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New Features of L-H Transition in Limiter H-Modes of JIPP T-IIU
http://hdl.handle.net/10655/2622
http://hdl.handle.net/10655/26223c9dec59-2e9d-4788-a289-f4d59a878656
Item type | 研究報告書 / Research Paper(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2010-02-05 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | New Features of L-H Transition in Limiter H-Modes of JIPP T-IIU | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | L-H Transition | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Edge Localized Modes | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Preceding ELM | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | m=3/n=1 Magnetic Fluctuations | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Edge Radial Electric Field | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Poloidal Rotation | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Resistive Tearing Mode | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Detached Toroidal Current Density Profile | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_18ws | |||||
資源タイプ | research report | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
"Toi, K.
× "Toi, K.× Morita, S.× Kawahata, K.× Ida, K.× Watari, T.× Kumazawa, R.× Ando, A.× Oka, Y.× Ohkubo, K.× Hamada, Y.× Adati, K.× Akiyama, R.× Hidekuma, S.× Hirokura, S.× Kaneko, O.× Kawamoto, T.× Kawasumi, Y.× Kojima, M.× Kuroda, T.× Masai, K.× Narihara, K.× Ogawa, Y.× Okajima, S.× Sakamoto, M.× Sasao, M.× Sato, K.× Sato, K. N.× Seki, T.× Shimpo, F.× Tanahashi, S.× Taniguchi, Y.× Tsuzuki, T." |
|||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | "In limiter H-modes of JIPP T-IIU, a new type of L-H transition preceded by an ELM is observed. The preceding ELM ( pre-ELM ) appears just prior to the L-H transition. This type of transition is usually observed in H-modes of JIPP T-IIU. The L-H transition without the pre-ELM is triggered only in the case when a sufficiently large rapid current ramp down is emploied. In H-modes with constant q(a)~3.5-4.5, coherent magnetic oscillations with m=3 /n=1 destabilized during L-phase are further enhanced at the pre-ELM, and suppressed suddenly at the transition. This mode is situated in the region of the transport barrier. Propagation frequency of the m=3/n=1 mode, which may be affected by plasma mass rotation, rises appreciably ( by ~ 10 % ) during H-phase with frequent ELMs, but remains unchanged for at least 200 mu s after the transition. Behaviours of the m=3/n=1 and m=2/n=1 modes are well explained by quasi-linear resistive tearing mode analysis for modelled toroidal current density profiles slightly detached from the limiter. These experimental results suggest that the transition is controlled by the change of a magnetic field structure relating to the modification of a toroidal current density profile near the edge. The possibility for the development of edge radial electric field as a consequence of the transition is discussed." | |||||
書誌情報 |
en : Research Report NIFS-Series 発行日 1992-09-01 |
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報告書番号 | ||||||
NIFS-179 | ||||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0915-633X |