Plasma and Fusion Research

Volume 13, 3402072 (2018)

Regular Articles

Estimation of Tokamak Plasma Position and Shape in TOKASTAR-2 Using Magnetic Field Measurement
Kouhei YASUDA, Hideki ARIMOTO, Atsushi OKAMOTO, Takaaki FUJITA, Masato MINOURA, Ryoma YOKOYAMA and Takahiro YAMAUCHI
Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
(Received 28 December 2017 / Accepted 7 May 2018 / Published 12 June 2018)

Abstract

The tokamak plasma position and shape were estimated for the first time in TOKASTAR-2 based on external magnetic measurement using filament current approximation method. Data of a magnetic probe array and flux loops was used. Effects of the helical field on the tokamak plasma radial position were investigated. The oscillation of the radial position and the outer displacement of the plasma under the weak vertical field were suppressed by the helical field.

Keywords

helical field application, TOKASTAR, magnetic measurement, plasma position and shape

DOI: 10.1585/pfr.13.3402072

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References

  • [1] K. Sakurai and S. Tanahashi, J. Phys. Soc. Jpn. 49, 759 (1980).
  • [2] H. Ikezi, K.F. Schwarzenegger and C. Ludescher, Phys. Fluids 22, 2009 (1979).
  • [3] K. Yamazaki and Y. Abe, Nagoya Research Report IPPJ-718 (1985).
  • [4] T. Oishi, K. Yamazaki, K. Okano et al., J. Plasma Fusion Res. SERIES 9, 69 (2010).
  • [5] T. Ueda, H. Arimoto, T. Fujita et al., J. Plasma Fusion Res. 10, 3402065 (2015).
  • [6] T. Sakito, H. Arimoto, T. Fujita et al., Plasma Fusion Res. 11, 2402074 (2016).
  • [7] D.W. Swain and G.H. Neilson, Nucl. Fusion 22, 1015 (1982).
  • [8] R. Nishimura, H. Arimoto, T. Fujita et al., Plasma Fusion Res. 9, 3402059 (2014).