/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
* See cxx source for full Copyright notice */
-#include <TNamed.h>
-#include <TH1.h>
+/* $Id$ */
+
+////////////////////////////////////////////////////////////////////////////
+// //
+// The TRD tracker //
+// //
+////////////////////////////////////////////////////////////////////////////
+
+#ifndef ROOT_TObjArray
+#include "TObjArray.h"
+#endif
+
+#ifndef ALITRACKER_H
+#include "AliTracker.h"
+#endif
+
+#ifndef ALITRDPROPAGATIONLAYER_H
+#include "AliTRDpropagationLayer.h"
+#endif
class TFile;
+class TTree;
+class TH1D;
+class TH2D;
class TParticle;
class TParticlePDG;
-class TObjArray;
+class TTreeSRedirector;
class AliTRDgeometry;
class AliTRDtrack;
-class AliTRDmcTrack;
-class AliTRDtrackingSector;
-
-class AliTRDtracker : public TNamed {
+class AliTRDtracklet;
+class AliTRDcluster;
+class AliTRDseed;
+class AliESDEvent;
+class AliTRDpropagationLayer;
+class AliTRDReconstructor;
+
+///////////////////////////////////////////////////////////////////////////////
+// //
+// The standard TRD tracker //
+// Based on Kalman filltering approach //
+// //
+///////////////////////////////////////////////////////////////////////////////
+
+class AliTRDtracker : public AliTracker {
public:
- AliTRDtracker();
- AliTRDtracker(const Text_t* name, const Text_t* title);
- ~AliTRDtracker();
-
- virtual void Clusters2Tracks(TH1F *hs, TH1F *hd);
- Double_t ExpectedSigmaY2(Double_t r, Double_t tgl, Double_t pt);
- Double_t ExpectedSigmaZ2(Double_t r, Double_t tgl);
- Int_t FindProlongation(AliTRDtrack& t, AliTRDtrackingSector *sec,
- Int_t s, Int_t rf=0, Int_t matched_index = -1,
- TH1F *hs=0, TH1F *hd=0);
- void GetEvent(const Char_t *hitfile, const Char_t *clusterfile);
- void SetUpSectors(AliTRDtrackingSector *sec);
- virtual void MakeSeeds(Int_t inner, Int_t outer, AliTRDtrackingSector *sec,
- Int_t turn, TH1F *hs, TH1F *hd);
- virtual void FindTracks(AliTRDtrackingSector *sec, TH1F *hs, TH1F *hd);
- virtual void UseClusters(AliTRDtrack t);
- virtual Int_t GetTrackLabel(AliTRDtrack t);
- Int_t WriteTracks(const Char_t *filename);
- void ReadClusters(TObjArray *array, const Char_t *filename);
-
- Float_t GetSeedGap() const {return fSeedGap;}
- Float_t GetSeedStep() const {return fSeedStep;}
- Float_t GetSeedDepth() const {return fSeedDepth;}
- Float_t GetSkipDepth() const {return fSkipDepth;}
- Double_t GetMaxChi2() const {return fMaxChi2;}
- Float_t GetMaxSeedC() const {return fMaxSeedC;}
- Float_t GetMaxSeedTan() const {return fMaxSeedTan;}
- Double_t GetSeedErrorSY() const {return fSeedErrorSY;}
- Double_t GetSeedErrorSY3() const {return fSeedErrorSY3;}
- Double_t GetSeedErrorSZ() const {return fSeedErrorSZ;}
- Float_t GetLabelFraction() const {return fLabelFraction;}
- Float_t GetWideRoad() const {return fWideRoad;}
-
- Float_t GetMinClustersInTrack() const {return fMinClustersInTrack;}
- Float_t GetMinClustersInSeed() const {return fMinClustersInSeed;}
- Float_t GetMaxSeedDeltaZ() const {return fMaxSeedDeltaZ;}
- Float_t GetMaxSeedVertexZ() const {return fMaxSeedVertexZ;}
-
- void SetSY2corr(Float_t w) {fSY2corr = w;}
+ void InitLogHists();
+ void SaveLogHists();
+ enum { kMaxLayersPerSector = 1000
+ , kMaxTimeBinIndex = 216
+ , kTrackingSectors = 18 };
+
+ AliTRDtracker(AliTRDReconstructor *rec = 0x0);
+ AliTRDtracker(const AliTRDtracker &t);
+ AliTRDtracker(const TFile *in, AliTRDReconstructor *rec = 0x0);
+ virtual ~AliTRDtracker();
+ AliTRDtracker &operator=(const AliTRDtracker &/*t*/) { return *this; }
+
+ void SetReconstructor(AliTRDReconstructor *rec) {fReconstructor = rec;}
+ void SetAddTRDseeds() { fAddTRDseeds = kTRUE; }
+ void SetNoTilt() { fNoTilt = kTRUE; }
+
+ Int_t GetTimeBinsPerPlane() const { return fTimeBinsPerPlane; }
+ Double_t GetMaxChi2() const { return fgkMaxChi2; }
+ Float_t GetLabelFraction() const { return fgkLabelFraction; }
+ Float_t GetMinClustersInTrack() const { return fgkMinClustersInTrack; }
+ Int_t GetLastPlane(AliTRDtrack *track);
+ Double_t GetTiltFactor(const AliTRDcluster *c);
+ virtual Bool_t GetTrackPoint(Int_t index, AliTrackPoint& p) const;
+ Double_t GetX(Int_t sec, Int_t plane, Int_t localTB) const;
+ Double_t GetX(Int_t sec, Int_t pl) const
+ { return fTrSec[sec]->GetLayer(pl)->GetX(); }
+ Int_t GetGlobalTimeBin(Int_t sec, Int_t plane, Int_t localTB) const
+ { return fTrSec[sec]->CookTimeBinIndex(plane,localTB); }
+ Double_t GetLayerNumber(Int_t sec, Double_t x) const
+ { return fTrSec[sec]->GetLayerNumber(x); }
+ AliCluster *GetCluster(Int_t index) const { if (index >= fNclusters) return NULL;
+ return (AliCluster *) fClusters->UncheckedAt(index); }
+
+ static Int_t Freq(Int_t n, const Int_t *inlist, Int_t *outlist, Bool_t down);
+ Int_t Clusters2Tracks(AliESDEvent *event);
+ Int_t PropagateBack(AliESDEvent *event);
+ Int_t RefitInward(AliESDEvent *event);
+
+ virtual void CookLabel(AliKalmanTrack *t, Float_t wrong) const;
+
+ Int_t LocalToGlobalID(Int_t lid);
+ Int_t GlobalToLocalID(Int_t gid);
+
+ Int_t LoadClusters(TTree *cTree);
+ void UnloadClusters();
+ virtual void UseClusters(const AliKalmanTrack *t, Int_t from = 0) const;
+ Int_t ReadClusters(TObjArray *array, TTree *in) const;
+ AliTRDcluster *GetCluster(AliTRDtrack *track, Int_t plane, Int_t timebin, UInt_t &index);
+ Int_t FindClusters(Int_t sector, Int_t t0, Int_t t1, AliTRDtrack *track
+ , Int_t *clusters, AliTRDtracklet &tracklet);
+
protected:
- Int_t fEvent; // Event number
-
- AliTRDgeometry *fGeom; // Pointer to TRD geometry
+ Bool_t AdjustSector(AliTRDtrack *track);
+ AliTRDtrack *RegisterSeed(AliTRDseed *seeds, Double_t *params);
+ Int_t FollowBackProlongation(AliTRDtrack &t);
+ //void MakeSeedsMI(Int_t inner, Int_t outer, AliESDEvent *esd = 0);
+
+ protected:
- Int_t fNclusters; // Number of clusters in TRD
- TObjArray *fClusters; // List of clusters for all sectors
+ //__________________________________________________________________________________________________
+ class AliTRDtrackingSector {
+
+ public:
+
+ AliTRDtrackingSector(AliTRDgeometry* geo, Int_t gs);
+ AliTRDtrackingSector(const AliTRDtrackingSector &/*t*/);
+ ~AliTRDtrackingSector();
+
+ AliTRDtrackingSector &operator=(const AliTRDtrackingSector &/*t*/) { return *this; }
+
+ Int_t GetNumberOfLayers() const { return fN; }
+ Int_t GetNumberOfTimeBins() const;
+ Int_t GetLayerNumber(Double_t x) const;
+ Int_t GetInnerTimeBin() const;
+ Int_t GetOuterTimeBin() const;
+ Int_t GetLayerNumber(Int_t tb) const { return fTimeBinIndex[tb]; }
+ Double_t GetX(Int_t pl) const { return fLayers[pl]->GetX(); }
+ AliTRDpropagationLayer* GetLayer(Int_t i) { return fLayers[i]; }
+ Int_t GetSector() const {return fGeomSector;}
+
+ void MapTimeBinLayers();
+ Int_t Find(Double_t x) const;
+ void InsertLayer(AliTRDpropagationLayer *pl);
+ Int_t CookTimeBinIndex(Int_t plane, Int_t localTB) const;
+
+ private:
+
+ Int_t fN; // Total number of layers
+ AliTRDgeometry *fGeom; // Geometry
+ AliTRDpropagationLayer *fLayers[kMaxLayersPerSector]; // Layers
+ Int_t fTimeBinIndex[kMaxTimeBinIndex]; // Time bin index
+ Int_t fGeomSector; // Sector# in AliTRDgeometry
+
+ };
+
+ protected:
+ AliTRDReconstructor *fReconstructor;
+ AliTRDgeometry *fGeom; // Pointer to TRD geometry
+ AliTRDtrackingSector *fTrSec[kTrackingSectors]; // Array of tracking sectors;
+ Int_t fNclusters; // Number of clusters in TRD
+ TObjArray *fClusters; // List of clusters for all sectors
+ Int_t fNseeds; // Number of track seeds
+ TObjArray *fSeeds; // List of track seeds
+ Int_t fNtracks; // Number of reconstructed tracks
+ TObjArray *fTracks; // List of reconstructed tracks
+ Int_t fTimeBinsPerPlane; // Timebins per plane in track prolongation
+
+ static const Double_t fgkMaxChi2; // Max increment in track chi2
+ static const Float_t fgkMinClustersInTrack; // Min number of clusters in track
+ static const Float_t fgkLabelFraction; // Min fraction of same label
+ static const Double_t fgkMaxSnp; // Maximal snp for tracking
+ static const Double_t fgkMaxStep; // Maximal step for tracking
+
+ Bool_t fAddTRDseeds; // Something else
+ Bool_t fNoTilt; // No tilt, or what?
+
+ // Histograms
+ TH1D *fHBackfit; // QA histogram
+ TH1D *fHClSearch; // QA histogram
+ TH1D *fHRefit; // QA histogram
+ TH1D *fHX; // QA histogram
+ TH1D *fHNCl; // QA histogram
+ TH1D *fHNClTrack; // QA histogram
+ TH1D *fHFindCl[4]; // QA histogram
+ TH1D *fHMinYPos; // QA histogram
+ TH1D *fHMinYNeg; // QA histogram
+ TH1D *fHMinZ; // QA histogram
+ TH2D *fHMinD; // QA histogram
+ TH1D *fHDeltaX; // QA histogram
+ TH1D *fHXCl; // QA histogram
- Int_t fNseeds; // Number of track seeds
- TObjArray *fSeeds; // List of track seeds
-
- Int_t fNtracks; // Number of reconstructed tracks
- TObjArray *fTracks; // List of reconstructed tracks
+ protected:
- Float_t fSY2corr; // Correction coefficient for
- // cluster SigmaY2
+ Int_t FollowProlongation(AliTRDtrack &t);
+ Int_t PropagateToX(AliTRDtrack &t, Double_t xToGo, Double_t maxStep);
+ Double_t ExpectedSigmaY2(Double_t r, Double_t tgl, Double_t pt) const;
+ Double_t ExpectedSigmaZ2(Double_t r, Double_t tgl) const;
- static const Float_t fSeedGap; // Distance between inner and outer
- // time bin in seeding
- // (fraction of all time bins)
-
- static const Float_t fSeedStep; // Step in iterations
- static const Float_t fSeedDepth; // Fraction of TRD allocated for seeding
- static const Float_t fSkipDepth; // Fraction of TRD which can be skipped
- // in track prolongation
- static const Double_t fMaxChi2; // max increment in track chi2
-
- static const Float_t fMinClustersInTrack; // min fraction of clusters in track
- static const Float_t fMinClustersInSeed; // min fraction of clusters in seed
- static const Float_t fMaxSeedDeltaZ; // max dZ in MakeSeeds
- static const Float_t fMaxSeedDeltaZ12; // max abs(z1-z2) in MakeSeeds
- static const Float_t fMaxSeedC; // max initial curvature in MakeSeeds
- static const Float_t fMaxSeedTan; // max initial Tangens(lambda) in MakeSeeds
- static const Float_t fMaxSeedVertexZ; // max vertex Z in MakeSeeds
- static const Double_t fSeedErrorSY; // sy parameter in MakeSeeds
- static const Double_t fSeedErrorSY3; // sy3 parameter in MakeSeeds
- static const Double_t fSeedErrorSZ; // sz parameter in MakeSeeds
- static const Float_t fLabelFraction; // min fraction of clusters in GetTrackLabel
- static const Float_t fWideRoad; // max road width in FindProlongation
- ClassDef(AliTRDtracker,1) // manager base class
-
+ TTreeSRedirector *fDebugStreamer; //!Debug streamer
+
+ ClassDef(AliTRDtracker, 4) // TRD tracker
+
};
+
#endif
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