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Park, Hyeon Keo
Fusion Plasma Stability and Confinement Research Lab
Research Interests
  • Fusion, plasma, MHD, turbulence, imaging

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Improved accuracy in the estimation of the tearing mode stability parameters (Delta ' and w(c)) using 2D ECEI data in KSTAR

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Title
Improved accuracy in the estimation of the tearing mode stability parameters (Delta ' and w(c)) using 2D ECEI data in KSTAR
Author
Choi, Minjun J.Yun, Gunsu S.Lee, WoochangPark, Hyeon KeoPark, Young-SeokSabbagh, Steve A.Gibson, Kieran J.Bowman, ChristopherDomier, Calvin W.Luhmann, Neville C., Jr.Bak, Jun-GyoLee, Sang G.
Keywords
tearing mode stability; electron cyclotron emission imaging; synthetic diagnostic
Issue Date
201408
Publisher
INT ATOMIC ENERGY AGENCY
Citation
NUCLEAR FUSION, v.54, no.8, pp.1 - 7
Abstract
The accuracy in estimation of two important tearing mode stability parameters (Delta' and w(c)) is improved by employing two-dimensional (2D) ECE imaging data which help one to overcome the resolution limit of conventional one-dimensional data. The experimentally measured 2D images are directly compared with synthetic ones from a tearing mode T-e model to estimate the parameters and an excellent agreement is achieved. The results imply that the observed tearing mode is classically stable but has non-negligible bootstrap current drive.
URI
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DOI
http://dx.doi.org/10.1088/0029-5515/54/8/083010
ISSN
0029-5515
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