[u/mrichter/AliRoot.git] / PHOS / AliPHOSRecParticle.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.                  *
 **************************************************************************/
/* $Id$ */
//_________________________________________________________________________
//  A Reconstructed Particle in PHOS    
//  To become a general class of AliRoot ?       
//  Why should I put meaningless comments
//  just to satisfy
//  the code checker                 
//       
//*-- Author: Yves Schutz (SUBATECH)


// --- ROOT system ---

// --- Standard library ---


// --- AliRoot header files ---
#include "AliStack.h"
#include "AliPHOSHit.h" 
#include "AliPHOSDigit.h" 
#include "AliPHOSTrackSegment.h" 
#include "AliPHOSEmcRecPoint.h" 
#include "AliPHOSRecParticle.h"
#include "AliPHOSLoader.h" 
#include "AliPHOSGeometry.h" 
#include "AliLog.h"

//____________________________________________________________________________
AliPHOSRecParticle::AliPHOSRecParticle(): 
  fPHOSTrackSegment(0),
  fDebug(kFALSE),
  fPos()
{
  // ctor
  const Int_t nSPECIES = AliPID::kSPECIESN;
  for(Int_t i = 0; i<nSPECIES ; i++)
    fPID[i]=0.;
}


//____________________________________________________________________________
AliPHOSRecParticle::AliPHOSRecParticle(const AliPHOSRecParticle & rp):
  AliPHOSFastRecParticle(rp),
  fPHOSTrackSegment(rp.fPHOSTrackSegment),
  fDebug(kFALSE),
  fPos()
{
  // copy ctor
  fType             = rp.fType ; 
  fIndexInList      = rp.fIndexInList ;

  fPdgCode     = rp.fPdgCode;
  fStatusCode  = rp.fStatusCode;
  fMother[0]   = rp.fMother[0];
  fMother[1]   = rp.fMother[1];
  fDaughter[0] = rp.fDaughter[0];
  fDaughter[1] = rp.fDaughter[1];
  fWeight      = rp.fWeight;
  fCalcMass    = rp.fCalcMass;
  fPx          = rp.fPx;
  fPy          = rp.fPy;
  fPz          = rp.fPz;
  fE           = rp.fE;
  fVx          = rp.fVx;
  fVy          = rp.fVy;
  fVz          = rp.fVz;
  fVt          = rp.fVt;
  fPolarTheta  = rp.fPolarTheta;
  fPolarPhi    = rp.fPolarPhi;
  fParticlePDG = rp.fParticlePDG; 
  const Int_t nSPECIES = AliPID::kSPECIESN;
  for(Int_t i = 0; i<nSPECIES ; i++)
    fPID[i]=rp.fPID[i];
}

//____________________________________________________________________________
AliPHOSRecParticle & AliPHOSRecParticle::operator = (const AliPHOSRecParticle &)
{
  Fatal("operator =", "not implemented");
  return *this;
}

//____________________________________________________________________________
Int_t AliPHOSRecParticle::GetNPrimaries() const  
{ 
  return -1;
}

//____________________________________________________________________________
Int_t AliPHOSRecParticle::GetNPrimariesToRecParticles() const  
{ 
  // Get the number of primaries at the origine of the RecParticle
  Int_t rv = 0 ;
  AliRunLoader* rl = AliRunLoader::Instance() ;
  AliPHOSLoader * phosLoader = static_cast<AliPHOSLoader*>(rl->GetLoader("PHOSLoader"));
  Int_t emcRPindex = static_cast<AliPHOSTrackSegment*>(phosLoader->TrackSegments()->At(GetPHOSTSIndex()))->GetEmcIndex();
  static_cast<AliPHOSEmcRecPoint*>(phosLoader->EmcRecPoints()->At(emcRPindex))->GetPrimaries(rv) ; 
  return rv ; 
}

//____________________________________________________________________________
const TParticle * AliPHOSRecParticle::GetPrimary() const  
{
  // Get the primary particle at the origine of the RecParticle and 
  // which has deposited the largest energy in SDigits
  AliRunLoader* rl = AliRunLoader::Instance() ;
  AliPHOSLoader * phosLoader = static_cast<AliPHOSLoader*>(rl->GetLoader("PHOSLoader"));
  rl->GetEvent(rl->GetEventNumber()) ;
  rl->LoadKinematics("READ");
  rl->LoadSDigits("READ");
  
  if(GetNPrimaries() == 0)
    return 0 ;
  if(GetNPrimaries() == 1)
    return GetPrimary(0) ;
  Int_t AbsId = 0;
  Int_t module ;

  // Get PHOS Geometry object
  AliPHOSGeometry *geom;
  if (!(geom = AliPHOSGeometry::GetInstance())) 
        geom = AliPHOSGeometry::GetInstance("IHEP","");
  Double_t x,z ;
//DP to be fixed: Why do we use this method here??? M.B. use RecPoint???
  Double_t vtx[3]={0.,0.,0.} ;
  geom->ImpactOnEmc(vtx,static_cast<double>(Theta()),static_cast<double>(Phi()), module,z,x);
  Int_t amp = 0 ;
  Int_t iPrim=-1 ;
  if(module != 0){
    geom->RelPosToAbsId(module,x,z,AbsId) ;
   TClonesArray * sdigits = phosLoader->SDigits() ;
   AliPHOSDigit * sdig ;
    
   for(Int_t i = 0 ; i < sdigits->GetEntriesFast() ; i++){
     sdig = static_cast<AliPHOSDigit *>(sdigits->At(i)) ;
     if((sdig->GetId() == AbsId)){
       if((sdig->GetAmp() > amp) && (sdig->GetNprimary())){
	 amp = sdig->GetAmp() ;
	 iPrim = sdig->GetPrimary(1) ;
       } 
       // do not scan rest of list
       if(sdig->GetId() > AbsId)
	 continue ; 
     }
   }
  }
  if(iPrim >= 0)
    return rl->Stack()->Particle(iPrim) ;
  else
    return 0 ;
} 
  
//____________________________________________________________________________
Int_t AliPHOSRecParticle::GetPrimaryIndex() const  
{
  // Get the primary track index in TreeK which deposits the most energy
  // in Digits which forms EmcRecPoint, which produces TrackSegment,
  // which the RecParticle is created from


  AliRunLoader* rl = AliRunLoader::Instance() ;
  AliPHOSLoader * phosLoader = static_cast<AliPHOSLoader*>(rl->GetLoader("PHOSLoader"));
  rl->GetEvent(rl->GetEventNumber()) ;
  rl->LoadHits("READ");
  rl->LoadDigits("READ");
  rl->LoadRecPoints("READ");
  rl->LoadTracks("READ");
  
  // Get TrackSegment corresponding to this RecParticle
  const AliPHOSTrackSegment *ts          = phosLoader->TrackSegment(fPHOSTrackSegment);

  // Get EmcRecPoint corresponding to this TrackSegment
  Int_t emcRecPointIndex = ts->GetEmcIndex();

  const AliPHOSEmcRecPoint  *emcRecPoint = phosLoader->EmcRecPoint(emcRecPointIndex);

  // Get the list of digits forming this EmcRecParticle
  Int_t  nDigits   = emcRecPoint->GetDigitsMultiplicity();
  Int_t *digitList = emcRecPoint->GetDigitsList();

  // Find the digit with maximum amplitude
  Int_t maxAmp = 0;
  Int_t bestDigitIndex = -1;
  for (Int_t iDigit=0; iDigit<nDigits; iDigit++) {
    const AliPHOSDigit * digit = phosLoader->Digit(digitList[iDigit]);
    if (digit->GetAmp() > maxAmp) {
      maxAmp = digit->GetAmp();
      bestDigitIndex = iDigit;
    }
  }
  if (bestDigitIndex>-1) {
    const AliPHOSDigit * digit = phosLoader->Digit(digitList[bestDigitIndex]);
    if (digit==0) return -12345;
  }
  
  // Get the list of primary tracks producing this digit
  // and find which track has more track energy.
  //Int_t nPrimary = digit->GetNprimary();
  //TParticle *track = 0;
  //Double_t energyEM     = 0;
  //Double_t energyHadron = 0;
  //Int_t    trackEM      = -1;
  //Int_t    trackHadron  = -1;
  //for (Int_t iPrim=0; iPrim<nPrimary; iPrim++) {
  //  Int_t iPrimary = digit->GetPrimary(iPrim+1);
  //  if (iPrimary == -1 || TMath::Abs(iPrimary)>10000000)
  //    continue ;  //PH 10000000 is the shift of the track 
  //                //PH indexes in the underlying event
  //  track = gime->Primary(iPrimary);
  //  Int_t pdgCode   = track->GetPdgCode();
  //  Double_t energy = track->Energy();
  //  if (pdgCode==22 || TMath::Abs(pdgCode)==11) {
  //    if (energy > energyEM) {
  //	energyEM = energy;
  //	trackEM = iPrimary;
  //      }
  //   }
  //  else {
  //     if (energy > energyHadron) {
  //	energyHadron = energy;
  //	trackHadron = iPrimary;
	//    }
  //  }
  //}
  // Preferences are given to electromagnetic tracks
  //if (trackEM     != -1) return trackEM;     // track is gamma or e+-
  //if (trackHadron != -1) return trackHadron; // track is hadron
  //return -12345;                             // no track found :(


  // Get the list of hits producing this digit,
  // find which hit has deposited more energy 
  // and find the primary track.

  TClonesArray *hits = phosLoader->Hits();
  if (hits==0) return -12345;

  Double_t maxedep  =  0;
  Int_t    maxtrack = -1;
  Int_t    nHits    = hits ->GetEntries();
  Int_t    id       = (phosLoader->Digit(digitList[bestDigitIndex]))->GetId();

  for (Int_t iHit=0; iHit<nHits; iHit++) {
    const AliPHOSHit * hit = phosLoader->Hit(iHit);
    if(hit->GetId() == id){
      Double_t edep  = hit->GetEnergy();
      Int_t    track = hit->GetPrimary();
      if(edep > maxedep){
	maxedep  = edep;
	maxtrack = track;
      }
    }
  }

  if (maxtrack != -1) return maxtrack; // track is hadron
  return -12345;                       // no track found :(
}

//____________________________________________________________________________
const TParticle * AliPHOSRecParticle::GetPrimary(Int_t index) const  
{
  // Get one of the primary particles at the origine of the RecParticle
  if ( index > GetNPrimariesToRecParticles() ) { 
    if (fDebug) 
      Warning("GetPrimary", "AliPHOSRecParticle::GetPrimary -> %d is larger that the number of primaries %d", 
	      index, GetNPrimaries()) ;
    return 0 ; 
  } 
  else { 
    Int_t dummy ; 
    AliRunLoader* rl = AliRunLoader::Instance() ;
    AliPHOSLoader * phosLoader = static_cast<AliPHOSLoader*>(rl->GetLoader("PHOSLoader"));

    Int_t emcRPindex = static_cast<AliPHOSTrackSegment*>(phosLoader->TrackSegments()->At(GetPHOSTSIndex()))->GetEmcIndex();
    Int_t primaryindex = static_cast<AliPHOSEmcRecPoint*>(phosLoader->EmcRecPoints()->At(emcRPindex))->GetPrimaries(dummy)[index] ; 
    return rl->Stack()->Particle(primaryindex) ;
   } 
  //  return 0 ; 
}

//____________________________________________________________________________
void AliPHOSRecParticle::SetPID(Int_t type, Float_t weight)
{
  // Set the probability densities that this reconstructed particle
  // has a type of i:
  // i       particle types
  // ----------------------
  // 0       electron
  // 1       muon
  // 2       pi+-
  // 3       K+-
  // 4       p/pbar
  // 5       photon
  // 6       pi0 at high pt
  // 7       neutron
  // 8       K0L
  // 9       Conversion electron
  
  fPID[type] = weight ; 
}
Commit	Line	Data
	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	/* $Id$ */
	16	//_________________________________________________________________________
	17	// A Reconstructed Particle in PHOS
	18	// To become a general class of AliRoot ?
	19	// Why should I put meaningless comments
	20	// just to satisfy
	21	// the code checker
	22	//
	23	//*-- Author: Yves Schutz (SUBATECH)
	24
	25
	26	// --- ROOT system ---
	27
	28	// --- Standard library ---
	29
	30
	31	// --- AliRoot header files ---
	32	#include "AliStack.h"
	33	#include "AliPHOSHit.h"
	34	#include "AliPHOSDigit.h"
	35	#include "AliPHOSTrackSegment.h"
	36	#include "AliPHOSEmcRecPoint.h"
	37	#include "AliPHOSRecParticle.h"
	38	#include "AliPHOSLoader.h"
	39	#include "AliPHOSGeometry.h"
	40	#include "AliLog.h"
	41
	42	//____________________________________________________________________________
	43	AliPHOSRecParticle::AliPHOSRecParticle():
	44	fPHOSTrackSegment(0),
	45	fDebug(kFALSE),
	46	fPos()
	47	{
	48	// ctor
	49	const Int_t nSPECIES = AliPID::kSPECIESN;
	50	for(Int_t i = 0; i<nSPECIES ; i++)
	51	fPID[i]=0.;
	52	}
	53
	54
	55	//____________________________________________________________________________
	56	AliPHOSRecParticle::AliPHOSRecParticle(const AliPHOSRecParticle & rp):
	57	AliPHOSFastRecParticle(rp),
	58	fPHOSTrackSegment(rp.fPHOSTrackSegment),
	59	fDebug(kFALSE),
	60	fPos()
	61	{
	62	// copy ctor
	63	fType = rp.fType ;
	64	fIndexInList = rp.fIndexInList ;
	65
	66	fPdgCode = rp.fPdgCode;
	67	fStatusCode = rp.fStatusCode;
	68	fMother[0] = rp.fMother[0];
	69	fMother[1] = rp.fMother[1];
	70	fDaughter[0] = rp.fDaughter[0];
	71	fDaughter[1] = rp.fDaughter[1];
	72	fWeight = rp.fWeight;
	73	fCalcMass = rp.fCalcMass;
	74	fPx = rp.fPx;
	75	fPy = rp.fPy;
	76	fPz = rp.fPz;
	77	fE = rp.fE;
	78	fVx = rp.fVx;
	79	fVy = rp.fVy;
	80	fVz = rp.fVz;
	81	fVt = rp.fVt;
	82	fPolarTheta = rp.fPolarTheta;
	83	fPolarPhi = rp.fPolarPhi;
	84	fParticlePDG = rp.fParticlePDG;
	85	const Int_t nSPECIES = AliPID::kSPECIESN;
	86	for(Int_t i = 0; i<nSPECIES ; i++)
	87	fPID[i]=rp.fPID[i];
	88	}
	89
	90	//____________________________________________________________________________
	91	AliPHOSRecParticle & AliPHOSRecParticle::operator = (const AliPHOSRecParticle &)
	92	{
	93	Fatal("operator =", "not implemented");
	94	return *this;
	95	}
	96
	97	//____________________________________________________________________________
	98	Int_t AliPHOSRecParticle::GetNPrimaries() const
	99	{
	100	return -1;
	101	}
	102
	103	//____________________________________________________________________________
	104	Int_t AliPHOSRecParticle::GetNPrimariesToRecParticles() const
	105	{
	106	// Get the number of primaries at the origine of the RecParticle
	107	Int_t rv = 0 ;
	108	AliRunLoader* rl = AliRunLoader::Instance() ;
	109	AliPHOSLoader * phosLoader = static_cast<AliPHOSLoader*>(rl->GetLoader("PHOSLoader"));
	110	Int_t emcRPindex = static_cast<AliPHOSTrackSegment*>(phosLoader->TrackSegments()->At(GetPHOSTSIndex()))->GetEmcIndex();
	111	static_cast<AliPHOSEmcRecPoint*>(phosLoader->EmcRecPoints()->At(emcRPindex))->GetPrimaries(rv) ;
	112	return rv ;
	113	}
	114
	115	//____________________________________________________________________________
	116	const TParticle * AliPHOSRecParticle::GetPrimary() const
	117	{
	118	// Get the primary particle at the origine of the RecParticle and
	119	// which has deposited the largest energy in SDigits
	120	AliRunLoader* rl = AliRunLoader::Instance() ;
	121	AliPHOSLoader * phosLoader = static_cast<AliPHOSLoader*>(rl->GetLoader("PHOSLoader"));
	122	rl->GetEvent(rl->GetEventNumber()) ;
	123	rl->LoadKinematics("READ");
	124	rl->LoadSDigits("READ");
	125
	126	if(GetNPrimaries() == 0)
	127	return 0 ;
	128	if(GetNPrimaries() == 1)
	129	return GetPrimary(0) ;
	130	Int_t AbsId = 0;
	131	Int_t module ;
	132
	133	// Get PHOS Geometry object
	134	AliPHOSGeometry *geom;
	135	if (!(geom = AliPHOSGeometry::GetInstance()))
	136	geom = AliPHOSGeometry::GetInstance("IHEP","");
	137	Double_t x,z ;
	138	//DP to be fixed: Why do we use this method here??? M.B. use RecPoint???
	139	Double_t vtx[3]={0.,0.,0.} ;
	140	geom->ImpactOnEmc(vtx,static_cast<double>(Theta()),static_cast<double>(Phi()), module,z,x);
	141	Int_t amp = 0 ;
	142	Int_t iPrim=-1 ;
	143	if(module != 0){
	144	geom->RelPosToAbsId(module,x,z,AbsId) ;
	145	TClonesArray * sdigits = phosLoader->SDigits() ;
	146	AliPHOSDigit * sdig ;
	147
	148	for(Int_t i = 0 ; i < sdigits->GetEntriesFast() ; i++){
	149	sdig = static_cast<AliPHOSDigit *>(sdigits->At(i)) ;
	150	if((sdig->GetId() == AbsId)){
	151	if((sdig->GetAmp() > amp) && (sdig->GetNprimary())){
	152	amp = sdig->GetAmp() ;
	153	iPrim = sdig->GetPrimary(1) ;
	154	}
	155	// do not scan rest of list
	156	if(sdig->GetId() > AbsId)
	157	continue ;
	158	}
	159	}
	160	}
	161	if(iPrim >= 0)
	162	return rl->Stack()->Particle(iPrim) ;
	163	else
	164	return 0 ;
	165	}
	166
	167	//____________________________________________________________________________
	168	Int_t AliPHOSRecParticle::GetPrimaryIndex() const
	169	{
	170	// Get the primary track index in TreeK which deposits the most energy
	171	// in Digits which forms EmcRecPoint, which produces TrackSegment,
	172	// which the RecParticle is created from
	173
	174
	175	AliRunLoader* rl = AliRunLoader::Instance() ;
	176	AliPHOSLoader * phosLoader = static_cast<AliPHOSLoader*>(rl->GetLoader("PHOSLoader"));
	177	rl->GetEvent(rl->GetEventNumber()) ;
	178	rl->LoadHits("READ");
	179	rl->LoadDigits("READ");
	180	rl->LoadRecPoints("READ");
	181	rl->LoadTracks("READ");
	182
	183	// Get TrackSegment corresponding to this RecParticle
	184	const AliPHOSTrackSegment *ts = phosLoader->TrackSegment(fPHOSTrackSegment);
	185
	186	// Get EmcRecPoint corresponding to this TrackSegment
	187	Int_t emcRecPointIndex = ts->GetEmcIndex();
	188
	189	const AliPHOSEmcRecPoint *emcRecPoint = phosLoader->EmcRecPoint(emcRecPointIndex);
	190
	191	// Get the list of digits forming this EmcRecParticle
	192	Int_t nDigits = emcRecPoint->GetDigitsMultiplicity();
	193	Int_t *digitList = emcRecPoint->GetDigitsList();
	194
	195	// Find the digit with maximum amplitude
	196	Int_t maxAmp = 0;
	197	Int_t bestDigitIndex = -1;
	198	for (Int_t iDigit=0; iDigit<nDigits; iDigit++) {
	199	const AliPHOSDigit * digit = phosLoader->Digit(digitList[iDigit]);
	200	if (digit->GetAmp() > maxAmp) {
	201	maxAmp = digit->GetAmp();
	202	bestDigitIndex = iDigit;
	203	}
	204	}
	205	if (bestDigitIndex>-1) {
	206	const AliPHOSDigit * digit = phosLoader->Digit(digitList[bestDigitIndex]);
	207	if (digit==0) return -12345;
	208	}
	209
	210	// Get the list of primary tracks producing this digit
	211	// and find which track has more track energy.
	212	//Int_t nPrimary = digit->GetNprimary();
	213	//TParticle *track = 0;
	214	//Double_t energyEM = 0;
	215	//Double_t energyHadron = 0;
	216	//Int_t trackEM = -1;
	217	//Int_t trackHadron = -1;
	218	//for (Int_t iPrim=0; iPrim<nPrimary; iPrim++) {
	219	// Int_t iPrimary = digit->GetPrimary(iPrim+1);
	220	// if (iPrimary == -1 \|\| TMath::Abs(iPrimary)>10000000)
	221	// continue ; //PH 10000000 is the shift of the track
	222	// //PH indexes in the underlying event
	223	// track = gime->Primary(iPrimary);
	224	// Int_t pdgCode = track->GetPdgCode();
	225	// Double_t energy = track->Energy();
	226	// if (pdgCode==22 \|\| TMath::Abs(pdgCode)==11) {
	227	// if (energy > energyEM) {
	228	// energyEM = energy;
	229	// trackEM = iPrimary;
	230	// }
	231	// }
	232	// else {
	233	// if (energy > energyHadron) {
	234	// energyHadron = energy;
	235	// trackHadron = iPrimary;
	236	// }
	237	// }
	238	//}
	239	// Preferences are given to electromagnetic tracks
	240	//if (trackEM != -1) return trackEM; // track is gamma or e+-
	241	//if (trackHadron != -1) return trackHadron; // track is hadron
	242	//return -12345; // no track found :(
	243
	244
	245	// Get the list of hits producing this digit,
	246	// find which hit has deposited more energy
	247	// and find the primary track.
	248
	249	TClonesArray *hits = phosLoader->Hits();
	250	if (hits==0) return -12345;
	251
	252	Double_t maxedep = 0;
	253	Int_t maxtrack = -1;
	254	Int_t nHits = hits ->GetEntries();
	255	Int_t id = (phosLoader->Digit(digitList[bestDigitIndex]))->GetId();
	256
	257	for (Int_t iHit=0; iHit<nHits; iHit++) {
	258	const AliPHOSHit * hit = phosLoader->Hit(iHit);
	259	if(hit->GetId() == id){
	260	Double_t edep = hit->GetEnergy();
	261	Int_t track = hit->GetPrimary();
	262	if(edep > maxedep){
	263	maxedep = edep;
	264	maxtrack = track;
	265	}
	266	}
	267	}
	268
	269	if (maxtrack != -1) return maxtrack; // track is hadron
	270	return -12345; // no track found :(
	271	}
	272
	273	//____________________________________________________________________________
	274	const TParticle * AliPHOSRecParticle::GetPrimary(Int_t index) const
	275	{
	276	// Get one of the primary particles at the origine of the RecParticle
	277	if ( index > GetNPrimariesToRecParticles() ) {
	278	if (fDebug)
	279	Warning("GetPrimary", "AliPHOSRecParticle::GetPrimary -> %d is larger that the number of primaries %d",
	280	index, GetNPrimaries()) ;
	281	return 0 ;
	282	}
	283	else {
	284	Int_t dummy ;
	285	AliRunLoader* rl = AliRunLoader::Instance() ;
	286	AliPHOSLoader * phosLoader = static_cast<AliPHOSLoader*>(rl->GetLoader("PHOSLoader"));
	287
	288	Int_t emcRPindex = static_cast<AliPHOSTrackSegment*>(phosLoader->TrackSegments()->At(GetPHOSTSIndex()))->GetEmcIndex();
	289	Int_t primaryindex = static_cast<AliPHOSEmcRecPoint*>(phosLoader->EmcRecPoints()->At(emcRPindex))->GetPrimaries(dummy)[index] ;
	290	return rl->Stack()->Particle(primaryindex) ;
	291	}
	292	// return 0 ;
	293	}
	294
	295	//____________________________________________________________________________
	296	void AliPHOSRecParticle::SetPID(Int_t type, Float_t weight)
	297	{
	298	// Set the probability densities that this reconstructed particle
	299	// has a type of i:
	300	// i particle types
	301	// ----------------------
	302	// 0 electron
	303	// 1 muon
	304	// 2 pi+-
	305	// 3 K+-
	306	// 4 p/pbar
	307	// 5 photon
	308	// 6 pi0 at high pt
	309	// 7 neutron
	310	// 8 K0L
	311	// 9 Conversion electron
	312
	313	fPID[type] = weight ;
	314	}