Electron density measurements of non-inductive start-up plasmas in the TST-2 spherical tokamak

Hiroki Kurashina, Akira Ejiri, Yuichi Takase, Kentaro Hanashima, Takuya Sakamoto, Osamu Watanabe, Yoshihiko Nagashima, Takashi Yamaguchi, Byung Il An, Hiroaki Kobayashi, Hiroyuki Hayashi, Kotaro Yamada, Hazuki Matsuzawa, Hidetoshi Kakuda, Junichi Hiratsuka, Takuma Wakatsuki, Takuya Oosako

Research output: Contribution to journalArticle

Abstract

A new 50 GHz microwave interferometer was installed, and non-inductively sustained spherical tokamak plasmas in the TST-2 device were measured. The line integrated electron densities (nels) on five chords were compared with visible CCD camera image and equilibrium analysis. It is concluded that the high-density region has a C-like shape along the outboard boundary. This shape suggests that the electron density is not constant on the magnetic flux surface.

Original languageEnglish
Article number024
JournalPlasma and Fusion Research
Volume5
DOIs
Publication statusPublished - Jan 1 2010

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microwave interferometers
image analysis
CCD cameras
magnetic flux

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Kurashina, H., Ejiri, A., Takase, Y., Hanashima, K., Sakamoto, T., Watanabe, O., ... Oosako, T. (2010). Electron density measurements of non-inductive start-up plasmas in the TST-2 spherical tokamak. Plasma and Fusion Research, 5, [024]. https://doi.org/10.1585/pfr.5.024

Electron density measurements of non-inductive start-up plasmas in the TST-2 spherical tokamak. / Kurashina, Hiroki; Ejiri, Akira; Takase, Yuichi; Hanashima, Kentaro; Sakamoto, Takuya; Watanabe, Osamu; Nagashima, Yoshihiko; Yamaguchi, Takashi; An, Byung Il; Kobayashi, Hiroaki; Hayashi, Hiroyuki; Yamada, Kotaro; Matsuzawa, Hazuki; Kakuda, Hidetoshi; Hiratsuka, Junichi; Wakatsuki, Takuma; Oosako, Takuya.

In: Plasma and Fusion Research, Vol. 5, 024, 01.01.2010.

Research output: Contribution to journalArticle

Kurashina, H, Ejiri, A, Takase, Y, Hanashima, K, Sakamoto, T, Watanabe, O, Nagashima, Y, Yamaguchi, T, An, BI, Kobayashi, H, Hayashi, H, Yamada, K, Matsuzawa, H, Kakuda, H, Hiratsuka, J, Wakatsuki, T & Oosako, T 2010, 'Electron density measurements of non-inductive start-up plasmas in the TST-2 spherical tokamak', Plasma and Fusion Research, vol. 5, 024. https://doi.org/10.1585/pfr.5.024
Kurashina, Hiroki ; Ejiri, Akira ; Takase, Yuichi ; Hanashima, Kentaro ; Sakamoto, Takuya ; Watanabe, Osamu ; Nagashima, Yoshihiko ; Yamaguchi, Takashi ; An, Byung Il ; Kobayashi, Hiroaki ; Hayashi, Hiroyuki ; Yamada, Kotaro ; Matsuzawa, Hazuki ; Kakuda, Hidetoshi ; Hiratsuka, Junichi ; Wakatsuki, Takuma ; Oosako, Takuya. / Electron density measurements of non-inductive start-up plasmas in the TST-2 spherical tokamak. In: Plasma and Fusion Research. 2010 ; Vol. 5.
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AU - Sakamoto, Takuya

AU - Watanabe, Osamu

AU - Nagashima, Yoshihiko

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AU - Oosako, Takuya

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