/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
* See cxx source for full Copyright notice */
-#include <TNamed.h>
+#include "AliTracker.h"
+#include "TObjArray.h"
class TFile;
+class TTree;
class TParticle;
class TParticlePDG;
-class TObjArray;
class AliTRDgeometry;
-// class AliTRDtrackingSector;
+class AliTRDparameter;
class AliTRDtrack;
-class AliTRDmcTrack;
+class AliTRDcluster;
+class AliBarrelTrack;
+class AliESD;
+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 AliTRDtracker : public TNamed {
+class AliTRDtracker : public AliTracker {
public:
AliTRDtracker();
- AliTRDtracker(const Text_t* name, const Text_t* title);
- ~AliTRDtracker();
-
- virtual void Clusters2Tracks();
- 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);
- void GetEvent(const Char_t *hitfile, const Char_t *clusterfile);
- void SetUpSectors(AliTRDtrackingSector *sec);
- virtual void MakeSeeds(Int_t inner, Int_t outer);
- virtual void FindTracks();
- 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,
- Int_t option = 1);
+ AliTRDtracker(const TFile *in);
+ virtual ~AliTRDtracker();
- protected:
+ Int_t Clusters2Tracks(AliESD* event);
+ Int_t PropagateBack(AliESD* event);
+ Int_t RefitInward(AliESD* event);
+
+ Int_t LoadClusters(TTree *cTree);
+ void UnloadClusters();
+ AliCluster *GetCluster(Int_t index) const { if (index >= fNclusters) return NULL;
+ return (AliCluster*) fClusters->UncheckedAt(index); };
+ virtual void CookLabel(AliKalmanTrack *t,Float_t wrong) const;
+ virtual void UseClusters(const AliKalmanTrack *t, Int_t from=0) const;
+
+ 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);
+ Int_t GetLastPlane(AliTRDtrack * track); //return last updated plane
+
+ 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);
- Int_t fEvent; // Event number
+ ~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; }
+ void 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(Double_t y) 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:
- AliTRDgeometry *fGeom; // Pointer to TRD geometry
+ 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
+ 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
+ };
+
+ 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;
+
+ 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
+ };
+
+ protected:
+
+ 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 fNtracks; // Number of reconstructed tracks
TObjArray *fTracks; // List of reconstructed tracks
- static const Int_t fSeedGap; // Distance between inner and outer
- // time bin in seeding
+ 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)
- static const Int_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 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
+ 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 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
+
+ Bool_t fVocal; // Whatever...
+ Bool_t fAddTRDseeds; // Something else
+
+ Bool_t fNoTilt; // No tilt, or what?
+ Bool_t fHoles[5][18]; // holes
+
+ Bool_t AdjustSector(AliTRDtrack *track);
+
+ // 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
+
+ void SetBarrelTree(const char *mode);
+ void StoreBarrelTrack(AliTRDtrack *ps, Int_t refPlane, Int_t isIn);
+
+ TFile *fBarrelFile; // Some kind of barrel file
+ TTree *fBarrelTree; // And a barrel tree
+ TClonesArray *fBarrelArray; // Wow, there even an array for that barrel
+ AliBarrelTrack *fBarrelTrack; // And, finally, the track
+
+ private:
+
+ virtual void MakeSeeds(Int_t inner, Int_t outer, Int_t turn);
+
+ Int_t FollowProlongation(AliTRDtrack& t, Int_t rf);
+ Int_t FollowBackProlongation(AliTRDtrack& t);
+ Int_t Refit(AliTRDtrack& t, Int_t rf);
+
+ 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;
+
ClassDef(AliTRDtracker,1) // manager base class
};
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