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73042f01 | 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 */ | |
5 | ||
6 | /* $Id$ */ | |
7 | ||
8 | //------------------------------------------------------- | |
9 | // TPC tracker | |
10 | // | |
11 | // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch | |
12 | //------------------------------------------------------- | |
b9de75e1 | 13 | #include "AliTracker.h" |
73042f01 | 14 | #include "AliTPCtrack.h" |
b9de75e1 | 15 | #include "AliTPCreco.h" |
bcc04e2a | 16 | #include "AliTPCcluster.h" |
9c9d2487 | 17 | #include "AliBarrelTrack.h" |
73042f01 | 18 | |
19 | class TFile; | |
3d31f272 | 20 | class TTree; |
21 | class TBranch; | |
b9de75e1 | 22 | class AliTPCParam; |
bcc04e2a | 23 | class TObjArray; |
83d73500 | 24 | class AliESD; |
73042f01 | 25 | |
b9de75e1 | 26 | class AliTPCtracker : public AliTracker { |
73042f01 | 27 | public: |
e502c8c2 | 28 | AliTPCtracker():AliTracker(),fkNIS(0),fkNOS(0) { |
29 | fInnerSec=fOuterSec=0; fSeeds=0; | |
e3f7105e | 30 | fParam = 0; |
e502c8c2 | 31 | } |
bcc04e2a | 32 | AliTPCtracker(const AliTPCParam *par); |
b9de75e1 | 33 | ~AliTPCtracker(); |
34 | ||
35 | Int_t ReadSeeds(const TFile *in); | |
36 | ||
e24ea474 | 37 | Int_t LoadClusters(); |
83d73500 | 38 | Int_t LoadClusters(const TFile *cf); |
bcc04e2a | 39 | void UnloadClusters(); |
73042f01 | 40 | |
b9de75e1 | 41 | AliCluster *GetCluster(Int_t index) const; |
42 | Int_t Clusters2Tracks(const TFile *in, TFile *out); | |
83d73500 | 43 | Int_t Clusters2Tracks(AliESD *event); |
b9de75e1 | 44 | Int_t PropagateBack(const TFile *in, TFile *out); |
83d73500 | 45 | Int_t PropagateBack(AliESD *event); |
e24ea474 | 46 | Int_t PropagateBack(const TFile *in, const TFile *in2, TFile *out); |
08dba16b | 47 | Int_t RefitInward(TFile *outTracks, TFile *inTracks); |
b9de75e1 | 48 | |
49 | virtual void CookLabel(AliKalmanTrack *t,Float_t wrong) const; | |
50 | ||
51 | public: | |
73042f01 | 52 | //**************** Internal tracker class ********************** |
53 | class AliTPCRow { | |
54 | public: | |
bcc04e2a | 55 | AliTPCRow() { |
56 | fN=0; | |
57 | fSize=kMaxClusterPerRow/8; | |
58 | fClusterArray=new AliTPCcluster[fSize]; | |
59 | } | |
60 | ~AliTPCRow() {delete[] fClusterArray;} | |
61 | void InsertCluster(const AliTPCcluster *c, Int_t sec, Int_t row); | |
62 | void ResetClusters() {fN=0;} | |
73042f01 | 63 | operator int() const {return fN;} |
bcc04e2a | 64 | const AliTPCcluster *operator[](Int_t i) const {return fClusters[i];} |
65 | const AliTPCcluster *GetUnsortedCluster(Int_t i) const { | |
66 | return fClusterArray+i; | |
67 | } | |
73042f01 | 68 | UInt_t GetIndex(Int_t i) const {return fIndex[i];} |
69 | Int_t Find(Double_t y) const; | |
b9de75e1 | 70 | void SetX(Double_t x) {fX=x;} |
71 | Double_t GetX() const {return fX;} | |
73042f01 | 72 | |
73 | private: | |
b9de75e1 | 74 | Int_t fN; //number of clusters |
75 | const AliTPCcluster *fClusters[kMaxClusterPerRow]; //pointers to clusters | |
bcc04e2a | 76 | Int_t fSize; //size of array of clusters |
77 | AliTPCcluster *fClusterArray; //array of clusters | |
b9de75e1 | 78 | UInt_t fIndex[kMaxClusterPerRow]; //indeces of clusters |
79 | Double_t fX; //X-coordinate of this row | |
73042f01 | 80 | |
81 | private: | |
82 | AliTPCRow(const AliTPCRow& r); //dummy copy constructor | |
83 | AliTPCRow &operator=(const AliTPCRow& r); //dummy assignment operator | |
84 | }; | |
85 | ||
86 | //**************** Internal tracker class ********************** | |
87 | class AliTPCSector { | |
88 | public: | |
89 | AliTPCSector() { fN=0; fRow = 0; } | |
b9de75e1 | 90 | ~AliTPCSector() { delete[] fRow; } |
73042f01 | 91 | AliTPCRow& operator[](Int_t i) const { return *(fRow+i); } |
92 | Int_t GetNRows() const { return fN; } | |
b9de75e1 | 93 | void Setup(const AliTPCParam *par, Int_t flag); |
94 | Double_t GetX(Int_t l) const {return fRow[l].GetX();} | |
95 | Double_t GetMaxY(Int_t l) const { | |
96 | return GetX(l)*TMath::Tan(0.5*GetAlpha()); | |
97 | } | |
98 | Double_t GetAlpha() const {return fAlpha;} | |
99 | Double_t GetAlphaShift() const {return fAlphaShift;} | |
100 | Int_t GetRowNumber(Double_t x) const { | |
101 | //return pad row number for this x | |
f03e3423 | 102 | Double_t r; |
b46635a4 | 103 | if (fN < 64){ |
f03e3423 | 104 | r=fRow[fN-1].GetX(); |
105 | if (x > r) return fN; | |
106 | r=fRow[0].GetX(); | |
107 | if (x < r) return -1; | |
29fe0389 | 108 | return Int_t((x-r)/f1PadPitchLength + 0.5);} |
f03e3423 | 109 | else{ |
110 | r=fRow[fN-1].GetX(); | |
111 | if (x > r) return fN; | |
112 | r=fRow[0].GetX(); | |
113 | if (x < r) return -1; | |
114 | Double_t r1=fRow[64].GetX(); | |
115 | if(x<r1){ | |
116 | return Int_t((x-r)/f1PadPitchLength + 0.5);} | |
117 | else{ | |
118 | return (Int_t((x-r1)/f2PadPitchLength + 0.5)+64);} | |
119 | } | |
b9de75e1 | 120 | } |
121 | Double_t GetPadPitchWidth() const {return fPadPitchWidth;} | |
b9de75e1 | 122 | |
123 | private: | |
124 | Int_t fN; //number of pad rows | |
73042f01 | 125 | AliTPCRow *fRow; //array of pad rows |
b9de75e1 | 126 | Double_t fAlpha; //opening angle |
127 | Double_t fAlphaShift; //shift angle; | |
128 | Double_t fPadPitchWidth; //pad pitch width | |
bcc04e2a | 129 | Double_t f1PadPitchLength; //pad pitch length |
130 | Double_t f2PadPitchLength; //pad pitch length | |
73042f01 | 131 | private: |
132 | AliTPCSector(const AliTPCSector &s); //dummy copy contructor | |
133 | AliTPCSector& operator=(const AliTPCSector &s);//dummy assignment operator | |
134 | }; | |
135 | ||
73042f01 | 136 | //**************** Internal tracker class ********************** |
137 | class AliTPCseed : public AliTPCtrack { | |
138 | public: | |
139 | AliTPCseed():AliTPCtrack(){} | |
b9de75e1 | 140 | AliTPCseed(const AliTPCtrack &t):AliTPCtrack(t){} |
141 | AliTPCseed(const AliKalmanTrack &t, Double_t a):AliTPCtrack(t,a){} | |
73042f01 | 142 | AliTPCseed(UInt_t index, const Double_t xx[5], |
143 | const Double_t cc[15], Double_t xr, Double_t alpha): | |
144 | AliTPCtrack(index, xx, cc, xr, alpha) {} | |
145 | void SetSampledEdx(Float_t q, Int_t i) { | |
be9c5115 | 146 | Double_t s=GetSnp(), t=GetTgl(); |
147 | q *= TMath::Sqrt((1-s*s)/(1+t*t)); | |
d4cf1daa | 148 | fdEdxSample[i]=q; |
73042f01 | 149 | } |
73042f01 | 150 | void CookdEdx(Double_t low=0.05, Double_t up=0.70); |
151 | ||
152 | private: | |
d4cf1daa | 153 | Float_t fdEdxSample[200]; //array of dE/dx samples |
73042f01 | 154 | }; |
155 | ||
156 | private: | |
08dba16b | 157 | |
b9de75e1 | 158 | void MakeSeeds(Int_t i1, Int_t i2); |
159 | Int_t FollowProlongation(AliTPCseed& t, Int_t rf=0); | |
160 | Int_t FollowBackProlongation(AliTPCseed &s, const AliTPCtrack &t); | |
08dba16b | 161 | Int_t FollowRefitInward(AliTPCseed *seed, AliTPCtrack *track); |
b9de75e1 | 162 | |
163 | AliTPCtracker(const AliTPCtracker& r); //dummy copy constructor | |
164 | AliTPCtracker &operator=(const AliTPCtracker& r);//dummy assignment operator | |
165 | ||
166 | const Int_t fkNIS; //number of inner sectors | |
bcc04e2a | 167 | AliTPCSector *fInnerSec; //array of inner sectors |
b9de75e1 | 168 | const Int_t fkNOS; //number of outer sectors |
bcc04e2a | 169 | AliTPCSector *fOuterSec; //array of outer sectors |
73042f01 | 170 | |
bcc04e2a | 171 | Int_t fN; //number of "active" sectors |
172 | AliTPCSector *fSectors; //pointer to "active" sectors; | |
e3f7105e | 173 | |
174 | AliTPCParam *fParam; //! TPC parameters for outer reference plane [SR, GSI, 18.02.2003] | |
175 | TObjArray *fSeeds; //array of track seeds | |
9c9d2487 | 176 | |
177 | // [SR, 01.04.2003] | |
178 | void SetBarrelTree(const char *mode); | |
179 | void StoreBarrelTrack(AliTPCtrack *ps, Int_t refPlane, Int_t isIn); | |
180 | ||
181 | // [SR, 01.04.2003] | |
182 | TFile *fBarrelFile; // file with "barrel" tracks | |
183 | TTree *fBarrelTree; // tree with "barrel" tracks | |
184 | TBranch *fBarrelBranch; | |
185 | TClonesArray *fBarrelArray; | |
186 | AliBarrelTrack *fBarrelTrack; | |
187 | ||
83d73500 | 188 | ClassDef(AliTPCtracker,1) // Time Projection Chamber tracker |
b9de75e1 | 189 | }; |
73042f01 | 190 | |
191 | #endif | |
192 | ||
193 |