1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
17 ///////////////////////////////////////////////////////////////////////////////
19 // class for MUON reconstruction //
21 ///////////////////////////////////////////////////////////////////////////////
22 #include <TParticle.h>
25 #include "AliRunLoader.h"
26 #include "AliHeader.h"
27 #include "AliGenEventHeader.h"
29 #include "AliMUONReconstructor.h"
31 #include "AliMUONData.h"
32 #include "AliMUONEventReconstructor.h"
33 #include "AliMUONClusterReconstructor.h"
34 #include "AliMUONClusterFinderVS.h"
35 #include "AliMUONTrack.h"
36 #include "AliMUONTrackParam.h"
37 #include "AliMUONTriggerTrack.h"
38 #include "AliESDMuonTrack.h"
39 #include "AliRawReader.h"
41 ClassImp(AliMUONReconstructor)
42 //_____________________________________________________________________________
43 AliMUONReconstructor::AliMUONReconstructor()
47 //_____________________________________________________________________________
48 AliMUONReconstructor::~AliMUONReconstructor()
51 //_____________________________________________________________________________
52 void AliMUONReconstructor::Reconstruct(AliRunLoader* runLoader) const
55 AliLoader* loader = runLoader->GetLoader("MUONLoader");
56 Int_t nEvents = runLoader->GetNumberOfEvents();
58 // used local container for each method
59 // passing fLoader as argument, could be avoided ???
60 AliMUONEventReconstructor* recoEvent = new AliMUONEventReconstructor(loader);
61 AliMUONData* dataEvent = recoEvent->GetMUONData();
63 AliMUONClusterReconstructor* recoCluster = new AliMUONClusterReconstructor(loader);
64 AliMUONData* dataCluster = recoCluster->GetMUONData();
65 AliMUONClusterFinderVS *recModel = recoCluster->GetRecoModel();
66 recModel->SetGhostChi2Cut(10);
68 loader->LoadDigits("READ");
69 loader->LoadRecPoints("RECREATE");
70 loader->LoadTracks("RECREATE");
73 for(Int_t ievent = 0; ievent < nEvents; ievent++) {
74 printf("Event %d\n",ievent);
75 runLoader->GetEvent(ievent);
77 //----------------------- digit2cluster & Trigger2Trigger -------------------
78 if (!loader->TreeR()) loader->MakeRecPointsContainer();
81 dataCluster->MakeBranch("RC");
82 dataCluster->SetTreeAddress("D,RC");
83 recoCluster->Digits2Clusters();
84 dataCluster->Fill("RC");
87 dataCluster->MakeBranch("TC");
88 dataCluster->SetTreeAddress("TC");
89 recoCluster->Trigger2Trigger();
90 dataCluster->Fill("TC");
92 loader->WriteRecPoints("OVERWRITE");
94 //---------------------------- Track & TriggerTrack ---------------------
95 if (!loader->TreeT()) loader->MakeTracksContainer();
98 dataEvent->MakeBranch("RL"); //trigger track
99 dataEvent->SetTreeAddress("RL");
100 recoEvent->EventReconstructTrigger();
101 dataEvent->Fill("RL");
104 dataEvent->MakeBranch("RT"); //track
105 dataEvent->SetTreeAddress("RT");
106 recoEvent->EventReconstruct();
107 dataEvent->Fill("RT");
109 loader->WriteTracks("OVERWRITE");
111 //--------------------------- Resetting branches -----------------------
112 dataCluster->ResetDigits();
113 dataCluster->ResetRawClusters();
114 dataCluster->ResetTrigger();
116 dataEvent->ResetRawClusters();
117 dataEvent->ResetTrigger();
118 dataEvent->ResetRecTracks();
119 dataEvent->ResetRecTriggerTracks();
122 loader->UnloadDigits();
123 loader->UnloadRecPoints();
124 loader->UnloadTracks();
130 //_____________________________________________________________________________
131 void AliMUONReconstructor::Reconstruct(AliRunLoader* runLoader, AliRawReader* rawReader) const
134 AliLoader* loader = runLoader->GetLoader("MUONLoader");
136 // used local container for each method
137 // passing fLoader as argument, could be avoided ???
138 AliMUONEventReconstructor* recoEvent = new AliMUONEventReconstructor(loader);
139 AliMUONData* dataEvent = recoEvent->GetMUONData();
141 AliMUONClusterReconstructor* recoCluster = new AliMUONClusterReconstructor(loader);
142 AliMUONData* dataCluster = recoCluster->GetMUONData();
143 AliMUONClusterFinderVS *recModel = recoCluster->GetRecoModel();
144 recModel->SetGhostChi2Cut(10);
146 loader->LoadRecPoints("RECREATE");
147 loader->LoadTracks("RECREATE");
152 while (rawReader->NextEvent()) {
153 printf("Event %d\n",iEvent);
154 runLoader->GetEvent(iEvent++);
156 //----------------------- digit2cluster & Trigger2Trigger -------------------
157 if (!loader->TreeR()) loader->MakeRecPointsContainer();
160 dataCluster->MakeBranch("RC");
161 dataCluster->SetTreeAddress("D,RC");
162 recoCluster->Digits2Clusters(rawReader);
163 dataCluster->Fill("RC");
166 dataCluster->MakeBranch("TC");
167 dataCluster->SetTreeAddress("TC");
168 recoCluster->Trigger2Trigger(rawReader);
169 dataCluster->Fill("TC");
171 loader->WriteRecPoints("OVERWRITE");
173 //---------------------------- Track & TriggerTrack ---------------------
174 if (!loader->TreeT()) loader->MakeTracksContainer();
177 dataEvent->MakeBranch("RL"); //trigger track
178 dataEvent->SetTreeAddress("RL");
179 recoEvent->EventReconstructTrigger();
180 dataEvent->Fill("RL");
183 dataEvent->MakeBranch("RT"); //track
184 dataEvent->SetTreeAddress("RT");
185 recoEvent->EventReconstruct();
186 dataEvent->Fill("RT");
188 loader->WriteTracks("OVERWRITE");
190 //--------------------------- Resetting branches -----------------------
191 dataCluster->ResetDigits();
192 dataCluster->ResetRawClusters();
193 dataCluster->ResetTrigger();
195 dataEvent->ResetRawClusters();
196 dataEvent->ResetTrigger();
197 dataEvent->ResetRecTracks();
198 dataEvent->ResetRecTriggerTracks();
201 loader->UnloadRecPoints();
202 loader->UnloadTracks();
208 //_____________________________________________________________________________
209 void AliMUONReconstructor::FillESD(AliRunLoader* runLoader, AliESD* esd) const
211 TClonesArray* recTracksArray = 0;
212 TClonesArray* recTrigTracksArray = 0;
214 AliLoader* loader = runLoader->GetLoader("MUONLoader");
215 loader->LoadTracks("READ");
216 AliMUONData* muonData = new AliMUONData(loader,"MUON","MUON");
220 Int_t nTrackHits, nPrimary;
224 Double_t bendingSlope, nonBendingSlope, inverseBendingMomentum;
225 Double_t xRec, yRec, zRec, chi2MatchTrigger;
228 // setting pointer for tracks, triggertracks & trackparam at vertex
229 AliMUONTrack* recTrack = 0;
230 AliMUONTrackParam* trackParam = 0;
231 AliMUONTriggerTrack* recTriggerTrack = 0;
232 TParticle* particle = new TParticle();
233 AliGenEventHeader* header = 0;
234 iEvent = runLoader->GetEventNumber();
235 runLoader->GetEvent(iEvent);
237 // vertex calculation (maybe it exists already somewhere else)
238 vertex[0] = vertex[1] = vertex[2] = 0.;
240 if ( (header = runLoader->GetHeader()->GenEventHeader()) ) {
241 header->PrimaryVertex(vertex);
243 runLoader->LoadKinematics("READ");
244 runLoader->TreeK()->GetBranch("Particles")->SetAddress(&particle);
245 nPart = (Int_t)runLoader->TreeK()->GetEntries();
246 for(Int_t iPart = 0; iPart < nPart; iPart++) {
247 runLoader->TreeK()->GetEvent(iPart);
248 if (particle->GetFirstMother() == -1) {
249 vertex[0] += particle->Vx();
250 vertex[1] += particle->Vy();
251 vertex[2] += particle->Vz();
255 vertex[0] /= (double)nPrimary;
256 vertex[1] /= (double)nPrimary;
257 vertex[2] /= (double)nPrimary;
261 // setting ESD MUON class
262 AliESDMuonTrack* theESDTrack = new AliESDMuonTrack() ;
264 //-------------------- trigger tracks-------------
266 muonData->SetTreeAddress("RL");
267 muonData->GetRecTriggerTracks();
268 recTrigTracksArray = muonData->RecTriggerTracks();
270 // ready global trigger pattern from first track
271 if (recTrigTracksArray)
272 recTriggerTrack = (AliMUONTriggerTrack*) recTrigTracksArray->First();
273 if (recTriggerTrack) trigPat = recTriggerTrack->GetGTPattern();
275 //printf(">>> Event %d Number of Recconstructed tracks %d \n",iEvent, nrectracks);
277 // -------------------- tracks-------------
278 muonData->SetTreeAddress("RT");
279 muonData->GetRecTracks();
280 recTracksArray = muonData->RecTracks();
282 Int_t nRecTracks = 0;
284 nRecTracks = (Int_t) recTracksArray->GetEntriesFast(); //
287 for (Int_t iRecTracks = 0; iRecTracks < nRecTracks; iRecTracks++) {
289 // reading info from tracks
290 recTrack = (AliMUONTrack*) recTracksArray->At(iRecTracks);
292 trackParam = (AliMUONTrackParam*) (recTrack->GetTrackParamAtHit())->First();
293 trackParam->ExtrapToVertex(vertex[0],vertex[1],vertex[2]);
295 bendingSlope = trackParam->GetBendingSlope();
296 nonBendingSlope = trackParam->GetNonBendingSlope();
297 inverseBendingMomentum = trackParam->GetInverseBendingMomentum();
298 xRec = trackParam->GetNonBendingCoor();
299 yRec = trackParam->GetBendingCoor();
300 zRec = trackParam->GetZ();
302 nTrackHits = recTrack->GetNTrackHits();
303 fitFmin = recTrack->GetFitFMin();
304 matchTrigger = recTrack->GetMatchTrigger();
305 chi2MatchTrigger = recTrack->GetChi2MatchTrigger();
307 // setting data member of ESD MUON
308 theESDTrack->SetInverseBendingMomentum(inverseBendingMomentum);
309 theESDTrack->SetThetaX(TMath::ATan(nonBendingSlope));
310 theESDTrack->SetThetaY(TMath::ATan(bendingSlope));
311 theESDTrack->SetZ(zRec);
312 theESDTrack->SetBendingCoor(yRec); // calculate vertex at ESD or Tracking level ?
313 theESDTrack->SetNonBendingCoor(xRec);
314 theESDTrack->SetChi2(fitFmin);
315 theESDTrack->SetNHit(nTrackHits);
316 theESDTrack->SetMatchTrigger(matchTrigger);
317 theESDTrack->SetChi2MatchTrigger(chi2MatchTrigger);
319 // storing ESD MUON Track into ESD Event
321 esd->AddMuonTrack(theESDTrack);
324 // add global trigger pattern
326 esd->SetTrigger(trigPat);
329 muonData->ResetRecTracks();
330 muonData->ResetRecTriggerTracks();
332 //} // end loop on event
333 loader->UnloadTracks();
335 runLoader->UnloadKinematics();