Plasma and Fusion Research

Volume 10, 3402033 (2015)

Regular Articles

Measurement of Plasma Behavior with High Speed Cameras in TOKASTAR-2
Tatsuya SAKITO, Hideki ARIMOTO, Takaaki FUJITA, Tomohiro UEDA, Yuusuke SHIMOOKA, Hiromasa ITOU and Kenji MURAOKA
Department of Energy Engineering and Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
(Received 25 November 2014 / Accepted 22 February 2015 / Published 16 April 2015)

Abstract

The position and shape of plasma were evaluated in TOKASTAR-2 by high-speed cameras. In tokamak experiment, improvement of the plasma equilibrium control by adjusting the vertical field was observed in the tangential sightline. The plasma center was located at the equatorial plane (Z = 0 cm) and the plasma disappeared in contact with the inner legs of TF coils. In helical experiment, it was observed in the radial sightline that the plasma was stable below the equatorial plane when the EC resonance layer was located within the last closed magnetic surface.

Keywords

TOKASTAR, tokamak, stellarator, hybrid confinement, tokamak discharge, helical field applied, high-speed camera

DOI: 10.1585/pfr.10.3402033

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This paper may be cited as follows:

Tatsuya SAKITO, Hideki ARIMOTO, Takaaki FUJITA, Tomohiro UEDA, Yuusuke SHIMOOKA, Hiromasa ITOU and Kenji MURAOKA, Plasma Fusion Res. 10, 3402033 (2015).