AliHMPIDRecon::AliHMPIDRecon():
TTask("RichRec","RichPat"),
fPhotCnt(-1),
- fPhotFlag(0),
- fPhotCkov(0),
- fPhotPhi(0),
- fPhotWei(0),
+ fPhotFlag(0x0),
+ fPhotCkov(0x0),
+ fPhotPhi(0x0),
+ fPhotWei(0x0),
fCkovSigma2(0),
fIsWEIGHT(kFALSE),
fDTheta(0.001),
fRingAcc(0),
fTrkDir(0,0,1), // Just for test
fTrkPos(30,40), // Just for test
- fMipPos(0),
- fPc(0),
+ fMipPos(0,0),
+ fPc(0,0),
fParam(AliHMPIDParam::Instance())
{
//..
//..
//Init some variables
//..
- if(n<0) return;
+ if(n<=0) return;
fPhotFlag = new Int_t[n];
fPhotCkov = new Double_t[n];
fPhotPhi = new Double_t[n];
//..
//Delete variables
//..
- delete fPhotFlag;
- delete fPhotCkov;
- delete fPhotPhi;
- delete fPhotWei;
+ delete [] fPhotFlag;
+ delete [] fPhotCkov;
+ delete [] fPhotPhi;
+ delete [] fPhotWei;
}
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-void AliHMPIDRecon::CkovAngle(AliESDtrack *pTrk,TClonesArray *pCluLst,Double_t nmean,Double_t qthre)
+void AliHMPIDRecon::CkovAngle(AliESDtrack *pTrk,TClonesArray *pCluLst,Int_t index,Double_t nmean,Float_t xRa,Float_t yRa)
{
// Pattern recognition method based on Hough transform
// Arguments: pTrk - track for which Ckov angle is to be found
// pCluLst - list of clusters for this chamber
// Returns: - track ckov angle, [rad],
+
+ const Int_t nMinPhotAcc = 3; // Minimum number of photons required to perform the pattern recognition
+
Int_t nClusTot = pCluLst->GetEntries();
if(nClusTot>fParam->MultCut()) fIsWEIGHT = kTRUE; // offset to take into account bkg in reconstruction
else fIsWEIGHT = kFALSE;
InitVars(nClusTot);
- Float_t xRa,yRa,th,ph;
- pTrk->GetHMPIDtrk(xRa,yRa,th,ph); //initialize this track: th and ph angles at middle of RAD
+ Float_t xPc,yPc,th,ph;
+ pTrk->GetHMPIDtrk(xPc,yPc,th,ph); //initialize this track: th and ph angles at middle of RAD
SetTrack(xRa,yRa,th,ph);
fParam->SetRefIdx(nmean);
- Float_t dMin=999,mipX=-1,mipY=-1;Int_t chId=-1,mipId=-1,mipQ=-1;
- fPhotCnt=0;
+ Float_t mipX=-1,mipY=-1;
+ Int_t chId=-1,mipQ=-1,sizeClu = -1;
+
+ fPhotCnt=0;
+
for (Int_t iClu=0; iClu<pCluLst->GetEntriesFast();iClu++){//clusters loop
AliHMPIDCluster *pClu=(AliHMPIDCluster*)pCluLst->UncheckedAt(iClu); //get pointer to current cluster
+ if(iClu == index) { // this is the MIP! not a photon candidate: just store mip info
+ mipX = pClu->X();
+ mipY = pClu->Y();
+ mipQ=(Int_t)pClu->Q();
+ sizeClu=pClu->Size();
+ continue;
+ }
chId=pClu->Ch();
- if(pClu->Q()>qthre){ //charge compartible with MIP clusters
- Float_t dX=fPc.X()-pClu->X(),dY=fPc.Y()-pClu->Y(),d =TMath::Sqrt(dX*dX+dY*dY); //distance between current cluster and intersection point
- if( d < dMin) {mipId=iClu; dMin=d;mipX=pClu->X();mipY=pClu->Y();mipQ=(Int_t)pClu->Q();} //current cluster is closer, overwrite data for min cluster
- }else{ //charge compatible with photon cluster
- Double_t thetaCer,phiCer;
- if(FindPhotCkov(pClu->X(),pClu->Y(),thetaCer,phiCer)){ //find ckov angle for this photon candidate
- fPhotCkov[fPhotCnt]=thetaCer; //actual theta Cerenkov (in TRS)
- fPhotPhi [fPhotCnt]=phiCer; //actual phi Cerenkov (in TRS): -pi to come back to "unusual" ref system (X,Y,-Z)
- //PH Printf("photon n. %i reconstructed theta = %f",fPhotCnt,fPhotCkov[fPhotCnt]);
- fPhotCnt++; //increment counter of photon candidates
- }
+ Double_t thetaCer,phiCer;
+ if(FindPhotCkov(pClu->X(),pClu->Y(),thetaCer,phiCer)){ //find ckov angle for this photon candidate
+ fPhotCkov[fPhotCnt]=thetaCer; //actual theta Cerenkov (in TRS)
+ fPhotPhi [fPhotCnt]=phiCer; //actual phi Cerenkov (in TRS): -pi to come back to "unusual" ref system (X,Y,-Z)
+ fPhotCnt++; //increment counter of photon candidates
}
}//clusters loop
+
+ pTrk->SetHMPIDmip(mipX,mipY,mipQ,fPhotCnt); //store mip info in any case
+ pTrk->SetHMPIDcluIdx(chId,index+1000*sizeClu); //set index of cluster
+
+ if(fPhotCnt<=nMinPhotAcc) { //no reconstruction with <=3 photon candidates
+ pTrk->SetHMPIDsignal(kNoPhotAccept); //set the appropriate flag
+ return;
+ }
+
+
fMipPos.Set(mipX,mipY);
- if(fPhotCnt<=3) pTrk->SetHMPIDsignal(kNoPhotAccept); //no reconstruction with <=3 photon candidates
+
+
+//PATTERN RECOGNITION STARTED:
+
Int_t iNrec=FlagPhot(HoughResponse()); //flag photons according to individual theta ckov with respect to most probable
pTrk->SetHMPIDmip(mipX,mipY,mipQ,iNrec); //store mip info
- if(mipId==-1) {pTrk->SetHMPIDsignal(kMipQdcCut); return;} //no clusters with QDC more the threshold at all
- if(dMin>fParam->DistCut()) {pTrk->SetHMPIDsignal(kMipDistCut); return;} //closest cluster with enough charge is still too far from intersection
- pTrk->SetHMPIDcluIdx(chId,mipId); //set index of cluster
if(iNrec<1){
pTrk->SetHMPIDsignal(kNoPhotAccept); //no photon candidates are accepted
+ return;
}
- else {
- Double_t thetaC = FindRingCkov(pCluLst->GetEntries()); //find the best reconstructed theta Cherenkov
+ Double_t thetaC = FindRingCkov(pCluLst->GetEntries()); //find the best reconstructed theta Cherenkov
// FindRingGeom(thetaC,2);
- pTrk->SetHMPIDsignal(thetaC); //store theta Cherenkov
- pTrk->SetHMPIDchi2(fCkovSigma2); //store errors squared
- }
+ pTrk->SetHMPIDsignal(thetaC); //store theta Cherenkov
+ pTrk->SetHMPIDchi2(fCkovSigma2); //store errors squared
DeleteVars();
}//CkovAngle()
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff