Interaction between a magnetic island and turbulence

MJ Choi - Reviews of Modern Plasma Physics, 2021 - Springer
Interaction between a magnetic island and turbulence has been intensively studied in recent
years with advance of plasma diagnostics in various plasma experiment devices such as …

Multiscale interaction between a large scale magnetic island and small scale turbulence

MJ Choi, J Kim, JM Kwon, HK Park, Y In, W Lee… - Nuclear …, 2017 - iopscience.iop.org
Multiscale interaction between the magnetic island and turbulence has been demonstrated
through simultaneous two-dimensional measurements of turbulence and temperature and …

Progress of the KSTAR research program exploring the advanced high performance and steady-state plasma operations

YK Oh, S Yoon, YM Jeon, WH Ko, SH Hong… - Journal of the Korean …, 2018 - Springer
Abstract Korea Superconducting Tokamak Advanced Research (KSTAR) program is
strongly focused on solving the scientific and technological issues in steady-state high …

Observation of a new type of self-generated current in magnetized plasmas

YS Na, J Seo, Y Lee, G Choi, M Park, S Park… - Nature …, 2022 - nature.com
A tokamak, a torus-shaped nuclear fusion device, needs an electric current in the plasma to
produce magnetic field in the poloidal direction for confining fusion plasmas. Plasma current …

Mesoscopic transport in KSTAR plasmas: avalanches and the E× B staircase

MJ Choi, JM Kwon, L Qi, PH Diamond… - Plasma Physics and …, 2024 - iopscience.iop.org
The self-organization is one of the most interesting phenomena in the non-equilibrium
complex system, generating ordered structures of different sizes and durations. In tokamak …

Nonlinear Interaction of Edge-Localized Modes and Turbulent Eddies in Toroidal Plasma under Magnetic Perturbation

J Lee, GS Yun, MJ Choi, JM Kwon, YM Jeon, W Lee… - Physical review …, 2016 - APS
The effect of static n= 1 resonant magnetic perturbation (RMP) on the spatial structure and
temporal dynamics of edge-localized modes (ELMs) and edge turbulence in tokamak …

Effects of plasma turbulence on the nonlinear evolution of magnetic island in tokamak

MJ Choi, L Bardōczi, JM Kwon, TS Hahm… - Nature …, 2021 - nature.com
Magnetic islands (MIs), resulting from a magnetic field reconnection, are ubiquitous
structures in magnetized plasmas. In tokamak plasmas, recent researches suggested that …

Experimental observation of the non-diffusive avalanche-like electron heat transport events and their dynamical interaction with the shear flow structure

MJ Choi, H Jhang, JM Kwon, J Chung, M Woo… - Nuclear …, 2019 - iopscience.iop.org
We present experimental observations suggesting that non-diffusive avalanche-like
transport events are a prevalent and universal process in the electron heat transport of …

Integrated RMP-based ELM-crash-control process for plasma performance enhancement during ELM crash suppression in KSTAR

M Kim, G Shin, J Lee, WH Ko, H Han, SH Hahn… - Nuclear …, 2023 - iopscience.iop.org
Abstract The integrated Resonant Magnetic Perturbation (RMP)-based Edge-Localized
Mode (ELM)-crash-control process aims to enhance the plasma performance during the …

Optimization of 3D controlled ELM-free state with recovered global confinement for KSTAR with n= 1 resonant magnetic field perturbation

SK Kim, R Shousha, SH Hahn, AO Nelson, J Wai… - Nuclear …, 2022 - iopscience.iop.org
Mitigation of deleterious heat flux from edge-localized modes (ELMs) on fusion reactors is
often attempted with 3D perturbations of the confining magnetic fields. However, the …