* provided "as is" without express or implied warranty. *
**************************************************************************/
-/*
-$Log$
-Revision 1.7 2000/12/08 16:07:02 cblume
-Update of the tracking by Sergei
+/* $Id$ */
-Revision 1.6 2000/11/30 17:38:08 cblume
-Changes to get in line with new STEER and EVGEN
+///////////////////////////////////////////////////////////////////////////////
+// //
+// The standard TRD tracker //
+// Based on Kalman filltering approach //
+// //
+// Authors: //
+// M. Ivanov (Marian.Ivanov@cern.ch) //
+// Y. Belikov (Jouri.Belikov@cern.ch) //
+// //
+///////////////////////////////////////////////////////////////////////////////
-Revision 1.5 2000/11/14 14:40:27 cblume
-Correction for the Sun compiler (kTRUE and kFALSE)
-
-Revision 1.4 2000/11/10 14:57:52 cblume
-Changes in the geometry constants for the DEC compiler
-
-Revision 1.3 2000/10/15 23:40:01 cblume
-Remove AliTRDconst
-
-Revision 1.2 2000/10/06 16:49:46 cblume
-Made Getters const
-
-Revision 1.1.2.2 2000/10/04 16:34:58 cblume
-Replace include files by forward declarations
-
-Revision 1.1.2.1 2000/09/22 14:47:52 cblume
-Add the tracking code
-
-*/
-
-#include <iostream.h>
+#include <Riostream.h>
#include <TFile.h>
-#include <TROOT.h>
#include <TBranch.h>
-#include <TTree.h>
+#include <TTree.h>
+#include <TObjArray.h>
+#include <TTreeStream.h>
+#include <TGraph.h>
+#include <TLinearFitter.h>
+#include <TH1D.h>
+#include <TH2D.h>
+
+#include "AliESD.h"
+#include "AliAlignObj.h"
+#include "AliRieman.h"
+#include "AliTrackPointArray.h"
-#include "AliRun.h"
-#include "AliTRD.h"
#include "AliTRDgeometry.h"
-#include "AliTRDrecPoint.h"
+#include "AliTRDpadPlane.h"
+#include "AliTRDgeometry.h"
#include "AliTRDcluster.h"
#include "AliTRDtrack.h"
-#include "AliTRDtrackingSector.h"
-#include "AliTRDtimeBin.h"
-
+#include "AliTRDseed.h"
+#include "AliTRDcalibDB.h"
+#include "AliTRDCommonParam.h"
#include "AliTRDtracker.h"
+#include "AliTRDReconstructor.h"
+#include "AliTRDCalibra.h"
+ClassImp(AliTRDtracker)
-ClassImp(AliTRDtracker)
-
- const Int_t AliTRDtracker::fSeedGap = 35;
- const Int_t AliTRDtracker::fSeedStep = 5;
-
-
- const Float_t AliTRDtracker::fMinClustersInTrack = 0.5;
- const Float_t AliTRDtracker::fMinClustersInSeed = 0.5;
- const Float_t AliTRDtracker::fSeedDepth = 0.5;
- const Float_t AliTRDtracker::fSkipDepth = 0.2;
- const Float_t AliTRDtracker::fMaxSeedDeltaZ = 30.;
- const Float_t AliTRDtracker::fMaxSeedC = 0.01;
- const Float_t AliTRDtracker::fMaxSeedTan = 1.2;
- const Float_t AliTRDtracker::fMaxSeedVertexZ = 200.;
- const Float_t AliTRDtracker::fLabelFraction = 0.5;
- const Float_t AliTRDtracker::fWideRoad = 30.;
+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; // Corresponds to tan = 3
+const Double_t AliTRDtracker::fgkMaxStep = 2.0; // Maximal step size in propagation
- const Double_t AliTRDtracker::fMaxChi2 = 12.;
- const Double_t AliTRDtracker::fSeedErrorSY = 0.1;
- const Double_t AliTRDtracker::fSeedErrorSY3 = 2.5;
- const Double_t AliTRDtracker::fSeedErrorSZ = 0.1;
-
-//____________________________________________________________________
+//_____________________________________________________________________________
AliTRDtracker::AliTRDtracker()
+ :AliTracker()
+ ,fHBackfit(0x0)
+ ,fHClSearch(0x0)
+ ,fHRefit(0x0)
+ ,fHX(0x0)
+ ,fHNCl(0x0)
+ ,fHNClTrack(0x0)
+ ,fHMinYPos(0x0)
+ ,fHMinYNeg(0x0)
+ ,fHMinZ(0x0)
+ ,fHMinD(0x0)
+ ,fHDeltaX(0x0)
+ ,fHXCl(0x0)
+ ,fGeom(0)
+ ,fNclusters(0)
+ ,fClusters(0)
+ ,fNseeds(0)
+ ,fSeeds(0)
+ ,fNtracks(0)
+ ,fTracks(0)
+ ,fTimeBinsPerPlane(0)
+ ,fAddTRDseeds(kFALSE)
+ ,fNoTilt(kFALSE)
+ ,fDebugStreamer(0)
{
//
// Default constructor
- //
+ //
- fEvent = 0;
- fGeom = NULL;
+ 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;
+ }
+ }
- fNclusters = 0;
- fClusters = NULL;
- fNseeds = 0;
- fSeeds = NULL;
- fNtracks = 0;
- fTracks = NULL;
+ InitLogHists();
-}
+}
-//____________________________________________________________________
-AliTRDtracker::AliTRDtracker(const Text_t* name, const Text_t* title)
- :TNamed(name, title)
+//_____________________________________________________________________________
+AliTRDtracker::AliTRDtracker(const AliTRDtracker &t)
+ :AliTracker(t)
+ ,fHBackfit(0x0)
+ ,fHClSearch(0x0)
+ ,fHRefit(0x0)
+ ,fHX(0x0)
+ ,fHNCl(0x0)
+ ,fHNClTrack(0x0)
+ ,fHMinYPos(0x0)
+ ,fHMinYNeg(0x0)
+ ,fHMinZ(0x0)
+ ,fHMinD(0x0)
+ ,fHDeltaX(0x0)
+ ,fHXCl(0x0)
+ ,fGeom(0)
+ ,fNclusters(0)
+ ,fClusters(0)
+ ,fNseeds(0)
+ ,fSeeds(0)
+ ,fNtracks(0)
+ ,fTracks(0)
+ ,fTimeBinsPerPlane(0)
+ ,fAddTRDseeds(kFALSE)
+ ,fNoTilt(kFALSE)
+ ,fDebugStreamer(0)
{
- fEvent = 0;
- fGeom = NULL;
-
- fNclusters = 0;
- fClusters = new TObjArray(2000);
- fNseeds = 0;
- fSeeds = new TObjArray(20000);
- fNtracks = 0;
- fTracks = new TObjArray(10000);
-
-}
+ //
+ // Copy constructor
+ //
-//___________________________________________________________________
-AliTRDtracker::~AliTRDtracker()
-{
- delete fClusters;
- delete fTracks;
- delete fSeeds;
- delete fGeom;
-}
+}
-//___________________________________________________________________
-void AliTRDtracker::Clusters2Tracks()
+//_____________________________________________________________________________
+AliTRDtracker::AliTRDtracker(const TFile *geomfile)
+ :AliTracker()
+ ,fHBackfit(0x0)
+ ,fHClSearch(0x0)
+ ,fHRefit(0x0)
+ ,fHX(0x0)
+ ,fHNCl(0x0)
+ ,fHNClTrack(0x0)
+ ,fHMinYPos(0x0)
+ ,fHMinYNeg(0x0)
+ ,fHMinZ(0x0)
+ ,fHMinD(0x0)
+ ,fHDeltaX(0x0)
+ ,fHXCl(0x0)
+ ,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)
+ ,fDebugStreamer(0)
{
- Int_t inner, outer;
- Int_t fTotalNofTimeBins = fGeom->GetTimeMax() * AliTRDgeometry::Nplan();
- Int_t nSteps = (Int_t) (fTotalNofTimeBins * fSeedDepth)/fSeedStep;
+ //
+ // Main constructor
+ //
+
+ TDirectory *savedir = gDirectory;
+ TFile *in = (TFile *) geomfile;
+
+ if (!in->IsOpen()) {
+ AliWarning("geometry file is not open!\n");
+ AliWarning("FULL TRD geometry and DEFAULT TRD parameter will be used\n");
+ }
+ else {
+ in->cd();
+ fGeom = (AliTRDgeometry *) in->Get("TRDgeometry");
+ }
- for(Int_t i=0; i<nSteps; i++) {
- printf("step %d out of %d \n", i+1, nSteps);
- outer=fTotalNofTimeBins-1-i*fSeedStep; inner=outer-fSeedGap;
- MakeSeeds(inner,outer);
- FindTracks();
+ if (!fGeom) {
+ AliWarning("Cannot find TRD geometry!\n");
+ fGeom = new AliTRDgeometry();
}
-}
-
-//_____________________________________________________________________
-Double_t AliTRDtracker::ExpectedSigmaY2(Double_t r, Double_t tgl, Double_t pt)
-{
- // Parametrised "expected" error of the cluster reconstruction in Y
+ fGeom->ReadGeoMatrices();
- Double_t s = 0.2;
- return s;
-}
+ savedir->cd();
-//_____________________________________________________________________
-Double_t AliTRDtracker::ExpectedSigmaZ2(Double_t r, Double_t tgl)
-{
- // Parametrised "expected" error of the cluster reconstruction in Z
+ for (Int_t geomS = 0; geomS < kTrackingSectors; geomS++) {
+ Int_t trS = CookSectorIndex(geomS);
+ fTrSec[trS] = new AliTRDtrackingSector(fGeom,geomS);
+ for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) {
+ fHoles[icham][trS] = fGeom->IsHole(0,icham,geomS);
+ }
+ }
- Double_t s, pad = fGeom->GetRowPadSize();
- s = pad * pad /12.;
- return s;
-}
+ AliTRDpadPlane *padPlane = AliTRDCommonParam::Instance()->GetPadPlane(0,0);
+ Float_t tiltAngle = TMath::Abs(padPlane->GetTiltingAngle());
+ if (tiltAngle < 0.1) {
+ fNoTilt = kTRUE;
+ }
-//_____________________________________________________________________
-inline Double_t f1trd(Double_t x1,Double_t y1,
- Double_t x2,Double_t y2,
- Double_t x3,Double_t y3)
-{
- // Initial approximation of the track curvature
- // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
+ fTimeBinsPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
- 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));
+ fDebugStreamer = new TTreeSRedirector("TRDdebug.root");
- Double_t xr=TMath::Abs(d/(d*x1-a)), yr=d/(d*y1-b);
+ savedir->cd();
+
+ InitLogHists();
- 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)
+//_____________________________________________________________________________
+AliTRDtracker::~AliTRDtracker()
{
- // Initial approximation of the track curvature times center of curvature
- // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
+ //
+ // Destructor of AliTRDtracker
+ //
- 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));
+ if (fClusters) {
+ fClusters->Delete();
+ delete fClusters;
+ }
- Double_t xr=TMath::Abs(d/(d*x1-a)), yr=d/(d*y1-b);
+ if (fTracks) {
+ fTracks->Delete();
+ delete fTracks;
+ }
- return -a/(d*y1-b)*xr/sqrt(xr*xr+yr*yr);
-}
+ if (fSeeds) {
+ fSeeds->Delete();
+ delete fSeeds;
+ }
-//_____________________________________________________________________
-inline Double_t f3trd(Double_t x1,Double_t y1,
- Double_t x2,Double_t y2,
- Double_t z1,Double_t z2)
-{
- // Initial approximation of the tangent of the track dip angle
- // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
+ delete fGeom;
- return (z1 - z2)/sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2));
-}
+ for (Int_t geomS = 0; geomS < kTrackingSectors; geomS++) {
+ delete fTrSec[geomS];
+ }
+ if (fDebugStreamer) {
+ delete fDebugStreamer;
+ }
-//___________________________________________________________________
+}
-Int_t AliTRDtracker::FindProlongation(AliTRDtrack& t, AliTRDtrackingSector *sec,
- Int_t s, Int_t rf)
+//_____________________________________________________________________________
+Int_t AliTRDtracker::LocalToGlobalID(Int_t lid)
{
- // Starting from current position on track=t this function tries
- // to extrapolate the track up to timeBin=rf and to confirm prolongation
- // if a close cluster is found. *sec is a pointer to allocated
- // array of sectors, in which the initial sector has index=s.
-
- const Int_t TIME_BINS_TO_SKIP=Int_t(fSkipDepth*sec->GetNtimeBins());
- Int_t try_again=TIME_BINS_TO_SKIP;
-
- Double_t alpha=AliTRDgeometry::GetAlpha();
-
- Int_t ns=Int_t(2*TMath::Pi()/alpha+0.5);
-
- for (Int_t nr=sec->GetTimeBinNumber(t.GetX())-1; nr>=rf; nr--) {
- Double_t x=sec->GetX(nr), ymax=sec->GetMaxY(nr);
- if (!t.PropagateTo(x)) {
- cerr<<"Can't propagate to x = "<<x<<endl;
- return 0;
- }
-
- AliTRDcluster *cl=0;
- UInt_t index=0;
-
- Double_t max_chi2=fMaxChi2;
-
- AliTRDtimeBin& time_bin=sec[s][nr];
- Double_t sy2=ExpectedSigmaY2(t.GetX(),t.GetTgl(),t.GetPt());
- Double_t sz2=ExpectedSigmaZ2(t.GetX(),t.GetTgl());
- Double_t road=5.*sqrt(t.GetSigmaY2() + sy2), y=t.GetY(), z=t.GetZ();
-
- if (road>fWideRoad) {
- if (t.GetNclusters() > 4) {
- cerr<<t.GetNclusters()<<" FindProlongation: Road is too wide !\n";
- }
- return 0;
- }
-
- if (time_bin) {
- for (Int_t i=time_bin.Find(y-road); i<time_bin; i++) {
- AliTRDcluster* c=(AliTRDcluster*)(time_bin[i]);
- if (c->GetY() > y+road) break;
- if (c->IsUsed() > 0) continue;
+ //
+ // Transform internal TRD ID to global detector ID
+ //
- if((c->GetZ()-z)*(c->GetZ()-z) > 25. + sz2) continue;
+ Int_t isector = fGeom->GetSector(lid);
+ Int_t ichamber = fGeom->GetChamber(lid);
+ Int_t iplan = fGeom->GetPlane(lid);
+
+ AliAlignObj::ELayerID iLayer = AliAlignObj::kTRD1;
+ switch (iplan) {
+ case 0:
+ iLayer = AliAlignObj::kTRD1;
+ break;
+ case 1:
+ iLayer = AliAlignObj::kTRD2;
+ break;
+ case 2:
+ iLayer = AliAlignObj::kTRD3;
+ break;
+ case 3:
+ iLayer = AliAlignObj::kTRD4;
+ break;
+ case 4:
+ iLayer = AliAlignObj::kTRD5;
+ break;
+ case 5:
+ iLayer = AliAlignObj::kTRD6;
+ break;
+ };
+
+ Int_t modId = isector * fGeom->Ncham() + ichamber;
+ UShort_t volid = AliAlignObj::LayerToVolUID(iLayer,modId);
+
+ return volid;
- Double_t chi2=t.GetPredictedChi2(c);
+}
- if (chi2 > max_chi2) continue;
- max_chi2=chi2;
- cl=c;
- index=time_bin.GetIndex(i);
- }
- }
- if (cl) {
+//_____________________________________________________________________________
+Int_t AliTRDtracker::GlobalToLocalID(Int_t gid)
+{
+ //
+ // Transform global detector ID to local detector ID
+ //
+
+ Int_t modId = 0;
+ AliAlignObj::ELayerID layerId = AliAlignObj::VolUIDToLayer(gid,modId);
+
+ Int_t isector = modId / fGeom->Ncham();
+ Int_t ichamber = modId % fGeom->Ncham();
+ Int_t iLayer = -1;
+
+ switch (layerId) {
+ case AliAlignObj::kTRD1:
+ iLayer = 0;
+ break;
+ case AliAlignObj::kTRD2:
+ iLayer = 1;
+ break;
+ case AliAlignObj::kTRD3:
+ iLayer = 2;
+ break;
+ case AliAlignObj::kTRD4:
+ iLayer = 3;
+ break;
+ case AliAlignObj::kTRD5:
+ iLayer = 4;
+ break;
+ case AliAlignObj::kTRD6:
+ iLayer = 5;
+ break;
+ default:
+ iLayer =-1;
+ }
- // Float_t l=sec->GetPitch();
- // t.SetSampledEdx(cl->fQ/l,Int_t(t));
-
- t.Update(cl,max_chi2,index);
-
- try_again=TIME_BINS_TO_SKIP;
- } else {
- if (try_again==0) break;
- if (y > ymax) {
- cerr<<"y > ymax: "<<y<<" > "<<ymax<<endl;
- s = (s+1) % ns;
- if (!t.Rotate(alpha)) {
- cerr<<"Failed to rotate, alpha = "<<alpha<<endl;
- return 0;
- }
- } else if (y <-ymax) {
- cerr<<"y < -ymax: "<<y<<" < "<<-ymax<<endl;
- s = (s-1+ns) % ns;
- if (!t.Rotate(-alpha)) {
- cerr<<"Failed to rotate, alpha = "<<alpha<<endl;
- return 0;
- }
- }
- try_again--;
- }
+ if (iLayer < 0) {
+ return -1;
}
- return 1;
-}
+ Int_t lid = fGeom->GetDetector(iLayer,ichamber,isector);
+ return lid;
+}
//_____________________________________________________________________________
-void AliTRDtracker::GetEvent(const Char_t *hitfile, const Char_t *clusterfile)
+Bool_t AliTRDtracker::Transform(AliTRDcluster *cluster)
{
- // Opens a ROOT-file with TRD-clusters and reads in the cluster-tree
+ //
+ // Transform something ... whatever ...
+ //
- ReadClusters(fClusters, clusterfile);
+ // Magic constants for geo manager transformation
+ const Double_t kX0shift = 2.52;
+ const Double_t kX0shift5 = 3.05;
+
+ //
+ // Apply alignment and calibration to transform cluster
+ //
+ Int_t detector = cluster->GetDetector();
+ Int_t plane = fGeom->GetPlane(cluster->GetDetector());
+ Int_t chamber = fGeom->GetChamber(cluster->GetDetector());
+ Int_t sector = fGeom->GetSector(cluster->GetDetector());
- // get geometry from the file with hits
+ Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region
+ Double_t driftX = TMath::Max(cluster->GetX()-dxAmp*0.5,0.0); // Drift distance
- TFile *fInputFile = (TFile*) gROOT->GetListOfFiles()->FindObject(hitfile);
- if (!fInputFile) {
- printf("AliTRDtracker::Open -- ");
- printf("Open the ALIROOT-file %s.\n",hitfile);
- fInputFile = new TFile(hitfile);
+ //
+ // ExB correction
+ //
+ Double_t vdrift = AliTRDcalibDB::Instance()->GetVdrift(cluster->GetDetector(),0,0);
+ Double_t exB = AliTRDcalibDB::Instance()->GetOmegaTau(vdrift,-AliTracker::GetBz()*0.1);
+
+ AliTRDCommonParam *commonParam = AliTRDCommonParam::Instance();
+ AliTRDpadPlane *padPlane = commonParam->GetPadPlane(plane,chamber);
+ Double_t zshiftIdeal = 0.5*(padPlane->GetRow0()+padPlane->GetRowEnd());
+ Double_t localPos[3];
+ Double_t localPosTracker[3];
+ localPos[0] = -cluster->GetX();
+ localPos[1] = cluster->GetY() - driftX * exB;
+ localPos[2] = cluster->GetZ() - zshiftIdeal;
+
+ cluster->SetY(cluster->GetY() - driftX*exB);
+ Double_t xplane = (Double_t) AliTRDgeometry::GetTime0(plane);
+ cluster->SetX(xplane- cluster->GetX());
+
+ TGeoHMatrix *matrix = fGeom->GetCorrectionMatrix(cluster->GetDetector());
+ if (!matrix) {
+ // No matrix found - if somebody used geometry with holes
+ AliError("Invalid Geometry - Default Geometry used\n");
+ return kTRUE;
}
- else {
- printf("AliTRDtracker::Open -- ");
- printf("%s is already open.\n",hitfile);
+ matrix->LocalToMaster(localPos,localPosTracker);
+
+ if (AliTRDReconstructor::StreamLevel() > 1) {
+ (* fDebugStreamer) << "Transform"
+ << "Cl.=" << cluster
+ << "matrix.=" << matrix
+ << "Detector=" << detector
+ << "Sector=" << sector
+ << "Plane=" << plane
+ << "Chamber=" << chamber
+ << "lx0=" << localPosTracker[0]
+ << "ly0=" << localPosTracker[1]
+ << "lz0=" << localPosTracker[2]
+ << "\n";
}
- // Get AliRun object from file or create it if not on file
-
- gAlice = (AliRun*) fInputFile->Get("gAlice");
- if (gAlice) {
- printf("AliTRDtracker::GetEvent -- ");
- printf("AliRun object found on file.\n");
+ if (plane == 5) {
+ cluster->SetX(localPosTracker[0]+kX0shift5);
}
else {
- printf("AliTRDtracker::GetEvent -- ");
- printf("Could not find AliRun object.\n");
- }
-
- // Import the Trees for the event nEvent in the file
- Int_t nparticles = gAlice->GetEvent(fEvent);
- cerr<<"nparticles = "<<nparticles<<endl;
+ cluster->SetX(localPosTracker[0]+kX0shift);
+ }
- if (nparticles <= 0) {
- printf("AliTRDtracker::GetEvent -- ");
- printf("No entries in the trees for event %d.\n",fEvent);
- }
+ cluster->SetY(localPosTracker[1]);
+ cluster->SetZ(localPosTracker[2]);
- AliTRD *TRD = (AliTRD*) gAlice->GetDetector("TRD");
- fGeom = TRD->GetGeometry();
+ return kTRUE;
-}
+}
+//_____________________________________________________________________________
+// Bool_t AliTRDtracker::Transform(AliTRDcluster *cluster)
+//{
+// //
+// // Is this still needed ????
+// //
+// const Double_t kDriftCorrection = 1.01; // drift coeficient correction
+// const Double_t kTime0Cor = 0.32; // time0 correction
+// //
+// const Double_t kX0shift = 2.52;
+// const Double_t kX0shift5 = 3.05;
+
+// //
+// // apply alignment and calibration to transform cluster
+// //
+// //
+// Int_t detector = cluster->GetDetector();
+// Int_t plane = fGeom->GetPlane(cluster->GetDetector());
+// Int_t chamber = fGeom->GetChamber(cluster->GetDetector());
+// Int_t sector = fGeom->GetSector(cluster->GetDetector());
+
+// Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region
+// Double_t driftX = TMath::Max(cluster->GetX()-dxAmp*0.5,0.); // drift distance
+// //
+// // ExB correction
+// //
+// Double_t vdrift = AliTRDcalibDB::Instance()->GetVdrift(cluster->GetDetector(),0,0);
+// Double_t exB = AliTRDcalibDB::Instance()->GetOmegaTau(vdrift,-AliTracker::GetBz()*0.1);
+// //
+
+// AliTRDCommonParam* commonParam = AliTRDCommonParam::Instance();
+// AliTRDpadPlane * padPlane = commonParam->GetPadPlane(plane,chamber);
+// Double_t zshiftIdeal = 0.5*(padPlane->GetRow0()+padPlane->GetRowEnd());
+// Double_t localPos[3], globalPos[3], localPosTracker[3], localPosTracker2[3];
+// localPos[2] = -cluster->GetX();
+// localPos[0] = cluster->GetY() - driftX*exB;
+// localPos[1] = cluster->GetZ() -zshiftIdeal;
+// TGeoHMatrix * matrix = fGeom->GetGeoMatrix(cluster->GetDetector());
+// matrix->LocalToMaster(localPos, globalPos);
+
+// Double_t sectorAngle = 20.*(sector%18)+10;
+// TGeoHMatrix rotSector;
+// rotSector.RotateZ(sectorAngle);
+// rotSector.LocalToMaster(globalPos, localPosTracker);
+// //
+// //
+// TGeoHMatrix matrix2(*matrix);
+// matrix2.MultiplyLeft(&rotSector);
+// matrix2.LocalToMaster(localPos,localPosTracker2);
+// //
+// //
+// //
+// cluster->SetY(cluster->GetY() - driftX*exB);
+// Double_t xplane = (Double_t) AliTRDgeometry::GetTime0(plane);
+// cluster->SetX(xplane- kDriftCorrection*(cluster->GetX()-kTime0Cor));
+// (*fDebugStreamer)<<"Transform"<<
+// "Cl.="<<cluster<<
+// "matrix.="<<matrix<<
+// "matrix2.="<<&matrix2<<
+// "Detector="<<detector<<
+// "Sector="<<sector<<
+// "Plane="<<plane<<
+// "Chamber="<<chamber<<
+// "lx0="<<localPosTracker[0]<<
+// "ly0="<<localPosTracker[1]<<
+// "lz0="<<localPosTracker[2]<<
+// "lx2="<<localPosTracker2[0]<<
+// "ly2="<<localPosTracker2[1]<<
+// "lz2="<<localPosTracker2[2]<<
+// "\n";
+// //
+// if (plane==5)
+// cluster->SetX(localPosTracker[0]+kX0shift5);
+// else
+// cluster->SetX(localPosTracker[0]+kX0shift);
+
+// cluster->SetY(localPosTracker[1]);
+// cluster->SetZ(localPosTracker[2]);
+// return kTRUE;
+// }
//_____________________________________________________________________________
-void AliTRDtracker::SetUpSectors(AliTRDtrackingSector *sec)
+Bool_t AliTRDtracker::AdjustSector(AliTRDtrack *track)
{
- // Fills clusters into TRD tracking_sectors
- // Note that the numbering scheme for the TRD tracking_sectors
- // differs from that of TRD sectors
+ //
+ // Rotates the track when necessary
+ //
- for (Int_t i=0; i<AliTRDgeometry::Nsect(); i++) sec[i].SetUp();
+ Double_t alpha = AliTRDgeometry::GetAlpha();
+ Double_t y = track->GetY();
+ Double_t ymax = track->GetX()*TMath::Tan(0.5*alpha);
- // Sort clusters into AliTRDtimeBin's within AliTRDtrackSector's
+ // Is this still needed ????
+ //Int_t ns = AliTRDgeometry::kNsect;
+ //Int_t s=Int_t(track->GetAlpha()/alpha)%ns;
- cerr<<"MakeSeeds: sorting clusters"<<endl;
-
- Int_t ncl=fClusters->GetEntriesFast();
- UInt_t index;
- while (ncl--) {
- printf("\r %d left",ncl);
- AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(ncl);
- Int_t detector=c->GetDetector(), local_time_bin=c->GetLocalTimeBin();
- Int_t sector=fGeom->GetSector(detector);
+ 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;
+ }
+ }
- Int_t tracking_sector=sector;
- if(sector > 0) tracking_sector = AliTRDgeometry::kNsect - sector;
+ return kTRUE;
- Int_t tb=sec[sector].GetTimeBin(detector,local_time_bin);
- index=ncl;
- sec[tracking_sector][tb].InsertCluster(c,index);
- }
- printf("\r\n");
}
-
//_____________________________________________________________________________
-void AliTRDtracker::MakeSeeds(Int_t inner, Int_t outer)
+AliTRDcluster *AliTRDtracker::GetCluster(AliTRDtrack *track, Int_t plane
+ , Int_t timebin, UInt_t &index)
{
- // Creates track seeds using clusters in timeBins=i1,i2
-
- Int_t i2 = inner, i1 = outer;
+ //
+ // Try to find cluster in the backup list
+ //
- if (!fClusters) return;
+ AliTRDcluster *cl =0;
+ Int_t *indexes = track->GetBackupIndexes();
- AliTRDtrackingSector fTrSec[AliTRDgeometry::kNsect];
- SetUpSectors(fTrSec);
+ for (UInt_t i = 0; i < kMaxTimeBinIndex; i++) {
+ if (indexes[i] == 0) {
+ break;
+ }
+ AliTRDcluster *cli = (AliTRDcluster *) fClusters->UncheckedAt(indexes[i]);
+ if (!cli) {
+ break;
+ }
+ if (cli->GetLocalTimeBin() != timebin) {
+ continue;
+ }
+ Int_t iplane = fGeom->GetPlane(cli->GetDetector());
+ if (iplane == plane) {
+ cl = cli;
+ index = indexes[i];
+ break;
+ }
+ }
- // find seeds
+ return cl;
- Double_t x[5], c[15];
- Int_t max_sec=AliTRDgeometry::kNsect;
+}
- Double_t alpha=AliTRDgeometry::GetAlpha();
- Double_t shift=AliTRDgeometry::GetAlpha()/2.;
- Double_t cs=cos(alpha), sn=sin(alpha);
+//_____________________________________________________________________________
+Int_t AliTRDtracker::GetLastPlane(AliTRDtrack *track)
+{
+ //
+ // Return last updated plane
+ //
- Double_t x1 =fTrSec[0].GetX(i1);
- Double_t xx2=fTrSec[0].GetX(i2);
+ Int_t lastplane = 0;
+ Int_t *indexes = track->GetBackupIndexes();
- for (Int_t ns=0; ns<max_sec; ns++) {
+ 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 nl=fTrSec[(ns-1+max_sec)%max_sec][i2];
- Int_t nm=fTrSec[ns][i2];
- Int_t nu=fTrSec[(ns+1)%max_sec][i2];
+ return lastplane;
- AliTRDtimeBin& r1=fTrSec[ns][i1];
+}
- for (Int_t is=0; is < r1; is++) {
- Double_t y1=r1[is]->GetY(), z1=r1[is]->GetZ();
+//_____________________________________________________________________________
+Int_t AliTRDtracker::Clusters2Tracks(AliESD *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.
+ // The tracks are propagated to the innermost time bin
+ // of the TRD and the ESD event is updated
+ //
- for (Int_t js=0; js < nl+nm+nu; js++) {
- const AliTRDcluster *cl;
- Double_t x2, y2, z2;
- Double_t x3=0.,y3=0.;
+ 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();
- if (js<nl) {
- AliTRDtimeBin& r2=fTrSec[(ns-1+max_sec)%max_sec][i2];
- cl=r2[js];
- y2=cl->GetY(); z2=cl->GetZ();
+ Int_t n = event->GetNumberOfTracks();
+ for (Int_t i = 0; i < n; i++) {
- x2= xx2*cs+y2*sn;
- y2=-xx2*sn+y2*cs;
+ 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);
+ if (t.GetNumberOfClusters() >= foundMin) {
+ UseClusters(&t);
+ CookLabel(pt,1 - fgkLabelFraction);
+ //t.CookdEdx();
+ }
+ found++;
- } else
- if (js<nl+nm) {
- AliTRDtimeBin& r2=fTrSec[ns][i2];
- cl=r2[js-nl];
- x2=xx2; y2=cl->GetY(); z2=cl->GetZ();
- } else {
- AliTRDtimeBin& r2=fTrSec[(ns+1)%max_sec][i2];
- cl=r2[js-nl-nm];
- y2=cl->GetY(); z2=cl->GetZ();
+ Double_t xTPC = 250.0;
+ if (PropagateToX(t,xTPC,fgkMaxStep)) {
+ seed->UpdateTrackParams(pt, AliESDtrack::kTRDin);
+ }
+ delete seed2;
+ delete pt;
- x2=xx2*cs-y2*sn;
- y2=xx2*sn+y2*cs;
+ }
- }
+ AliInfo(Form("Number of loaded seeds: %d",nseed));
+ AliInfo(Form("Number of found tracks from loaded seeds: %d",found));
+ AliInfo(Form("Total number of found tracks: %d",found));
+
+ return 0;
- Double_t zz=z1 - z1/x1*(x1-x2);
-
- if (TMath::Abs(zz-z2)>fMaxSeedDeltaZ) continue;
+}
+
+//_____________________________________________________________________________
+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; // number of tracks found
+ Float_t foundMin = 20.0;
+ Int_t n = event->GetNumberOfTracks();
+
+ // Sort tracks
+ Float_t *quality = new Float_t[n];
+ Int_t *index = new Int_t[n];
+ for (Int_t i = 0; i < n; i++) {
+ AliESDtrack *seed = event->GetTrack(i);
+ Double_t covariance[15];
+ seed->GetExternalCovariance(covariance);
+ quality[i] = covariance[0]+covariance[2];
+ //quality[i] = covariance[0];
+ }
+ TMath::Sort(n,quality,index,kFALSE);
- Double_t d=(x2-x1)*(0.-y2)-(0.-x2)*(y2-y1);
- if (d==0.) {cerr<<"TRD MakeSeeds: Straight seed !\n"; continue;}
+ for (Int_t i = 0; i < n; i++) {
- x[0]=y1;
- x[1]=z1;
- x[2]=f1trd(x1,y1,x2,y2,x3,y3);
+ //AliESDtrack *seed = event->GetTrack(i);
+ AliESDtrack *seed = event->GetTrack(index[i]);
+ fHBackfit->Fill(0);
- if (TMath::Abs(x[2]) >= fMaxSeedC) continue;
+ ULong_t status = seed->GetStatus();
+ if ((status & AliESDtrack::kTPCout) == 0) {
+ fHBackfit->Fill(1);
+ continue;
+ }
- x[3]=f2trd(x1,y1,x2,y2,x3,y3);
+ if ((status & AliESDtrack::kTRDout) != 0) {
+ fHBackfit->Fill(2);
+ continue;
+ }
- if (TMath::Abs(x[2]*x1-x[3]) >= 0.99999) continue;
+ Int_t lbl = seed->GetLabel();
+ AliTRDtrack *track = new AliTRDtrack(*seed);
+ track->SetSeedLabel(lbl);
+ seed->UpdateTrackParams(track,AliESDtrack::kTRDbackup); // Make backup
+ fNseeds++;
+ Float_t p4 = track->GetC();
+ Int_t expectedClr = FollowBackProlongation(*track);
+
+ fHBackfit->Fill(3);
+ fHX->Fill(track->GetX());
+
+
+ // store the last measurement
+ /*
+ fHNClTrack->Fill(track->GetNumberOfClusters());
+ if (track->GetNumberOfClusters() >= foundMin) {
+
+ fHBackfit->Fill(4);
+ track->CookdEdx();
+ CookdEdxTimBin(*track);
+ CookLabel(track,1 - fgkLabelFraction);
+ if (track->GetBackupTrack()) {
+ //fHBackfit->Fill(5);
+ UseClusters(track->GetBackupTrack());
+ seed->UpdateTrackParams(track->GetBackupTrack(),AliESDtrack::kTRDbackup);
+ }
+ }
+ */
+
+ /**/
+ // inter-tracks competition ???
+ if ((TMath::Abs(track->GetC() - p4) / TMath::Abs(p4) < 0.2) ||
+ (TMath::Abs(track->GetPt()) > 0.8)) {
+
+ fHBackfit->Fill(4);
+
+ //
+ // Make backup for back propagation
+ //
+
+ Int_t foundClr = track->GetNumberOfClusters();
+ if (foundClr >= foundMin) {
+ track->CookdEdx();
+ CookdEdxTimBin(*track);
+ CookLabel(track,1 - fgkLabelFraction);
+ if (track->GetBackupTrack()) {
+ UseClusters(track->GetBackupTrack());
+ }
- x[4]=f3trd(x1,y1,x2,y2,z1,z2);
+ // Sign only gold tracks
+ if (track->GetChi2() / track->GetNumberOfClusters() < 4) {
+ if ((seed->GetKinkIndex(0) == 0) &&
+ (TMath::Abs(track->GetPt()) < 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()
+ }
- if (TMath::Abs(x[4]) > fMaxSeedTan) continue;
+ // 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;
+ }
- Double_t a=asin(x[3]);
- Double_t zv=z1 - x[4]/x[2]*(a+asin(x[2]*x1-x[3]));
- if (TMath::Abs(zv)>fMaxSeedVertexZ) continue;
+ 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;
+ }
+ }
- Double_t sy1=r1[is]->GetSigmaY2(), sz1=r1[is]->GetSigmaZ2();
- Double_t sy2=cl->GetSigmaY2(), sz2=cl->GetSigmaZ2();
- Double_t sy3=fSeedErrorSY3, sy=fSeedErrorSY, sz=fSeedErrorSZ;
+ if ((track->StatusForTOF() > 0) &&
+ (track->GetNCross() == 0) &&
+ (Float_t(track->GetNumberOfClusters()) / Float_t(track->GetNExpected()) > 0.4)) {
+ //seed->UpdateTrackParams(track->GetBackupTrack(), AliESDtrack::kTRDbackup);
+ }
- Double_t f20=(f1trd(x1,y1+sy,x2,y2,x3,y3)-x[2])/sy;
- Double_t f22=(f1trd(x1,y1,x2,y2+sy,x3,y3)-x[2])/sy;
- Double_t f24=(f1trd(x1,y1,x2,y2,x3,y3+sy)-x[2])/sy;
- Double_t f30=(f2trd(x1,y1+sy,x2,y2,x3,y3)-x[3])/sy;
- Double_t f32=(f2trd(x1,y1,x2,y2+sy,x3,y3)-x[3])/sy;
- Double_t f34=(f2trd(x1,y1,x2,y2,x3,y3+sy)-x[3])/sy;
- Double_t f40=(f3trd(x1,y1+sy,x2,y2,z1,z2)-x[4])/sy;
- Double_t f41=(f3trd(x1,y1,x2,y2,z1+sz,z2)-x[4])/sz;
- Double_t f42=(f3trd(x1,y1,x2,y2+sy,z1,z2)-x[4])/sy;
- Double_t f43=(f3trd(x1,y1,x2,y2,z1,z2+sz)-x[4])/sz;
+ }
+ }
+ /**/
+
+ /**/
+ // Debug part of tracking
+ TTreeSRedirector &cstream = *fDebugStreamer;
+ Int_t eventNr = event->GetEventNumber();
+ if (AliTRDReconstructor::StreamLevel() > 0) {
+ if (track->GetBackupTrack()) {
+ cstream << "Tracks"
+ << "EventNr=" << eventNr
+ << "ESD.=" << seed
+ << "trd.=" << track
+ << "trdback.=" << track->GetBackupTrack()
+ << "\n";
+ }
+ else {
+ cstream << "Tracks"
+ << "EventNr=" << eventNr
+ << "ESD.=" << seed
+ << "trd.=" << track
+ << "trdback.=" << track
+ << "\n";
+ }
+ }
+ /**/
- c[0]=sy1;
- c[1]=0.; c[2]=sz1;
- c[3]=f20*sy1; c[4]=0.; c[5]=f20*sy1*f20+f22*sy2*f22+f24*sy3*f24;
- c[6]=f30*sy1; c[7]=0.; c[8]=f30*sy1*f20+f32*sy2*f22+f34*sy3*f24;
- c[9]=f30*sy1*f30+f32*sy2*f32+f34*sy3*f34;
- c[10]=f40*sy1; c[11]=f41*sz1; c[12]=f40*sy1*f20+f42*sy2*f22;
- c[13]=f40*sy1*f30+f42*sy2*f32;
- c[14]=f40*sy1*f40+f41*sz1*f41+f42*sy2*f42+f43*sz2*f43;
+ // Propagation to the TOF (I.Belikov)
+ if (track->GetStop() == kFALSE) {
+ fHBackfit->Fill(5);
- UInt_t index=r1.GetIndex(is);
- AliTRDtrack *track=new AliTRDtrack(index, x, c, x1, ns*alpha+shift);
+ 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);
- Int_t rc=FindProlongation(*track,fTrSec,ns,i2);
-
- if ((rc < 0) ||
- (track->GetNclusters() < (i1-i2)*fMinClustersInSeed)) delete track;
- else {
- fSeeds->AddLast(track); fNseeds++;
- cerr<<"found seed "<<fNseeds<<endl;
+ // 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);
+
+ for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
+ for (Int_t j = 0; j < AliESDtrack::kNSlice; j++) {
+ seed->SetTRDsignals(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);
+ for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
+ for (Int_t j = 0; j <AliESDtrack::kNSlice; j++) {
+ seed->SetTRDsignals(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));
+
+ // New seeding
+ if (AliTRDReconstructor::SeedingOn()) {
+ MakeSeedsMI(3,5,event);
}
- fSeeds->Sort();
-}
+ fSeeds->Clear();
+ fNseeds = 0;
-//___________________________________________________________________
-void AliTRDtracker::FindTracks()
+ delete [] index;
+ delete [] quality;
+
+ SaveLogHists();
+
+ return 0;
+}
+
+//_____________________________________________________________________________
+Int_t AliTRDtracker::RefitInward(AliESD *event)
{
- if (!fClusters) return;
+ //
+ // 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)
+ //
- AliTRDtrackingSector fTrSec[AliTRDgeometry::kNsect];
- SetUpSectors(fTrSec);
+ 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();
+ AliTRDtrack seed2;
+
+ Int_t n = event->GetNumberOfTracks();
+ for (Int_t i = 0; i < n; i++) {
- // find tracks
+ AliESDtrack *seed = event->GetTrack(i);
+ new (&seed2) AliTRDtrack(*seed);
+ fHRefit->Fill(0);
- Int_t num_of_time_bins = fTrSec[0].GetNtimeBins();
- Int_t nseed=fSeeds->GetEntriesFast();
+ if (seed2.GetX() < 270.0) {
+ seed->UpdateTrackParams(&seed2,AliESDtrack::kTRDbackup); // Backup TPC track - only update
+ fHRefit->Fill(1);
+ continue;
+ }
- Int_t nSeedClusters;
- for (Int_t i=0; i<nseed; i++) {
- cerr<<"FindTracks: seed "<<i+1<<" out of "<<nseed<<endl;
+ 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);
- AliTRDtrack& t=*((AliTRDtrack*)fSeeds->UncheckedAt(i));
+ seed2.ResetCovariance(50.0);
- nSeedClusters = t.GetNclusters();
- Double_t alpha=t.GetAlpha();
+ AliTRDtrack *pt = new AliTRDtrack(seed2,seed2.GetAlpha());
+ Int_t *indexes2 = seed2.GetIndexes();
+ for (Int_t i = 0; i < AliESDtrack::kNPlane;i++) {
+ for (Int_t j = 0; j < AliESDtrack::kNSlice;j++) {
+ pt->SetPIDsignals(seed2.GetPIDsignals(i,j),i,j);
+ }
+ pt->SetPIDTimBin(seed2.GetPIDTimBin(i),i);
+ }
- if (alpha > 2.*TMath::Pi()) alpha -= 2.*TMath::Pi();
- if (alpha < 0. ) alpha += 2.*TMath::Pi();
- Int_t ns=Int_t(alpha/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect;
+ Int_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);
+ if (t.GetNumberOfClusters() >= foundMin) {
+ //UseClusters(&t);
+ //CookLabel(pt, 1-fgkLabelFraction);
+ t.CookdEdx();
+ CookdEdxTimBin(t);
+ }
+ found++;
- if (FindProlongation(t,fTrSec,ns)) {
- cerr<<"No of clusters in the track = "<<t.GetNclusters()<<endl;
- if (t.GetNclusters() >= Int_t(fMinClustersInTrack*num_of_time_bins)) {
- Int_t label = GetTrackLabel(t);
- t.SetLabel(label);
- UseClusters(t);
+ Double_t xTPC = 250.0;
+ if (PropagateToX(t,xTPC,fgkMaxStep)) {
- AliTRDtrack *pt = new AliTRDtrack(t);
- fTracks->AddLast(pt); fNtracks++;
+ seed->UpdateTrackParams(pt,AliESDtrack::kTRDrefit);
+ fHRefit->Fill(5);
- cerr<<"found track "<<fNtracks<<endl;
- }
- }
- delete fSeeds->RemoveAt(i);
- }
-}
+ for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
+ for (Int_t j = 0; j < AliESDtrack::kNSlice; j++) {
+ seed->SetTRDsignals(pt->GetPIDsignals(i,j),i,j);
+ }
+ seed->SetTRDTimBin(pt->GetPIDTimBin(i),i);
+ }
+ }
+ else {
+ // If not prolongation to TPC - propagate without update
+ fHRefit->Fill(5);
+ AliTRDtrack *seed2 = new AliTRDtrack(*seed);
+ seed2->ResetCovariance(5.0);
+ AliTRDtrack *pt2 = new AliTRDtrack(*seed2,seed2->GetAlpha());
+ delete seed2;
+ if (PropagateToX(*pt2,xTPC,fgkMaxStep)) {
+ pt2->CookdEdx( );
+ CookdEdxTimBin(*pt2);
+ seed->UpdateTrackParams(pt2,AliESDtrack::kTRDrefit);
+ fHRefit->Fill(6);
+
+ for (Int_t i = 0; i < AliESDtrack::kNPlane; i++) {
+ for (Int_t j = 0; j < AliESDtrack::kNSlice; j++) {
+ seed->SetTRDsignals(pt2->GetPIDsignals(i,j),i,j);
+ }
+ seed->SetTRDTimBin(pt2->GetPIDTimBin(i),i);
+ }
+ }
+ delete pt2;
+ }
-//__________________________________________________________________
-void AliTRDtracker::UseClusters(AliTRDtrack t) {
- Int_t ncl=t.GetNclusters();
- for (Int_t i=0; i<ncl; i++) {
- Int_t index = t.GetClusterIndex(i);
- AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index);
- c->Use();
- }
-}
+ delete pt;
-//__________________________________________________________________
-Int_t AliTRDtracker::GetTrackLabel(AliTRDtrack t) {
+ }
- Int_t label=123456789, index, i, j;
- Int_t ncl=t.GetNclusters();
- const Int_t range = AliTRDgeometry::kNplan * fGeom->GetTimeMax();
- Bool_t label_added;
+ AliInfo(Form("Number of loaded seeds: %d",nseed));
+ AliInfo(Form("Number of found tracks from loaded seeds: %d",found));
- // Int_t s[range][2];
- Int_t **s = new Int_t* [range];
- for (i=0; i<range; i++) {
- s[i] = new Int_t[2];
- }
- for (i=0; i<range; i++) {
- s[i][0]=-1;
- s[i][1]=0;
- }
+ SaveLogHists();
+ return 0;
+}
- Int_t t0,t1,t2;
- for (i=0; i<ncl; i++) {
- index=t.GetClusterIndex(i);
- AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index);
- t0=c->GetTrackIndex(0);
- t1=c->GetTrackIndex(1);
- t2=c->GetTrackIndex(2);
- }
+//_____________________________________________________________________________
+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
+ //
- for (i=0; i<ncl; i++) {
- index=t.GetClusterIndex(i);
- AliTRDcluster *c=(AliTRDcluster*)fClusters->UncheckedAt(index);
- for (Int_t k=0; k<3; k++) {
- label=c->GetTrackIndex(k);
- label_added=kFALSE; j=0;
- if (label >= 0) {
- while ( (!label_added) && ( j < range ) ) {
- if (s[j][0]==label || s[j][1]==0) {
- s[j][0]=label;
- s[j][1]=s[j][1]+1;
- label_added=kTRUE;
- }
- j++;
- }
+ Int_t sector;
+ Int_t lastplane = GetLastPlane(&t);
+ Double_t radLength = 0.0;
+ Double_t rho = 0.0;
+ Int_t expectedNumberOfClusters = 0;
+
+ for (Int_t iplane = lastplane; iplane >= 0; iplane--) {
+
+ Int_t row0 = GetGlobalTimeBin(0,iplane,GetTimeBinsPerPlane()-1);
+ Int_t rowlast = GetGlobalTimeBin(0,iplane,0);
+
+ //
+ // Propagate track close to the plane if neccessary
+ //
+ Double_t currentx = fTrSec[0]->GetLayer(rowlast)->GetX();
+ if (currentx < (-fgkMaxStep + t.GetX())) {
+ // Propagate closer to chamber - safety space fgkMaxStep
+ if (!PropagateToX(t,currentx+fgkMaxStep,fgkMaxStep)) {
+ break;
}
}
- }
- Int_t max=0;
- label = -123456789;
+ if (!AdjustSector(&t)) {
+ break;
+ }
- for (i=0; i<range; i++) {
- if (s[i][1]>max) {
- max=s[i][1]; label=s[i][0];
+ //
+ // 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;
}
- }
- delete []s;
- if(max > ncl*fLabelFraction) return label;
- else return -1;
-}
+ 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;
+ AliKalmanTrack::MeanMaterialBudget(xyz0,xyz1,param);
+ rho = param[0];
+ radLength = param[1]; // Get mean propagation parameters
+
+ //
+ // Propagate and update
+ //
+ sector = t.GetSector();
+ //for (Int_t itime=GetTimeBinsPerPlane()-1;itime>=0;itime--) {
+ for (Int_t itime = 0 ; itime < GetTimeBinsPerPlane(); itime++) {
+
+ Int_t ilayer = GetGlobalTimeBin(0,iplane,itime);
+ expectedNumberOfClusters++;
+ t.SetNExpected(t.GetNExpected() + 1);
+ if (t.GetX() > 345.0) {
+ t.SetNExpectedLast(t.GetNExpectedLast() + 1);
+ }
+ AliTRDpropagationLayer &timeBin = *(fTrSec[sector]->GetLayer(ilayer));
+ AliTRDcluster *cl = 0;
+ UInt_t index = 0;
+ Double_t maxChi2 = fgkMaxChi2;
+ x = timeBin.GetX();
+
+ if (timeBin) {
+
+ AliTRDcluster *cl0 = timeBin[0];
+ if (!cl0) {
+ // No clusters in given time bin
+ continue;
+ }
+
+ Int_t plane = fGeom->GetPlane(cl0->GetDetector());
+ if (plane > lastplane) {
+ continue;
+ }
-//___________________________________________________________________
+ Int_t timebin = cl0->GetLocalTimeBin();
+ AliTRDcluster *cl2 = GetCluster(&t,plane,timebin,index);
-Int_t AliTRDtracker::WriteTracks(const Char_t *filename) {
+ if (cl2) {
- TDirectory *savedir=gDirectory;
+ cl = cl2;
+ //Double_t h01 = GetTiltFactor(cl); //I.B's fix
+ //maxChi2=t.GetPredictedChi2(cl,h01);
- TFile *out=TFile::Open(filename,"RECREATE");
+ }
+ if (cl) {
- TTree tracktree("TreeT","Tree with TRD tracks");
+ //if (cl->GetNPads()<5)
+ Double_t dxsample = timeBin.GetdX();
+ t.SetSampledEdx(TMath::Abs(cl->GetQ()/dxsample));
+ Double_t h01 = GetTiltFactor(cl);
+ Int_t det = cl->GetDetector();
+ Int_t plane = fGeom->GetPlane(det);
+ if (t.GetX() > 345.0) {
+ t.SetNLast(t.GetNLast() + 1);
+ t.SetChi2Last(t.GetChi2Last() + maxChi2);
+ }
- AliTRDtrack *iotrack=0;
- tracktree.Branch("tracks","AliTRDtrack",&iotrack,32000,0);
+ Double_t xcluster = cl->GetX();
+ t.PropagateTo(xcluster,radLength,rho);
- Int_t ntracks=fTracks->GetEntriesFast();
+ if (!AdjustSector(&t)) {
+ break; //I.B's fix
+ }
+ maxChi2 = t.GetPredictedChi2(cl,h01);
+
+ if (maxChi2<1e+10)
+ if (!t.UpdateMI(cl,maxChi2,index,h01,plane)) {
+ // ????
+ }
- for (Int_t i=0; i<ntracks; i++) {
- AliTRDtrack *pt=(AliTRDtrack*)fTracks->UncheckedAt(i);
- iotrack=pt;
- tracktree.Fill();
- cerr<<"WriteTracks: put track "<<i<<" in the tree"<<endl;
- }
+ }
- tracktree.Write();
- out->Close();
+ }
- savedir->cd();
+ }
- cerr<<"WriteTracks: done"<<endl;
- return 0;
-}
+ }
+
+ return expectedNumberOfClusters;
+
+}
//_____________________________________________________________________________
-void AliTRDtracker::ReadClusters(TObjArray *array, const Char_t *filename,
-Int_t option)
+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
+ // layers confirms prolongation if a close cluster is found.
+ // Returns the number of clusters expected to be found in sensitive layers
+ // Use GEO manager for material Description
//
- // 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()
+ // return number of assigned clusters ?
//
- TDirectory *savedir=gDirectory;
- TFile *file = TFile::Open(filename);
- if (!file->IsOpen()) {printf("Can't open file %s !\n",filename); return;}
+ Int_t sector;
+ Int_t clusters[1000];
+ Double_t radLength = 0.0;
+ Double_t rho = 0.0;
+ Int_t expectedNumberOfClusters = 0;
+ Float_t ratio0 = 0.0;
+ AliTRDtracklet tracklet;
- TTree *tree = (TTree*)file->Get("ClusterTree");
- Int_t nentr = (Int_t) tree->GetEntries();
- printf("found %d entries in %s.\n",nentr,tree->GetName());
+ // Calibration fill 2D
+ AliTRDCalibra *calibra = AliTRDCalibra::Instance();
+ if (!calibra) {
+ AliInfo("Could not get Calibra instance\n");
+ }
+ if (calibra->GetMITracking()) {
+ calibra->ResetTrack();
+ }
- TBranch *branch;
- TObjArray *ioArray = new TObjArray(400);
+ for (Int_t i = 0; i < 1000; i++) {
+ clusters[i] = -1;
+ }
- if( option < 0 ) {
- branch = tree->GetBranch("RecPoints");
+ for (Int_t iplane = 0; iplane < AliESDtrack::kNPlane; iplane++) {
- for (Int_t i=0; i<nentr; i++) {
- branch->SetAddress(&ioArray);
- tree->GetEvent(i);
- Int_t npoints = ioArray->GetEntriesFast();
- printf("Read %d rec. points from entry %d \n", npoints, i);
+ int hb = iplane * 10;
+ fHClSearch->Fill(hb);
- for(Int_t j=0; j<npoints; j++) {
- AliTRDrecPoint *p=(AliTRDrecPoint*)ioArray->UncheckedAt(j);
- array->AddLast(p);
- ioArray->RemoveAt(j);
+ Int_t row0 = GetGlobalTimeBin(0,iplane,GetTimeBinsPerPlane()-1);
+ Int_t rowlast = GetGlobalTimeBin(0,iplane,0);
+ Double_t currentx = fTrSec[0]->GetLayer(row0)->GetX();
+ if (currentx < t.GetX()) {
+ fHClSearch->Fill(hb+1);
+ continue;
+ }
+
+ //
+ // Propagate closer to chamber if neccessary
+ //
+ if (currentx > (fgkMaxStep + t.GetX())) {
+ if (!PropagateToX(t,currentx-fgkMaxStep,fgkMaxStep)) {
+ fHClSearch->Fill(hb+2);
+ break;
+ }
+ }
+ if (!AdjustSector(&t)) {
+ fHClSearch->Fill(hb+3);
+ break;
+ }
+ if (TMath::Abs(t.GetSnp()) > fgkMaxSnp) {
+ fHClSearch->Fill(hb+4);
+ break;
+ }
+
+ //
+ // Get material budget inside of chamber
+ //
+ 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(rowlast)->GetX();
+ if (!t.GetProlongation(x,y,z)) {
+ fHClSearch->Fill(hb+5);
+ break;
+ }
+ xyz1[0] = x * TMath::Cos(t.GetAlpha()) - y * TMath::Sin(t.GetAlpha());
+ xyz1[1] = +x * TMath::Sin(t.GetAlpha()) + y * TMath::Cos(t.GetAlpha());
+ xyz1[2] = z;
+ AliKalmanTrack::MeanMaterialBudget(xyz0,xyz1,param);
+ rho = param[0];
+ radLength = param[1]; // Get mean propagation parameters
+
+ //
+ // Find clusters
+ //
+ sector = t.GetSector();
+ Float_t ncl = FindClusters(sector,row0,rowlast,&t,clusters,tracklet);
+ fHNCl->Fill(tracklet.GetN());
+
+ if (tracklet.GetN() < GetTimeBinsPerPlane()/3) {
+ fHClSearch->Fill(hb+6);
+ continue;
+ }
+
+ //
+ // Propagate and update track
+ //
+ for (Int_t itime = GetTimeBinsPerPlane()-1; itime >= 0; itime--) {
+
+ Int_t ilayer = GetGlobalTimeBin(0, iplane,itime);
+ expectedNumberOfClusters++;
+ t.SetNExpected(t.GetNExpected() + 1);
+ if (t.GetX() > 345.0) {
+ t.SetNExpectedLast(t.GetNExpectedLast() + 1);
+ }
+ AliTRDpropagationLayer &timeBin = *(fTrSec[sector]->GetLayer(ilayer));
+ AliTRDcluster *cl = 0;
+ UInt_t index = 0;
+ Double_t maxChi2 = fgkMaxChi2;
+ x = timeBin.GetX();
+
+ if (timeBin) {
+
+ if (clusters[ilayer] > 0) {
+ index = clusters[ilayer];
+ cl = (AliTRDcluster *)GetCluster(index);
+ //Double_t h01 = GetTiltFactor(cl); // I.B's fix
+ //maxChi2=t.GetPredictedChi2(cl,h01); //
+ }
+
+ if (cl) {
+
+ //if (cl->GetNPads() < 5)
+ Double_t dxsample = timeBin.GetdX();
+ t.SetSampledEdx(TMath::Abs(cl->GetQ()/dxsample));
+ Double_t h01 = GetTiltFactor(cl);
+ Int_t det = cl->GetDetector();
+ Int_t plane = fGeom->GetPlane(det);
+ if (t.GetX() > 345.0) {
+ t.SetNLast(t.GetNLast() + 1);
+ t.SetChi2Last(t.GetChi2Last() + maxChi2);
+ }
+ Double_t xcluster = cl->GetX();
+ t.PropagateTo(xcluster,radLength,rho);
+ maxChi2 = t.GetPredictedChi2(cl,h01);
+
+ if (maxChi2<1e+10)
+ if (!t.UpdateMI(cl,maxChi2,index,h01,plane)) {
+ if (!t.Update(cl,maxChi2,index,h01)) {
+ // ????
+ }
+ }
+
+ if (calibra->GetMITracking()) {
+ calibra->UpdateHistograms(cl,&t);
+ }
+
+ // Reset material budget if 2 consecutive gold
+ if (plane > 0) {
+ if ((t.GetTracklets(plane).GetN() + t.GetTracklets(plane-1).GetN()) > 20) {
+ t.SetBudget(2,0.0);
+ }
+ }
+
+ }
+
+ }
+
+ }
+
+ ratio0 = ncl / Float_t(fTimeBinsPerPlane);
+ Float_t ratio1 = Float_t(t.GetNumberOfClusters()+1) / Float_t(t.GetNExpected()+1);
+ if ((tracklet.GetChi2() < 18.0) &&
+ (ratio0 > 0.8) &&
+ (ratio1 > 0.6) &&
+ (ratio0+ratio1 > 1.5) &&
+ (t.GetNCross() == 0) &&
+ (TMath::Abs(t.GetSnp()) < 0.85) &&
+ (t.GetNumberOfClusters() > 20)){
+ //if (ratio0 > 0.8) {
+ t.MakeBackupTrack(); // Make backup of the track until is gold
+ }
+
+ }
+
+ return expectedNumberOfClusters;
+}
+
+//_____________________________________________________________________________
+Int_t AliTRDtracker::PropagateToX(AliTRDtrack &t, Double_t xToGo, Double_t maxStep)
+{
+ //
+ // Starting from current radial position of track <t> this function
+ // extrapolates the track up to radial position <xToGo>.
+ // Returns 1 if track reaches the plane, and 0 otherwise
+ //
+
+ const Double_t kEpsilon = 0.00001;
+ //Double_t tanmax = TMath::Tan(0.5*AliTRDgeometry::GetAlpha());
+ Double_t xpos = t.GetX();
+ Double_t dir = (xpos<xToGo) ? 1.0 : -1.0;
+
+ while (((xToGo-xpos)*dir) > kEpsilon) {
+
+ Double_t step = dir * TMath::Min(TMath::Abs(xToGo-xpos),maxStep);
+
+ 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);
+ x = xpos + step;
+
+ if (!t.GetProlongation(x,y,z)) {
+ return 0; // No prolongation
+ }
+
+ 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;
+
+ AliKalmanTrack::MeanMaterialBudget(xyz0,xyz1,param);
+ if (!t.PropagateTo(x,param[1],param[0])) {
+ return 0;
+ }
+ AdjustSector(&t);
+ xpos = t.GetX();
+
+ }
+
+ return 1;
+
+}
+
+//_____________________________________________________________________________
+Int_t AliTRDtracker::LoadClusters(TTree *cTree)
+{
+ //
+ // Fills clusters into TRD tracking_sectors
+ // Note that the numbering scheme for the TRD tracking_sectors
+ // differs from that of TRD sectors
+ //
+
+ if (ReadClusters(fClusters,cTree)) {
+ AliError("Problem with reading the clusters !");
+ return 1;
+ }
+ Int_t ncl = fClusters->GetEntriesFast();
+ fNclusters = ncl;
+ AliInfo(Form("Sorting %d clusters",ncl));
+
+ UInt_t index;
+ 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 plane = fGeom->GetPlane(detector);
+ Int_t trackingSector = CookSectorIndex(sector);
+
+ //if (c->GetLabel(0) > 0) {
+ if (c->GetQ() > 10) {
+ Int_t chamber = fGeom->GetChamber(detector);
+ fHoles[chamber][trackingSector] = kFALSE;
+ }
+
+ Int_t gtb = fTrSec[trackingSector]->CookTimeBinIndex(plane,localTimeBin);
+ if (gtb < 0) {
+ continue;
+ }
+ Int_t layer = fTrSec[trackingSector]->GetLayerNumber(gtb);
+
+ index = ncl;
+
+ // Apply pos correction
+ Transform(c);
+ fHXCl->Fill(c->GetX());
+
+ fTrSec[trackingSector]->GetLayer(layer)->SetX(c->GetX());
+ fTrSec[trackingSector]->GetLayer(layer)->InsertCluster(c,index);
+ }
+
+ return 0;
+
+}
+
+//_____________________________________________________________________________
+void AliTRDtracker::UnloadClusters()
+{
+ //
+ // Clears the arrays of clusters and tracks. Resets sectors and timebins
+ //
+
+ Int_t i;
+ Int_t nentr;
+
+ nentr = fClusters->GetEntriesFast();
+ for (i = 0; i < nentr; i++) {
+ delete fClusters->RemoveAt(i);
+ }
+ fNclusters = 0;
+
+ nentr = fSeeds->GetEntriesFast();
+ for (i = 0; i < nentr; i++) {
+ delete fSeeds->RemoveAt(i);
+ }
+
+ nentr = fTracks->GetEntriesFast();
+ for (i = 0; i < nentr; i++) {
+ delete fTracks->RemoveAt(i);
+ }
+
+ Int_t nsec = AliTRDgeometry::kNsect;
+ for (i = 0; i < nsec; i++) {
+ for(Int_t pl = 0; pl < fTrSec[i]->GetNumberOfLayers(); pl++) {
+ fTrSec[i]->GetLayer(pl)->Clear();
+ }
+ }
+
+}
+
+//_____________________________________________________________________________
+void AliTRDtracker::MakeSeedsMI(Int_t /*inner*/, Int_t /*outer*/, AliESD *esd)
+{
+ //
+ // Creates seeds using clusters between position inner plane and outer plane
+ //
+
+ const Double_t kMaxTheta = 1.0;
+ const Double_t kMaxPhi = 2.0;
+
+ const Double_t kRoad0y = 6.0; // Road for middle cluster
+ const Double_t kRoad0z = 8.5; // Road for middle cluster
+
+ const Double_t kRoad1y = 2.0; // Road in y for seeded cluster
+ const Double_t kRoad1z = 20.0; // Road in z for seeded cluster
+
+ const Double_t kRoad2y = 3.0; // Road in y for extrapolated cluster
+ const Double_t kRoad2z = 20.0; // Road in z for extrapolated cluster
+ const Int_t kMaxSeed = 3000;
+
+ Int_t maxSec = AliTRDgeometry::kNsect;
+
+ // Linear fitters in planes
+ TLinearFitter fitterTC(2,"hyp2"); // Fitting with tilting pads - kz fixed - kz= Z/x, + vertex const
+ TLinearFitter fitterT2(4,"hyp4"); // Fitting with tilting pads - kz not fixed
+ fitterTC.StoreData(kTRUE);
+ fitterT2.StoreData(kTRUE);
+ AliRieman rieman(1000); // Rieman fitter
+ AliRieman rieman2(1000); // Rieman fitter
+
+ // Find the maximal and minimal layer for the planes
+ Int_t layers[6][2];
+ AliTRDpropagationLayer *reflayers[6];
+ for (Int_t i = 0; i < 6; i++) {
+ layers[i][0] = 10000;
+ layers[i][1] = 0;
+ }
+ for (Int_t ns = 0; ns < maxSec; ns++) {
+ for (Int_t ilayer = 0; ilayer < fTrSec[ns]->GetNumberOfLayers(); ilayer++) {
+ AliTRDpropagationLayer &layer = *(fTrSec[ns]->GetLayer(ilayer));
+ if (layer == 0) {
+ continue;
+ }
+ Int_t det = layer[0]->GetDetector();
+ Int_t plane = fGeom->GetPlane(det);
+ if (ilayer < layers[plane][0]) {
+ layers[plane][0] = ilayer;
+ }
+ if (ilayer > layers[plane][1]) {
+ layers[plane][1] = ilayer;
+ }
+ }
+ }
+
+ AliTRDpadPlane *padPlane = AliTRDCommonParam::Instance()->GetPadPlane(0,0);
+ Double_t h01 = TMath::Tan(-TMath::Pi() / 180.0 * padPlane->GetTiltingAngle());
+ Double_t hL[6]; // Tilting angle
+ Double_t xcl[6]; // X - position of reference cluster
+ Double_t ycl[6]; // Y - position of reference cluster
+ Double_t zcl[6]; // Z - position of reference cluster
+
+ AliTRDcluster *cl[6] = { 0, 0, 0, 0, 0, 0 }; // Seeding clusters
+ Float_t padlength[6] = { 10.0, 10.0, 10.0, 10.0, 10.0, 10.0 }; // Current pad-length
+
+ Double_t chi2R = 0.0;
+ Double_t chi2Z = 0.0;
+ Double_t chi2RF = 0.0;
+ Double_t chi2ZF = 0.0;
+
+ Int_t nclusters; // Total number of clusters
+ for (Int_t i = 0; i < 6; i++) {
+ hL[i] = h01;
+ if (i%2==1) {
+ hL[i]*=-1.0;
+ }
+ }
+
+ // Registered seed
+ AliTRDseed *pseed = new AliTRDseed[kMaxSeed*6];
+ AliTRDseed *seed[kMaxSeed];
+ for (Int_t iseed = 0; iseed < kMaxSeed; iseed++) {
+ seed[iseed]= &pseed[iseed*6];
+ }
+ AliTRDseed *cseed = seed[0];
+
+ Double_t seedquality[kMaxSeed];
+ Double_t seedquality2[kMaxSeed];
+ Double_t seedparams[kMaxSeed][7];
+ Int_t seedlayer[kMaxSeed];
+ Int_t registered = 0;
+ Int_t sort[kMaxSeed];
+
+ //
+ // Seeding part
+ //
+ for (Int_t ns = 0; ns < maxSec; ns++) { // Loop over sectors
+ //for (Int_t ns = 0; ns < 5; ns++) { // Loop over sectors
+
+ registered = 0; // Reset registerd seed counter
+ cseed = seed[registered];
+ Float_t iter = 0.0;
+
+ for (Int_t sLayer = 2; sLayer >= 0; sLayer--) {
+ //for (Int_t dseed = 5; dseed < 15; dseed += 3) {
+
+ iter += 1.0;
+ Int_t dseed = 5 + Int_t(iter) * 3;
+
+ // Initialize seeding layers
+ for (Int_t ilayer = 0; ilayer < 6; ilayer++) {
+ reflayers[ilayer] = fTrSec[ns]->GetLayer(layers[ilayer][1]-dseed);
+ xcl[ilayer] = reflayers[ilayer]->GetX();
+ }
+
+ Double_t xref = (xcl[sLayer+1] + xcl[sLayer+2]) * 0.5;
+ AliTRDpropagationLayer &layer0 = *reflayers[sLayer+0];
+ AliTRDpropagationLayer &layer1 = *reflayers[sLayer+1];
+ AliTRDpropagationLayer &layer2 = *reflayers[sLayer+2];
+ AliTRDpropagationLayer &layer3 = *reflayers[sLayer+3];
+
+ Int_t maxn3 = layer3;
+ for (Int_t icl3 = 0; icl3 < maxn3; icl3++) {
+
+ AliTRDcluster *cl3 = layer3[icl3];
+ if (!cl3) {
+ continue;
+ }
+ padlength[sLayer+3] = TMath::Sqrt(cl3->GetSigmaZ2() * 12.0);
+ ycl[sLayer+3] = cl3->GetY();
+ zcl[sLayer+3] = cl3->GetZ();
+ Float_t yymin0 = ycl[sLayer+3] - 1.0 - kMaxPhi * (xcl[sLayer+3]-xcl[sLayer+0]);
+ Float_t yymax0 = ycl[sLayer+3] + 1.0 + kMaxPhi * (xcl[sLayer+3]-xcl[sLayer+0]);
+ Int_t maxn0 = layer0;
+
+ for (Int_t icl0 = layer0.Find(yymin0); icl0 < maxn0; icl0++) {
+
+ AliTRDcluster *cl0 = layer0[icl0];
+ if (!cl0) {
+ continue;
+ }
+ if (cl3->IsUsed() && cl0->IsUsed()) {
+ continue;
+ }
+ ycl[sLayer+0] = cl0->GetY();
+ zcl[sLayer+0] = cl0->GetZ();
+ if (ycl[sLayer+0] > yymax0) {
+ break;
+ }
+ Double_t tanphi = (ycl[sLayer+3]-ycl[sLayer+0]) / (xcl[sLayer+3]-xcl[sLayer+0]);
+ if (TMath::Abs(tanphi) > kMaxPhi) {
+ continue;
+ }
+ Double_t tantheta = (zcl[sLayer+3]-zcl[sLayer+0]) / (xcl[sLayer+3]-xcl[sLayer+0]);
+ if (TMath::Abs(tantheta) > kMaxTheta) {
+ continue;
+ }
+ padlength[sLayer+0] = TMath::Sqrt(cl0->GetSigmaZ2() * 12.0);
+
+ // Expected position in 1 layer
+ Double_t y1exp = ycl[sLayer+0] + (tanphi) * (xcl[sLayer+1]-xcl[sLayer+0]);
+ Double_t z1exp = zcl[sLayer+0] + (tantheta) * (xcl[sLayer+1]-xcl[sLayer+0]);
+ Float_t yymin1 = y1exp - kRoad0y - tanphi;
+ Float_t yymax1 = y1exp + kRoad0y + tanphi;
+ Int_t maxn1 = layer1;
+
+ for (Int_t icl1 = layer1.Find(yymin1); icl1 < maxn1; icl1++) {
+
+ AliTRDcluster *cl1 = layer1[icl1];
+ if (!cl1) {
+ continue;
+ }
+ Int_t nusedCl = 0;
+ if (cl3->IsUsed()) nusedCl++;
+ if (cl0->IsUsed()) nusedCl++;
+ if (cl1->IsUsed()) nusedCl++;
+ if (nusedCl > 1) {
+ continue;
+ }
+ ycl[sLayer+1] = cl1->GetY();
+ zcl[sLayer+1] = cl1->GetZ();
+ if (ycl[sLayer+1] > yymax1) {
+ break;
+ }
+ if (TMath::Abs(ycl[sLayer+1]-y1exp) > kRoad0y+tanphi) {
+ continue;
+ }
+ if (TMath::Abs(zcl[sLayer+1]-z1exp) > kRoad0z) {
+ continue;
+ }
+ padlength[sLayer+1] = TMath::Sqrt(cl1->GetSigmaZ2() * 12.0);
+
+ Double_t y2exp = ycl[sLayer+0]+(tanphi) * (xcl[sLayer+2]-xcl[sLayer+0]) + (ycl[sLayer+1]-y1exp);
+ Double_t z2exp = zcl[sLayer+0]+(tantheta) * (xcl[sLayer+2]-xcl[sLayer+0]);
+ Int_t index2 = layer2.FindNearestCluster(y2exp,z2exp,kRoad1y,kRoad1z);
+ if (index2 <= 0) {
+ continue;
+ }
+ AliTRDcluster *cl2 = (AliTRDcluster *) GetCluster(index2);
+ padlength[sLayer+2] = TMath::Sqrt(cl2->GetSigmaZ2() * 12.0);
+ ycl[sLayer+2] = cl2->GetY();
+ zcl[sLayer+2] = cl2->GetZ();
+ if (TMath::Abs(cl2->GetZ()-z2exp) > kRoad0z) {
+ continue;
+ }
+
+ rieman.Reset();
+ rieman.AddPoint(xcl[sLayer+0],ycl[sLayer+0],zcl[sLayer+0],1,10);
+ rieman.AddPoint(xcl[sLayer+1],ycl[sLayer+1],zcl[sLayer+1],1,10);
+ rieman.AddPoint(xcl[sLayer+3],ycl[sLayer+3],zcl[sLayer+3],1,10);
+ rieman.AddPoint(xcl[sLayer+2],ycl[sLayer+2],zcl[sLayer+2],1,10);
+ rieman.Update();
+
+ // Reset fitter
+ for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
+ cseed[iLayer].Reset();
+ }
+ chi2Z = 0.0;
+ chi2R = 0.0;
+
+ for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
+ cseed[sLayer+iLayer].SetZref(0,rieman.GetZat(xcl[sLayer+iLayer]));
+ chi2Z += (cseed[sLayer+iLayer].GetZref(0)- zcl[sLayer+iLayer])
+ * (cseed[sLayer+iLayer].GetZref(0)- zcl[sLayer+iLayer]);
+ cseed[sLayer+iLayer].SetZref(1,rieman.GetDZat(xcl[sLayer+iLayer]));
+ cseed[sLayer+iLayer].SetYref(0,rieman.GetYat(xcl[sLayer+iLayer]));
+ chi2R += (cseed[sLayer+iLayer].GetYref(0)- ycl[sLayer+iLayer])
+ * (cseed[sLayer+iLayer].GetYref(0)- ycl[sLayer+iLayer]);
+ cseed[sLayer+iLayer].SetYref(1,rieman.GetDYat(xcl[sLayer+iLayer]));
+ }
+ if (TMath::Sqrt(chi2R) > 1.0/iter) {
+ continue;
+ }
+ if (TMath::Sqrt(chi2Z) > 7.0/iter) {
+ continue;
+ }
+
+ Float_t minmax[2] = { -100.0, 100.0 };
+ for (Int_t iLayer = 0; iLayer < 4; iLayer++) {
+ Float_t max = zcl[sLayer+iLayer]+padlength[sLayer+iLayer] * 0.5
+ + 1.0 - cseed[sLayer+iLayer].GetZref(0);
+ if (max < minmax[1]) {
+ minmax[1] = max;
+ }
+ Float_t min = zcl[sLayer+iLayer]-padlength[sLayer+iLayer] * 0.5
+ - 1.0 - cseed[sLayer+iLayer].GetZref(0);
+ if (min > minmax[0]) {
+ minmax[0] = min;
+ }
+ }
+
+ Bool_t isFake = kFALSE;
+ if (cl0->GetLabel(0) != cl3->GetLabel(0)) {
+ isFake = kTRUE;
+ }
+ if (cl1->GetLabel(0) != cl3->GetLabel(0)) {
+ isFake = kTRUE;
+ }
+ if (cl2->GetLabel(0) != cl3->GetLabel(0)) {
+ isFake = kTRUE;
+ }
+
+ if (AliTRDReconstructor::StreamLevel() > 0) {
+ if ((!isFake) || ((icl3%10) == 0)) { // Debugging print
+ TTreeSRedirector &cstream = *fDebugStreamer;
+ cstream << "Seeds0"
+ << "isFake=" << isFake
+ << "Cl0.=" << cl0
+ << "Cl1.=" << cl1
+ << "Cl2.=" << cl2
+ << "Cl3.=" << cl3
+ << "Xref=" << xref
+ << "X0=" << xcl[sLayer+0]
+ << "X1=" << xcl[sLayer+1]
+ << "X2=" << xcl[sLayer+2]
+ << "X3=" << xcl[sLayer+3]
+ << "Y2exp=" << y2exp
+ << "Z2exp=" << z2exp
+ << "Chi2R=" << chi2R
+ << "Chi2Z=" << chi2Z
+ << "Seed0.=" << &cseed[sLayer+0]
+ << "Seed1.=" << &cseed[sLayer+1]
+ << "Seed2.=" << &cseed[sLayer+2]
+ << "Seed3.=" << &cseed[sLayer+3]
+ << "Zmin=" << minmax[0]
+ << "Zmax=" << minmax[1]
+ << "\n";
+ }
+ }
+
+ ////////////////////////////////////////////////////////////////////////////////////
+ //
+ // Fit seeding part
+ //
+ ////////////////////////////////////////////////////////////////////////////////////
+
+ cl[sLayer+0] = cl0;
+ cl[sLayer+1] = cl1;
+ cl[sLayer+2] = cl2;
+ cl[sLayer+3] = cl3;
+ Bool_t isOK = kTRUE;
+
+ for (Int_t jLayer = 0; jLayer < 4; jLayer++) {
+
+ cseed[sLayer+jLayer].SetTilt(hL[sLayer+jLayer]);
+ cseed[sLayer+jLayer].SetPadLength(padlength[sLayer+jLayer]);
+ cseed[sLayer+jLayer].SetX0(xcl[sLayer+jLayer]);
+
+ for (Int_t iter = 0; iter < 2; iter++) {
+
+ //
+ // 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 (iter > 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 (iter > 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 *cl = (AliTRDcluster *) GetCluster(index);
+
+ tseed.SetIndexes(iTime,index);
+ tseed.SetClusters(iTime,cl); // Register cluster
+ tseed.SetX(iTime,dxlayer); // Register cluster
+ tseed.SetY(iTime,cl->GetY()); // Register cluster
+ tseed.SetZ(iTime,cl->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 ((iter == 0) && tseed.IsOK()) {
+ cseed[sLayer+jLayer] = tseed;
+ quality = tquality;
+ if (tquality < 5) {
+ break;
+ }
+ }
+ if (tseed.IsOK() && (tquality < quality)) {
+ cseed[sLayer+jLayer] = tseed;
+ }
+
+ } // Loop: iter
+
+ 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 iter = 0; iter < 2; iter++) {
+
+ 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 *cl = (AliTRDcluster *) GetCluster(index);
+ tseed.SetIndexes(iTime,index);
+ tseed.SetClusters(iTime,cl); // Register cluster
+ tseed.SetX(iTime,dxlayer); // Register cluster
+ tseed.SetY(iTime,cl->GetY()); // Register cluster
+ tseed.SetZ(iTime,cl->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: iter
+
+ 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 iter = 0; iter < 4; iter++) {
+
+ // 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 (iter > 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 *cl = (AliTRDcluster *) GetCluster(index);
+
+ tseed.SetIndexes(iTime,index);
+ tseed.SetClusters(iTime,cl); // Register cluster
+ tseed.SetX(iTime,dxlayer); // Register cluster
+ tseed.SetY(iTime,cl->GetY()); // Register cluster
+ tseed.SetZ(iTime,cl->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: iter
+
+ 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 (AliTRDReconstructor::StreamLevel() > 0) {
+ cstream << "Seeds1"
+ << "isFake=" << isFake
+ << "Vertex=" << zvertex
+ << "Rieman2.=" << &rieman2
+ << "Rieman.=" << &rieman
+ << "Xref=" << xref
+ << "X0=" << xcl[0]
+ << "X1=" << xcl[1]
+ << "X2=" << xcl[2]
+ << "X3=" << xcl[3]
+ << "X4=" << xcl[4]
+ << "X5=" << xcl[5]
+ << "Chi2R=" << chi2R
+ << "Chi2Z=" << chi2Z
+ << "Chi2RF=" << chi2RF // Chi2 of trackletes on full track
+ << "Chi2ZF=" << chi2ZF // Chi2 z on tracklets on full track
+ << "Chi2ZT2=" << chi2ZT2 // Chi2 z on tracklets on full track - rieman tilt
+ << "Chi2ZTC=" << chi2ZTC // Chi2 z on tracklets on full track - rieman tilt const
+ << "Chi2TR=" << chi2TR // Chi2 without vertex constrain
+ << "Chi2TC=" << chi2TC // Chi2 with vertex constrain
+ << "C=" << curv // Non constrained - no tilt correction
+ << "DR=" << dR // DR parameter - tilt correction
+ << "DCA=" << dca // DCA - tilt correction
+ << "CR=" << cR // Non constrained curvature - tilt correction
+ << "CC=" << cC // Constrained curvature
+ << "Polz0=" << polz0c
+ << "Polz1=" << polz1c
+ << "RPolz0=" << rpolz0
+ << "RPolz1=" << rpolz1
+ << "Ncl=" << nclusters
+ << "Nlayers=" << nlayers
+ << "NUsedS=" << nusedCl
+ << "NUsed=" << nusedf
+ << "Findable=" << findable
+ << "Like=" << like
+ << "LikePrim=" << likePrim
+ << "Likechi2C=" << likechi2C
+ << "Likechi2TR=" << likechi2TR
+ << "Likezf=" << likezf
+ << "LikeF=" << seedquality2[registered]
+ << "S0.=" << &cseed[0]
+ << "S1.=" << &cseed[1]
+ << "S2.=" << &cseed[2]
+ << "S3.=" << &cseed[3]
+ << "S4.=" << &cseed[4]
+ << "S5.=" << &cseed[5]
+ << "SB0.=" << &seedb[0]
+ << "SB1.=" << &seedb[1]
+ << "SB2.=" << &seedb[2]
+ << "SB3.=" << &seedb[3]
+ << "SB4.=" << &seedb[4]
+ << "SB5.=" << &seedb[5]
+ << "Label=" << label
+ << "Freq=" << frequency
+ << "sLayer=" << sLayer
+ << "\n";
+ }
+ }
+
+ if (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
+ //
+
+ TMath::Sort(registered,seedquality2,sort,kTRUE);
+ Bool_t signedseed[kMaxSeed];
+ for (Int_t i = 0; i < registered; i++) {
+ signedseed[i] = kFALSE;
+ }
+
+ for (Int_t iter = 0; iter < 5; iter++) {
+
+ 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++;
+ }
+ }
+ }
+ }
+ }
+
+ }
+
+ if (nused > 30) {
+ continue;
+ }
+
+ if (iter == 0) {
+ if (nlayers < 6) {
+ continue;
+ }
+ if (TMath::Log(0.000000001+seedquality2[index]) < -5.0) {
+ continue; // Gold
+ }
+ }
+
+ if (iter == 1) {
+ if (nlayers < findable) {
+ continue;
+ }
+ if (TMath::Log(0.000000001+seedquality2[index]) < -4.0) {
+ continue;
+ }
+ }
+
+ if (iter == 2) {
+ if ((nlayers == findable) ||
+ (nlayers == 6)) {
+ continue;
+ }
+ if (TMath::Log(0.000000001+seedquality2[index]) < -6.0) {
+ continue;
+ }
+ }
+
+ if (iter == 3) {
+ if (TMath::Log(0.000000001+seedquality2[index]) < -5.0) {
+ continue;
+ }
+ }
+
+ if (iter == 4) {
+ if (TMath::Log(0.000000001+seedquality2[index]) - nused/(nlayers-3.0) < -15.0) {
+ continue;
+ }
+ }
+
+ signedseed[index] = kTRUE;
+
+ Int_t labels[1000];
+ Int_t outlab[1000];
+ Int_t nlab = 0;
+ for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
+ if (seed[index][iLayer].IsOK()) {
+ if (seed[index][iLayer].GetLabels(0) >= 0) {
+ labels[nlab] = seed[index][iLayer].GetLabels(0);
+ nlab++;
+ }
+ if (seed[index][iLayer].GetLabels(1) >= 0) {
+ labels[nlab] = seed[index][iLayer].GetLabels(1);
+ nlab++;
+ }
+ }
+ }
+ Freq(nlab,labels,outlab,kFALSE);
+ Int_t label = outlab[0];
+ Int_t frequency = outlab[1];
+ Freq(nlabelsall,labelsall,outlab,kFALSE);
+ Int_t label1 = outlab[0];
+ Int_t label2 = outlab[2];
+ Float_t fakeratio = (naccepted - outlab[1]) / Float_t(naccepted);
+ Float_t ratio = Float_t(nused) / Float_t(ncl);
+ if (ratio < 0.25) {
+ for (Int_t jLayer = 0; jLayer < 6; jLayer++) {
+ if ((seed[index][jLayer].IsOK()) &&
+ (TMath::Abs(seed[index][jLayer].GetYfit(1) - seed[index][jLayer].GetYfit(1)) < 0.2)) {
+ seed[index][jLayer].UseClusters(); // Sign gold
+ }
+ }
+ }
+
+ Int_t eventNr = esd->GetEventNumber();
+ TTreeSRedirector &cstream = *fDebugStreamer;
+
+ //
+ // Register seed
+ //
+ AliTRDtrack *track = RegisterSeed(seed[index],seedparams[index]);
+ AliTRDtrack dummy;
+ if (!track) {
+ track = &dummy;
+ }
+ else {
+ AliESDtrack esdtrack;
+ esdtrack.UpdateTrackParams(track,AliESDtrack::kTRDout);
+ esdtrack.SetLabel(label);
+ esd->AddTrack(&esdtrack);
+ TTreeSRedirector &cstream = *fDebugStreamer;
+ if (AliTRDReconstructor::StreamLevel() > 0) {
+ cstream << "Tracks"
+ << "EventNr=" << eventNr
+ << "ESD.=" << &esdtrack
+ << "trd.=" << track
+ << "trdback.=" << track
+ << "\n";
+ }
+ }
+
+ if (AliTRDReconstructor::StreamLevel() > 0) {
+ cstream << "Seeds2"
+ << "Iter=" << iter
+ << "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
+ << "EventNr=" << eventNr
+ << "\n";
+ }
+
+ } // Loop: iseed
+
+ } // Loop: iter
+
+ } // End of loop over sectors
+
+ delete [] pseed;
+
+}
+
+//_____________________________________________________________________________
+Int_t AliTRDtracker::ReadClusters(TObjArray *array, TTree *clusterTree) const
+{
+ //
+ // Reads AliTRDclusters (option >= 0) or AliTRDrecPoints (option < 0)
+ // from the file. The names of the cluster tree and branches
+ // should match the ones used in AliTRDclusterizer::WriteClusters()
+ //
+
+ Int_t nsize = Int_t(clusterTree->GetTotBytes() / (sizeof(AliTRDcluster)));
+ TObjArray *clusterArray = new TObjArray(nsize+1000);
+
+ TBranch *branch = clusterTree->GetBranch("TRDcluster");
+ if (!branch) {
+ AliError("Can't get the branch !");
+ return 1;
+ }
+ branch->SetAddress(&clusterArray);
+
+ // Loop through all entries in the tree
+ Int_t nEntries = (Int_t) clusterTree->GetEntries();
+ Int_t nbytes = 0;
+ AliTRDcluster *c = 0;
+ for (Int_t iEntry = 0; iEntry < nEntries; iEntry++) {
+
+ // Import the tree
+ nbytes += clusterTree->GetEvent(iEntry);
+
+ // Get the number of points in the detector
+ Int_t nCluster = clusterArray->GetEntriesFast();
+
+ // Loop through all TRD digits
+ for (Int_t iCluster = 0; iCluster < nCluster; iCluster++) {
+ c = (AliTRDcluster *) clusterArray->UncheckedAt(iCluster);
+ AliTRDcluster *co = c;
+ array->AddLast(co);
+ clusterArray->RemoveAt(iCluster);
+ }
+
+ }
+
+ delete clusterArray;
+
+ return 0;
+
+}
+
+//_____________________________________________________________________________
+Bool_t AliTRDtracker::GetTrackPoint(Int_t index, AliTrackPoint &p) const
+{
+ //
+ // Get track space point with index i
+ // Origin: C.Cheshkov
+ //
+
+ AliTRDcluster *cl = (AliTRDcluster *) fClusters->UncheckedAt(index);
+ Int_t idet = cl->GetDetector();
+ Int_t isector = fGeom->GetSector(idet);
+ Int_t ichamber = fGeom->GetChamber(idet);
+ Int_t iplan = fGeom->GetPlane(idet);
+ Double_t local[3];
+ local[0] = GetX(isector,iplan,cl->GetLocalTimeBin());
+ local[1] = cl->GetY();
+ local[2] = cl->GetZ();
+ Double_t global[3];
+ fGeom->RotateBack(idet,local,global);
+ p.SetXYZ(global[0],global[1],global[2]);
+ AliAlignObj::ELayerID iLayer = AliAlignObj::kTRD1;
+ switch (iplan) {
+ case 0:
+ iLayer = AliAlignObj::kTRD1;
+ break;
+ case 1:
+ iLayer = AliAlignObj::kTRD2;
+ break;
+ case 2:
+ iLayer = AliAlignObj::kTRD3;
+ break;
+ case 3:
+ iLayer = AliAlignObj::kTRD4;
+ break;
+ case 4:
+ iLayer = AliAlignObj::kTRD5;
+ break;
+ case 5:
+ iLayer = AliAlignObj::kTRD6;
+ break;
+ };
+ Int_t modId = isector * fGeom->Ncham() + ichamber;
+ UShort_t volid = AliAlignObj::LayerToVolUID(iLayer,modId);
+ p.SetVolumeID(volid);
+
+ return kTRUE;
+
+}
+
+//_____________________________________________________________________________
+void AliTRDtracker::CookLabel(AliKalmanTrack *pt, Float_t wrong) const
+{
+ //
+ // This cooks a label. Mmmmh, smells good...
+ //
+
+ Int_t label = 123456789;
+ Int_t index;
+ Int_t i;
+ Int_t j;
+ Int_t ncl = pt->GetNumberOfClusters();
+
+ const Int_t kRange = fTrSec[0]->GetOuterTimeBin() + 1;
+
+ Bool_t labelAdded;
+
+ Int_t **s = new Int_t* [kRange];
+ for (i = 0; i < kRange; i++) {
+ s[i] = new Int_t[2];
+ }
+ for (i = 0; i < kRange; i++) {
+ s[i][0] = -1;
+ s[i][1] = 0;
+ }
+
+ Int_t t0;
+ Int_t t1;
+ Int_t t2;
+
+ for (i = 0; i < ncl; i++) {
+ index = pt->GetClusterIndex(i);
+ AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index);
+ t0=c->GetLabel(0);
+ t1=c->GetLabel(1);
+ t2=c->GetLabel(2);
+ }
+
+ for (i = 0; i < ncl; i++) {
+ index = pt->GetClusterIndex(i);
+ AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index);
+ for (Int_t k = 0; k < 3; k++) {
+ label = c->GetLabel(k);
+ labelAdded = kFALSE;
+ j = 0;
+ if (label >= 0) {
+ while ((!labelAdded) && (j < kRange)) {
+ if ((s[j][0] == label) ||
+ (s[j][1] == 0)) {
+ s[j][0] = label;
+ s[j][1] = s[j][1] + 1;
+ labelAdded = kTRUE;
+ }
+ j++;
+ }
+ }
+ }
+ }
+
+ Int_t max = 0;
+ label = -123456789;
+
+ for (i = 0; i < kRange; i++) {
+ if (s[i][1] > max) {
+ max = s[i][1];
+ label = s[i][0];
+ }
+ }
+
+ for (i = 0; i < kRange; i++) {
+ delete []s[i];
+ }
+
+ delete []s;
+
+ if ((1.0 - Float_t(max)/ncl) > wrong) {
+ label = -label;
+ }
+
+ pt->SetLabel(label);
+
+}
+
+//_____________________________________________________________________________
+void AliTRDtracker::UseClusters(const AliKalmanTrack *t, Int_t from) const
+{
+ //
+ // Use clusters, but don't abuse them!
+ //
+
+ const Float_t kmaxchi2 = 18;
+ const Float_t kmincl = 10;
+
+ AliTRDtrack *track = (AliTRDtrack *) t;
+
+ Int_t ncl = t->GetNumberOfClusters();
+ for (Int_t i = from; i < ncl; i++) {
+ Int_t index = t->GetClusterIndex(i);
+ AliTRDcluster *c = (AliTRDcluster *) fClusters->UncheckedAt(index);
+ Int_t iplane = fGeom->GetPlane(c->GetDetector());
+ if (track->GetTracklets(iplane).GetChi2() > kmaxchi2) {
+ continue;
+ }
+ if (track->GetTracklets(iplane).GetN() < kmincl) {
+ continue;
+ }
+ if (!(c->IsUsed())) {
+ c->Use();
+ }
+ }
+
+}
+
+//_____________________________________________________________________________
+Double_t AliTRDtracker::ExpectedSigmaY2(Double_t , Double_t , Double_t ) const
+{
+ //
+ // Parametrised "expected" error of the cluster reconstruction in Y
+ //
+
+ Double_t s = 0.08 * 0.08;
+ return s;
+
+}
+
+//_____________________________________________________________________________
+Double_t AliTRDtracker::ExpectedSigmaZ2(Double_t , Double_t ) const
+{
+ //
+ // Parametrised "expected" error of the cluster reconstruction in Z
+ //
+
+ Double_t s = 9.0 * 9.0 / 12.0;
+ return s;
+
+}
+
+//_____________________________________________________________________________
+Double_t AliTRDtracker::GetX(Int_t sector, Int_t plane, Int_t localTB) const
+{
+ //
+ // Returns radial position which corresponds to time bin <localTB>
+ // in tracking sector <sector> and plane <plane>
+ //
+
+ Int_t index = fTrSec[sector]->CookTimeBinIndex(plane, localTB);
+ 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, Int_t plane)
+ :fN(0)
+ ,fSec(0)
+ ,fClusters(NULL)
+ ,fIndex(NULL)
+ ,fX(x)
+ ,fdX(dx)
+ ,fRho(rho)
+ ,fX0(radLength)
+ ,fTimeBinIndex(tbIndex)
+ ,fPlane(plane)
+ ,fYmax(0)
+ ,fYmaxSensitive(0)
+ ,fHole(kFALSE)
+ ,fHoleZc(0)
+ ,fHoleZmax(0)
+ ,fHoleYc(0)
+ ,fHoleYmax(0)
+ ,fHoleRho(0)
+ ,fHoleX0(0)
+{
+ //
+ // AliTRDpropagationLayer constructor
+ //
+
+ for (Int_t i = 0; i < (Int_t) kZones; i++) {
+ fZc[i] = 0;
+ fZmax[i] = 0;
+ }
+
+ if (fTimeBinIndex >= 0) {
+ fClusters = new AliTRDcluster*[kMaxClusterPerTimeBin];
+ fIndex = new UInt_t[kMaxClusterPerTimeBin];
+ }
+
+ for (Int_t i = 0; i < 5; i++) {
+ fIsHole[i] = kFALSE;
+ }
+
+}
+
+//_____________________________________________________________________________
+void AliTRDtracker::AliTRDpropagationLayer
+ ::SetHole(Double_t Zmax, Double_t Ymax, Double_t rho
+ , Double_t radLength, Double_t Yc, Double_t Zc)
+{
+ //
+ // Sets hole in the layer
+ //
+
+ fHole = kTRUE;
+ fHoleZc = Zc;
+ fHoleZmax = Zmax;
+ fHoleYc = Yc;
+ fHoleYmax = Ymax;
+ fHoleRho = rho;
+ fHoleX0 = radLength;
+
+}
+
+//_____________________________________________________________________________
+AliTRDtracker::AliTRDtrackingSector
+ ::AliTRDtrackingSector(AliTRDgeometry *geo, Int_t gs)
+ :fN(0)
+ ,fGeom(geo)
+ ,fGeomSector(gs)
+{
+ //
+ // AliTRDtrackingSector Constructor
+ //
+
+ AliTRDpadPlane *padPlane = 0;
+ AliTRDpropagationLayer *ppl = 0;
+
+ // Get holes description from geometry
+ Bool_t holes[AliTRDgeometry::kNcham];
+ for (Int_t icham = 0; icham < AliTRDgeometry::kNcham; icham++) {
+ holes[icham] = fGeom->IsHole(0,icham,gs);
+ }
+
+ for (UInt_t i = 0; i < kMaxTimeBinIndex; i++) {
+ fTimeBinIndex[i] = -1;
+ }
+
+ Double_t x;
+ Double_t dx;
+ Double_t rho;
+ Double_t radLength;
+
+ // Add layers for each of the planes
+ Double_t dxAmp = (Double_t) fGeom->CamHght(); // Amplification region
+ //Double_t dxDrift = (Double_t) fGeom->CdrHght(); // Drift region
+
+ const Int_t kNchambers = AliTRDgeometry::Ncham();
+ Int_t tbIndex;
+ Double_t ymax = 0;
+ Double_t ymaxsensitive = 0;
+ Double_t *zc = new Double_t[kNchambers];
+ Double_t *zmax = new Double_t[kNchambers];
+ Double_t *zmaxsensitive = new Double_t[kNchambers];
+
+ AliTRDCommonParam *commonParam = AliTRDCommonParam::Instance();
+ if (!commonParam) {
+ AliErrorGeneral("AliTRDtrackingSector::Ctor"
+ ,"Could not get common parameters\n");
+ return;
+ }
+
+ for (Int_t plane = 0; plane < AliTRDgeometry::Nplan(); plane++) {
+
+ ymax = fGeom->GetChamberWidth(plane) / 2.0;
+ padPlane = commonParam->GetPadPlane(plane,0);
+ ymaxsensitive = (padPlane->GetColSize(1) * padPlane->GetNcols() - 4.0) / 2.0;
+
+ for (Int_t ch = 0; ch < kNchambers; ch++) {
+ zmax[ch] = fGeom->GetChamberLength(plane,ch) / 2.0;
+ Float_t pad = padPlane->GetRowSize(1);
+ Float_t row0 = commonParam->GetRow0(plane,ch,0);
+ Int_t nPads = commonParam->GetRowMax(plane,ch,0);
+ zmaxsensitive[ch] = Float_t(nPads) * pad / 2.0;
+ zc[ch] = -(pad * nPads) / 2.0 + row0;
+ }
+
+ dx = AliTRDcalibDB::Instance()->GetVdrift(0,0,0)
+ / commonParam->GetSamplingFrequency();
+ rho = 0.00295 * 0.85; //????
+ radLength = 11.0;
+
+ Double_t x0 = (Double_t) AliTRDgeometry::GetTime0(plane);
+ //Double_t xbottom = x0 - dxDrift;
+ //Double_t xtop = x0 + dxAmp;
+
+ Int_t nTimeBins = AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
+ for (Int_t iTime = 0; iTime < nTimeBins; iTime++) {
+
+ Double_t xlayer = iTime * dx - dxAmp;
+ //if (xlayer<0) xlayer = dxAmp / 2.0;
+ x = x0 - xlayer;
+
+ tbIndex = CookTimeBinIndex(plane,iTime);
+ ppl = new AliTRDpropagationLayer(x,dx,rho,radLength,tbIndex,plane);
+ ppl->SetYmax(ymax,ymaxsensitive);
+ ppl->SetZ(zc,zmax,zmaxsensitive);
+ ppl->SetHoles(holes);
+ InsertLayer(ppl);
+
+ }
+
+ }
+
+ MapTimeBinLayers();
+
+ delete [] zc;
+ delete [] zmax;
+ delete [] zmaxsensitive;
+
+}
+
+//_____________________________________________________________________________
+AliTRDtracker::AliTRDtrackingSector
+ ::AliTRDtrackingSector(const AliTRDtrackingSector &/*t*/)
+ :fN(0)
+ ,fGeom(0)
+ ,fGeomSector(0)
+{
+ //
+ // Copy constructor
+ //
+
+}
+
+//_____________________________________________________________________________
+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>
+ //
+ //
+
+ Int_t tbPerPlane = AliTRDcalibDB::Instance()->GetNumberOfTimeBins();
+ Int_t gtb = (plane+1) * tbPerPlane - localTB - 1;
+ if (localTB < 0) {
+ return -1;
+ }
+ if (gtb < 0) {
+ return -1;
+ }
+
+ return gtb;
+
+}
+
+//_____________________________________________________________________________
+void AliTRDtracker::AliTRDtrackingSector
+ ::MapTimeBinLayers()
+{
+ //
+ // For all sensitive time bins sets corresponding layer index
+ // in the array fTimeBins
+ //
+
+ Int_t index;
+
+ for (Int_t i = 0; i < fN; i++) {
+
+ index = fLayers[i]->GetTimeBinIndex();
+
+ if (index < 0) {
+ continue;
+ }
+ if (index >= (Int_t) kMaxTimeBinIndex) {
+ //AliWarning(Form("Index %d exceeds allowed maximum of %d!\n"
+ // ,index,kMaxTimeBinIndex-1));
+ continue;
+ }
+
+ fTimeBinIndex[index] = i;
+
+ }
+
+}
+
+//_____________________________________________________________________________
+Int_t AliTRDtracker::AliTRDtrackingSector
+ ::GetLayerNumber(Double_t x) const
+{
+ //
+ // Returns the number of time bin which in radial position is closest to <x>
+ //
+
+ if (x >= fLayers[fN-1]->GetX()) {
+ return fN - 1;
+ }
+ if (x <= fLayers[ 0]->GetX()) {
+ return 0;
+ }
+
+ Int_t b = 0;
+ Int_t e = fN - 1;
+ Int_t m = (b + e) / 2;
+
+ for ( ; b < e; m = (b + e) / 2) {
+ if (x > fLayers[m]->GetX()) {
+ b = m + 1;
+ }
+ else {
+ e = m;
+ }
+ }
+
+ if (TMath::Abs(x - fLayers[m]->GetX()) > TMath::Abs(x - fLayers[m+1]->GetX())) {
+ return m + 1;
+ }
+ else {
+ return m;
+ }
+
+}
+
+//_____________________________________________________________________________
+Int_t AliTRDtracker::AliTRDtrackingSector
+ ::GetInnerTimeBin() const
+{
+ //
+ // Returns number of the innermost SENSITIVE propagation layer
+ //
+
+ return GetLayerNumber(0);
+
+}
+
+//_____________________________________________________________________________
+Int_t AliTRDtracker::AliTRDtrackingSector
+ ::GetOuterTimeBin() const
+{
+ //
+ // Returns number of the outermost SENSITIVE time bin
+ //
+
+ return GetLayerNumber(GetNumberOfTimeBins() - 1);
+
+}
+
+//_____________________________________________________________________________
+Int_t AliTRDtracker::AliTRDtrackingSector
+ ::GetNumberOfTimeBins() const
+{
+ //
+ // Returns number of SENSITIVE time bins
+ //
+
+ Int_t tb;
+ Int_t layer;
+
+ for (tb = kMaxTimeBinIndex - 1; tb >= 0; tb--) {
+ layer = GetLayerNumber(tb);
+ if (layer >= 0) {
+ break;
+ }
+ }
+
+ return tb + 1;
+
+}
+
+//_____________________________________________________________________________
+void AliTRDtracker::AliTRDtrackingSector
+ ::InsertLayer(AliTRDpropagationLayer *pl)
+{
+ //
+ // Insert layer <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;
+
+}
+
+//_____________________________________________________________________________
+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];
+ }
+
+}
+
+//_____________________________________________________________________________
+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
+ ::InsertCluster(AliTRDcluster *c, UInt_t index)
+{
+ //
+ // Insert cluster in cluster array.
+ // Clusters are sorted according to Y coordinate.
+ //
+
+ if (fTimeBinIndex < 0) {
+ //AliWarning("Attempt to insert cluster into non-sensitive time bin!\n");
+ return;
+ }
+
+ if (fN == (Int_t) kMaxClusterPerTimeBin) {
+ //AliWarning("Too many clusters !\n");
+ return;
+ }
+
+ 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++;
+
+}
+
+//_____________________________________________________________________________
+Int_t AliTRDtracker::AliTRDpropagationLayer::Find(Float_t y) const
+{
+ //
+ // Returns index of the cluster nearest in Y
+ //
+
+ if (fN <= 0) {
+ return 0;
+ }
+ if (y <= fClusters[0]->GetY()) {
+ return 0;
+ }
+ if (y > fClusters[fN-1]->GetY()) {
+ 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 (y > fClusters[m]->GetY()) {
+ b = m + 1;
+ }
+ else {
+ e = m;
+ }
+ }
+
+ return m;
+
+}
+
+//_____________________________________________________________________________
+Int_t AliTRDtracker::AliTRDpropagationLayer
+ ::FindNearestCluster(Float_t y, Float_t z, Float_t maxroad
+ , Float_t maxroadz) const
+{
+ //
+ // Returns index of the cluster nearest to the given y,z
+ //
+
+ Int_t index = -1;
+ Int_t maxn = fN;
+ Float_t mindist = maxroad;
+
+ for (Int_t i = Find(y-maxroad); i < maxn; i++) {
+ AliTRDcluster *c = (AliTRDcluster *) (fClusters[i]);
+ Float_t ycl = c->GetY();
+ if (ycl > (y + maxroad)) {
+ break;
+ }
+ if (TMath::Abs(c->GetZ() - z) > maxroadz) {
+ continue;
+ }
+ if (TMath::Abs(ycl - y) < mindist) {
+ mindist = TMath::Abs(ycl - y);
+ index = fIndex[i];
+ }
+ }
+
+ return index;
+
+}
+
+//_____________________________________________________________________________
+Double_t AliTRDtracker::GetTiltFactor(const AliTRDcluster *c)
+{
+ //
+ // Returns correction factor for tilted pads geometry
+ //
+
+ Int_t det = c->GetDetector();
+ Int_t plane = fGeom->GetPlane(det);
+ AliTRDpadPlane *padPlane = AliTRDCommonParam::Instance()->GetPadPlane(plane,0);
+ Double_t h01 = TMath::Tan(-TMath::Pi() / 180.0 * padPlane->GetTiltingAngle());
+
+ if (fNoTilt) {
+ h01 = 0;
+ }
+
+ return h01;
+
+}
+
+//_____________________________________________________________________________
+void AliTRDtracker::CookdEdxTimBin(AliTRDtrack &TRDtrack)
+{
+ //
+ // This is setting fdEdxPlane and fTimBinPlane
+ // Sums up the charge in each plane for track TRDtrack and also get the
+ // Time bin for Max. Cluster
+ // Prashant Shukla (shukla@physi.uni-heidelberg.de)
+ //
+
+ Double_t clscharge[AliESDtrack::kNPlane][AliESDtrack::kNSlice];
+ Double_t maxclscharge[AliESDtrack::kNPlane];
+ Int_t nCluster[AliESDtrack::kNPlane][AliESDtrack::kNSlice];
+ Int_t timebin[AliESDtrack::kNPlane];
+
+ // Initialization of cluster charge per plane.
+ for (Int_t iPlane = 0; iPlane < AliESDtrack::kNPlane; iPlane++) {
+ for (Int_t iSlice = 0; iSlice < AliESDtrack::kNSlice; iSlice++) {
+ clscharge[iPlane][iSlice] = 0.0;
+ nCluster[iPlane][iSlice] = 0;
+ }
+ }
+
+ // Initialization of cluster charge per plane.
+ for (Int_t iPlane = 0; iPlane < AliESDtrack::kNPlane; iPlane++) {
+ timebin[iPlane] = -1;
+ maxclscharge[iPlane] = 0.0;
+ }
+
+ // Loop through all clusters associated to track TRDtrack
+ Int_t nClus = TRDtrack.GetNumberOfClusters(); // from Kalmantrack
+ for (Int_t iClus = 0; iClus < nClus; iClus++) {
+ Double_t charge = TRDtrack.GetClusterdQdl(iClus);
+ Int_t index = TRDtrack.GetClusterIndex(iClus);
+ AliTRDcluster *pTRDcluster = (AliTRDcluster *) GetCluster(index);
+ if (!pTRDcluster) {
+ continue;
+ }
+ Int_t tb = pTRDcluster->GetLocalTimeBin();
+ if (!tb) {
+ continue;
+ }
+ Int_t detector = pTRDcluster->GetDetector();
+ Int_t iPlane = fGeom->GetPlane(detector);
+ Int_t iSlice = tb * AliESDtrack::kNSlice / AliTRDtrack::kNtimeBins;
+ clscharge[iPlane][iSlice] = clscharge[iPlane][iSlice] + charge;
+ if (charge > maxclscharge[iPlane]) {
+ maxclscharge[iPlane] = charge;
+ timebin[iPlane] = tb;
+ }
+ nCluster[iPlane][iSlice]++;
+ } // End of loop over cluster
+
+ // Setting the fdEdxPlane and fTimBinPlane variabales
+ Double_t totalCharge = 0.0;
+
+ for (Int_t iPlane = 0; iPlane < AliESDtrack::kNPlane; iPlane++) {
+ for (Int_t iSlice = 0; iSlice < AliESDtrack::kNSlice; iSlice++) {
+ if (nCluster[iPlane][iSlice]) {
+ clscharge[iPlane][iSlice] /= nCluster[iPlane][iSlice];
}
+ TRDtrack.SetPIDsignals(clscharge[iPlane][iSlice],iPlane,iSlice);
+ totalCharge = totalCharge+clscharge[iPlane][iSlice];
}
+ TRDtrack.SetPIDTimBin(timebin[iPlane],iPlane);
}
- else {
- branch = tree->GetBranch("Clusters");
- for (Int_t i=0; i<nentr; i++) {
- branch->SetAddress(&ioArray);
- tree->GetEvent(i);
- Int_t npoints = ioArray->GetEntriesFast();
- printf("Read %d clusters from entry %d \n", npoints, i);
+ // Still needed ????
+ // Int_t i;
+ // Int_t nc=TRDtrack.GetNumberOfClusters();
+ // Float_t dedx=0;
+ // for (i=0; i<nc; i++) dedx += TRDtrack.GetClusterdQdl(i);
+ // dedx /= nc;
+ // for (Int_t iPlane = 0; iPlane < kNPlane; iPlane++) {
+ // TRDtrack.SetPIDsignals(dedx, iPlane);
+ // TRDtrack.SetPIDTimBin(timbin[iPlane], iPlane);
+ // }
+
+}
+
+//_____________________________________________________________________________
+Int_t AliTRDtracker::FindClusters(Int_t sector, Int_t t0, Int_t t1
+ , AliTRDtrack *track
+ , Int_t *clusters, AliTRDtracklet &tracklet)
+{
+ //
+ //
+ // Try to find nearest clusters to the track in timebins from t0 to t1
+ //
+ // Correction coeficients - depend on TRD parameters - to be changed accordingly
+ //
+
+ Double_t x[100];
+ Double_t yt[100];
+ Double_t zt[100];
+ Double_t xmean = 0.0; // Reference x
+ Double_t dz[10][100];
+ Double_t dy[10][100];
+ Float_t zmean[100];
+ Float_t nmean[100];
+ Int_t clfound = 0;
+ Int_t indexes[10][100]; // Indexes of the clusters in the road
+ Int_t best[10][100]; // Index of best matching cluster
+ AliTRDcluster *cl[10][100]; // Pointers to the clusters in the road
+
+ for (Int_t it = 0; it < 100; 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 < 10;ih++) {
+ indexes[ih][it] = -2; // Reset indexes1
+ cl[ih][it] = 0;
+ dz[ih][it] = -100.0;
+ dy[ih][it] = -100.0;
+ best[ih][it] = 0;
+ }
+ }
+
+ Double_t x0 = track->GetX();
+ Double_t sigmaz = TMath::Sqrt(TMath::Abs(track->GetSigmaZ2()));
+ Int_t nall = 0;
+ Int_t nfound = 0;
+ Double_t h01 = 0.0;
+ Int_t plane = -1;
+ Int_t detector = -1;
+ Float_t padlength = 0.0;
+ AliTRDtrack track2(* track);
+ Float_t snpy = track->GetSnp();
+ Float_t tany = TMath::Sqrt(snpy*snpy / (1.0 - snpy*snpy));
+ if (snpy < 0.0) {
+ tany *= -1.0;
+ }
+
+ Double_t sy2 = ExpectedSigmaY2(x0,track->GetTgl(),track->GetPt());
+ Double_t sz2 = ExpectedSigmaZ2(x0,track->GetTgl());
+ Double_t road = 15.0 * TMath::Sqrt(track->GetSigmaY2() + sy2);
+ if (road > 6.0) {
+ road = 6.0;
+ }
+ //road = 20.0;
+
+ for (Int_t it = 0; it < t1-t0; it++) {
+
+ Double_t maxChi2[2] = { fgkMaxChi2, fgkMaxChi2 };
+ AliTRDpropagationLayer &timeBin = *(fTrSec[sector]->GetLayer(it+t0));
+ if (timeBin == 0) {
+ continue; // No indexes1
+ }
+
+ Int_t maxn = timeBin;
+ x[it] = timeBin.GetX();
+ track2.PropagateTo(x[it]);
+ yt[it] = track2.GetY();
+ zt[it] = track2.GetZ();
+
+ Double_t y = yt[it];
+ Double_t z = zt[it];
+ Double_t chi2 = 1000000.0;
+ nall++;
+
+ //
+ // Find 2 nearest cluster at given time bin
+ //
+ int checkPoint[4] = {0,0,0,0};
+ double minY = 123456789;
+ double minD[2] = {1,1};
+
+ for (Int_t i = timeBin.Find(y - road); i < maxn; i++) {
+ //for (Int_t i = 0; i < maxn; i++) {
+
+ AliTRDcluster *c = (AliTRDcluster *) (timeBin[i]);
+ h01 = GetTiltFactor(c);
+ if (plane < 0) {
+ Int_t det = c->GetDetector();
+ plane = fGeom->GetPlane(det);
+ padlength = TMath::Sqrt(c->GetSigmaZ2() * 12.0);
+ }
+
+ //if (c->GetLocalTimeBin()==0) continue;
+ if (c->GetY() > (y + road)) {
+ break;
+ }
+
+ fHDeltaX->Fill(c->GetX() - x[it]);
+ //printf("%f\t%f\t%f \n", c->GetX(), x[it], c->GetX()-x[it]);
+
+ if (TMath::Abs(c->GetY()-y) < TMath::Abs(minY)) {
+ minY = c->GetY()-y;
+ minD[0] = c->GetY()-y;
+ minD[1] = c->GetZ()-z;
+ }
+
+ checkPoint[0]++;
+
+ fHMinZ->Fill(c->GetZ() - z);
+ if ((c->GetZ() - z) * (c->GetZ() - z) > 2 * (12.0 * sz2)) {
+ continue;
+ }
+ checkPoint[1]++;
+
+ Double_t dist = TMath::Abs(c->GetZ() - z);
+ if (dist > (0.5 * padlength + 6.0 * sigmaz)) { // 0.5
+ continue; // 6 sigma boundary cut
+ }
+ checkPoint[2]++;
+
+ Double_t cost = 0.0;
+ // Sigma boundary cost function
+ 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;
+ }
+ }
+ //Int_t label = TMath::Abs(track->GetLabel());
+ //if (c->GetLabel(0)!=label && c->GetLabel(1)!=label&&c->GetLabel(2)!=label) continue;
+ chi2 = track2.GetPredictedChi2(c,h01) + cost;
+ clfound++;
+
+ if (chi2 > maxChi2[1]) {
+ continue;
+ }
+ checkPoint[3]++;
+
+ detector = c->GetDetector();
+ // Store the clusters in the road
+ for (Int_t ih = 2; ih < 9; ih++) {
+ if (cl[ih][it] == 0) {
+ cl[ih][it] = c;
+ indexes[ih][it] = timeBin.GetIndex(i); // Index - 9 - reserved for outliers
+ break;
+ }
+ }
+
+ if (chi2 < maxChi2[0]) {
+ maxChi2[1] = maxChi2[0];
+ maxChi2[0] = chi2;
+ indexes[1][it] = indexes[0][it];
+ cl[1][it] = cl[0][it];
+ indexes[0][it] = timeBin.GetIndex(i);
+ cl[0][it] = c;
+ continue;
+ }
+ maxChi2[1] = chi2;
+ cl[1][it] = c;
+ indexes[1][it] = timeBin.GetIndex(i);
+
+ }
+
+ for(int iCheckPoint = 0; iCheckPoint<4; iCheckPoint++)
+ fHFindCl[iCheckPoint]->Fill(checkPoint[iCheckPoint]);
+
+ if (checkPoint[3]) {
+ if (track->GetPt() > 0) fHMinYPos->Fill(minY);
+ else fHMinYNeg->Fill(minY);
+
+ fHMinD->Fill(minD[0], minD[1]);
+ }
+
+ if (cl[0][it]) {
+ nfound++;
+ xmean += x[it];
+ }
+
+ }
+
+ if (nfound < 4) {
+ return 0;
+ }
+ xmean /= Float_t(nfound); // Middle x
+ track2.PropagateTo(xmean); // Propagate track to the center
+
+ //
+ // Choose one of the variants
+ //
+ Int_t changes[10];
+ Float_t sumz = 0.0;
+ Float_t sum = 0.0;
+ Double_t sumdy = 0.0;
+ Double_t sumdy2 = 0.0;
+ Double_t sumx = 0.0;
+ Double_t sumxy = 0.0;
+ Double_t sumx2 = 0.0;
+ Double_t mpads = 0.0;
+
+ Int_t ngood[10];
+ Int_t nbad[10];
+
+ Double_t meanz[10];
+ Double_t moffset[10]; // Mean offset
+ Double_t mean[10]; // Mean value
+ Double_t angle[10]; // Angle
+
+ Double_t smoffset[10]; // Sigma of mean offset
+ Double_t smean[10]; // Sigma of mean value
+ Double_t sangle[10]; // Sigma of angle
+ Double_t smeanangle[10]; // Correlation
+
+ Double_t sigmas[10];
+ Double_t tchi2s[10]; // Chi2s for tracklet
+
+ for (Int_t it = 0; it < 10; it++) {
+
+ ngood[it] = 0;
+ nbad[it] = 0;
+
+ meanz[it] = 0.0;
+ moffset[it] = 0.0; // Mean offset
+ mean[it] = 0.0; // Mean value
+ angle[it] = 0.0; // Angle
+
+ smoffset[it] = 1.0e5; // Sigma of mean offset
+ smean[it] = 1.0e5; // Sigma of mean value
+ sangle[it] = 1.0e5; // Sigma of angle
+ smeanangle[it] = 0.0; // Correlation
+
+ sigmas[it] = 1.0e5;
+ tchi2s[it] = 1.0e5; // Chi2s for tracklet
+
+ }
+
+ //
+ // Calculate zmean
+ //
+ for (Int_t it = 0; it < t1 - t0; it++) {
+ if (!cl[0][it]) {
+ continue;
+ }
+ for (Int_t dt = -3; dt <= 3; dt++) {
+ if (it+dt < 0) {
+ continue;
+ }
+ if (it+dt > t1-t0) {
+ continue;
+ }
+ if (!cl[0][it+dt]) {
+ continue;
+ }
+ zmean[it] += cl[0][it+dt]->GetZ();
+ nmean[it] += 1.0;
+ }
+ zmean[it] /= nmean[it];
+ }
+
+ for (Int_t it = 0; it < t1 - t0; it++) {
+
+ best[0][it] = 0;
+
+ for (Int_t ih = 0; ih < 10; ih++) {
+ dz[ih][it] = -100.0;
+ dy[ih][it] = -100.0;
+ if (!cl[ih][it]) {
+ continue;
+ }
+ Double_t xcluster = cl[ih][it]->GetX();
+ Double_t ytrack;
+ Double_t ztrack;
+ track2.GetProlongation(xcluster,ytrack,ztrack );
+ dz[ih][it] = cl[ih][it]->GetZ()- ztrack; // Calculate distance from track in z
+ dy[ih][it] = cl[ih][it]->GetY() + dz[ih][it]*h01 - ytrack; // and in y
+ }
+
+ // Minimize changes
+ if (!cl[0][it]) {
+ continue;
+ }
+ if ((TMath::Abs(cl[0][it]->GetZ()-zmean[it]) > padlength * 0.8) &&
+ (cl[1][it])) {
+ if (TMath::Abs(cl[1][it]->GetZ()-zmean[it]) < padlength * 0.5) {
+ best[0][it] = 1;
+ }
+ }
+
+ }
+
+ //
+ // Iterative choice of "best path"
+ //
+ Int_t label = TMath::Abs(track->GetLabel());
+ Int_t bestiter = 0;
+
+ for (Int_t iter = 0; iter < 9; iter++) {
+
+ changes[iter] = 0;
+ sumz = 0;
+ sum = 0;
+ sumdy = 0;
+ sumdy2 = 0;
+ sumx = 0;
+ sumx2 = 0;
+ sumxy = 0;
+ mpads = 0;
+ ngood[iter] = 0;
+ nbad[iter] = 0;
+
+ // Linear fit
+ for (Int_t it = 0; it < t1 - t0; it++) {
+
+ if (!cl[best[iter][it]][it]) {
+ continue;
+ }
+
+ // Calculates pad-row changes
+ Double_t zbefore = cl[best[iter][it]][it]->GetZ();
+ Double_t zafter = cl[best[iter][it]][it]->GetZ();
+ for (Int_t itd = it - 1; itd >= 0; itd--) {
+ if (cl[best[iter][itd]][itd]) {
+ zbefore = cl[best[iter][itd]][itd]->GetZ();
+ break;
+ }
+ }
+ for (Int_t itd = it + 1; itd < t1 - t0; itd++) {
+ if (cl[best[iter][itd]][itd]) {
+ zafter = cl[best[iter][itd]][itd]->GetZ();
+ break;
+ }
+ }
+ if ((TMath::Abs(cl[best[iter][it]][it]->GetZ()-zbefore) > 0.1) &&
+ (TMath::Abs(cl[best[iter][it]][it]->GetZ()- zafter) > 0.1)) {
+ changes[iter]++;
+ }
+
+ Double_t dx = x[it]-xmean; // Distance to reference x
+ sumz += cl[best[iter][it]][it]->GetZ();
+ sum++;
+ sumdy += dy[best[iter][it]][it];
+ sumdy2 += dy[best[iter][it]][it]*dy[best[iter][it]][it];
+ sumx += dx;
+ sumx2 += dx*dx;
+ sumxy += dx*dy[best[iter][it]][it];
+ mpads += cl[best[iter][it]][it]->GetNPads();
+ if ((cl[best[iter][it]][it]->GetLabel(0) == label) ||
+ (cl[best[iter][it]][it]->GetLabel(1) == label) ||
+ (cl[best[iter][it]][it]->GetLabel(2) == label)) {
+ ngood[iter]++;
+ }
+ else {
+ nbad[iter]++;
+ }
+
+ }
+
+ //
+ // calculates line parameters
+ //
+ Double_t det = sum*sumx2 - sumx*sumx;
+ angle[iter] = (sum*sumxy - sumx*sumdy) / det;
+ mean[iter] = (sumx2*sumdy - sumx*sumxy) / det;
+ meanz[iter] = sumz / sum;
+ moffset[iter] = sumdy / sum;
+ mpads /= sum; // Mean number of pads
+
+ Double_t sigma2 = 0.0; // Normalized residuals - for line fit
+ Double_t sigma1 = 0.0; // Normalized residuals - constant fit
+
+ for (Int_t it = 0; it < t1 - t0; it++) {
+ if (!cl[best[iter][it]][it]) {
+ continue;
+ }
+ Double_t dx = x[it] - xmean;
+ Double_t ytr = mean[iter] + angle[iter] * dx;
+ sigma2 += (dy[best[iter][it]][it] - ytr)
+ * (dy[best[iter][it]][it] - ytr);
+ sigma1 += (dy[best[iter][it]][it] - moffset[iter])
+ * (dy[best[iter][it]][it] - moffset[iter]);
+ sum++;
+ }
+ sigma2 /= (sum - 2); // Normalized residuals
+ sigma1 /= (sum - 1); // Normalized residuals
+ smean[iter] = sigma2 * (sumx2 / det); // Estimated error2 of mean
+ sangle[iter] = sigma2 * ( sum / det); // Estimated error2 of angle
+ smeanangle[iter] = sigma2 * (-sumx / det); // Correlation
+ sigmas[iter] = TMath::Sqrt(sigma1);
+ smoffset[iter] = (sigma1 / sum) + 0.01*0.01; // Sigma of mean offset + unisochronity sigma
+
+ //
+ // Iterative choice of "better path"
+ //
+ for (Int_t it = 0; it < t1 - t0; it++) {
+
+ if (!cl[best[iter][it]][it]) {
+ continue;
+ }
+
+ // Add unisochronity + angular effect contribution
+ Double_t sigmatr2 = smoffset[iter] + 0.5*tany*tany;
+ Double_t sweight = 1.0/sigmatr2 + 1.0/track->GetSigmaY2();
+ Double_t weighty = (moffset[iter] / sigmatr2) / sweight; // Weighted mean
+ Double_t sigmacl = TMath::Sqrt(sigma1*sigma1 + track->GetSigmaY2());
+ Double_t mindist = 100000.0;
+ Int_t ihbest = 0;
+
+ for (Int_t ih = 0; ih < 10; ih++) {
+ if (!cl[ih][it]) {
+ break;
+ }
+ Double_t dist2 = (dy[ih][it] - weighty) / sigmacl;
+ dist2 *= dist2; // Chi2 distance
+ if (dist2 < mindist) {
+ mindist = dist2;
+ ihbest = ih;
+ }
+ }
+ best[iter+1][it] = ihbest;
+ }
+
+ //
+ // Update best hypothesy if better chi2 according tracklet position and angle
+ //
+ Double_t sy2 = smean[iter] + track->GetSigmaY2();
+ Double_t sa2 = sangle[iter] + track->GetSigmaSnp2(); // track->fCee;
+ Double_t say = track->GetSigmaSnpY(); // track->fCey;
+ //Double_t chi20 = mean[bestiter]*mean[bestiter ] / sy2+angle[bestiter]*angle[bestiter]/sa2;
+ //Double_t chi21 = mean[iter]*mean[iter] / sy2+angle[iter]*angle[iter]/sa2;
+
+ Double_t detchi = sy2*sa2 - say*say;
+ Double_t invers[3] = {sa2/detchi,sy2/detchi,-say/detchi}; // Inverse value of covariance matrix
+
+ Double_t chi20 = mean[bestiter] * mean[bestiter] * invers[0]
+ + angle[bestiter] * angle[bestiter] * invers[1]
+ + 2.0 * mean[bestiter] * angle[bestiter] * invers[2];
+ Double_t chi21 = mean[iter] * mean[iter] * invers[0]
+ + angle[iter] * angle[iter] * invers[1]
+ + 2.0 * mean[iter] * angle[iter] * invers[2];
+ tchi2s[iter] = chi21;
+
+ if ((changes[iter] <= changes[bestiter]) &&
+ (chi21 < chi20)) {
+ bestiter = iter;
+ }
+
+ }
+
+ //
+ // Set clusters
+ //
+ Double_t sigma2 = sigmas[0]; // Choose as sigma from 0 iteration
+ Short_t maxpos = -1;
+ Float_t maxcharge = 0.0;
+ Short_t maxpos4 = -1;
+ Float_t maxcharge4 = 0.0;
+ Short_t maxpos5 = -1;
+ Float_t maxcharge5 = 0.0;
+
+ //if (tchi2s[bestiter]>25.) sigma2*=tchi2s[bestiter]/25.;
+ //if (tchi2s[bestiter]>25.) sigma2=1000.; // dont'accept
+
+ Double_t exB = AliTRDcalibDB::Instance()->GetOmegaTau(AliTRDcalibDB::Instance()->GetVdrift(0,0,0)
+ ,-AliTracker::GetBz()*0.1);
+ Double_t expectederr = sigma2*sigma2 + 0.01*0.01;
+ if (mpads > 3.5) {
+ expectederr += (mpads - 3.5) * 0.04;
+ }
+ if (changes[bestiter] > 1) {
+ expectederr += changes[bestiter] * 0.01;
+ }
+ expectederr += (0.03 * (tany-exB)*(tany-exB)) * 15.0;
+ //if (tchi2s[bestiter]>18.) expectederr*= tchi2s[bestiter]/18.;
+ //expectederr+=10000;
+
+ for (Int_t it = 0; it < t1 - t0; it++) {
+
+ if (!cl[best[bestiter][it]][it]) {
+ continue;
+ }
+
+ cl[best[bestiter][it]][it]->SetSigmaY2(expectederr); // Set cluster error
+ if (!cl[best[bestiter][it]][it]->IsUsed()) {
+ cl[best[bestiter][it]][it]->SetY(cl[best[bestiter][it]][it]->GetY());
+ //cl[best[bestiter][it]][it]->Use();
+ }
+
+ // Time bins with maximal charge
+ if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge) {
+ maxcharge = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
+ maxpos = cl[best[bestiter][it]][it]->GetLocalTimeBin();
+ }
+
+ if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge4) {
+ if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 4) {
+ maxcharge4 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
+ maxpos4 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
+ }
+ }
+
+ if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge5) {
+ if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 5) {
+ maxcharge5 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
+ maxpos5 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
+ }
+ }
+
+ // Time bins with maximal charge
+ if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge) {
+ maxcharge = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
+ maxpos = cl[best[bestiter][it]][it]->GetLocalTimeBin();
+ }
+
+ if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge4) {
+ if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 4) {
+ maxcharge4 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
+ maxpos4 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
+ }
+ }
+
+ if (TMath::Abs(cl[best[bestiter][it]][it]->GetQ()) > maxcharge5) {
+ if (cl[best[bestiter][it]][it]->GetLocalTimeBin() >= 5) {
+ maxcharge5 = TMath::Abs(cl[best[bestiter][it]][it]->GetQ());
+ maxpos5 = cl[best[bestiter][it]][it]->GetLocalTimeBin();
+ }
+ }
+
+ clusters[it+t0] = indexes[best[bestiter][it]][it];
+
+ // Still needed ????
+ //if (cl[best[bestiter][it]][it]->GetLocalTimeBin()>4 &&
+ //cl[best[bestiter][it]][it]->GetLocalTimeBin()<18) clusters[it+t0]
+ // = indexes[best[bestiter][it]][it]; //Test
+
+ }
+
+ //
+ // 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);
+
+ // Set tracklet parameters
+ tracklet.Set(xmean
+ ,track2.GetY() + moffset[bestiter]
+ ,meanz[bestiter]
+ ,track2.GetAlpha()
+ ,trackleterr2);
+ tracklet.SetTilt(h01);
+ tracklet.SetP0(mean[bestiter]);
+ tracklet.SetP1(angle[bestiter]);
+ tracklet.SetN(nfound);
+ tracklet.SetNCross(changes[bestiter]);
+ tracklet.SetPlane(plane);
+ tracklet.SetSigma2(expectederr);
+ tracklet.SetChi2(tchi2s[bestiter]);
+ tracklet.SetMaxPos(maxpos,maxpos4,maxpos5);
+ track->SetTracklets(plane,tracklet);
+ track->SetNWrong(track->GetNWrong() + nbad[0]);
+
+ //
+ // Debuging part
+ //
+ TClonesArray array0("AliTRDcluster");
+ TClonesArray array1("AliTRDcluster");
+ array0.ExpandCreateFast(t1 - t0 + 1);
+ array1.ExpandCreateFast(t1 - t0 + 1);
+ TTreeSRedirector &cstream = *fDebugStreamer;
+ AliTRDcluster dummy;
+ Double_t dy0[100];
+ Double_t dyb[100];
+
+ for (Int_t it = 0; it < t1 - t0; it++) {
+ dy0[it] = dy[0][it];
+ dyb[it] = dy[best[bestiter][it]][it];
+ if (cl[0][it]) {
+ new(array0[it]) AliTRDcluster(*cl[0][it]);
+ }
+ else {
+ new(array0[it]) AliTRDcluster(dummy);
+ }
+ if(cl[best[bestiter][it]][it]) {
+ new(array1[it]) AliTRDcluster(*cl[best[bestiter][it]][it]);
+ }
+ else{
+ new(array1[it]) AliTRDcluster(dummy);
+ }
+ }
+ TGraph graph0(t1-t0,x,dy0);
+ TGraph graph1(t1-t0,x,dyb);
+ TGraph graphy(t1-t0,x,yt);
+ TGraph graphz(t1-t0,x,zt);
+
+ if (AliTRDReconstructor::StreamLevel() > 0) {
+ cstream << "tracklet"
+ << "track.=" << track // Track parameters
+ << "tany=" << tany // Tangent of the local track angle
+ << "xmean=" << xmean // Xmean - reference x of tracklet
+ << "tilt=" << h01 // Tilt angle
+ << "nall=" << nall // Number of foundable clusters
+ << "nfound=" << nfound // Number of found clusters
+ << "clfound=" << clfound // Total number of found clusters in road
+ << "mpads=" << mpads // Mean number of pads per cluster
+ << "plane=" << plane // Plane number
+ << "detector=" << detector // Detector number
+ << "road=" << road // The width of the used road
+ << "graph0.=" << &graph0 // x - y = dy for closest cluster
+ << "graph1.=" << &graph1 // x - y = dy for second closest cluster
+ << "graphy.=" << &graphy // y position of the track
+ << "graphz.=" << &graphz // z position of the track
+ //<< "fCl.=" << &array0 // closest cluster
+ //<< "fCl2.=" << &array1 // second closest cluster
+ << "maxpos=" << maxpos // Maximal charge postion
+ << "maxcharge=" << maxcharge // Maximal charge
+ << "maxpos4=" << maxpos4 // Maximal charge postion - after bin 4
+ << "maxcharge4=" << maxcharge4 // Maximal charge - after bin 4
+ << "maxpos5=" << maxpos5 // Maximal charge postion - after bin 5
+ << "maxcharge5=" << maxcharge5 // Maximal charge - after bin 5
+ << "bestiter=" << bestiter // Best iteration number
+ << "tracklet.=" << &tracklet // Corrspond to the best iteration
+ << "tchi20=" << tchi2s[0] // Chi2 of cluster in the 0 iteration
+ << "tchi2b=" << tchi2s[bestiter] // Chi2 of cluster in the best iteration
+ << "sigmas0=" << sigmas[0] // Residuals sigma
+ << "sigmasb=" << sigmas[bestiter] // Residulas sigma
+ << "ngood0=" << ngood[0] // Number of good clusters in 0 iteration
+ << "nbad0=" << nbad[0] // Number of bad clusters in 0 iteration
+ << "ngoodb=" << ngood[bestiter] // in best iteration
+ << "nbadb=" << nbad[bestiter] // in best iteration
+ << "changes0=" << changes[0] // Changes of pardrows in iteration number 0
+ << "changesb=" << changes[bestiter] // Changes of pardrows in best iteration
+ << "moffset0=" << moffset[0] // Offset fixing angle in iter=0
+ << "smoffset0=" << smoffset[0] // Sigma of offset fixing angle in iter=0
+ << "moffsetb=" << moffset[bestiter] // Offset fixing angle in iter=best
+ << "smoffsetb=" << smoffset[bestiter] // Sigma of offset fixing angle in iter=best
+ << "mean0=" << mean[0] // Mean dy in iter=0;
+ << "smean0=" << smean[0] // Sigma of mean dy in iter=0
+ << "meanb=" << mean[bestiter] // Mean dy in iter=best
+ << "smeanb=" << smean[bestiter] // Sigma of mean dy in iter=best
+ << "angle0=" << angle[0] // Angle deviation in the iteration number 0
+ << "sangle0=" << sangle[0] // Sigma of angular deviation in iteration number 0
+ << "angleb=" << angle[bestiter] // Angle deviation in the best iteration
+ << "sangleb=" << sangle[bestiter] // Sigma of angle deviation in the best iteration
+ << "expectederr=" << expectederr // Expected error of cluster position
+ << "\n";
+ }
+
+ return nfound;
+
+}
+
+//_____________________________________________________________________________
+Int_t AliTRDtracker::Freq(Int_t n, const Int_t *inlist
+ , Int_t *outlist, Bool_t down)
+{
+ //
+ // Sort eleements according occurancy
+ // The size of output array has is 2*n
+ //
+
+ Int_t *sindexS = new Int_t[n]; // Temporary array for sorting
+ Int_t *sindexF = new Int_t[2*n];
+ for (Int_t i = 0; i < n; i++) {
+ sindexF[i] = 0;
+ }
+
+ TMath::Sort(n,inlist,sindexS,down);
+
+ Int_t last = inlist[sindexS[0]];
+ Int_t val = last;
+ sindexF[0] = 1;
+ sindexF[0+n] = last;
+ Int_t countPos = 0;
+
+ // Find frequency
+ for (Int_t i = 1; i < n; i++) {
+ val = inlist[sindexS[i]];
+ if (last == val) {
+ sindexF[countPos]++;
+ }
+ else {
+ countPos++;
+ sindexF[countPos+n] = val;
+ sindexF[countPos]++;
+ last = val;
+ }
+ }
+ if (last == val) {
+ countPos++;
+ }
+
+ // Sort according frequency
+ TMath::Sort(countPos,sindexF,sindexS,kTRUE);
+
+ for (Int_t i = 0; i < countPos; i++) {
+ outlist[2*i ] = sindexF[sindexS[i]+n];
+ outlist[2*i+1] = sindexF[sindexS[i]];
+ }
+
+ delete [] sindexS;
+ delete [] sindexF;
+
+ return countPos;
+
+}
+
+//_____________________________________________________________________________
+AliTRDtrack *AliTRDtracker::RegisterSeed(AliTRDseed *seeds, Double_t *params)
+{
+ //
+ // Register a seed
+ //
- for(Int_t j=0; j<npoints; j++) {
- AliTRDcluster *c=(AliTRDcluster*)ioArray->UncheckedAt(j);
- array->AddLast(c);
- ioArray->RemoveAt(j);
+ 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 = 22; itime > 0; itime--) {
+ if (seeds[ilayer].GetIndexes(itime) > 0) {
+ index = seeds[ilayer].GetIndexes(itime);
+ cl = seeds[ilayer].GetClusters(itime);
+ break;
+ }
}
}
+ if (index > 0) {
+ break;
+ }
+ }
+ if (cl == 0) {
+ return 0;
+ }
+
+ AliTRDtrack *track = new AliTRDtrack(cl
+ ,index
+ ,¶ms[1]
+ ,c
+ ,params[0]
+ ,params[6]*alpha+shift);
+ track->PropagateTo(params[0]-5.0);
+ track->ResetCovariance(1);
+
+ Int_t rc = FollowBackProlongation(*track);
+ if (rc < 30) {
+ delete track;
+ track = 0;
+ }
+ else {
+ track->CookdEdx();
+ CookdEdxTimBin(*track);
+ CookLabel(track,0.9);
+ }
+
+ return track;
+}
+
+//////////////////////////////////////////////////////////////////////////////////////////
+
+void AliTRDtracker::InitLogHists() {
+
+ 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 *nameFindCl[4] = {"logTRD_clY", "logTRD_clZ", "logTRD_clB", "logTRD_clG"};
+
+ for(int i=0; i<4; i++) {
+ fHFindCl[i] = new TH1D(nameFindCl[i], "", 30, -0.5, 29.5);
+ }
+}
+
+//////////////////////////////////////////////////////////////////////////////////////////
+
+void AliTRDtracker::SaveLogHists() {
+
+ TDirectory *sav = gDirectory;
+ TFile *logFile = 0;
+
+ TSeqCollection *col = gROOT->GetListOfFiles();
+ int N = col->GetEntries();
+ for(int i=0; i<N; 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 i=0; i<4; i++)
+ fHFindCl[i]->Write(fHFindCl[i]->GetName(), TObject::kOverwrite);
- file->Close();
- savedir->cd();
+ logFile->Flush();
+ sav->cd();
}
+//////////////////////////////////////////////////////////////////////////////////////////
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff