1 #ifndef ALITPCTRACKER_H
2 #define ALITPCTRACKER_H
3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
8 //-------------------------------------------------------
11 // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
12 //-------------------------------------------------------
13 #include "AliTracker.h"
14 #include "AliTPCtrack.h"
15 #include "AliTPCreco.h"
16 #include "AliTPCcluster.h"
17 #include "AliBarrelTrack.h"
23 class AliTPCtracker : public AliTracker {
25 AliTPCtracker():AliTracker(),fkNIS(0),fkNOS(0) {
26 fInnerSec=fOuterSec=0; fSeeds=0;
29 AliTPCtracker(const AliTPCParam *par);
32 Int_t ReadSeeds(const TFile *in);
35 void UnloadClusters();
37 AliCluster *GetCluster(Int_t index) const;
38 Int_t Clusters2Tracks(const TFile *in, TFile *out);
39 Int_t PropagateBack(const TFile *in, TFile *out);
40 Int_t PropagateBack(const TFile *in, const TFile *in2, TFile *out);
41 Int_t RefitInward(TFile *outTracks, TFile *inTracks);
43 virtual void CookLabel(AliKalmanTrack *t,Float_t wrong) const;
46 //**************** Internal tracker class **********************
51 fSize=kMaxClusterPerRow/8;
52 fClusterArray=new AliTPCcluster[fSize];
54 ~AliTPCRow() {delete[] fClusterArray;}
55 void InsertCluster(const AliTPCcluster *c, Int_t sec, Int_t row);
56 void ResetClusters() {fN=0;}
57 operator int() const {return fN;}
58 const AliTPCcluster *operator[](Int_t i) const {return fClusters[i];}
59 const AliTPCcluster *GetUnsortedCluster(Int_t i) const {
60 return fClusterArray+i;
62 UInt_t GetIndex(Int_t i) const {return fIndex[i];}
63 Int_t Find(Double_t y) const;
64 void SetX(Double_t x) {fX=x;}
65 Double_t GetX() const {return fX;}
68 Int_t fN; //number of clusters
69 const AliTPCcluster *fClusters[kMaxClusterPerRow]; //pointers to clusters
70 Int_t fSize; //size of array of clusters
71 AliTPCcluster *fClusterArray; //array of clusters
72 UInt_t fIndex[kMaxClusterPerRow]; //indeces of clusters
73 Double_t fX; //X-coordinate of this row
76 AliTPCRow(const AliTPCRow& r); //dummy copy constructor
77 AliTPCRow &operator=(const AliTPCRow& r); //dummy assignment operator
80 //**************** Internal tracker class **********************
83 AliTPCSector() { fN=0; fRow = 0; }
84 ~AliTPCSector() { delete[] fRow; }
85 AliTPCRow& operator[](Int_t i) const { return *(fRow+i); }
86 Int_t GetNRows() const { return fN; }
87 void Setup(const AliTPCParam *par, Int_t flag);
88 Double_t GetX(Int_t l) const {return fRow[l].GetX();}
89 Double_t GetMaxY(Int_t l) const {
90 return GetX(l)*TMath::Tan(0.5*GetAlpha());
92 Double_t GetAlpha() const {return fAlpha;}
93 Double_t GetAlphaShift() const {return fAlphaShift;}
94 Int_t GetRowNumber(Double_t x) const {
95 //return pad row number for this x
101 if (x < r) return -1;
102 return Int_t((x-r)/f1PadPitchLength + 0.5);}
105 if (x > r) return fN;
107 if (x < r) return -1;
108 Double_t r1=fRow[64].GetX();
110 return Int_t((x-r)/f1PadPitchLength + 0.5);}
112 return (Int_t((x-r1)/f2PadPitchLength + 0.5)+64);}
115 Double_t GetPadPitchWidth() const {return fPadPitchWidth;}
118 Int_t fN; //number of pad rows
119 AliTPCRow *fRow; //array of pad rows
120 Double_t fAlpha; //opening angle
121 Double_t fAlphaShift; //shift angle;
122 Double_t fPadPitchWidth; //pad pitch width
123 Double_t f1PadPitchLength; //pad pitch length
124 Double_t f2PadPitchLength; //pad pitch length
126 AliTPCSector(const AliTPCSector &s); //dummy copy contructor
127 AliTPCSector& operator=(const AliTPCSector &s);//dummy assignment operator
130 //**************** Internal tracker class **********************
131 class AliTPCseed : public AliTPCtrack {
133 AliTPCseed():AliTPCtrack(){}
134 AliTPCseed(const AliTPCtrack &t):AliTPCtrack(t){}
135 AliTPCseed(const AliKalmanTrack &t, Double_t a):AliTPCtrack(t,a){}
136 AliTPCseed(UInt_t index, const Double_t xx[5],
137 const Double_t cc[15], Double_t xr, Double_t alpha):
138 AliTPCtrack(index, xx, cc, xr, alpha) {}
139 void SetSampledEdx(Float_t q, Int_t i) {
140 Double_t s=GetSnp(), t=GetTgl();
141 q *= TMath::Sqrt((1-s*s)/(1+t*t));
144 void CookdEdx(Double_t low=0.05, Double_t up=0.70);
147 Float_t fdEdxSample[200]; //array of dE/dx samples
152 void MakeSeeds(Int_t i1, Int_t i2);
153 Int_t FollowProlongation(AliTPCseed& t, Int_t rf=0);
154 Int_t FollowBackProlongation(AliTPCseed &s, const AliTPCtrack &t);
155 Int_t FollowRefitInward(AliTPCseed *seed, AliTPCtrack *track);
157 AliTPCtracker(const AliTPCtracker& r); //dummy copy constructor
158 AliTPCtracker &operator=(const AliTPCtracker& r);//dummy assignment operator
160 const Int_t fkNIS; //number of inner sectors
161 AliTPCSector *fInnerSec; //array of inner sectors
162 const Int_t fkNOS; //number of outer sectors
163 AliTPCSector *fOuterSec; //array of outer sectors
165 Int_t fN; //number of "active" sectors
166 AliTPCSector *fSectors; //pointer to "active" sectors;
168 AliTPCParam *fParam; //! TPC parameters for outer reference plane [SR, GSI, 18.02.2003]
169 TObjArray *fSeeds; //array of track seeds
172 void SetBarrelTree(const char *mode);
173 void StoreBarrelTrack(AliTPCtrack *ps, Int_t refPlane, Int_t isIn);
176 TFile *fBarrelFile; // file with "barrel" tracks
177 TTree *fBarrelTree; // tree with "barrel" tracks
178 TBranch *fBarrelBranch;
179 TClonesArray *fBarrelArray;
180 AliBarrelTrack *fBarrelTrack;