#include "AliRICHTracker.h" //class header #include "AliRICH.h" #include "AliRICHRecon.h" #include "AliRICHParam.h" #include #include //EsdQA() #include #include //EsdQA() #include //EsdQA() #include //EsdQA() #include "AliRICHHelix.h" #include #include #include #include #include #include //RecWithStack(); #include //GetTrackPoint() #include //GetTrackPoint() #include //EsdQA() #include //EsdQA() #include //EsdQA() ClassImp(AliRICHTracker) //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ AliRICHTracker::AliRICHTracker():AliTracker() { // AliRICHTracker is created from AliReconstraction::Run() which invokes AliReconstraction::CreateTrackers() // which in turn invokes AliRICHReconstructor::CreateTracker(). // Note that this is done just once per session before AliReconstruction::Run() goes to events loop. AliRICHParam::Instance()->CdbRead(0,0); for(Int_t i=0;i<5;i++)fErrPar[i]=0; } //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Bool_t AliRICHTracker::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 RICH 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; point.SetVolumeID(AliAlignObj::LayerToVolUID(AliAlignObj::kRICH,iCham-1));//layer and chamber number AliRICH *pRich=((AliRICH*)gAlice->GetDetector("RICH")); AliRICHCluster *pClu=(AliRICHCluster*)pRich->Clus(iCham)->UncheckedAt(iClu);//get pointer to cluster TVector3 mars=AliRICHParam::Instance()->Lors2Mars(iCham,pClu->X(),pClu->Y()); point.SetXYZ(mars.X(),mars.Y(),mars.Z()); return kTRUE; } //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Int_t AliRICHTracker::LoadClusters(TTree *pCluTree) { // Interface callback methode invoked from AliReconstruction::RunTracking() to load RICH clusters for RICH // Arguments: pCluTree- pointer to clusters tree got by AliRICHLoader::LoadRecPoints("read") then AliRICHLoader::TreeR() // Returns: error code (currently ignored in AliReconstruction::RunTraking()) AliDebug(1,"Start."); pCluTree->GetEntry(0); AliDebug(1,"Stop."); return 0; } //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Int_t AliRICHTracker::PropagateBack(AliESD *pESD) { // Interface callback methode invoked by AliRecontruction::RunTracking() during tracking after TOF. It's done just once per event // Arguments: pESD - pointer to Event Summary Data class instance which contains a list of tracks // Returns: error code, 0 if no errors Int_t iNtracks=pESD->GetNumberOfTracks(); AliDebug(1,Form("Start with %i tracks",iNtracks)); AliRICH *pRich=((AliRICH*)gAlice->GetDetector("RICH")); AliRICHRecon recon; Int_t nphots =0; for(Int_t iTrk=0;iTrkGetTrack(iTrk);// get next reconstructed track Double_t mom[3], pos[3]; pTrk->GetPxPyPz(mom); TVector3 mom3(mom[0],mom[1],mom[2]); pTrk->GetXYZ(pos); TVector3 pos3(pos[0],pos[1],pos[2]); AliRICHHelix helix(pos3,mom3,(Int_t)pTrk->GetSign(),-0.1*GetBz()); //construct helix out of track running parameters //Printf(" magnetic field %f charged %f\n",GetBz(),pTrack->GetSign()); helix.Print("Track"); Int_t iChamber=helix.RichIntersect(AliRICHParam::Instance()); if(!iChamber) continue; //no intersection with chambers, ignore this track go after the next one //find MIP cluster candidate (closest to track intersection point cluster with large enough QDC) Double_t dR=9999, dX=9999, dY=9999; //distance between track-PC intersection point and current cluster Double_t mipDr=9999,mipDx=9999,mipDy=9999,mipX=9999,mipY=9999; Int_t mipQ=0; //nearest cluster parameters Int_t iMipId=-1; //index of this nearest cluster for(Int_t iClu=0;iCluClus(iChamber)->GetEntries();iClu++){ //clusters loop for intersected chamber AliRICHCluster *pClu=(AliRICHCluster*)pRich->Clus(iChamber)->UncheckedAt(iClu); //get pointer to current cluster if(pClu->Q()DistXY(helix.PosPc(),dX,dY); dR=TMath::Sqrt(dX*dX+dY*dY); //get distance for current cluster if(dRX(); mipY=pClu->Y(); mipQ=pClu->Q();} //current cluster is closer, overwrite data for min cluster }//clusters loop for intersected chamber pTrk->SetRICHthetaPhi(helix.Ploc().Theta(),helix.Ploc().Phi()); //store track impact angles with respect to RICH planes pTrk->SetRICHdxdy(mipDx,mipDy); //distance between track-PC intersection and closest cluster with Qdc>100 pTrk->SetRICHmipXY(mipX,mipY); //position of that closest cluster with Qdc>100 pTrk->SetRICHnclusters(1000000*mipQ); //charge of that closest cluster with Qdc>100 if(iMipId==-1) {pTrk->SetRICHsignal(kMipQdcCut); continue;} //no cluster with enough QDC found if(mipDr>AliRICHParam::DmatchMIP()) {pTrk->SetRICHsignal(kMipDistCut); continue;} //closest cluster with enough carge is still too far pTrk->SetRICHcluster(iMipId+1000000*iChamber); //set mip cluster index pTrk->SetRICHsignal(recon.ThetaCerenkov(&helix,pRich->Clus(iChamber),nphots));//search for mean Cerenkov angle for this track pTrk->SetRICHnclusters(1000000*mipQ+nphots); //on return nphots is number of photon clusters accepted in reconstruction pTrk->SetRICHchi2(recon.GetRingSigma2()); AliDebug(1,Form("Ch=%i PC Intersection=(%5.2f,%5.2f) cm MIP cluster dist=(%5.2f,%5.2f)=%5.2f cm ThetaCkov=%f", iChamber,helix.PosPc().X(),helix.PosPc().Y(), mipDx,mipDy,mipDr, pTrk->GetRICHsignal())); //here comes PID calculations // CalcProb(pTrack->GetRICHsignal(),pTrack->GetP(),sigmaPID,richPID); }//ESD tracks loop AliDebug(1,"Stop pattern recognition"); return 0; // error code: 0=no error; }//PropagateBack() //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ void AliRICHTracker::RecWithStack(TNtupleD *hn) { // Reconstruction for particles from STACK. This methode is to be used for RICH standalone when no other detectors are switched on, so normal tracking is not available. // Arguments: hn- output ntuple where to store all variables // Returns: none AliDebug(1,"Start."); AliRICH *pRich=((AliRICH*)gAlice->GetDetector("RICH")); // pRich->GetLoader()->GetRunLoader()->LoadHeader(); if(!pRich->GetLoader()->GetRunLoader()->TreeK()) pRich->GetLoader()->GetRunLoader()->LoadKinematics(); AliStack *pStack = pRich->GetLoader()->GetRunLoader()->Stack(); if(!pStack) {AliDebug(1,Form("No STACK found in AliRoot"));return;} Int_t iNtracks=pStack->GetNtrack(); AliDebug(1,Form(" Start reconstruction with %i track(s) from Stack",iNtracks)); Double_t hnvec[20]; Double_t b=GetFieldMap()->SolenoidField()/10;// magnetic field in Tesla AliDebug(1,Form("Start with simulated %i tracks in %f Tesla field",iNtracks,b)); TVector3 x0(0,0,0); TVector3 p0(0,0,0);//tmp storage for AliRICHHelix if(pRich->GetLoader()->LoadRecPoints()) {AliDebug(1,Form("No clusters found in RICH"));return;} pRich->GetLoader()->TreeR()->GetEntry(0); AliRICHRecon recon; for(Int_t iTrackN=0;iTrackNParticle(iTrackN); if(!pParticle) {AliDebug(1,Form("Not a valid TParticle pointer. Track skipped"));continue;} AliDebug(1,Form(" PDG code : %i",pParticle->GetPdgCode())); // // problem of PDG code of some extra particles to be solved!!!!!!!!! // // found problem! Look in TRD directory : codes from Fluka are : // // if ((pdg_code == 10010020) || // (pdg_code == 10010030) || // (pdg_code == 50000050) || // (pdg_code == 50000051) || // (pdg_code == 10020040)) { // if(pParticle->GetPdgCode()>=50000050||pParticle->GetPdgCode()==0||pParticle->GetPdgCode()>10000) {AliDebug(1,Form("A photon as track... Track skipped"));continue;} if(!pParticle->GetPDG()) continue; // // to be updated for us!! // AliDebug(1,Form("Track %i is a %s with charge %i and momentum %f", iTrackN,pParticle->GetPDG()->GetName(),Int_t(pParticle->GetPDG()->Charge()),pParticle->P())); // if(pParticle->GetMother(0)!=-1) continue; //consider only primaries if(pParticle->GetPDG()->Charge()==0||TMath::Abs(Int_t(pParticle->GetPDG()->Charge()))!=3) continue; //to avoid photons from stack... hnvec[0]=pParticle->P(); hnvec[1]=pParticle->GetPDG()->Charge(); p0.SetMagThetaPhi(pParticle->P(),pParticle->Theta(),pParticle->Phi()); x0.SetXYZ(pParticle->Vx(),pParticle->Vy(),pParticle->Vz()); AliRICHHelix helix(x0,p0,TMath::Sign(1,(Int_t)pParticle->GetPDG()->Charge()),b); Int_t iChamber=helix.RichIntersect(AliRICHParam::Instance()); if(!iChamber) continue;// no intersection with RICH found hnvec[2]=helix.Ploc().Theta(); hnvec[3]=helix.Ploc().Phi(); hnvec[4]=helix.PosPc().X(); hnvec[5]=helix.PosPc().Y(); Double_t dX,dY,dR,dRmip=9999; //min distance between clusters and track position on PC Int_t iMipId=-1; //index of that min distance cluster for(Int_t iClu=0;iCluClus(iChamber)->GetEntries();iClu++){//clusters loop for intersected chamber AliRICHCluster *pClu=(AliRICHCluster*)pRich->Clus(iChamber)->UncheckedAt(iClu);//get pointer to current cluster pClu->DistXY(helix.PosPc(),dX,dY); dR=TMath::Sqrt(dX*dX+dY*dY);//ditance between current cluster and helix intersection with PC if(dRX();hnvec[7]=pClu->Y();hnvec[8]=pClu->Q(); iMipId=1000000*iChamber+iClu;}//find cluster nearest to the track }//clusters loop for intersected chamber hnvec[9]=recon.ThetaCerenkov(&helix,pRich->Clus(iChamber),iMipId); //search for mean Cerenkov angle for this track hnvec[10]=iMipId;//on return from ThetaCerenkov() contains number of photon candidates accepted hnvec[11]=(Double_t)iMipId; hnvec[12]=(Double_t)iChamber; hnvec[13]=(Double_t)pParticle->GetPdgCode(); if(hn) hn->Fill(hnvec); AliDebug(1,Form("FINAL Theta Cerenkov=%f",hnvec[9])); }//stack particles loop pRich->GetLoader()->UnloadRecPoints(); AliDebug(1,"Stop."); }//RecWithStack //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ void AliRICHTracker::EsdQA(Bool_t isPrint) { // Reads ESD file and print out or plot some information for QA // Arguments: isPrint is a flag to choose between printing (isPrint = kTRUE) and plotting (isPrint = kFALSE) // Returns: none TFile *pFile=TFile::Open("AliESDs.root","read"); if(!pFile) {Printf("ERROR: AliESDs.root does not exist!");return;} TTree *pTr=(TTree*)pFile->Get("esdTree"); if(!pTr) {Printf("ERROR: AliESDs.root, no ESD tree inside!");return;} AliESD *pEsd=new AliESD; pTr->SetBranchAddress("ESD", &pEsd); TH1D *pProbEl=0,*pProbMu=0,*pProbPi=0,*pProbKa=0,*pProbPr=0,*pMom=0,*pMipQ=0; TH2F *pThP=0,*pDxDy=0; TProfile *pChiTh=0; if(!isPrint){ TH1::AddDirectory(kFALSE); pProbEl=new TH1D("RiProbE" ,"Prob e" ,101 ,0 ,1.05); pProbEl->SetLineColor(kGreen); pProbPi=new TH1D("RiProbPi","Prob #pi" ,101 ,0 ,1.05); pProbPi->SetLineColor(kRed); pProbMu=new TH1D("RiProbMu","Prob #mu" ,101 ,0 ,1.05); pProbMu->SetLineColor(kBlue); pProbKa=new TH1D("RiProbK" ,"Prob K" ,101 ,0 ,1.05); pProbPr=new TH1D("RiProbP" ,"Prob p" ,101 ,0 ,1.05); pMom =new TH1D("pMom" ,"Track P, GeV" ,200 ,0 ,20 ); pMipQ =new TH1D("RiMipQ" ,"Mip Q, ADC" ,2000 ,0 ,4000); pThP =new TH2F("RiThP" ,"#theta_{Ckov} radian;P GeV" ,65 ,-0.5,6.0,75,0,0.75); pThP->SetStats(0); pDxDy =new TH2F("RiDxDy" ,"distance between mip and track;cm",300,-2.5,2.5, 300,-2.5,2.5); pChiTh =new TProfile("RiChiTh","#chi^{2};#theta_{C}" ,80 ,0,0.8 , -2,2); } Int_t iEvtCnt=0,iTrkCnt=0,iGoodCnt=0; Float_t bz=0; for(Int_t iEvt=0;iEvtGetEntries();iEvt++){//ESD events loop pTr->GetEvent(iEvt); iEvtCnt++; if(isPrint) Printf(""); bz=pEsd->GetMagneticField()/10.; for(Int_t iTrk=0;iTrkGetNumberOfTracks();iTrk++){//ESD tracks loop AliESDtrack *pTrk=pEsd->GetTrack(iTrk); iTrkCnt++; //get next reconstructed track and increment total tracks counter Float_t mom =pTrk->GetP(); //track momentum Double_t sign =pTrk->GetSign(); //track sign Float_t ckov =pTrk->GetRICHsignal(); //Theta ckov for this track, rad Float_t chi2 =pTrk->GetRICHchi2(); //Theta ckov error for this track, rad^2 Int_t qdc =pTrk->GetRICHnclusters()/1000000; //Mip candidate charge, qdc Int_t nphot =pTrk->GetRICHnclusters()%1000000; //number of photon candidates Float_t dx,dy; pTrk->GetRICHdxdy(dx,dy); //distance between mip position and track instersection Float_t theta,phi; pTrk->GetRICHthetaPhi(theta,phi); //track inclination angles in LORS Double_t pid[5]; pTrk->GetRICHpid(pid); //pid vector if(ckov>0) iGoodCnt++; if(isPrint){ TString comment; if(ckov>0) comment="OK"; else if(ckov==kMipQdcCut) comment="small QDC"; else if(ckov==kMipDistCut) comment="mip too far"; else if(ckov==-1) comment="no intersection"; Printf("Tr=%2i Q=%4.1f P=%.3f R=%4.2f Th=%6.3f MipQ= %4i Nph=%2i" " rad Prob : e=%.4f mu=%.4f pi=%.4f K=%.4f p=%.4f %s" , iTrk,sign,mom,TMath::Sqrt(dx*dx+dy*dy),ckov,qdc,nphot, pid[0],pid[1],pid[2],pid[3],pid[4], comment.Data()); }else{//collect hists pMom->Fill(mom); pMipQ->Fill(qdc); pDxDy->Fill(dx,dy); pThP->Fill(mom,ckov); pChiTh->Fill(ckov,chi2); pProbEl->Fill(pid[0]); pProbMu->Fill(pid[1]); pProbPi->Fill(pid[2]); pProbKa->Fill(pid[3]); pProbPr->Fill(pid[4]); }//if plot }//ESD tracks loop }//ESD events loop delete pEsd; pFile->Close();//close AliESDs.root TString summary=Form("Events: %i Tracks %i Good RICH: %i Mag Fld %.2f Tesla",iEvtCnt,iTrkCnt,iGoodCnt,bz); if(isPrint){ Printf(summary.Data()); }else{ TCanvas *pC=new TCanvas("c",summary.Data()); pC->Divide(2,2); TF1 *pPion = new TF1("RITheor","acos(sqrt(x*x+[0]*[0])/(x*[1]))",1.2,6); pPion->SetLineWidth(1); pPion->SetParameter(1,1.292); //ref idx AliPID ppp; pPion->SetLineColor(kRed); pPion->SetParameter(0,AliPID::ParticleMass(AliPID::kPion)); //mass TF1 *pKaon = (TF1*)pPion->Clone(); pKaon->SetLineColor(kGreen); pKaon->SetParameter(0,AliPID::ParticleMass(AliPID::kKaon)); TF1 *pProt = (TF1*)pPion->Clone(); pProt->SetLineColor(kBlue); pProt->SetParameter(0,AliPID::ParticleMass(AliPID::kProton)); pC->cd(1); pDxDy->Draw(); //distance between mip and track intersection pC->cd(2); pMipQ->Draw(); pC->cd(3); pThP->Draw(); pPion->Draw("same"); pKaon->Draw("same"); pProt->Draw("same"); //Theta Ckov versus p + theoretical curves pC->cd(4); pChiTh->Draw(); //Theta Ckov error versus theta Ckov TCanvas *pC2=new TCanvas("c2",summary.Data()); pC2->Divide(2,2); pC2->cd(1); pProbPi->Draw(); pProbMu->Draw("same"); pProbEl->Draw("same"); pC2->cd(2); pProbKa->Draw(); pC2->cd(3); pProbPr->Draw(); pC2->cd(4); pMom->Draw(); } }//EsdQA() //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ void AliRICHTracker::MatrixPrint(Double_t probCut) { // Reads a set of 3 ESD files from current directory and prints out the matrix of probabilities to pion kaon or proton completely blindly withou nay assumption on the contents of files. // Normally it implies that those 3 ESDs contain only particles of the same sort namly pions, kaons and protons in that order. // Arguments: probCut - cut on probability // Returns: none for(Int_t iFile=0;iFile<3;iFile++){ TFile *pFile=TFile::Open(Form("Esd%1i.root",iFile+1),"read"); if(!pFile) {Printf("ERROR: Esd%1i.root does not exist!",iFile+1);return;} TTree *pTr=(TTree*)pFile->Get("esdTree"); if(!pTr) {Printf("ERROR: Esd%1i.root, no ESD tree inside!",iFile+1);return;} AliESD *pEsd=new AliESD; pTr->SetBranchAddress("ESD", &pEsd); Int_t iProtCnt=0,iKaonCnt=0,iPionCnt=0,iUnreconCnt=0,iTrkCnt=0; //counters for(Int_t iEvt=0;iEvtGetEntries();iEvt++){//ESD events loop pTr->GetEvent(iEvt); iTrkCnt+=pEsd->GetNumberOfTracks(); for(Int_t iTrk=0;iTrkGetNumberOfTracks();iTrk++){//ESD tracks loop AliESDtrack *pTrack = pEsd->GetTrack(iTrk);// get next reconstructed track Float_t dx,dy; pTrack->GetRICHdxdy(dx,dy); Float_t theta,phi; pTrack->GetRICHthetaPhi(theta,phi); Double_t prob[5]; pTrack->GetRICHpid(prob); if(pTrack->GetRICHsignal()>0){ if(prob[4]>probCut) iProtCnt++; if(prob[3]>probCut) iKaonCnt++; if((prob[0]+prob[1]+prob[2])>probCut) iPionCnt++; } else iUnreconCnt++; }//ESD tracks loop }//ESD events loop Printf("Bz=%5.2f Events=%i Total tracks=%i No recognized tracks=%i Pion=%i Kaon=%i Proton=%i ProbCut=%.2f", 0.1*pEsd->GetMagneticField(),pTr->GetEntries(),iTrkCnt,iUnreconCnt,iPionCnt,iKaonCnt,iProtCnt,probCut); delete pEsd; pFile->Close();//close AliESDs.root }//files loop } //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++