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99e5fe42 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
1994c1b0 | 15 | |
16 | //------------------------------------------------------------------------- | |
99e5fe42 | 17 | // Jet ESD Reader |
18 | // ESD reader for jet analysis | |
b45b0c92 | 19 | // Authors: Mercedes Lopez Noriega (mercedes.lopez.noriega@cern.ch) |
20 | // Magali Estienne <magali.estienne@IReS.in2p3.fr> | |
1994c1b0 | 21 | //------------------------------------------------------------------------- |
22 | ||
99e5fe42 | 23 | |
24 | #include <Riostream.h> | |
25 | #include <TSystem.h> | |
26 | #include <TLorentzVector.h> | |
83a444b1 | 27 | #include <TVector3.h> |
b45b0c92 | 28 | #include <TGeoManager.h> |
29 | ||
99e5fe42 | 30 | #include "AliJetESDReader.h" |
31 | #include "AliJetESDReaderHeader.h" | |
32 | #include "AliESD.h" | |
33 | #include "AliESDtrack.h" | |
b45b0c92 | 34 | #include "AliEMCALGeometry.h" |
35 | #include "AliJetFillUnitArrayTracks.h" | |
36 | #include "AliJetUnitArray.h" | |
99e5fe42 | 37 | |
38 | ClassImp(AliJetESDReader) | |
39 | ||
1b7d5d7e | 40 | AliJetESDReader::AliJetESDReader(): |
b45b0c92 | 41 | AliJetReader(), |
42 | fGeom(0), | |
43 | fChain(0x0), | |
44 | fESD(0x0), | |
45 | fHadCorr(0x0), | |
46 | fTpcGrid(0x0), | |
47 | fEmcalGrid(0x0), | |
48 | fPtCut(0), | |
49 | fHCorrection(0), | |
50 | fNumUnits(0), | |
51 | fDebug(0), | |
52 | fNIn(0), | |
53 | fOpt(0), | |
54 | fNeta(0), | |
55 | fNphi(0), | |
56 | fArrayInitialised(0) | |
99e5fe42 | 57 | { |
58 | // Constructor | |
b45b0c92 | 59 | SetEMCALGeometry(); |
99e5fe42 | 60 | } |
61 | ||
62 | //____________________________________________________________________________ | |
63 | ||
64 | AliJetESDReader::~AliJetESDReader() | |
65 | { | |
66 | // Destructor | |
b45b0c92 | 67 | delete fChain; |
68 | delete fESD; | |
69 | delete fTpcGrid; | |
70 | delete fEmcalGrid; | |
99e5fe42 | 71 | } |
72 | ||
73 | //____________________________________________________________________________ | |
74 | ||
75 | void AliJetESDReader::OpenInputFiles() | |
99e5fe42 | 76 | { |
77 | // chain for the ESDs | |
78 | fChain = new TChain("esdTree"); | |
99e5fe42 | 79 | |
80 | // get directory and pattern name from the header | |
7d0f353c | 81 | const char* dirName=fReaderHeader->GetDirectory(); |
82 | const char* pattern=fReaderHeader->GetPattern(); | |
99e5fe42 | 83 | |
7d0f353c | 84 | // // Add files matching patters to the chain |
85 | ||
86 | void *dir = gSystem->OpenDirectory(dirName); | |
87 | const char *name = 0x0; | |
b45b0c92 | 88 | int nesd = ((AliJetESDReaderHeader*) fReaderHeader)->GetNesd(); |
7d0f353c | 89 | int a = 0; |
90 | while ((name = gSystem->GetDirEntry(dir))){ | |
91 | if (a>=nesd) continue; | |
92 | ||
93 | if (strstr(name,pattern)){ | |
94 | char path[256]; | |
95 | sprintf(path,"%s/%s/AliESDs.root",dirName,name); | |
96 | fChain->AddFile(path); | |
97 | a++; | |
98 | } | |
99 | } | |
1994c1b0 | 100 | |
101 | gSystem->FreeDirectory(dir); | |
7d0f353c | 102 | |
103 | ||
104 | fESD = 0; | |
1994c1b0 | 105 | fChain->SetBranchAddress("ESD", &fESD); |
106 | ||
99e5fe42 | 107 | int nMax = fChain->GetEntries(); |
7d0f353c | 108 | |
99e5fe42 | 109 | printf("\nTotal number of events in chain= %d",nMax); |
1994c1b0 | 110 | |
99e5fe42 | 111 | // set number of events in header |
112 | if (fReaderHeader->GetLastEvent() == -1) | |
113 | fReaderHeader->SetLastEvent(nMax); | |
114 | else { | |
115 | Int_t nUsr = fReaderHeader->GetLastEvent(); | |
116 | fReaderHeader->SetLastEvent(TMath::Min(nMax,nUsr)); | |
117 | } | |
118 | } | |
119 | ||
7d0f353c | 120 | void AliJetESDReader::ConnectTree(TTree* tree) { |
b45b0c92 | 121 | // Connect the tree |
7d0f353c | 122 | fChain = (TChain*) tree; |
123 | ||
124 | fChain->SetBranchAddress("ESD", &fESD); | |
125 | Int_t nMax = fChain->GetEntries(); | |
126 | printf("\nTotal number of events in chain= %5d", nMax); | |
127 | // set number of events in header | |
128 | if (fReaderHeader->GetLastEvent() == -1) | |
129 | fReaderHeader->SetLastEvent(nMax); | |
130 | else { | |
131 | Int_t nUsr = fReaderHeader->GetLastEvent(); | |
132 | fReaderHeader->SetLastEvent(TMath::Min(nMax,nUsr)); | |
133 | } | |
134 | } | |
135 | ||
99e5fe42 | 136 | //____________________________________________________________________________ |
137 | ||
7d0f353c | 138 | Bool_t AliJetESDReader::FillMomentumArray(Int_t event) |
99e5fe42 | 139 | { |
1994c1b0 | 140 | // Fill momentum array |
141 | ||
99e5fe42 | 142 | Int_t goodTrack = 0; |
143 | Int_t nt = 0; | |
83a444b1 | 144 | Float_t pt, eta; |
145 | TVector3 p3; | |
1994c1b0 | 146 | |
99e5fe42 | 147 | // clear momentum array |
7d0f353c | 148 | ClearArray(); |
b45b0c92 | 149 | fDebug = fReaderHeader->GetDebug(); |
150 | InitParameters(); | |
99e5fe42 | 151 | // get event from chain |
7d0f353c | 152 | fChain->GetTree()->GetEntry(event); |
153 | ||
154 | if (!fESD) { | |
155 | return kFALSE; | |
156 | } | |
1994c1b0 | 157 | |
99e5fe42 | 158 | // get number of tracks in event (for the loop) |
159 | nt = fESD->GetNumberOfTracks(); | |
1994c1b0 | 160 | // temporary storage of signal and pt cut flag |
83a444b1 | 161 | Int_t* sflag = new Int_t[nt]; |
162 | Int_t* cflag = new Int_t[nt]; | |
1994c1b0 | 163 | |
99e5fe42 | 164 | // get cuts set by user |
7d0f353c | 165 | Float_t ptMin = fReaderHeader->GetPtCut(); |
83a444b1 | 166 | Float_t etaMin = fReaderHeader->GetFiducialEtaMin(); |
167 | Float_t etaMax = fReaderHeader->GetFiducialEtaMax(); | |
1994c1b0 | 168 | |
99e5fe42 | 169 | //loop over tracks |
170 | for (Int_t it = 0; it < nt; it++) { | |
7d0f353c | 171 | AliESDtrack *track = fESD->GetTrack(it); |
172 | UInt_t status = track->GetStatus(); | |
173 | ||
174 | Double_t mom[3]; | |
175 | track->GetPxPyPz(mom); | |
176 | p3.SetXYZ(mom[0],mom[1],mom[2]); | |
177 | pt = p3.Pt(); | |
b45b0c92 | 178 | if ((status & AliESDtrack::kTPCrefit) == 0) continue; // quality check |
179 | if ((status & AliESDtrack::kITSrefit) == 0) continue; // quality check | |
7d0f353c | 180 | if (((AliJetESDReaderHeader*) fReaderHeader)->ReadSignalOnly() |
b45b0c92 | 181 | && TMath::Abs(track->GetLabel()) > 10000) continue; // quality check |
7d0f353c | 182 | if (((AliJetESDReaderHeader*) fReaderHeader)->ReadBkgdOnly() |
b45b0c92 | 183 | && TMath::Abs(track->GetLabel()) < 10000) continue; // quality check |
7d0f353c | 184 | eta = p3.Eta(); |
b45b0c92 | 185 | if ( (eta > etaMax) || (eta < etaMin)) continue; // checking eta cut |
7d0f353c | 186 | |
187 | new ((*fMomentumArray)[goodTrack]) TLorentzVector(p3,p3.Mag()); | |
188 | sflag[goodTrack]=0; | |
189 | if (TMath::Abs(track->GetLabel()) < 10000) sflag[goodTrack]=1; | |
190 | cflag[goodTrack]=0; | |
191 | if (pt > ptMin) cflag[goodTrack]=1; // pt cut | |
192 | goodTrack++; | |
99e5fe42 | 193 | } |
8011d399 | 194 | // set the signal flags |
83a444b1 | 195 | fSignalFlag.Set(goodTrack,sflag); |
196 | fCutFlag.Set(goodTrack,cflag); | |
b45b0c92 | 197 | |
198 | // | |
199 | // | |
200 | AliJetFillUnitArrayTracks *fillUAFromTracks = new AliJetFillUnitArrayTracks(); | |
201 | fillUAFromTracks->SetReaderHeader(fReaderHeader); | |
202 | fillUAFromTracks->SetMomentumArray(fMomentumArray); | |
203 | fillUAFromTracks->SetTPCGrid(fTpcGrid); | |
204 | fillUAFromTracks->SetEMCalGrid(fEmcalGrid); | |
205 | fillUAFromTracks->SetHadCorrection(fHCorrection); | |
206 | fillUAFromTracks->SetHadCorrector(fHadCorr); | |
207 | fNeta = fillUAFromTracks->GetNeta(); | |
208 | fNphi = fillUAFromTracks->GetNphi(); | |
209 | fillUAFromTracks->SetActive(kFALSE); | |
210 | // TPC only or Digits+TPC or Clusters+TPC | |
211 | if(fOpt%2==!0 && fOpt!=0){ | |
212 | fillUAFromTracks->SetActive(kTRUE); | |
213 | fillUAFromTracks->SetUnitArray(fUnitArray); | |
214 | fillUAFromTracks->ExecuteTask("tpc"); | |
215 | } | |
216 | delete fillUAFromTracks; | |
7d0f353c | 217 | return kTRUE; |
99e5fe42 | 218 | } |
219 | ||
b45b0c92 | 220 | |
221 | void AliJetESDReader::SetEMCALGeometry() | |
222 | { | |
223 | // Define EMCAL geometry to be able to read ESDs | |
224 | fGeom = AliEMCALGeometry::GetInstance(); | |
225 | if (fGeom == 0) | |
226 | fGeom = AliEMCALGeometry::GetInstance("SHISH_77_TRD1_2X2_FINAL_110DEG","EMCAL"); | |
227 | ||
228 | // To be setted to run some AliEMCALGeometry functions | |
229 | TGeoManager::Import("geometry.root"); | |
230 | fGeom->GetTransformationForSM(); | |
231 | ||
232 | printf("\n EMCal Geometry set ! \n"); | |
233 | ||
234 | } | |
7d0f353c | 235 | |
b45b0c92 | 236 | void AliJetESDReader::InitParameters() |
237 | { | |
238 | // Initialise parameters | |
239 | fHCorrection = 0; // For hadron correction | |
240 | fHadCorr = 0; // For hadron correction | |
241 | fNumUnits = fGeom->GetNCells(); // Number of cells in EMCAL | |
242 | if(fDebug>1) printf("\n EMCal parameters initiated ! \n"); | |
243 | } | |
244 | ||
245 | void AliJetESDReader::InitUnitArray() | |
246 | { | |
247 | //Initialises unit arrays | |
248 | Int_t nElements = fTpcGrid->GetNEntries(); | |
249 | if(fArrayInitialised) delete [] fUnitArray; | |
250 | if(fTpcGrid->GetGridType()==0) | |
251 | fUnitArray = new AliJetUnitArray[nElements]; | |
252 | if(fTpcGrid->GetGridType()==1) | |
253 | fUnitArray = new AliJetUnitArray[fNumUnits+nElements]; | |
254 | fArrayInitialised = 1; | |
255 | } | |
7d0f353c | 256 | |
99e5fe42 | 257 |