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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; | |
69877654 | 52 | const Bool_t reconstructFromDigits = kTRUE; // kFALSE = reconstruct from clusters |
7deb8eb0 | 53 | |
7deb8eb0 | 54 | TTree* GetESDTree(TFile *esdFile); |
55 | ||
56 | //----------------------------------------------------------------------- | |
a99c3449 | 57 | void MUONRefit(Int_t nevents = -1, const char* esdFileNameIn = "AliESDs.root", const char* esdFileNameOut = "AliESDs_New.root", |
58 | const char* geoFilename = "geometry.root", const char* ocdbPath = "local://$ALICE_ROOT/OCDB") | |
7deb8eb0 | 59 | { |
a99c3449 | 60 | /// Example of muon refitting: |
7deb8eb0 | 61 | /// refit ESD tracks from ESD pads (i.e. re-clusterized the attached ESD clusters); |
62 | /// reset the charge of the digit using their raw charge before refitting; | |
63 | /// compare results with original ESD tracks; | |
64 | /// write results in a new ESD file | |
65 | ||
7deb8eb0 | 66 | // open the ESD file and tree |
67 | TFile* esdFile = TFile::Open(esdFileNameIn); | |
68 | TTree* esdTree = GetESDTree(esdFile); | |
69 | ||
fe0324de | 70 | // connect ESD event to the ESD tree |
71 | AliESDEvent* esd = new AliESDEvent(); | |
72 | esd->ReadFromTree(esdTree); | |
73 | ||
ad3c6eda | 74 | // create the ESD output file and tree |
75 | TFile* newESDFile = TFile::Open(esdFileNameOut, "RECREATE"); | |
76 | newESDFile->SetCompressionLevel(2); | |
7deb8eb0 | 77 | |
fe0324de | 78 | // connect ESD event to the ESD tree (recreate track branch for backward compatibility) |
79 | esdTree->SetBranchStatus("*MuonTracks*",0); | |
80 | TTree* newESDTree = esdTree->CloneTree(0); | |
81 | esdTree->SetBranchStatus("*MuonTracks*",1); | |
82 | esd->WriteToTree(newESDTree); | |
a99c3449 | 83 | |
84 | // get run number | |
85 | if (esdTree->GetEvent(0) <= 0) { | |
86 | Error("MUONRefit", "no ESD object found for event 0"); | |
87 | return; | |
88 | } | |
89 | Int_t runNumber = esd->GetRunNumber(); | |
90 | ||
91 | // Import TGeo geometry | |
92 | if (!gGeoManager) { | |
93 | AliGeomManager::LoadGeometry(geoFilename); | |
94 | if (!gGeoManager) { | |
95 | Error("MUONRefit", "getting geometry from file %s failed", "generated/galice.root"); | |
96 | exit(-1); | |
97 | } | |
98 | } | |
99 | ||
100 | // load necessary data from OCDB | |
101 | AliCDBManager::Instance()->SetDefaultStorage(ocdbPath); | |
102 | AliCDBManager::Instance()->SetRun(runNumber); | |
103 | if (!AliMUONCDB::LoadField()) return; | |
104 | if (!AliMUONCDB::LoadMapping(kTRUE)) return; | |
105 | ||
106 | // reconstruction parameters for the refitting | |
107 | AliMUONRecoParam* recoParam = AliMUONRecoParam::GetLowFluxParam(); | |
108 | Info("MUONRefit", "\n Reconstruction parameters for refitting:"); | |
109 | recoParam->Print("FULL"); | |
110 | ||
111 | AliMUONESDInterface esdInterface; | |
112 | AliMUONRefitter refitter(recoParam); | |
113 | refitter.Connect(&esdInterface); | |
114 | gRandom->SetSeed(1); | |
115 | ||
7deb8eb0 | 116 | // timer start... |
117 | TStopwatch timer; | |
118 | ||
119 | // Loop over ESD events | |
120 | if (nevents > 0) nevents = TMath::Min(nevents,(Int_t)esdTree->GetEntries()); | |
121 | else nevents = (Int_t)esdTree->GetEntries(); | |
122 | for (Int_t iEvent = 0; iEvent < nevents; iEvent++) { | |
123 | if (printLevel>0) cout<<endl<<" ****************event #"<<iEvent+1<<"****************"<<endl; | |
124 | ||
125 | //----------------------------------------------// | |
126 | // -------------- process event --------------- // | |
127 | //----------------------------------------------// | |
128 | // get the ESD of current event | |
129 | esdTree->GetEvent(iEvent); | |
130 | if (!esd) { | |
17e52d9f | 131 | Error("MUONRefit", "no ESD object found for event %d", iEvent); |
7deb8eb0 | 132 | return; |
133 | } | |
134 | Int_t nTracks = (Int_t)esd->GetNumberOfMuonTracks(); | |
135 | if (nTracks < 1) continue; | |
136 | ||
137 | // load the current event | |
a99c3449 | 138 | esdInterface.LoadEvent(*esd, kFALSE); |
7deb8eb0 | 139 | |
fe0324de | 140 | // remove digits and clusters from ESD |
141 | esd->FindListObject("MuonClusters")->Clear("C"); | |
142 | esd->FindListObject("MuonPads")->Clear("C"); | |
143 | ||
69877654 | 144 | AliMUONVTrackStore* newTrackStore = 0x0; |
145 | if (reconstructFromDigits) { | |
146 | ||
147 | // loop over digits to modify their charge | |
148 | AliMUONVDigit *digit; | |
149 | TIter next(esdInterface.CreateDigitIterator()); | |
150 | while ((digit = static_cast<AliMUONVDigit*>(next()))) { | |
151 | digit->SetCharge(digit->ADC()); | |
152 | digit->Calibrated(kFALSE); | |
153 | } | |
154 | ||
155 | // refit the tracks from digits | |
156 | refitter.SetFirstClusterIndex(0); | |
157 | newTrackStore = refitter.ReconstructFromDigits(); | |
158 | ||
159 | } else { | |
160 | ||
161 | // refit the tracks from clusters | |
162 | newTrackStore = refitter.ReconstructFromClusters(); | |
163 | ||
b1fea02e | 164 | } |
7deb8eb0 | 165 | |
7deb8eb0 | 166 | //----------------------------------------------// |
167 | // ------ fill new ESD and print results ------ // | |
168 | //----------------------------------------------// | |
169 | // loop over the list of ESD tracks | |
170 | TClonesArray *esdTracks = (TClonesArray*) esd->FindListObject("MuonTracks"); | |
171 | for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) { | |
172 | ||
173 | // get the ESD track | |
174 | AliESDMuonTrack* esdTrack = (AliESDMuonTrack*) esdTracks->UncheckedAt(iTrack); | |
b1fea02e | 175 | |
176 | // skip ghost tracks (leave them unchanged in the new ESD file) | |
177 | if (!esdTrack->ContainTrackerData()) continue; | |
178 | ||
7deb8eb0 | 179 | // get the corresponding MUON track |
630711ed | 180 | AliMUONTrack* track = esdInterface.FindTrack(esdTrack->GetUniqueID()); |
b1fea02e | 181 | |
7deb8eb0 | 182 | // Find the corresponding re-fitted MUON track |
183 | AliMUONTrack* newTrack = (AliMUONTrack*) newTrackStore->FindObject(esdTrack->GetUniqueID()); | |
184 | ||
185 | // replace the content of the current ESD track or remove it if the refitting has failed | |
fe0324de | 186 | if (newTrack && (!recoParam->ImproveTracks() || newTrack->IsImproved())) { |
187 | ||
188 | // fill the track info | |
7deb8eb0 | 189 | Double_t vertex[3] = {esdTrack->GetNonBendingCoor(), esdTrack->GetBendingCoor(), esdTrack->GetZ()}; |
fe0324de | 190 | AliMUONESDInterface::MUONToESD(*newTrack, *esdTrack, vertex); |
191 | ||
192 | // add the clusters (and the digits if previously there) | |
193 | for (Int_t i = 0; i < newTrack->GetNClusters(); i++) { | |
194 | AliMUONTrackParam *param = static_cast<AliMUONTrackParam*>(newTrack->GetTrackParamAtCluster()->UncheckedAt(i)); | |
195 | AliMUONESDInterface::MUONToESD(*(param->GetClusterPtr()), *esd, esdInterface.GetDigits()); | |
196 | } | |
197 | ||
198 | } else esdTracks->Remove(esdTrack); | |
7deb8eb0 | 199 | |
200 | // print initial and re-fitted track parameters at first cluster if any | |
201 | if (printLevel>0) { | |
202 | cout<<" ----------------track #"<<iTrack+1<<"----------------"<<endl; | |
203 | cout<<"before refit:"<<endl; | |
204 | AliMUONTrackParam *param = (AliMUONTrackParam*) track->GetTrackParamAtCluster()->First(); | |
205 | param->Print("FULL"); | |
206 | if (printLevel>1) param->GetCovariances().Print(); | |
207 | if (!newTrack) continue; | |
208 | cout<<"after refit:"<<endl; | |
209 | param = (AliMUONTrackParam*) newTrack->GetTrackParamAtCluster()->First(); | |
210 | param->Print("FULL"); | |
211 | if (printLevel>1) param->GetCovariances().Print(); | |
212 | cout<<" ----------------------------------------"<<endl; | |
213 | } | |
214 | ||
215 | } | |
216 | ||
217 | // free memory | |
218 | delete newTrackStore; | |
219 | ||
220 | // fill new ESD tree with new tracks | |
221 | esdTracks->Compress(); | |
222 | newESDTree->Fill(); | |
223 | ||
224 | if (printLevel>0) cout<<" ****************************************"<<endl; | |
225 | } | |
226 | ||
227 | // ...timer stop | |
228 | timer.Stop(); | |
229 | ||
230 | // write output ESD tree | |
ad3c6eda | 231 | newESDFile->cd(); |
7deb8eb0 | 232 | newESDTree->Write(); |
ad3c6eda | 233 | delete newESDTree; |
7deb8eb0 | 234 | newESDFile->Close(); |
235 | ||
236 | // free memory | |
237 | esdFile->Close(); | |
7deb8eb0 | 238 | delete esd; |
a99c3449 | 239 | delete recoParam; |
7deb8eb0 | 240 | |
241 | cout<<endl<<"time to refit: R:"<<timer.RealTime()<<" C:"<<timer.CpuTime()<<endl<<endl; | |
242 | } | |
243 | ||
7deb8eb0 | 244 | //----------------------------------------------------------------------- |
245 | TTree* GetESDTree(TFile *esdFile) | |
246 | { | |
247 | /// Check that the file is properly open | |
248 | /// Return pointer to the ESD Tree | |
249 | ||
250 | if (!esdFile || !esdFile->IsOpen()) { | |
251 | Error("GetESDTree", "opening ESD file failed"); | |
252 | exit(-1); | |
253 | } | |
254 | ||
255 | TTree* tree = (TTree*) esdFile->Get("esdTree"); | |
256 | if (!tree) { | |
257 | Error("GetESDTree", "no ESD tree found"); | |
258 | exit(-1); | |
259 | } | |
260 | ||
261 | return tree; | |
262 | ||
263 | } | |
264 |