[u/mrichter/AliRoot.git] / HMPID / AliHMPIDTracker.cxx

#include "AliHMPIDTracker.h"     //class header
#include "AliHMPIDtrack.h"       //class header
#include "AliHMPIDCluster.h"     //GetTrackPoint(),PropagateBack() 
#include "AliHMPIDParam.h"       //GetTrackPoint(),PropagateBack()
#include "AliHMPIDPid.h"         //Recon(),reconHTA()
#include "AliHMPIDRecon.h"       //Recon()
#include "AliHMPIDRecoParam.h"   //Recon()
#include "AliHMPIDReconstructor.h"//Recon()
#include "AliHMPIDReconHTA.h"    //ReconHTA()
#include <AliESDEvent.h>         //PropagateBack(),Recon()  
#include <AliESDtrack.h>         //Intersect() 
#include <AliTracker.h> 
#include <AliRun.h>              //GetTrackPoint(),PropagateBack()  
#include <AliTrackPointArray.h>  //GetTrackPoint()
#include <AliAlignObj.h>         //GetTrackPoint()
#include <AliCDBManager.h>       //PropageteBack()
#include <AliCDBEntry.h>         //PropageteBack()
#include "AliHMPIDRecoParam.h"   //Recon()
//.
// HMPID base class fo tracking
//.
//.
//.
ClassImp(AliHMPIDTracker)
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
AliHMPIDTracker::AliHMPIDTracker():
  AliTracker(),
  fClu(new TObjArray(AliHMPIDParam::kMaxCh+1))  
{
// ctor. Create TObjArray of TClonesArray of AliHMPIDCluster  
// 
//  
  fClu->SetOwner(kTRUE);
  for(int i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++) fClu->AddAt(new TClonesArray("AliHMPIDCluster"),i);
}//ctor
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++    
Bool_t AliHMPIDTracker::GetTrackPoint(Int_t idx, AliTrackPoint& point) const
{
// Interface callback methode invoked from AliReconstruction::WriteAlignmentData() to get position of MIP cluster in MARS associated to a current track.
// MIP cluster is reffered by index which is stored in AliESDtrack  ???????
// Arguments: idx- cluster index which is stored by HMPID in AliESDtrack
//            point- reference to the object where to store the point     
//   Returns: status of operation  if FALSE then AliReconstruction::WriteAlignmentData() do not store this point to array of points for current track. 
  if(idx<0) return kFALSE; //no MIP cluster assigned to this track in PropagateBack()
  Int_t iCham=idx/1000000; Int_t iClu=idx%1000000;
  iClu = iClu%1000; //GetHMPIDcluIdx -> 1e+6*ch + 1e+3*clusize + cluIdx;
  point.SetVolumeID(AliGeomManager::LayerToVolUID(AliGeomManager::kHMPID,iCham));//layer and chamber number
  TClonesArray *pArr=(TClonesArray*)(*fClu)[iCham];
  AliHMPIDCluster *pClu=(AliHMPIDCluster*)pArr->UncheckedAt(iClu);//get pointer to cluster
  Float_t xyz[3];
  pClu->GetGlobalXYZ(xyz);
  Float_t cov[6];
  pClu->GetGlobalCov(cov);
  point.SetXYZ(xyz,cov);
  return kTRUE;
}//GetTrackPoint()
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Int_t AliHMPIDTracker::IntTrkCha(AliESDtrack *pTrk,Float_t &xPc,Float_t &yPc,Float_t &xRa,Float_t &yRa,Float_t &theta,Float_t &phi)
{
// Static method to find intersection in between given track and HMPID chambers
// Arguments: pTrk- ESD track; xPc,yPc- track intersection with PC in LORS [cm]
//   Returns: intersected chamber ID or -1
  AliHMPIDtrack *hmpTrk = new AliHMPIDtrack(*pTrk);                                             //create a hmpid track to be used for propagation and matching 
  for(Int_t i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++){                              //chambers loop
    Int_t chInt = IntTrkCha(i,hmpTrk,xPc,yPc,xRa,yRa,theta,phi);
    if(chInt>=0) {delete hmpTrk;hmpTrk=0x0;return chInt;}
  }                                                                                             //chambers loop
  delete hmpTrk; hmpTrk=0x0;
  return -1;                                                                                    //no intersection with HMPID chambers
}//IntTrkCha()
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Int_t AliHMPIDTracker::IntTrkCha(Int_t ch,AliHMPIDtrack *pTrk,Float_t &xPc,Float_t &yPc,Float_t &xRa,Float_t &yRa,Float_t &theta,Float_t &phi)
{
// Static method to find intersection in between given track and HMPID chambers
// Arguments: pTrk- HMPID track; xPc,yPc- track intersection with PC in LORS [cm]
//   Returns: intersected chamber ID or -1
    AliHMPIDParam *pParam=AliHMPIDParam::Instance();
    Double_t p1[3],n1[3]; 
    pParam->Norm(ch,n1); 
    pParam->Point(ch,p1,AliHMPIDParam::kRad);                                                    //point & norm  for middle of radiator plane
    Double_t p2[3],n2[3]; 
    pParam->Norm(ch,n2);
    pParam->Point(ch,p2,AliHMPIDParam::kPc);                                                     //point & norm  for entrance to PC plane
    if(pTrk->Intersect(p1,n1)==kFALSE) return -1;                                                //try to intersect track with the middle of radiator
    if(pTrk->Intersect(p2,n2)==kFALSE) return -1;   
    pParam->Mars2LorsVec(ch,n1,theta,phi);                                                       //track angles at RAD
    pParam->Mars2Lors   (ch,p1,xRa,yRa);                                                         //TRKxRAD position
    pParam->Mars2Lors   (ch,p2,xPc,yPc);                                                         //TRKxPC position
    if(AliHMPIDParam::IsInside(xPc,yPc,pParam->DistCut())==kTRUE) return ch;                     //return intersected chamber  
  return -1;                                                                                     //no intersection with HMPID chambers
}//IntTrkCha()
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Int_t AliHMPIDTracker::LoadClusters(TTree *pCluTree)
{
// Interface callback methode invoked from AliReconstruction::RunTracking() to load HMPID clusters before PropagateBack() gets control. Done once per event.
// Arguments: pCluTree- pointer to clusters tree got by AliHMPIDLoader::LoadRecPoints("read") then AliHMPIDLoader::TreeR()
//   Returns: error code (currently ignored in AliReconstruction::RunTraking())    
  for(int i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++) pCluTree->SetBranchAddress(Form("HMPID%d",i),&((*fClu)[i]));
  pCluTree->GetEntry(0);
  return 0;  
}//LoadClusters()
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Int_t AliHMPIDTracker::PropagateBack(AliESDEvent *pEsd)
{
// Interface pure virtual in AliTracker. Invoked from AliReconstruction::RunTracking() after invocation of AliTracker::LoadClusters() once per event
// Agruments: pEsd - pointer to ESD
//   Returns: error code    
  AliCDBEntry *pNmeanEnt =AliCDBManager::Instance()->Get("HMPID/Calib/Nmean"); //contains TObjArray of 42 TF1 + 1 EPhotMean
  AliCDBEntry *pQthreEnt =AliCDBManager::Instance()->Get("HMPID/Calib/Qthre"); //contains TObjArray of 42 (7ch * 6sec) TF1
  if(!pNmeanEnt) AliError("No Nmean C6F14 ");
  if(!pQthreEnt) AliError("No Qthre");
    
  return Recon(pEsd,fClu,(TObjArray*)pNmeanEnt->GetObject(),(TObjArray*)pQthreEnt->GetObject());  
}//PropagateBack()
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Int_t AliHMPIDTracker::Recon(AliESDEvent *pEsd,TObjArray *pClus,TObjArray *pNmean, TObjArray *pQthre)
{
// Static method to reconstruct Theta Ckov for all valid tracks of a given event.
// Arguments: pEsd- pointer ESD; pClu- pointer to clusters for all chambers; pNmean - pointer to all function Nmean=f(time)
//   Returns: error code, 0 if no errors   
  
  AliHMPIDRecon recon;                                                                           //instance of reconstruction class, nothing important in ctor
  AliHMPIDParam *pParam = AliHMPIDParam::Instance();                                             //Instance of AliHMPIDParam
  Float_t xPc,yPc,xRa,yRa,theta,phi;
  Double_t cluLORS[2]={0};
//  Double_t cluMARS[3]={0},trkMARS[3]={0};
//  Double_t bestcluMARS[3]={0,0,0};
//  Double_t radClu,radInitTrk;   
  Int_t nMipClusTot=0;
//  Double_t d3d=0;
  Double_t qthre = 0;   Double_t nmean=0; Int_t hvsec=0;
  Int_t nClusCh[AliHMPIDParam::kMaxCh+1];
 
  
  for(Int_t iTrk=0;iTrk<pEsd->GetNumberOfTracks();iTrk++){                                        //loop on the ESD tracks in the event
           
//    Double_t bestChi2=99999;chi2=99999;                                                          //init. track matching params
    Double_t dmin=999999,bz=0,distCut=1,distParams[5]={1};

    Bool_t isOkDcut=kFALSE;
    Bool_t isOkQcut=kFALSE;
    Bool_t isMatched=kFALSE;
    
    AliHMPIDCluster *bestHmpCluster=0x0;                                                          //the best matching cluster
    AliESDtrack *pTrk = pEsd->GetTrack(iTrk);                                                     //get reconstructed track   
    
    if(!pTrk->IsOn(AliESDtrack::kTPCout)) continue;
 
    if(pTrk->IsOn(AliESDtrack::kTPCrefit)) continue;
 
    AliHMPIDtrack *hmpTrk = new AliHMPIDtrack(*pTrk);                                             //create a hmpid track to be used for propagation and matching 
    bz=AliTracker::GetBz();  
//initial flags for HMPID ESD infos    
    pTrk->SetHMPIDtrk(0,0,0,0);                                                                //no intersection found
    pTrk->SetHMPIDmip(0,0,0,0);                                                                //store mip info in any case 
    pTrk->SetHMPIDcluIdx(99,99999);                                                            //chamber not found, mip not yet considered
    pTrk->SetHMPIDsignal(AliHMPIDRecon::kNotPerformed);                                        //ring reconstruction not yet performed
    
    Int_t ipCh=IntTrkCha(pTrk,xPc,yPc,xRa,yRa,theta,phi);                                        //find the intersected chamber for this track 
    if(ipCh<0) continue;                                                                         //no intersection at all, go after next track

    pTrk->SetHMPIDtrk(xPc,yPc,theta,phi);                                                        //store initial infos
    pTrk->SetHMPIDcluIdx(ipCh,9999);                                                             //set chamber, index of cluster + cluster size
    
// track intersects the chamber ipCh: find the MIP          
    
    TClonesArray *pMipCluLst=(TClonesArray *)pClus->At(ipCh);                                   //get the list of clusters
    nMipClusTot = pMipCluLst->GetEntries();                                                     //total number of clusters in the given chamber
    nClusCh[ipCh] = nMipClusTot;
    
    if(nMipClusTot==0) continue;                                                                         
    
    Int_t index=-1;                                                                             //index of the "best" matching cluster
    
    for (Int_t iClu=0; iClu<nMipClusTot;iClu++) {                                               //clusters loop
      
      AliHMPIDCluster *pClu=(AliHMPIDCluster*)pMipCluLst->UncheckedAt(iClu);                    //get the cluster
// evaluate qThre
      if(pQthre->GetEntriesFast()==pParam->kMaxCh+1) {                                             // just for backward compatibility
        qthre=((TF1*)pQthre->At(pClu->Ch()))->Eval(pEsd->GetTimeStamp());                          //
      } else {                                                                                     // in the past just 1 qthre
        hvsec = pParam->InHVSector(pClu->Y());                                              //  per chamber
        if(hvsec>=0)
	  qthre=((TF1*)pQthre->At(6*ipCh+hvsec))->Eval(pEsd->GetTimeStamp());                      //
      }                                                                                            //
//
      if(pClu->Q()<qthre) continue;                                                                      //charge compartible with MIP clusters      
      isOkQcut = kTRUE;
//
      cluLORS[0]=pClu->X(); cluLORS[1]=pClu->Y();                                            //get the LORS coordinates of the cluster
      Double_t dist = TMath::Sqrt((xPc-cluLORS[0])*(xPc-cluLORS[0])+(yPc-cluLORS[1])*(yPc-cluLORS[1]));
      
      if(dist<dmin) {
        dmin = dist;
        index=iClu;
        bestHmpCluster=pClu;
      }
    }

    if(!isOkQcut) {
      pTrk->SetHMPIDsignal(pParam->kMipQdcCut);
      continue;                                                                     
    }

    Double_t radius = (pParam->Lors2Mars(ipCh,pParam->SizeAllX()/2,pParam->SizeAllY()/2)).Mag(); 
    
    if(!AliTracker::PropagateTrackToBxByBz(hmpTrk,radius,pTrk->GetMass(),1,kFALSE)) continue;
              
    if(!hmpTrk->PropagateTo(bestHmpCluster)) continue;

    Int_t cluSiz = bestHmpCluster->Size();
    pTrk->SetHMPIDmip(bestHmpCluster->X(),bestHmpCluster->Y(),(Int_t)bestHmpCluster->Q(),0);  //store mip info in any case 
    pTrk->SetHMPIDcluIdx(ipCh,index+1000*cluSiz);                                             //set chamber, index of cluster + cluster size

    if(AliHMPIDReconstructor::GetRecoParam())                                                 //retrieve distance cut
    {
      AliHMPIDReconstructor::GetRecoParam()->PrintParameters();
      if(AliHMPIDReconstructor::GetRecoParam()->IsFixedDistCut()==kTRUE)                      //distance cut is fixed number
      { 
        distCut=AliHMPIDReconstructor::GetRecoParam()->GetHmpTrackMatchingDist();
      }
      else 
      {
        for(Int_t ipar=0;ipar<5;ipar++) distParams[ipar]=AliHMPIDReconstructor::GetRecoParam()->GetHmpTrackMatchingDistParam(ipar);      //prevision: distance cut is function of momentum
        distCut=distParams[0]+distParams[1]*TMath::Power(distParams[2]*pTrk->GetP(),distParams[3]); //prevision: change functional form to be more precise
      }
    }
    else {distCut=pParam->DistCut();}
      
    if(dmin < distCut) {
      isOkDcut = kTRUE;
    }

    
    
    if(!isOkDcut) {
      pTrk->SetHMPIDsignal(pParam->kMipDistCut);                                                //closest cluster with enough charge is still too far from intersection
    }
    
    if(isOkQcut*isOkDcut) isMatched = kTRUE;                                                    // MIP-Track matched !!    
    
    if(!isMatched) continue;                                                                    // If matched continue...

    Bool_t isOk = hmpTrk->Update(bestHmpCluster,0.1,0);
    if(!isOk) continue;
    pTrk->SetOuterHmpParam(hmpTrk,AliESDtrack::kHMPIDout);                 

    FillResiduals(hmpTrk,bestHmpCluster,kFALSE);
 
    
    //evaluate nMean
    if(pNmean->GetEntries()==21) {                                                              //for backward compatibility
      nmean=((TF1*)pNmean->At(3*ipCh))->Eval(pEsd->GetTimeStamp());                             //C6F14 Nmean for this chamber
    } else {
      Int_t iRad     = pParam->Radiator(yRa);                                                   //evaluate the radiator involved
      if(iRad < 0) {
	nmean = -1;
      } else {
      Double_t tLow  = ((TF1*)pNmean->At(6*ipCh+2*iRad  ))->Eval(pEsd->GetTimeStamp());         //C6F14 low  temp for this chamber
      Double_t tHigh = ((TF1*)pNmean->At(6*ipCh+2*iRad+1))->Eval(pEsd->GetTimeStamp());         //C6F14 high temp for this chamber
      Double_t tExp  = pParam->FindTemp(tLow,tHigh,yRa);                                        //estimated temp for that chamber at that y
      nmean = pParam->NIdxRad(AliHMPIDParam::Instance()->GetEPhotMean(),tExp);                  //mean ref idx @ a given temp
      }
      if(nmean < 0){                                                                            //track didn' t pass through the radiator
         pTrk->SetHMPIDsignal(AliHMPIDRecon::kNoRad);                                           //set the appropriate flag
         pTrk->SetHMPIDcluIdx(ipCh,index+1000*cluSiz);                                          //set index of cluster
         continue;
      }
    }
    //
    recon.SetImpPC(xPc,yPc);                                                                     //store track impact to PC
    recon.CkovAngle(pTrk,(TClonesArray *)pClus->At(ipCh),index,nmean,xRa,yRa);                   //search for Cerenkov angle of this track

    if(pTrk->GetHMPIDsignal()<0) continue;
        
    AliHMPIDPid pID;
    Double_t prob[5];
    pID.FindPid(pTrk,5,prob);
    pTrk->SetHMPIDpid(prob);
//      Printf(" Prob e- %6.2f mu %6.2f pi %6.2f k %6.2f p %6.2f",prob[0]*100,prob[1]*100,prob[2]*100,prob[3]*100,prob[4]*100);

    delete hmpTrk;hmpTrk=0x0;
  }//iTrk

  return 0; // error code: 0=no error;
}//Recon()
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Int_t AliHMPIDTracker::ReconHiddenTrk(AliESDEvent *pEsd,TObjArray *pClus,TObjArray *pNmean, TObjArray *pQthre)
{
// Static method to reconstruct Theta Ckov for all valid tracks of a given event.
// Arguments: pEsd- pointer ESD; pClu- pointer to clusters for all chambers; pNmean - pointer to all function Nmean=f(time), pQthre - pointer to all function Qthre=f(time)
//   Returns: error code, 0 if no errors
  
  AliHMPIDReconHTA reconHTA;                                                                     //instance of reconstruction class, nothing important in ctor
  
  AliHMPIDParam *pParam = AliHMPIDParam::Instance();                                             //Instance of AliHMPIDParam
  
  for(Int_t iTrk=0;iTrk<pEsd->GetNumberOfTracks();iTrk++){                                        //loop on the ESD tracks in the event
    
    AliESDtrack *pTrk = pEsd->GetTrack(iTrk);                                                     //here it is simulated or just empty track
    Int_t ipCh;
    ipCh = pTrk->GetHMPIDcluIdx();ipCh/=1000000;
    if(ipCh<0) continue;

    TClonesArray *pMipCluLst=(TClonesArray *)pClus->At(ipCh);                                   //get the list of clusters
    Int_t nMipClusTot = pMipCluLst->GetEntries();                                               //total number of clusters in the given chamber
    
    Double_t qMip=-1;
    Int_t chMip=-1;    
    Double_t xMip = 0;
    Double_t yMip = 0;
    Int_t indMip  = 0;
    Int_t cluMipSiz = 0;

    for (Int_t iClu=0; iClu<nMipClusTot;iClu++) {                                               //clusters loop
      
      AliHMPIDCluster *pClu=(AliHMPIDCluster*)pMipCluLst->UncheckedAt(iClu);                    //get the cluster
      Double_t qClus = pClu->Q();
      if(qClus>qMip) {
        qMip  = qClus;
        chMip = pClu->Ch();
        xMip = pClu->X();
        yMip = pClu->Y();
        indMip = iClu;
        cluMipSiz = pClu->Size();
      }
    }//clus loop

    if(chMip<0) return 1;    
    
    Int_t hvsec;
    Double_t qthre=0;
// evaluate qThre
    if(pQthre->GetEntriesFast()==pParam->kMaxCh+1) {                                              // just for backward compatibility
      qthre=((TF1*)pQthre->At(chMip))->Eval(pEsd->GetTimeStamp());                                //
    } else {                                                                                      // in the past just 1 qthre
      hvsec = pParam->InHVSector(yMip);                                                           //  per chamber
      if(hvsec>=0) qthre=((TF1*)pQthre->At(6*chMip+hvsec))->Eval(pEsd->GetTimeStamp());           //
    }
//
    if(qMip<qthre) {
      pTrk->SetHMPIDmip(xMip,yMip,(Int_t)qMip,0);                                                        //store mip info in any case 
      pTrk->SetHMPIDcluIdx(chMip,indMip+1000*cluMipSiz);                                                          
      pTrk->SetHMPIDsignal(pParam->kMipQdcCut);
      return 1;                                                                                   //charge compatible with MIP clusters      
    }
      
    pTrk->SetHMPIDmip(xMip,yMip,(Int_t)qMip,0);                                                   //store mip info in any case 
    pTrk->SetHMPIDcluIdx(chMip,indMip+1000*cluMipSiz);                                                          

    Double_t yRa = yMip;                                                                        //just an approx...
    Double_t nmean;
    //evaluate nMean
    if(pNmean->GetEntries()==21) {                                                              //for backward compatibility
      nmean=((TF1*)pNmean->At(3*chMip))->Eval(pEsd->GetTimeStamp());                            //C6F14 Nmean for this chamber
    } else {
      Int_t iRad     = pParam->Radiator(yRa);                                                   //evaluate the radiator involved
      if(iRad < 0) {
	nmean = -1;
      } else {
      Double_t tLow  = ((TF1*)pNmean->At(6*chMip+2*iRad  ))->Eval(pEsd->GetTimeStamp());        //C6F14 low  temp for this chamber
      Double_t tHigh = ((TF1*)pNmean->At(6*chMip+2*iRad+1))->Eval(pEsd->GetTimeStamp());        //C6F14 high temp for this chamber
      Double_t tExp  = pParam->FindTemp(tLow,tHigh,yRa);                                        //estimated temp for that chamber at that y
      nmean = pParam->NIdxRad(AliHMPIDParam::Instance()->GetEPhotMean(),tExp);                  //mean ref idx @ a given temp
      }
      if(nmean < 0){                                                                            //track didn' t pass through the radiator
         pTrk->SetHMPIDsignal(AliHMPIDRecon::kNoRad);                                           //set the appropriate flag
         return 1;
      }
    }
    //
    if(!reconHTA.CkovHiddenTrk(pTrk,(TClonesArray *)pClus->At(ipCh),indMip,nmean)) {                 //search for track parameters and Cerenkov angle of this track
      AliHMPIDPid pID;
      Double_t prob[5];
      pID.FindPid(pTrk,5,prob);
      pTrk->SetHMPIDpid(prob);
    }
//      Printf(" Prob e- %6.2f mu %6.2f pi %6.2f k %6.2f p %6.2f",prob[0]*100,prob[1]*100,prob[2]*100,prob[3]*100,prob[4]*100);
  }//iTrk

  return 0; // error code: 0=no error;

}//Recon()
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
void AliHMPIDTracker::FillClusterArray(TObjArray* array) const {
  
 // Publishes all pointers to clusters known to the tracker into the
  // passed object array.
  // The ownership is not transfered - the caller is not expected to delete
  // the clusters
 
  for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++){    
    TClonesArray *pCluArr=(TClonesArray*)(*fClu)[iCh];
    for (Int_t iClu=0; iClu<pCluArr->GetEntriesFast();iClu++){
      AliHMPIDCluster *pClu=(AliHMPIDCluster*)pCluArr->UncheckedAt(iClu);    
      array->AddLast(pClu);
    }//cluster loop in iCh
    pCluArr->Delete();
  }//Ch loop
    
  return;
}
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Commit	Line	Data
3c6274c1	1	#include "AliHMPIDTracker.h" //class header
e56b695f	2	#include "AliHMPIDtrack.h" //class header
3c6274c1	3	#include "AliHMPIDCluster.h" //GetTrackPoint(),PropagateBack()
3c6274c1	4	#include "AliHMPIDParam.h" //GetTrackPoint(),PropagateBack()
e56b695f	5	#include "AliHMPIDPid.h" //Recon(),reconHTA()
59d9d4b3	6	#include "AliHMPIDRecon.h" //Recon()
b8541917	7	#include "AliHMPIDRecoParam.h" //Recon()
b8541917	8	#include "AliHMPIDReconstructor.h"//Recon()
57fcdc2b	9	#include "AliHMPIDReconHTA.h" //ReconHTA()
57fcdc2b	10	#include <AliESDEvent.h> //PropagateBack(),Recon()
c38d443f	11	#include <AliESDtrack.h> //Intersect()
c38d443f	12	#include <AliTracker.h>
d3da6dc4	13	#include <AliRun.h> //GetTrackPoint(),PropagateBack()
	14	#include <AliTrackPointArray.h> //GetTrackPoint()
	15	#include <AliAlignObj.h> //GetTrackPoint()
59d9d4b3	16	#include <AliCDBManager.h> //PropageteBack()
59d9d4b3	17	#include <AliCDBEntry.h> //PropageteBack()
b8541917	18	#include "AliHMPIDRecoParam.h" //Recon()
423554a3	19	//.
	20	// HMPID base class fo tracking
	21	//.
	22	//.
	23	//.
d3da6dc4	24	ClassImp(AliHMPIDTracker)
94b1fbfa	25	//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
c61a7285	26	AliHMPIDTracker::AliHMPIDTracker():
	27	AliTracker(),
	28	fClu(new TObjArray(AliHMPIDParam::kMaxCh+1))
94b1fbfa	29	{
59d9d4b3	30	// ctor. Create TObjArray of TClonesArray of AliHMPIDCluster
	31	//
	32	//
c61a7285	33	fClu->SetOwner(kTRUE);
ae5a42aa	34	for(int i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++) fClu->AddAt(new TClonesArray("AliHMPIDCluster"),i);
59d9d4b3	35	}//ctor
d3da6dc4	36	//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
	37	Bool_t AliHMPIDTracker::GetTrackPoint(Int_t idx, AliTrackPoint& point) const
	38	{
	39	// Interface callback methode invoked from AliReconstruction::WriteAlignmentData() to get position of MIP cluster in MARS associated to a current track.
	40	// MIP cluster is reffered by index which is stored in AliESDtrack ???????
	41	// Arguments: idx- cluster index which is stored by HMPID in AliESDtrack
	42	// point- reference to the object where to store the point
	43	// Returns: status of operation if FALSE then AliReconstruction::WriteAlignmentData() do not store this point to array of points for current track.
	44	if(idx<0) return kFALSE; //no MIP cluster assigned to this track in PropagateBack()
59d9d4b3	45	Int_t iCham=idx/1000000; Int_t iClu=idx%1000000;
2247c219	46	iClu = iClu%1000; //GetHMPIDcluIdx -> 1e+6ch + 1e+3clusize + cluIdx;
2247c219	47	point.SetVolumeID(AliGeomManager::LayerToVolUID(AliGeomManager::kHMPID,iCham));//layer and chamber number
94b1fbfa	48	TClonesArray pArr=(TClonesArray)(*fClu)[iCham];
94b1fbfa	49	AliHMPIDCluster pClu=(AliHMPIDCluster)pArr->UncheckedAt(iClu);//get pointer to cluster
2247c219	50	Float_t xyz[3];
	51	pClu->GetGlobalXYZ(xyz);
	52	Float_t cov[6];
	53	pClu->GetGlobalCov(cov);
	54	point.SetXYZ(xyz,cov);
d3da6dc4	55	return kTRUE;
59d9d4b3	56	}//GetTrackPoint()
59d9d4b3	57	//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
39cd22e6	58	Int_t AliHMPIDTracker::IntTrkCha(AliESDtrack *pTrk,Float_t &xPc,Float_t &yPc,Float_t &xRa,Float_t &yRa,Float_t &theta,Float_t &phi)
59d9d4b3	59	{
	60	// Static method to find intersection in between given track and HMPID chambers
	61	// Arguments: pTrk- ESD track; xPc,yPc- track intersection with PC in LORS [cm]
	62	// Returns: intersected chamber ID or -1
b4866751	63	AliHMPIDtrack hmpTrk = new AliHMPIDtrack(pTrk); //create a hmpid track to be used for propagation and matching
ae5a42aa	64	for(Int_t i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++){ //chambers loop
b4866751	65	Int_t chInt = IntTrkCha(i,hmpTrk,xPc,yPc,xRa,yRa,theta,phi);
b4866751	66	if(chInt>=0) {delete hmpTrk;hmpTrk=0x0;return chInt;}
59d9d4b3	67	} //chambers loop
b4866751	68	delete hmpTrk; hmpTrk=0x0;
39cd22e6	69	return -1; //no intersection with HMPID chambers
59d9d4b3	70	}//IntTrkCha()
d3da6dc4	71	//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
496c71b0	72	Int_t AliHMPIDTracker::IntTrkCha(Int_t ch,AliHMPIDtrack *pTrk,Float_t &xPc,Float_t &yPc,Float_t &xRa,Float_t &yRa,Float_t &theta,Float_t &phi)
	73	{
	74	// Static method to find intersection in between given track and HMPID chambers
	75	// Arguments: pTrk- HMPID track; xPc,yPc- track intersection with PC in LORS [cm]
	76	// Returns: intersected chamber ID or -1
	77	AliHMPIDParam *pParam=AliHMPIDParam::Instance();
	78	Double_t p1[3],n1[3];
	79	pParam->Norm(ch,n1);
	80	pParam->Point(ch,p1,AliHMPIDParam::kRad); //point & norm for middle of radiator plane
	81	Double_t p2[3],n2[3];
b4866751	82	pParam->Norm(ch,n2);
496c71b0	83	pParam->Point(ch,p2,AliHMPIDParam::kPc); //point & norm for entrance to PC plane
97a4d538	84	if(pTrk->Intersect(p1,n1)==kFALSE) return -1; //try to intersect track with the middle of radiator
97a4d538	85	if(pTrk->Intersect(p2,n2)==kFALSE) return -1;
496c71b0	86	pParam->Mars2LorsVec(ch,n1,theta,phi); //track angles at RAD
	87	pParam->Mars2Lors (ch,p1,xRa,yRa); //TRKxRAD position
	88	pParam->Mars2Lors (ch,p2,xPc,yPc); //TRKxPC position
	89	if(AliHMPIDParam::IsInside(xPc,yPc,pParam->DistCut())==kTRUE) return ch; //return intersected chamber
	90	return -1; //no intersection with HMPID chambers
	91	}//IntTrkCha()
	92	//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
d3da6dc4	93	Int_t AliHMPIDTracker::LoadClusters(TTree *pCluTree)
d3da6dc4	94	{
59d9d4b3	95	// Interface callback methode invoked from AliReconstruction::RunTracking() to load HMPID clusters before PropagateBack() gets control. Done once per event.
d3da6dc4	96	// Arguments: pCluTree- pointer to clusters tree got by AliHMPIDLoader::LoadRecPoints("read") then AliHMPIDLoader::TreeR()
d3da6dc4	97	// Returns: error code (currently ignored in AliReconstruction::RunTraking())
ae5a42aa	98	for(int i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++) pCluTree->SetBranchAddress(Form("HMPID%d",i),&((*fClu)[i]));
94b1fbfa	99	pCluTree->GetEntry(0);
94b1fbfa	100	return 0;
59d9d4b3	101	}//LoadClusters()
d3da6dc4	102	//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
af885e0f	103	Int_t AliHMPIDTracker::PropagateBack(AliESDEvent *pEsd)
abb5f786	104	{
59d9d4b3	105	// Interface pure virtual in AliTracker. Invoked from AliReconstruction::RunTracking() after invocation of AliTracker::LoadClusters() once per event
abb5f786	106	// Agruments: pEsd - pointer to ESD
abb5f786	107	// Returns: error code
f455af6e	108	AliCDBEntry *pNmeanEnt =AliCDBManager::Instance()->Get("HMPID/Calib/Nmean"); //contains TObjArray of 42 TF1 + 1 EPhotMean
49881df7	109	AliCDBEntry pQthreEnt =AliCDBManager::Instance()->Get("HMPID/Calib/Qthre"); //contains TObjArray of 42 (7ch 6sec) TF1
0a7c7084	110	if(!pNmeanEnt) AliError("No Nmean C6F14 ");
0a7c7084	111	if(!pQthreEnt) AliError("No Qthre");
94b1fbfa	112
afe12692	113	return Recon(pEsd,fClu,(TObjArray)pNmeanEnt->GetObject(),(TObjArray)pQthreEnt->GetObject());
611e810d	114	}//PropagateBack()
abb5f786	115	//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
afe12692	116	Int_t AliHMPIDTracker::Recon(AliESDEvent pEsd,TObjArray pClus,TObjArray pNmean, TObjArray pQthre)
d3da6dc4	117	{
59d9d4b3	118	// Static method to reconstruct Theta Ckov for all valid tracks of a given event.
59d9d4b3	119	// Arguments: pEsd- pointer ESD; pClu- pointer to clusters for all chambers; pNmean - pointer to all function Nmean=f(time)
d3da6dc4	120	// Returns: error code, 0 if no errors
496c71b0	121
496c71b0	122	AliHMPIDRecon recon; //instance of reconstruction class, nothing important in ctor
b8541917	123	AliHMPIDParam *pParam = AliHMPIDParam::Instance(); //Instance of AliHMPIDParam
39cd22e6	124	Float_t xPc,yPc,xRa,yRa,theta,phi;
43e51ec6	125	Double_t cluLORS[2]={0};
43e51ec6	126	// Double_t cluMARS[3]={0},trkMARS[3]={0};
496c71b0	127	// Double_t bestcluMARS[3]={0,0,0};
43e51ec6	128	// Double_t radClu,radInitTrk;
496c71b0	129	Int_t nMipClusTot=0;
43e51ec6	130	// Double_t d3d=0;
84770d7b	131	Double_t qthre = 0; Double_t nmean=0; Int_t hvsec=0;
496c71b0	132	Int_t nClusCh[AliHMPIDParam::kMaxCh+1];
b8541917	133
496c71b0	134
496c71b0	135	for(Int_t iTrk=0;iTrk<pEsd->GetNumberOfTracks();iTrk++){ //loop on the ESD tracks in the event
c38d443f	136
43e51ec6	137	// Double_t bestChi2=99999;chi2=99999; //init. track matching params
b8541917	138	Double_t dmin=999999,bz=0,distCut=1,distParams[5]={1};
43e51ec6	139
	140	Bool_t isOkDcut=kFALSE;
	141	Bool_t isOkQcut=kFALSE;
	142	Bool_t isMatched=kFALSE;
	143
496c71b0	144	AliHMPIDCluster *bestHmpCluster=0x0; //the best matching cluster
c38d443f	145	AliESDtrack *pTrk = pEsd->GetTrack(iTrk); //get reconstructed track
	146
	147	if(!pTrk->IsOn(AliESDtrack::kTPCout)) continue;
	148
	149	if(pTrk->IsOn(AliESDtrack::kTPCrefit)) continue;
	150
496c71b0	151	AliHMPIDtrack hmpTrk = new AliHMPIDtrack(pTrk); //create a hmpid track to be used for propagation and matching
496c71b0	152	bz=AliTracker::GetBz();
43e51ec6	153	//initial flags for HMPID ESD infos
	154	pTrk->SetHMPIDtrk(0,0,0,0); //no intersection found
	155	pTrk->SetHMPIDmip(0,0,0,0); //store mip info in any case
	156	pTrk->SetHMPIDcluIdx(99,99999); //chamber not found, mip not yet considered
	157	pTrk->SetHMPIDsignal(AliHMPIDRecon::kNotPerformed); //ring reconstruction not yet performed
496c71b0	158
af291e40	159	Int_t ipCh=IntTrkCha(pTrk,xPc,yPc,xRa,yRa,theta,phi); //find the intersected chamber for this track
43e51ec6	160	if(ipCh<0) continue; //no intersection at all, go after next track
43e51ec6	161
97a4d538	162	pTrk->SetHMPIDtrk(xPc,yPc,theta,phi); //store initial infos
43e51ec6	163	pTrk->SetHMPIDcluIdx(ipCh,9999); //set chamber, index of cluster + cluster size
496c71b0	164
	165	// track intersects the chamber ipCh: find the MIP
	166
	167	TClonesArray pMipCluLst=(TClonesArray )pClus->At(ipCh); //get the list of clusters
	168	nMipClusTot = pMipCluLst->GetEntries(); //total number of clusters in the given chamber
	169	nClusCh[ipCh] = nMipClusTot;
	170
43e51ec6	171	if(nMipClusTot==0) continue;
	172
	173	Int_t index=-1; //index of the "best" matching cluster
	174
496c71b0	175	for (Int_t iClu=0; iClu<nMipClusTot;iClu++) { //clusters loop
	176
	177	AliHMPIDCluster pClu=(AliHMPIDCluster)pMipCluLst->UncheckedAt(iClu); //get the cluster
	178	// evaluate qThre
	179	if(pQthre->GetEntriesFast()==pParam->kMaxCh+1) { // just for backward compatibility
	180	qthre=((TF1*)pQthre->At(pClu->Ch()))->Eval(pEsd->GetTimeStamp()); //
	181	} else { // in the past just 1 qthre
	182	hvsec = pParam->InHVSector(pClu->Y()); // per chamber
	183	if(hvsec>=0)
84770d7b	184	qthre=((TF1)pQthre->At(6ipCh+hvsec))->Eval(pEsd->GetTimeStamp()); //
496c71b0	185	} //
	186	//
	187	if(pClu->Q()<qthre) continue; //charge compartible with MIP clusters
	188	isOkQcut = kTRUE;
43e51ec6	189	//
496c71b0	190	cluLORS[0]=pClu->X(); cluLORS[1]=pClu->Y(); //get the LORS coordinates of the cluster
43e51ec6	191	Double_t dist = TMath::Sqrt((xPc-cluLORS[0])(xPc-cluLORS[0])+(yPc-cluLORS[1])(yPc-cluLORS[1]));
	192
	193	if(dist<dmin) {
	194	dmin = dist;
	195	index=iClu;
	196	bestHmpCluster=pClu;
	197	}
	198	}
b8541917	199
496c71b0	200	if(!isOkQcut) {
496c71b0	201	pTrk->SetHMPIDsignal(pParam->kMipQdcCut);
	202	continue;
	203	}
c38d443f	204
	205	Double_t radius = (pParam->Lors2Mars(ipCh,pParam->SizeAllX()/2,pParam->SizeAllY()/2)).Mag();
	206
87a6d94b	207	if(!AliTracker::PropagateTrackToBxByBz(hmpTrk,radius,pTrk->GetMass(),1,kFALSE)) continue;
43e51ec6	208
c38d443f	209	if(!hmpTrk->PropagateTo(bestHmpCluster)) continue;
c38d443f	210
43e51ec6	211	Int_t cluSiz = bestHmpCluster->Size();
	212	pTrk->SetHMPIDmip(bestHmpCluster->X(),bestHmpCluster->Y(),(Int_t)bestHmpCluster->Q(),0); //store mip info in any case
	213	pTrk->SetHMPIDcluIdx(ipCh,index+1000*cluSiz); //set chamber, index of cluster + cluster size
b8541917	214
	215	if(AliHMPIDReconstructor::GetRecoParam()) //retrieve distance cut
	216	{
	217	AliHMPIDReconstructor::GetRecoParam()->PrintParameters();
	218	if(AliHMPIDReconstructor::GetRecoParam()->IsFixedDistCut()==kTRUE) //distance cut is fixed number
	219	{
	220	distCut=AliHMPIDReconstructor::GetRecoParam()->GetHmpTrackMatchingDist();
	221	}
	222	else
	223	{
13fb7604	224	for(Int_t ipar=0;ipar<5;ipar++) distParams[ipar]=AliHMPIDReconstructor::GetRecoParam()->GetHmpTrackMatchingDistParam(ipar); //prevision: distance cut is function of momentum
b8541917	225	distCut=distParams[0]+distParams[1]TMath::Power(distParams[2]pTrk->GetP(),distParams[3]); //prevision: change functional form to be more precise
	226	}
	227	}
	228	else {distCut=pParam->DistCut();}
	229
	230	if(dmin < distCut) {
496c71b0	231	isOkDcut = kTRUE;
	232	}
	233
b8541917	234
b8541917	235
496c71b0	236	if(!isOkDcut) {
496c71b0	237	pTrk->SetHMPIDsignal(pParam->kMipDistCut); //closest cluster with enough charge is still too far from intersection
	238	}
	239
	240	if(isOkQcut*isOkDcut) isMatched = kTRUE; // MIP-Track matched !!
	241
	242	if(!isMatched) continue; // If matched continue...
43e51ec6	243
	244	Bool_t isOk = hmpTrk->Update(bestHmpCluster,0.1,0);
	245	if(!isOk) continue;
c38d443f	246	pTrk->SetOuterHmpParam(hmpTrk,AliESDtrack::kHMPIDout);
	247
	248	FillResiduals(hmpTrk,bestHmpCluster,kFALSE);
b8541917	249
496c71b0	250
496c71b0	251	//evaluate nMean
496c71b0	252	if(pNmean->GetEntries()==21) { //for backward compatibility
84770d7b	253	nmean=((TF1)pNmean->At(3ipCh))->Eval(pEsd->GetTimeStamp()); //C6F14 Nmean for this chamber
496c71b0	254	} else {
496c71b0	255	Int_t iRad = pParam->Radiator(yRa); //evaluate the radiator involved
0a7c7084	256	if(iRad < 0) {
	257	nmean = -1;
	258	} else {
84770d7b	259	Double_t tLow = ((TF1)pNmean->At(6ipCh+2*iRad ))->Eval(pEsd->GetTimeStamp()); //C6F14 low temp for this chamber
84770d7b	260	Double_t tHigh = ((TF1)pNmean->At(6ipCh+2*iRad+1))->Eval(pEsd->GetTimeStamp()); //C6F14 high temp for this chamber
496c71b0	261	Double_t tExp = pParam->FindTemp(tLow,tHigh,yRa); //estimated temp for that chamber at that y
496c71b0	262	nmean = pParam->NIdxRad(AliHMPIDParam::Instance()->GetEPhotMean(),tExp); //mean ref idx @ a given temp
0a7c7084	263	}
496c71b0	264	if(nmean < 0){ //track didn' t pass through the radiator
	265	pTrk->SetHMPIDsignal(AliHMPIDRecon::kNoRad); //set the appropriate flag
	266	pTrk->SetHMPIDcluIdx(ipCh,index+1000*cluSiz); //set index of cluster
	267	continue;
	268	}
	269	}
	270	//
a591e55f	271	recon.SetImpPC(xPc,yPc); //store track impact to PC
97a4d538	272	recon.CkovAngle(pTrk,(TClonesArray *)pClus->At(ipCh),index,nmean,xRa,yRa); //search for Cerenkov angle of this track
235a21c2	273
	274	if(pTrk->GetHMPIDsignal()<0) continue;
	275
e56b695f	276	AliHMPIDPid pID;
	277	Double_t prob[5];
	278	pID.FindPid(pTrk,5,prob);
	279	pTrk->SetHMPIDpid(prob);
	280	// Printf(" Prob e- %6.2f mu %6.2f pi %6.2f k %6.2f p %6.2f",prob[0]100,prob[1]100,prob[2]100,prob[3]100,prob[4]*100);
	281
b4866751	282	delete hmpTrk;hmpTrk=0x0;
496c71b0	283	}//iTrk
496c71b0	284
d3da6dc4	285	return 0; // error code: 0=no error;
611e810d	286	}//Recon()
611e810d	287	//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
9785d5fb	288	Int_t AliHMPIDTracker::ReconHiddenTrk(AliESDEvent pEsd,TObjArray pClus,TObjArray pNmean, TObjArray pQthre)
611e810d	289	{
611e810d	290	// Static method to reconstruct Theta Ckov for all valid tracks of a given event.
afe12692	291	// Arguments: pEsd- pointer ESD; pClu- pointer to clusters for all chambers; pNmean - pointer to all function Nmean=f(time), pQthre - pointer to all function Qthre=f(time)
611e810d	292	// Returns: error code, 0 if no errors
9785d5fb	293
	294	AliHMPIDReconHTA reconHTA; //instance of reconstruction class, nothing important in ctor
	295
	296	AliHMPIDParam *pParam = AliHMPIDParam::Instance(); //Instance of AliHMPIDParam
	297
	298	for(Int_t iTrk=0;iTrk<pEsd->GetNumberOfTracks();iTrk++){ //loop on the ESD tracks in the event
	299
	300	AliESDtrack *pTrk = pEsd->GetTrack(iTrk); //here it is simulated or just empty track
	301	Int_t ipCh;
	302	ipCh = pTrk->GetHMPIDcluIdx();ipCh/=1000000;
	303	if(ipCh<0) continue;
	304
	305	TClonesArray pMipCluLst=(TClonesArray )pClus->At(ipCh); //get the list of clusters
	306	Int_t nMipClusTot = pMipCluLst->GetEntries(); //total number of clusters in the given chamber
	307
	308	Double_t qMip=-1;
	309	Int_t chMip=-1;
ee2f3539	310	Double_t xMip = 0;
	311	Double_t yMip = 0;
	312	Int_t indMip = 0;
	313	Int_t cluMipSiz = 0;
9785d5fb	314
	315	for (Int_t iClu=0; iClu<nMipClusTot;iClu++) { //clusters loop
	316
	317	AliHMPIDCluster pClu=(AliHMPIDCluster)pMipCluLst->UncheckedAt(iClu); //get the cluster
	318	Double_t qClus = pClu->Q();
	319	if(qClus>qMip) {
	320	qMip = qClus;
	321	chMip = pClu->Ch();
	322	xMip = pClu->X();
	323	yMip = pClu->Y();
	324	indMip = iClu;
	325	cluMipSiz = pClu->Size();
	326	}
	327	}//clus loop
	328
	329	if(chMip<0) return 1;
	330
	331	Int_t hvsec;
ee2f3539	332	Double_t qthre=0;
9785d5fb	333	// evaluate qThre
	334	if(pQthre->GetEntriesFast()==pParam->kMaxCh+1) { // just for backward compatibility
	335	qthre=((TF1*)pQthre->At(chMip))->Eval(pEsd->GetTimeStamp()); //
	336	} else { // in the past just 1 qthre
	337	hvsec = pParam->InHVSector(yMip); // per chamber
	338	if(hvsec>=0) qthre=((TF1)pQthre->At(6chMip+hvsec))->Eval(pEsd->GetTimeStamp()); //
	339	}
	340	//
	341	if(qMip<qthre) {
	342	pTrk->SetHMPIDmip(xMip,yMip,(Int_t)qMip,0); //store mip info in any case
	343	pTrk->SetHMPIDcluIdx(chMip,indMip+1000*cluMipSiz);
	344	pTrk->SetHMPIDsignal(pParam->kMipQdcCut);
	345	return 1; //charge compatible with MIP clusters
	346	}
	347
	348	pTrk->SetHMPIDmip(xMip,yMip,(Int_t)qMip,0); //store mip info in any case
	349	pTrk->SetHMPIDcluIdx(chMip,indMip+1000*cluMipSiz);
	350
	351	Double_t yRa = yMip; //just an approx...
	352	Double_t nmean;
	353	//evaluate nMean
	354	if(pNmean->GetEntries()==21) { //for backward compatibility
	355	nmean=((TF1)pNmean->At(3chMip))->Eval(pEsd->GetTimeStamp()); //C6F14 Nmean for this chamber
	356	} else {
	357	Int_t iRad = pParam->Radiator(yRa); //evaluate the radiator involved
	358	if(iRad < 0) {
	359	nmean = -1;
	360	} else {
	361	Double_t tLow = ((TF1)pNmean->At(6chMip+2*iRad ))->Eval(pEsd->GetTimeStamp()); //C6F14 low temp for this chamber
	362	Double_t tHigh = ((TF1)pNmean->At(6chMip+2*iRad+1))->Eval(pEsd->GetTimeStamp()); //C6F14 high temp for this chamber
	363	Double_t tExp = pParam->FindTemp(tLow,tHigh,yRa); //estimated temp for that chamber at that y
	364	nmean = pParam->NIdxRad(AliHMPIDParam::Instance()->GetEPhotMean(),tExp); //mean ref idx @ a given temp
	365	}
	366	if(nmean < 0){ //track didn' t pass through the radiator
	367	pTrk->SetHMPIDsignal(AliHMPIDRecon::kNoRad); //set the appropriate flag
	368	return 1;
	369	}
	370	}
	371	//
ee2f3539	372	if(!reconHTA.CkovHiddenTrk(pTrk,(TClonesArray *)pClus->At(ipCh),indMip,nmean)) { //search for track parameters and Cerenkov angle of this track
	373	AliHMPIDPid pID;
	374	Double_t prob[5];
	375	pID.FindPid(pTrk,5,prob);
	376	pTrk->SetHMPIDpid(prob);
	377	}
e56b695f	378	// Printf(" Prob e- %6.2f mu %6.2f pi %6.2f k %6.2f p %6.2f",prob[0]100,prob[1]100,prob[2]100,prob[3]100,prob[4]*100);
9785d5fb	379	}//iTrk
	380
	381	return 0; // error code: 0=no error;
	382
611e810d	383	}//Recon()
d3da6dc4	384	//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
c1af14f7	385	void AliHMPIDTracker::FillClusterArray(TObjArray* array) const {
	386
	387	// Publishes all pointers to clusters known to the tracker into the
	388	// passed object array.
	389	// The ownership is not transfered - the caller is not expected to delete
	390	// the clusters
	391
	392	for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++){
	393	TClonesArray pCluArr=(TClonesArray)(*fClu)[iCh];
	394	for (Int_t iClu=0; iClu<pCluArr->GetEntriesFast();iClu++){
	395	AliHMPIDCluster pClu=(AliHMPIDCluster)pCluArr->UncheckedAt(iClu);
	396	array->AddLast(pClu);
	397	}//cluster loop in iCh
	398	pCluArr->Delete();
	399	}//Ch loop
	400
	401	return;
	402	}
	403	//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++