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 1.13 2004/03/26 01:00:38 mhorner
24 Implementing Marco's optimisations
26 Revision 1.12 2004/03/15 19:59:37 mhorner
27 Pyhtia comparison extended
29 Revision 1.11 2004/03/09 17:06:38 mhorner
32 Revision 1.10 2004/03/06 01:56:09 mhorner
35 Revision 1.9 2004/02/23 20:37:32 mhorner
38 Revision 1.8 2004/01/29 23:28:44 mhorner
39 Jet Finder - hard coded geom parameters removed
41 Revision 1.7 2004/01/21 22:27:47 mhorner
42 Cleaning up coding conventions
44 Revision 1.6 2003/10/28 13:54:30 schutz
45 Compilation warnings fixed
47 Revision 1.5 2003/09/23 13:31:41 mhorner
48 Changed coordinate system
50 Revision 1.4 2003/09/19 13:16:20 mhorner
51 Added additional jet energy info
54 Revision 1.3 2003/09/04 12:49:56 mhorner
55 Changed hadron correction and added saving EMCAL and track contributions
60 //*--Author: Sarah Blyth (LBL)
61 //*--Based on UA1 jet algorithm from LUND JETSET called from EMC-erj
64 #include "AliEMCALJetFinderInput.h"
65 #include "AliEMCALJetFinderOutput.h"
66 #include "AliEMCALJetFinderAlgo.h"
67 #include "AliEMCALJetFinderAlgoOmni.h"
68 #include "AliEMCALJetFinderAlgoUA1Unit.h"
69 #include "AliEMCALGetter.h"
70 #include "AliEMCALGeometry.h"
72 #include "AliEMCALDigit.h"
73 #include "TParticle.h"
75 #include "AliEMCALJet.h"
79 ClassImp(AliEMCALJetFinderAlgoOmni)
81 AliEMCALJetFinderAlgoOmni::AliEMCALJetFinderAlgoOmni()
84 if (fDebug>0) Info("AliEMCALJetFinderAlgoOmni","Beginning Default Constructor");
86 // AliEMCALGetter * gime = AliEMCALGetter::Instance() ;
87 // AliEMCALGeometry * geom = gime->EMCALGeometry();
88 AliEMCALGeometry * geom = AliEMCALGeometry::GetInstance("EMCAL_55_25","EMCAL");
90 fNumUnits = geom->GetNTowers(); //Number of towers in EMCAL
91 fESeed = 5.0; //Default value
92 fConeRad = 0.3; //Default value
93 fJetEMin = 10.0; //Default value
94 fEtMin = 0.0; //Default value
95 fMinMove = 0.05; //From original UA1 JetFinder
96 fMaxMove = 0.15; //From original UA1 JetFinder
97 fBGMaxMove = 0.035; //From original UA1 JetFinder
100 fEBGTotal = 1.0; //Set to 1 so that no div by zero in first FindJets() loop
118 fRad = 2.0; //Set to 2 to start
121 fArrayInitialised = 0; //Set to FALSE to start
122 fBGType = kRatio; //Set Ratio method as default BG subtraction method
123 fBGPar = -1.0; //Set to 1 to start
126 AliEMCALJetFinderAlgoOmni::~AliEMCALJetFinderAlgoOmni()
129 if (fDebug>0) Info("AliEMCALJetFinderAlgoOmni","Beginning Destructor");
131 delete[] fUnitNoCuts;
134 void AliEMCALJetFinderAlgoOmni::SetJetFindingParameters
135 (Int_t numUnits, Float_t eSeed, Float_t coneRad, Float_t jetEMin, Float_t etMin,
136 Float_t minMove, Float_t maxMove, Float_t bgMaxMove)
138 //Sets parameters for the JetFinding algorithm
139 if (fDebug>1) Info("SetJetFindingParameters","Setting parameters for JetFinding");
141 SetNumUnits(numUnits);
148 SetBGMaxMove(bgMaxMove);
151 void AliEMCALJetFinderAlgoOmni::SetJetFindingParameters
152 (Int_t numUnits, Float_t eSeed, Float_t coneRad, Float_t jetEMin, Float_t etMin)
154 //Sets fewer parameters for the JetFinding algorithm
155 if (fDebug>1) Info("SetJetFindingParameters","Setting parameters for JetFinding");
157 SetNumUnits(numUnits);
162 SetMinMove(fMinMove);
163 SetMaxMove(fMaxMove);
164 SetBGMaxMove(fBGMaxMove);
167 void AliEMCALJetFinderAlgoOmni::InitUnitArray()
169 //Initialises unit arrays
170 if(fArrayInitialised) delete [] fUnit;
171 if(fArrayInitialised) delete [] fUnitNoCuts;
172 fUnit = new AliEMCALJetFinderAlgoUA1Unit[fNumUnits];
173 fUnitNoCuts = new AliEMCALJetFinderAlgoUA1Unit[fNumUnits];
174 fArrayInitialised = 1;
177 void AliEMCALJetFinderAlgoOmni::FillUnitArray(AliEMCALJetFinderAlgoUA1FillUnitFlagType_t flag)
179 // Fill the unit array
180 if (fDebug>1) Info("FillUnitArray","Beginning FillUnitArray");
181 // AliEMCAL* pEMCAL = (AliEMCAL*) gAlice->GetModule("EMCAL");
183 // AliEMCALGeometry* geom = AliEMCALGeometry::GetInstance(pEMCAL->GetTitle(), "");
187 AliEMCALGetter * gime = AliEMCALGetter::Instance() ;
188 AliEMCALGeometry * geom;
190 geom = gime->EMCALGeometry();
192 geom = AliEMCALGeometry::GetInstance("EMCAL_55_25","EMCAL");
196 AliEMCALJetFinderAlgoUA1FillUnitFlagType_t option = flag;
197 Int_t numTracks, numDigits;
199 //Loops over all elements in the AliEMCALJetFinderAlgoUA1Unit array and
200 //fills the objects with relevant values from the Data Input object
201 if (fDebug>10) Info("FillUnitArray","Filling array with Unit objects");
202 if (fDebug>15) Info("FillUnitArray","NTracks %i NDigits %i",fInputPointer->GetNTracks(),fInputPointer->GetNDigits());
203 numTracks = fInputPointer->GetNTracks();
204 numDigits = fInputPointer->GetNDigits();
206 AliEMCALDigit *myDigit;
207 if (!fPythiaComparison)
209 //Fill units with Track info if appropriate
210 if(option==kFillTracksOnly || option ==kFillAll)
212 for(Int_t j=0; j<numTracks; j++)
214 myPart = fInputPointer->GetTrack(j);
215 Float_t eta = myPart->Eta();
216 Float_t phi = myPart->Phi();
217 Int_t towerID = geom->TowerIndexFromEtaPhi(eta,180.0/TMath::Pi()*phi);
218 Float_t pT = myPart->Pt();
219 Float_t unitEnergy = fUnit[towerID-1].GetUnitEnergy();
220 Float_t unitEnergyNoCuts = fUnitNoCuts[towerID-1].GetUnitEnergy();
223 //OLD WAY: //Do Hadron Correction
226 Double_t fullP = myPart->P();
227 Double_t hCEnergy = fHadCorr->GetEnergy(fullP, (Double_t)eta);
228 unitEnergy -= hCEnergy*TMath::Sin(myPart->Theta());
229 unitEnergyNoCuts -= hCEnergy*TMath::Sin(myPart->Theta());
230 fUnit[towerID-1].SetUnitEnergy(unitEnergy);
231 fUnitNoCuts[towerID-1].SetUnitEnergy(unitEnergyNoCuts);
232 } //end Hadron Correction loop
236 //Do Hadron Correction with propagate phi for the track
241 TParticlePDG *pdg = myPart->GetPDG();
242 if(pdg->Charge() < 0)
244 deltaPhi = PropagatePhi(myPart->Pt(), -1.0, curl);
247 deltaPhi = PropagatePhi(myPart->Pt(), 1.0, curl);
250 //Get new tower id for cell that track would curve into
252 if(phi>(TMath::Pi()/180.0)*geom->GetArm1PhiMax() || phi<(TMath::Pi()/180.0)*geom->GetArm1PhiMin())
257 towerID2 = geom->TowerIndexFromEtaPhi(eta,180.0/TMath::Pi()*phi);
262 //Find unit energy of new tower
263 Float_t unitEnergy2 = fUnit[towerID2-1].GetUnitEnergy();
264 Float_t unitEnergy2NoCuts = fUnitNoCuts[towerID2-1].GetUnitEnergy();
265 Double_t fullP = myPart->P();
266 Double_t hCEnergy = fHadCorr->GetEnergy(fullP, (Double_t)eta);
267 unitEnergy2 -= hCEnergy*TMath::Sin(myPart->Theta());
268 unitEnergy2NoCuts -= hCEnergy*TMath::Sin(myPart->Theta());
269 fUnit[towerID2-1].SetUnitEnergy(unitEnergy2);
270 fUnitNoCuts[towerID2-1].SetUnitEnergy(unitEnergy2NoCuts);
271 }//end if for towerID2
272 }//end Hadron Correction loop
275 fUnitNoCuts[towerID-1].SetUnitEnergy(unitEnergyNoCuts + pT);
276 //Do Pt cut on tracks
277 if(fPtCut != 0 && pT < fPtCut) continue;
279 fUnit[towerID-1].SetUnitEnergy(unitEnergy+pT);
282 }//end Tracks condition
285 //Fill units with Digit info if appropriate
286 if(option ==kFillDigitsOnly || option ==kFillAll)
288 for(Int_t k=0; k<numDigits; k++)
290 myDigit = fInputPointer->GetDigit(k);
291 if (fDebug>10) Info("FillUnitArray","getting digits %i %i numdigits",k,numDigits );
292 Int_t towerID = myDigit->GetId();
293 Int_t amplitude = myDigit->GetAmp(); //Gets the integer valued amplitude of the digit
294 Float_t amp = (Float_t)amplitude; //Need to typecast to Float_t before doing real energy conversion
295 Float_t digitEnergy = amp/10000000.0; //Factor of 10 million needed to convert!
296 Float_t unitEnergy = fUnit[towerID-1].GetUnitEnergy() + digitEnergy;
297 Float_t unitEnergyNoCuts = fUnitNoCuts[towerID-1].GetUnitEnergy() + digitEnergy;
298 fUnit[towerID-1].SetUnitEnergy(unitEnergy);
299 fUnitNoCuts[towerID-1].SetUnitEnergy(unitEnergyNoCuts);
301 }//end digits condition
303 //Set all unit flags, Eta, Phi
304 for(Int_t i=0; i<fNumUnits; i++)
306 if (fDebug>10) Info("FillUnitArray","Setting all units outside jets");
307 //Set all units to be outside a jet initially
308 fUnit[i].SetUnitFlag(kOutJet);
309 fUnit[i].SetUnitID(i+1);
312 geom->EtaPhiFromIndex(fUnit[i].GetUnitID(), eta, phi);
313 fUnit[i].SetUnitEta(eta);
314 fUnit[i].SetUnitPhi(phi*TMath::Pi()/180.0);
315 //Set all units to be outside a jet initially
316 fUnitNoCuts[i].SetUnitFlag(kOutJet);
317 fUnitNoCuts[i].SetUnitID(i+1);
320 geom->EtaPhiFromIndex(fUnitNoCuts[i].GetUnitID(), eta, phi);
321 fUnitNoCuts[i].SetUnitEta(eta);
322 fUnitNoCuts[i].SetUnitPhi(phi*TMath::Pi()/180.0);
323 // if(i>13000) cout<<"!!!!!!!!!!!!!!!!!For unit0, eta="<<eta<<" and phi="<<phi*TMath::Pi()/180.0<<" and ID="<<fUnit[i].GetUnitID()<<endl;
324 // 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;
325 }//end loop over all units in array (same as all towers in EMCAL)
328 if (fPythiaComparison)
330 for(Int_t j=0; j<numTracks; j++)
332 myPart = fInputPointer->GetTrack(j);
333 fUnit[j].SetUnitID(j);
334 fUnit[j].SetUnitFlag(kOutJet);
335 fUnit[j].SetUnitEta(myPart->Eta());
336 fUnit[j].SetUnitPhi(myPart->Phi());
337 if (myPart->Energy()*TMath::Sin(myPart->Theta()) > fPtCut)
339 fUnit[j].SetUnitEnergy(myPart->Energy()*TMath::Sin(myPart->Theta()));
342 fUnit[j].SetUnitEnergy(0.00);
344 fUnitNoCuts[j].SetUnitID(j);
345 fUnitNoCuts[j].SetUnitFlag(kOutJet);
346 fUnitNoCuts[j].SetUnitEta(myPart->Eta());
347 fUnitNoCuts[j].SetUnitPhi(myPart->Phi());
348 fUnitNoCuts[j].SetUnitEnergy(myPart->Energy()*TMath::Sin(myPart->Theta()));
350 for(Int_t k=numTracks; k < fNumUnits; k++)
352 fUnit[k].SetUnitID(k);
353 fUnit[k].SetUnitFlag(kBelowMinEt);
354 fUnit[k].SetUnitEta(0.0);
355 fUnit[k].SetUnitPhi(0.0);
356 fUnit[k].SetUnitEnergy(0.0);
357 fUnitNoCuts[k].SetUnitID(k);
358 fUnitNoCuts[k].SetUnitFlag(kBelowMinEt);
359 fUnitNoCuts[k].SetUnitEta(0.0);
360 fUnitNoCuts[k].SetUnitPhi(0.0);
361 fUnitNoCuts[k].SetUnitEnergy(0.0);
370 void AliEMCALJetFinderAlgoOmni::Sort(AliEMCALJetFinderAlgoUA1Unit *unit, Int_t length)
372 //Calls the recursive quicksort method to sort unit objects in decending order of Energy
373 if (fDebug>1) Info("Sort","Sorting Unit objects");
374 QS(unit, 0, length-1);
378 void AliEMCALJetFinderAlgoOmni::QS(AliEMCALJetFinderAlgoUA1Unit *unit, Int_t left, Int_t right)
380 //Sorts the AliEMCALJetFinderAlgoUA1Unit objects in decending order of Energy
381 if (fDebug>111) Info("QS","QuickSorting Unit objects");
385 AliEMCALJetFinderAlgoUA1Unit unitFirst;
386 AliEMCALJetFinderAlgoUA1Unit unitSecond;
390 unitFirst = unit[(left+right)/2];
394 while( (unit[i].GetUnitEnergy() > unitFirst.GetUnitEnergy()) && (i < right)) i++;
395 while( (unitFirst.GetUnitEnergy() > unit[j].GetUnitEnergy()) && (j > left)) j--;
399 unitSecond = unit[i];
401 unit[j] = unitSecond;
407 if(left < j) QS(unit, left, j);
408 if(i < right) QS(unit, i, right);
412 void AliEMCALJetFinderAlgoOmni::FindBG()
414 if(fBGType == kRatio) RatioBG();
415 else if(fBGType == kCone) ConeBG();
416 else if(fBGType == kConstant) ConstantBG();
419 void AliEMCALJetFinderAlgoOmni::RatioBG()
421 //Finds the background energy for the iteration
422 //using the Ratio method
423 if (fDebug>1) Info("FindBG","Finding Average Background");
424 //Store BGEperCell from previous iteration!
425 fEBGTotalOld = fEBGTotal;
429 //If user has not set fBGPar, set it to the default
430 //for TPC = 90% efficiency, PtCut = 2GeV/c, timecut = 30ns
431 if(fBGPar == -1) fBGPar = 0.4685;
433 //Loop over all unit objects in the Unit array and link to same
434 //unit ID in NoCuts Unit array
435 for(Int_t i=0; i<fNumUnits; i++)
437 if(fUnit[i].GetUnitFlag() != kInJet)
439 Int_t id = fUnit[i].GetUnitID();
440 fEBGTotal += fUnitNoCuts[id-1].GetUnitEnergy();
446 fEBGAve = fEBGTotal / (fNumUnits - numCone);
447 if (fDebug>5) Info("FindBG","Average BG is %f: ",fEBGAve);
449 for(Int_t count=0; count<fNumUnits;count++)
451 fUnit[count].SetUnitFlag(kOutJet);
455 void AliEMCALJetFinderAlgoOmni::ConeBG()
457 //Finds the background energy for the iteration
458 //using all energy not contained inside a jet
459 if (fDebug>1) Info("FindBG","Finding Average Background");
460 //Store old value of BGEperCell!
461 fEBGTotalOld = fEBGTotal;
465 //Loop over all unit objects in the array and sum the energy of those not in a jet
466 for(Int_t i=0; i<fNumUnits; i++)
468 if(fUnit[i].GetUnitFlag() != kInJet)
469 fEBGTotal += fUnit[i].GetUnitEnergy();
473 fEBGAve = fEBGTotal / (fNumUnits - numCone);
474 if (fDebug>5) Info("FindBG","Average BG is %f: ",fEBGAve);
476 for(Int_t count=0; count<fNumUnits;count++)
478 fUnit[count].SetUnitFlag(kOutJet);
482 void AliEMCALJetFinderAlgoOmni::ConstantBG()
484 //Finds the background energy for the iteration
485 //using all energy not contained inside a jet
486 if (fDebug>1) Info("FindBG","Finding Average Background");
488 //If user has not set fBGPar, set it to the default
489 //for TPC = 90% efficiency, PtCut = 2GeV/c, timecut = 30ns
490 if(fBGPar == -1) fBGPar = 0.03378;
493 if (fDebug>5) Info("FindBG","Average BG is %f: ",fEBGAve);
497 for(Int_t count=0; count<fNumUnits;count++)
499 if(fUnit[count].GetUnitFlag() == kInJet)
503 fUnit[count].SetUnitFlag(kOutJet);
505 fEBGTotal = fEBGAve * (fNumUnits-numCone);
506 fEBGTotalOld = fEBGTotal;
509 void AliEMCALJetFinderAlgoOmni::FindJetEtaPhi(Int_t counter)
511 //Finds the eta and phi of the jet axis
512 if (fDebug>10) Info("FindJetEtaPhi","Finding Jet Eta and Phi");
514 fDEta = fUnit[counter].GetUnitEta() - fEtaInit;
515 fDPhi = fUnit[counter].GetUnitPhi() - fPhiInit;
517 fEnergy = fUnit[counter].GetUnitEnergy() - fEBGAve;
518 fJetEtaSum += fEnergy * fDEta;
519 fJetPhiSum += fEnergy * fDPhi;
521 if (fJetESum >1.0e-7)
523 fJetEta = fEtaInit + (fJetEtaSum / fJetESum);
524 fJetPhi = fPhiInit + (fJetPhiSum / fJetESum);
529 void AliEMCALJetFinderAlgoOmni::FindJetEnergy()
531 //Finds the energy of the jet after the final axis has been found
532 if (fDebug>1) Info("FindJetEnergy","Finding Jet Energy");
534 for(Int_t i=0; i<fNumUnits; i++)
536 //Loop over all unit objects in the array and find if within cone radius
537 Float_t dEta = fUnit[i].GetUnitEta() - fJetEta;
538 Float_t dPhi = fUnit[i].GetUnitPhi() - fJetPhi;
540 if ((dEta*dEta) + (dPhi*dPhi)>1.e-7)
542 rad = TMath::Sqrt( (dEta*dEta) + (dPhi*dPhi) );
548 if(fUnit[i].GetUnitFlag()==kOutJet && rad<= fConeRad)
550 fUnit[i].SetUnitFlag(kInCurrentJet);
551 Float_t energy = fUnit[i].GetUnitEnergy() - fEBGAve;
553 fJetEtaSum += energy * dEta;
554 fJetPhiSum += energy * dPhi;
555 fNumInCone++; //Increment the number of cells in the jet cone
561 void AliEMCALJetFinderAlgoOmni::StoreJetInfo()
563 //Stores the resulting jet information in appropriate storage structure (TO BE DECIDED!!!!)
564 if (fDebug>1) Info("StoreJetInfo","Storing Jet Information");
565 AliEMCALGetter * gime = AliEMCALGetter::Instance() ;
566 AliEMCALGeometry * geom;
568 geom = gime->EMCALGeometry();
570 geom = AliEMCALGeometry::GetInstance("EMCAL_55_25","EMCAL");
572 //fJetESum is the final jet energy (background has been subtracted)
573 //fJetEta is the final jet Eta
574 //fJetPhi is the final jet Phi
575 //fNumInCone is the final number of cells included in the jet cone
576 //fEtaInit is the eta of the initiator cell
577 //fPhiInit is the phi of the initiator cell
579 AliEMCALJet jet(fJetESum,fJetPhi,fJetEta);
581 cout<<"For iteration "<<fNumIter <<" and Jet number " <<fNumJets <<endl;
582 cout<<"The jet energy is: " <<fJetESum <<endl;
583 cout<<"The jet eta is ---->" <<fJetEta <<endl;
584 cout<<"The jet phi is ---->" <<fJetPhi <<endl;
586 Int_t numberTracks = fInputPointer->GetNTracks();
587 Int_t numberDigits = fInputPointer->GetNDigits();
590 Int_t numTracksInCone = 0;
591 Float_t trackEnergy = 0.0;
592 Float_t trackEnergyPtCut =0.0;
593 Float_t emcalEnergy = 0.0;
594 Float_t emcalEnergyBGSub = 0.0;
596 for(Int_t counter=0; counter<numberTracks; counter++)
598 myP = fInputPointer->GetTrack(counter);
599 Float_t eta = myP->Eta();
600 Float_t phi = myP->Phi();
601 Float_t deta = fJetEta-eta;
602 Float_t dphi = fJetPhi -phi;
603 Float_t rad = TMath::Sqrt( (deta*deta) + (dphi*dphi));
604 if(rad<=fConeRad) numTracksInCone++;
607 Float_t *pTArray = new Float_t[numTracksInCone];
608 Float_t *etaArray = new Float_t[numTracksInCone];
609 Float_t *phiArray = new Float_t[numTracksInCone];
610 Int_t *pdgArray = new Int_t[numTracksInCone];
613 for(Int_t counter2=0; counter2<numberTracks; counter2++)
615 myP = fInputPointer->GetTrack(counter2);
616 Float_t eta = myP->Eta();
617 Float_t phi = myP->Phi();
618 Float_t deta = fJetEta-eta;
619 Float_t dphi = fJetPhi -phi;
621 if ((deta*deta) + (dphi*dphi)>1.e-7)
623 rad = TMath::Sqrt( (deta*deta) + (dphi*dphi) );
631 pTArray[index] = myP->Pt();
632 //Calculate track contribution within jetcone
633 trackEnergy += myP->Pt();
634 if(myP->Pt() >= fPtCut) trackEnergyPtCut += myP->Pt();
635 etaArray[index] = eta;
636 phiArray[index] = phi;
637 pdgArray[index] = myP->GetPdgCode();
641 Double_t fullP = myP->P();
642 Double_t hCEnergy = fHadCorr->GetEnergy(fullP, (Double_t)eta);
643 emcalEnergy -= hCEnergy*TMath::Sin(myP->Theta());
644 emcalEnergyBGSub -= hCEnergy*TMath::Sin(myP->Theta());
645 } //end Hadron Correction loop
650 //Loop over digits to find EMCal contribution within jetcone
651 for(Int_t counter3=0; counter3<numberDigits; counter3++)
653 myD = fInputPointer->GetDigit(counter3);
654 //GET DIGIT ETA, PHI so that can check if inside R!
657 Int_t iID = myD->GetId();
658 geom->EtaPhiFromIndex(iID, eta, phi);
659 Float_t deta = fJetEta-eta;
660 Float_t dphi = fJetPhi -(TMath::Pi()/180.0)*phi;
661 //Float_t rad = TMath::Sqrt( (deta*deta) + (dphi*dphi));
663 if ((deta*deta) + (dphi*dphi)>1.e-7)
665 rad = TMath::Sqrt( (deta*deta) + (dphi*dphi) );
673 Int_t amplitude = myD->GetAmp(); //Gets the integer valued amplitude of the digit
674 Float_t amp = (Float_t)amplitude; //Need to typecast to Float_t before doing real energy conversion
675 Float_t digitEnergy = amp/10000000.0; //Factor of 10 million needed to convert!
676 emcalEnergy += digitEnergy;
677 emcalEnergyBGSub += (digitEnergy - fEBGAve);
682 jet.SetTrackList(numTracksInCone,pTArray, etaArray, phiArray, pdgArray);
683 jet.SetEMCALEnergy(emcalEnergy);
684 jet.SetEMCALEnergyBGSub(emcalEnergyBGSub);
685 jet.SetTrackEnergy(trackEnergy);
686 jet.SetTrackEnergyPtCut(trackEnergyPtCut);
687 fOutputPointer->AddJet(&jet);
695 void AliEMCALJetFinderAlgoOmni::FindJets()
697 //Runs the complete UA1 JetFinding algorithm to find jets!
698 if (fDebug>1) Info("FindJets","Starting Jet Finding!!!");
700 //If the array of JetFinderUnit objects has not been initialised then initialise with default settings
701 if(!fArrayInitialised)
704 FillUnitArray(kFillAll);
706 if (fDebug>1) Info("FindJets","Unit array filled");
708 //Step 1. Sort the array in descending order of Energy
709 Sort(fUnit,fNumUnits);
711 //Step 2. Set the number of iterations and Number of jets found to zero to start
715 //Step 3. Begin the iteration loop to find jets
716 //Need to iterate the algorithm while number of iterations<2 OR number of iterations<10 AND
717 //the value of the average background has changed more than specified amount
718 //Min iterations = 2, Max iterations = 10
719 //while(fNumIter<2 || (fNumIter <10 && ( (fEBGTotal-fEBGTotalOld)/fEBGTotal) > fBGMaxMove) )
721 while(fNumIter<2 || (fNumIter <10 && ( fEBGTotal-fEBGTotalOld) > fEBGTotal*fBGMaxMove) )
723 if (fDebug>1) Info("FindJets","Starting BIG iteration ---> %i",fNumIter);
725 //Step 4. Find the value of the average background energy
727 fOutputPointer->Reset(kResetJets); //Reset output object to store info for new iteration
730 //Loop over the array of unit objects and flag those with energy below MinCellEt
732 for(Int_t j=0; j<fNumUnits; j++)
734 if( (fUnit[j].GetUnitEnergy()-fEBGAve) < fEtMin)
736 // fUnit[j].SetUnitFlag(kBelowMinEt); TAKING OUT kBelow flag
740 //cout<<"THERE WERE "<<numbelow<<" units with E <EtMin!!!!!!!!!!!!!!!"<<endl;
742 //Do quick check if there are no jets upfront
743 // if(fUnit[0].GetUnitFlag() == kBelowMinEt)
744 if( (fUnit[0].GetUnitEnergy()-fEBGAve) < fEtMin)
746 cout <<"There are no jets for this event!" <<endl;
750 //Step 5. Begin with the first jet candidate cell (JET SEED LOOP)
751 if (fDebug>5) Info("FindJets","Beginning JET SEED LOOP");
752 for(Int_t count=0; count<fNumUnits; count++)
755 //CHECK CONDITION HERE _ NOT SURE IF SHOULD MAYBE BE: GetUnitEnergy()-fEBGAve >fESeed?????????????????????????????
756 if(fUnit[count].GetUnitEnergy()>=fESeed && fUnit[count].GetUnitFlag()==kOutJet)
758 fEnergy = fUnit[count].GetUnitEnergy() - fEBGAve;
759 fJetEta = fUnit[count].GetUnitEta();
760 fJetPhi = fUnit[count].GetUnitPhi();
761 Int_t seedID = fUnit[count].GetUnitID();
762 if (fDebug>5) Info("FindJets","Inside first candidate jet seed loop for time : %i", count);
763 if (fDebug>5) Info("FindJets","Found candidate energy %f ",fEnergy);
764 if (fDebug>5) Info("FindJets","Found candidate eta %f ", fJetEta);
765 if (fDebug>5) Info("FindJets","Found candidate phi %f ", fJetPhi);
766 if (fDebug>5) Info("FindJets","Found candidate ID %i", seedID);
779 //Step 6. Find Jet Eta and Phi
780 //Loop over all units in the array to find the ones in the jet cone and determine contrib to Jet eta, phi
781 for(Int_t count1=0; count1<fNumUnits; count1++)
783 if(fUnit[count1].GetUnitID() == seedID && testflag)
786 continue; //skip unit if the jetseed to avoid doublecounting
788 if(fUnit[count1].GetUnitFlag() == kOutJet)
790 fDEta = fUnit[count1].GetUnitEta() - fJetEta;
791 fDPhi = fUnit[count1].GetUnitPhi() - fJetPhi;
792 if ( (fDEta*fDEta) + (fDPhi*fDPhi) >1.e-7)
794 fRad = TMath::Sqrt( (fDEta*fDEta) + (fDPhi*fDPhi) );
801 FindJetEtaPhi(count1);
804 }//end for (Jet Eta, Phi LOOP)
806 //Find the distance cone centre moved from previous cone centre
807 if (fDebug>10) Info("FindJets","Checking if cone move small enough");
808 if (((fJetEta-fEtaB)*(fJetEta-fEtaB)) + ((fJetPhi-fPhiB)*(fJetPhi-fPhiB)) >1.e-7)
810 fDistP = TMath::Sqrt( ((fJetEta-fEtaB)*(fJetEta-fEtaB)) + ((fJetPhi-fPhiB)*(fJetPhi-fPhiB)) );
815 // if(fDistP <= fMinMove) break;
818 //Find the distance cone centre is from initiator cell
819 if (fDebug>10) Info("FindJets","Checking if cone move too large");
820 if ( ((fJetEtaSum)*(fJetEtaSum))+((fJetPhiSum)*(fJetPhiSum)) >1.e-7)
822 fDistI = TMath::Sqrt( ((fJetEtaSum/fJetESum)*(fJetEtaSum/fJetESum)) + ((fJetPhiSum/fJetESum)*
823 (fJetPhiSum/fJetESum)));
829 if(fDistP>fMinMove && fDistI<fMaxMove)
835 }while(fDistP>fMinMove && fDistI<fMaxMove);
841 //Step 7. Find the Jet Energy
842 if (fDebug>1) Info("FindJets","Looking for Jet energy");
849 //cout<<"Number of cells in jet cone is: "<<fNumInCone<<endl;
851 //Step 8. Check if the jet is a valid jet
852 //Check if cluster energy is above Min allowed to be a jet
853 //DID NOT DO THE COSH COMPARISON HERE -> NEED TO CHECK WHICH COMPARISON IS BEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
854 if (fDebug>5) Info("FindJets","Checking cluster is valid jet");
855 if(fJetESum < fJetEMin)
857 for(Int_t count2=0; count2<fNumUnits; count2++)
859 if(fUnit[count2].GetUnitFlag()==kInCurrentJet || fUnit[count2].GetUnitFlag()==kOutJet)
860 fUnit[count2].SetUnitFlag(kOutJet);
862 if (fDebug>10) Info("FindJets","NOT a valid jet cell");
865 for(Int_t count2=0; count2<fNumUnits; count2++)
867 if(fUnit[count2].GetUnitFlag()==kInCurrentJet)
869 // cout<<"Setting unit #"<<count2 <<" to be officially in a jet!"<<endl;
870 fUnit[count2].SetUnitFlag(kInJet);
874 //NEED TO CHECK FINAL WEIRD ITERATION OF ETA AND PHI CHANGES!!!!!!!!!
875 // fJetPhi += fJetPhiSum/fJetESum; //CHECK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
876 // fJetEta += fJetEtaSum/fJetESum; //CHECK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
878 fNumJets++; //Incrementing number of jets found
879 StoreJetInfo(); //Storing jet info
881 }//end if (check cluster above Min Jet Energy)
882 }//end if (Jet Seed condition)
883 }//end (JET SEED LOOP)
885 if (fDebug>5) Info("FindJets","End of BIG iteration number %i",fNumIter);
888 }//end 10 iteration WHILE LOOP