X-Git-Url: http://git.uio.no/git/?p=u%2Fmrichter%2FAliRoot.git;a=blobdiff_plain;f=HMPID%2FAliHMPIDTracker.cxx;h=9bfe6e3671c040528e55c51277d898c7d7311e80;hp=080fc7701279fc34b0c69622473558b780c12085;hb=496c71b05fe06243800190fe8dd28c61040bfb3b;hpb=60144e5fb706cbd666d4f94d20a4f77ac1fb5756 diff --git a/HMPID/AliHMPIDTracker.cxx b/HMPID/AliHMPIDTracker.cxx index 080fc770127..9bfe6e3671c 100644 --- a/HMPID/AliHMPIDTracker.cxx +++ b/HMPID/AliHMPIDTracker.cxx @@ -1,4 +1,5 @@ #include "AliHMPIDTracker.h" //class header +#include "AliHMPIDtrack.h" //class header #include "AliHMPIDCluster.h" //GetTrackPoint(),PropagateBack() #include "AliHMPIDParam.h" //GetTrackPoint(),PropagateBack() #include "AliHMPIDRecon.h" //Recon() @@ -65,6 +66,27 @@ Int_t AliHMPIDTracker::IntTrkCha(AliESDtrack *pTrk,Float_t &xPc,Float_t &yPc,Flo 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(pTrk,p1,n1)==kFALSE) return -1; //try to intersect track with the middle of radiator + if(pTrk->Intersect(pTrk,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. @@ -82,8 +104,8 @@ Int_t AliHMPIDTracker::PropagateBack(AliESDEvent *pEsd) // 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"); + if(!pNmeanEnt) AliFatal("No Nmean C6F14 "); + if(!pQthreEnt) AliFatal("No Qthre"); return Recon(pEsd,fClu,(TObjArray*)pNmeanEnt->GetObject(),(TObjArray*)pQthreEnt->GetObject()); }//PropagateBack() @@ -93,45 +115,143 @@ Int_t AliHMPIDTracker::Recon(AliESDEvent *pEsd,TObjArray *pClus,TObjArray *pNmea // 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 + + AliHMPIDRecon recon; //instance of reconstruction class, nothing important in ctor Float_t xPc,yPc,xRa,yRa,theta,phi; - for(Int_t iTrk=0;iTrkGetNumberOfTracks();iTrk++){ //ESD tracks loop - AliESDtrack *pTrk = pEsd->GetTrack(iTrk); //get reconstructed track - Int_t cham=IntTrkCha(pTrk,xPc,yPc,xRa,yRa,theta,phi); //get chamber intersected by this track - if(cham<0) { //no intersection at all, go after next track + Double_t cluLORS[2]={0},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,dmin=999999,bz=0; + Bool_t isMatched=kFALSE; + Int_t bestCluCh=-1; + Int_t cluSiz=0; + Double_t qthre = 0; Double_t nmean=0; Int_t cham=0; Int_t hvsec=0; + Int_t index=0; //index of the "best" matching cluster + Double_t bestChi2=-1; //Chi2 of the "best" matching cluster + Double_t chi2=0; + Int_t nClusCh[AliHMPIDParam::kMaxCh+1]; + Bool_t isOkQcut=kFALSE; + Bool_t isOkDcut=kFALSE; + + AliHMPIDParam *pParam = AliHMPIDParam::Instance(); //Instance of AliHMPIDParam + + for(Int_t iTrk=0;iTrkGetNumberOfTracks();iTrk++){ //loop on the ESD tracks in the event + isMatched=kFALSE;bestCluCh=-1;dmin=999999;bestChi2=99999;chi2=99999;cluSiz=0; //init. track matching params + isOkQcut = kFALSE; + AliHMPIDCluster *bestHmpCluster=0x0; //the best matching cluster + AliESDtrack *pTrk = pEsd->GetTrack(iTrk); //get reconstructed track + AliHMPIDtrack *hmpTrk = new AliHMPIDtrack(*pTrk); //create a hmpid track to be used for propagation and matching + bz=AliTracker::GetBz(); + + Int_t ipCh=IntTrkCha(pTrk,xPc,yPc,xRa,yRa,theta,phi); + if(ipCh<0) { //no intersection at all, go after next track pTrk->SetHMPIDtrk(0,0,0,0); //no intersection found pTrk->SetHMPIDcluIdx (99,99999); //chamber not found, mip not yet considered pTrk->SetHMPIDsignal(AliHMPIDRecon::kNotPerformed); //ring reconstruction not yet performed continue; } + +// 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; + + for (Int_t iClu=0; iCluUncheckedAt(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*cham+hvsec))->Eval(pEsd->GetTimeStamp()); // + } // +// + if(pClu->Q()X(); cluLORS[1]=pClu->Y(); //get the LORS coordinates of the cluster + pParam->Lors2Mars(ipCh,cluLORS[0],cluLORS[1],cluMARS); //convert cluster coors. from LORS to MARS + radClu=TMath::Sqrt(cluMARS[0]*cluMARS[0]+cluMARS[1]*cluMARS[1]); //radial distance of candidate cluster in MARS + Double_t trkx0[3]; + hmpTrk->GetXYZ(trkx0); //get track position in MARS + radInitTrk=TMath::Sqrt(trkx0[0]*trkx0[0]+trkx0[1]*trkx0[1]); + hmpTrk->PropagateToR(radClu,10); + hmpTrk->GetXYZ(trkx0); //get track position in MARS + hmpTrk->GetXYZAt(radClu,bz,trkMARS); //get the track coordinates at the rad distance after prop. + d3d=TMath::Sqrt((cluMARS[0]-trkMARS[0])*(cluMARS[0]-trkMARS[0])+(cluMARS[1]-trkMARS[1])*(cluMARS[1]-trkMARS[1])+(cluMARS[2]-trkMARS[2])*(cluMARS[2]-trkMARS[2])); + chi2=hmpTrk->GetPredictedChi2(pClu); + if(dmin > d3d ) { //to be saved for the moment... + cluSiz = pClu->Size(); + dmin=d3d; + bestCluCh=ipCh; + bestHmpCluster=pClu; + index=iClu; + bestChi2=chi2; + cluLORS[0]=pClu->X(); cluLORS[1]=pClu->Y(); +// pParam->Lors2Mars(ipCh,cluLORS[0],cluLORS[1],bestcluMARS); + }//global dmin cut + }//clus loop + + if(!isOkQcut) { + pTrk->SetHMPIDcluIdx(ipCh,9999); + pTrk->SetHMPIDsignal(pParam->kMipQdcCut); + continue; + } + + if(dmin < pParam->DistCut()) { + isOkDcut = kTRUE; + } + + if(!isOkDcut) { + pTrk->SetHMPIDcluIdx(ipCh,index+1000*cluSiz); //set chamber, index of cluster + cluster size + 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... + + Int_t indexAll = 0; + for(Int_t iC=0;iCUpdate(bestHmpCluster,bestChi2,indexAll); + if(!isOk) continue; + pTrk->SetOuterParam((AliExternalTrackParam*)&hmpTrk,AliESDtrack::kHMPIDout); + +// cham=IntTrkCha(bestCluCh,hmpTrk,xPc,yPc,xRa,yRa,theta,phi); + cham=IntTrkCha(pTrk,xPc,yPc,xRa,yRa,theta,phi); + if(cham<0) { //no intersection at all, go after next track + pTrk->SetHMPIDtrk(0,0,0,0); //no intersection found + pTrk->SetHMPIDcluIdx (99,99999); //chamber not found, mip not yet considered + pTrk->SetHMPIDsignal(AliHMPIDRecon::kNotPerformed); //ring reconstruction not yet performed + continue; + } + pTrk->SetHMPIDtrk(xRa,yRa,theta,phi); //store initial infos - Double_t nmean; - if(pNmean->GetEntries()==21) { //for backward compatibility - nmean=((TF1*)pNmean->At(3*cham))->Eval(pEsd->GetTimeStamp()); //C6F14 Nmean for this chamber - } else { - Int_t iRad = AliHMPIDParam::Radiator(yRa); //evaluate the radiator involved - if(iRad < 0) { - nmean = -1; - } else { - //AliDebug(1,"\n track didn' t pass through the radiator \n"); //check track passage through the radiators - Double_t tLow = ((TF1*)pNmean->At(6*cham+2*iRad ))->Eval(pEsd->GetTimeStamp()); //C6F14 low temp for this chamber - Double_t tHigh = ((TF1*)pNmean->At(6*cham+2*iRad+1))->Eval(pEsd->GetTimeStamp()); //C6F14 high temp for this chamber - Double_t tExp = AliHMPIDParam::FindTemp(tLow,tHigh,yRa); //estimated temp for that chamber at that y - nmean = AliHMPIDParam::NIdxRad(AliHMPIDParam::Instance()->GetEPhotMean(),tExp); //mean ref idx @ a given temp - } - } - Double_t qthre = 0; - if(pQthre->GetEntriesFast()==AliHMPIDParam::kMaxCh+1) // just for backward compatibility - qthre=((TF1*)pQthre->At(cham))->Eval(pEsd->GetTimeStamp()); // - else { // in the past just 1 qthre - Int_t hvsec = AliHMPIDParam::InHVSector(yPc); // per chamber - if (hvsec>=0) - qthre=((TF1*)pQthre->At(6*cham+hvsec))->Eval(pEsd->GetTimeStamp()); // - } // + //evaluate nMean + if(pNmean->GetEntries()==21) { //for backward compatibility + nmean=((TF1*)pNmean->At(3*cham))->Eval(pEsd->GetTimeStamp()); //C6F14 Nmean for this chamber + } else { + Int_t iRad = pParam->Radiator(yRa); //evaluate the radiator involved + Double_t tLow = ((TF1*)pNmean->At(6*cham+2*iRad ))->Eval(pEsd->GetTimeStamp()); //C6F14 low temp for this chamber + Double_t tHigh = ((TF1*)pNmean->At(6*cham+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(cham),nmean,qthre); //search for Cerenkov angle of this track -// Printf("AliHMPIDTracker::Recon: nmean %f, qthre %f",nmean,qthre); - } //ESD tracks loop + recon.CkovAngle(pTrk,(TClonesArray *)pClus->At(cham),index,nmean); //search for Cerenkov angle of this track + }//iTrk + return 0; // error code: 0=no error; }//Recon() //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++