Estimation of plasma elongation and position on noncircular tokamak triam-1m

Shin Ichi Moriyama, Kazuo Nakamura, Shoji Kawasaki, Eriko Jotaki, Akihiro Nagao, Yukio Nakamura, Naoji Hiraki, Satoshi Itoh

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A method of estimating the plasma elongation and position using the magnetic field picked up by magnetic coils is described. The method is based on the approximate solution for the Grad-Shafranov equation including the effect of the eddy current on the resistive shell. When this method was applied to noncircular plasmas on TRIAM-1M, the analytical results were found to be in good agreement with the plasma shape observed by a TV camera and with the outermost magnetic surface obtained through the calculation of an MHD equilibrium code. This approach is suitable for the real-time analysis and feedback control of plasma shape in a noncircular tokamak.

Original languageEnglish
Pages (from-to)1479-1485
Number of pages7
JournalJapanese Journal of Applied Physics
Issue number8R
Publication statusPublished - Aug 1 1989


All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Moriyama, S. I., Nakamura, K., Kawasaki, S., Jotaki, E., Nagao, A., Nakamura, Y., ... Itoh, S. (1989). Estimation of plasma elongation and position on noncircular tokamak triam-1m. Japanese Journal of Applied Physics, 28(8R), 1479-1485.