/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
* See cxx source for full Copyright notice */
-#include "AliTracker.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 TTreeSRedirector;
class AliTRDgeometry;
-class AliTRDparameter;
class AliTRDtrack;
class AliTRDtracklet;
class AliTRDcluster;
-class AliESD;
-class TTreeSRedirector;
-
-const unsigned kMaxLayersPerSector = 1000;
-const unsigned kMaxTimeBinIndex = 216; // (30 drift + 6 ampl) * 6 planes
-const unsigned kMaxClusterPerTimeBin = 7000;
-const unsigned kZones = 5;
-const Int_t kTrackingSectors = 18;
-
-class AliTRDseed : public TObject{
- friend class AliTRDtracker;
- public:
- AliTRDseed(); // default constructor
- ~AliTRDseed(){}; // default constructor
- static void EvaluateUni(Int_t nvectors, Double_t *data, Double_t &mean, Double_t &sigma, Int_t hh);
- static Float_t FitRiemanTilt(AliTRDseed * seed, Bool_t error);
- void UseClusters(); // use clusters
- void Update(); // update information - without tilt correction
- void CookLabels(); // cook label
- void UpdateUsed();
- void Reset(); // reset seed
- Bool_t isOK(){return fN2>8;}
- private:
- Float_t fTilt; // tilting angle
- Float_t fPadLength; // pad length
- Float_t fX0; // x0 position
- Float_t fX[25]; // !x position
- Float_t fY[25]; // !y position
- Float_t fZ[25]; // !z position
- Int_t fIndexes[25]; // !indexes
- AliTRDcluster *fClusters[25]; // !clusters
- Bool_t fUsable[25]; // !indication - usable cluster
- Float_t fYref[2]; // reference y
- Float_t fZref[2]; // reference z
- Float_t fYfit[2]; // y fit position +derivation
- Float_t fYfitR[2]; // y fit position +derivation
- Float_t fZfit[2]; // z fit position
- Float_t fZfitR[2]; // z fit position
- Float_t fSigmaY; // "robust" sigma in Y - constant fit
- Float_t fSigmaY2; // "robust" sigma in Y - line fit
- Float_t fMeanz; // mean vaue of z
- Float_t fZProb; // max probbable z
- Int_t fLabels[2]; // labels
- Int_t fN; // number of associated clusters
- Int_t fN2; // number of not crossed
- Int_t fNUsed; // number of used clusters
- Int_t fFreq; // freq
- Int_t fNChange; // change z counter
- Float_t fMPads; // mean number of pads per cluster
- // global
- //
- Float_t fC; // curvature
- Float_t fCC; // curvature with constrain
- Float_t fChi2; // global chi2
- Float_t fChi2Z; // global chi2
- private:
- ClassDef(AliTRDseed,1)
-};
-
+class AliTRDseed;
+class AliESDEvent;
+class AliTRDpropagationLayer;
+class AliTRDReconstructor;
+
+///////////////////////////////////////////////////////////////////////////////
+// //
+// The standard TRD tracker //
+// Based on Kalman filltering approach //
+// //
+///////////////////////////////////////////////////////////////////////////////
class AliTRDtracker : public AliTracker {
public:
+ void InitLogHists();
+ void SaveLogHists();
- AliTRDtracker();
- AliTRDtracker(const TFile *in);
- virtual ~AliTRDtracker();
- static Int_t Freq(Int_t n, const Int_t *inlist, Int_t *outlist, Bool_t down);
- Int_t Clusters2Tracks(AliESD* event);
- Int_t PropagateBack(AliESD* event);
- Int_t RefitInward(AliESD* event);
+ enum { kMaxLayersPerSector = 1000
+ , kMaxTimeBinIndex = 216
+ , kTrackingSectors = 18 };
- Int_t LoadClusters(TTree *cTree);
- void UnloadClusters();
- AliCluster *GetCluster(Int_t index) const { if (index >= fNclusters) return NULL;
- return (AliCluster*) fClusters->UncheckedAt(index); };
- Bool_t GetTrackPoint(Int_t index, AliTrackPoint& p) const;
- virtual void CookLabel(AliKalmanTrack *t,Float_t wrong) const;
- virtual void UseClusters(const AliKalmanTrack *t, Int_t from=0) const;
+ AliTRDtracker(AliTRDReconstructor *rec = NULL);
+ AliTRDtracker(const AliTRDtracker &t);
+ AliTRDtracker(const TFile *in, AliTRDReconstructor *rec = NULL);
+ virtual ~AliTRDtracker();
+ AliTRDtracker &operator=(const AliTRDtracker &/*t*/) { return *this; }
- void SetAddTRDseeds() { fAddTRDseeds = kTRUE; }
- void SetNoTilt() { fNoTilt = kTRUE; }
-
- Double_t GetTiltFactor(const AliTRDcluster* c);
-
- Int_t ReadClusters(TObjArray *array, TTree *in) const;
- Int_t CookSectorIndex(Int_t gs) const { return kTrackingSectors - 1 - gs; }
- AliTRDcluster * GetCluster(AliTRDtrack * track, Int_t plane, Int_t timebin, UInt_t &index);
- Int_t GetLastPlane(AliTRDtrack * track); //return last updated plane
- Int_t FindClusters(Int_t sector, Int_t t0, Int_t t1, AliTRDtrack * track, Int_t *clusters, AliTRDtracklet& tracklet);
-
- Float_t GetSeedGap() const {return fgkSeedGap;}
- Int_t GetMaxGap() const {return fMaxGap;}
- Int_t GetTimeBinsPerPlane() const {return fTimeBinsPerPlane;}
- Float_t GetSeedStep() const {return fgkSeedStep;}
- Float_t GetSeedDepth() const {return fgkSeedDepth;}
- Float_t GetSkipDepth() const {return fgkSkipDepth;}
- Double_t GetMaxChi2() const {return fgkMaxChi2;}
- Float_t GetMaxSeedC() const {return fgkMaxSeedC;}
- Float_t GetMaxSeedTan() const {return fgkMaxSeedTan;}
- Double_t GetSeedErrorSY() const {return fgkSeedErrorSY;}
- Double_t GetSeedErrorSY3() const {return fgkSeedErrorSY3;}
- Double_t GetSeedErrorSZ() const {return fgkSeedErrorSZ;}
- Float_t GetLabelFraction() const {return fgkLabelFraction;}
- Float_t GetWideRoad() const {return fgkWideRoad;}
-
- Float_t GetMinClustersInTrack() const {return fgkMinClustersInTrack;}
- Float_t GetMinClustersInSeed() const {return fgkMinClustersInSeed;}
- Float_t GetMaxSeedDeltaZ() const {return fgkMaxSeedDeltaZ;}
- Float_t GetMaxSeedVertexZ() const {return fgkMaxSeedVertexZ;}
-
- // x <-> timebin conversions useful in analysis macros
- 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); }
-
- class AliTRDpropagationLayer {
- // ***************** internal class *******************
- public:
- AliTRDpropagationLayer(Double_t x, Double_t dx, Double_t rho,
- Double_t x0, Int_t tbIndex);
-
- ~AliTRDpropagationLayer() {
- if(fTimeBinIndex >= 0) { delete[] fClusters; delete[] fIndex; }
- }
- void InsertCluster(AliTRDcluster *c, UInt_t index);
- operator Int_t() const {return fN;}
- AliTRDcluster* operator[](Int_t i) {return fClusters[i];}
- UInt_t GetIndex(Int_t i) const {return fIndex[i];}
- Double_t GetX() const { return fX; }
- Double_t GetdX() const { return fdX; }
- Double_t GetRho() const { return fRho; }
- Double_t GetX0() const { return fX0; }
- Int_t GetTimeBinIndex() const { return fTimeBinIndex; }
- Bool_t GetPropagationParameters(Double_t y, Double_t z,
- Double_t &dx, Double_t &rho, Double_t &x0,
- Bool_t &lookForCluster) const;
- Int_t GetZone( Double_t z) const;
- Int_t Find(Float_t y) const;
- Int_t FindNearestCluster(Float_t y, Float_t z, Float_t maxroad, Float_t maxroadz) const;
- void SetZmax(Int_t cham, Double_t center, Double_t w)
- { fZc[cham] = center; fZmax[cham] = w; }
- void SetZ(Double_t* center, Double_t *w, Double_t *wsensitive);
- void SetHoles(Bool_t* holes);
- void SetYmax(Double_t w, Double_t wsensitive) { fYmax = w; fYmaxSensitive = wsensitive; }
- Double_t GetYmax() const { return fYmax; }
- Double_t GetZmax(Int_t c) const { return fZmax[c]; }
- Double_t GetZc(Int_t c) const { return fZc[c]; }
-
- void SetHole(Double_t Zmax, Double_t Ymax,
- Double_t rho = 1.29e-3, Double_t x0 = 36.66,
- Double_t Yc = 0, Double_t Zc = 0);
-
- Bool_t IsSensitive() const {return (fTimeBinIndex>=0)? kTRUE: kFALSE;}
-
- void Clear() {for(Int_t i=0; i<fN; i++) fClusters[i] = NULL; fN = 0;}
- Bool_t IsHole(Int_t zone) const { return fIsHole[zone];}
- private:
-
- Int_t fN; // this is fN
- Int_t fSec; // sector mumber
- AliTRDcluster **fClusters; // array of pointers to clusters
- UInt_t *fIndex; // array of cluster indexes
- Double_t fX; // x coordinate of the middle plane
- Double_t fdX; // radial thickness of the time bin
- Double_t fRho; // default density of the material
- Double_t fX0; // default radiation length
- Int_t fTimeBinIndex; // plane * F(local_tb)
- Double_t fZc[kZones]; // Z position of the center for 5 active areas
- Double_t fZmax[kZones]; // half of active area length in Z
- Double_t fZmaxSensitive[kZones]; //sensitive area for detection Z
- Bool_t fIsHole[kZones]; //is hole in given sector
- Double_t fYmax; // half of active area length in Y
- Double_t fYmaxSensitive; // half of active area length in Y
+ void SetReconstructor(AliTRDReconstructor * const 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 *const 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 * const 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:
- Bool_t fHole; // kTRUE if there is a hole in the layer
- Double_t fHoleZc; // Z of the center of the hole
- Double_t fHoleZmax; // half of the hole length in Z
- Double_t fHoleYc; // Y of the center of the hole
- Double_t fHoleYmax; // half of the hole length in Y
- Double_t fHoleRho; // density of the gas in the hole
- Double_t fHoleX0; // radiation length of the gas in the hole
- };
+ Bool_t AdjustSector(AliTRDtrack *const track) const;
+ AliTRDtrack *RegisterSeed(AliTRDseed * const seeds, Double_t *params);
+ Int_t FollowBackProlongation(AliTRDtrack &t);
+ //void MakeSeedsMI(Int_t inner, Int_t outer, AliESDEvent *esd = 0);
+
+ protected:
- class AliTRDtrackingSector {
+ //__________________________________________________________________________________________________
+ class AliTRDtrackingSector {
+
public:
- AliTRDtrackingSector(AliTRDgeometry* geo, Int_t gs, AliTRDparameter* par);
- ~AliTRDtrackingSector() { for(Int_t i=0; i<fN; i++) delete fLayers[i]; }
- Int_t GetNumberOfLayers() const { return fN; }
- Int_t GetNumberOfTimeBins() const;
- Double_t GetX(Int_t pl) const { return fLayers[pl]->GetX(); }
- void MapTimeBinLayers();
- 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];}
- Float_t GetTzeroShift() const { return fTzeroShift; }
- Int_t Find(Double_t x) const;
- void InsertLayer(AliTRDpropagationLayer* pl);
- // AliTRDpropagationLayer* operator[](Int_t i) { return fLayers[i]; }
- AliTRDpropagationLayer* GetLayer(Int_t i) { return fLayers[i]; }
- Int_t CookTimeBinIndex(Int_t plane, Int_t localTB) const;
-
+
+ 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) const { 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
- AliTRDparameter *fPar; // parameter
- AliTRDpropagationLayer *fLayers[kMaxLayersPerSector]; // layers
- Int_t fTimeBinIndex[kMaxTimeBinIndex]; // time bin index
- Float_t fTzeroShift; // T0 shift in cm
- Int_t fGeomSector; // sector # in AliTRDgeometry
- };
-
+
+ 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:
-
- friend class AliTRDtracker::AliTRDtrackingSector;
-
- AliTRDgeometry *fGeom; // Pointer to TRD geometry
- AliTRDparameter *fPar; // Pointer to TRD parameter
-
- 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
-
- Float_t fSY2corr; // Correction coefficient for
- // cluster SigmaY2
-
- Float_t fSZ2corr; // Correction coefficient for
- // cluster SigmaZ2
-
- static const Float_t fgkSeedGap; // Distance between inner and outer
- // time bin in seeding
- // (fraction of all time bins)
+ AliTRDReconstructor *fReconstructor; // TRD Reconstructor
+ 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 Float_t fgkSeedStep; // Step in iterations
- static const Float_t fgkSeedDepth; // Fraction of TRD allocated for seeding
- static const Float_t fgkSkipDepth; // Fraction of TRD which can be skipped
- // in track prolongation
- Int_t fTimeBinsPerPlane; // number of sensitive timebins per plane
- Int_t fMaxGap; // max gap (in time bins) in the track
- // in track prolongation
-
- static const Double_t fgkMaxChi2; // max increment in track chi2
-
- static const Float_t fgkMinClustersInTrack; // min number of clusters in track
- // out of total timebins
-
- static const Float_t fgkMinFractionOfFoundClusters; // min found clusters
- // out of expected
+ 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
- static const Float_t fgkMinClustersInSeed; // min fraction of clusters in seed
- static const Float_t fgkMaxSeedDeltaZ; // max dZ in MakeSeeds
- static const Float_t fgkMaxSeedDeltaZ12; // max abs(z1-z2) in MakeSeeds
- static const Float_t fgkMaxSeedC; // max initial curvature in MakeSeeds
- static const Float_t fgkMaxSeedTan; // max initial Tangens(lambda) in MakeSeeds
- static const Float_t fgkMaxSeedVertexZ; // max vertex Z in MakeSeeds
- static const Double_t fgkSeedErrorSY; // sy parameter in MakeSeeds
- static const Double_t fgkSeedErrorSY3; // sy3 parameter in MakeSeeds
- static const Double_t fgkSeedErrorSZ; // sz parameter in MakeSeeds
- static const Float_t fgkLabelFraction; // min fraction of same label
- static const Float_t fgkWideRoad; // max road width in FindProlongation
- //
- static const Double_t fgkDriftCorrection; // correction coeficients for drift velocity
- static const Double_t fgkOffset; // correction coeficients
- static const Double_t fgkOffsetX; // correction coeficients offset in X
- static const Double_t fgkCoef; // correction coeficients
- static const Double_t fgkMean; // correction coeficients
- static const Double_t fgkExB; // correction coeficients
+ protected:
- Bool_t fVocal; // Whatever...
- Bool_t fAddTRDseeds; // Something else
+ 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;
- Bool_t fNoTilt; // No tilt, or what?
- Bool_t fHoles[5][18]; // holes
-
- Bool_t AdjustSector(AliTRDtrack *track);
+ TTreeSRedirector *fDebugStreamer; //!Debug streamer
- // Barrel tracks [SR, 03.04.2003]
-
- static const Int_t fgkFirstPlane; // Id of the first (innermost) reference plane
- static const Int_t fgkLastPlane; // Id of the last (outermost) reference plane
-
- private:
- AliTRDtrack * RegisterSeed(AliTRDseed * seeds, Double_t *params);
- virtual void MakeSeeds(Int_t inner, Int_t outer, Int_t turn);
- void MakeSeedsMI(Int_t inner, Int_t outer, AliESD *esd=0);
-
- Int_t FollowProlongation(AliTRDtrack& t, Int_t rf);
- Int_t FollowProlongationG(AliTRDtrack& t, Int_t rf);
- Int_t FollowBackProlongation(AliTRDtrack& t);
- Int_t FollowBackProlongationG(AliTRDtrack& t);
- Int_t Refit(AliTRDtrack& t, Int_t rf);
- void CookdEdxTimBin(AliTRDtrack& t);
-
- Int_t PropagateToTPC(AliTRDtrack& t);
- Int_t PropagateToOuterPlane(AliTRDtrack& t, Double_t x);
-
- void SetSY2corr(Float_t w) {fSY2corr = w;}
- void SetSZ2corr(Float_t w) {fSZ2corr = w;}
- Double_t ExpectedSigmaY2(Double_t r, Double_t tgl, Double_t pt) const;
- Double_t ExpectedSigmaZ2(Double_t r, Double_t tgl) const;
- TTreeSRedirector *fDebugStreamer; //!debug streamer
- ClassDef(AliTRDtracker,2) // manager base class
-
+ ClassDef(AliTRDtracker, 4) // TRD tracker
+
};
+
#endif
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