Research output per year
Research output per year
Research activity per year
Organization: Helsinki Institute of Physics, University of Helsinki, Helsinki, Finland
Email: [email protected]
Employment:
| 2021- Assistant Professor, Gangneung-Wonju National University (Visiting scalar, Helsinki Institute of Phyiscs)
l 2018-2021 Senior Researcher, Helsinki Institute of Physics, University of Helsinki
l 2013-2018 Research Professor, Kyungpook National University
l 2010-2013 Research Associate, Sungkyunkwan University (based full-time at CERN)
l 2010 (Oct) Research Associate, University of Toronto (based full-time at CERN)
l 2007-2010 Research Associate, Centre for Particle Physics, University of Alberta
(based at CERN from Sep 2009)
l 2005-2007 Post-doctoral Research Associate, University of Pittsburgh
Education:
l 2005 Ph.D., Physics, Kyungpook National University, Daegu, Korea
Thesis: Search for Gauge-Mediated SUSY Breaking in Diphoton Events in Collisions at Ös = 1.96 TeV
l 1999 M.Sc., Physics, Kyungpook National University, Daegu, Korea
Thesis: Measurement of Parity Violation with Polarized Electrons to Proton
l 1997 B.Sc., Physics, Kyungpook National University, Daegu, Korea
Honors:
l 2002-2003 Fellowship for the promising Ph.D. candidate, Korea Research Foundation
l 2001-2004 Research Fellow, the Center for High Energy Physics in Korea
l 1994-1996 University Scholarship, Kyungpook National University
Funding:
l 2016-2018 Basic Research Grant, National Research Foundation of Korea
Research Experiences with Collider-based Particle Physics:
CMS experiment
l |
2018- |
Measurements of underlying event and top-quark mass. Multi-jet analysis for jet energy corrections and uncertainties.
|
l |
2016-2018 |
Searches for new physics using vector boson fusion (VBF), bottom fermion fusion (BFF) and highly boosted Z bosons. Analysis framework. VBF HLT trigger development and efficiency measurement. Monte Carlo signal validation for BFF selection. Isolation study of the boosted objects.
|
l |
2014-2015 |
Alternative determination and consistency checks for the top-quark mass. Feasibility study of analysis method for the modeling of background shape.
|
l |
2012-2013 |
Gas leak searches, measurements and reparations of Resistive Plate Chambers (RPCs) in the CMS underground cavern. Estimation of the muon identification efficiency improvement by the muon endcap upgrades. Implementation of a new muon reconstruction algorithm using RPC and tracker. Measurement of muon reconstruction improvement by the RPCs.
|
l |
2010-2011 |
Measurement of the production cross section using particle flow algorithm. Performance study of the combined conversion track reconstruct algorithm in search for Higgs to gg.
|
ATLAS experiment
l |
2009-2010 |
Identification of jet mis-reconstructed from individual noisy channels or problematic regions in the Liquid Argon Calorimeter, and sources of fake missing transverse energy, and cosmic-ray backgrounds. Investigation of the candidate events in the high multiplicity object signature search.
|
l |
2007-2008 |
Development of a distributed trigger system using LHC computing grid. Evaluation of the system performance on event reconstruction using Linux farms and Grids in ATLAS Canada Tier-1 and Tier-2 centers.
|
CDF experiment
l |
2003-2004 |
Search for anomalous production of diphoton events with missing transverse energy. Improved limits on Gauge-Mediated supersymmetry breaking models. Best limits by combining the results of the CDF and DØ searches. Assembly, test and installation of Central Pre-Radiator (CPR) for Run IIb upgrade. Commissioning of CPR detector with cosmic rays.
|
l |
2001-2002 |
Estimation of the total expected thickness of CDF detector materials for photon background subtraction. Measurement of the photon conversion probability for a conversion method of photon background subtraction. Alignment of CPR detector. Effect of Time-of-Flight detector on electromagnetic shower profile in photon identification. |
Research Experiences with Neutrino Physics:
MINOS experiment
l |
2005-2007 |
Investigation of a method that effectively yields the shape of the neutrino flux as a function of energy (the so-called low-nu method) in measurement of neutrino and antineutrino total cross sections. PMT gain calibrations using an LED based light-injection system for near and far detectors. Prediction of the hadron-nucleus cross section to analyze experimental information for GENIE C++ Neutrinos MC Generator. |
MINERvA experiment
l |
2006-2007 |
Integration test of the DAQ system for prototype readout electronics using a PC/VME controller. Basic input/output functionality, cross-talk and ADC pedestal shift measurements using the test stand that injects external charges into input channels. |
Detector R&D:
l |
1999-2000 |
Detector R&D in a lab at a university - prototype fabrication and testing of Bakelite RPC chamber. CMS detector simulation tool installation and test.
|
l |
1997-1998 |
HAPPEX experiment at Jefferson Lab. Geometry design and material considerations for electron counters to probe the strange structure of the nucleon via parity violating electron scattering. Study of a systematic effect by polarized electron beam. |
Services:
l |
2019- |
CMS ARC member and Top PAG contact of Jet-MET
|
l |
2015 |
Teacher in CMS Data Analysis School
|
l |
2012-2013 |
Commissioning coordinator for the RPC detector in Long Shutdown 1
|
l |
2011-2012 |
Volunteer guide to CERN Exchange Program for Korean Science Teachers
|
l |
2009-2010 |
Data Quality Monitoring expert for the Jet/ETmiss group, conducting a Data Quality Assessment on processed data
|
l |
2009 |
ATLAS event scanning team for the visual investigation of interesting candidates for multi-jets, W/Z, Top, SUSY and Exotics at LHC startup |
Teaching Experiences:
l |
1997-1999 |
Undergraduate Teaching Assistant, Kyungpook National University General Physics Laboratory
|
l |
2000 |
Undergraduate Teaching Assistant, Kyungpook National University Quantum Mechanics Course |
Research output: Contribution to journal › Article › Scientific › peer-review
Research output: Contribution to journal › Article › Scientific › peer-review
Research output: Contribution to journal › Article › Scientific › peer-review
Research output: Contribution to journal › Article › Scientific › peer-review
Research output: Contribution to journal › Article › Scientific › peer-review