Updating MUON code with the new class AliMUONTrackExtrap (Philippe Pillot)
[u/mrichter/AliRoot.git] / MUON / AliMUONReconstructor.cxx
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cac2eb58 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 **************************************************************************/
cac2eb58 15/* $Id$ */
16
37827b29 17//-----------------------------
18// Class AliMUONReconstructor
19//-----------------------------
9265505b 20// Class for the
21// MUON track reconstruction
30178c30 22
cf464691 23#include "AliMUONReconstructor.h"
b2d7df0b 24
25#include "AliESD.h"
26#include "AliESDMuonTrack.h"
94f6fba9 27#include "AliLog.h"
b2d7df0b 28#include "AliMUON.h"
96fdfe9a 29#include "AliMUONConstants.h"
b2d7df0b 30#include "AliMUONCalibrationData.h"
346fb008 31#include "AliMUONClusterFinderAZ.h"
b2d7df0b 32#include "AliMUONClusterReconstructor.h"
33#include "AliMUONData.h"
34#include "AliMUONDigitCalibrator.h"
cc87ebcd 35#include "AliMUONEventRecoCombi.h"
2cf44ef3 36#include "AliMUONDigitMaker.h"
cac2eb58 37#include "AliMUONTrack.h"
38#include "AliMUONTrackParam.h"
37827b29 39#include "AliMUONTrackExtrap.h"
2457f726 40#include "AliMUONVTrackReconstructor.h"
b2d7df0b 41#include "AliMUONTrackReconstructor.h"
2457f726 42#include "AliMUONTrackReconstructorK.h"
cac2eb58 43#include "AliMUONTriggerTrack.h"
e1a10d41 44#include "AliMUONTriggerCircuit.h"
96fdfe9a 45#include "AliMUONTriggerCrateStore.h"
9265505b 46
47#include "AliMpSegmentation.h"
96fdfe9a 48
cf464691 49#include "AliRawReader.h"
b2d7df0b 50#include "AliRun.h"
51#include "AliRunLoader.h"
52#include "TTask.h"
94f6fba9 53#include "TStopwatch.h"
29f1b13a 54
9265505b 55/// \cond CLASSIMP
cac2eb58 56ClassImp(AliMUONReconstructor)
9265505b 57/// \endcond
b2d7df0b 58
cac2eb58 59//_____________________________________________________________________________
60AliMUONReconstructor::AliMUONReconstructor()
aa6ecf89 61 : AliReconstructor(),
62 fRunLoader(0x0),
63 fDigitMaker(new AliMUONDigitMaker()),
96fdfe9a 64 fCalibrationData(0x0),
65 fCrateManager(new AliMUONTriggerCrateStore()),
e1a10d41 66 fTriggerCircuit(new TClonesArray("AliMUONTriggerCircuit", 234)),
9c4b1ee7 67 fTransformer(new AliMUONGeometryTransformer(kTRUE))
68
8789635b 69{
d19b6003 70/// Default constructor
71
94f6fba9 72 AliDebug(1,"");
96fdfe9a 73 // Crate manager
74 fCrateManager->ReadFromFile();
75
76 // set to digit maker
77 fDigitMaker->SetCrateManager(fCrateManager);
78
9c4b1ee7 79 // transformater
80 fTransformer->ReadGeometryData("volpath.dat", "geometry.root");
81
96fdfe9a 82 // trigger circuit
83 for (Int_t i = 0; i < AliMUONConstants::NTriggerCircuit(); i++) {
e1a10d41 84 AliMUONTriggerCircuit* c = new AliMUONTriggerCircuit();
9c4b1ee7 85 c->SetTransformer(fTransformer);
96fdfe9a 86 c->Init(i,*fCrateManager);
87 TClonesArray& circuit = *fTriggerCircuit;
e1a10d41 88 new(circuit[circuit.GetEntriesFast()])AliMUONTriggerCircuit(*c);
96fdfe9a 89 delete c;
9c4b1ee7 90 }
91
92
8789635b 93}
94f6fba9 94
8789635b 95//_____________________________________________________________________________
96AliMUONReconstructor::~AliMUONReconstructor()
cac2eb58 97{
d19b6003 98/// Destructor
99
94f6fba9 100 AliDebug(1,"");
b2d7df0b 101 delete fCalibrationData;
aa6ecf89 102 delete fDigitMaker;
96fdfe9a 103 delete fCrateManager;
104 delete fTriggerCircuit;
9c4b1ee7 105 delete fTransformer;
cac2eb58 106}
b2d7df0b 107
108//_____________________________________________________________________________
109TTask*
110AliMUONReconstructor::GetCalibrationTask(AliMUONData* data) const
111{
d19b6003 112/// Create the calibration task(s).
b2d7df0b 113
114 const AliRun* run = fRunLoader->GetAliRun();
9f9729c3 115
116 AliInfo("Calibration will occur.");
117 Int_t runNumber = run->GetRunNumber();
118 fCalibrationData = new AliMUONCalibrationData(runNumber);
119 if ( !fCalibrationData->IsValid() )
b2d7df0b 120 {
121 AliError("Could not retrieve calibrations !");
122 delete fCalibrationData;
123 fCalibrationData = 0x0;
124 return 0x0;
125 }
9f9729c3 126 TTask* calibration = new TTask("MUONCalibrator","MUON Digit calibrator");
127 calibration->Add(new AliMUONDigitCalibrator(data,fCalibrationData));
128 //FIXME: calibration->Add(something about dead channels should go here).
129 return calibration;
130
b2d7df0b 131}
132
133//_____________________________________________________________________________
134void
135AliMUONReconstructor::Init(AliRunLoader* runLoader)
136{
d19b6003 137/// Initialize
138
b2d7df0b 139 fRunLoader = runLoader;
140}
141
cac2eb58 142//_____________________________________________________________________________
143void AliMUONReconstructor::Reconstruct(AliRunLoader* runLoader) const
144{
d19b6003 145/// Reconstruct
146/// \todo add more
147
cac2eb58 148 AliLoader* loader = runLoader->GetLoader("MUONLoader");
149 Int_t nEvents = runLoader->GetNumberOfEvents();
150
3bc8b580 151 AliMUONData* data = new AliMUONData(loader,"MUON","MUON");
152
153// passing loader as argument.
2457f726 154 AliMUONVTrackReconstructor* recoEvent;
155 if (strstr(GetOption(),"Original")) recoEvent = new AliMUONTrackReconstructor(data);
156 else if (strstr(GetOption(),"Combi")) recoEvent = new AliMUONTrackReconstructorK(data,"Combi");
157 else recoEvent = new AliMUONTrackReconstructorK(data,"Kalman");
158
96fdfe9a 159 recoEvent->SetTriggerCircuit(fTriggerCircuit);
3bc8b580 160
94f6fba9 161 AliMUONClusterReconstructor* recoCluster = new AliMUONClusterReconstructor(data);
3bc8b580 162
7e4a628d 163 AliMUONClusterFinderVS *recModel = recoCluster->GetRecoModel();
3bc8b580 164
8e0ae46c 165 if (!strstr(GetOption(),"VS")) {
1af223d7 166 recModel = (AliMUONClusterFinderVS*) new AliMUONClusterFinderAZ();
9ffe3ef4 167 recoCluster->SetRecoModel(recModel);
9ffe3ef4 168 }
7e4a628d 169 recModel->SetGhostChi2Cut(10);
cac2eb58 170
171 loader->LoadDigits("READ");
172 loader->LoadRecPoints("RECREATE");
173 loader->LoadTracks("RECREATE");
cc87ebcd 174
b2d7df0b 175 TTask* calibration = GetCalibrationTask(data);
176
2457f726 177 Int_t chBeg = (strstr(GetOption(),"Combi") ? 6 : 0);
9c4b1ee7 178
cc87ebcd 179 // Loop over events
cac2eb58 180 for(Int_t ievent = 0; ievent < nEvents; ievent++) {
94f6fba9 181
182 AliDebug(1,Form("Event %d",ievent));
183
cac2eb58 184 runLoader->GetEvent(ievent);
185
8210cb40 186 //----------------------- digit2cluster & Trigger2Trigger -------------------
cac2eb58 187 if (!loader->TreeR()) loader->MakeRecPointsContainer();
cc87ebcd 188
cac2eb58 189 // tracking branch
2457f726 190 if (!strstr(GetOption(),"Combi")) {
3bc8b580 191 data->MakeBranch("RC");
192 data->SetTreeAddress("D,RC");
cc87ebcd 193 } else {
3bc8b580 194 data->SetTreeAddress("D");
195 data->SetTreeAddress("RCC");
cc87ebcd 196 }
addbf88a 197 // Important for avoiding a memory leak when reading digits ( to be investigated more in detail)
cc87ebcd 198 // In any case the reading of GLT is needed for the Trigger2Tigger method below
3bc8b580 199 data->SetTreeAddress("GLT");
cc87ebcd 200
3bc8b580 201 data->GetDigits();
b2d7df0b 202
203 if ( calibration )
204 {
205 calibration->ExecuteTask();
206 }
207
cc87ebcd 208 recoCluster->Digits2Clusters(chBeg);
b2d7df0b 209
2457f726 210 if (strstr(GetOption(),"Combi")) {
cc87ebcd 211 // Combined cluster / track finder
3bc8b580 212 AliMUONEventRecoCombi::Instance()->FillEvent(data, (AliMUONClusterFinderAZ*)recModel);
cc87ebcd 213 ((AliMUONClusterFinderAZ*) recModel)->SetReco(2);
214 }
3bc8b580 215 else data->Fill("RC");
cac2eb58 216
217 // trigger branch
3bc8b580 218 data->MakeBranch("TC");
219 data->SetTreeAddress("TC");
cc87ebcd 220 recoCluster->Trigger2Trigger();
3bc8b580 221 data->Fill("TC");
cac2eb58 222
cc87ebcd 223 //AZ loader->WriteRecPoints("OVERWRITE");
cac2eb58 224
225 //---------------------------- Track & TriggerTrack ---------------------
226 if (!loader->TreeT()) loader->MakeTracksContainer();
227
228 // trigger branch
3bc8b580 229 data->MakeBranch("RL"); //trigger track
230 data->SetTreeAddress("RL");
cac2eb58 231 recoEvent->EventReconstructTrigger();
3bc8b580 232 data->Fill("RL");
cac2eb58 233
234 // tracking branch
3bc8b580 235 data->MakeBranch("RT"); //track
236 data->SetTreeAddress("RT");
cac2eb58 237 recoEvent->EventReconstruct();
3bc8b580 238 data->Fill("RT");
cac2eb58 239
cc87ebcd 240 loader->WriteTracks("OVERWRITE");
241
2457f726 242 if (strstr(GetOption(),"Combi")) {
cc87ebcd 243 // Combined cluster / track
244 ((AliMUONClusterFinderAZ*) recModel)->SetReco(1);
3bc8b580 245 data->MakeBranch("RC");
246 data->SetTreeAddress("RC");
2457f726 247 AliMUONEventRecoCombi::Instance()->FillRecP(data, (AliMUONTrackReconstructorK*)recoEvent);
3bc8b580 248 data->Fill("RC");
cc87ebcd 249 }
250 loader->WriteRecPoints("OVERWRITE");
251
cac2eb58 252 //--------------------------- Resetting branches -----------------------
3bc8b580 253 data->ResetDigits();
254 data->ResetRawClusters();
255 data->ResetTrigger();
3bc8b580 256 data->ResetRecTracks();
257 data->ResetRecTriggerTracks();
29f1b13a 258
cac2eb58 259 }
260 loader->UnloadDigits();
261 loader->UnloadRecPoints();
262 loader->UnloadTracks();
263
264 delete recoCluster;
265 delete recoEvent;
3bc8b580 266 delete data;
b2d7df0b 267 delete calibration;
cac2eb58 268}
cf464691 269
270//_____________________________________________________________________________
271void AliMUONReconstructor::Reconstruct(AliRunLoader* runLoader, AliRawReader* rawReader) const
272{
d19b6003 273/// Recontruct
274/// \todo add more
275
94f6fba9 276 // AliLoader
cf464691 277 AliLoader* loader = runLoader->GetLoader("MUONLoader");
94f6fba9 278 AliMUONData data(loader,"MUON","MUON");
cf464691 279
94f6fba9 280 // passing loader as argument.
aa6ecf89 281 fDigitMaker->SetMUONData(&data);
1197ff51 282
94f6fba9 283 AliMUONClusterReconstructor recoCluster(&data);
30eabfb8 284
2457f726 285 AliMUONVTrackReconstructor *recoEvent;
286 if (strstr(GetOption(),"Original")) recoEvent = new AliMUONTrackReconstructor(&data);
287 else if (strstr(GetOption(),"Combi")) recoEvent = new AliMUONTrackReconstructorK(&data,"Combi");
288 else recoEvent = new AliMUONTrackReconstructorK(&data,"Kalman");
94f6fba9 289
2457f726 290 recoEvent->SetTriggerCircuit(fTriggerCircuit);
291
94f6fba9 292 AliMUONClusterFinderVS *recModel = recoCluster.GetRecoModel();
293 if (!strstr(GetOption(),"VS"))
294 {
30eabfb8 295 recModel = (AliMUONClusterFinderVS*) new AliMUONClusterFinderAZ();
94f6fba9 296 recoCluster.SetRecoModel(recModel);
30eabfb8 297 }
7e4a628d 298 recModel->SetGhostChi2Cut(10);
cf464691 299
94f6fba9 300 TTask* calibration = GetCalibrationTask(&data);
b2d7df0b 301
cf464691 302 loader->LoadRecPoints("RECREATE");
303 loader->LoadTracks("RECREATE");
94f6fba9 304 loader->LoadDigits("READ");
305
cc87ebcd 306 // Loop over events
8210cb40 307 Int_t iEvent = 0;
94f6fba9 308
309 TStopwatch totalTimer;
310 TStopwatch rawTimer;
311 TStopwatch calibTimer;
312 TStopwatch clusterTimer;
313 TStopwatch trackingTimer;
314
315 rawTimer.Start(kTRUE); rawTimer.Stop();
316 calibTimer.Start(kTRUE); calibTimer.Stop();
317 clusterTimer.Start(kTRUE); clusterTimer.Stop();
318 trackingTimer.Start(kTRUE); trackingTimer.Stop();
319
320 totalTimer.Start(kTRUE);
321
322 while (rawReader->NextEvent())
323 {
324 AliDebug(1,Form("Event %d",iEvent));
325
cf464691 326 runLoader->GetEvent(iEvent++);
ce6a659c 327
328 //----------------------- raw2digits & raw2trigger-------------------
94f6fba9 329 if (!loader->TreeD())
330 {
331 AliDebug(1,Form("Making Digit Container for event %d",iEvent));
332 loader->MakeDigitsContainer();
333 }
334
335 data.SetTreeAddress("D,GLT");
336 rawTimer.Start(kFALSE);
aa6ecf89 337 fDigitMaker->Raw2Digits(rawReader);
94f6fba9 338 rawTimer.Stop();
339
b2d7df0b 340 if ( calibration )
341 {
94f6fba9 342 calibTimer.Start(kFALSE);
b2d7df0b 343 calibration->ExecuteTask();
94f6fba9 344 calibTimer.Stop();
b2d7df0b 345 }
94f6fba9 346
8210cb40 347 //----------------------- digit2cluster & Trigger2Trigger -------------------
94f6fba9 348 clusterTimer.Start(kFALSE);
349
cf464691 350 if (!loader->TreeR()) loader->MakeRecPointsContainer();
cc87ebcd 351
cf464691 352 // tracking branch
94f6fba9 353 data.MakeBranch("RC");
354 data.SetTreeAddress("RC");
355 recoCluster.Digits2Clusters();
356 data.Fill("RC");
cf464691 357
358 // trigger branch
94f6fba9 359 data.MakeBranch("TC");
360 data.SetTreeAddress("TC");
b59ce4c6 361 recoCluster.Trigger2Trigger();
94f6fba9 362 data.Fill("TC");
363
cf464691 364 loader->WriteRecPoints("OVERWRITE");
365
94f6fba9 366 clusterTimer.Stop();
367
cf464691 368 //---------------------------- Track & TriggerTrack ---------------------
94f6fba9 369 trackingTimer.Start(kFALSE);
cf464691 370 if (!loader->TreeT()) loader->MakeTracksContainer();
371
372 // trigger branch
94f6fba9 373 data.MakeBranch("RL"); //trigger track
374 data.SetTreeAddress("RL");
2457f726 375 recoEvent->EventReconstructTrigger();
94f6fba9 376 data.Fill("RL");
cf464691 377
378 // tracking branch
94f6fba9 379 data.MakeBranch("RT"); //track
380 data.SetTreeAddress("RT");
2457f726 381 recoEvent->EventReconstruct();
94f6fba9 382 data.Fill("RT");
cf464691 383
cc87ebcd 384 loader->WriteTracks("OVERWRITE");
94f6fba9 385 trackingTimer.Stop();
386
cf464691 387 //--------------------------- Resetting branches -----------------------
94f6fba9 388 data.ResetDigits();
389 data.ResetRawClusters();
390 data.ResetTrigger();
94f6fba9 391 data.ResetRecTracks();
392 data.ResetRecTriggerTracks();
cc87ebcd 393
cf464691 394 }
94f6fba9 395
396 totalTimer.Stop();
397
cf464691 398 loader->UnloadRecPoints();
399 loader->UnloadTracks();
ce6a659c 400 loader->UnloadDigits();
2457f726 401
402 delete recoEvent;
cf464691 403
94f6fba9 404 AliInfo(Form("Execution time for converting RAW data to digits in MUON : R:%.2fs C:%.2fs",
405 rawTimer.RealTime(),rawTimer.CpuTime()));
406 AliInfo(Form("Execution time for calibrating MUON : R:%.2fs C:%.2fs",
407 calibTimer.RealTime(),calibTimer.CpuTime()));
408 AliInfo(Form("Execution time for clusterizing MUON : R:%.2fs C:%.2fs",
409 clusterTimer.RealTime(),clusterTimer.CpuTime()));
410 AliInfo(Form("Execution time for tracking MUON : R:%.2fs C:%.2fs",
411 trackingTimer.RealTime(),trackingTimer.CpuTime()));
412 AliInfo(Form("Total Execution time for Reconstruct(from raw) MUON : R:%.2fs C:%.2fs",
413 totalTimer.RealTime(),totalTimer.CpuTime()));
cf464691 414}
415
cac2eb58 416//_____________________________________________________________________________
417void AliMUONReconstructor::FillESD(AliRunLoader* runLoader, AliESD* esd) const
418{
d19b6003 419/// Fill ESD
420/// \todo add more
421
cac2eb58 422 TClonesArray* recTracksArray = 0;
423 TClonesArray* recTrigTracksArray = 0;
cc87ebcd 424
cac2eb58 425 AliLoader* loader = runLoader->GetLoader("MUONLoader");
426 loader->LoadTracks("READ");
cac2eb58 427 AliMUONData* muonData = new AliMUONData(loader,"MUON","MUON");
428
cc87ebcd 429 // declaration
a2da7817 430 Int_t iEvent;// nPart;
431 Int_t nTrackHits;// nPrimary;
cac2eb58 432 Double_t fitFmin;
cac2eb58 433
434 Double_t bendingSlope, nonBendingSlope, inverseBendingMomentum;
435 Double_t xRec, yRec, zRec, chi2MatchTrigger;
436 Bool_t matchTrigger;
437
b002ac70 438 // setting pointer for tracks, triggertracks & trackparam at vertex
cac2eb58 439 AliMUONTrack* recTrack = 0;
440 AliMUONTrackParam* trackParam = 0;
441 AliMUONTriggerTrack* recTriggerTrack = 0;
2cf44ef3 442
cc87ebcd 443 iEvent = runLoader->GetEventNumber();
cac2eb58 444 runLoader->GetEvent(iEvent);
445
94f6fba9 446 // Get vertex
447 Double_t vertex[3] = {0};
448 const AliESDVertex *esdVert = esd->GetVertex();
43939bd8 449 if (esdVert->GetNContributors()) {
450 esdVert->GetXYZ(vertex);
451 printf("find vertex\n");
452 }
cac2eb58 453 // setting ESD MUON class
30178c30 454 AliESDMuonTrack* theESDTrack = new AliESDMuonTrack() ;
cac2eb58 455
456 //-------------------- trigger tracks-------------
457 Long_t trigPat = 0;
458 muonData->SetTreeAddress("RL");
459 muonData->GetRecTriggerTracks();
460 recTrigTracksArray = muonData->RecTriggerTracks();
461
462 // ready global trigger pattern from first track
cc87ebcd 463 if (recTrigTracksArray)
cac2eb58 464 recTriggerTrack = (AliMUONTriggerTrack*) recTrigTracksArray->First();
465 if (recTriggerTrack) trigPat = recTriggerTrack->GetGTPattern();
466
467 //printf(">>> Event %d Number of Recconstructed tracks %d \n",iEvent, nrectracks);
cc87ebcd 468
cac2eb58 469 // -------------------- tracks-------------
470 muonData->SetTreeAddress("RT");
471 muonData->GetRecTracks();
472 recTracksArray = muonData->RecTracks();
cc87ebcd 473
cac2eb58 474 Int_t nRecTracks = 0;
475 if (recTracksArray)
476 nRecTracks = (Int_t) recTracksArray->GetEntriesFast(); //
cc87ebcd 477
cac2eb58 478 // loop over tracks
479 for (Int_t iRecTracks = 0; iRecTracks < nRecTracks; iRecTracks++) {
480
481 // reading info from tracks
482 recTrack = (AliMUONTrack*) recTracksArray->At(iRecTracks);
483
889a0215 484 trackParam = (AliMUONTrackParam*) (recTrack->GetTrackParamAtHit())->First();
211c52eb 485
43939bd8 486 if (esdVert->GetNContributors())
37827b29 487 AliMUONTrackExtrap::ExtrapToVertex(trackParam, vertex[0],vertex[1],vertex[2]);
cac2eb58 488
489 bendingSlope = trackParam->GetBendingSlope();
490 nonBendingSlope = trackParam->GetNonBendingSlope();
211c52eb 491 inverseBendingMomentum = trackParam->GetInverseBendingMomentum();
cac2eb58 492 xRec = trackParam->GetNonBendingCoor();
493 yRec = trackParam->GetBendingCoor();
494 zRec = trackParam->GetZ();
495
496 nTrackHits = recTrack->GetNTrackHits();
497 fitFmin = recTrack->GetFitFMin();
498 matchTrigger = recTrack->GetMatchTrigger();
499 chi2MatchTrigger = recTrack->GetChi2MatchTrigger();
500
501 // setting data member of ESD MUON
30178c30 502 theESDTrack->SetInverseBendingMomentum(inverseBendingMomentum);
503 theESDTrack->SetThetaX(TMath::ATan(nonBendingSlope));
504 theESDTrack->SetThetaY(TMath::ATan(bendingSlope));
889a0215 505 theESDTrack->SetZ(zRec);
506 theESDTrack->SetBendingCoor(yRec); // calculate vertex at ESD or Tracking level ?
507 theESDTrack->SetNonBendingCoor(xRec);
30178c30 508 theESDTrack->SetChi2(fitFmin);
509 theESDTrack->SetNHit(nTrackHits);
510 theESDTrack->SetMatchTrigger(matchTrigger);
511 theESDTrack->SetChi2MatchTrigger(chi2MatchTrigger);
cac2eb58 512
cc87ebcd 513 // storing ESD MUON Track into ESD Event
514 if (nRecTracks != 0)
30178c30 515 esd->AddMuonTrack(theESDTrack);
cac2eb58 516 } // end loop tracks
517
cac2eb58 518 // reset muondata
519 muonData->ResetRecTracks();
520 muonData->ResetRecTriggerTracks();
521
cc87ebcd 522 //} // end loop on event
523 loader->UnloadTracks();
2cf44ef3 524
30178c30 525 delete theESDTrack;
cac2eb58 526 delete muonData;
a2da7817 527}//_____________________________________________________________________________
528void AliMUONReconstructor::FillESD(AliRunLoader* runLoader, AliRawReader* /*rawReader*/, AliESD* esd) const
529{
d19b6003 530/// Fill ESD
531/// \todo add more
532
a2da7817 533 // don't need rawReader ???
534 FillESD(runLoader, esd);
cac2eb58 535}