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 **************************************************************************/
16 //-------------------------------------------------------------------------
18 // ESD reader for jet analysis
19 // Authors: Mercedes Lopez Noriega (mercedes.lopez.noriega@cern.ch)
20 // Magali Estienne <magali.estienne@subatech.in2p3.fr>
21 //-------------------------------------------------------------------------
23 // --- Standard library ---
24 #include <Riostream.h>
26 // --- ROOT system ---
28 #include <TStopwatch.h>
29 #include <TLorentzVector.h>
34 #include <TGeoManager.h>
36 #include <TRefArray.h>
38 #include <TProcessID.h>
41 // --- AliRoot header files ---
42 #include "AliJetESDReader.h"
43 #include "AliJetESDReaderHeader.h"
44 #include "AliESDEvent.h"
46 #include "AliESDtrack.h"
47 #include "AliJetDummyGeo.h"
48 #include "AliJetESDFillUnitArrayTracks.h"
49 #include "AliJetESDFillUnitArrayEMCalDigits.h"
50 #include "AliJetUnitArray.h"
51 #include "AliAnalysisTask.h"
53 ClassImp(AliJetESDReader)
55 AliJetESDReader::AliJetESDReader():
67 fApplyElectronCorrection(kFALSE),
68 fApplyMIPCorrection(kTRUE),
69 fApplyFractionHadronicCorrection(kFALSE),
70 fFractionHadronicCorrection(0.3),
86 //____________________________________________________________________________
87 AliJetESDReader::~AliJetESDReader()
105 //____________________________________________________________________________
106 void AliJetESDReader::OpenInputFiles()
108 // chain for the ESDs
109 fChain = new TChain("esdTree");
111 // get directory and pattern name from the header
112 const char* dirName=fReaderHeader->GetDirectory();
113 const char* pattern=fReaderHeader->GetPattern();
115 // Add files matching patters to the chain
116 void *dir = gSystem->OpenDirectory(dirName);
117 const char *name = 0x0;
118 int nesd = ((AliJetESDReaderHeader*) fReaderHeader)->GetNesd();
120 while ((name = gSystem->GetDirEntry(dir))){
121 if (a>=nesd) continue;
123 if (strstr(name,pattern)){
124 printf("Adding %s\n",name);
126 sprintf(path,"%s/%s/AliESDs.root",dirName,name);
127 fChain->AddFile(path);
132 gSystem->FreeDirectory(dir);
134 fESD = new AliESDEvent();
135 fESD->ReadFromTree(fChain);
137 int nMax = fChain->GetEntries();
139 printf("\n AliJetESDReader: Total number of events in chain= %d \n",nMax);
141 // set number of events in header
142 if (fReaderHeader->GetLastEvent() == -1)
143 fReaderHeader->SetLastEvent(nMax);
145 Int_t nUsr = fReaderHeader->GetLastEvent();
146 fReaderHeader->SetLastEvent(TMath::Min(nMax,nUsr));
151 //__________________________________________________________
152 void AliJetESDReader::SetApplyMIPCorrection(Bool_t val)
155 // Set flag to apply MIP correction fApplyMIPCorrection
156 // - exclusive with fApplyFractionHadronicCorrection
159 fApplyMIPCorrection = val;
160 if(fApplyMIPCorrection == kTRUE)
162 SetApplyFractionHadronicCorrection(kFALSE);
163 printf("Enabling MIP Correction \n");
167 printf("Disabling MIP Correction \n");
171 //__________________________________________________________
172 void AliJetESDReader::SetApplyFractionHadronicCorrection(Bool_t val)
175 // Set flag to apply EMC hadronic correction fApplyFractionHadronicCorrection
176 // - exclusive with fApplyMIPCorrection
179 fApplyFractionHadronicCorrection = val;
180 if(fApplyFractionHadronicCorrection == kTRUE)
182 SetApplyMIPCorrection(kFALSE);
183 printf("Enabling Fraction Hadronic Correction \n");
187 printf("Disabling Fraction Hadronic Correction \n");
191 //__________________________________________________________
192 void AliJetESDReader::SetFractionHadronicCorrection(Double_t val)
195 // Set value to fFractionHadronicCorrection (default is 0.3)
196 // apply EMC hadronic correction fApplyFractionHadronicCorrection
197 // - exclusive with fApplyMIPCorrection
200 fFractionHadronicCorrection = val;
201 if(fFractionHadronicCorrection > 0.0 && fFractionHadronicCorrection <= 1.0)
203 SetApplyFractionHadronicCorrection(kTRUE);
204 printf("Fraction Hadronic Correction %1.3f \n",fFractionHadronicCorrection);
208 SetApplyFractionHadronicCorrection(kFALSE);
213 //____________________________________________________________________________
214 void AliJetESDReader::SetInputEvent(const TObject* esd, const TObject* /*aod*/, const TObject* /*mc*/) {
216 fESD = (AliESDEvent*) esd;
219 //____________________________________________________________________________
220 Bool_t AliJetESDReader::FillMomentumArray()
222 // Fill momentum array
229 // clear momentum array
231 fDebug = fReaderHeader->GetDebug();
232 fOpt = fReaderHeader->GetDetector();
238 // get number of tracks in event (for the loop)
239 nt = fESD->GetNumberOfTracks();
240 printf("Fill Momentum Array %5d \n", nt);
242 // temporary storage of signal and pt cut flag
243 Int_t* sflag = new Int_t[nt];
244 Int_t* cflag = new Int_t[nt];
246 // get cuts set by user
247 Float_t ptMin = fReaderHeader->GetPtCut();
248 Float_t etaMin = fReaderHeader->GetFiducialEtaMin();
249 Float_t etaMax = fReaderHeader->GetFiducialEtaMax();
251 //loop over tracks in ESD
252 for (Int_t it = 0; it < nt; it++) {
253 AliESDtrack *track = fESD->GetTrack(it);
254 UInt_t status = track->GetStatus();
257 track->GetPxPyPz(mom);
258 p3.SetXYZ(mom[0],mom[1],mom[2]);
260 if ((status & AliESDtrack::kTPCrefit) == 0) continue; // quality check
261 if ((status & AliESDtrack::kITSrefit) == 0) continue; // quality check
262 if (((AliJetESDReaderHeader*) fReaderHeader)->ReadSignalOnly()
263 && TMath::Abs(track->GetLabel()) > 10000) continue; // quality check
264 if (((AliJetESDReaderHeader*) fReaderHeader)->ReadBkgdOnly()
265 && TMath::Abs(track->GetLabel()) < 10000) continue; // quality check
267 if ( (eta > etaMax) || (eta < etaMin)) continue; // checking eta cut
269 new ((*fMomentumArray)[goodTrack]) TLorentzVector(p3,p3.Mag());
271 if (TMath::Abs(track->GetLabel()) < 10000) sflag[goodTrack]=1;
273 if (pt > ptMin) cflag[goodTrack]=1; // pt cut
277 // set the signal flags
278 fSignalFlag.Set(goodTrack,sflag);
279 fCutFlag.Set(goodTrack,cflag);
288 //____________________________________________________________________________
289 void AliJetESDReader::CreateTasks(TChain* tree)
292 // For reader task initialization
295 fDebug = fReaderHeader->GetDebug();
296 fDZ = fReaderHeader->GetDZ();
299 // Init EMCAL geometry
303 // Create and init unit array
306 // Create global reader task for analysis
307 fFillUnitArray = new TTask("fFillUnitArray","Fill unit array jet finder");
308 // Create a task for to fill the charged particle information
309 fFillUAFromTracks = new AliJetESDFillUnitArrayTracks();
310 fFillUAFromTracks->SetReaderHeader(fReaderHeader);
311 fFillUAFromTracks->SetGeom(fGeom);
312 fFillUAFromTracks->SetTPCGrid(fTpcGrid);
313 fFillUAFromTracks->SetEMCalGrid(fEmcalGrid);
315 { // Calo dead zones inclusion
316 fFillUAFromTracks->SetGrid0(fGrid0);
317 fFillUAFromTracks->SetGrid1(fGrid1);
318 fFillUAFromTracks->SetGrid2(fGrid2);
319 fFillUAFromTracks->SetGrid3(fGrid3);
320 fFillUAFromTracks->SetGrid4(fGrid4);
322 fFillUAFromTracks->SetApplyMIPCorrection(fApplyMIPCorrection);
323 fFillUAFromTracks->SetHadCorrector(fHadCorr);
324 // Create a task for to fill the neutral particle information
325 fFillUAFromEMCalDigits = new AliJetESDFillUnitArrayEMCalDigits();
326 fFillUAFromEMCalDigits->SetReaderHeader(fReaderHeader);
327 fFillUAFromEMCalDigits->SetGeom(fGeom);
328 fFillUAFromEMCalDigits->SetTPCGrid(fTpcGrid);
329 fFillUAFromEMCalDigits->SetEMCalGrid(fEmcalGrid);
330 fFillUAFromEMCalDigits->SetApplyFractionHadronicCorrection(fApplyFractionHadronicCorrection);
331 fFillUAFromEMCalDigits->SetFractionHadronicCorrection(fFractionHadronicCorrection);
332 fFillUAFromEMCalDigits->SetApplyElectronCorrection(fApplyElectronCorrection);
333 // Add the task to global task
334 fFillUnitArray->Add(fFillUAFromTracks);
335 fFillUnitArray->Add(fFillUAFromEMCalDigits);
336 fFillUAFromTracks->SetActive(kFALSE);
337 fFillUAFromEMCalDigits->SetActive(kFALSE);
339 cout << "Tasks instantiated at that stage ! " << endl;
340 cout << "You can loop over events now ! " << endl;
344 //____________________________________________________________________________
345 Bool_t AliJetESDReader::ExecTasks(Bool_t procid, TRefArray* refArray)
348 // Reader task execussion
352 fRefArray = refArray;
354 // clear momentum array
357 fDebug = fReaderHeader->GetDebug();
358 fOpt = fReaderHeader->GetDetector();
364 // TPC only or Digits+TPC or Clusters+TPC
365 if(fOpt%2==!0 && fOpt!=0){
366 fFillUAFromTracks->SetESD(fESD);
367 fFillUAFromTracks->SetActive(kTRUE);
368 fFillUAFromTracks->SetUnitArray(fUnitArray);
369 fFillUAFromTracks->SetRefArray(fRefArray);
370 fFillUAFromTracks->SetProcId(fProcId);
371 // fFillUAFromTracks->ExecuteTask("tpc"); // Temporarily changed
372 fFillUAFromTracks->Exec("tpc"); // Temporarily added
374 fNumCandidate = fFillUAFromTracks->GetMult();
375 fNumCandidateCut = fFillUAFromTracks->GetMultCut();
379 // Digits only or Digits+TPC
380 if(fOpt>=2 && fOpt<=3){
381 fFillUAFromEMCalDigits->SetESD(fESD);
382 fFillUAFromEMCalDigits->SetActive(kTRUE);
383 fFillUAFromEMCalDigits->SetUnitArray(fUnitArray);
384 fFillUAFromEMCalDigits->SetRefArray(fRefArray);
385 fFillUAFromEMCalDigits->SetProcId(fFillUAFromTracks->GetProcId());
386 fFillUAFromEMCalDigits->SetInitMult(fFillUAFromTracks->GetMult());
387 fFillUAFromEMCalDigits->SetInitMultCut(fFillUAFromTracks->GetMultCut());
388 fFillUAFromEMCalDigits->Exec("digits"); // Temporarily added
389 fNumCandidate = fFillUAFromEMCalDigits->GetMult();
390 fNumCandidateCut = fFillUAFromEMCalDigits->GetMultCut();
393 // fFillUnitArray->ExecuteTask(); // Temporarily commented
398 //____________________________________________________________________________
399 Bool_t AliJetESDReader::SetEMCALGeometry()
402 // Set the EMCal Geometry
405 if (!fTree->GetFile())
408 TString geomFile(fTree->GetFile()->GetName());
409 geomFile.ReplaceAll("AliESDs", "geometry");
411 // temporary workaround for PROOF bug #18505
412 geomFile.ReplaceAll("#geometry.root#geometry.root", "#geometry.root");
413 if(fDebug>1) printf("Current geometry file %s \n", geomFile.Data());
415 // Define EMCAL geometry to be able to read ESDs
416 fGeom = AliJetDummyGeo::GetInstance();
418 fGeom = AliJetDummyGeo::GetInstance("EMCAL_COMPLETE","EMCAL");
420 // To be setted to run some AliEMCALGeometry functions
421 TGeoManager::Import(geomFile);
422 fGeom->GetTransformationForSM();
423 printf("\n EMCal Geometry set ! \n");
428 //____________________________________________________________________________
429 void AliJetESDReader::InitParameters()
431 // Initialise parameters
432 fOpt = fReaderHeader->GetDetector();
433 fHadCorr = 0; // For hadron correction
435 if(fOpt==0 || fOpt==1)
436 fECorrection = 0; // For electron correction
437 else fECorrection = 1; // For electron correction
439 fNumUnits = fGeom->GetNCells(); // Number of cells in EMCAL
440 if(fDebug>1) printf("\n EMCal parameters initiated ! \n");
443 //____________________________________________________________________________
444 void AliJetESDReader::InitUnitArray()
447 // Create and Initialise unit arrays
450 Int_t nElements = fTpcGrid->GetNEntries();
451 Float_t eta = 0., phi = 0., Deta = 0., Dphi = 0.;
452 if(fArrayInitialised) fUnitArray->Delete();
454 if(fTpcGrid->GetGridType()==0)
455 { // Fill the following quantities :
456 // Good track ID, (Eta,Phi) position ID, eta, phi, energy, px, py, pz, Deta, Dphi,
457 // detector flag, in/out jet, pt cut, mass, cluster ID)
458 for(Int_t nBin = 1; nBin < nElements+1; nBin++)
460 fTpcGrid->GetEtaPhiFromIndex2(nBin,phi,eta);
461 phi = ((phi < 0) ? phi + 2. * TMath::Pi() : phi);
462 Deta = fTpcGrid->GetDeta();
463 Dphi = fTpcGrid->GetDphi();
464 new ((*fUnitArray)[nBin-1]) AliJetUnitArray(nBin-1,0,eta,phi,0.,Deta,Dphi,kTpc,kOutJet,kPtSmaller,kPtSmaller,kBad,0.,-1);
468 if(fTpcGrid->GetGridType()==1)
471 Int_t n0 = 0, n1 = 0, n2 = 0, n3 = 0, n4 = 0;
475 // Define a grid of cell for the gaps between SM
476 Double_t phimin0 = 0., phimin1 = 0., phimin2 = 0., phimin3 = 0., phimin4 = 0.;
477 Double_t phimax0 = 0., phimax1 = 0., phimax2 = 0., phimax3 = 0., phimax4 = 0.;
478 fGeom->GetPhiBoundariesOfSMGap(0,phimin0,phimax0);
479 fGrid0 = new AliJetGrid(0,95,phimin0,phimax0,-0.7,0.7); // 0.015 x 0.015
480 fGrid0->SetGridType(0);
481 fGrid0->SetMatrixIndexes();
482 fGrid0->SetIndexIJ();
483 n0 = fGrid0->GetNEntries();
484 fGeom->GetPhiBoundariesOfSMGap(1,phimin1,phimax1);
485 fGrid1 = new AliJetGrid(0,95,phimin1,phimax1,-0.7,0.7); // 0.015 x 0.015
486 fGrid1->SetGridType(0);
487 fGrid1->SetMatrixIndexes();
488 fGrid1->SetIndexIJ();
489 n1 = fGrid1->GetNEntries();
490 fGeom->GetPhiBoundariesOfSMGap(2,phimin2,phimax2);
491 fGrid2 = new AliJetGrid(0,95,phimin2,phimax2,-0.7,0.7); // 0.015 x 0.015
492 fGrid2->SetGridType(0);
493 fGrid2->SetMatrixIndexes();
494 fGrid2->SetIndexIJ();
495 n2 = fGrid2->GetNEntries();
496 fGeom->GetPhiBoundariesOfSMGap(3,phimin3,phimax3);
497 fGrid3 = new AliJetGrid(0,95,phimin3,phimax3,-0.7,0.7); // 0.015 x 0.015
498 fGrid3->SetGridType(0);
499 fGrid3->SetMatrixIndexes();
500 fGrid3->SetIndexIJ();
501 n3 = fGrid3->GetNEntries();
502 fGeom->GetPhiBoundariesOfSMGap(4,phimin4,phimax4);
503 fGrid4 = new AliJetGrid(0,95,phimin4,phimax4,-0.7,0.7); // 0.015 x 0.015
504 fGrid4->SetGridType(0);
505 fGrid4->SetMatrixIndexes();
506 fGrid4->SetIndexIJ();
507 n4 = fGrid4->GetNEntries();
509 nGaps = n0+n1+n2+n3+n4;
513 for(Int_t nBin = 0; nBin < fNumUnits+nElements+nGaps; nBin++)
517 fGeom->EtaPhiFromIndex(nBin, eta, phi); // From EMCal geometry
518 // fEmcalGrid->GetEtaPhiFromIndex2(nBin,phi,eta); // My function from Grid
519 phi = ((phi < 0) ? phi + 2. * TMath::Pi() : phi);
520 Deta = fEmcalGrid->GetDeta(); // Modify with the exact detector values
521 Dphi = fEmcalGrid->GetDphi(); // Modify with the exact detector values
522 new ((*fUnitArray)[nBin]) AliJetUnitArray(nBin,0,eta,phi,0.,Deta,Dphi,kTpc,kOutJet,kPtSmaller,kPtSmaller,kBad,0.,-1);
525 if(nBin>=fNumUnits && nBin<fNumUnits+nElements){
526 fTpcGrid->GetEtaPhiFromIndex2(nBin+1-fNumUnits,phi,eta);
527 phi = ((phi < 0) ? phi + 2. * TMath::Pi() : phi);
528 Deta = fTpcGrid->GetDeta();
529 Dphi = fTpcGrid->GetDphi();
530 new ((*fUnitArray)[nBin]) AliJetUnitArray(nBin,0,eta,phi,0.,Deta,Dphi,kTpc,kOutJet,kPtSmaller,kPtSmaller,kBad,0.,-1);
534 if(nBin>=fNumUnits+nElements && nBin<fNumUnits+nElements+nGaps){
535 if(nBin<fNumUnits+nElements+n0)
537 Float_t phi0 = eta = 0.;
538 fGrid0->GetEtaPhiFromIndex2(nBin+1-(fNumUnits+nElements),phi0,eta);
539 Deta = fGrid0->GetDeta();
540 Dphi = fGrid0->GetDphi();
541 new ((*fUnitArray)[nBin]) AliJetUnitArray(nBin,0,eta,phi0,0.,Deta,Dphi,kTpc,kOutJet,kPtSmaller,kPtSmaller,kBad,0.,-1);
543 else if(nBin>=fNumUnits+nElements+n0 && nBin<fNumUnits+nElements+n0+n1)
545 Float_t phi0 = eta = 0.;
546 fGrid1->GetEtaPhiFromIndex2(nBin+1-(fNumUnits+nElements+n0),phi0,eta);
547 Deta = fGrid1->GetDeta();
548 Dphi = fGrid1->GetDphi();
549 new ((*fUnitArray)[nBin]) AliJetUnitArray(nBin,0,eta,phi0,0.,Deta,Dphi,kTpc,kOutJet,kPtSmaller,kPtSmaller,kBad,0.,-1);
551 else if(nBin>=fNumUnits+nElements+n0+n1 && nBin<fNumUnits+nElements+n0+n1+n2)
553 Float_t phi0 = eta = 0.;
554 fGrid2->GetEtaPhiFromIndex2(nBin+1-(fNumUnits+nElements+n0+n1),phi0,eta);
555 Deta = fGrid2->GetDeta();
556 Dphi = fGrid2->GetDphi();
557 new ((*fUnitArray)[nBin]) AliJetUnitArray(nBin,0,eta,phi0,0.,Deta,Dphi,kTpc,kOutJet,kPtSmaller,kPtSmaller,kBad,0.,-1);
559 else if(nBin>=fNumUnits+nElements+n0+n1+n2 && nBin<fNumUnits+nElements+n0+n1+n2+n3)
561 Float_t phi0 = eta = 0.;
562 fGrid3->GetEtaPhiFromIndex2(nBin+1-(fNumUnits+nElements+n0+n1+n2),phi0,eta);
563 Deta = fGrid3->GetDeta();
564 Dphi = fGrid3->GetDphi();
565 new ((*fUnitArray)[nBin]) AliJetUnitArray(nBin,0,eta,phi0,0.,Deta,Dphi,kTpc,kOutJet,kPtSmaller,kPtSmaller,kBad,0.,-1);
567 else if(nBin>=fNumUnits+nElements+n0+n1+n2+n3 && nBin<fNumUnits+nElements+nGaps)
569 Float_t phi0 = eta = 0.;
570 fGrid4->GetEtaPhiFromIndex2(nBin+1-(fNumUnits+nElements+n0+n1+n2+n3),phi0,eta);
571 Deta = fGrid4->GetDeta();
572 Dphi = fGrid4->GetDphi();
573 new ((*fUnitArray)[nBin]) AliJetUnitArray(nBin,0,eta,phi0,0.,Deta,Dphi,kTpc,kOutJet,kPtSmaller,kPtSmaller,kBad,0.,-1);
579 } // end loop on nBin
580 } // end grid type == 1
581 fArrayInitialised = 1;