Development of a heavy ion beam probe for measuring electrostatic potential profile and its fluctuation in LHD

Takeshi Ido, Akihiro Shimizu, Masaki Nishiura, Haruhisa Nakano, Shinji Kato, Shinsuke Ohshima, Yasuo Yoshimura, Shin Kubo, Takashi Shimozuma, Hiroe Igami, Hiromi Takahashi, Kazuo Toi, Fumitake Watanabe, Kazumichi Narihara, Ichihiro Yamada

研究成果: ジャーナルへの寄稿学術誌査読

10 被引用数 (Scopus)

抄録

A heavy ion beam probe (HIBP) using a 3-MV tandem accelerator has been installed on large helical device (LHD). Electrostatic potential in core plasma can be measured under the toroidal magnetic field strength of up to 3 T. By using the HIBP, the transition of potential profiles from electron-root to ion-root is observed in core plasmas during ramp-up of the electron density. Potential fluctuations are also measured electron cyclotron current drive (ECCD). Two kind of characteristic fluctuations are observed. One is a reversed-shear-induced Alfvén eigenmode (RSAE), whose frequency varies during the evolution of the rotational transform profile, and the other is with a constant geodeisc acoustic mode (GAM) frequency.

本文言語英語
ページ(範囲)460-464
ページ数5
ジャーナルPlasma Science and Technology
11
4
DOI
出版ステータス出版済み - 11月 17 2009
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 凝縮系物理学

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