[u/mrichter/AliRoot.git] / TPC / AliTPC.h

#ifndef TPC_H
#define TPC_H
////////////////////////////////////////////////
//  Manager class for TPC                     //
////////////////////////////////////////////////

#include "AliDetector.h"
#include "AliHit.h" 
#include "AliDigit.h" 
#include "AliTPCSecGeo.h" 
#include "AliTPCParam.h"
#include <TMatrix.h>
#include <TTree.h>
#include <TClonesArray.h>

#define MAXTPCTBK 500

class AliTPCcluster;
class AliTPCtrack;
class AliTPCParam;
//MI changes
class AliTPCD;

class AliTPC : public AliDetector {
protected:
  Int_t          fSens;             // ISENS
  Int_t          fSecAL;            // Upper sector selector
  Int_t          fSecAU;            // Lower sector selector
  Int_t          fSecLows[6];       // List of lower sectors selected
  Int_t          fSecUps[12];       // List of upper sectors selected
  Int_t          fNsectors;         // Number of sectors in TPC
  Int_t          fNclusters;        // Number of clusters in TPC
  Int_t          fNtracks;          // Number of tracks in TPC
  Int_t          *fClustersIndex;   // Index for each sector in fClusters
  Int_t          *fDigitsIndex;     // Index for each sector in fDigits
  TClonesArray   *fClusters;        // List of clusters for all sectors
  TClonesArray   *fTracks;          // List of reconstructed tracks
  //MI changes
  AliTPCD * fDigParam;              //detector parameters  
public:
  AliTPC();
  AliTPC(const char *name, const char *title);
  virtual      ~AliTPC();
  virtual void  AddCluster(Float_t*, Int_t*);
  /*virtual*/void  AddCluster(const AliTPCcluster&);
  virtual void  AddDigit(Int_t*, Int_t*);
  virtual void  AddHit(Int_t, Int_t*, Float_t*);
  virtual void  AddTrack(Float_t*);
  /*virtual*/void  AddTrack(const AliTPCtrack&);
  Int_t         DistancetoPrimitive(Int_t px, Int_t py);
  virtual void  BuildGeometry();
  virtual void  CreateGeometry() {}
  virtual void  CreateMaterials();
  virtual void  Hits2Clusters();

  virtual void  Hits2Digits();   //MI change
  virtual void Hits2DigitsSector(Int_t isec);  //MI change
  virtual void  Init();
  virtual Int_t IsVersion() const =0;
  virtual void  Digits2Clusters();
  virtual void  Clusters2Tracks();
  TClonesArray  *Clusters() {return fClusters;}
  TClonesArray  *Tracks()   {return fTracks;}
  Int_t         *GetClustersIndex() {return fClustersIndex;}
  Int_t         *GetDigitsIndex()   {return fDigitsIndex;}
  Int_t         GetNsectors()       {return fNsectors;}
  virtual void  MakeBranch(Option_t *opt=" ");
  virtual void  ResetDigits();
  virtual void  SetSecAL(Int_t sec);
  virtual void  SetSecAU(Int_t sec);
  virtual void  SetSecLows(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6);
  virtual void  SetSecUps (Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6,
			   Int_t s7,Int_t s8,Int_t s9,Int_t s10, Int_t s11, Int_t s12);
  virtual void  SetSens(Int_t sens);
  virtual void  StepManager()=0;
  virtual void  DrawDetector() {}
  AliTPCD*  GetDigParam() {return fDigParam;} //MI change8
  void SetDigParam(AliTPCD* param) {fDigParam=param;}  //MI must think about it
private:
  //
  void ElDiff(Float_t *xyz);
  void MakeTriplet(Int_t row,TObjArray **rowTriplet, 
                   TObjArray **prow);

  void ExB(Float_t *xyz);
  void DigitizeRow(Int_t irow,Int_t isec,TObjArray **rowTriplet);
  Float_t GetSignal(TObjArray *p1, Int_t ntr, Int_t np, TMatrix *m1, TMatrix *m2,
                    Int_t *IndexRange);
  void GetList (Float_t label,Int_t np,TMatrix *m,Int_t *IndexRange,
                Float_t **pList);
  void MakeSector(Int_t isec,Int_t nrows,TTree *TH,Stat_t ntracks,TObjArray **row);
  void GetCrossTalk (Int_t iFlag,TObjArray *p,Int_t ntracks,Int_t *npads,
                     TMatrix *m);

  
  ClassDef(AliTPC,2)  // Time Projection Chamber class
};

//_____________________________________________________________________________

class AliTPCcluster : public TObject {
public:
  Int_t     fTracks[3];//labels of overlapped tracks
  Int_t     fSector;   //sector number
  Int_t     fPadRow;   //PadRow number
  Float_t   fY ;       //Y of cluster
  Float_t   fZ ;       //Z of cluster
  Float_t   fQ ;       //Q of cluster (in ADC counts)
  Float_t   fSigmaY2;  //Sigma Y square of cluster
  Float_t   fSigmaZ2;  //Sigma Z square of cluster
  
public:
  AliTPCcluster() {
    fTracks[0]=fTracks[1]=fTracks[2]=0; 
    fSector=fPadRow=0;
    fY=fZ=fQ=fSigmaY2=fSigmaZ2=0.;
  }
  AliTPCcluster(Float_t *hits, Int_t*);
  virtual ~AliTPCcluster() {;}
  void Use() {fTracks[0]=-fTracks[0];}
  int IsUsed() const {return (fTracks[0]<0) ? 1 : 0;}
  void GetXYZ(Float_t *x, const AliTPCParam *) const; //Get global x,y,z
  Bool_t    IsSortable() const;
  Int_t Compare(TObject *o) ;
  ClassDef(AliTPCcluster,1)  // Time Projection Chamber clusters
};


//_____________________________________________________________________________

class AliTPCdigit : public AliDigit {
public:
   Int_t     fSector;     //array of volumes
   Int_t     fPadRow;     //Row number
   Int_t     fPad ;       //Pad number
   Int_t     fTime;       //Time bucket
   Int_t     fSignal;     //Signal amplitude
 
public:
   AliTPCdigit() {}
   AliTPCdigit(Int_t *tracks, Int_t *digits);
   virtual ~AliTPCdigit() {}
 
   ClassDef(AliTPCdigit,1)  // Time Projection Chamber digits
};
 
 
//_____________________________________________________________________________
 
class AliTPChit : public AliHit {
public:
   Int_t     fSector;     //sector number
   Int_t     fPadRow;     //Pad Row number
   Float_t   fQ ;         //charge
 
public:
   AliTPChit() {}
   AliTPChit(Int_t shunt, Int_t track, Int_t *vol, Float_t *hits);
   virtual ~AliTPChit() {}
 
   ClassDef(AliTPChit,1)  // Time Projection Chamber hits
};
 
 
//_____________________________________________________________________________
 
const unsigned MAX_CLUSTER_PER_ROW=1500;
const Double_t FIELD=0.2;

class AliTPCtrack : public TObject {
   Double_t fAlpha;          // rotation angle
   Double_t ref;             // track reference plane (X-coordinate)
   TVector x;                // vector of track parameters
   TMatrix C;                // covariance matrix of track parameters
   TObjArray clusters;       // pointers to clusters belonging to this track
   Double_t chi2;            // total chi2 value for this track
public:
   AliTPCtrack(Float_t *hits);
   AliTPCtrack(const AliTPCcluster& c, const TVector& xx, const TMatrix& CC,
               const AliTPCParam *); 
   AliTPCtrack(const AliTPCtrack& t);
   int PropagateTo(Double_t x,
                    Double_t x0=28.94,Double_t rho=0.9e-3,Double_t pm=0.139);
   void PropagateToVertex(
                    Double_t x0=36.66,Double_t rho=1.2e-3,Double_t pm=0.139);
   void Update(const AliTPCcluster* c, Double_t chi2);
   int Rotate(Double_t angle);

   void UseClusters() const ;
   Double_t GetPredictedChi2(const AliTPCcluster*) const ;
   Double_t GetX() const {return ref;}
   Double_t GetY() const {return x(0);}
   Double_t GetC() const {return x(2);}
   Double_t GetY(Double_t x) const;
   Double_t GetZ() const {return x(1);}
   Double_t GetTgl() const {return x(4);}
   Double_t GetPt() const {return 0.3*FIELD/x(2)/100;}
   int GetLab() const ;
   Double_t GetSigmaY2() const {return C(0,0);}
   Double_t GetSigmaZ2() const {return C(1,1);}
   Double_t GetSigmaC2() const {return C(2,2);}
   Double_t GetSigmaTgl2() const {return C(4,4);}
   Double_t GetAlpha() const {return fAlpha;}
   Double_t GetChi2() const {return chi2;}
   operator int() const {return clusters.GetEntriesFast();}
   AliTPCcluster& operator[](int i) {
      return *((AliTPCcluster*)clusters.UncheckedAt(i));
   } 
   void GetPxPyPz(Double_t&, Double_t&, Double_t&) const ;
   void GetXYZ(Double_t& X,Double_t& Y,Double_t& Z) const {X=ref;Y=x(0);Z=x(1);}
 
   ClassDef(AliTPCtrack,1)  // Time Projection Chamber reconstructed tracks
};

//_____Classes for internal tracking use ______________________________________

class TrackSeed : public AliTPCtrack {
public:
   TrackSeed(const AliTPCcluster& c, const TVector& x, const TMatrix& C,
   const AliTPCParam *p) : AliTPCtrack(c,x,C,p) {}
   Bool_t IsSortable() const {return kTRUE;}
   Int_t Compare(TObject *o) {
      AliTPCtrack *t=(AliTPCtrack*)o;
      Double_t c =GetSigmaY2();
      Double_t co=t->GetSigmaY2();
      if (c>co) return 1;
      else if (c<co) return -1;
      return 0;
   }
};

class AliTPCRow {
   unsigned num_of_clusters;
   const AliTPCcluster *clusters[MAX_CLUSTER_PER_ROW];
public:
   AliTPCRow() {num_of_clusters=0;}
   void InsertCluster(const AliTPCcluster*);

   operator int() const {return num_of_clusters;}
   const AliTPCcluster* operator[](int i) const {return clusters[i];}
   int Find(Double_t y) const; 
};


class AliTPCSector {
protected:
   unsigned num_of_rows; 
   AliTPCRow *row;
   const AliTPCParam *param; 
public:
   AliTPCSector() { 
      row = 0; num_of_rows=0;
      param=0;
   }
   virtual void SetUp(AliTPCParam *p) {param=p;}
   virtual ~AliTPCSector() { delete[] row; }
   AliTPCRow& operator[](int i) const { return *(row+i); }
   virtual Double_t GetX(int l) const = 0;
   virtual Double_t GetMaxY(int l) const = 0;
   virtual Double_t GetAlpha() const = 0;
};

class AliTPCSSector : public AliTPCSector {
public:
   AliTPCSSector(){}
   virtual ~AliTPCSSector() {}
   virtual void SetUp(AliTPCParam *p) {
      param=p;
      num_of_rows=p->GetNRowLow();
      row=new AliTPCRow[num_of_rows];
   }
   Double_t GetX(int l) const { return param->GetPadRowRadiiLow(l); }
   Double_t GetAlpha() const {return alpha_low;}
   Double_t GetMaxY(int l) const { return GetX(l)*tan(0.5*GetAlpha()); }
};

class AliTPCLSector : public AliTPCSector {
public:
   AliTPCLSector(){}
   virtual ~AliTPCLSector() {}
   virtual void SetUp(AliTPCParam *p) {
      param=p;
      num_of_rows=p->GetNRowUp();
      row=new AliTPCRow[num_of_rows];
   }
   Double_t GetX(int l) const { return param->GetPadRowRadiiUp(l); }
   Double_t GetAlpha() const {return alpha_up;}
   Double_t GetMaxY(int l) const { return GetX(l)*tan(0.5*GetAlpha()); }
};


#endif
Commit	Line	Data
fe4da5cc	1	#ifndef TPC_H
	2	#define TPC_H
	3	////////////////////////////////////////////////
	4	// Manager class for TPC //
	5	////////////////////////////////////////////////
	6
	7	#include "AliDetector.h"
	8	#include "AliHit.h"
	9	#include "AliDigit.h"
	10	#include "AliTPCSecGeo.h"
8c555625	11	#include "AliTPCParam.h"
fe4da5cc	12	#include <TMatrix.h>
8c555625	13	#include <TTree.h>
8c555625	14	#include <TClonesArray.h>
fe4da5cc	15
	16	#define MAXTPCTBK 500
	17
	18	class AliTPCcluster;
	19	class AliTPCtrack;
8c555625	20	class AliTPCParam;
	21	//MI changes
	22	class AliTPCD;
fe4da5cc	23
	24	class AliTPC : public AliDetector {
	25	protected:
	26	Int_t fSens; // ISENS
	27	Int_t fSecAL; // Upper sector selector
	28	Int_t fSecAU; // Lower sector selector
	29	Int_t fSecLows[6]; // List of lower sectors selected
	30	Int_t fSecUps[12]; // List of upper sectors selected
	31	Int_t fNsectors; // Number of sectors in TPC
	32	Int_t fNclusters; // Number of clusters in TPC
	33	Int_t fNtracks; // Number of tracks in TPC
	34	Int_t *fClustersIndex; // Index for each sector in fClusters
	35	Int_t *fDigitsIndex; // Index for each sector in fDigits
	36	TClonesArray *fClusters; // List of clusters for all sectors
	37	TClonesArray *fTracks; // List of reconstructed tracks
8c555625	38	//MI changes
8c555625	39	AliTPCD * fDigParam; //detector parameters
fe4da5cc	40	public:
	41	AliTPC();
	42	AliTPC(const char name, const char title);
	43	virtual ~AliTPC();
	44	virtual void AddCluster(Float_t, Int_t);
	45	/virtual/void AddCluster(const AliTPCcluster&);
	46	virtual void AddDigit(Int_t, Int_t);
	47	virtual void AddHit(Int_t, Int_t, Float_t);
	48	virtual void AddTrack(Float_t*);
	49	/virtual/void AddTrack(const AliTPCtrack&);
	50	Int_t DistancetoPrimitive(Int_t px, Int_t py);
	51	virtual void BuildGeometry();
	52	virtual void CreateGeometry() {}
	53	virtual void CreateMaterials();
	54	virtual void Hits2Clusters();
8c555625	55
	56	virtual void Hits2Digits(); //MI change
	57	virtual void Hits2DigitsSector(Int_t isec); //MI change
fe4da5cc	58	virtual void Init();
	59	virtual Int_t IsVersion() const =0;
	60	virtual void Digits2Clusters();
	61	virtual void Clusters2Tracks();
	62	TClonesArray *Clusters() {return fClusters;}
	63	TClonesArray *Tracks() {return fTracks;}
	64	Int_t *GetClustersIndex() {return fClustersIndex;}
	65	Int_t *GetDigitsIndex() {return fDigitsIndex;}
	66	Int_t GetNsectors() {return fNsectors;}
	67	virtual void MakeBranch(Option_t *opt=" ");
	68	virtual void ResetDigits();
	69	virtual void SetSecAL(Int_t sec);
	70	virtual void SetSecAU(Int_t sec);
	71	virtual void SetSecLows(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6);
	72	virtual void SetSecUps (Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6,
	73	Int_t s7,Int_t s8,Int_t s9,Int_t s10, Int_t s11, Int_t s12);
	74	virtual void SetSens(Int_t sens);
	75	virtual void StepManager()=0;
8c555625	76	virtual void DrawDetector() {}
	77	AliTPCD* GetDigParam() {return fDigParam;} //MI change8
	78	void SetDigParam(AliTPCD* param) {fDigParam=param;} //MI must think about it
fe4da5cc	79	private:
fe4da5cc	80	//
8c555625	81	void ElDiff(Float_t *xyz);
	82	void MakeTriplet(Int_t row,TObjArray **rowTriplet,
	83	TObjArray **prow);
fe4da5cc	84
8c555625	85	void ExB(Float_t *xyz);
	86	void DigitizeRow(Int_t irow,Int_t isec,TObjArray **rowTriplet);
	87	Float_t GetSignal(TObjArray p1, Int_t ntr, Int_t np, TMatrix m1, TMatrix *m2,
	88	Int_t *IndexRange);
	89	void GetList (Float_t label,Int_t np,TMatrix m,Int_t IndexRange,
	90	Float_t **pList);
	91	void MakeSector(Int_t isec,Int_t nrows,TTree TH,Stat_t ntracks,TObjArray *row);
	92	void GetCrossTalk (Int_t iFlag,TObjArray p,Int_t ntracks,Int_t npads,
	93	TMatrix *m);
fe4da5cc	94
fe4da5cc	95
	96	ClassDef(AliTPC,2) // Time Projection Chamber class
	97	};
	98
	99	//_____________________________________________________________________________
	100
	101	class AliTPCcluster : public TObject {
	102	public:
	103	Int_t fTracks[3];//labels of overlapped tracks
	104	Int_t fSector; //sector number
	105	Int_t fPadRow; //PadRow number
	106	Float_t fY ; //Y of cluster
	107	Float_t fZ ; //Z of cluster
	108	Float_t fQ ; //Q of cluster (in ADC counts)
	109	Float_t fSigmaY2; //Sigma Y square of cluster
	110	Float_t fSigmaZ2; //Sigma Z square of cluster
	111
	112	public:
	113	AliTPCcluster() {
	114	fTracks[0]=fTracks[1]=fTracks[2]=0;
	115	fSector=fPadRow=0;
	116	fY=fZ=fQ=fSigmaY2=fSigmaZ2=0.;
	117	}
	118	AliTPCcluster(Float_t hits, Int_t);
	119	virtual ~AliTPCcluster() {;}
	120	void Use() {fTracks[0]=-fTracks[0];}
	121	int IsUsed() const {return (fTracks[0]<0) ? 1 : 0;}
8c555625	122	void GetXYZ(Float_t x, const AliTPCParam ) const; //Get global x,y,z
	123	Bool_t IsSortable() const;
	124	Int_t Compare(TObject *o) ;
fe4da5cc	125	ClassDef(AliTPCcluster,1) // Time Projection Chamber clusters
	126	};
	127
	128
	129	//_____________________________________________________________________________
	130
	131	class AliTPCdigit : public AliDigit {
	132	public:
	133	Int_t fSector; //array of volumes
	134	Int_t fPadRow; //Row number
	135	Int_t fPad ; //Pad number
	136	Int_t fTime; //Time bucket
	137	Int_t fSignal; //Signal amplitude
	138
	139	public:
	140	AliTPCdigit() {}
	141	AliTPCdigit(Int_t tracks, Int_t digits);
	142	virtual ~AliTPCdigit() {}
	143
	144	ClassDef(AliTPCdigit,1) // Time Projection Chamber digits
	145	};
	146
	147
	148	//_____________________________________________________________________________
	149
	150	class AliTPChit : public AliHit {
	151	public:
	152	Int_t fSector; //sector number
	153	Int_t fPadRow; //Pad Row number
	154	Float_t fQ ; //charge
	155
	156	public:
	157	AliTPChit() {}
	158	AliTPChit(Int_t shunt, Int_t track, Int_t vol, Float_t hits);
	159	virtual ~AliTPChit() {}
	160
	161	ClassDef(AliTPChit,1) // Time Projection Chamber hits
	162	};
	163
	164
	165	//_____________________________________________________________________________
	166
8c555625	167	const unsigned MAX_CLUSTER_PER_ROW=1500;
fe4da5cc	168	const Double_t FIELD=0.2;
	169
	170	class AliTPCtrack : public TObject {
	171	Double_t fAlpha; // rotation angle
	172	Double_t ref; // track reference plane (X-coordinate)
	173	TVector x; // vector of track parameters
	174	TMatrix C; // covariance matrix of track parameters
	175	TObjArray clusters; // pointers to clusters belonging to this track
	176	Double_t chi2; // total chi2 value for this track
	177	public:
	178	AliTPCtrack(Float_t *hits);
8c555625	179	AliTPCtrack(const AliTPCcluster& c, const TVector& xx, const TMatrix& CC,
8c555625	180	const AliTPCParam *);
fe4da5cc	181	AliTPCtrack(const AliTPCtrack& t);
	182	int PropagateTo(Double_t x,
	183	Double_t x0=28.94,Double_t rho=0.9e-3,Double_t pm=0.139);
	184	void PropagateToVertex(
	185	Double_t x0=36.66,Double_t rho=1.2e-3,Double_t pm=0.139);
	186	void Update(const AliTPCcluster* c, Double_t chi2);
	187	int Rotate(Double_t angle);
	188
	189	void UseClusters() const ;
	190	Double_t GetPredictedChi2(const AliTPCcluster*) const ;
	191	Double_t GetX() const {return ref;}
	192	Double_t GetY() const {return x(0);}
	193	Double_t GetC() const {return x(2);}
	194	Double_t GetY(Double_t x) const;
	195	Double_t GetZ() const {return x(1);}
	196	Double_t GetTgl() const {return x(4);}
	197	Double_t GetPt() const {return 0.3*FIELD/x(2)/100;}
	198	int GetLab() const ;
	199	Double_t GetSigmaY2() const {return C(0,0);}
	200	Double_t GetSigmaZ2() const {return C(1,1);}
	201	Double_t GetSigmaC2() const {return C(2,2);}
	202	Double_t GetSigmaTgl2() const {return C(4,4);}
	203	Double_t GetAlpha() const {return fAlpha;}
	204	Double_t GetChi2() const {return chi2;}
	205	operator int() const {return clusters.GetEntriesFast();}
	206	AliTPCcluster& operator[](int i) {
	207	return ((AliTPCcluster)clusters.UncheckedAt(i));
	208	}
	209	void GetPxPyPz(Double_t&, Double_t&, Double_t&) const ;
	210	void GetXYZ(Double_t& X,Double_t& Y,Double_t& Z) const {X=ref;Y=x(0);Z=x(1);}
	211
	212	ClassDef(AliTPCtrack,1) // Time Projection Chamber reconstructed tracks
	213	};
	214
	215	//_____Classes for internal tracking use ______________________________________
	216
	217	class TrackSeed : public AliTPCtrack {
	218	public:
8c555625	219	TrackSeed(const AliTPCcluster& c, const TVector& x, const TMatrix& C,
8c555625	220	const AliTPCParam *p) : AliTPCtrack(c,x,C,p) {}
fe4da5cc	221	Bool_t IsSortable() const {return kTRUE;}
	222	Int_t Compare(TObject *o) {
	223	AliTPCtrack t=(AliTPCtrack)o;
	224	Double_t c =GetSigmaY2();
	225	Double_t co=t->GetSigmaY2();
	226	if (c>co) return 1;
	227	else if (c<co) return -1;
	228	return 0;
	229	}
	230	};
	231
	232	class AliTPCRow {
	233	unsigned num_of_clusters;
	234	const AliTPCcluster *clusters[MAX_CLUSTER_PER_ROW];
	235	public:
	236	AliTPCRow() {num_of_clusters=0;}
	237	void InsertCluster(const AliTPCcluster*);
	238
	239	operator int() const {return num_of_clusters;}
	240	const AliTPCcluster* operator[](int i) const {return clusters[i];}
	241	int Find(Double_t y) const;
	242	};
	243
8c555625	244
fe4da5cc	245	class AliTPCSector {
8c555625	246	protected:
fe4da5cc	247	unsigned num_of_rows;
fe4da5cc	248	AliTPCRow *row;
8c555625	249	const AliTPCParam *param;
fe4da5cc	250	public:
8c555625	251	AliTPCSector() {
	252	row = 0; num_of_rows=0;
	253	param=0;
fe4da5cc	254	}
8c555625	255	virtual void SetUp(AliTPCParam *p) {param=p;}
fe4da5cc	256	virtual ~AliTPCSector() { delete[] row; }
	257	AliTPCRow& operator[](int i) const { return *(row+i); }
	258	virtual Double_t GetX(int l) const = 0;
	259	virtual Double_t GetMaxY(int l) const = 0;
	260	virtual Double_t GetAlpha() const = 0;
	261	};
	262
	263	class AliTPCSSector : public AliTPCSector {
	264	public:
8c555625	265	AliTPCSSector(){}
fe4da5cc	266	virtual ~AliTPCSSector() {}
8c555625	267	virtual void SetUp(AliTPCParam *p) {
	268	param=p;
	269	num_of_rows=p->GetNRowLow();
	270	row=new AliTPCRow[num_of_rows];
	271	}
	272	Double_t GetX(int l) const { return param->GetPadRowRadiiLow(l); }
fe4da5cc	273	Double_t GetAlpha() const {return alpha_low;}
8c555625	274	Double_t GetMaxY(int l) const { return GetX(l)tan(0.5GetAlpha()); }
fe4da5cc	275	};
	276
	277	class AliTPCLSector : public AliTPCSector {
	278	public:
8c555625	279	AliTPCLSector(){}
fe4da5cc	280	virtual ~AliTPCLSector() {}
8c555625	281	virtual void SetUp(AliTPCParam *p) {
	282	param=p;
	283	num_of_rows=p->GetNRowUp();
	284	row=new AliTPCRow[num_of_rows];
	285	}
	286	Double_t GetX(int l) const { return param->GetPadRowRadiiUp(l); }
fe4da5cc	287	Double_t GetAlpha() const {return alpha_up;}
8c555625	288	Double_t GetMaxY(int l) const { return GetX(l)tan(0.5GetAlpha()); }
fe4da5cc	289	};
fe4da5cc	290
8c555625	291
	292
	293
fe4da5cc	294	#endif
fe4da5cc	295