Experimental study of edge plasma structure in various discharges on compact helical system

T. Morisaki, A. Komori, R. Akiyama, H. Idei, H. Iguchi, N. Inoue, Y. Kawai, S. Kubo, S. Masuzaki, K. Matsuoka, T. Minami, S. Morita, N. Noda, N. Ohyabu, S. Okamura, M. Osakabe, H. Suzuki, K. Tanaka, C. Takahashi, H. YamadaI. Yamada, O. Motojima

Research output: Contribution to journalArticle

Abstract

Precise measurements of edge density profiles in various discharges have been performed successfully in the compact helical system (CHS) with a thermal neutral lithium beam probe. During high beta discharges, an outward shift of the plasma edge boundary was observed with an increase in the beta value, which was found to agree qualitatively with theoretical calculations. Experiments with different magnetic field configurations, i.e., with limiter, divertor and with an m/n = 1/1 island, were also performed. Clear difference in the edge density profiles among the configurations and a large change of plasma parameters in the configuration with the m/n = 1/1 island were observed.

Original languageEnglish
Pages (from-to)977-981
Number of pages5
JournalJournal of Nuclear Materials
Volume241-243
DOIs
Publication statusPublished - Feb 11 1997

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

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    Morisaki, T., Komori, A., Akiyama, R., Idei, H., Iguchi, H., Inoue, N., Kawai, Y., Kubo, S., Masuzaki, S., Matsuoka, K., Minami, T., Morita, S., Noda, N., Ohyabu, N., Okamura, S., Osakabe, M., Suzuki, H., Tanaka, K., Takahashi, C., ... Motojima, O. (1997). Experimental study of edge plasma structure in various discharges on compact helical system. Journal of Nuclear Materials, 241-243, 977-981. https://doi.org/10.1016/s0022-3115(97)80177-8