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박현거

Park, Hyeon Keo
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Toroidal mode number estimation of the edge-localized modes using the KSTAR 3-D electron cyclotron emission imaging system

Author(s)
Lee, J.Yun, G.S.Lee, J.E.Kim, M.Choi, M.J.Lee, W.Park, Hyeon KeoDomier, C.W.Luhmann, N.C.Sabbagh, S.A.Park, Y.S.Lee, S.G.Bak, J.G.
Issued Date
2014-06
DOI
10.1063/1.4883180
URI
https://scholarworks.unist.ac.kr/handle/201301/5169
Fulltext
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84902842607
Citation
REVIEW OF SCIENTIFIC INSTRUMENTS, v.85, no.6, pp.063505
Abstract
A new and more accurate technique is presented for determining the toroidal mode number n of edge-localized modes (ELMs) using two independent electron cyclotron emission imaging (ECEI) systems in the Korea Superconducting Tokamak Advanced Research (KSTAR) device. The technique involves the measurement of the poloidal spacing between adjacent ELM filaments, and of the pitch angle α O of filaments at the plasma outboard midplane. Equilibrium reconstruction verifies that α O is nearly constant and thus well-defined at the midplane edge. Estimates of n obtained using two ECEI systems agree well with n measured by the conventional technique employing an array of Mirnov coils.
Publisher
AMER INST PHYSICS
ISSN
0034-6748

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