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

doi:10.1585/pfr.5.024

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 journal › Article

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 language	English
Article number	024
Journal	Plasma and Fusion Research
Volume	5
DOIs	https://doi.org/10.1585/pfr.5.024
Publication status	Published - Jan 1 2010
Externally published	Yes

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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 journal › Article

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 - Kurashina, Hiroki

AU - Ejiri, Akira

AU - Takase, Yuichi

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AU - Sakamoto, Takuya

AU - Watanabe, Osamu

AU - Nagashima, Yoshihiko

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AU - An, Byung Il

AU - Kobayashi, Hiroaki

AU - Hayashi, Hiroyuki

AU - Yamada, Kotaro

AU - Matsuzawa, Hazuki

AU - Kakuda, Hidetoshi

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AU - Wakatsuki, Takuma

AU - Oosako, Takuya

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Access to Document

10.1585/pfr.5.024