Thomson scattering measurements in low-density plasmas in the TST-2 spherical tokamak

H. Togashi, A. Ejiri, H. Homma, T. Shinya, Y. Takase, K. Toida, N. Tsujii, T. Yamaguchi, Y. Yoshida, H. Furui, M. Sonehara, K. Nakamura, W. Takahashi, T. Takeuchi, S. Yajima, H. Yamazaki, M. Hasegawa, Y. Nagashima, H. Tojo

研究成果: ジャーナルへの寄稿学術誌査読

7 被引用数 (Scopus)


Thomson scattering (TS) diagnostics have been widely used in fusion studies to measure profiles of electron temperature Te and electron density ne. In order to measure the low-density plasmas (ne ≤ 1018 m-3) in TST-2, which is sustained by lower hybrid wave power, the signal-to-noise ratio in TS measurement has been improved by various means. For instance, optimization of the detecting system, accumulation of TS data obtained from reproducible discharges, and application of a coaxial multi-pass scheme were carried out. As a result, the profiles have been measured successfully and a peaked ne profile and a hollow Te profile were obtained. Additionally, isotropy of Te near the plasma center was confirmed by coaxial double-pass TS measurement.

ジャーナルJournal of Instrumentation
出版ステータス出版済み - 12月 18 2015

!!!All Science Journal Classification (ASJC) codes

  • 器械工学
  • 数理物理学


「Thomson scattering measurements in low-density plasmas in the TST-2 spherical tokamak」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。