X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=TRD%2FAliTRDtracker.h;h=89a0fba69c2d075264b4836b7bac15f35e8dfc5f;hb=2ed19889577edad1ad764a222d7f351ef6014034;hp=6caf38a6d40ff8d67e55af01a963d85f443c3d16;hpb=bbf926473b6e3ee93c52904d962b06e6f428bc81;p=u%2Fmrichter%2FAliRoot.git diff --git a/TRD/AliTRDtracker.h b/TRD/AliTRDtracker.h index 6caf38a6d40..89a0fba69c2 100644 --- a/TRD/AliTRDtracker.h +++ b/TRD/AliTRDtracker.h @@ -4,80 +4,274 @@ /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * * See cxx source for full Copyright notice */ -#include +/* $Id$ */ + +//////////////////////////////////////////////////////////////////////////// +// // +// The TRD tracker // +// // +//////////////////////////////////////////////////////////////////////////// + +#include "AliTracker.h" +#include "TObjArray.h" class TFile; +class TTree; +class TH1D; +class TH2D; class TParticle; class TParticlePDG; -class TObjArray; class AliTRDgeometry; -// class AliTRDtrackingSector; class AliTRDtrack; -class AliTRDmcTrack; +class AliTRDtracklet; +class AliTRDcluster; +class AliTRDseed; +class AliESDEvent; +class TTreeSRedirector; + +/////////////////////////////////////////////////////////////////////////////// +// // +// The standard TRD tracker // +// Based on Kalman filltering approach // +// // +/////////////////////////////////////////////////////////////////////////////// + +class AliTRDtracker : public AliTracker { + // Histograms + TH1D *fHBackfit; // Histogram for back propagation + TH1D *fHClSearch; // Cluster search + TH1D *fHRefit; + + TH1D *fHX; + TH1D *fHNCl; + TH1D *fHNClTrack; + TH1D *fHFindCl[4]; + TH1D *fHMinYPos; + TH1D *fHMinYNeg; + TH1D *fHMinZ; + + TH2D *fHMinD; + TH1D *fHDeltaX; -class AliTRDtracker : public TNamed { + TH1D *fHXCl; + + void InitLogHists(); + void SaveLogHists(); public: + enum { kMaxLayersPerSector = 1000 + , kMaxTimeBinIndex = 216 + , kMaxClusterPerTimeBin = 2300 + , kZones = 5 + , kTrackingSectors = 18 }; + 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 AliTRDtracker &t); + AliTRDtracker(const TFile *in); + virtual ~AliTRDtracker(); + AliTRDtracker &operator=(const AliTRDtracker &/*t*/) { return *this; } + + 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); + 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); + Bool_t Transform(AliTRDcluster *cluster); + + 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: + + class AliTRDpropagationLayer { + + public: + + AliTRDpropagationLayer(Double_t x, Double_t dx, Double_t rho + , Double_t x0, Int_t tbIndex, Int_t plane); + AliTRDpropagationLayer(const AliTRDpropagationLayer &/*p*/); + ~AliTRDpropagationLayer() { + if (fTimeBinIndex >= 0) { + delete[] fClusters; + delete[] fIndex; + } + } + AliTRDpropagationLayer &operator=(const AliTRDpropagationLayer &/*p*/) + {return *this;} - Int_t fEvent; // Event number - - AliTRDgeometry *fGeom; // Pointer to TRD geometry - - 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 - - static const Int_t fSeedGap; // Distance between inner and outer - // time bin in seeding - - 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 - - ClassDef(AliTRDtracker,1) // manager base class + operator Int_t() const {return fN;} + AliTRDcluster *operator[](Int_t i) {return fClusters[i];} + + void SetZmax(Int_t cham, Double_t center, Double_t w) { + fZc[cham] = center; + fZmax[cham] = w; + } + void SetYmax(Double_t w, Double_t wsensitive) { + fYmax = w; + fYmaxSensitive = wsensitive; + } -}; + void SetZ(Double_t* center, Double_t *w, Double_t *wsensitive); + void SetHoles(Bool_t* holes); + void SetHole(Double_t Zmax, Double_t Ymax + , Double_t rho = 1.29e-3, Double_t x0 = 36.66 + , Double_t Yc = 0.0, Double_t Zc = 0.0); + + 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]; } + UInt_t GetIndex(Int_t i) const { return fIndex[i]; } + Double_t GetX() const { return fX; } + Double_t GetdX() const { return fdX; } + Int_t GetTimeBinIndex() const { return fTimeBinIndex; } + Int_t GetPlane() const { return fPlane; } + Bool_t IsHole(Int_t zone) const { return fIsHole[zone]; } + Bool_t IsSensitive() const { return (fTimeBinIndex >= 0)? kTRUE : kFALSE;} + + void Clear() { + for (Int_t i = 0; i < fN; i++) fClusters[i] = NULL; + fN = 0; + } + + void InsertCluster(AliTRDcluster *c, UInt_t index); + Int_t Find(Float_t y) const; + Int_t FindNearestCluster(Float_t y, Float_t z, Float_t maxroad, Float_t maxroadz) const; + + void SetX(Double_t x) {fX = x;} + + 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) + Int_t fPlane; // Plane number + 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); + AliTRDtrackingSector(const AliTRDtrackingSector &/*t*/); + ~AliTRDtrackingSector() { + for (Int_t i = 0; i < fN; i++) delete fLayers[i]; + } + + 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];} + + 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 + + }; + + 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? + Bool_t fHoles[5][18]; // Holes + + Bool_t AdjustSector(AliTRDtrack *track); + + private: + + AliTRDtrack *RegisterSeed(AliTRDseed *seeds, Double_t *params); + void MakeSeedsMI(Int_t inner, Int_t outer, AliESDEvent *esd = 0); + + Int_t FollowBackProlongation(AliTRDtrack &t); + 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; + + TTreeSRedirector *fDebugStreamer; //!Debug streamer + + ClassDef(AliTRDtracker,2) // TRD tracker + + }; #endif