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7deb8eb0 | 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 | **************************************************************************/ | |
15 | ||
16 | /* $Id$ */ | |
17 | ||
18 | /// \ingroup macros | |
19 | /// \file MUONRefit.C | |
20 | /// \brief Macro for refitting ESD tracks from ESD pads | |
21 | /// | |
22 | /// \author Philippe Pillot, SUBATECH | |
23 | ||
24 | #if !defined(__CINT__) || defined(__MAKECINT__) | |
25 | #include <TStopwatch.h> | |
26 | #include <TFile.h> | |
27 | #include <TTree.h> | |
28 | #include <TString.h> | |
29 | #include <Riostream.h> | |
30 | #include <TGeoManager.h> | |
31 | #include <TRandom.h> | |
32 | #include <TROOT.h> | |
33 | ||
34 | // STEER includes | |
7deb8eb0 | 35 | #include "AliESDEvent.h" |
36 | #include "AliESDMuonTrack.h" | |
7deb8eb0 | 37 | #include "AliCDBManager.h" |
38 | #include "AliGeomManager.h" | |
39 | ||
40 | // MUON includes | |
a99c3449 | 41 | #include "AliMUONCDB.h" |
7deb8eb0 | 42 | #include "AliMUONRecoParam.h" |
43 | #include "AliMUONESDInterface.h" | |
44 | #include "AliMUONRefitter.h" | |
45 | #include "AliMUONVDigit.h" | |
7deb8eb0 | 46 | #include "AliMUONTrack.h" |
47 | #include "AliMUONVTrackStore.h" | |
48 | #include "AliMUONTrackParam.h" | |
7deb8eb0 | 49 | #endif |
50 | ||
51 | const Int_t printLevel = 1; | |
52 | ||
7deb8eb0 | 53 | TTree* GetESDTree(TFile *esdFile); |
54 | ||
55 | //----------------------------------------------------------------------- | |
a99c3449 | 56 | void MUONRefit(Int_t nevents = -1, const char* esdFileNameIn = "AliESDs.root", const char* esdFileNameOut = "AliESDs_New.root", |
57 | const char* geoFilename = "geometry.root", const char* ocdbPath = "local://$ALICE_ROOT/OCDB") | |
7deb8eb0 | 58 | { |
a99c3449 | 59 | /// Example of muon refitting: |
7deb8eb0 | 60 | /// refit ESD tracks from ESD pads (i.e. re-clusterized the attached ESD clusters); |
61 | /// reset the charge of the digit using their raw charge before refitting; | |
62 | /// compare results with original ESD tracks; | |
63 | /// write results in a new ESD file | |
64 | ||
7deb8eb0 | 65 | // open the ESD file and tree |
66 | TFile* esdFile = TFile::Open(esdFileNameIn); | |
67 | TTree* esdTree = GetESDTree(esdFile); | |
68 | ||
ad3c6eda | 69 | // create the ESD output file and tree |
70 | TFile* newESDFile = TFile::Open(esdFileNameOut, "RECREATE"); | |
71 | newESDFile->SetCompressionLevel(2); | |
7deb8eb0 | 72 | TTree* newESDTree = esdTree->CloneTree(0); |
73 | ||
74 | // connect ESD event to the ESD tree | |
75 | AliESDEvent* esd = new AliESDEvent(); | |
76 | esd->ReadFromTree(esdTree); | |
a99c3449 | 77 | |
78 | // get run number | |
79 | if (esdTree->GetEvent(0) <= 0) { | |
80 | Error("MUONRefit", "no ESD object found for event 0"); | |
81 | return; | |
82 | } | |
83 | Int_t runNumber = esd->GetRunNumber(); | |
84 | ||
85 | // Import TGeo geometry | |
86 | if (!gGeoManager) { | |
87 | AliGeomManager::LoadGeometry(geoFilename); | |
88 | if (!gGeoManager) { | |
89 | Error("MUONRefit", "getting geometry from file %s failed", "generated/galice.root"); | |
90 | exit(-1); | |
91 | } | |
92 | } | |
93 | ||
94 | // load necessary data from OCDB | |
95 | AliCDBManager::Instance()->SetDefaultStorage(ocdbPath); | |
96 | AliCDBManager::Instance()->SetRun(runNumber); | |
97 | if (!AliMUONCDB::LoadField()) return; | |
98 | if (!AliMUONCDB::LoadMapping(kTRUE)) return; | |
99 | ||
100 | // reconstruction parameters for the refitting | |
101 | AliMUONRecoParam* recoParam = AliMUONRecoParam::GetLowFluxParam(); | |
102 | Info("MUONRefit", "\n Reconstruction parameters for refitting:"); | |
103 | recoParam->Print("FULL"); | |
104 | ||
105 | AliMUONESDInterface esdInterface; | |
106 | AliMUONRefitter refitter(recoParam); | |
107 | refitter.Connect(&esdInterface); | |
108 | gRandom->SetSeed(1); | |
109 | ||
7deb8eb0 | 110 | // timer start... |
111 | TStopwatch timer; | |
112 | ||
113 | // Loop over ESD events | |
114 | if (nevents > 0) nevents = TMath::Min(nevents,(Int_t)esdTree->GetEntries()); | |
115 | else nevents = (Int_t)esdTree->GetEntries(); | |
116 | for (Int_t iEvent = 0; iEvent < nevents; iEvent++) { | |
117 | if (printLevel>0) cout<<endl<<" ****************event #"<<iEvent+1<<"****************"<<endl; | |
118 | ||
119 | //----------------------------------------------// | |
120 | // -------------- process event --------------- // | |
121 | //----------------------------------------------// | |
122 | // get the ESD of current event | |
123 | esdTree->GetEvent(iEvent); | |
124 | if (!esd) { | |
17e52d9f | 125 | Error("MUONRefit", "no ESD object found for event %d", iEvent); |
7deb8eb0 | 126 | return; |
127 | } | |
128 | Int_t nTracks = (Int_t)esd->GetNumberOfMuonTracks(); | |
129 | if (nTracks < 1) continue; | |
130 | ||
131 | // load the current event | |
a99c3449 | 132 | esdInterface.LoadEvent(*esd, kFALSE); |
7deb8eb0 | 133 | |
134 | // loop over digit to modify their charge | |
135 | AliMUONVDigit *digit; | |
136 | TIter next(esdInterface.CreateDigitIterator()); | |
b1fea02e | 137 | while ((digit = static_cast<AliMUONVDigit*>(next()))) { |
138 | digit->SetCharge(digit->ADC()); | |
139 | digit->Calibrated(kFALSE); | |
140 | } | |
7deb8eb0 | 141 | |
142 | // refit the tracks from digits | |
143 | AliMUONVTrackStore* newTrackStore = refitter.ReconstructFromDigits(); | |
144 | ||
145 | //----------------------------------------------// | |
146 | // ------ fill new ESD and print results ------ // | |
147 | //----------------------------------------------// | |
148 | // loop over the list of ESD tracks | |
149 | TClonesArray *esdTracks = (TClonesArray*) esd->FindListObject("MuonTracks"); | |
150 | for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) { | |
151 | ||
152 | // get the ESD track | |
153 | AliESDMuonTrack* esdTrack = (AliESDMuonTrack*) esdTracks->UncheckedAt(iTrack); | |
b1fea02e | 154 | |
155 | // skip ghost tracks (leave them unchanged in the new ESD file) | |
156 | if (!esdTrack->ContainTrackerData()) continue; | |
157 | ||
7deb8eb0 | 158 | // get the corresponding MUON track |
630711ed | 159 | AliMUONTrack* track = esdInterface.FindTrack(esdTrack->GetUniqueID()); |
b1fea02e | 160 | |
7deb8eb0 | 161 | // Find the corresponding re-fitted MUON track |
162 | AliMUONTrack* newTrack = (AliMUONTrack*) newTrackStore->FindObject(esdTrack->GetUniqueID()); | |
163 | ||
164 | // replace the content of the current ESD track or remove it if the refitting has failed | |
165 | if (newTrack) { | |
166 | Double_t vertex[3] = {esdTrack->GetNonBendingCoor(), esdTrack->GetBendingCoor(), esdTrack->GetZ()}; | |
167 | AliMUONESDInterface::MUONToESD(*newTrack, *esdTrack, vertex, esdInterface.GetDigits()); | |
168 | } else { | |
169 | esdTracks->Remove(esdTrack); | |
170 | } | |
171 | ||
172 | // print initial and re-fitted track parameters at first cluster if any | |
173 | if (printLevel>0) { | |
174 | cout<<" ----------------track #"<<iTrack+1<<"----------------"<<endl; | |
175 | cout<<"before refit:"<<endl; | |
176 | AliMUONTrackParam *param = (AliMUONTrackParam*) track->GetTrackParamAtCluster()->First(); | |
177 | param->Print("FULL"); | |
178 | if (printLevel>1) param->GetCovariances().Print(); | |
179 | if (!newTrack) continue; | |
180 | cout<<"after refit:"<<endl; | |
181 | param = (AliMUONTrackParam*) newTrack->GetTrackParamAtCluster()->First(); | |
182 | param->Print("FULL"); | |
183 | if (printLevel>1) param->GetCovariances().Print(); | |
184 | cout<<" ----------------------------------------"<<endl; | |
185 | } | |
186 | ||
187 | } | |
188 | ||
189 | // free memory | |
190 | delete newTrackStore; | |
191 | ||
192 | // fill new ESD tree with new tracks | |
193 | esdTracks->Compress(); | |
194 | newESDTree->Fill(); | |
195 | ||
196 | if (printLevel>0) cout<<" ****************************************"<<endl; | |
197 | } | |
198 | ||
199 | // ...timer stop | |
200 | timer.Stop(); | |
201 | ||
202 | // write output ESD tree | |
ad3c6eda | 203 | newESDFile->cd(); |
7deb8eb0 | 204 | newESDTree->Write(); |
ad3c6eda | 205 | delete newESDTree; |
7deb8eb0 | 206 | newESDFile->Close(); |
207 | ||
208 | // free memory | |
209 | esdFile->Close(); | |
7deb8eb0 | 210 | delete esd; |
a99c3449 | 211 | delete recoParam; |
7deb8eb0 | 212 | |
213 | cout<<endl<<"time to refit: R:"<<timer.RealTime()<<" C:"<<timer.CpuTime()<<endl<<endl; | |
214 | } | |
215 | ||
7deb8eb0 | 216 | //----------------------------------------------------------------------- |
217 | TTree* GetESDTree(TFile *esdFile) | |
218 | { | |
219 | /// Check that the file is properly open | |
220 | /// Return pointer to the ESD Tree | |
221 | ||
222 | if (!esdFile || !esdFile->IsOpen()) { | |
223 | Error("GetESDTree", "opening ESD file failed"); | |
224 | exit(-1); | |
225 | } | |
226 | ||
227 | TTree* tree = (TTree*) esdFile->Get("esdTree"); | |
228 | if (!tree) { | |
229 | Error("GetESDTree", "no ESD tree found"); | |
230 | exit(-1); | |
231 | } | |
232 | ||
233 | return tree; | |
234 | ||
235 | } | |
236 |