J. M. Kwon
13 Papers
94 Citations
J. M. Kwon is an academic researcher. The author has contributed to research in topics: Collisionality & KSTAR. The author has an hindex of 8, co-authored 13 publications.
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Papers
On hybrid scenarios in KSTAR
Yong-Su Na,Y. H. Lee,C.S. Byun,S. K. Kim,Chanyoung Lee,M.S. Park,SeongMoo Yang,SeongMoo Yang,Boseong Kim,Young-Mu Jeon,Gyungjin Choi,Gyungjin Choi,J. Citrin,J. W. Juhn,Jisung Kang,Hyun-Seok Kim,Jayhyun Kim,Won-Ha Ko,J. M. Kwon,W.C. Lee,Minho Woo,S. Yi,S.W. Yoon,Gunsu Yun,Kstar Team +24 more
TL;DR: In this paper, the status of hybrid scenario experiments in Korea Superconducting Tokamak Advanced Research (KSTAR) is reported, where the hybrid scenario is defined as stationary discharges with B N >= 2.4 and H_89 ≥ 2.0 at q_95 < 6.5.
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Intrinsic rotation reversal, non-local transport, and turbulence transition in KSTAR L-mode plasmas
Yuejiang Shi,J. M. Kwon,Patrick Diamond,Won-Ha Ko,Minjun Choi,S. H. Ko,Sang-hee Hahn,D.H. Na,J. Leem,J.A. Lee,SeongMoo Yang,K. D. Lee,M. Joung,J. H. Jeong,Jung-Woo Yoo,W. C. Lee,Jaehyun Lee,Y. S. Bae,S. G. Lee,S. W. Yoon,Katsumi Ida,Yong-Su Na +21 more
TL;DR: In this article, the authors demonstrate that both the cutoff density for non-local heat transport (NLT) and the threshold density for intrinsic rotation reversal can be determined by the collisionality.
Observation of electron driven quasi-coherent modes and their connection with core intrinsic rotation in KSTAR ECH and ohmic L-mode plasmas
Wai Ming Lee,J. M. Kwon,S. H. Ko,J. Leem,G. S. Yun,Hyeon K. Park,Yoon Soo Park,Kang Wook Kim,N. C. LuhmannJr.,Kstar Team +9 more
TL;DR: Quasi-coherent (QC) modes, known as a type of trapped electron mode (TEM) turbulence, have been measured in the outboard core region of low-density electron cyclotron resonant heating (ECH) injected and ohmically heated L-mode plasmas on the Korea Superconducting Tokamak Advanced Research (KSTAR) device as discussed by the authors.
Ion temperature and toroidal velocity edge transport barriers in KSTAR
Won-Ha Ko,S. H. Ko,J. M. Kwon,Patrick Diamond,Katsumi Ida,Young-Mu Jeon,J. H. Lee,S. W. Yoon,J. G. Kwak +8 more
TL;DR: In this paper, the structure and evolution of the ion temperature and toroidal rotation profile have been investigated in neutral beam injection (NBI)-heated KSTAR H-mode plasmas, both without and with resonant magnetic pertubations (RMPs).
A comprehensive study on rotation reversal in KSTAR: experimental observations and modelling
D.H. Na,Yong-Su Na,C. Angioni,SeongMoo Yang,J. M. Kwon,Hogun Jhang,Yann Camenen,Sang-Gu Lee,Yuejiang Shi,Won-Ha Ko,J.A. Lee,T.S. Hahm,Kstar Team +12 more
TL;DR: Camenen et al. as discussed by the authors adapted the more general definition of rotation reversal, a large change of the intrinsic toroidal rotation gradient produced by minor changes in the control parameters, which is commonly observed in KSTAR regardless of the operating conditions.
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