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5d60c8f9 | 1 | // $Id$ |
2 | ||
3 | //___________________________________________________________________________ | |
4 | ///////////////////////////////////////////////////////////////////////////// | |
5 | // // | |
6 | // File reader for HLT tracks ESD // | |
7 | // // | |
8 | // loizides@ikf.uni-frankfurt.de // | |
9 | ///////////////////////////////////////////////////////////////////////////// | |
10 | ||
11 | #include <Riostream.h> | |
12 | #include <TMath.h> | |
13 | #include <TString.h> | |
14 | #include <TObjString.h> | |
15 | #include <TTree.h> | |
16 | #include <TFile.h> | |
17 | #include <AliESD.h> | |
18 | #include <AliESDtrack.h> | |
19 | #include <AliESDHLTtrack.h> | |
75a0c43e | 20 | #include <AliL3Track.h> |
53f1300c | 21 | #include <AliL3ITStrack.h> |
46a140bc | 22 | #include <AliL3Vertex.h> |
04a02430 | 23 | #include <AliKalmanTrack.h> |
5d60c8f9 | 24 | #include <AliJetEventParticles.h> |
25 | #include "AliJetParticlesReaderHLT.h" | |
26 | ||
27 | ClassImp(AliJetParticlesReaderHLT) | |
28 | ||
29 | AliJetParticlesReaderHLT::AliJetParticlesReaderHLT(Bool_t bMapper, const Char_t* esdfilename) : | |
d9a296b1 | 30 | AliJetParticlesReaderESD(0,esdfilename), |
04a02430 | 31 | fTrackerType(bMapper), |
32 | fMinHits(0), | |
33 | fMinWeight(0) | |
5d60c8f9 | 34 | { |
35 | //constructor | |
36 | } | |
37 | ||
38 | /********************************************************************/ | |
39 | ||
40 | AliJetParticlesReaderHLT::AliJetParticlesReaderHLT( | |
41 | Bool_t bMapper, | |
42 | TObjArray* dirs, | |
43 | const Char_t* esdfilename) : | |
d9a296b1 | 44 | AliJetParticlesReaderESD(0,dirs,esdfilename), |
04a02430 | 45 | fTrackerType(bMapper), |
46 | fMinHits(0), | |
47 | fMinWeight(0) | |
48 | ||
5d60c8f9 | 49 | { |
50 | //constructor | |
51 | } | |
52 | ||
53 | /********************************************************************/ | |
54 | ||
55 | AliJetParticlesReaderHLT::~AliJetParticlesReaderHLT() | |
56 | { | |
57 | //desctructor | |
58 | } | |
59 | ||
60 | Int_t AliJetParticlesReaderHLT::ReadESD(AliESD* esd) | |
61 | { | |
62 | //Reads one ESD | |
63 | ||
64 | if (esd == 0) | |
65 | { | |
66 | Error("ReadESD","ESD is NULL"); | |
67 | return kFALSE; | |
68 | } | |
69 | ||
04a02430 | 70 | Float_t mf = esd->GetMagneticField(); |
71 | if (mf <= 0.0) | |
72 | { | |
73 | Error("ReadESD","Magnetic Field is 0. Skipping to next event."); | |
74 | return kFALSE; | |
75 | } | |
76 | AliKalmanTrack::SetMagneticField(mf/10.); | |
77 | ||
a86edc4e | 78 | Info("ReadESD","Reading Event %d",fCurrentDir*1000+fCurrentEvent); |
5d60c8f9 | 79 | if((!fOwner) || (fEventParticles==0)) |
80 | fEventParticles = new AliJetEventParticles(); | |
81 | ||
04a02430 | 82 | Int_t ntr=0; |
83 | if(fTrackerType){ | |
84 | ntr =esd->GetNumberOfHLTHoughTracks(); | |
85 | Info("ReadESD","Found %d conformal tracks.",ntr); | |
86 | } else { | |
87 | ntr=esd->GetNumberOfHLTHoughTracks(); | |
88 | Info("ReadESD","Found %d hough tracks.",ntr); | |
89 | } | |
90 | fEventParticles->Reset(ntr); | |
91 | ||
92 | TString headdesc=""; | |
93 | headdesc+="Run "; | |
94 | headdesc+=esd->GetRunNumber(); | |
95 | headdesc+=": Ev "; | |
96 | headdesc+=esd->GetEventNumber(); | |
97 | fEventParticles->SetHeader(headdesc); | |
98 | ||
5d60c8f9 | 99 | Double_t vertexpos[3];//vertex position |
100 | const AliESDVertex* kvertex = esd->GetVertex(); | |
101 | if (kvertex == 0) | |
102 | { | |
103 | Info("ReadESD","ESD returned NULL pointer to vertex - assuming (0.0,0.0,0.0)"); | |
104 | vertexpos[0] = 0.0; | |
105 | vertexpos[1] = 0.0; | |
106 | vertexpos[2] = 0.0; | |
107 | } | |
108 | else | |
109 | { | |
110 | kvertex->GetXYZ(vertexpos); | |
111 | } | |
112 | ||
113 | fEventParticles->SetVertex(vertexpos[0],vertexpos[1],vertexpos[2]); | |
74e5a625 | 114 | //cout << vertexpos[0] << " " << vertexpos[1] << " " << vertexpos[2] << endl; |
46a140bc | 115 | AliL3Vertex v; |
2304b433 | 116 | v.SetX(vertexpos[0]); |
117 | v.SetY(vertexpos[1]); | |
118 | v.SetZ(vertexpos[2]); | |
53f1300c | 119 | |
04a02430 | 120 | for (Int_t i = 0;i<ntr; i++) { |
121 | AliESDHLTtrack *kesdtrack; | |
122 | if(fTrackerType){ | |
123 | kesdtrack=esd->GetHLTConfMapTrack(i); | |
124 | } else { | |
125 | kesdtrack=esd->GetHLTHoughTrack(i); | |
126 | } | |
5d60c8f9 | 127 | |
04a02430 | 128 | if (kesdtrack == 0) |
5d60c8f9 | 129 | { |
130 | Error("ReadESD","Can not get track %d", i); | |
131 | continue; | |
132 | } | |
133 | ||
46a140bc | 134 | //const Float_t kpid=kesdtrack->GetPID(); |
135 | const Int_t knhits=kesdtrack->GetNHits(); | |
136 | const Int_t kweight=kesdtrack->GetWeight(); | |
137 | //cout << i << " " << kweight << " " << knhits << endl; | |
138 | if((fMinHits>0) && (knhits<fMinHits)) continue; | |
139 | if(kweight>1000) continue; //avoid ghosts | |
140 | if((fMinWeight>0) && (kweight<fMinWeight)) continue; | |
141 | ||
142 | Float_t px=kesdtrack->GetPx(); | |
143 | Float_t py=kesdtrack->GetPy(); | |
144 | Float_t pz=kesdtrack->GetPz(); | |
53f1300c | 145 | //cout << px << " " << py << " " << pz << " " << TMath::Sqrt(px*px+py*py) << endl; |
46a140bc | 146 | |
78a77a8f | 147 | if(0&&fTrackerType){ |
53f1300c | 148 | #if 0 |
2304b433 | 149 | //kesdtrack->SetCharge(-kesdtrack->GetCharge()); |
53f1300c | 150 | try { |
151 | Double_t mom[3]; | |
2304b433 | 152 | AliL3ITStrack l3(*kesdtrack,0); |
53f1300c | 153 | if(!l3.GetPxPyPzAt(0,mom)) continue; |
154 | px=mom[0]; | |
155 | py=mom[1]; | |
156 | pz=mom[2]; | |
157 | } catch (const Char_t *msg) { | |
158 | //Warning("Clusters2Tracks",msg); | |
159 | continue; | |
160 | } | |
161 | #else | |
162 | AliL3Track l3; | |
75a0c43e | 163 | //if(!kesdtrack->ComesFromMainVertex()) continue; |
53f1300c | 164 | //cout << "Pos: " << kesdtrack->GetFirstPointX() << " " << kesdtrack->GetFirstPointY() << " " << kesdtrack->GetFirstPointZ() << endl; |
75a0c43e | 165 | l3.SetFirstPoint(kesdtrack->GetFirstPointX(),kesdtrack->GetFirstPointY(),kesdtrack->GetFirstPointZ()); |
166 | l3.SetLastPoint(kesdtrack->GetLastPointX(),kesdtrack->GetLastPointY(),kesdtrack->GetLastPointZ()); | |
167 | l3.SetCharge(kesdtrack->GetCharge()); | |
168 | l3.SetPt(kesdtrack->GetPt()); | |
169 | l3.SetTgl(kesdtrack->GetTgl()); | |
170 | l3.SetPsi(kesdtrack->GetPsi()); | |
171 | l3.CalculateHelix(); | |
53f1300c | 172 | Double_t xc=0.,yc=0.,zc=0.; |
46a140bc | 173 | l3.GetClosestPoint(&v,xc,yc,zc); |
174 | if(TMath::Abs(zc)>10.) continue; | |
53f1300c | 175 | l3.SetFirstPoint(xc,yc,zc); |
176 | //cout << "Pos: " << xc << " " << yc << " " << zc << endl; | |
75a0c43e | 177 | l3.UpdateToFirstPoint(); |
46a140bc | 178 | px=l3.GetPx(); |
179 | py=l3.GetPy(); | |
180 | pz=l3.GetPz(); | |
53f1300c | 181 | #endif |
75a0c43e | 182 | } |
46a140bc | 183 | const Float_t kpt=TMath::Sqrt(px*px+py*py); |
53f1300c | 184 | //cout << px << " " << py << " " << pz << " " << kpt << endl; |
78a77a8f | 185 | |
46a140bc | 186 | const Float_t kp=TMath::Sqrt(pz*pz+kpt*kpt); |
187 | const Float_t keta=0.5*TMath::Log((kp+pz+1e-30)/(kp-pz+1e-30)); | |
188 | const Float_t kphi=TMath::Pi()+TMath::ATan2(-py,-px); | |
5d60c8f9 | 189 | |
04a02430 | 190 | if(IsAcceptedParticle(kpt,kphi,keta)) |
46a140bc | 191 | fEventParticles->AddParticle(px,py,pz,kp,i,kesdtrack->GetMCid(),knhits,kpt,kphi,keta); |
04a02430 | 192 | } //loop over tracks |
5d60c8f9 | 193 | |
5d60c8f9 | 194 | return kTRUE; |
195 | } |