Item type |
学術雑誌論文 / Journal Article_02(1) |
公開日 |
2011-05-02 |
タイトル |
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言語 |
en |
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タイトル |
Magnetic Diagnostics of Magnetic Island in LHD |
言語 |
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言語 |
eng |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Large Helical Device |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
magnetic island |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
magnetic diagnostics |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
self-healing |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
著者 |
NARUSHIMA, Y.
WATANABE, K.Y.
SAKAKIBARA, S.
OHYABU, N.
YAMADA, H.
NARIHARA, K.
YAMADA, I.
MORISAKI, T.
INAGAKI, S.
NAGAYAMA, Y.
KOMORI, A.
LHD, exp. group
COOPER, W.A.
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抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Characteristics of magnetic islands are investigated by magnetic diagnostics in the Large Helical Device (LHD). The structure of the magnetic island with m/n = 1/1 (where, m and n are poloidal and toroidal mode number, respectively) can be estimated from the perturbed magnetic field appearing when a magnetic island changes. To measure the toroidal profile of the perturbed magnetic field δb1 originating from the plasma, a toroidal array of magnetic flux loops is set up in the LHD. The toroidal profile of δb1 is then spatially Fourier decomposed to determine the amplitude of the n = 1 component, δb1n=1 and its phase, φn=1 which correspond the change of the island width and the toroidal position of the X-point of the island, respectively. Therefore, the information about the magnetic island structure can be obtained from δb1n=1 and φn=1. In case the island width becomes larger than the seed island, measurements show that δb1n=1 is non-zero and φn=1 is temporally constant. A non-zero δb1n=1 can also be observed when the island width becomes smaller than the seed island. In this case, the angle φn=1 shifts by about π[rad] compared with the increasing case and the δb1n=1 is limited to a certain value which corresponding to the magnetic field suppressing the seed island. |
書誌情報 |
en : Plasma and Fusion Research
巻 Vol.2,
p. S1094-1 - S1094-5,
発行日 2007-01-01
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出版者 |
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出版者 |
プラズマ・核融合学会 |
DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.1585/pfr.2.S1094 |
権利 |
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権利情報 |
? 2007 The Japan Society of Plasma Science and Nuclear Fusion Research |