[u/mrichter/AliRoot.git] / TRD / AliTRDtracker.h

#ifndef ALITRDTRACKER_H
#define ALITRDTRACKER_H   

/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */ 

#include "AliTracker.h" 
#include "TObjArray.h" 
#include "AliBarrelTrack.h"
#include "AliESD.h"

class TFile;
class TTree;
class TParticle;
class TParticlePDG;

class AliTRDgeometry;
class AliTRDparameter;
class AliTRDtrack;
class AliTRDcluster;
class AliTRDmcTrack;

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 AliTracker { 

 public:

  AliTRDtracker():AliTracker() {} 
  AliTRDtracker(const TFile *in);
  virtual ~AliTRDtracker(); 

  Int_t         Clusters2Tracks(const TFile *in, TFile *out);
  Int_t         Clusters2Tracks(AliESD* event);
  Int_t         PropagateBack(const TFile *in, TFile *out);
  Int_t         PropagateBack(AliESD* event);
  Int_t         RefitInward(AliESD* event);

  Int_t         LoadClusters(TTree *cTree);
  void          UnloadClusters(){UnloadEvent();}
  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);

  void          ReadClusters(TObjArray *array, const Char_t *filename); 
  Int_t         ReadClusters(TObjArray *array, TTree *in);
  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); 

     ~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:     

     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            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) 
  
  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:

  void          LoadEvent();
  void          UnloadEvent();

  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);

  Int_t         WriteTracks(); 
  void          ReadClusters(TObjArray *array, const TFile *in=0);

  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  

};

#endif
Commit	Line	Data
46d29e70	1	#ifndef ALITRDTRACKER_H
	2	#define ALITRDTRACKER_H
	3
	4	/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
	5	* See cxx source for full Copyright notice */
	6
5443e65e	7	#include "AliTracker.h"
e24ea474	8	#include "TObjArray.h"
9c9d2487	9	#include "AliBarrelTrack.h"
c630aafd	10	#include "AliESD.h"
46d29e70	11
46d29e70	12	class TFile;
c630aafd	13	class TTree;
bbf92647	14	class TParticle;
bbf92647	15	class TParticlePDG;
46d29e70	16
46d29e70	17	class AliTRDgeometry;
5443e65e	18	class AliTRDparameter;
46d29e70	19	class AliTRDtrack;
5443e65e	20	class AliTRDcluster;
bbf92647	21	class AliTRDmcTrack;
46d29e70	22
029cd327	23	const unsigned kMaxLayersPerSector = 1000;
	24	const unsigned kMaxTimeBinIndex = 216; // (30 drift + 6 ampl) * 6 planes
	25	const unsigned kMaxClusterPerTimeBin = 7000;
	26	const unsigned kZones = 5;
	27	const Int_t kTrackingSectors = 18;
5443e65e	28
c630aafd	29	class AliTRDtracker : public AliTracker {
46d29e70	30
	31	public:
	32
5443e65e	33	AliTRDtracker():AliTracker() {}
5443e65e	34	AliTRDtracker(const TFile *in);
029cd327	35	virtual ~AliTRDtracker();
5443e65e	36
5443e65e	37	Int_t Clusters2Tracks(const TFile in, TFile out);
c630aafd	38	Int_t Clusters2Tracks(AliESD* event);
5443e65e	39	Int_t PropagateBack(const TFile in, TFile out);
c630aafd	40	Int_t PropagateBack(AliESD* event);
1e9bb598	41	Int_t RefitInward(AliESD* event);
9c9d2487	42
c630aafd	43	Int_t LoadClusters(TTree *cTree);
c630aafd	44	void UnloadClusters(){UnloadEvent();}
029cd327	45	AliCluster *GetCluster(Int_t index) const { if (index >= fNclusters) return NULL;
029cd327	46	return (AliCluster*) fClusters->UncheckedAt(index); };
5443e65e	47	virtual void CookLabel(AliKalmanTrack *t,Float_t wrong) const;
	48	virtual void UseClusters(const AliKalmanTrack *t, Int_t from=0) const;
	49
5443e65e	50	void SetAddTRDseeds() { fAddTRDseeds = kTRUE; }
b8dc2353	51	void SetNoTilt() { fNoTilt = kTRUE; }
5443e65e	52
fd621f36	53	Double_t GetTiltFactor(const AliTRDcluster* c);
fd621f36	54
5443e65e	55	void ReadClusters(TObjArray array, const Char_t filename);
c630aafd	56	Int_t ReadClusters(TObjArray array, TTree in);
029cd327	57	Int_t CookSectorIndex(Int_t gs) const { return kTrackingSectors - 1 - gs; }
46e2d86c	58	AliTRDcluster * GetCluster(AliTRDtrack * track, Int_t plane, Int_t timebin);
3c625a9b	59	Int_t GetLastPlane(AliTRDtrack * track); //return last updated plane
5443e65e	60
029cd327	61	Float_t GetSeedGap() const {return fgkSeedGap;}
5443e65e	62	Int_t GetMaxGap() const {return fMaxGap;}
5443e65e	63	Int_t GetTimeBinsPerPlane() const {return fTimeBinsPerPlane;}
029cd327	64	Float_t GetSeedStep() const {return fgkSeedStep;}
	65	Float_t GetSeedDepth() const {return fgkSeedDepth;}
	66	Float_t GetSkipDepth() const {return fgkSkipDepth;}
	67	Double_t GetMaxChi2() const {return fgkMaxChi2;}
	68	Float_t GetMaxSeedC() const {return fgkMaxSeedC;}
	69	Float_t GetMaxSeedTan() const {return fgkMaxSeedTan;}
	70	Double_t GetSeedErrorSY() const {return fgkSeedErrorSY;}
	71	Double_t GetSeedErrorSY3() const {return fgkSeedErrorSY3;}
	72	Double_t GetSeedErrorSZ() const {return fgkSeedErrorSZ;}
	73	Float_t GetLabelFraction() const {return fgkLabelFraction;}
	74	Float_t GetWideRoad() const {return fgkWideRoad;}
	75
	76	Float_t GetMinClustersInTrack() const {return fgkMinClustersInTrack;}
	77	Float_t GetMinClustersInSeed() const {return fgkMinClustersInSeed;}
	78	Float_t GetMaxSeedDeltaZ() const {return fgkMaxSeedDeltaZ;}
	79	Float_t GetMaxSeedVertexZ() const {return fgkMaxSeedVertexZ;}
5443e65e	80
5443e65e	81	// x <-> timebin conversions useful in analysis macros
029cd327	82	Double_t GetX(Int_t sec, Int_t plane, Int_t localTB) const;
5443e65e	83	Double_t GetX(Int_t sec, Int_t pl) const {
5443e65e	84	return fTrSec[sec]->GetLayer(pl)->GetX(); }
029cd327	85	Int_t GetGlobalTimeBin(Int_t sec, Int_t plane, Int_t localTB) const {
029cd327	86	return fTrSec[sec]->CookTimeBinIndex(plane,localTB); }
5443e65e	87	Double_t GetLayerNumber(Int_t sec, Double_t x) const {
	88	return fTrSec[sec]->GetLayerNumber(x); }
	89
029cd327	90	class AliTRDpropagationLayer {
5443e65e	91	// *************** internal class *****************
	92	public:
	93	AliTRDpropagationLayer(Double_t x, Double_t dx, Double_t rho,
029cd327	94	Double_t x0, Int_t tbIndex);
5443e65e	95
	96	~AliTRDpropagationLayer() {
	97	if(fTimeBinIndex >= 0) { delete[] fClusters; delete[] fIndex; }
	98	}
029cd327	99	void InsertCluster(AliTRDcluster *c, UInt_t index);
5443e65e	100	operator Int_t() const {return fN;}
	101	AliTRDcluster* operator[](Int_t i) {return fClusters[i];}
	102	UInt_t GetIndex(Int_t i) const {return fIndex[i];}
	103	Double_t GetX() const { return fX; }
	104	Double_t GetdX() const { return fdX; }
	105	Double_t GetRho() const { return fRho; }
	106	Double_t GetX0() const { return fX0; }
	107	Int_t GetTimeBinIndex() const { return fTimeBinIndex; }
	108	void GetPropagationParameters(Double_t y, Double_t z,
b8dc2353	109	Double_t &dx, Double_t &rho, Double_t &x0,
5443e65e	110	Bool_t &lookForCluster) const;
3c625a9b	111	Int_t GetZone( Double_t z) const;
5443e65e	112	Int_t Find(Double_t y) const;
	113	void SetZmax(Int_t cham, Double_t center, Double_t w)
	114	{ fZc[cham] = center; fZmax[cham] = w; }
3c625a9b	115	void SetZ(Double_t* center, Double_t w, Double_t wsensitive);
	116	void SetHoles(Bool_t* holes);
	117	void SetYmax(Double_t w, Double_t wsensitive) { fYmax = w; fYmaxSensitive = wsensitive; }
5443e65e	118	Double_t GetYmax() const { return fYmax; }
	119	Double_t GetZmax(Int_t c) const { return fZmax[c]; }
	120	Double_t GetZc(Int_t c) const { return fZc[c]; }
	121
	122	void SetHole(Double_t Zmax, Double_t Ymax,
b8dc2353	123	Double_t rho = 1.29e-3, Double_t x0 = 36.66,
	124	Double_t Yc = 0, Double_t Zc = 0);
	125
029cd327	126	Bool_t IsSensitive() const {return (fTimeBinIndex>=0)? kTRUE: kFALSE;}
9c9d2487	127
5443e65e	128	void Clear() {for(Int_t i=0; i<fN; i++) fClusters[i] = NULL; fN = 0;}
3c625a9b	129	Bool_t IsHole(Int_t zone) const { return fIsHole[zone];}
5443e65e	130	private:
5443e65e	131
029cd327	132	Int_t fN; // this is fN
3c625a9b	133	Int_t fSec; // sector mumber
5443e65e	134	AliTRDcluster **fClusters; // array of pointers to clusters
	135	UInt_t *fIndex; // array of cluster indexes
	136	Double_t fX; // x coordinate of the middle plane
	137	Double_t fdX; // radial thickness of the time bin
	138	Double_t fRho; // default density of the material
	139	Double_t fX0; // default radiation length
	140	Int_t fTimeBinIndex; // plane * F(local_tb)
029cd327	141	Double_t fZc[kZones]; // Z position of the center for 5 active areas
029cd327	142	Double_t fZmax[kZones]; // half of active area length in Z
3c625a9b	143	Double_t fZmaxSensitive[kZones]; //sensitive area for detection Z
3c625a9b	144	Bool_t fIsHole[kZones]; //is hole in given sector
5443e65e	145	Double_t fYmax; // half of active area length in Y
3c625a9b	146	Double_t fYmaxSensitive; // half of active area length in Y
5443e65e	147
	148	Bool_t fHole; // kTRUE if there is a hole in the layer
	149	Double_t fHoleZc; // Z of the center of the hole
	150	Double_t fHoleZmax; // half of the hole length in Z
	151	Double_t fHoleYc; // Y of the center of the hole
	152	Double_t fHoleYmax; // half of the hole length in Y
	153	Double_t fHoleRho; // density of the gas in the hole
	154	Double_t fHoleX0; // radiation length of the gas in the hole
	155	};
	156
	157	class AliTRDtrackingSector {
	158	public:
	159	AliTRDtrackingSector(AliTRDgeometry* geo, Int_t gs, AliTRDparameter* par);
	160	~AliTRDtrackingSector() { for(Int_t i=0; i<fN; i++) delete fLayers[i]; }
	161	Int_t GetNumberOfLayers() const { return fN; }
	162	Int_t GetNumberOfTimeBins() const;
	163	Double_t GetX(Int_t pl) const { return fLayers[pl]->GetX(); }
	164	void MapTimeBinLayers();
	165	Int_t GetLayerNumber(Double_t x) const;
	166	Int_t GetInnerTimeBin() const;
	167	Int_t GetOuterTimeBin() const;
	168	Int_t GetLayerNumber(Int_t tb) const {return fTimeBinIndex[tb];}
	169	Float_t GetTzeroShift() const { return fTzeroShift; }
	170	Int_t Find(Double_t x) const;
	171	void InsertLayer(AliTRDpropagationLayer* pl);
	172	// AliTRDpropagationLayer* operator[](Int_t i) { return fLayers[i]; }
	173	AliTRDpropagationLayer* GetLayer(Int_t i) { return fLayers[i]; }
029cd327	174	Int_t CookTimeBinIndex(Int_t plane, Int_t localTB) const;
5443e65e	175
	176	private:
	177	Int_t fN; // total number of layers
029cd327	178	AliTRDgeometry *fGeom; // geometry
	179	AliTRDparameter *fPar; // parameter
	180	AliTRDpropagationLayer *fLayers[kMaxLayersPerSector]; // layers
	181	Int_t fTimeBinIndex[kMaxTimeBinIndex]; // time bin index
5443e65e	182	Float_t fTzeroShift; // T0 shift in cm
	183	Int_t fGeomSector; // sector # in AliTRDgeometry
	184	};
	185
46d29e70	186	protected:
46d29e70	187
5443e65e	188	AliTRDgeometry *fGeom; // Pointer to TRD geometry
029cd327	189	AliTRDparameter *fPar; // Pointer to TRD parameter
bbf92647	190
029cd327	191	AliTRDtrackingSector *fTrSec[kTrackingSectors]; // array of tracking sectors;
46d29e70	192	Int_t fNclusters; // Number of clusters in TRD
	193	TObjArray *fClusters; // List of clusters for all sectors
	194
	195	Int_t fNseeds; // Number of track seeds
	196	TObjArray *fSeeds; // List of track seeds
	197
	198	Int_t fNtracks; // Number of reconstructed tracks
	199	TObjArray *fTracks; // List of reconstructed tracks
	200
a819a5f7	201	Float_t fSY2corr; // Correction coefficient for
	202	// cluster SigmaY2
	203
5443e65e	204	Float_t fSZ2corr; // Correction coefficient for
	205	// cluster SigmaZ2
	206
029cd327	207	static const Float_t fgkSeedGap; // Distance between inner and outer
0a29d0f1	208	// time bin in seeding
b8dc2353	209	// (fraction of all time bins)
bbf92647	210
029cd327	211	static const Float_t fgkSeedStep; // Step in iterations
	212	static const Float_t fgkSeedDepth; // Fraction of TRD allocated for seeding
	213	static const Float_t fgkSkipDepth; // Fraction of TRD which can be skipped
c630aafd	214	// in track prolongation
5443e65e	215	Int_t fTimeBinsPerPlane; // number of sensitive timebins per plane
5443e65e	216	Int_t fMaxGap; // max gap (in time bins) in the track
c630aafd	217	// in track prolongation
5443e65e	218
029cd327	219	static const Double_t fgkMaxChi2; // max increment in track chi2
c630aafd	220
029cd327	221	static const Float_t fgkMinClustersInTrack; // min number of clusters in track
	222	// out of total timebins
	223
	224	static const Float_t fgkMinFractionOfFoundClusters; // min found clusters
	225	// out of expected
	226
	227	static const Float_t fgkMinClustersInSeed; // min fraction of clusters in seed
	228	static const Float_t fgkMaxSeedDeltaZ; // max dZ in MakeSeeds
	229	static const Float_t fgkMaxSeedDeltaZ12; // max abs(z1-z2) in MakeSeeds
	230	static const Float_t fgkMaxSeedC; // max initial curvature in MakeSeeds
	231	static const Float_t fgkMaxSeedTan; // max initial Tangens(lambda) in MakeSeeds
	232	static const Float_t fgkMaxSeedVertexZ; // max vertex Z in MakeSeeds
	233	static const Double_t fgkSeedErrorSY; // sy parameter in MakeSeeds
	234	static const Double_t fgkSeedErrorSY3; // sy3 parameter in MakeSeeds
	235	static const Double_t fgkSeedErrorSZ; // sz parameter in MakeSeeds
	236	static const Float_t fgkLabelFraction; // min fraction of same label
	237	static const Float_t fgkWideRoad; // max road width in FindProlongation
	238
	239	Bool_t fVocal; // Whatever...
	240	Bool_t fAddTRDseeds; // Something else
	241
	242	Bool_t fNoTilt; // No tilt, or what?
3c625a9b	243	Bool_t fHoles[5][18]; // holes
9c9d2487	244
	245	Bool_t AdjustSector(AliTRDtrack *track);
	246
	247
	248	// Barrel tracks [SR, 03.04.2003]
	249
029cd327	250	static const Int_t fgkFirstPlane; // Id of the first (innermost) reference plane
029cd327	251	static const Int_t fgkLastPlane; // Id of the last (outermost) reference plane
9c9d2487	252
	253	void SetBarrelTree(const char *mode);
	254	void StoreBarrelTrack(AliTRDtrack *ps, Int_t refPlane, Int_t isIn);
	255
029cd327	256	TFile *fBarrelFile; // Some kind of barrel file
	257	TTree *fBarrelTree; // And a barrel tree
	258	TClonesArray *fBarrelArray; // Wow, there even an array for that barrel
	259	AliBarrelTrack *fBarrelTrack; // And, finally, the track
	260
	261	private:
	262
	263	void LoadEvent();
	264	void UnloadEvent();
	265
	266	virtual void MakeSeeds(Int_t inner, Int_t outer, Int_t turn);
	267
	268	Int_t FollowProlongation(AliTRDtrack& t, Int_t rf);
	269	Int_t FollowBackProlongation(AliTRDtrack& t);
1e9bb598	270	Int_t Refit(AliTRDtrack& t, Int_t rf);
029cd327	271
	272	Int_t PropagateToTPC(AliTRDtrack& t);
	273	Int_t PropagateToOuterPlane(AliTRDtrack& t, Double_t x);
9c9d2487	274
029cd327	275	Int_t WriteTracks();
	276	void ReadClusters(TObjArray array, const TFile in=0);
	277
	278	void SetSY2corr(Float_t w) {fSY2corr = w;}
	279	void SetSZ2corr(Float_t w) {fSZ2corr = w;}
	280	Double_t ExpectedSigmaY2(Double_t r, Double_t tgl, Double_t pt) const;
	281	Double_t ExpectedSigmaZ2(Double_t r, Double_t tgl) const;
9c9d2487	282
46d29e70	283	ClassDef(AliTRDtracker,1) // manager base class
	284
	285	};
	286
	287	#endif