TY - JOUR
T1 - Experimental study of edge plasma structure in various discharges on compact helical system
AU - Morisaki, T.
AU - Komori, A.
AU - Akiyama, R.
AU - Idei, H.
AU - Iguchi, H.
AU - Inoue, N.
AU - Kawai, Y.
AU - Kubo, S.
AU - Masuzaki, S.
AU - Matsuoka, K.
AU - Minami, T.
AU - Morita, S.
AU - Noda, N.
AU - Ohyabu, N.
AU - Okamura, S.
AU - Osakabe, M.
AU - Suzuki, H.
AU - Tanaka, K.
AU - Takahashi, C.
AU - Yamada, H.
AU - Yamada, I.
AU - Motojima, O.
N1 - Funding Information:
The authors would like to thank Dr. J. Lyon and Dr. C. Klepper for many useful discussions, and all members of the CHS group for the experimental support. This research is partially supported by the Grant-in-Aid for Scientific Research from the Ministry of Education, Science and Culture.
PY - 1997/2/11
Y1 - 1997/2/11
N2 - 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.
AB - 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.
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U2 - 10.1016/s0022-3115(97)80177-8
DO - 10.1016/s0022-3115(97)80177-8
M3 - Article
AN - SCOPUS:85087250413
SN - 0022-3115
VL - 241-243
SP - 977
EP - 981
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
ER -