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Overview of recent progress in 3D field physics in KSTAR

Author(s)
Park, GunyoungIn, YongkyoonPark, Jong-KyuKo, Won-HaLee, JaehyunKim, MinwooShin, GiwookHahn, Sang-HeeKim, SangKyeunYang, Seong MooHu, QimingRhee, TongnyeolChoi, Minjun J.Kim, KiminLee, Hyung-HoJeon, Young-MuKim, Woong-ChaeYoon, Siwoo
Issued Date
2022-04
DOI
10.1007/s40042-022-00423-z
URI
https://scholarworks.unist.ac.kr/handle/201301/57250
Fulltext
https://link.springer.com/article/10.1007/s40042-022-00423-z
Citation
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.80, pp.759 - 786
Abstract
Various 3D field physics challenges of magnetically confined plasmas arise when the driving source comes from either externally applied non-axisymmetric 3D magnetic perturbations or plasma instabilities inside the plasma. Recently, several key outstanding topics of 3D field physics have been extensively studied in the Korean Superconducting Tokamak Advanced Research (KSTAR), such as edge-localized-mode (ELM) control by resonant magnetic perturbation (RMP), error field (EF) control, 3D field effects on rotation and transport, and RMP-induced alteration of divertor heat flux and detachment. KSTAR has a few physically unique features (i.e., high rotation and long-pulse plasmas with a low intrinsic EF) and machine/diagnostic capabilities (i.e., 3-row in-vessel control coil and state-of-the-art 2D/3D imaging diagnostics), which have been taken advantage of until now to address critical 3D field physics issues relevant to ITER and K-DEMO. Among many remarkable achievements are the robust access to and control of n = 1 RMP ELM suppression, along with a development of its physics basis tools, parameter expansion, optimization, and long-pulse control techniques. Nonetheless, a series of unresolved 3D physics themes, as well as limited coverage of 3D field operating regimes, have also been identified as future works for the 3D field research in KSTAR. In this paper, we provide an overview about the recent progress of KSTAR 3D field physics and present future plans of KSTAR 3D research toward a future fusion reactor.
Publisher
KOREAN PHYSICAL SOC
ISSN
0374-4884
Keyword (Author)
KSTARPlasmaFusion3D field physicsEdge-localized-modes (ELMs)Resonant magnetic perturbation (RMP)
Keyword
RESONANT MAGNETIC PERTURBATIONSDIII-DPLASMA RESPONSETRANSPORTTOKAMAKMODESINSTABILITIESSUPPRESSIONSURFACESROTATION

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