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 1.14 2004/04/02 17:11:33 mhorner
24 Marco's bug - fixes implemented
26 Revision 1.13 2004/03/26 01:00:38 mhorner
27 Implementing Marco's optimisations
29 Revision 1.12 2004/03/15 19:59:37 mhorner
30 Pyhtia comparison extended
32 Revision 1.11 2004/03/09 17:06:38 mhorner
35 Revision 1.10 2004/03/06 01:56:09 mhorner
38 Revision 1.9 2004/02/23 20:37:32 mhorner
41 Revision 1.8 2004/01/29 23:28:44 mhorner
42 Jet Finder - hard coded geom parameters removed
44 Revision 1.7 2004/01/21 22:27:47 mhorner
45 Cleaning up coding conventions
47 Revision 1.6 2003/10/28 13:54:30 schutz
48 Compilation warnings fixed
50 Revision 1.5 2003/09/23 13:31:41 mhorner
51 Changed coordinate system
53 Revision 1.4 2003/09/19 13:16:20 mhorner
54 Added additional jet energy info
57 Revision 1.3 2003/09/04 12:49:56 mhorner
58 Changed hadron correction and added saving EMCAL and track contributions
63 //*--Author: Sarah Blyth (LBL)
64 //*--Based on UA1 jet algorithm from LUND JETSET called from EMC-erj
67 #include "AliEMCALJetFinderInput.h"
68 #include "AliEMCALJetFinderOutput.h"
69 #include "AliEMCALJetFinderAlgo.h"
70 #include "AliEMCALJetFinderAlgoOmni.h"
71 #include "AliEMCALJetFinderAlgoUA1Unit.h"
72 #include "AliEMCALGetter.h"
73 #include "AliEMCALGeometry.h"
75 #include "AliEMCALDigit.h"
76 #include "TParticle.h"
78 #include "AliEMCALJet.h"
82 ClassImp(AliEMCALJetFinderAlgoOmni)
84 AliEMCALJetFinderAlgoOmni::AliEMCALJetFinderAlgoOmni()
87 if (fDebug>0) Info("AliEMCALJetFinderAlgoOmni","Beginning Default Constructor");
89 // AliEMCALGetter * gime = AliEMCALGetter::Instance() ;
90 // AliEMCALGeometry * geom = gime->EMCALGeometry();
91 AliEMCALGeometry * geom = AliEMCALGeometry::GetInstance("EMCAL_55_25","EMCAL");
93 fNumUnits = geom->GetNTowers(); //Number of towers in EMCAL
94 fESeed = 5.0; //Default value
95 fConeRad = 0.3; //Default value
96 fJetEMin = 10.0; //Default value
97 fEtMin = 0.0; //Default value
98 fMinMove = 0.05; //From original UA1 JetFinder
99 fMaxMove = 0.15; //From original UA1 JetFinder
100 fBGMaxMove = 0.035; //From original UA1 JetFinder
103 fEBGTotal = 1.0; //Set to 1 so that no div by zero in first FindJets() loop
121 fRad = 2.0; //Set to 2 to start
124 fArrayInitialised = 0; //Set to FALSE to start
125 fBGType = kRatio; //Set Ratio method as default BG subtraction method
126 fBGPar = -1.0; //Set to 1 to start
129 AliEMCALJetFinderAlgoOmni::~AliEMCALJetFinderAlgoOmni()
132 if (fDebug>0) Info("AliEMCALJetFinderAlgoOmni","Beginning Destructor");
134 delete[] fUnitNoCuts;
137 void AliEMCALJetFinderAlgoOmni::SetJetFindingParameters
138 (Int_t numUnits, Float_t eSeed, Float_t coneRad, Float_t jetEMin, Float_t etMin,
139 Float_t minMove, Float_t maxMove, Float_t bgMaxMove)
141 //Sets parameters for the JetFinding algorithm
142 if (fDebug>1) Info("SetJetFindingParameters","Setting parameters for JetFinding");
144 SetNumUnits(numUnits);
151 SetBGMaxMove(bgMaxMove);
154 void AliEMCALJetFinderAlgoOmni::SetJetFindingParameters
155 (Int_t numUnits, Float_t eSeed, Float_t coneRad, Float_t jetEMin, Float_t etMin)
157 //Sets fewer parameters for the JetFinding algorithm
158 if (fDebug>1) Info("SetJetFindingParameters","Setting parameters for JetFinding");
160 SetNumUnits(numUnits);
165 SetMinMove(fMinMove);
166 SetMaxMove(fMaxMove);
167 SetBGMaxMove(fBGMaxMove);
170 void AliEMCALJetFinderAlgoOmni::InitUnitArray()
172 //Initialises unit arrays
173 if(fArrayInitialised) delete [] fUnit;
174 if(fArrayInitialised) delete [] fUnitNoCuts;
175 fUnit = new AliEMCALJetFinderAlgoUA1Unit[fNumUnits];
176 fUnitNoCuts = new AliEMCALJetFinderAlgoUA1Unit[fNumUnits];
177 fArrayInitialised = 1;
180 void AliEMCALJetFinderAlgoOmni::FillUnitArray(AliEMCALJetFinderAlgoUA1FillUnitFlagType_t flag)
182 // Fill the unit array
183 if (fDebug>1) Info("FillUnitArray","Beginning FillUnitArray");
184 // AliEMCAL* pEMCAL = (AliEMCAL*) gAlice->GetModule("EMCAL");
186 // AliEMCALGeometry* geom = AliEMCALGeometry::GetInstance(pEMCAL->GetTitle(), "");
190 AliEMCALGetter * gime = AliEMCALGetter::Instance() ;
191 AliEMCALGeometry * geom;
193 geom = gime->EMCALGeometry();
195 geom = AliEMCALGeometry::GetInstance("EMCAL_55_25","EMCAL");
199 AliEMCALJetFinderAlgoUA1FillUnitFlagType_t option = flag;
200 Int_t numTracks, numDigits;
202 //Loops over all elements in the AliEMCALJetFinderAlgoUA1Unit array and
203 //fills the objects with relevant values from the Data Input object
204 if (fDebug>10) Info("FillUnitArray","Filling array with Unit objects");
205 if (fDebug>15) Info("FillUnitArray","NTracks %i NDigits %i",fInputPointer->GetNTracks(),fInputPointer->GetNDigits());
206 numTracks = fInputPointer->GetNTracks();
207 numDigits = fInputPointer->GetNDigits();
209 AliEMCALDigit *myDigit;
210 if (!fPythiaComparison)
212 //Fill units with Track info if appropriate
213 if(option==kFillTracksOnly || option ==kFillAll)
215 for(Int_t j=0; j<numTracks; j++)
217 myPart = fInputPointer->GetTrack(j);
218 Float_t eta = myPart->Eta();
219 Float_t phi = myPart->Phi();
220 Int_t towerID = geom->TowerIndexFromEtaPhi(eta,180.0/TMath::Pi()*phi);
221 Float_t pT = myPart->Pt();
222 Float_t unitEnergy = fUnit[towerID-1].GetUnitEnergy();
223 Float_t unitEnergyNoCuts = fUnitNoCuts[towerID-1].GetUnitEnergy();
226 //OLD WAY: //Do Hadron Correction
229 Double_t fullP = myPart->P();
230 Double_t hCEnergy = fHadCorr->GetEnergy(fullP, (Double_t)eta);
231 unitEnergy -= hCEnergy*TMath::Sin(myPart->Theta());
232 unitEnergyNoCuts -= hCEnergy*TMath::Sin(myPart->Theta());
233 fUnit[towerID-1].SetUnitEnergy(unitEnergy);
234 fUnitNoCuts[towerID-1].SetUnitEnergy(unitEnergyNoCuts);
235 } //end Hadron Correction loop
239 //Do Hadron Correction with propagate phi for the track
244 TParticlePDG *pdg = myPart->GetPDG();
245 if(pdg->Charge() < 0)
247 deltaPhi = PropagatePhi(myPart->Pt(), -1.0, curl);
250 deltaPhi = PropagatePhi(myPart->Pt(), 1.0, curl);
253 //Get new tower id for cell that track would curve into
255 if(phi>(TMath::Pi()/180.0)*geom->GetArm1PhiMax() || phi<(TMath::Pi()/180.0)*geom->GetArm1PhiMin())
260 towerID2 = geom->TowerIndexFromEtaPhi(eta,180.0/TMath::Pi()*phi);
265 //Find unit energy of new tower
266 Float_t unitEnergy2 = fUnit[towerID2-1].GetUnitEnergy();
267 Float_t unitEnergy2NoCuts = fUnitNoCuts[towerID2-1].GetUnitEnergy();
268 Double_t fullP = myPart->P();
269 Double_t hCEnergy = fHadCorr->GetEnergy(fullP, (Double_t)eta);
270 unitEnergy2 -= hCEnergy*TMath::Sin(myPart->Theta());
271 unitEnergy2NoCuts -= hCEnergy*TMath::Sin(myPart->Theta());
272 fUnit[towerID2-1].SetUnitEnergy(unitEnergy2);
273 fUnitNoCuts[towerID2-1].SetUnitEnergy(unitEnergy2NoCuts);
274 }//end if for towerID2
275 }//end Hadron Correction loop
278 fUnitNoCuts[towerID-1].SetUnitEnergy(unitEnergyNoCuts + pT);
279 //Do Pt cut on tracks
280 if(fPtCut != 0 && pT < fPtCut) continue;
282 fUnit[towerID-1].SetUnitEnergy(unitEnergy+pT);
285 }//end Tracks condition
288 //Fill units with Digit info if appropriate
289 if(option ==kFillDigitsOnly || option ==kFillAll)
291 for(Int_t k=0; k<numDigits; k++)
293 myDigit = fInputPointer->GetDigit(k);
294 if (fDebug>10) Info("FillUnitArray","getting digits %i %i numdigits",k,numDigits );
295 Int_t towerID = myDigit->GetId();
296 Int_t amplitude = myDigit->GetAmp(); //Gets the integer valued amplitude of the digit
297 Float_t amp = (Float_t)amplitude; //Need to typecast to Float_t before doing real energy conversion
298 Float_t digitEnergy = amp/10000000.0; //Factor of 10 million needed to convert!
299 Float_t unitEnergy = fUnit[towerID-1].GetUnitEnergy() + digitEnergy;
300 Float_t unitEnergyNoCuts = fUnitNoCuts[towerID-1].GetUnitEnergy() + digitEnergy;
301 fUnit[towerID-1].SetUnitEnergy(unitEnergy);
302 fUnitNoCuts[towerID-1].SetUnitEnergy(unitEnergyNoCuts);
304 }//end digits condition
306 //Set all unit flags, Eta, Phi
307 for(Int_t i=0; i<fNumUnits; i++)
309 if (fDebug>10) Info("FillUnitArray","Setting all units outside jets");
310 //Set all units to be outside a jet initially
311 fUnit[i].SetUnitFlag(kOutJet);
312 fUnit[i].SetUnitID(i+1);
315 geom->EtaPhiFromIndex(fUnit[i].GetUnitID(), eta, phi);
316 fUnit[i].SetUnitEta(eta);
317 fUnit[i].SetUnitPhi(phi*TMath::Pi()/180.0);
318 //Set all units to be outside a jet initially
319 fUnitNoCuts[i].SetUnitFlag(kOutJet);
320 fUnitNoCuts[i].SetUnitID(i+1);
323 geom->EtaPhiFromIndex(fUnitNoCuts[i].GetUnitID(), eta, phi);
324 fUnitNoCuts[i].SetUnitEta(eta);
325 fUnitNoCuts[i].SetUnitPhi(phi*TMath::Pi()/180.0);
326 // if(i>13000) cout<<"!!!!!!!!!!!!!!!!!For unit0, eta="<<eta<<" and phi="<<phi*TMath::Pi()/180.0<<" and ID="<<fUnit[i].GetUnitID()<<endl;
327 // 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;
328 }//end loop over all units in array (same as all towers in EMCAL)
331 if (fPythiaComparison)
333 for(Int_t j=0; j<numTracks; j++)
335 myPart = fInputPointer->GetTrack(j);
336 fUnit[j].SetUnitID(j);
337 fUnit[j].SetUnitFlag(kOutJet);
338 fUnit[j].SetUnitEta(myPart->Eta());
339 fUnit[j].SetUnitPhi(myPart->Phi());
340 if (myPart->Energy()*TMath::Sin(myPart->Theta()) > fPtCut || myPart->GetPDG()->Charge() == 0.0 )
342 fUnit[j].SetUnitEnergy(myPart->Energy()*TMath::Sin(myPart->Theta()));
345 fUnit[j].SetUnitEnergy(0.00);
347 fUnitNoCuts[j].SetUnitID(j);
348 fUnitNoCuts[j].SetUnitFlag(kOutJet);
349 fUnitNoCuts[j].SetUnitEta(myPart->Eta());
350 fUnitNoCuts[j].SetUnitPhi(myPart->Phi());
351 fUnitNoCuts[j].SetUnitEnergy(myPart->Energy()*TMath::Sin(myPart->Theta()));
353 for(Int_t k=numTracks; k < fNumUnits; k++)
355 fUnit[k].SetUnitID(k);
356 fUnit[k].SetUnitFlag(kBelowMinEt);
357 fUnit[k].SetUnitEta(0.0);
358 fUnit[k].SetUnitPhi(0.0);
359 fUnit[k].SetUnitEnergy(0.0);
360 fUnitNoCuts[k].SetUnitID(k);
361 fUnitNoCuts[k].SetUnitFlag(kBelowMinEt);
362 fUnitNoCuts[k].SetUnitEta(0.0);
363 fUnitNoCuts[k].SetUnitPhi(0.0);
364 fUnitNoCuts[k].SetUnitEnergy(0.0);
373 void AliEMCALJetFinderAlgoOmni::Sort(AliEMCALJetFinderAlgoUA1Unit *unit, Int_t length)
375 //Calls the recursive quicksort method to sort unit objects in decending order of Energy
376 if (fDebug>1) Info("Sort","Sorting Unit objects");
377 QS(unit, 0, length-1);
381 void AliEMCALJetFinderAlgoOmni::QS(AliEMCALJetFinderAlgoUA1Unit *unit, Int_t left, Int_t right)
383 //Sorts the AliEMCALJetFinderAlgoUA1Unit objects in decending order of Energy
384 if (fDebug>111) Info("QS","QuickSorting Unit objects");
388 AliEMCALJetFinderAlgoUA1Unit unitFirst;
389 AliEMCALJetFinderAlgoUA1Unit unitSecond;
393 unitFirst = unit[(left+right)/2];
397 while( (unit[i].GetUnitEnergy() > unitFirst.GetUnitEnergy()) && (i < right)) i++;
398 while( (unitFirst.GetUnitEnergy() > unit[j].GetUnitEnergy()) && (j > left)) j--;
402 unitSecond = unit[i];
404 unit[j] = unitSecond;
410 if(left < j) QS(unit, left, j);
411 if(i < right) QS(unit, i, right);
415 void AliEMCALJetFinderAlgoOmni::FindBG()
417 if(fBGType == kRatio) RatioBG();
418 else if(fBGType == kCone) ConeBG();
419 else if(fBGType == kConstant) ConstantBG();
422 void AliEMCALJetFinderAlgoOmni::RatioBG()
424 //Finds the background energy for the iteration
425 //using the Ratio method
426 if (fDebug>1) Info("FindBG","Finding Average Background");
427 //Store BGEperCell from previous iteration!
428 fEBGTotalOld = fEBGTotal;
432 //If user has not set fBGPar, set it to the default
433 //for TPC = 90% efficiency, PtCut = 2GeV/c, timecut = 30ns
434 if(fBGPar == -1) fBGPar = 0.4685;
436 //Loop over all unit objects in the Unit array and link to same
437 //unit ID in NoCuts Unit array
438 for(Int_t i=0; i<fNumUnits; i++)
440 if(fUnit[i].GetUnitFlag() != kInJet)
442 Int_t id = fUnit[i].GetUnitID();
443 fEBGTotal += fUnitNoCuts[id-1].GetUnitEnergy();
449 fEBGAve = fEBGTotal / (fNumUnits - numCone);
450 if (fDebug>5) Info("FindBG","Average BG is %f: ",fEBGAve);
452 for(Int_t count=0; count<fNumUnits;count++)
454 fUnit[count].SetUnitFlag(kOutJet);
458 void AliEMCALJetFinderAlgoOmni::ConeBG()
460 //Finds the background energy for the iteration
461 //using all energy not contained inside a jet
462 if (fDebug>1) Info("FindBG","Finding Average Background");
463 //Store old value of BGEperCell!
464 fEBGTotalOld = fEBGTotal;
468 //Loop over all unit objects in the array and sum the energy of those not in a jet
469 for(Int_t i=0; i<fNumUnits; i++)
471 if(fUnit[i].GetUnitFlag() != kInJet)
472 fEBGTotal += fUnit[i].GetUnitEnergy();
476 fEBGAve = fEBGTotal / (fNumUnits - numCone);
477 if (fDebug>5) Info("FindBG","Average BG is %f: ",fEBGAve);
479 for(Int_t count=0; count<fNumUnits;count++)
481 fUnit[count].SetUnitFlag(kOutJet);
485 void AliEMCALJetFinderAlgoOmni::ConstantBG()
487 //Finds the background energy for the iteration
488 //using all energy not contained inside a jet
489 if (fDebug>1) Info("FindBG","Finding Average Background");
491 //If user has not set fBGPar, set it to the default
492 //for TPC = 90% efficiency, PtCut = 2GeV/c, timecut = 30ns
493 if(fBGPar == -1) fBGPar = 0.03378;
496 if (fDebug>5) Info("FindBG","Average BG is %f: ",fEBGAve);
500 for(Int_t count=0; count<fNumUnits;count++)
502 if(fUnit[count].GetUnitFlag() == kInJet)
506 fUnit[count].SetUnitFlag(kOutJet);
508 fEBGTotal = fEBGAve * (fNumUnits-numCone);
509 fEBGTotalOld = fEBGTotal;
512 void AliEMCALJetFinderAlgoOmni::FindJetEtaPhi(Int_t counter)
514 //Finds the eta and phi of the jet axis
515 if (fDebug>10) Info("FindJetEtaPhi","Finding Jet Eta and Phi");
517 fDEta = fUnit[counter].GetUnitEta() - fEtaInit;
518 fDPhi = fUnit[counter].GetUnitPhi() - fPhiInit;
520 fEnergy = fUnit[counter].GetUnitEnergy() - fEBGAve;
521 fJetEtaSum += fEnergy * fDEta;
522 fJetPhiSum += fEnergy * fDPhi;
524 if (fJetESum >1.0e-7)
526 fJetEta = fEtaInit + (fJetEtaSum / fJetESum);
527 fJetPhi = fPhiInit + (fJetPhiSum / fJetESum);
532 void AliEMCALJetFinderAlgoOmni::FindJetEnergy()
534 //Finds the energy of the jet after the final axis has been found
535 if (fDebug>1) Info("FindJetEnergy","Finding Jet Energy");
537 for(Int_t i=0; i<fNumUnits; i++)
539 //Loop over all unit objects in the array and find if within cone radius
540 Float_t dEta = fUnit[i].GetUnitEta() - fJetEta;
541 Float_t dPhi = fUnit[i].GetUnitPhi() - fJetPhi;
543 if ((dEta*dEta) + (dPhi*dPhi)>1.e-7)
545 rad = TMath::Sqrt( (dEta*dEta) + (dPhi*dPhi) );
551 if(fUnit[i].GetUnitFlag()==kOutJet && rad<= fConeRad)
553 fUnit[i].SetUnitFlag(kInCurrentJet);
554 Float_t energy = fUnit[i].GetUnitEnergy() - fEBGAve;
556 fJetEtaSum += energy * dEta;
557 fJetPhiSum += energy * dPhi;
558 fNumInCone++; //Increment the number of cells in the jet cone
564 void AliEMCALJetFinderAlgoOmni::StoreJetInfo()
566 //Stores the resulting jet information in appropriate storage structure (TO BE DECIDED!!!!)
567 if (fDebug>1) Info("StoreJetInfo","Storing Jet Information");
568 AliEMCALGetter * gime = AliEMCALGetter::Instance() ;
569 AliEMCALGeometry * geom;
571 geom = gime->EMCALGeometry();
573 geom = AliEMCALGeometry::GetInstance("EMCAL_55_25","EMCAL");
575 //fJetESum is the final jet energy (background has been subtracted)
576 //fJetEta is the final jet Eta
577 //fJetPhi is the final jet Phi
578 //fNumInCone is the final number of cells included in the jet cone
579 //fEtaInit is the eta of the initiator cell
580 //fPhiInit is the phi of the initiator cell
582 AliEMCALJet jet(fJetESum,fJetPhi,fJetEta);
584 cout<<"For iteration "<<fNumIter <<" and Jet number " <<fNumJets <<endl;
585 cout<<"The jet energy is: " <<fJetESum <<endl;
586 cout<<"The jet eta is ---->" <<fJetEta <<endl;
587 cout<<"The jet phi is ---->" <<fJetPhi <<endl;
589 Int_t numberTracks = fInputPointer->GetNTracks();
590 Int_t numberDigits = fInputPointer->GetNDigits();
593 Int_t numTracksInCone = 0;
594 Float_t trackEnergy = 0.0;
595 Float_t trackEnergyPtCut =0.0;
596 Float_t emcalEnergy = 0.0;
597 Float_t emcalEnergyBGSub = 0.0;
599 for(Int_t counter=0; counter<numberTracks; counter++)
601 myP = fInputPointer->GetTrack(counter);
602 Float_t eta = myP->Eta();
603 Float_t phi = myP->Phi();
604 Float_t deta = fJetEta-eta;
605 Float_t dphi = fJetPhi -phi;
606 Float_t rad = TMath::Sqrt( (deta*deta) + (dphi*dphi));
607 if(rad<=fConeRad) numTracksInCone++;
610 Float_t *pTArray = new Float_t[numTracksInCone];
611 Float_t *etaArray = new Float_t[numTracksInCone];
612 Float_t *phiArray = new Float_t[numTracksInCone];
613 Int_t *pdgArray = new Int_t[numTracksInCone];
616 for(Int_t counter2=0; counter2<numberTracks; counter2++)
618 myP = fInputPointer->GetTrack(counter2);
619 Float_t eta = myP->Eta();
620 Float_t phi = myP->Phi();
621 Float_t deta = fJetEta-eta;
622 Float_t dphi = fJetPhi -phi;
624 if ((deta*deta) + (dphi*dphi)>1.e-7)
626 rad = TMath::Sqrt( (deta*deta) + (dphi*dphi) );
634 pTArray[index] = myP->Pt();
635 //Calculate track contribution within jetcone
636 trackEnergy += myP->Pt();
637 if(myP->Pt() >= fPtCut) trackEnergyPtCut += myP->Pt();
638 etaArray[index] = eta;
639 phiArray[index] = phi;
640 pdgArray[index] = myP->GetPdgCode();
644 Double_t fullP = myP->P();
645 Double_t hCEnergy = fHadCorr->GetEnergy(fullP, (Double_t)eta);
646 emcalEnergy -= hCEnergy*TMath::Sin(myP->Theta());
647 emcalEnergyBGSub -= hCEnergy*TMath::Sin(myP->Theta());
648 } //end Hadron Correction loop
653 //Loop over digits to find EMCal contribution within jetcone
654 for(Int_t counter3=0; counter3<numberDigits; counter3++)
656 myD = fInputPointer->GetDigit(counter3);
657 //GET DIGIT ETA, PHI so that can check if inside R!
660 Int_t iID = myD->GetId();
661 geom->EtaPhiFromIndex(iID, eta, phi);
662 Float_t deta = fJetEta-eta;
663 Float_t dphi = fJetPhi -(TMath::Pi()/180.0)*phi;
664 //Float_t rad = TMath::Sqrt( (deta*deta) + (dphi*dphi));
666 if ((deta*deta) + (dphi*dphi)>1.e-7)
668 rad = TMath::Sqrt( (deta*deta) + (dphi*dphi) );
676 Int_t amplitude = myD->GetAmp(); //Gets the integer valued amplitude of the digit
677 Float_t amp = (Float_t)amplitude; //Need to typecast to Float_t before doing real energy conversion
678 Float_t digitEnergy = amp/10000000.0; //Factor of 10 million needed to convert!
679 emcalEnergy += digitEnergy;
680 emcalEnergyBGSub += (digitEnergy - fEBGAve);
685 jet.SetTrackList(numTracksInCone,pTArray, etaArray, phiArray, pdgArray);
686 jet.SetEMCALEnergy(emcalEnergy);
687 jet.SetEMCALEnergyBGSub(emcalEnergyBGSub);
688 jet.SetTrackEnergy(trackEnergy);
689 jet.SetTrackEnergyPtCut(trackEnergyPtCut);
690 fOutputPointer->AddJet(&jet);
698 void AliEMCALJetFinderAlgoOmni::FindJets()
700 //Runs the complete UA1 JetFinding algorithm to find jets!
701 if (fDebug>1) Info("FindJets","Starting Jet Finding!!!");
703 //If the array of JetFinderUnit objects has not been initialised then initialise with default settings
704 if(!fArrayInitialised)
707 FillUnitArray(kFillAll);
709 if (fDebug>1) Info("FindJets","Unit array filled");
711 //Step 1. Sort the array in descending order of Energy
712 Sort(fUnit,fNumUnits);
714 //Step 2. Set the number of iterations and Number of jets found to zero to start
718 //Step 3. Begin the iteration loop to find jets
719 //Need to iterate the algorithm while number of iterations<2 OR number of iterations<10 AND
720 //the value of the average background has changed more than specified amount
721 //Min iterations = 2, Max iterations = 10
722 //while(fNumIter<2 || (fNumIter <10 && ( (fEBGTotal-fEBGTotalOld)/fEBGTotal) > fBGMaxMove) )
724 while(fNumIter<2 || (fNumIter <10 && ( fEBGTotal-fEBGTotalOld) > fEBGTotal*fBGMaxMove) )
726 if (fDebug>1) Info("FindJets","Starting BIG iteration ---> %i",fNumIter);
728 //Step 4. Find the value of the average background energy
730 fOutputPointer->Reset(kResetJets); //Reset output object to store info for new iteration
733 //Loop over the array of unit objects and flag those with energy below MinCellEt
735 for(Int_t j=0; j<fNumUnits; j++)
737 if( (fUnit[j].GetUnitEnergy()-fEBGAve) < fEtMin)
739 // fUnit[j].SetUnitFlag(kBelowMinEt); TAKING OUT kBelow flag
743 //cout<<"THERE WERE "<<numbelow<<" units with E <EtMin!!!!!!!!!!!!!!!"<<endl;
745 //Do quick check if there are no jets upfront
746 // if(fUnit[0].GetUnitFlag() == kBelowMinEt)
747 if( (fUnit[0].GetUnitEnergy()-fEBGAve) < fEtMin)
749 cout <<"There are no jets for this event!" <<endl;
753 //Step 5. Begin with the first jet candidate cell (JET SEED LOOP)
754 if (fDebug>5) Info("FindJets","Beginning JET SEED LOOP");
755 for(Int_t count=0; count<fNumUnits; count++)
758 //CHECK CONDITION HERE _ NOT SURE IF SHOULD MAYBE BE: GetUnitEnergy()-fEBGAve >fESeed?????????????????????????????
759 if(fUnit[count].GetUnitEnergy()>=fESeed && fUnit[count].GetUnitFlag()==kOutJet)
761 fEnergy = fUnit[count].GetUnitEnergy() - fEBGAve;
762 fJetEta = fUnit[count].GetUnitEta();
763 fJetPhi = fUnit[count].GetUnitPhi();
764 Int_t seedID = fUnit[count].GetUnitID();
765 if (fDebug>5) Info("FindJets","Inside first candidate jet seed loop for time : %i", count);
766 if (fDebug>5) Info("FindJets","Found candidate energy %f ",fEnergy);
767 if (fDebug>5) Info("FindJets","Found candidate eta %f ", fJetEta);
768 if (fDebug>5) Info("FindJets","Found candidate phi %f ", fJetPhi);
769 if (fDebug>5) Info("FindJets","Found candidate ID %i", seedID);
782 //Step 6. Find Jet Eta and Phi
783 //Loop over all units in the array to find the ones in the jet cone and determine contrib to Jet eta, phi
784 for(Int_t count1=0; count1<fNumUnits; count1++)
786 if(fUnit[count1].GetUnitID() == seedID && testflag)
789 continue; //skip unit if the jetseed to avoid doublecounting
791 if(fUnit[count1].GetUnitFlag() == kOutJet)
793 fDEta = fUnit[count1].GetUnitEta() - fJetEta;
794 fDPhi = fUnit[count1].GetUnitPhi() - fJetPhi;
795 if ( (fDEta*fDEta) + (fDPhi*fDPhi) >1.e-7)
797 fRad = TMath::Sqrt( (fDEta*fDEta) + (fDPhi*fDPhi) );
804 FindJetEtaPhi(count1);
807 }//end for (Jet Eta, Phi LOOP)
809 //Find the distance cone centre moved from previous cone centre
810 if (fDebug>10) Info("FindJets","Checking if cone move small enough");
811 if (((fJetEta-fEtaB)*(fJetEta-fEtaB)) + ((fJetPhi-fPhiB)*(fJetPhi-fPhiB)) >1.e-7)
813 fDistP = TMath::Sqrt( ((fJetEta-fEtaB)*(fJetEta-fEtaB)) + ((fJetPhi-fPhiB)*(fJetPhi-fPhiB)) );
818 // if(fDistP <= fMinMove) break;
821 //Find the distance cone centre is from initiator cell
822 if (fDebug>10) Info("FindJets","Checking if cone move too large");
823 if ( ((fJetEtaSum)*(fJetEtaSum))+((fJetPhiSum)*(fJetPhiSum)) >1.e-7)
825 fDistI = TMath::Sqrt( ((fJetEtaSum/fJetESum)*(fJetEtaSum/fJetESum)) + ((fJetPhiSum/fJetESum)*
826 (fJetPhiSum/fJetESum)));
832 if(fDistP>fMinMove && fDistI<fMaxMove)
838 }while(fDistP>fMinMove && fDistI<fMaxMove);
844 //Step 7. Find the Jet Energy
845 if (fDebug>1) Info("FindJets","Looking for Jet energy");
852 //cout<<"Number of cells in jet cone is: "<<fNumInCone<<endl;
854 //Step 8. Check if the jet is a valid jet
855 //Check if cluster energy is above Min allowed to be a jet
856 //DID NOT DO THE COSH COMPARISON HERE -> NEED TO CHECK WHICH COMPARISON IS BEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
857 if (fDebug>5) Info("FindJets","Checking cluster is valid jet");
858 if(fJetESum < fJetEMin)
860 for(Int_t count2=0; count2<fNumUnits; count2++)
862 if(fUnit[count2].GetUnitFlag()==kInCurrentJet || fUnit[count2].GetUnitFlag()==kOutJet)
863 fUnit[count2].SetUnitFlag(kOutJet);
865 if (fDebug>10) Info("FindJets","NOT a valid jet cell");
868 for(Int_t count2=0; count2<fNumUnits; count2++)
870 if(fUnit[count2].GetUnitFlag()==kInCurrentJet)
872 // cout<<"Setting unit #"<<count2 <<" to be officially in a jet!"<<endl;
873 fUnit[count2].SetUnitFlag(kInJet);
877 //NEED TO CHECK FINAL WEIRD ITERATION OF ETA AND PHI CHANGES!!!!!!!!!
878 // fJetPhi += fJetPhiSum/fJetESum; //CHECK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
879 // fJetEta += fJetEtaSum/fJetESum; //CHECK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
881 fNumJets++; //Incrementing number of jets found
882 StoreJetInfo(); //Storing jet info
884 }//end if (check cluster above Min Jet Energy)
885 }//end if (Jet Seed condition)
886 }//end (JET SEED LOOP)
888 if (fDebug>5) Info("FindJets","End of BIG iteration number %i",fNumIter);
891 }//end 10 iteration WHILE LOOP