"found "<<nEntries<<" in clusterTree"<<endl;
+ if (jter == 3) {
+ if (TMath::Log(0.000000001+seedquality2[index]) < -5.0) {
+ continue;
+ }
+ }
- // Loop through all entries in the tree
- Int_t nbytes = 0;
- AliTRDcluster *c = 0;
+ if (jter == 4) {
+ if (TMath::Log(0.000000001+seedquality2[index]) - nused/(nlayers-3.0) < -15.0) {
+ continue;
+ }
+ }
- // printf("\n");
+ 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
+ }
+ }
+ }
- for (Int_t iEntry = 0; iEntry < nEntries; iEntry++) {
+ 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;
- // Import the tree
- nbytes += clusterTree->GetEvent(iEntry);
+ //
+ // 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";
+ }
+ }
- // Get the number of points in the detector
- Int_t nCluster = clusterArray->GetEntriesFast();
- // printf("\n Read %d clusters from entry %d", nCluster, iEntry);
+ 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 through all TRD digits
- for (Int_t iCluster = 0; iCluster < nCluster; iCluster++) {
- c = (AliTRDcluster*)clusterArray->UncheckedAt(iCluster);
- AliTRDcluster *co = new AliTRDcluster(*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);
- }
- }
+ } // Loop: iseed
- file->Close();
- delete clusterArray;
- savedir->cd();
+ } // Loop: jter
-}
+ } // End of loop over sectors
-void AliTRDtracker::ReadClusters(TObjArray *array, const TFile *inp)
+ delete [] pseed;
+
+ return 0;
+}
+
+//_____________________________________________________________________________
+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
+ // Reads AliTRDclusters from the file.
+ // The names of the cluster tree and branches
// should match the ones used in AliTRDclusterizer::WriteClusters()
//
- TDirectory *savedir=gDirectory;
-
- if (inp) {
- TFile *in=(TFile*)inp;
- if (!in->IsOpen()) {
- cerr<<"AliTRDtracker::ReadClusters(): input file is not open !\n";
- return;
- }
- else{
- in->cd();
- }
- }
-
- Char_t treeName[12];
- sprintf(treeName,"TreeR%d_TRD",GetEventNumber());
- TTree *clusterTree = (TTree*) gDirectory->Get(treeName);
-
- TObjArray *clusterArray = new TObjArray(400);
+ Int_t nsize = Int_t(clusterTree->GetTotBytes() / (sizeof(AliTRDcluster)));
+ TObjArray *clusterArray = new TObjArray(nsize+1000);
- clusterTree->GetBranch("TRDcluster")->SetAddress(&clusterArray);
-
- Int_t nEntries = (Int_t) clusterTree->GetEntries();
- // printf("found %d entries in %s.\n",nEntries,clusterTree->GetName());
+ 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 nbytes = 0;
- AliTRDcluster *c = 0;
- // printf("\n");
-
+ Int_t nEntries = (Int_t) clusterTree->GetEntries();
+ Int_t nbytes = 0;
+ AliTRDcluster *c = 0x0;
for (Int_t iEntry = 0; iEntry < nEntries; iEntry++) {
// Import the tree
// 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);
- AliTRDcluster *co = new AliTRDcluster(*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);
+ if(!(c = (AliTRDcluster *) clusterArray->UncheckedAt(iCluster))) continue;
+ array->AddLast(c);
+ //printf("Add cluster 0x%x.\n", c);
+ clusterArray->RemoveAt(iCluster);
}
- }
+ }
delete clusterArray;
- savedir->cd();
+
+ 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::CookLabel(AliKalmanTrack* pt, Float_t wrong) const
+//_____________________________________________________________________________
+void AliTRDtracker::CookLabel(AliKalmanTrack *pt, Float_t wrong) const
{
//
// This cooks a label. Mmmmh, smells good...
//
- Int_t label=123456789, index, i, j;
- Int_t ncl=pt->GetNumberOfClusters();
- const Int_t kRange = fTrSec[0]->GetOuterTimeBin()+1;
+ 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[kRange][2];
Int_t **s = new Int_t* [kRange];
- for (i=0; i<kRange; i++) {
+ 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;
+ for (i = 0; i < kRange; i++) {
+ s[i][0] = -1;
+ s[i][1] = 0;
}
- Int_t t0,t1,t2;
- for (i=0; i<ncl; i++) {
- index=pt->GetClusterIndex(i);
- AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index);
+ 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;
+ 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;
+ 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;
+ 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++) {
+ if (s[i][1] > max) {
+ max = s[i][1];
+ label = s[i][0];
}
}
- for (i=0; i<kRange; i++) {
+ for (i = 0; i < kRange; i++) {
delete []s[i];
}
delete []s;
- if ((1.- Float_t(max)/ncl) > wrong) label=-label;
+ if ((1.0 - Float_t(max)/ncl) > wrong) {
+ label = -label;
+ }
pt->SetLabel(label);
}
-
-//__________________________________________________________________
-void AliTRDtracker::UseClusters(const AliKalmanTrack* t, Int_t from) const
+//_____________________________________________________________________________
+void AliTRDtracker::UseClusters(const AliKalmanTrack *t, Int_t from) const
{
//
// Use clusters, but don't abuse them!
//
- 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);
- c->Use();
+ 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
{
//
//
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)
+{
+ //
+ // Copy constructor
+ //
+
+}
+
+//_____________________________________________________________________________
+AliTRDtracker::AliTRDtrackingSector
+ ::~AliTRDtrackingSector()
+{
+ //
+ // Destructor
+ //
+
+ for (Int_t i = 0; i < fN; i++) {
+ delete fLayers[i];
+ }
+
+}
+
+//_____________________________________________________________________________
+Int_t AliTRDtracker::AliTRDtrackingSector
+ ::CookTimeBinIndex(Int_t plane, Int_t localTB) const
+{
+ //
+ // Depending on the digitization parameters calculates global
+ // (i.e. for a whole TRD stack of 6 planes) time bin index for
+ // timebin <localTB> in plane <plane>
+ //
+
+ Int_t tbPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
+ Int_t gtb = (plane+1) * tbPerPlane - localTB - 1;
+ if (localTB < 0) {
+ return -1;
+ }
+ if (gtb < 0) {
+ return -1;
+ }
+
+ return gtb;
+
+}
+
+//_____________________________________________________________________________
+void AliTRDtracker::AliTRDtrackingSector
+ ::MapTimeBinLayers()
+{
+ //
+ // For all sensitive time bins sets corresponding layer index
+ // in the array fTimeBins
//
- // AliTRDpropagationLayer constructor
+
+ Int_t index;
+
+ for (Int_t i = 0; i < fN; i++) {
+
+ index = fLayers[i]->GetTimeBinIndex();
+
+ if (index < 0) {
+ continue;
+ }
+ if (index >= (Int_t) kMaxTimeBinIndex) {
+ //AliWarning(Form("Index %d exceeds allowed maximum of %d!\n"
+ // ,index,kMaxTimeBinIndex-1));
+ continue;
+ }
+
+ fTimeBinIndex[index] = i;
+
+ }
+
+}
+
+//_____________________________________________________________________________
+Int_t AliTRDtracker::AliTRDtrackingSector
+ ::GetLayerNumber(Double_t x) const
+{
+ //
+ // Returns the number of time bin which in radial position is closest to <x>
//
- fN = 0; fX = x; fdX = dx; fRho = rho; fX0 = radLength;
- fClusters = NULL; fIndex = NULL; fTimeBinIndex = tbIndex;
+ 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;
+ }
+ }
- for(Int_t i=0; i < (Int_t) kZones; i++) {
- fZc[i]=0; fZmax[i] = 0;
+ if (TMath::Abs(x - fLayers[m]->GetX()) > TMath::Abs(x - fLayers[m+1]->GetX())) {
+ return m + 1;
}
+ else {
+ return m;
+ }
+
+}
+
+//_____________________________________________________________________________
+Int_t AliTRDtracker::AliTRDtrackingSector
+ ::GetInnerTimeBin() const
+{
+ //
+ // Returns number of the innermost SENSITIVE propagation layer
+ //
+
+ return GetLayerNumber(0);
- fYmax = 0;
+}
+
+//_____________________________________________________________________________
+Int_t AliTRDtracker::AliTRDtrackingSector
+ ::GetOuterTimeBin() const
+{
+ //
+ // Returns number of the outermost SENSITIVE time bin
+ //
+
+ return GetLayerNumber(GetNumberOfTimeBins() - 1);
+
+}
+
+//_____________________________________________________________________________
+Int_t AliTRDtracker::AliTRDtrackingSector
+ ::GetNumberOfTimeBins() const
+{
+ //
+ // Returns number of SENSITIVE time bins
+ //
+
+ Int_t tb;
+ Int_t layer;
- if(fTimeBinIndex >= 0) {
- fClusters = new AliTRDcluster*[kMaxClusterPerTimeBin];
- fIndex = new UInt_t[kMaxClusterPerTimeBin];
+ for (tb = kMaxTimeBinIndex - 1; tb >= 0; tb--) {
+ layer = GetLayerNumber(tb);
+ if (layer >= 0) {
+ break;
+ }
}
- 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 tb + 1;
}
-//_______________________________________________________
-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
+ ::InsertLayer(AliTRDpropagationLayer *pl)
+{
+ //
+ // Insert layer <pl> in fLayers array.
+ // Layers are sorted according to X coordinate.
+ //
+
+ if (fN == ((Int_t) kMaxLayersPerSector)) {
+ //AliWarning("Too many layers !\n");
+ return;
+ }
+
+ if (fN == 0) {
+ fLayers[fN++] = pl;
+ return;
+ }
+
+ Int_t i = Find(pl->GetX());
+
+ memmove(fLayers+i+1,fLayers+i,(fN-i)*sizeof(AliTRDpropagationLayer*));
+
+ fLayers[i] = pl;
+ fN++;
+
+}
+
+//_____________________________________________________________________________
+Int_t AliTRDtracker::AliTRDtrackingSector
+ ::Find(Double_t x) const
+{
+ //
+ // Returns index of the propagation layer nearest to X
+ //
+
+ if (x <= fLayers[0]->GetX()) {
+ return 0;
+ }
+
+ if (x > fLayers[fN-1]->GetX()) {
+ return fN;
+ }
+
+ Int_t b = 0;
+ Int_t e = fN-1;
+ Int_t m = (b + e) / 2;
+
+ for (; b < e; m = (b + e) / 2) {
+ if (x > fLayers[m]->GetX()) {
+ b = m + 1;
+ }
+ else {
+ e = m;
+ }
+ }
+
+ return m;
+
+}
+
+//_____________________________________________________________________________
+Double_t AliTRDtracker::GetTiltFactor(const AliTRDcluster *c)
{
//
- // Sets hole in the layer
+ // Returns correction factor for tilted pads geometry
//
- fHole = kTRUE;
- fHoleZc = Zc;
- fHoleZmax = Zmax;
- fHoleYc = Yc;
- fHoleYmax = Ymax;
- fHoleRho = rho;
- fHoleX0 = radLength;
+
+ 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());
+
+ if (fNoTilt) {
+ h01 = 0;
+ }
+
+ return h01;
+
}
-
-//_______________________________________________________
-AliTRDtracker::AliTRDtrackingSector::AliTRDtrackingSector(AliTRDgeometry* geo, Int_t gs, AliTRDparameter* par)
+//_____________________________________________________________________________
+Int_t AliTRDtracker::FindClusters(Int_t sector, Int_t t0, Int_t t1
+ , AliTRDtrack *track
+ , Int_t *clusters
+ , AliTRDtracklet &tracklet)
{
//
- // AliTRDtrackingSector Constructor
- //
+ // Try to find the nearest clusters to the track in the time bins
+ // between <t0> and <t1>.
+ // 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;
+ }
- 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; icham<AliTRDgeometry::kNcham;icham++){
- holes[icham] = fGeom->IsHole(0,icham,gs);
- //printf("%d",holes[icham]);
- }
- //printf("\n");
-
- for(UInt_t i=0; i < kMaxTimeBinIndex; i++) fTimeBinIndex[i] = -1;
+ }
+ Double_t x0 = track->GetX();
+ Double_t sigmaz = TMath::Sqrt(TMath::Abs(track->GetSigmaZ2()));
+ Int_t nall = 0;
+ Int_t nfound = 0;
+ Double_t h01 = 0.0;
+ Int_t layer = -1;
+ Int_t detector = -1;
+ Float_t padlength = 0.0;
- AliTRDpropagationLayer* ppl;
+ AliTRDtrack track2(* track);
+ Float_t snpy = track->GetSnp();
+ Float_t tany = TMath::Sqrt(snpy*snpy / (1.0 - snpy*snpy));
+ if (snpy < 0.0) {
+ tany *= -1.0;
+ }
- Double_t x, xin, xout, dx, rho, radLength;
- Int_t steps;
+ 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;
+ }
- // set time bins in the gas of the TPC
+ for (Int_t it = 0; it < t1-t0; it++) {
- xin = 246.055; xout = 254.055; steps = 20; dx = (xout-xin)/steps;
- rho = 0.9e-3; radLength = 28.94;
+ Double_t maxChi2[2] = { fgkMaxChi2, fgkMaxChi2 };
+ AliTRDpropagationLayer &timeBin = *(fTrSec[sector]->GetLayer(it+t0));
+ if (timeBin == 0) {
+ continue; // No indexes1
+ }
- for(Int_t i=0; i<steps; i++) {
- x = xin + i*dx + dx/2;
- ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1);
- InsertLayer(ppl);
- }
+ 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++;
- // set time bins in the outer field cage vessel
+ //
+ // 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);
+ }
- 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);
+ if (c->GetY() > (y + road)) {
+ break;
+ }
- 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);
+ fHDeltaX->Fill(c->GetX() - x[it]);
- 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; i<steps; i++) {
- x = xin + i*dx + dx/2;
- ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1);
- InsertLayer(ppl);
- }
+ if (TMath::Abs(c->GetY()-y) < TMath::Abs(minY)) {
+ minY = c->GetY() - y;
+ minD[0] = c->GetY() - y;
+ minD[1] = c->GetZ() - z;
+ }
- 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);
+ checkPoint[0]++;
- 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);
+ fHMinZ->Fill(c->GetZ() - z);
+ if ((c->GetZ() - z) * (c->GetZ() - z) > 2 * (12.0 * sz2)) {
+ continue;
+ }
+ checkPoint[1]++;
+ Double_t dist = TMath::Abs(c->GetZ() - z);
+ if (dist > (0.5 * padlength + 6.0 * sigmaz)) {
+ continue; // 6 sigma boundary cut
+ }
+ checkPoint[2]++;
+
+ // Sigma boundary cost function
+ Double_t cost = 0.0;
+ if (dist> (0.5 * padlength - sigmaz)){
+ cost = (dist - 0.5*padlength) / (2.0 * sigmaz);
+ if (cost > -1) {
+ cost = (cost + 1.0) * (cost + 1.0);
+ }
+ else {
+ cost = 0.0;
+ }
+ }
+ chi2 = track2.GetPredictedChi2(c,h01) + cost;
+ clfound++;
- // set time bins in CO2
+ 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;
+ }
+ }
- xin = xout; xout = 275.0;
- steps = 50; dx = (xout - xin)/steps;
- rho = 1.977e-3; radLength = 36.2;
-
- for(Int_t i=0; i<steps; i++) {
- x = xin + i*dx + dx/2;
- ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1);
- InsertLayer(ppl);
- }
+ 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);
- // set time bins in the outer containment vessel
+ }
+
+ for(int iCheckPoint = 0; iCheckPoint<4; iCheckPoint++) {
+ fHFindCl[iCheckPoint]->Fill(checkPoint[iCheckPoint]);
+ }
- 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);
+ if (checkPoint[3]) {
+ if (track->GetSignedPt() > 0) {
+ fHMinYPos->Fill(minY);
+ }
+ else {
+ fHMinYNeg->Fill(minY);
+ }
+ fHMinD->Fill(minD[0],minD[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);
+ if (cl[0][it]) {
+ nfound++;
+ xmean += x[it];
+ }
- 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);
+ }
- 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<steps; i++) {
- x = xin + i*dx + dx/2;
- ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1);
- InsertLayer(ppl);
+ if (nfound < 4) {
+ return 0;
}
+ xmean /= Float_t(nfound); // Middle x
+ track2.PropagateTo(xmean); // Propagate track to the center
+
+ //
+ // Choose one of the variants
+ //
+ Float_t sumz = 0.0;
+ Float_t sum = 0.0;
+ Double_t sumdy = 0.0;
+ Double_t sumdy2 = 0.0;
+ Double_t sumx = 0.0;
+ Double_t sumxy = 0.0;
+ Double_t sumx2 = 0.0;
+ Double_t mpads = 0.0;
- 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);
+ Int_t changes[kN2];
- 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 = 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 ngood[kN2];
+ Int_t nbad[kN2];
- Double_t xtrd = (Double_t) fGeom->Rmin();
+ Double_t meanz[kN2];
+ Double_t moffset[kN2]; // Mean offset
+ Double_t mean[kN2]; // Mean value
+ Double_t angle[kN2]; // Angle
- // 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; i<steps; i++) {
- x = xin + i*dx + dx/2;
- ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1);
- InsertLayer(ppl);
- }
+ 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
- // Double_t alpha=AliTRDgeometry::GetAlpha();
+ for (Int_t it = 0; it < kN2; it++) {
- // add layers for each of the planes
+ ngood[it] = 0;
+ nbad[it] = 0;
- 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;
+ meanz[it] = 0.0;
+ moffset[it] = 0.0; // Mean offset
+ mean[it] = 0.0; // Mean value
+ angle[it] = 0.0; // Angle
- 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
+ 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 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; i<steps; i++) {
- x = xin + i*dx + dx/2;
- ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1);
- InsertLayer(ppl);
- }
+ sigmas[it] = 1.0e5;
+ tchi2s[it] = 1.0e5; // Chi2s for tracklet
- ymax = fGeom->GetChamberWidth(plane)/2.;
- ymaxsensitive = (fPar->GetColPadSize(plane)*fPar->GetColMax(plane)-4)/2.;
-
- for(Int_t ch = 0; ch < kNchambers; ch++) {
- zmax[ch] = fGeom->GetChamberLength(plane,ch)/2;
- Float_t pad = fPar->GetRowPadSize(plane,ch,0);
- 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();
+ }
+ //
+ // Calculate zmean
+ //
+ for (Int_t it = 0; it < t1 - t0; it++) {
+ if (!cl[0][it]) {
+ continue;
+ }
+ for (Int_t dt = -3; dt <= 3; dt++) {
+ if (it+dt < 0) {
+ continue;
+ }
+ if (it+dt > t1-t0) {
+ continue;
+ }
+ if (!cl[0][it+dt]) {
+ continue;
+ }
+ zmean[it] += cl[0][it+dt]->GetZ();
+ nmean[it] += 1.0;
}
+ zmean[it] /= nmean[it];
+ }
- dx = fPar->GetTimeBinSize();
- rho = 0.00295 * 0.85; radLength = 11.0;
+ for (Int_t it = 0; it < t1 - t0; it++) {
- 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);
+ best[0][it] = 0;
- 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->GetTimeBinSize();
- 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; i<steps; i++) {
- x = xin + i*dx + dx/2;
- ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1);
- ppl->SetYmax(ymax,ymaxsensitive);
- ppl->SetZ(zc, zmax,zmax);
- ppl->SetHoles(holes);
- InsertLayer(ppl);
+ 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
}
- // 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<steps; i++) {
- x = xin + i*dx + dx/2;
- ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1);
- InsertLayer(ppl);
+ // 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;
+ }
}
- }
- // Space between the TRD and RICH
- Double_t xRICH = 500.;
- xin = xout; xout = xRICH;
- steps = 200; dx = (xout - xin)/steps; rho = 1.29e-3; radLength = 36.66;
- for(Int_t i=0; i<steps; i++) {
- x = xin + i*dx + dx/2;
- ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,-1);
- InsertLayer(ppl);
}
- MapTimeBinLayers();
- delete [] zc;
- delete [] zmax;
-
-}
-
-//______________________________________________________
-
-Int_t AliTRDtracker::AliTRDtrackingSector::CookTimeBinIndex(Int_t plane, Int_t localTB) const
-{
//
- // depending on the digitization parameters calculates "global"
- // time bin index for timebin <localTB> in plane <plane>
+ // Iterative choice of "best path"
//
+ Int_t label = TMath::Abs(track->GetLabel());
+ Int_t bestiter = 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->GetTimeBinSize();
-
- 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);
+ for (Int_t iter = 0; iter < 9; iter++) {
- Int_t tbPerPlane = TMath::Min(tbAmp,maxAmp) + TMath::Min(tbDrift,maxDrift);
+ 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 gtb = (plane+1) * tbPerPlane - localTB - 1 - TMath::Min(tbAmp,maxAmp);
+ if (!cl[best[iter][it]][it]) {
+ continue;
+ }
- if((localTB < 0) &&
- (TMath::Abs(localTB) > TMath::Min(tbAmp,maxAmp))) return -1;
- if(localTB >= TMath::Min(tbDrift,maxDrift)) return -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]++;
+ }
- return gtb;
+ // Distance to reference x
+ Double_t dx = x[it]-xmean;
+ sumz += cl[best[iter][it]][it]->GetZ();
+ sum++;
+ sumdy += dy[best[iter][it]][it];
+ sumdy2 += dy[best[iter][it]][it]*dy[best[iter][it]][it];
+ sumx += dx;
+ sumx2 += dx*dx;
+ sumxy += dx*dy[best[iter][it]][it];
+ mpads += cl[best[iter][it]][it]->GetNPads();
+ if ((cl[best[iter][it]][it]->GetLabel(0) == label) ||
+ (cl[best[iter][it]][it]->GetLabel(1) == label) ||
+ (cl[best[iter][it]][it]->GetLabel(2) == label)) {
+ ngood[iter]++;
+ }
+ else {
+ nbad[iter]++;
+ }
+ }
-}
+ //
+ // Calculates line parameters
+ //
+ Double_t det = sum*sumx2 - sumx*sumx;
+ angle[iter] = (sum*sumxy - sumx*sumdy) / det;
+ mean[iter] = (sumx2*sumdy - sumx*sumxy) / det;
+ meanz[iter] = sumz / sum;
+ moffset[iter] = sumdy / sum;
+ mpads /= sum; // Mean number of pads
+
+ Double_t sigma2 = 0.0; // Normalized residuals - for line fit
+ Double_t sigma1 = 0.0; // Normalized residuals - constant fit
+
+ for (Int_t it = 0; it < t1 - t0; it++) {
+ if (!cl[best[iter][it]][it]) {
+ continue;
+ }
+ Double_t dx = x[it] - xmean;
+ Double_t ytr = mean[iter] + angle[iter] * dx;
+ sigma2 += (dy[best[iter][it]][it] - ytr)
+ * (dy[best[iter][it]][it] - ytr);
+ sigma1 += (dy[best[iter][it]][it] - moffset[iter])
+ * (dy[best[iter][it]][it] - moffset[iter]);
+ sum++;
+ }
+ sigma2 /= (sum - 2); // Normalized residuals
+ sigma1 /= (sum - 1); // Normalized residuals
+ smean[iter] = sigma2 * (sumx2 / det); // Estimated error2 of mean
+ sangle[iter] = sigma2 * ( sum / det); // Estimated error2 of angle
+ smeanangle[iter] = sigma2 * (-sumx / det); // Correlation
+ sigmas[iter] = TMath::Sqrt(sigma1);
+ smoffset[iter] = (sigma1 / sum) + 0.01*0.01; // Sigma of mean offset + unisochronity sigma
-//______________________________________________________
+ //
+ // Iterative choice of "better path"
+ //
+ for (Int_t it = 0; it < t1 - t0; it++) {
-void AliTRDtracker::AliTRDtrackingSector::MapTimeBinLayers()
-{
- //
- // For all sensitive time bins sets corresponding layer index
- // in the array fTimeBins
- //
+ if (!cl[best[iter][it]][it]) {
+ continue;
+ }
- Int_t index;
+ // 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;
+ }
+ }
- 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());
+ best[iter+1][it] = ihbest;
- 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;
+ //
+ // 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;
- 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);
- }
- 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);
+ 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;
}
- }
-}
-
-
-//______________________________________________________
+ }
-Int_t AliTRDtracker::AliTRDtrackingSector::GetLayerNumber(Double_t x) const
-{
- //
- // Returns the number of time bin which in radial position is closest to <x>
//
+ // Set clusters
+ //
+ Double_t sigma2 = sigmas[0]; // Choose as sigma from 0 iteration
+ Short_t maxpos = -1;
+ Float_t maxcharge = 0.0;
+ Short_t maxpos4 = -1;
+ Float_t maxcharge4 = 0.0;
+ Short_t maxpos5 = -1;
+ Float_t maxcharge5 = 0.0;
- if(x >= fLayers[fN-1]->GetX()) return fN-1;
- if(x <= fLayers[0]->GetX()) return 0;
-
- Int_t b=0, e=fN-1, m=(b+e)/2;
- for (; b<e; m=(b+e)/2) {
- if (x > fLayers[m]->GetX()) b=m+1;
- else e=m;
+ Double_t exB = AliTRDcalibDB::Instance()->GetOmegaTau(AliTRDcalibDB::Instance()->GetVdrift(0,0,0)
+ ,-AliTracker::GetBz()*0.1);
+ Double_t expectederr = sigma2*sigma2 + 0.01*0.01;
+ if (mpads > 3.5) {
+ expectederr += (mpads - 3.5) * 0.04;
+ }
+ if (changes[bestiter] > 1) {
+ expectederr += changes[bestiter] * 0.01;
}
- if(TMath::Abs(x - fLayers[m]->GetX()) >
- TMath::Abs(x - fLayers[m+1]->GetX())) return m+1;
- else return m;
+ expectederr += (0.03 * (tany-exB)*(tany-exB)) * 15.0;
-}
+ for (Int_t it = 0; it < t1 - t0; it++) {
-//______________________________________________________
+ if (!cl[best[bestiter][it]][it]) {
+ continue;
+ }
-Int_t AliTRDtracker::AliTRDtrackingSector::GetInnerTimeBin() const
-{
- //
- // Returns number of the innermost SENSITIVE propagation layer
- //
+ // Set cluster error
+ cl[best[bestiter][it]][it]->SetSigmaY2(expectederr);
+ if (!cl[best[bestiter][it]][it]->IsUsed()) {
+ cl[best[bestiter][it]][it]->SetY(cl[best[bestiter][it]][it]->GetY());
+ }
- return GetLayerNumber(0);
-}
+ // 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();
+ }
+ }
-Int_t AliTRDtracker::AliTRDtrackingSector::GetOuterTimeBin() const
-{
- //
- // Returns number of the outermost SENSITIVE time bin
- //
+ // 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();
+ }
+ }
- return GetLayerNumber(GetNumberOfTimeBins() - 1);
-}
+ if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge5) {
+ if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 5) {
+ maxcharge5 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
+ maxpos5 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
+ }
+ }
-//______________________________________________________
+ clusters[it+t0] = indexes[best[bestiter][it]][it];
-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;
+ // 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);
+ }
}
- return tb+1;
-}
-//______________________________________________________
+ 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";
+ }
+
+ return nfound;
-void AliTRDtracker::AliTRDtrackingSector::InsertLayer(AliTRDpropagationLayer* pl)
-{
+}
+
+//_____________________________________________________________________________
+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
//
- // Insert layer <pl> in fLayers array.
- // Layers are sorted according to X coordinate.
- if ( fN == ((Int_t) kMaxLayersPerSector)) {
- printf("AliTRDtrackingSector::InsertLayer(): Too many layers !\n");
- return;
+ if (n <= 0) {
+ return 0;
}
- if (fN==0) {fLayers[fN++] = pl; return;}
- Int_t i=Find(pl->GetX());
-
- memmove(fLayers+i+1 ,fLayers+i,(fN-i)*sizeof(AliTRDpropagationLayer*));
- fLayers[i]=pl; fN++;
-}
+ Int_t *sindexS = new Int_t[n]; // Temporary array for sorting
+ Int_t *sindexF = new Int_t[2*n];
+ for (Int_t i = 0; i < n; i++) {
+ sindexF[i] = 0;
+ }
-//______________________________________________________
+ TMath::Sort(n,inlist,sindexS,down);
+
+ Int_t last = inlist[sindexS[0]];
+ Int_t val = last;
+ sindexF[0] = 1;
+ sindexF[0+n] = last;
+ Int_t countPos = 0;
+
+ // Find frequency
+ for (Int_t i = 1; i < n; i++) {
+ val = inlist[sindexS[i]];
+ if (last == val) {
+ sindexF[countPos]++;
+ }
+ else {
+ countPos++;
+ sindexF[countPos+n] = val;
+ sindexF[countPos]++;
+ last = val;
+ }
+ }
+ if (last == val) {
+ countPos++;
+ }
-Int_t AliTRDtracker::AliTRDtrackingSector::Find(Double_t x) const
-{
- //
- // Returns index of the propagation layer nearest to X
- //
+ // Sort according frequency
+ TMath::Sort(countPos,sindexF,sindexS,kTRUE);
- 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<e; m=(b+e)/2) {
- if (x > fLayers[m]->GetX()) b=m+1;
- else e=m;
+ for (Int_t i = 0; i < countPos; i++) {
+ outlist[2*i ] = sindexF[sindexS[i]+n];
+ outlist[2*i+1] = sindexF[sindexS[i]];
}
- 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]);
- }
-}
-//______________________________________________________
+ delete [] sindexS;
+ delete [] sindexF;
+
+ return countPos;
-void AliTRDtracker::AliTRDpropagationLayer::SetHoles(Bool_t *holes)
-{
- //
- // 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;
- }
}
-
-
-void AliTRDtracker::AliTRDpropagationLayer::GetPropagationParameters(
- Double_t y, Double_t z, Double_t &dx, Double_t &rho, Double_t &radLength,
- Bool_t &lookForCluster) const
+//_____________________________________________________________________________
+AliTRDtrack *AliTRDtracker::RegisterSeed(AliTRDseed *seeds, Double_t *params)
{
//
- // Returns radial step <dx>, density <rho>, rad. length <radLength>,
- // and sensitivity <lookForCluster> in point <y,z>
+ // Build a TRD track out of tracklet candidates
//
-
- dx = fdX;
- rho = fRho;
- radLength = fX0;
- lookForCluster = kFALSE;
+ // Parameters :
+ // seeds : array of tracklets
+ // params : track parameters (see MakeSeeds() function body for a detailed description)
//
- // check dead regions in sensitive volume
- if(fTimeBinIndex >= 0) {
- //
- Int_t zone=-1;
- for(Int_t ch = 0; ch < (Int_t) kZones; ch++) {
- if (TMath::Abs(z - fZc[ch]) < fZmaxSensitive[ch]){
- zone = ch;
- lookForCluster = !(fIsHole[zone]);
- if(TMath::Abs(y) > fYmaxSensitive){
- lookForCluster = kFALSE;
- }
- if (fIsHole[zone]) {
- //if hole
- rho = 1.29e-3;
- radLength = 36.66;
- }
- }
- }
- return;
- }
+ // Output :
+ // The TRD track.
//
+ // Detailed description
//
- // check hole
- if (fHole==kFALSE) return;
+ // To be discussed with Marian !!
//
- 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;
+
+ AliTRDcalibDB *cal = AliTRDcalibDB::Instance();
+ Int_t nTimeBins = cal->GetNumberOfTimeBins();
+
+
+ Double_t alpha = AliTRDgeometry::GetAlpha();
+ Double_t shift = AliTRDgeometry::GetAlpha()/2.0;
+ Double_t c[15];
+
+ c[ 0] = 0.2;
+ c[ 1] = 0.0; c[ 2] = 2.0;
+ c[ 3] = 0.0; c[ 4] = 0.0; c[ 5] = 0.02;
+ c[ 6] = 0.0; c[ 7] = 0.0; c[ 8] = 0.0; c[ 9] = 0.1;
+ c[10] = 0.0; c[11] = 0.0; c[12] = 0.0; c[13] = 0.0; c[14] = params[5]*params[5]*0.01;
+
+ Int_t index = 0;
+ AliTRDcluster *cl = 0;
+
+ for (Int_t ilayer = 0; ilayer < 6; ilayer++) {
+
+ if (seeds[ilayer].IsOK()) {
+ for (Int_t itime = nTimeBins-1; itime > 0; itime--) {
+ if (seeds[ilayer].GetIndexes(itime) > 0) {
+ index = seeds[ilayer].GetIndexes(itime);
+ cl = seeds[ilayer].GetClusters(itime);
+ //printf("l[%d] index[%d] tb[%d] cptr[%p]\n", ilayer, index, itime, cl);
+ break;
+ }
}
}
+ if (index > 0) {
+ break;
+ }
}
- 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;
+ if (cl == 0) {
+ return 0;
}
- return zone;
-}
+ 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);
-//______________________________________________________
-
-void AliTRDtracker::AliTRDpropagationLayer::InsertCluster(AliTRDcluster* c,
- UInt_t index) {
-
-// 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;
+ Int_t rc = FollowBackProlongation(*track);
+ if (rc < 30) {
+ delete track;
+ track = 0;
}
-
- if (fN== (Int_t) kMaxClusterPerTimeBin) {
- printf("AliTRDpropagationLayer::InsertCluster(): Too many clusters !\n");
- return;
+ else {
+ track->CookdEdx();
+ track->CookdEdxTimBin(-1);
+ CookLabel(track,0.9);
}
- 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 track;
-Int_t AliTRDtracker::AliTRDpropagationLayer::Find(Double_t y) const {
-
-// Returns index of the cluster nearest in Y
+}
- 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<e; m=(b+e)/2) {
- if (y > fClusters[m]->GetY()) b=m+1;
- else e=m;
+//_____________________________________________________________________________
+void AliTRDtracker::InitLogHists()
+{
+ //
+ // Create the log histograms
+ //
+
+ fHBackfit = new TH1D("logTRD_backfit" ,""
+ , 40,-0.5, 39.5);
+ fHRefit = new TH1D("logTRD_refit" ,""
+ , 40,-0.5, 39.5);
+ fHClSearch = new TH1D("logTRD_clSearch",""
+ , 60,-0.5, 59.5);
+
+ fHX = new TH1D("logTRD_X" ,";x (cm)"
+ , 200, 50, 400);
+ fHNCl = new TH1D("logTRD_ncl" ,""
+ , 40,-0.5, 39.5);
+ fHNClTrack = new TH1D("logTRD_nclTrack",""
+ , 180,-0.5,179.5);
+
+ fHMinYPos = new TH1D("logTRD_minYPos" ,";#delta Y (cm)"
+ , 400, -6, 6);
+ fHMinYNeg = new TH1D("logTRD_minYNeg" ,";#delta Y (cm)"
+ , 400, -6, 6);
+ fHMinZ = new TH1D("logTRD_minZ" ,";#delta Z (cm)"
+ , 400, -20, 20);
+ fHMinD = new TH2D("logTRD_minD" ,";#delta Y (cm);#delta Z (cm)"
+ , 100, -6, 6
+ , 100, -50, 50);
+
+ fHDeltaX = new TH1D("logTRD_deltaX" ,";#delta X (cm)"
+ , 100, -5, 5);
+ fHXCl = new TH1D("logTRD_xCl" ,";cluster x position (cm)"
+ ,1000, 280, 380);
+
+ const Char_t *nameFindCl[4] = { "logTRD_clY"
+ , "logTRD_clZ"
+ , "logTRD_clB"
+ , "logTRD_clG" };
+
+ for (Int_t i = 0; i < 4; i++) {
+ fHFindCl[i] = new TH1D(nameFindCl[i],"",30,-0.5,29.5);
}
- return m;
-}
-
-//---------------------------------------------------------
-
-Double_t AliTRDtracker::GetTiltFactor(const AliTRDcluster* c) {
-//
-// Returns correction factor for tilted pads geometry
-//
-
- Double_t h01 = sin(TMath::Pi() / 180.0 * fPar->GetTiltingAngle());
- Int_t det = c->GetDetector();
- Int_t plane = fGeom->GetPlane(det);
- if((plane == 1) || (plane == 3) || (plane == 5)) h01=-h01;
-
- if(fNoTilt) h01 = 0;
-
- return h01;
}
+//_____________________________________________________________________________
+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();
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff