PrimaryVertex Class Reference

#include <PrimaryVertex.h>

Inheritance diagram for PrimaryVertex:

Public Member Functions
	PrimaryVertex (const std::string &name, ISvcLocator *pSvcLocator)
StatusCode	initialize ()
StatusCode	execute ()
StatusCode	finalize ()

Detailed Description

Definition at line 16 of file PrimaryVertex.h.

Constructor & Destructor Documentation

PrimaryVertex()

PrimaryVertex::PrimaryVertex	(	const std::string &	name,
		ISvcLocator *	pSvcLocator
	)

Definition at line 46 of file PrimaryVertex.cxx.

                                                                            :
  Algorithm (name, pSvcLocator)
{
  // Declare the properties
  declareProperty("Output", m_output = 0);
  declareProperty("TrackNumberCut", m_trackNumberCut = 1);
  declareProperty("CosThetaCut", m_cosThetaCut=0.93);
  declareProperty("Vz0Cut", m_vz0Cut = 40.0);
  // fit Method
  declareProperty("FitMethod", m_fitMethod = 0);
  // for global method
  declareProperty("Chi2CutOfGlobal", m_globalChisqCut = 200.0);
 
  // for Kalman method
  declareProperty("ChisqCut", m_chisqCut = 200.0);
  declareProperty("TrackIteration", m_trackIteration = 5);
  declareProperty("VertexIteration", m_vertexIteration = 5);
  declareProperty("Chi2CutforTrkIter", m_chi2CutforTrkIter = 0.1);
  declareProperty("FreedomCut", m_freedomCut = 1);
  declareProperty("Chi2CutforSmooth", m_chi2CutforSmooth = 200.0);
  //declareProperty("MinDistance", m_minDistance = 100.0);
  //declareProperty("MinPointX", m_minPointX = 0.1);
  //declareProperty("MinPointY", m_minPointY = 0.1);
}

Member Function Documentation

execute()

StatusCode PrimaryVertex::execute

(

)

Definition at line 224 of file PrimaryVertex.cxx.

{
  MsgStream log(msgSvc(), name());
  log << MSG::INFO << "in execute()" << endmsg;
 
  cout.precision(20);
  ///////////////////////////////////////////
  //  Read REC information
  //////////////////////////////////////////
  SmartDataPtr<Event::EventHeader> eventHeader(eventSvc(),"/Event/EventHeader");
  SmartDataPtr<EvtRecEvent> recEvent(eventSvc(), EventModel::EvtRec::EvtRecEvent);
  SmartDataPtr<EvtRecTrackCol> recTrackCol(eventSvc(), EventModel::EvtRec::EvtRecTrackCol);
  log << MSG::DEBUG << "run and event = " << eventHeader->runNumber() 
                                           << " " << eventHeader->eventNumber() << endreq;
  log << MSG::DEBUG <<"ncharg, nneu, tottks = "
          << recEvent->totalCharged() << " , "  << recEvent->totalNeutral() << " , "
          << recEvent->totalTracks() <<endreq;
  m_sel_number[0]++;
  /*
  if (eventHeader->eventNumber() % 1000 == 0) {
    cout << "Event number = " << eventHeader->eventNumber() << endl;
  }*/
 
  EvtRecPrimaryVertex* aNewEvtRecPrimaryVertex = new EvtRecPrimaryVertex;
 
  StatusCode sc = RegisterEvtRecPrimaryVertex(aNewEvtRecPrimaryVertex, log);
  if (sc != StatusCode::SUCCESS) {
    return sc;
  }
  
  // Cut 1 : for anything sample, at least 3 charged tracks
  if (recEvent->totalCharged() < m_trackNumberCut) {
    return StatusCode::SUCCESS;
  }
  m_sel_number[1]++;
 
  Vint icp, icm, iGood;
  SelectGoodChargedTracks(recEvent, recTrackCol, icp, icm, iGood);
 
  // Cut 2 : for anything sample, at least 3 good charged tracks 
  if (iGood.size() < m_trackNumberCut) {
    return StatusCode::SUCCESS;
  } 
  m_sel_number[2]++;
 
  //  Vertex Fit
  VertexParameter vxpar;
  InitVertexParameter(vxpar);
 
  // For Global Vertex Fitting
  if (m_fitMethod == 0) {
    VertexFit* vtxfit = VertexFit::instance();
    vtxfit->init();
    Vint tlis, trkidlis;
    for (int i = 0; i < iGood.size(); i++) {
      int trk_id = iGood[i];
      EvtRecTrackIterator itTrk = recTrackCol->begin() + trk_id;
      RecMdcKalTrack *kalTrk = (*itTrk)->mdcKalTrack();
      RecMdcKalTrack::setPidType(RecMdcKalTrack::pion);
      WTrackParameter wtrk(xmass[2], kalTrk->helix(), kalTrk->err());
      vtxfit->AddTrack(i ,wtrk);
      tlis.push_back(i);
      trkidlis.push_back(trk_id);
    } 
    vtxfit->AddVertex(0, vxpar, tlis);
    if(!vtxfit->Fit(0)) return StatusCode::SUCCESS;  //FIXME
    if(vtxfit->chisq(0) > m_globalChisqCut) return StatusCode::SUCCESS; //FIXME
    if (m_output == 1) {
      m_chig = vtxfit->chisq(0);
      m_ndofg = 2 * iGood.size() - 3;
      m_probg = TMath::Prob(m_chig, m_ndofg);
      HepVector glvtx = vtxfit->Vx(0);
      m_gvx = glvtx[0];
      m_gvy = glvtx[1];
      m_gvz = glvtx[2];
      m_tuple1->write();
    }
/*
    cout << "========  After global vertex fitting =============" << endl;
    cout << "Event number = " << eventHeader->eventNumber() << endl;
    cout << "NTracks: " << iGood.size() << endl;
    cout << "Chisq: " << vtxfit->chisq(0) << endl;
    cout << "Ndof: " << 2 * iGood.size() - 3 << endl;
    cout << "FitMethod: "<< " 0 " << endl;
    cout << "Vertex position: " << vtxfit->Vx(0)<< endl;
    cout << "Vertex resolution: " << vtxfit->Evx(0) << endl;
    cout << "track id list : " << endl;
    for (int j = 0; j < trkidlis.size(); j++) {
      cout << trkidlis[j] << "  ";
    }
    cout << " " << endl; */
 
    aNewEvtRecPrimaryVertex->setNTracks(iGood.size());
    aNewEvtRecPrimaryVertex->setTrackIdList(trkidlis);
    aNewEvtRecPrimaryVertex->setChi2(vtxfit->chisq(0));
    aNewEvtRecPrimaryVertex->setNdof(2 * iGood.size() - 3);
    aNewEvtRecPrimaryVertex->setFitMethod(0);
    aNewEvtRecPrimaryVertex->setVertex(vtxfit->Vx(0));
    aNewEvtRecPrimaryVertex->setErrorVertex(vtxfit->Evx(0));
    aNewEvtRecPrimaryVertex->setIsValid(true);
 
  } else if (m_fitMethod == 1) { 
    // For Kalman Vertex Fitting
    KalmanVertexFit *kalvtx = KalmanVertexFit::instance();
    kalvtx->init();
    kalvtx->initVertex(vxpar);
    kalvtx->setChisqCut(m_chisqCut);
    kalvtx->setTrackIteration(m_trackIteration);
    kalvtx->setVertexIteration(m_vertexIteration);
    kalvtx->setTrackIterationCut(m_chi2CutforTrkIter);
    for(int i = 0; i < iGood.size(); i++) {
      int trk_id = iGood[i];
      EvtRecTrackIterator itTrk = recTrackCol->begin()+trk_id;
      RecMdcKalTrack *kalTrk = (*itTrk)->mdcKalTrack();
      RecMdcKalTrack::setPidType(RecMdcKalTrack::pion);
      HTrackParameter htrk(kalTrk->helix(), kalTrk->err(), trk_id, 2);
      kalvtx->addTrack(htrk);
    }
    kalvtx->filter();
 
    //int freedomCut = -3 + 2*m_trackNumberCut;
    if(kalvtx->ndof() >=  m_freedomCut) {   //Cut : add 2 when add every track
      //for(int i = 0; i < kalvtx->numTrack(); i++) {
      for(int i = 0; i < iGood.size(); i++) {
        if (m_output == 1) {
          m_chif = kalvtx->chiF(i);
          m_chis = kalvtx->chiS(i);
          m_probs = TMath::Prob(m_chis, 2);
          m_probf = TMath::Prob(m_chif, 2);
          m_tuple2->write();
        }
        if(kalvtx->chiS(i) > m_chi2CutforSmooth) kalvtx->remove(i);
      }
    }
    if(kalvtx->ndof() >= m_freedomCut) { //FIXME  to Rhopi is 0 , others are 1
      for(int i = 0; i < iGood.size(); i++) {
        kalvtx->smooth(i);
 
        HepVector Pull(5, 0);
        Pull = kalvtx->pull(i);
        if (m_output == 1) {
          m_pull_drho = Pull[0];
          m_pull_phi = Pull[1];
          m_pull_kapha = Pull[2];
          m_pull_dz = Pull[3];
          m_pull_lamb = Pull[4];
          m_pull_momentum = kalvtx->pullmomentum(i);
          m_tuple3->write();
        }
      }
      if (m_output == 1) {
        m_chik = kalvtx->chisq();
        m_ndofk = kalvtx->ndof();
        m_probk = TMath::Prob(m_chik, m_ndofk);
        HepVector xp(3, 0);
        xp = kalvtx->x();
        m_kvx = xp[0];
        m_kvy = xp[1];
        m_kvz = xp[2];
        m_tuple4->write();
      }
 
      m_sel_number[3]++;
    /* 
      cout << "========  After Kalman vertex fitting =============" << endl;
      cout << "NTracks: " << kalvtx->numTrack() << endl;
      cout << "Chisq: " << kalvtx->chisq() << endl;
      cout << "Ndof: " <<  kalvtx->ndof() << endl;
      cout << "FitMethod: "<< " 1 " << endl;
      cout << "Vertex position: " << kalvtx->x() << endl;
      cout << "Vertex resolution: " << kalvtx->Ex() << endl;
      for (int j = 0; j < (kalvtx->trackIDList()).size(); j++) {
        cout << kalvtx->trackIDList()[j] << "  ";
      }
      cout << " " << endl;*/
 
      aNewEvtRecPrimaryVertex->setNTracks(kalvtx->numTrack());
      aNewEvtRecPrimaryVertex->setTrackIdList(kalvtx->trackIDList()); 
      aNewEvtRecPrimaryVertex->setChi2(kalvtx->chisq());
      aNewEvtRecPrimaryVertex->setNdof(kalvtx->ndof());
      aNewEvtRecPrimaryVertex->setFitMethod(1);
      aNewEvtRecPrimaryVertex->setVertex(kalvtx->x());
      aNewEvtRecPrimaryVertex->setErrorVertex(kalvtx->Ex());
      aNewEvtRecPrimaryVertex->setIsValid(true);
 
    }
  }
  return StatusCode::SUCCESS;
}

finalize()

StatusCode PrimaryVertex::finalize

(

)

Definition at line 416 of file PrimaryVertex.cxx.

{
  MsgStream log(msgSvc(), name());
  log << MSG::INFO << "in finalize()" << endmsg;
 
  log << MSG::ALWAYS << "==================================" << endreq;
  log << MSG::ALWAYS << "survived event :";
  for(int i = 0; i < 10; i++){
    log << MSG::ALWAYS << m_sel_number[i] << " ";
  }
  log << MSG::ALWAYS << endreq;
  log << MSG::ALWAYS << "==================================" << endreq;
  return StatusCode::SUCCESS;
}

initialize()

StatusCode PrimaryVertex::initialize

(

)

Definition at line 72 of file PrimaryVertex.cxx.

{
  MsgStream log(msgSvc(), name());
  log << MSG::INFO << "in initialize()" << endmsg;
 
  for(int i = 0; i < 15; i++){
    m_sel_number[i] = 0;
  }
 
  StatusCode status;
 
  if (m_output == 1) {
    NTuplePtr nt1(ntupleSvc(), "FILE999/glbvtx");
    if(nt1) m_tuple1 = nt1;
    else {
      m_tuple1 = ntupleSvc()->book ("FILE999/glbvtx", CLID_ColumnWiseTuple, "global vertex");
      if(m_tuple1) {
        status = m_tuple1->addItem("gvx", m_gvx);
        status = m_tuple1->addItem("gvy", m_gvy);
        status = m_tuple1->addItem("gvz", m_gvz);
        status = m_tuple1->addItem("chig", m_chig);
        status = m_tuple1->addItem("ndofg", m_ndofg);
        status = m_tuple1->addItem("probg", m_probg);
      } else {
        log << MSG::ERROR << "Cannot book N-tuple:" << long(m_tuple1) << endmsg;
        return StatusCode::FAILURE;
      }
    }
 
    NTuplePtr nt2(ntupleSvc(), "FILE999/chisq"); //chisq of Kalman filter 
    if(nt2) m_tuple2 = nt2;
    else {
      m_tuple2 = ntupleSvc()->book ("FILE999/chisq", CLID_ColumnWiseTuple, "chi-square of ");
      if(m_tuple2) {
        status = m_tuple2->addItem("chis", m_chis);
        status = m_tuple2->addItem("probs", m_probs);
        status = m_tuple2->addItem("chif", m_chif);
        status = m_tuple2->addItem("probf", m_probf);
      } else {
        log << MSG::ERROR << "Cannot book N-tuple:" << long(m_tuple2) << endmsg;
        return StatusCode::FAILURE;
      }
    }
 
    NTuplePtr nt3(ntupleSvc(), "FILE999/Pull");
    if(nt3) m_tuple3 = nt3;
    else {
      m_tuple3 = ntupleSvc()->book ("FILE999/Pull", CLID_ColumnWiseTuple, "Pull");
      if(m_tuple3) {
        status = m_tuple3->addItem("pull_drho", m_pull_drho);
        status = m_tuple3->addItem("pull_phi", m_pull_phi);
        status = m_tuple3->addItem("pull_kapha", m_pull_kapha);
        status = m_tuple3->addItem("pull_dz", m_pull_dz);
        status = m_tuple3->addItem("pull_lamb", m_pull_lamb);
        status = m_tuple3->addItem("pull_momentum", m_pull_momentum);
      } else {
        log << MSG::ERROR << "Cannot book N-tuple:" << long(m_tuple3) << endmsg;
        return StatusCode::FAILURE;
      }
    }
 
    NTuplePtr nt4(ntupleSvc(), "FILE999/kalvtx"); 
    if(nt4) m_tuple4 = nt4;
    else {
      m_tuple4 = ntupleSvc()->book ("FILE999/kalvtx", CLID_ColumnWiseTuple, "kalman vertex");
      if(m_tuple4) {
        status = m_tuple4->addItem("kvx", m_kvx);
        status = m_tuple4->addItem("kvy", m_kvy);
        status = m_tuple4->addItem("kvz", m_kvz);
        status = m_tuple4->addItem("chik", m_chik);
        status = m_tuple4->addItem("ndofk", m_ndofk);
        status = m_tuple4->addItem("probk", m_probk);
      } else {
        log << MSG::ERROR << "Cannot book N-tuple:" << long(m_tuple4) << endmsg;
        return StatusCode::FAILURE;
      }
    }
  } //end if output
 
  log << MSG::INFO << "successfully return from initialize()" <<endmsg;
  return StatusCode::SUCCESS;
}

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The documentation for this class was generated from the following files:

• PrimaryVertex.h
• PrimaryVertex.cxx