W
Woochang Lee
Researcher at Ulsan National Institute of Science and Technology
Publications - 56
Citations - 1283
Woochang Lee is an academic researcher from Ulsan National Institute of Science and Technology. The author has contributed to research in topics: KSTAR & Tokamak. The author has an hindex of 19, co-authored 53 publications receiving 1116 citations. Previous affiliations of Woochang Lee include Pohang University of Science and Technology & Dickinson College.
Papers
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Journal ArticleDOI
Two-dimensional visualization of growth and burst of the edge-localized filaments in KSTAR H-mode plasmas.
Gunsu Yun,Woochang Lee,Minjun Choi,Jongjun M. Lee,Hyeon K. Park,B. Tobias,Calvin Domier,Neville C. Luhmann,Ajh Tony Donné,Jaehyun Lee +9 more
TL;DR: The filamentary nature and dynamics of edge-localized modes (ELMs) in the KSTAR high-confinement mode plasmas have been visualized in 2D via electron cyclotron emission imaging.
Journal ArticleDOI
Development of KSTAR ECE imaging system for measurement of temperature fluctuations and edge density fluctuations.
Gunsu Yun,Woochang Lee,Minjun Choi,Jangwoo Kim,Hyeon K. Park,Calvin Domier,B. Tobias,T. Liang,X. Kong,Neville C. Luhmann,Ajh Tony Donné +10 more
TL;DR: An improved ECEI system capable of visualizing both high- and low-field sides simultaneously with considerably better spatial coverage has been developed for the KSTAR tokamak in order to capture the full picture of core MHD dynamics.
Journal ArticleDOI
Short-scale turbulent fluctuations driven by the electron-temperature gradient in the national spherical torus experiment.
E. Mazzucato,David R. Smith,R. E. Bell,Stanley Kaye,J. C. Hosea,B.P. LeBlanc,James R. Wilson,P.M. Ryan,Calvin Domier,Neville C. Luhmann,Howard Yuh,Woochang Lee,Hyeon K. Park +12 more
TL;DR: Experimental observations and agreement with numerical results from a linear gyrokinetic stability code support the conjecture that the observed turbulence is driven by the electron-temperature gradient.
Journal ArticleDOI
Quasi 3D ECE imaging system for study of MHD instabilities in KSTAR
Gunsu Yun,Woochang Lee,Minjun Choi,Jaehyun Lee,M. Kim,J. Leem,Y. Nam,G.H. Choe,Hyeon K. Park,H. Park,Dong-Sik Woo,Kang Wook Kim,Calvin Domier,Neville C. Luhmann,N. Ito,Atsushi Mase,S. G. Lee +16 more
TL;DR: For the first time, the dynamical evolutions of MHD instabilities from the plasma core to the edge have been visualized in quasi-3D for a wide range of the KSTAR operation.
Journal ArticleDOI
Overview of KSTAR initial operation
M. Kwon,Y.K. Oh,H.L. Yang,H.K. Na,Y.S. Kim,Jong-Gu Kwak,W.C. Kim,J.Y. Kim,Joon-Wook Ahn,Y.S. Bae,S.H. Baek,J.G. Bak,E.N. Bang,Choong-Seock Chang,D.H. Chang,I. Chavdarovski,Z.Y. Chen,K.W. Cho,Moo-Hyun Cho,Wonho Choe,J.H. Choi,Y. Chu,Kyu-Sun Chung,Patrick Diamond,H.J. Do,N.W. Eidietis,A.C. England,Larry R. Grisham,T.S. Hahm,S.H. Hahn,W.S. Han,Takaki Hatae,D. L. Hillis,J.S. Hong,Suk-Ho Hong,S.R. Hong,D. Humphrey,Yong-Seok Hwang,A.W. Hyatt,Yongkyoon In,G.L. Jackson,Y.B. Jang,You-Moon Jeon,J.I. Jeong,N.Y. Jeong,S.H. Jeong,H.G. Jhang,J.K. Jin,M. Joung,J. Ju,Kazuo Kawahata,C.H. Kim,D.H. Kim,Hee-Su Kim,Hyun-Seok Kim,H.K. Kim,H.T. Kim,Jik-Soo Kim,J.C. Kim,Jong-Su Kim,Jung-Su Kim,Kyung-Min Kim,Ki Min Kim,K.P. Kim,M.K. Kim,S.H. Kim,S.S. Kim,S.T. Kim,S.W. Kim,Y.J. Kim,Y.K. Kim,Y.O. Kim,W.H. Ko,Yuichiro Kogi,J.D. Kong,S. Kubo,R. Kumazawa,S.W. Kwak,J.M. Kwon,O. J. Kwon,M. Leconte,D.G. Lee,D.K. Lee,D.R. Lee,D.S. Lee,H.J. Lee,Jaehyun Lee,K.D. Lee,K.S. Lee,S.G. Lee,Seung Hun Lee,S.I. Lee,S.M. Lee,T.G. Lee,W.C. Lee,Woochang Lee,J. Leur,D.S. Lim,John Lohr,A. Mase,D. Mueller,K.M. Moon,T. Mutoh,Yong-Su Na,Yoshio Nagayama,Yong-Un Nam,Won Namkung,B.H. Oh,S.G. Oh,S.T. Oh,B.H. Park,D.S. Park,Hyeon K. Park,H.T. Park,Jong-Kyu Park,J.S. Park,K.R. Park,M.K. Park,S.H. Park,S.I. Park,Y.M. Park,Y. S. Park,B. Patterson,S.A. Sabbagh,K. Saito,S. Sajjad,Keishi Sakamoto,Dongcheol Seo,S.H. Seo,J.C. Seol,Yuejiang Shi,N.H. Song,H. J. Sun,L. Terzolo,M.L. Walker,S.J. Wang,Kazuhiro Watanabe,A.S. Welander,Hyun-Jong Woo,I.S. Woo,Masatoshi Yagi,Y. Yaowei,Y. Yonekawa,K.I. Yoo,J.W. Yoo,G.S. Yoon,S.W. Yoon +146 more
TL;DR: The first phase (2008-2012) of operation of KSTAR was dedicated to the development of operational capabilities for a superconducting device with relatively short pulse as mentioned in this paper, which achieved steady-state operations with high performance plasmas relevant to ITER and future reactors.