2 //THIS Also includes summing ALL cells in the jetcone towards the jet energy NOT just those above threshold!!!!!
5 /**************************************************************************
6 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
8 * Author: The ALICE Off-line Project. *
9 * Contributors are mentioned in the code where appropriate. *
11 * Permission to use, copy, modify and distribute this software and its *
12 * documentation strictly for non-commercial purposes is hereby granted *
13 * without fee, provided that the above copyright notice appears in all *
14 * copies and that both the copyright notice and this permission notice *
15 * appear in the supporting documentation. The authors make no claims *
16 * about the suitability of this software for any purpose. It is *
17 * provided "as is" without express or implied warranty. *
18 **************************************************************************/
23 Revision 1.15 2004/11/22 19:52:05 mhorner
24 Make sure pi0 get through
26 Revision 1.14 2004/04/02 17:11:33 mhorner
27 Marco's bug - fixes implemented
29 Revision 1.13 2004/03/26 01:00:38 mhorner
30 Implementing Marco's optimisations
32 Revision 1.12 2004/03/15 19:59:37 mhorner
33 Pyhtia comparison extended
35 Revision 1.11 2004/03/09 17:06:38 mhorner
38 Revision 1.10 2004/03/06 01:56:09 mhorner
41 Revision 1.9 2004/02/23 20:37:32 mhorner
44 Revision 1.8 2004/01/29 23:28:44 mhorner
45 Jet Finder - hard coded geom parameters removed
47 Revision 1.7 2004/01/21 22:27:47 mhorner
48 Cleaning up coding conventions
50 Revision 1.6 2003/10/28 13:54:30 schutz
51 Compilation warnings fixed
53 Revision 1.5 2003/09/23 13:31:41 mhorner
54 Changed coordinate system
56 Revision 1.4 2003/09/19 13:16:20 mhorner
57 Added additional jet energy info
60 Revision 1.3 2003/09/04 12:49:56 mhorner
61 Changed hadron correction and added saving EMCAL and track contributions
66 //*--Author: Sarah Blyth (LBL)
67 //*--Based on UA1 jet algorithm from LUND JETSET called from EMC-erj
71 #include "TParticle.h"
73 #include "AliRunLoader.h"
74 #include "AliEMCALJetFinderInput.h"
75 #include "AliEMCALJetFinderOutput.h"
76 #include "AliEMCALJetFinderAlgo.h"
77 #include "AliEMCALJetFinderAlgoOmni.h"
78 #include "AliEMCALJetFinderAlgoUA1Unit.h"
79 #include "AliEMCALGeometry.h"
80 #include "AliEMCALLoader.h"
82 #include "AliEMCALDigit.h"
83 #include "AliEMCALJet.h"
86 ClassImp(AliEMCALJetFinderAlgoOmni)
88 AliEMCALJetFinderAlgoOmni::AliEMCALJetFinderAlgoOmni()
91 if (fDebug>0) Info("AliEMCALJetFinderAlgoOmni","Beginning Default Constructor");
92 AliEMCALGeometry * geom = AliEMCALGeometry::GetInstance("EMCAL_55_25","EMCAL");
94 fNumUnits = geom->GetNTowers(); //Number of towers in EMCAL
95 fESeed = 5.0; //Default value
96 fConeRad = 0.3; //Default value
97 fJetEMin = 10.0; //Default value
98 fEtMin = 0.0; //Default value
99 fMinMove = 0.05; //From original UA1 JetFinder
100 fMaxMove = 0.15; //From original UA1 JetFinder
101 fBGMaxMove = 0.035; //From original UA1 JetFinder
104 fEBGTotal = 1.0; //Set to 1 so that no div by zero in first FindJets() loop
122 fRad = 2.0; //Set to 2 to start
125 fArrayInitialised = 0; //Set to FALSE to start
126 fBGType = kRatio; //Set Ratio method as default BG subtraction method
127 fBGPar = -1.0; //Set to 1 to start
130 AliEMCALJetFinderAlgoOmni::~AliEMCALJetFinderAlgoOmni()
133 if (fDebug>0) Info("AliEMCALJetFinderAlgoOmni","Beginning Destructor");
135 delete[] fUnitNoCuts;
138 void AliEMCALJetFinderAlgoOmni::SetJetFindingParameters
139 (Int_t numUnits, Float_t eSeed, Float_t coneRad, Float_t jetEMin, Float_t etMin,
140 Float_t minMove, Float_t maxMove, Float_t bgMaxMove)
142 //Sets parameters for the JetFinding algorithm
143 if (fDebug>1) Info("SetJetFindingParameters","Setting parameters for JetFinding");
145 SetNumUnits(numUnits);
152 SetBGMaxMove(bgMaxMove);
155 void AliEMCALJetFinderAlgoOmni::SetJetFindingParameters
156 (Int_t numUnits, Float_t eSeed, Float_t coneRad, Float_t jetEMin, Float_t etMin)
158 //Sets fewer parameters for the JetFinding algorithm
159 if (fDebug>1) Info("SetJetFindingParameters","Setting parameters for JetFinding");
161 SetNumUnits(numUnits);
166 SetMinMove(fMinMove);
167 SetMaxMove(fMaxMove);
168 SetBGMaxMove(fBGMaxMove);
171 void AliEMCALJetFinderAlgoOmni::InitUnitArray()
173 //Initialises unit arrays
174 if(fArrayInitialised) delete [] fUnit;
175 if(fArrayInitialised) delete [] fUnitNoCuts;
176 fUnit = new AliEMCALJetFinderAlgoUA1Unit[fNumUnits];
177 fUnitNoCuts = new AliEMCALJetFinderAlgoUA1Unit[fNumUnits];
178 fArrayInitialised = 1;
181 void AliEMCALJetFinderAlgoOmni::FillUnitArray(AliEMCALJetFinderAlgoUA1FillUnitFlagType_t flag)
183 // Fill the unit array
184 if (fDebug>1) Info("FillUnitArray","Beginning FillUnitArray");
185 // AliEMCAL* pEMCAL = (AliEMCAL*) gAlice->GetModule("EMCAL");
187 // AliEMCALGeometry* geom = AliEMCALGeometry::GetInstance(pEMCAL->GetTitle(), "");
191 AliEMCALGeometry * geom = AliEMCALGeometry::GetInstance();
193 geom = AliEMCALGeometry::GetInstance("EMCAL_55_25","EMCAL");
197 AliEMCALJetFinderAlgoUA1FillUnitFlagType_t option = flag;
198 Int_t numTracks, numDigits;
200 //Loops over all elements in the AliEMCALJetFinderAlgoUA1Unit array and
201 //fills the objects with relevant values from the Data Input object
202 if (fDebug>10) Info("FillUnitArray","Filling array with Unit objects");
203 if (fDebug>15) Info("FillUnitArray","NTracks %i NDigits %i",fInputPointer->GetNTracks(),fInputPointer->GetNDigits());
204 numTracks = fInputPointer->GetNTracks();
205 numDigits = fInputPointer->GetNDigits();
207 AliEMCALDigit *myDigit;
208 if (!fPythiaComparison)
210 //Fill units with Track info if appropriate
211 if(option==kFillTracksOnly || option ==kFillAll)
213 for(Int_t j=0; j<numTracks; j++)
215 myPart = fInputPointer->GetTrack(j);
216 Float_t eta = myPart->Eta();
217 Float_t phi = myPart->Phi();
218 Int_t towerID = geom->TowerIndexFromEtaPhi(eta,180.0/TMath::Pi()*phi);
219 Float_t pT = myPart->Pt();
220 Float_t unitEnergy = fUnit[towerID-1].GetUnitEnergy();
221 Float_t unitEnergyNoCuts = fUnitNoCuts[towerID-1].GetUnitEnergy();
224 //OLD WAY: //Do Hadron Correction
227 Double_t fullP = myPart->P();
228 Double_t hCEnergy = fHadCorr->GetEnergy(fullP, (Double_t)eta);
229 unitEnergy -= hCEnergy*TMath::Sin(myPart->Theta());
230 unitEnergyNoCuts -= hCEnergy*TMath::Sin(myPart->Theta());
231 fUnit[towerID-1].SetUnitEnergy(unitEnergy);
232 fUnitNoCuts[towerID-1].SetUnitEnergy(unitEnergyNoCuts);
233 } //end Hadron Correction loop
237 //Do Hadron Correction with propagate phi for the track
242 TParticlePDG *pdg = myPart->GetPDG();
243 if(pdg->Charge() < 0)
245 deltaPhi = PropagatePhi(myPart->Pt(), -1.0, curl);
248 deltaPhi = PropagatePhi(myPart->Pt(), 1.0, curl);
251 //Get new tower id for cell that track would curve into
253 if(phi>(TMath::Pi()/180.0)*geom->GetArm1PhiMax() || phi<(TMath::Pi()/180.0)*geom->GetArm1PhiMin())
258 towerID2 = geom->TowerIndexFromEtaPhi(eta,180.0/TMath::Pi()*phi);
263 //Find unit energy of new tower
264 Float_t unitEnergy2 = fUnit[towerID2-1].GetUnitEnergy();
265 Float_t unitEnergy2NoCuts = fUnitNoCuts[towerID2-1].GetUnitEnergy();
266 Double_t fullP = myPart->P();
267 Double_t hCEnergy = fHadCorr->GetEnergy(fullP, (Double_t)eta);
268 unitEnergy2 -= hCEnergy*TMath::Sin(myPart->Theta());
269 unitEnergy2NoCuts -= hCEnergy*TMath::Sin(myPart->Theta());
270 fUnit[towerID2-1].SetUnitEnergy(unitEnergy2);
271 fUnitNoCuts[towerID2-1].SetUnitEnergy(unitEnergy2NoCuts);
272 }//end if for towerID2
273 }//end Hadron Correction loop
276 fUnitNoCuts[towerID-1].SetUnitEnergy(unitEnergyNoCuts + pT);
277 //Do Pt cut on tracks
278 if(fPtCut != 0 && pT < fPtCut) continue;
280 fUnit[towerID-1].SetUnitEnergy(unitEnergy+pT);
283 }//end Tracks condition
286 //Fill units with Digit info if appropriate
287 if(option ==kFillDigitsOnly || option ==kFillAll)
289 for(Int_t k=0; k<numDigits; k++)
291 myDigit = fInputPointer->GetDigit(k);
292 if (fDebug>10) Info("FillUnitArray","getting digits %i %i numdigits",k,numDigits );
293 Int_t towerID = myDigit->GetId();
294 Int_t amplitude = myDigit->GetAmp(); //Gets the integer valued amplitude of the digit
295 Float_t amp = (Float_t)amplitude; //Need to typecast to Float_t before doing real energy conversion
296 Float_t digitEnergy = amp/10000000.0; //Factor of 10 million needed to convert!
297 Float_t unitEnergy = fUnit[towerID-1].GetUnitEnergy() + digitEnergy;
298 Float_t unitEnergyNoCuts = fUnitNoCuts[towerID-1].GetUnitEnergy() + digitEnergy;
299 fUnit[towerID-1].SetUnitEnergy(unitEnergy);
300 fUnitNoCuts[towerID-1].SetUnitEnergy(unitEnergyNoCuts);
302 }//end digits condition
304 //Set all unit flags, Eta, Phi
305 for(Int_t i=0; i<fNumUnits; i++)
307 if (fDebug>10) Info("FillUnitArray","Setting all units outside jets");
308 //Set all units to be outside a jet initially
309 fUnit[i].SetUnitFlag(kOutJet);
310 fUnit[i].SetUnitID(i+1);
313 geom->EtaPhiFromIndex(fUnit[i].GetUnitID(), eta, phi);
314 fUnit[i].SetUnitEta(eta);
315 fUnit[i].SetUnitPhi(phi*TMath::Pi()/180.0);
316 //Set all units to be outside a jet initially
317 fUnitNoCuts[i].SetUnitFlag(kOutJet);
318 fUnitNoCuts[i].SetUnitID(i+1);
321 geom->EtaPhiFromIndex(fUnitNoCuts[i].GetUnitID(), eta, phi);
322 fUnitNoCuts[i].SetUnitEta(eta);
323 fUnitNoCuts[i].SetUnitPhi(phi*TMath::Pi()/180.0);
324 // if(i>13000) cout<<"!!!!!!!!!!!!!!!!!For unit0, eta="<<eta<<" and phi="<<phi*TMath::Pi()/180.0<<" and ID="<<fUnit[i].GetUnitID()<<endl;
325 // if(fUnit[i].GetUnitEnergy()>0) cout<<"Unit ID "<<fUnit[i].GetUnitID() <<"with eta="<<eta<<" and phi="<<phi*TMath::Pi()/180.0<<" has energy="<<fUnit[i].GetUnitEnergy()<<endl;
326 }//end loop over all units in array (same as all towers in EMCAL)
329 if (fPythiaComparison)
331 for(Int_t j=0; j<numTracks; j++)
333 myPart = fInputPointer->GetTrack(j);
334 fUnit[j].SetUnitID(j);
335 fUnit[j].SetUnitFlag(kOutJet);
336 fUnit[j].SetUnitEta(myPart->Eta());
337 fUnit[j].SetUnitPhi(myPart->Phi());
338 if (myPart->Energy()*TMath::Sin(myPart->Theta()) > fPtCut || myPart->GetPDG()->Charge() == 0.0 )
340 fUnit[j].SetUnitEnergy(myPart->Energy()*TMath::Sin(myPart->Theta()));
343 fUnit[j].SetUnitEnergy(0.00);
345 fUnitNoCuts[j].SetUnitID(j);
346 fUnitNoCuts[j].SetUnitFlag(kOutJet);
347 fUnitNoCuts[j].SetUnitEta(myPart->Eta());
348 fUnitNoCuts[j].SetUnitPhi(myPart->Phi());
349 fUnitNoCuts[j].SetUnitEnergy(myPart->Energy()*TMath::Sin(myPart->Theta()));
351 for(Int_t k=numTracks; k < fNumUnits; k++)
353 fUnit[k].SetUnitID(k);
354 fUnit[k].SetUnitFlag(kBelowMinEt);
355 fUnit[k].SetUnitEta(0.0);
356 fUnit[k].SetUnitPhi(0.0);
357 fUnit[k].SetUnitEnergy(0.0);
358 fUnitNoCuts[k].SetUnitID(k);
359 fUnitNoCuts[k].SetUnitFlag(kBelowMinEt);
360 fUnitNoCuts[k].SetUnitEta(0.0);
361 fUnitNoCuts[k].SetUnitPhi(0.0);
362 fUnitNoCuts[k].SetUnitEnergy(0.0);
371 void AliEMCALJetFinderAlgoOmni::Sort(AliEMCALJetFinderAlgoUA1Unit *unit, Int_t length)
373 //Calls the recursive quicksort method to sort unit objects in decending order of Energy
374 if (fDebug>1) Info("Sort","Sorting Unit objects");
375 QS(unit, 0, length-1);
379 void AliEMCALJetFinderAlgoOmni::QS(AliEMCALJetFinderAlgoUA1Unit *unit, Int_t left, Int_t right)
381 //Sorts the AliEMCALJetFinderAlgoUA1Unit objects in decending order of Energy
382 if (fDebug>111) Info("QS","QuickSorting Unit objects");
386 AliEMCALJetFinderAlgoUA1Unit unitFirst;
387 AliEMCALJetFinderAlgoUA1Unit unitSecond;
391 unitFirst = unit[(left+right)/2];
395 while( (unit[i].GetUnitEnergy() > unitFirst.GetUnitEnergy()) && (i < right)) i++;
396 while( (unitFirst.GetUnitEnergy() > unit[j].GetUnitEnergy()) && (j > left)) j--;
400 unitSecond = unit[i];
402 unit[j] = unitSecond;
408 if(left < j) QS(unit, left, j);
409 if(i < right) QS(unit, i, right);
413 void AliEMCALJetFinderAlgoOmni::FindBG()
415 if(fBGType == kRatio) RatioBG();
416 else if(fBGType == kCone) ConeBG();
417 else if(fBGType == kConstant) ConstantBG();
420 void AliEMCALJetFinderAlgoOmni::RatioBG()
422 //Finds the background energy for the iteration
423 //using the Ratio method
424 if (fDebug>1) Info("FindBG","Finding Average Background");
425 //Store BGEperCell from previous iteration!
426 fEBGTotalOld = fEBGTotal;
430 //If user has not set fBGPar, set it to the default
431 //for TPC = 90% efficiency, PtCut = 2GeV/c, timecut = 30ns
432 if(fBGPar == -1) fBGPar = 0.4685;
434 //Loop over all unit objects in the Unit array and link to same
435 //unit ID in NoCuts Unit array
436 for(Int_t i=0; i<fNumUnits; i++)
438 if(fUnit[i].GetUnitFlag() != kInJet)
440 Int_t id = fUnit[i].GetUnitID();
441 fEBGTotal += fUnitNoCuts[id-1].GetUnitEnergy();
447 fEBGAve = fEBGTotal / (fNumUnits - numCone);
448 if (fDebug>5) Info("FindBG","Average BG is %f: ",fEBGAve);
450 for(Int_t count=0; count<fNumUnits;count++)
452 fUnit[count].SetUnitFlag(kOutJet);
456 void AliEMCALJetFinderAlgoOmni::ConeBG()
458 //Finds the background energy for the iteration
459 //using all energy not contained inside a jet
460 if (fDebug>1) Info("FindBG","Finding Average Background");
461 //Store old value of BGEperCell!
462 fEBGTotalOld = fEBGTotal;
466 //Loop over all unit objects in the array and sum the energy of those not in a jet
467 for(Int_t i=0; i<fNumUnits; i++)
469 if(fUnit[i].GetUnitFlag() != kInJet)
470 fEBGTotal += fUnit[i].GetUnitEnergy();
474 fEBGAve = fEBGTotal / (fNumUnits - numCone);
475 if (fDebug>5) Info("FindBG","Average BG is %f: ",fEBGAve);
477 for(Int_t count=0; count<fNumUnits;count++)
479 fUnit[count].SetUnitFlag(kOutJet);
483 void AliEMCALJetFinderAlgoOmni::ConstantBG()
485 //Finds the background energy for the iteration
486 //using all energy not contained inside a jet
487 if (fDebug>1) Info("FindBG","Finding Average Background");
489 //If user has not set fBGPar, set it to the default
490 //for TPC = 90% efficiency, PtCut = 2GeV/c, timecut = 30ns
491 if(fBGPar == -1) fBGPar = 0.03378;
494 if (fDebug>5) Info("FindBG","Average BG is %f: ",fEBGAve);
498 for(Int_t count=0; count<fNumUnits;count++)
500 if(fUnit[count].GetUnitFlag() == kInJet)
504 fUnit[count].SetUnitFlag(kOutJet);
506 fEBGTotal = fEBGAve * (fNumUnits-numCone);
507 fEBGTotalOld = fEBGTotal;
510 void AliEMCALJetFinderAlgoOmni::FindJetEtaPhi(Int_t counter)
512 //Finds the eta and phi of the jet axis
513 if (fDebug>10) Info("FindJetEtaPhi","Finding Jet Eta and Phi");
515 fDEta = fUnit[counter].GetUnitEta() - fEtaInit;
516 fDPhi = fUnit[counter].GetUnitPhi() - fPhiInit;
518 fEnergy = fUnit[counter].GetUnitEnergy() - fEBGAve;
519 fJetEtaSum += fEnergy * fDEta;
520 fJetPhiSum += fEnergy * fDPhi;
522 if (fJetESum >1.0e-7)
524 fJetEta = fEtaInit + (fJetEtaSum / fJetESum);
525 fJetPhi = fPhiInit + (fJetPhiSum / fJetESum);
530 void AliEMCALJetFinderAlgoOmni::FindJetEnergy()
532 //Finds the energy of the jet after the final axis has been found
533 if (fDebug>1) Info("FindJetEnergy","Finding Jet Energy");
535 for(Int_t i=0; i<fNumUnits; i++)
537 //Loop over all unit objects in the array and find if within cone radius
538 Float_t dEta = fUnit[i].GetUnitEta() - fJetEta;
539 Float_t dPhi = fUnit[i].GetUnitPhi() - fJetPhi;
541 if ((dEta*dEta) + (dPhi*dPhi)>1.e-7)
543 rad = TMath::Sqrt( (dEta*dEta) + (dPhi*dPhi) );
549 if(fUnit[i].GetUnitFlag()==kOutJet && rad<= fConeRad)
551 fUnit[i].SetUnitFlag(kInCurrentJet);
552 Float_t energy = fUnit[i].GetUnitEnergy() - fEBGAve;
554 fJetEtaSum += energy * dEta;
555 fJetPhiSum += energy * dPhi;
556 fNumInCone++; //Increment the number of cells in the jet cone
562 void AliEMCALJetFinderAlgoOmni::StoreJetInfo()
564 //Stores the resulting jet information in appropriate storage structure (TO BE DECIDED!!!!)
565 if (fDebug>1) Info("StoreJetInfo","Storing Jet Information");
566 AliEMCALGeometry * geom = AliEMCALGeometry::GetInstance();
568 geom = AliEMCALGeometry::GetInstance("EMCAL_55_25","EMCAL");
570 //fJetESum is the final jet energy (background has been subtracted)
571 //fJetEta is the final jet Eta
572 //fJetPhi is the final jet Phi
573 //fNumInCone is the final number of cells included in the jet cone
574 //fEtaInit is the eta of the initiator cell
575 //fPhiInit is the phi of the initiator cell
577 AliEMCALJet jet(fJetESum,fJetPhi,fJetEta);
579 cout<<"For iteration "<<fNumIter <<" and Jet number " <<fNumJets <<endl;
580 cout<<"The jet energy is: " <<fJetESum <<endl;
581 cout<<"The jet eta is ---->" <<fJetEta <<endl;
582 cout<<"The jet phi is ---->" <<fJetPhi <<endl;
584 Int_t numberTracks = fInputPointer->GetNTracks();
585 Int_t numberDigits = fInputPointer->GetNDigits();
588 Int_t numTracksInCone = 0;
589 Float_t trackEnergy = 0.0;
590 Float_t trackEnergyPtCut =0.0;
591 Float_t emcalEnergy = 0.0;
592 Float_t emcalEnergyBGSub = 0.0;
594 for(Int_t counter=0; counter<numberTracks; counter++)
596 myP = fInputPointer->GetTrack(counter);
597 Float_t eta = myP->Eta();
598 Float_t phi = myP->Phi();
599 Float_t deta = fJetEta-eta;
600 Float_t dphi = fJetPhi -phi;
601 Float_t rad = TMath::Sqrt( (deta*deta) + (dphi*dphi));
602 if(rad<=fConeRad) numTracksInCone++;
605 Float_t *pTArray = new Float_t[numTracksInCone];
606 Float_t *etaArray = new Float_t[numTracksInCone];
607 Float_t *phiArray = new Float_t[numTracksInCone];
608 Int_t *pdgArray = new Int_t[numTracksInCone];
611 for(Int_t counter2=0; counter2<numberTracks; counter2++)
613 myP = fInputPointer->GetTrack(counter2);
614 Float_t eta = myP->Eta();
615 Float_t phi = myP->Phi();
616 Float_t deta = fJetEta-eta;
617 Float_t dphi = fJetPhi -phi;
619 if ((deta*deta) + (dphi*dphi)>1.e-7)
621 rad = TMath::Sqrt( (deta*deta) + (dphi*dphi) );
629 pTArray[index] = myP->Pt();
630 //Calculate track contribution within jetcone
631 trackEnergy += myP->Pt();
632 if(myP->Pt() >= fPtCut) trackEnergyPtCut += myP->Pt();
633 etaArray[index] = eta;
634 phiArray[index] = phi;
635 pdgArray[index] = myP->GetPdgCode();
639 Double_t fullP = myP->P();
640 Double_t hCEnergy = fHadCorr->GetEnergy(fullP, (Double_t)eta);
641 emcalEnergy -= hCEnergy*TMath::Sin(myP->Theta());
642 emcalEnergyBGSub -= hCEnergy*TMath::Sin(myP->Theta());
643 } //end Hadron Correction loop
648 //Loop over digits to find EMCal contribution within jetcone
649 for(Int_t counter3=0; counter3<numberDigits; counter3++)
651 myD = fInputPointer->GetDigit(counter3);
652 //GET DIGIT ETA, PHI so that can check if inside R!
655 Int_t iID = myD->GetId();
656 geom->EtaPhiFromIndex(iID, eta, phi);
657 Float_t deta = fJetEta-eta;
658 Float_t dphi = fJetPhi -(TMath::Pi()/180.0)*phi;
659 //Float_t rad = TMath::Sqrt( (deta*deta) + (dphi*dphi));
661 if ((deta*deta) + (dphi*dphi)>1.e-7)
663 rad = TMath::Sqrt( (deta*deta) + (dphi*dphi) );
671 Int_t amplitude = myD->GetAmp(); //Gets the integer valued amplitude of the digit
672 Float_t amp = (Float_t)amplitude; //Need to typecast to Float_t before doing real energy conversion
673 Float_t digitEnergy = amp/10000000.0; //Factor of 10 million needed to convert!
674 emcalEnergy += digitEnergy;
675 emcalEnergyBGSub += (digitEnergy - fEBGAve);
680 jet.SetTrackList(numTracksInCone,pTArray, etaArray, phiArray, pdgArray);
681 jet.SetEMCALEnergy(emcalEnergy);
682 jet.SetEMCALEnergyBGSub(emcalEnergyBGSub);
683 jet.SetTrackEnergy(trackEnergy);
684 jet.SetTrackEnergyPtCut(trackEnergyPtCut);
685 fOutputPointer->AddJet(&jet);
693 void AliEMCALJetFinderAlgoOmni::FindJets()
695 //Runs the complete UA1 JetFinding algorithm to find jets!
696 if (fDebug>1) Info("FindJets","Starting Jet Finding!!!");
698 //If the array of JetFinderUnit objects has not been initialised then initialise with default settings
699 if(!fArrayInitialised)
702 FillUnitArray(kFillAll);
704 if (fDebug>1) Info("FindJets","Unit array filled");
706 //Step 1. Sort the array in descending order of Energy
707 Sort(fUnit,fNumUnits);
709 //Step 2. Set the number of iterations and Number of jets found to zero to start
713 //Step 3. Begin the iteration loop to find jets
714 //Need to iterate the algorithm while number of iterations<2 OR number of iterations<10 AND
715 //the value of the average background has changed more than specified amount
716 //Min iterations = 2, Max iterations = 10
717 //while(fNumIter<2 || (fNumIter <10 && ( (fEBGTotal-fEBGTotalOld)/fEBGTotal) > fBGMaxMove) )
719 while(fNumIter<2 || (fNumIter <10 && ( fEBGTotal-fEBGTotalOld) > fEBGTotal*fBGMaxMove) )
721 if (fDebug>1) Info("FindJets","Starting BIG iteration ---> %i",fNumIter);
723 //Step 4. Find the value of the average background energy
725 fOutputPointer->Reset(kResetJets); //Reset output object to store info for new iteration
728 //Loop over the array of unit objects and flag those with energy below MinCellEt
730 for(Int_t j=0; j<fNumUnits; j++)
732 if( (fUnit[j].GetUnitEnergy()-fEBGAve) < fEtMin)
734 // fUnit[j].SetUnitFlag(kBelowMinEt); TAKING OUT kBelow flag
738 //cout<<"THERE WERE "<<numbelow<<" units with E <EtMin!!!!!!!!!!!!!!!"<<endl;
740 //Do quick check if there are no jets upfront
741 // if(fUnit[0].GetUnitFlag() == kBelowMinEt)
742 if( (fUnit[0].GetUnitEnergy()-fEBGAve) < fEtMin)
744 cout <<"There are no jets for this event!" <<endl;
748 //Step 5. Begin with the first jet candidate cell (JET SEED LOOP)
749 if (fDebug>5) Info("FindJets","Beginning JET SEED LOOP");
750 for(Int_t count=0; count<fNumUnits; count++)
753 //CHECK CONDITION HERE _ NOT SURE IF SHOULD MAYBE BE: GetUnitEnergy()-fEBGAve >fESeed?????????????????????????????
754 if(fUnit[count].GetUnitEnergy()>=fESeed && fUnit[count].GetUnitFlag()==kOutJet)
756 fEnergy = fUnit[count].GetUnitEnergy() - fEBGAve;
757 fJetEta = fUnit[count].GetUnitEta();
758 fJetPhi = fUnit[count].GetUnitPhi();
759 Int_t seedID = fUnit[count].GetUnitID();
760 if (fDebug>5) Info("FindJets","Inside first candidate jet seed loop for time : %i", count);
761 if (fDebug>5) Info("FindJets","Found candidate energy %f ",fEnergy);
762 if (fDebug>5) Info("FindJets","Found candidate eta %f ", fJetEta);
763 if (fDebug>5) Info("FindJets","Found candidate phi %f ", fJetPhi);
764 if (fDebug>5) Info("FindJets","Found candidate ID %i", seedID);
777 //Step 6. Find Jet Eta and Phi
778 //Loop over all units in the array to find the ones in the jet cone and determine contrib to Jet eta, phi
779 for(Int_t count1=0; count1<fNumUnits; count1++)
781 if(fUnit[count1].GetUnitID() == seedID && testflag)
784 continue; //skip unit if the jetseed to avoid doublecounting
786 if(fUnit[count1].GetUnitFlag() == kOutJet)
788 fDEta = fUnit[count1].GetUnitEta() - fJetEta;
789 fDPhi = fUnit[count1].GetUnitPhi() - fJetPhi;
790 if ( (fDEta*fDEta) + (fDPhi*fDPhi) >1.e-7)
792 fRad = TMath::Sqrt( (fDEta*fDEta) + (fDPhi*fDPhi) );
799 FindJetEtaPhi(count1);
802 }//end for (Jet Eta, Phi LOOP)
804 //Find the distance cone centre moved from previous cone centre
805 if (fDebug>10) Info("FindJets","Checking if cone move small enough");
806 if (((fJetEta-fEtaB)*(fJetEta-fEtaB)) + ((fJetPhi-fPhiB)*(fJetPhi-fPhiB)) >1.e-7)
808 fDistP = TMath::Sqrt( ((fJetEta-fEtaB)*(fJetEta-fEtaB)) + ((fJetPhi-fPhiB)*(fJetPhi-fPhiB)) );
813 // if(fDistP <= fMinMove) break;
816 //Find the distance cone centre is from initiator cell
817 if (fDebug>10) Info("FindJets","Checking if cone move too large");
818 if ( ((fJetEtaSum)*(fJetEtaSum))+((fJetPhiSum)*(fJetPhiSum)) >1.e-7)
820 fDistI = TMath::Sqrt( ((fJetEtaSum/fJetESum)*(fJetEtaSum/fJetESum)) + ((fJetPhiSum/fJetESum)*
821 (fJetPhiSum/fJetESum)));
827 if(fDistP>fMinMove && fDistI<fMaxMove)
833 }while(fDistP>fMinMove && fDistI<fMaxMove);
839 //Step 7. Find the Jet Energy
840 if (fDebug>1) Info("FindJets","Looking for Jet energy");
847 //cout<<"Number of cells in jet cone is: "<<fNumInCone<<endl;
849 //Step 8. Check if the jet is a valid jet
850 //Check if cluster energy is above Min allowed to be a jet
851 //DID NOT DO THE COSH COMPARISON HERE -> NEED TO CHECK WHICH COMPARISON IS BEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
852 if (fDebug>5) Info("FindJets","Checking cluster is valid jet");
853 if(fJetESum < fJetEMin)
855 for(Int_t count2=0; count2<fNumUnits; count2++)
857 if(fUnit[count2].GetUnitFlag()==kInCurrentJet || fUnit[count2].GetUnitFlag()==kOutJet)
858 fUnit[count2].SetUnitFlag(kOutJet);
860 if (fDebug>10) Info("FindJets","NOT a valid jet cell");
863 for(Int_t count2=0; count2<fNumUnits; count2++)
865 if(fUnit[count2].GetUnitFlag()==kInCurrentJet)
867 // cout<<"Setting unit #"<<count2 <<" to be officially in a jet!"<<endl;
868 fUnit[count2].SetUnitFlag(kInJet);
872 //NEED TO CHECK FINAL WEIRD ITERATION OF ETA AND PHI CHANGES!!!!!!!!!
873 // fJetPhi += fJetPhiSum/fJetESum; //CHECK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
874 // fJetEta += fJetEtaSum/fJetESum; //CHECK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
876 fNumJets++; //Incrementing number of jets found
877 StoreJetInfo(); //Storing jet info
879 }//end if (check cluster above Min Jet Energy)
880 }//end if (Jet Seed condition)
881 }//end (JET SEED LOOP)
883 if (fDebug>5) Info("FindJets","End of BIG iteration number %i",fNumIter);
886 }//end 10 iteration WHILE LOOP