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 …

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 …

Overview and recent progress of KSTAR diagnostics

SG Lee, YU Nam, JG Bak, JW Juhn… - Journal of …, 2022 - iopscience.iop.org
The 14 th experimental campaign from the Korea Superconducting Tokamak Advanced
Research (KSTAR) device has passed since the first experimental campaign was carried out …

Highest fusion performance without harmful edge energy bursts in tokamak

SK Kim, R Shousha, SM Yang, Q Hu, SH Hahn… - Nature …, 2024 - nature.com
The path of tokamak fusion and International thermonuclear experimental reactor (ITER) is
maintaining high-performance plasma to produce sufficient fusion power. This effort is …

Multi-chord IR–visible two-color interferometer on KSTAR

JW Juhn, KC Lee, TG Lee, HM Wi, YS Kim… - Review of Scientific …, 2021 - pubs.aip.org
Major parts of an IR–visible two-color interferometer (TCI) on KSTAR have been upgraded
for the multi-chord operation:(1) a diode-pumped-solid-state (DPSS) laser (660 nm) …

Enhancement of detachment control with simplified real-time modelling on the KSTAR tokamak

D Eldon, H Anand, JG Bak, J Barr… - Plasma Physics and …, 2022 - iopscience.iop.org
Detachment control based on ion saturation current I sat measurements from Langmuir
probes (LPs) is implemented in the KSTAR tokamak and shown to be capable of following …

Sustainable internal transport barrier discharge at KSTAR

J Chung, SH Hahn, H Han, J Kang, HS Kim… - Nuclear …, 2021 - iopscience.iop.org
We explore the inboard-limited internal transport barrier (ITB) as an alternative advanced
operation scenario for KSTAR. This paper presents in detail the progress of the ITB …

Preemptive RMP-driven ELM crash suppression automated by a real-time machine-learning classifier in KSTAR

G Shin, H Han, M Kim, SH Hahn, WH Ko… - Nuclear …, 2022 - iopscience.iop.org
Suppression or mitigation of edge-localized mode (ELM) crashes is necessary for ITER. The
strategy to suppress all the ELM crashes by the resonant magnetic perturbation (RMP) …

The new single crystal dispersion interferometer installed on KSTAR and its first measurement

DG Lee, KC Lee, JW Juhn, J Lee… - Review of Scientific …, 2021 - pubs.aip.org
Dispersion interferometers have been used to measure line integrated electron densities
from many fusion devices. To optically suppress noise due to mechanical vibrations, a …

Parametric study of linear stability of toroidal Alfvén eigenmode in JET and KSTAR

J Seo, J Kim, J Mailloux, RJ Dumont… - Nuclear …, 2020 - iopscience.iop.org
Parametric dependencies of the linear stability of toroidal Alfvén eigenmode (TAE) in the
presence of neutral beam injection (NBI) are investigated to understand the beam drive and …