[u/mrichter/AliRoot.git] / PHOS / AliPHOSJetFinder.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/

//_________________________________________________________________________
// C++ version of UA2 and/or Lund jet finding algorithm
// UA1 jet algorithm from LUND JETSET (LUCELL)
// Find jets at the level of no detector and Digits.
// Needs modifications. 
//*-- Author : D.Peressounko after UA1 coll. etc
//////////////////////////////////////////////////////////////////////////////

/* $Id$ */

/* History of cvs commits:
 *
 * $Log$
 */

// --- ROOT system ---
#include "TClonesArray.h"
//      #include "TIter.h"
#include "TParticle.h"
#include "TTask.h"
// --- Standard library ---

// --- AliRoot header files ---
#include "AliLog.h"
#include "AliPHOSJet.h"
#include "AliPHOSGeometry.h"
#include "AliPHOSDigit.h"
#include "AliPHOSGetter.h"
#include "AliPHOSJetFinder.h"
#include "AliPHOSDigitizer.h"

ClassImp(AliPHOSJetFinder)


//____________________________________________________________________________ 
  AliPHOSJetFinder::AliPHOSJetFinder():TNamed("AliPHOSJetFinder","") 
{
  //Initialize jet parameters
  fNJets = 0 ; 
  fMode  = 0 ;   //No iterations 
  fStatusCode = -999 ; //no selection

  fConeRad = 1.;   //Radius of jet value?????????
  fMaxConeMove = 0.15 ; //value???????
  fMinConeMove = 0.05 ; //value???????
  fEtSeed = 4. ; //Energy of seed particle value??????????
  fEtMin = 5.;   //minimal energy of jet   value??????????
  fPrecBg = 0.00035 ; //value????????
  fSimGain = 0.;
  fSimPedestal = 0.;

  fParticles = 0;
  fJets = 0 ;
  
}

//____________________________________________________________________________ 
  AliPHOSJetFinder::~AliPHOSJetFinder()
{
  //dtor
  if(fParticles){
    delete fParticles ;
    fParticles = 0 ;
  }
  if(fJets){
    delete fJets ;
    fJets = 0 ;
  } 
}

//____________________________________________________________________________ 
void  AliPHOSJetFinder::FindJetsFromParticles(const TClonesArray * plist,TObjArray * jetslist) 
{
  //Find jets in the case without detector.
  TIter next(plist) ;

  TIter nextJet(jetslist) ;

  fNJets = 0 ;
  TParticle * p ;
  AliPHOSJet * jet ;
  //In this cicle we find number of jets and define approx. their directions
  //note, that we do not really add particles to jet (index =-1)
  while((p=static_cast<TParticle*>(next()))){
    if(fStatusCode==-999 || p->GetStatusCode()==fStatusCode){
    if(p->Energy() >= fEtSeed){ //Energetic enough
      //cout << "p " << p->Energy() << endl ;
      //cout << "Status "<<fStatusCode<<" "<<p->GetName()<<" " << p->Energy() << " "<<p->Eta()<< " "<<p->Phi()<<endl ;
      Bool_t startnew = kTRUE ;
      //Do not start new jet if part of older jet
      nextJet.Reset() ;
      while((jet=static_cast<AliPHOSJet*>(nextJet()))){
	//jet->Print() ;
	if(jet->AcceptConeDeviation(p)){
	  startnew = kFALSE ;
	  //cout << "false" << endl ;
	  break ;
	}
      }
      if(startnew){
	//cout << "new " << endl ;
	jet = new AliPHOSJet() ;
	jetslist->Add(jet) ;
	//	jet = static_cast<AliPHOSJet*>(jetslist->Last()) ;
	jet->SetConeRadius(fConeRad) ;
	jet->SetMaxConeMove(fMaxConeMove) ;
	//	jet->SetMinConeMove(fMinConeMove) ;
	jet->AddParticle(p,-1) ;
	fNJets++;
      }
    }
    while((jet=static_cast<AliPHOSJet*>(nextJet()))){
      if(jet->AcceptConeDeviation(p))
	jet->AddParticle(p,-1) ; //Just recalculate direction of jet
    }
    }
  }
    
  //now calculate directions of jets using collected information
  nextJet.Reset() ;
  while((jet=static_cast<AliPHOSJet*>(nextJet()))){
    jet->CalculateAll() ;
    if(jet->Energy() < fEtMin){
      jetslist->Remove(jet) ;
      delete jet ;
    }
  }

  jetslist->Compress() ;
  //And finally, really add particles to jets
  for(Int_t iPart=0; iPart<plist->GetEntries();iPart++){
    p=static_cast<TParticle*>(plist->At(iPart)) ;
    if(fStatusCode == -999 || p->GetStatusCode()==fStatusCode){
    Double_t dist = 999999. ; //big distance
    Int_t iJet = -1 ;
    for(Int_t i=0; i<jetslist->GetEntriesFast();i++){
      jet=static_cast<AliPHOSJet*>(jetslist->At(i)) ;
      if(jet->IsInCone(p)){
	Double_t cdist = jet->DistanceToJet(p); 
	if(cdist < dist){
	  dist = cdist ;
	  iJet = i ;
	}
      }
    }
    if(iJet>-1)
      (static_cast<AliPHOSJet*>(jetslist->At(iJet)))->AddParticle(p,iPart); //assign particle to closest jet
  }
  }
  
  //Calculate jet parameters 
  nextJet.Reset() ;
  while((jet=static_cast<AliPHOSJet*>(nextJet()))){
    jet->CalculateAll() ;
  }

}
//____________________________________________________________________________ 
void AliPHOSJetFinder::FindJetsFromDigits(const TClonesArray * digits, TObjArray * jets){
  //Find jets in the case witht detector at the level of digits.
  if(digits->GetEntries()==0){
    AliError(Form("No entries in digits list \n")) ;
    return ;
  }


  TClonesArray * copyDigits = new TClonesArray(*digits) ;

  //Remove CPV digits if any
  AliPHOSGeometry * geom = AliPHOSGeometry::GetInstance("GPS2","") ;
  Int_t iDigit ;
  AliPHOSDigit * digit ;
  for(iDigit=copyDigits->GetEntries()-1;iDigit>=0;iDigit--){
    digit=static_cast<AliPHOSDigit *>(copyDigits->At(iDigit)) ;
    if(!geom->IsInEMC(digit->GetId()))
      copyDigits->RemoveAt(iDigit) ;
    else
      break ;
  }
  copyDigits->Compress() ;

  Double_t totalEnergy = 0 ;
  Float_t * energy = new Float_t[copyDigits->GetEntries()] ;
  //calculate average energy of digits
  //fill array of energies
  for(iDigit=0;iDigit<copyDigits->GetEntries();iDigit++){
    digit=static_cast<AliPHOSDigit *>(copyDigits->At(iDigit)) ;
    energy[iDigit] = Calibrate(digit) ;
    totalEnergy+=energy[iDigit] ;
  }
  
  //Sort digits in decreasing energy.
  Int_t * index = new Int_t[copyDigits->GetEntries()] ;
  TMath::Sort(copyDigits->GetEntries(),energy,index) ;
  
  Double_t eAverage = totalEnergy/copyDigits->GetEntries()  ;
  //remove digits below average energy
  for(iDigit=copyDigits->GetEntries()-1;iDigit>=0;iDigit--){
    digit=static_cast<AliPHOSDigit *>(copyDigits->At(index[iDigit])) ;
    if(energy[index[iDigit]] < eAverage)
      copyDigits->RemoveAt(iDigit) ;
    else
      break ;
  }
  
  
  AliPHOSJet * jet ;
  Int_t iIter = 0 ;
  while(iIter < 10){//less than 10 iterations
    
    //while digits above seed
    for(Int_t ind=0;ind<copyDigits->GetEntriesFast();ind++){
      digit=static_cast<AliPHOSDigit*>(copyDigits->At(index[ind])) ;
      if(energy[index[ind]] > fEtSeed && digit){ //start new jet      
 	jet = new AliPHOSJet() ;
	Double_t e,eta,phi ;
	CalculateEEtaPhi(digit,e,eta,phi) ;
	jet->AddDigit(e,eta,phi,-1) ;  
	//loop over left digits
	for(Int_t iDigit = 0 ; iDigit < copyDigits->GetEntries() ; iDigit++){
	  if(iDigit!= ind){ //first digit already in jet
	    digit = static_cast<AliPHOSDigit *>(copyDigits->At(iDigit));
	    CalculateEEtaPhi(digit,e,eta,phi) ;	    
	    if(jet->IsInCone(eta,phi) && //is cell in cone
	       jet->AcceptConeDeviation(e,eta,phi)){//if cone does not move too much	      
	      jet->AddDigit(e,eta,phi,-1) ;  //accept new direction
	    }
	  }
	}//end of loop over cells
	
	//accept  all anused cells incide cone
	//note, that digits might be returned as anused later
	for(Int_t icell = 0 ; icell < copyDigits->GetEntries() ; icell++){
	  digit = static_cast<AliPHOSDigit *>(copyDigits->At(icell));
	  if(jet->IsInCone(eta,phi)){ //is cell in cone
	    CalculateEEtaPhi(digit,e,eta,phi) ;
	    jet->AddDigit(e,eta,phi,digit->GetIndexInList()) ; 
	  }
	}
	
	//Accept Jet with Et > Et_min and remove all belonging digits
	if(jet->Energy()/TMath::CosH(jet->Eta()) > fEtMin){
	  Int_t nIndxs ;
	  const Int_t * indxs = jet->Indexs(nIndxs) ;
	  for(Int_t i=0;i<nIndxs;i++){
	    copyDigits->RemoveAt(indxs[i]) ;
	  }
	  jet->CalculateAll() ;
	  jets->AddAt(jet,fNJets++);
	}
	else{ //remove jet and do not touch digits
	  delete jet ;
	}
      }
      else{ 
	if(energy[index[ind]] < fEtSeed){ // no more digits above threshold left, return from loop
	  break ;
	}
      }
      
      iIter++ ;
      //calculate new energy of backrgound
      Double_t oldTotalEnergy = totalEnergy ;
      totalEnergy = 0 ;
      for(Int_t i=0 ; i<copyDigits->GetEntriesFast() ; i++){
	digit=static_cast<AliPHOSDigit*>(copyDigits->At(index[ind])) ;
	if(digit)
	  totalEnergy+=energy[i] ;
      }
      if(!fMode || (oldTotalEnergy != 0) && 
	 (TMath::Abs(oldTotalEnergy - totalEnergy)/oldTotalEnergy < fPrecBg))
	break ;	
    }
  }
  delete [] energy;
  delete [] index;
  copyDigits->Delete() ;
  
}
//____________________________________________________________________________ 
Double_t AliPHOSJetFinder::Calibrate(const AliPHOSDigit * digit){ 
//   if(fPedestals || fGains ){  //use calibration data
//     if(!fPedestals || !fGains ){
//       AliError(Form("Either Pedestals of Gains not set!")) ;
//       return 0 ;
//     }
//     Float_t en=(digit->GetAmp() - fPedestals->Data(digit->GetId)()))*fGains->Data(digit->GetId()) ;
//     if(en>0)
//       return en ;
//     else
//       return 0. ;
//   }
//   else{ //simulation
  if(fSimGain==0){ //read simulation parameters
    AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
    if(!gime){
      AliError(Form("Can not read Calibration parameters")) ;
      return 0 ;
    }
    const TTask * task = gime->Digitizer() ;
    if(strcmp(task->IsA()->GetName(),"AliPHOSDigitizer")==0){
      const AliPHOSDigitizer * dig = static_cast<const AliPHOSDigitizer *>(task) ;
      fSimGain     = dig->GetEMCchannel() ;
      fSimPedestal = dig->GetEMCpedestal();
    }
  }
  
  return fSimPedestal + digit->GetAmp()*fSimGain ;        
  
  //  }  
}
//____________________________________________________________________________ 
void AliPHOSJetFinder::CalculateEEtaPhi(const AliPHOSDigit * d,Double_t &e, Double_t &eta, Double_t &phi){
  //Calculate direction of the jet
  e=Calibrate(d) ;
  AliPHOSGeometry * geom = AliPHOSGeometry::GetInstance("GPS2","") ;
  TVector3 pos ;
  geom->RelPosInAlice(d->GetId(), pos) ;
  eta = pos.Eta() ;
  phi = pos.Phi() ;
}
//____________________________________________________________________________ 
void AliPHOSJetFinder::Print(const Option_t *) const {	
  //Print parameters of the found jet
  printf("\n --------------- AliPHOSJetFinder --------------- \n") ;
  printf(" Jets found .........%d \n",fNJets) ;
  printf(" Seed energy cut ....%f \n",fEtSeed) ;
  printf(" Cone radius ........%f \n",fConeRad) ;
  printf(" Minimal cone move ..%f \n",fMinConeMove) ;
  printf(" Maximal cone move ..%f \n",fMaxConeMove) ;
  printf("------------------------------------------------- \n") ;
}
Commit	Line	Data
5240525e	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	**************************************************************************/
	15
	16	//_________________________________________________________________________
	17	// C++ version of UA2 and/or Lund jet finding algorithm
0bc3b8ed	18	// UA1 jet algorithm from LUND JETSET (LUCELL)
	19	// Find jets at the level of no detector and Digits.
	20	// Needs modifications.
5240525e	21	//*-- Author : D.Peressounko after UA1 coll. etc
	22	//////////////////////////////////////////////////////////////////////////////
	23
702ab87e	24	/* $Id$ */
	25
	26	/* History of cvs commits:
	27	*
	28	* $Log$
	29	*/
	30
5240525e	31	// --- ROOT system ---
	32	#include "TClonesArray.h"
	33	// #include "TIter.h"
	34	#include "TParticle.h"
	35	#include "TTask.h"
	36	// --- Standard library ---
	37
	38	// --- AliRoot header files ---
351dd634	39	#include "AliLog.h"
5240525e	40	#include "AliPHOSJet.h"
e957fea8	41	#include "AliPHOSGeometry.h"
5240525e	42	#include "AliPHOSDigit.h"
	43	#include "AliPHOSGetter.h"
	44	#include "AliPHOSJetFinder.h"
	45	#include "AliPHOSDigitizer.h"
	46
	47	ClassImp(AliPHOSJetFinder)
	48
	49
	50	//____________________________________________________________________________
	51	AliPHOSJetFinder::AliPHOSJetFinder():TNamed("AliPHOSJetFinder","")
	52	{
0bc3b8ed	53	//Initialize jet parameters
0bc3b8ed	54	fNJets = 0 ;
5240525e	55	fMode = 0 ; //No iterations
	56	fStatusCode = -999 ; //no selection
	57
	58	fConeRad = 1.; //Radius of jet value?????????
	59	fMaxConeMove = 0.15 ; //value???????
	60	fMinConeMove = 0.05 ; //value???????
	61	fEtSeed = 4. ; //Energy of seed particle value??????????
	62	fEtMin = 5.; //minimal energy of jet value??????????
	63	fPrecBg = 0.00035 ; //value????????
	64	fSimGain = 0.;
	65	fSimPedestal = 0.;
	66
	67	fParticles = 0;
	68	fJets = 0 ;
	69
	70	}
	71
	72	//____________________________________________________________________________
	73	AliPHOSJetFinder::~AliPHOSJetFinder()
	74	{
0bc3b8ed	75	//dtor
5240525e	76	if(fParticles){
	77	delete fParticles ;
	78	fParticles = 0 ;
	79	}
	80	if(fJets){
	81	delete fJets ;
	82	fJets = 0 ;
	83	}
	84	}
	85
	86	//____________________________________________________________________________
	87	void AliPHOSJetFinder::FindJetsFromParticles(const TClonesArray * plist,TObjArray * jetslist)
	88	{
0bc3b8ed	89	//Find jets in the case without detector.
5240525e	90	TIter next(plist) ;
	91
	92	TIter nextJet(jetslist) ;
	93
	94	fNJets = 0 ;
	95	TParticle * p ;
	96	AliPHOSJet * jet ;
	97	//In this cicle we find number of jets and define approx. their directions
	98	//note, that we do not really add particles to jet (index =-1)
	99	while((p=static_cast<TParticle*>(next()))){
	100	if(fStatusCode==-999 \|\| p->GetStatusCode()==fStatusCode){
	101	if(p->Energy() >= fEtSeed){ //Energetic enough
	102	//cout << "p " << p->Energy() << endl ;
	103	//cout << "Status "<<fStatusCode<<" "<<p->GetName()<<" " << p->Energy() << " "<<p->Eta()<< " "<<p->Phi()<<endl ;
	104	Bool_t startnew = kTRUE ;
	105	//Do not start new jet if part of older jet
	106	nextJet.Reset() ;
	107	while((jet=static_cast<AliPHOSJet*>(nextJet()))){
	108	//jet->Print() ;
	109	if(jet->AcceptConeDeviation(p)){
	110	startnew = kFALSE ;
	111	//cout << "false" << endl ;
	112	break ;
	113	}
	114	}
	115	if(startnew){
	116	//cout << "new " << endl ;
	117	jet = new AliPHOSJet() ;
	118	jetslist->Add(jet) ;
	119	// jet = static_cast<AliPHOSJet*>(jetslist->Last()) ;
	120	jet->SetConeRadius(fConeRad) ;
	121	jet->SetMaxConeMove(fMaxConeMove) ;
	122	// jet->SetMinConeMove(fMinConeMove) ;
	123	jet->AddParticle(p,-1) ;
	124	fNJets++;
	125	}
	126	}
	127	while((jet=static_cast<AliPHOSJet*>(nextJet()))){
	128	if(jet->AcceptConeDeviation(p))
	129	jet->AddParticle(p,-1) ; //Just recalculate direction of jet
	130	}
	131	}
	132	}
	133
	134	//now calculate directions of jets using collected information
	135	nextJet.Reset() ;
	136	while((jet=static_cast<AliPHOSJet*>(nextJet()))){
	137	jet->CalculateAll() ;
	138	if(jet->Energy() < fEtMin){
	139	jetslist->Remove(jet) ;
	140	delete jet ;
	141	}
	142	}
	143
	144	jetslist->Compress() ;
	145	//And finally, really add particles to jets
	146	for(Int_t iPart=0; iPart<plist->GetEntries();iPart++){
	147	p=static_cast<TParticle*>(plist->At(iPart)) ;
	148	if(fStatusCode == -999 \|\| p->GetStatusCode()==fStatusCode){
	149	Double_t dist = 999999. ; //big distance
	150	Int_t iJet = -1 ;
	151	for(Int_t i=0; i<jetslist->GetEntriesFast();i++){
	152	jet=static_cast<AliPHOSJet*>(jetslist->At(i)) ;
	153	if(jet->IsInCone(p)){
154	Double_t cdist = jet->DistanceToJet(p);
155	if(cdist < dist){
156	dist = cdist ;
157	iJet = i ;
158	}
159	}
160	}
161	if(iJet>-1)
162	(static_cast<AliPHOSJet*>(jetslist->At(iJet)))->AddParticle(p,iPart); //assign particle to closest jet
163	}
164	}
165
166	//Calculate jet parameters
167	nextJet.Reset() ;
168	while((jet=static_cast<AliPHOSJet*>(nextJet()))){
169	jet->CalculateAll() ;
170	}
171
172	}
173	//____________________________________________________________________________
174	void AliPHOSJetFinder::FindJetsFromDigits(const TClonesArray * digits, TObjArray * jets){
0bc3b8ed	175	//Find jets in the case witht detector at the level of digits.
5240525e	176	if(digits->GetEntries()==0){
351dd634	177	AliError(Form("No entries in digits list \n")) ;
5240525e	178	return ;
	179	}
	180
	181
	182	TClonesArray * copyDigits = new TClonesArray(*digits) ;
	183
	184	//Remove CPV digits if any
	185	AliPHOSGeometry * geom = AliPHOSGeometry::GetInstance("GPS2","") ;
	186	Int_t iDigit ;
	187	AliPHOSDigit * digit ;
	188	for(iDigit=copyDigits->GetEntries()-1;iDigit>=0;iDigit--){
	189	digit=static_cast<AliPHOSDigit *>(copyDigits->At(iDigit)) ;
	190	if(!geom->IsInEMC(digit->GetId()))
	191	copyDigits->RemoveAt(iDigit) ;
	192	else
	193	break ;
	194	}
	195	copyDigits->Compress() ;
	196
	197	Double_t totalEnergy = 0 ;
2fa01244	198	Float_t * energy = new Float_t[copyDigits->GetEntries()] ;
5240525e	199	//calculate average energy of digits
	200	//fill array of energies
	201	for(iDigit=0;iDigit<copyDigits->GetEntries();iDigit++){
	202	digit=static_cast<AliPHOSDigit *>(copyDigits->At(iDigit)) ;
	203	energy[iDigit] = Calibrate(digit) ;
	204	totalEnergy+=energy[iDigit] ;
	205	}
	206
	207	//Sort digits in decreasing energy.
2fa01244	208	Int_t * index = new Int_t[copyDigits->GetEntries()] ;
5240525e	209	TMath::Sort(copyDigits->GetEntries(),energy,index) ;
	210
	211	Double_t eAverage = totalEnergy/copyDigits->GetEntries() ;
	212	//remove digits below average energy
	213	for(iDigit=copyDigits->GetEntries()-1;iDigit>=0;iDigit--){
	214	digit=static_cast<AliPHOSDigit *>(copyDigits->At(index[iDigit])) ;
	215	if(energy[index[iDigit]] < eAverage)
	216	copyDigits->RemoveAt(iDigit) ;
	217	else
	218	break ;
	219	}
	220
	221
	222	AliPHOSJet * jet ;
	223	Int_t iIter = 0 ;
	224	while(iIter < 10){//less than 10 iterations
	225
	226	//while digits above seed
	227	for(Int_t ind=0;ind<copyDigits->GetEntriesFast();ind++){
	228	digit=static_cast<AliPHOSDigit*>(copyDigits->At(index[ind])) ;
	229	if(energy[index[ind]] > fEtSeed && digit){ //start new jet
	230	jet = new AliPHOSJet() ;
	231	Double_t e,eta,phi ;
	232	CalculateEEtaPhi(digit,e,eta,phi) ;
	233	jet->AddDigit(e,eta,phi,-1) ;
	234	//loop over left digits
	235	for(Int_t iDigit = 0 ; iDigit < copyDigits->GetEntries() ; iDigit++){
	236	if(iDigit!= ind){ //first digit already in jet
	237	digit = static_cast<AliPHOSDigit *>(copyDigits->At(iDigit));
	238	CalculateEEtaPhi(digit,e,eta,phi) ;
90cceaf6	239	if(jet->IsInCone(eta,phi) && //is cell in cone
5240525e	240	jet->AcceptConeDeviation(e,eta,phi)){//if cone does not move too much
	241	jet->AddDigit(e,eta,phi,-1) ; //accept new direction
	242	}
	243	}
	244	}//end of loop over cells
	245
	246	//accept all anused cells incide cone
	247	//note, that digits might be returned as anused later
	248	for(Int_t icell = 0 ; icell < copyDigits->GetEntries() ; icell++){
	249	digit = static_cast<AliPHOSDigit *>(copyDigits->At(icell));
90cceaf6	250	if(jet->IsInCone(eta,phi)){ //is cell in cone
5240525e	251	CalculateEEtaPhi(digit,e,eta,phi) ;
	252	jet->AddDigit(e,eta,phi,digit->GetIndexInList()) ;
	253	}
	254	}
	255
	256	//Accept Jet with Et > Et_min and remove all belonging digits
	257	if(jet->Energy()/TMath::CosH(jet->Eta()) > fEtMin){
	258	Int_t nIndxs ;
	259	const Int_t * indxs = jet->Indexs(nIndxs) ;
	260	for(Int_t i=0;i<nIndxs;i++){
	261	copyDigits->RemoveAt(indxs[i]) ;
	262	}
	263	jet->CalculateAll() ;
	264	jets->AddAt(jet,fNJets++);
	265	}
	266	else{ //remove jet and do not touch digits
	267	delete jet ;
	268	}
	269	}
	270	else{
	271	if(energy[index[ind]] < fEtSeed){ // no more digits above threshold left, return from loop
	272	break ;
	273	}
	274	}
	275
	276	iIter++ ;
	277	//calculate new energy of backrgound
	278	Double_t oldTotalEnergy = totalEnergy ;
	279	totalEnergy = 0 ;
	280	for(Int_t i=0 ; i<copyDigits->GetEntriesFast() ; i++){
	281	digit=static_cast<AliPHOSDigit*>(copyDigits->At(index[ind])) ;
	282	if(digit)
	283	totalEnergy+=energy[i] ;
	284	}
	285	if(!fMode \|\| (oldTotalEnergy != 0) &&
	286	(TMath::Abs(oldTotalEnergy - totalEnergy)/oldTotalEnergy < fPrecBg))
	287	break ;
	288	}
	289	}
2fa01244	290	delete [] energy;
2fa01244	291	delete [] index;
5240525e	292	copyDigits->Delete() ;
	293
	294	}
	295	//____________________________________________________________________________
	296	Double_t AliPHOSJetFinder::Calibrate(const AliPHOSDigit * digit){
	297	// if(fPedestals \|\| fGains ){ //use calibration data
	298	// if(!fPedestals \|\| !fGains ){
351dd634	299	// AliError(Form("Either Pedestals of Gains not set!")) ;
5240525e	300	// return 0 ;
	301	// }
	302	// Float_t en=(digit->GetAmp() - fPedestals->Data(digit->GetId)()))*fGains->Data(digit->GetId()) ;
	303	// if(en>0)
	304	// return en ;
	305	// else
	306	// return 0. ;
	307	// }
	308	// else{ //simulation
	309	if(fSimGain==0){ //read simulation parameters
88cb7938	310	AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
5240525e	311	if(!gime){
351dd634	312	AliError(Form("Can not read Calibration parameters")) ;
5240525e	313	return 0 ;
	314	}
	315	const TTask * task = gime->Digitizer() ;
	316	if(strcmp(task->IsA()->GetName(),"AliPHOSDigitizer")==0){
	317	const AliPHOSDigitizer * dig = static_cast<const AliPHOSDigitizer *>(task) ;
	318	fSimGain = dig->GetEMCchannel() ;
	319	fSimPedestal = dig->GetEMCpedestal();
	320	}
	321	}
	322
	323	return fSimPedestal + digit->GetAmp()*fSimGain ;
	324
	325	// }
	326	}
	327	//____________________________________________________________________________
	328	void AliPHOSJetFinder::CalculateEEtaPhi(const AliPHOSDigit * d,Double_t &e, Double_t &eta, Double_t &phi){
0bc3b8ed	329	//Calculate direction of the jet
5240525e	330	e=Calibrate(d) ;
	331	AliPHOSGeometry * geom = AliPHOSGeometry::GetInstance("GPS2","") ;
	332	TVector3 pos ;
	333	geom->RelPosInAlice(d->GetId(), pos) ;
	334	eta = pos.Eta() ;
	335	phi = pos.Phi() ;
	336	}
	337	//____________________________________________________________________________
702ab87e	338	void AliPHOSJetFinder::Print(const Option_t *) const {
0bc3b8ed	339	//Print parameters of the found jet
5240525e	340	printf("\n --------------- AliPHOSJetFinder --------------- \n") ;
	341	printf(" Jets found .........%d \n",fNJets) ;
	342	printf(" Seed energy cut ....%f \n",fEtSeed) ;
	343	printf(" Cone radius ........%f \n",fConeRad) ;
	344	printf(" Minimal cone move ..%f \n",fMinConeMove) ;
	345	printf(" Maximal cone move ..%f \n",fMaxConeMove) ;
	346	printf("------------------------------------------------- \n") ;
	347	}