////////////////////////////////////////////////////////////////////////
-AliUA1JetFinder::AliUA1JetFinder()
-
+AliUA1JetFinder::AliUA1JetFinder():
+ fHeader(0x0),
+ fLego(0x0)
{
- // Constructor
- fHeader = 0x0;
- fLego = 0x0;
+ // Default constructor
}
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
-void AliUA1JetFinder::FindJets()
+void AliUA1JetFinder::FindJetsTPC()
{
// initialize event, look for jets, download jet info
delete percentage;
}
+void AliUA1JetFinder::FindJets()
+{ // Find jets with TPC or EMCAL or TPC + EMCAL information
+ // initialize event, look for jets, download jet info
+
+ // 1) transform input to pt,eta,phi plus lego
+ AliJetUnitArray *fUnit = fReader->GetUnitArray();
+ Int_t nIn = fUnit->GetUnitEntries();
+ Int_t fOption = fReader->GetReaderHeader()->GetDetector();
+ Int_t fDebug = fReader->GetReaderHeader()->GetDebug();
+
+ if(fDebug>1){
+ printf("Inside FindJets function ! \n");
+ printf("fOption : %d \n",fOption);
+ }
+
+ if(fDebug>10){
+ cout << "fUnit : " << fUnit << endl;
+ printf("nIn = fUnit->GetUnitEntries() : %d \n",nIn);
+ }
+
+ if(fDebug>10){
+ printf(" -----------------------------------------------------------------\n");
+ printf(" --- All inputs in fUnitArray ---\n");
+ for(Int_t i=0; i<nIn ; i++){
+ if(fUnit[i].GetUnitEnergy()!=0){
+ printf(" -----------------------------------------------------------------\n");
+ cout << " | ID : " << fUnit[i].GetUnitID() << " | Eta : " << fUnit[i].GetUnitEta() << " | Phi : " << fUnit[i].GetUnitPhi() << " | Energy : " << fUnit[i].GetUnitEnergy() << " |" <<endl;
+ }
+ }
+ }
+
+ if (nIn == 0) return;
+
+ Int_t nCandidateCut = 0;
+ Int_t nCandidateCut2 = 0;
+ Int_t nCandidate = 0;
+ for (Int_t i = 0; i < nIn; i++){
+ if(fUnit[i].GetUnitEnergy()>0. && fUnit[i].GetUnitCutFlag()==1) {
+ // Number of good tracks/digits which have passed the pt cut
+ nCandidateCut += 1;
+ }
+ if(fUnit[i].GetUnitEnergy()>0.) {
+ // Number of good tracks/digits without pt cut
+ nCandidate += 1;
+ }
+ }
+
+ if(fDebug>=3){
+ cout << "nCandidate : " << nCandidate << endl;
+ cout << "nCandidateCut : " << nCandidateCut << endl;
+ cout << "nCandidateCut2 : " << nCandidateCut2 << endl;
+ }
+
+ // local arrays for input No Cuts
+ // Both pt < ptMin and pt > ptMin
+ Float_t* enT = new Float_t[nCandidate];
+ Float_t* ptT = new Float_t[nCandidate];
+ Float_t* etaT = new Float_t[nCandidate];
+ Float_t* phiT = new Float_t[nCandidate];
+ Float_t* detaT = new Float_t[nCandidate];
+ Float_t* dphiT = new Float_t[nCandidate];
+ Float_t* cFlagT = new Float_t[nCandidate];
+ Float_t* cClusterT = new Float_t[nCandidate];
+ Float_t* idT = new Float_t[nCandidate];
+ Int_t loop1 = 0;
+
+ fJets->SetNinput(nCandidate);
+
+ if(fDebug>3){
+ cout << "nCandidate : " << nCandidate << endl;
+ // cout << "nMultCandidate : " << nMultCandidate << endl;
+ }
+
+ Float_t *etCell = new Float_t[nIn]; //! Cell Energy - Extracted from UnitArray
+ Float_t *etaCell = new Float_t[nIn]; //! Cell eta - Extracted from UnitArray
+ Float_t *phiCell = new Float_t[nIn]; //! Cell phi - Extracted from UnitArray
+
+ // Information extracted from fUnitArray
+ for(Int_t i=0; i<nIn; i++)
+ {
+ if(fUnit[i].GetUnitCutFlag()==1){
+ etCell[i] = fUnit[i].GetUnitEnergy();
+ if (etCell[i] > 0.0) etCell[i] -= fHeader->GetMinCellEt();
+ if (etCell[i] < 0.0) etCell[i] = 0.;
+ etaCell[i] = fUnit[i].GetUnitEta();
+ phiCell[i] = fUnit[i].GetUnitPhi();
+ }
+ else {
+ etCell[i] = 0.;
+ etaCell[i] = fUnit[i].GetUnitEta();
+ phiCell[i] = fUnit[i].GetUnitPhi();
+ }
+
+ if(fUnit[i].GetUnitEnergy()>0.){
+ ptT[loop1] = fUnit[i].GetUnitEnergy();
+ enT[loop1] = fUnit[i].GetUnitEnergy();
+ etaT[loop1] = fUnit[i].GetUnitEta();
+ phiT[loop1] = fUnit[i].GetUnitPhi();
+ detaT[loop1] = fUnit[i].GetUnitDeta();
+ dphiT[loop1] = fUnit[i].GetUnitDphi();
+ cFlagT[loop1]= fUnit[i].GetUnitCutFlag();
+ idT[loop1] = fUnit[i].GetUnitID();
+ loop1++;
+ }
+ }
+
+
+ if(fDebug > 40) // For comparison
+ {
+ for(Int_t j=0; j<nIn; j++) {
+ if(etCell[j]>0){
+ cout << "etCell[" << j << "] : " << etCell[j] << endl;
+ cout << "etaCell[" << j << "] : " << etaCell[j] << endl;
+ cout << "phiCell[" << j << "] : " << phiCell[j] << endl;
+ }
+ }
+ }
+
+ // Run the algo. Parameters from header
+ // Int_t nTot = (fHeader->GetLegoNbinEta())*(fHeader->GetLegoNbinPhi());
+ Int_t nTot = nIn;
+ Float_t minmove = fHeader->GetMinMove();
+ Float_t maxmove = fHeader->GetMaxMove();
+ Int_t mode = fHeader->GetMode();
+ Float_t precbg = fHeader->GetPrecBg();
+ Int_t ierror;
+
+ ua1_jet_finder(nIn, nTot, etCell, etaCell, phiCell,
+ minmove, maxmove, mode, precbg, ierror);
+
+ // sort jets
+ Int_t * idx = new Int_t[UA1JETS.njet];
+ TMath::Sort(UA1JETS.njet, UA1JETS.etj, idx);
+
+ if(fDebug > 20)
+ {
+ for(Int_t i = 0; i < UA1JETS.njet; i++)
+ {
+ cout << "Number of jets found, UA1JETS.njet : " << UA1JETS.njet << endl;
+ cout << "UA1JETS.etj : " << UA1JETS.etj << endl;
+ cout << "idx[" << i << "] : " << idx[i] << endl;
+ cout << "UA1JETS.etaj[1][" << idx[i] << "] : " << UA1JETS.etaj[1][idx[i]] << endl;
+ cout << "UA1JETS.phij[1][" << idx[i] << "] : " << UA1JETS.phij[1][idx[i]] << endl;
+ cout << "UA1JETS.etj[" << idx[i] << "] : " << UA1JETS.etj[idx[i]] << endl;
+ }
+ }
+
+ // download jet info.
+ for(Int_t i = 0; i < UA1JETS.njet; i++) {
+ // reject events outside acceptable eta range
+ if (((UA1JETS.etaj[1][idx[i]])> (fHeader->GetJetEtaMax()))
+ || ((UA1JETS.etaj[1][idx[i]]) < (fHeader->GetJetEtaMin())))
+ {
+ continue;
+ }
+
+ Float_t px, py,pz,en,pT; // convert to 4-vector
+ px = UA1JETS.etj[idx[i]] * TMath::Cos(UA1JETS.phij[1][idx[i]]);
+ py = UA1JETS.etj[idx[i]] * TMath::Sin(UA1JETS.phij[1][idx[i]]);
+ pz = UA1JETS.etj[idx[i]] /
+ TMath::Tan(2.0 * TMath::ATan(TMath::Exp(-UA1JETS.etaj[1][idx[i]])));
+ en = TMath::Sqrt(px * px + py * py + pz * pz);
+ pT = TMath::Sqrt(px * px + py * py);
+
+ fJets->AddJet(px, py, pz, en);
+
+ }
+
+ // find multiplicities and relationship jet-particle
+ // find also percentage of pt from pythia
+
+ Int_t* injet = new Int_t[nCandidate];
+ Int_t* sflag = new Int_t[nCandidate];
+ for (Int_t i = 0; i < nCandidate; i++) {injet[i]= 0;sflag[i]=0;}
+ Int_t* mult = new Int_t[fJets->GetNJets()];
+ Int_t* ncell = new Int_t[fJets->GetNJets()];
+ Float_t* percentage = new Float_t[fJets->GetNJets()];
+
+ // Instead of using etaT below, it would be interesting to use the previous fUnitArray object
+ // With the particle ID, it is possible to to have access to its physical properties and one can,
+ // for example, set if the corresponding particle is inside or outside the jet with the flag
+ // kOutJet/kInJet, other possibilities...
+
+ for(Int_t i = 0; i < (fJets->GetNJets()); i++) {
+ Float_t pt_sig = 0.0;
+ mult[i] = 0;
+ ncell[i] = UA1JETS.ncellj[i];
+ for (Int_t j = 0; j < nCandidate; j++) {
+ Float_t deta = etaT[j] - fJets->GetEta(i);
+ Float_t dphi = phiT[j] - fJets->GetPhi(i);
+ if (dphi < -TMath::Pi()) dphi= -dphi - 2.0 * TMath::Pi();
+ if (dphi > TMath::Pi()) dphi = 2.0 * TMath::Pi() - dphi;
+ Float_t dr = TMath::Sqrt(deta * deta + dphi * dphi);
+ if (dr < fHeader->GetRadius() && injet[j] == 0) {
+ injet[j] = -(i+1);
+ if(cFlagT[j] == 1 &&
+ (etaT[j] < fHeader->GetLegoEtaMax()) &&
+ (etaT[j] > fHeader->GetLegoEtaMin())) {
+ injet[j] = i+1;
+ mult[i]++;
+ pt_sig+=enT[j];
+ sflag[j]=1;
+ }
+ }
+ if(fDebug>10){
+ cout << "mult[" << i << "] : " << mult[i] << endl;
+ cout << "ncell[" << i << "] : " << ncell[i] << endl;
+ }
+ }
+ percentage[i] = (pt_sig-ncell[i]*UA1JETS.etavg)/
+ ((Double_t) fJets->GetPt(i));
+ }
+
+ fJets->SetNCells(ncell);
+ fJets->SetPtFromSignal(percentage);
+ fJets->SetMultiplicities(mult);
+ fJets->SetInJet(injet);
+ fJets->SetEtaIn(etaT);
+ if(fDebug>10){
+ for(Int_t i=0; i<nCandidate ; i++){
+ cout << "phiT[" << i << "] : " << phiT[i] << endl;
+ cout << "etaT[" << i << "] : " << etaT[i] << endl;
+ }
+ }
+ fJets->SetPhiIn(phiT);
+ fJets->SetPtIn(enT);
+ fJets->SetEtAvg(UA1JETS.etavg);
+ delete etCell;
+ delete etaCell;
+ delete phiCell;
+ delete ncell;
+ delete cFlagT;
+ delete cClusterT;
+ delete enT;
+ delete ptT;
+ delete etaT;
+ delete phiT;
+ delete detaT;
+ delete dphiT;
+ delete injet;
+ delete idx;
+ delete mult;
+ delete percentage;
+
+}
+
+
////////////////////////////////////////////////////////////////////////
void AliUA1JetFinder::Reset()
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff