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Lee, Woochang
UNIST Fusion Plasma Laboratory
Research Interests
  • Development of advanced microwave imaging diagnostics for fusion plasma

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Quasi 3D ECE imaging system for study of MHD instabilities in KSTAR

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Title
Quasi 3D ECE imaging system for study of MHD instabilities in KSTAR
Author
Park, Hyeon KeoYun, GunsuLee, WoochangChoi, Minjun J.Lee, JisanKim, MoohwanLeem, J.Nam, YoonbumChoe, G. H.Park, HyeokWoo, D. S.Kim, K. W.Domier, Calvin W.Luhmann, Neville C.Ito, N.Mase, AtsushiLee, Sang G.
Issue Date
201411
Publisher
AMER INST PHYSICS
Citation
REVIEW OF SCIENTIFIC INSTRUMENTS, v.85, no.11, pp.1 - 3
Abstract
A second electron cyclotron emission imaging (ECEI) system has been installed on the KSTAR tokamak, toroidally separated by 1/16th of the torus from the first ECEI system. For the first time, the dynamical evolutions of MHD instabilities from the plasma core to the edge have been visualized in quasi-3D for a wide range of the KSTAR operation (B0 = 1.7∼3.5 T). This flexible diagnostic capability has been realized by substantial improvements in large-aperture quasi-optical microwave components including the development of broad-band polarization rotators for imaging of the fundamental ordinary ECE as well as the usual 2nd harmonic extraordinary ECE.
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DOI
http://dx.doi.org/10.1063/1.4890401
ISSN
0034-6748
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SNS_Journal Papers
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