Study of SOL/divertor plasmas in JFT-2M

H. Kawashima, S. Sengoku, K. Uehara, H. Tamai, T. Shoji, H. Ogawa, T. Shibata, M. Yamamoto, Y. Miura, Y. Kusama, H. Kimura, H. Amemiya, Y. Sadamoto, Yoshihiko Nagashima

研究成果: Contribution to journalArticle査読

2 被引用数 (Scopus)

抄録

Experimental efforts on JFT-2M have been devoted to understanding the scrape-off-layer (SOL)/divertor plasmas and to investigating power and particle control by boundary plasma modification. Starting in 1985, an open divertor configuration was adopted for the first decade of the JFT-2M experiments. The characteristics of SOL/divertor plasmas such as in/out asymmetry for divertor plasmas, heat and particle diffusivities, and SOL current during an edge-localized-mode event were identified. The power and particle flux was successfully handled by active control methods such as local pumping, boundary plasma ergodization, divertor biasing, electron cyclotron wave edge heating, and fueling optimization. In 1995, to improve the power and particle control capability of the divertor, the JFT-2M divertor was modified to have a closed configuration, which demonstrated the baffling effects with its narrower divertor throat. A dense and cold divertor state (nediv = 4 × 1019 m-3 and Tediv = 4 eV), compatible with improved confinement modes (e.g., H-mode), was realized with strong gas puffing in a closed configuration. Edge plasma fluctuations related to the H-mode physics were identified by an electrostatic probe and magnetic measurements. These are reviewed in this paper.

本文言語英語
ページ(範囲)168-186
ページ数19
ジャーナルFusion Science and Technology
49
2
DOI
出版ステータス出版済み - 1 1 2006

All Science Journal Classification (ASJC) codes

  • 土木構造工学
  • 核物理学および高エネルギー物理学
  • 原子力エネルギーおよび原子力工学
  • 材料科学(全般)
  • 機械工学

フィンガープリント

「Study of SOL/divertor plasmas in JFT-2M」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル