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Author(s):
H. Funaba, K.Y. Watanabe, S. Sakakibara, S. Murakami, I. Yamada, K. Narihara, K. Tanaka, T. Tokuzawa, M. Osakabe, Y. Narushima, S. Ohdachi, Y. Suzuki, M. Yokoyama, Y. Takeiri, H. Yamada, K. Kawahata, and LHD Experiment Group
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Title:
Local Transport Property of Reactor-Relevant High-Beta Plasmas on LHD
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Date of publication:
Nov. 2010
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Key words:
22 IAEA Fusion Energy Conference, EXC/P8-05
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Abstract:
The high-beta plasmas up to 5% of the volume-averaged beta are obtained on the Large Helical Device (LHD) in the magnetic configuration with the aspect ratio, A-p = 6.6. The property of such highbeta plasmas are evaluated by the local transport analysis with referring the property of the International Stellarator Scaling 2004 (ISS04) and comparing the plasmas with the standard A-p = 5.8. The effects of the changes of the magnetic configuration by the increment in beta is considered in this evaluation. The dependence of the local transport in the peripheral region is correlated more with beta itself than the magnetic configuration effect in both A-p cases, whereas the core transport appears to be correlated more with the configuration effect. The transport degradation at the high-beta region becomes small in the A-p = 6.6 configuration.
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