Plasma and Fusion Research

Volume 6, 2402081 (2011)

Regular Articles


Transport Study of LHD High-Beta Plasmas Based on Power Balance Analysis with TASK3D Code Module
Ryosuke SEKI, Hisamichi FUNABA, Kiyomasa WATANABE, Satoshi OHDACHI, Yasuhiro SUZUKI, Satoru SAKAKIBARA, Masahiko SATO, Masayuki YOKOYAMA, Sadayoshi MURAKAMI1), Atsushi FUKUYAMA1) and Noriyoshi NAKAJIMA
National Institute for Fusion Science, Toki 509-5292, Japan
1)
Graduate School of Engineering Kyoto University, Kyoto 606-8501, Japan
(Received 22 December 2010 / Accepted 22 April 2011 / Published 12 July 2011)

Abstract

We customized TASK3D in order to add a new function, TR-snap, for evaluating transport coefficients on the basis of a power balance analysis. To check the validity of the TR-snap's results, the thermal transport coefficient evaluated by TR-snap was compared with results of PROCTR, which is used as the transport analysis code in the Large Helical Device (LHD). The thermal transport coefficient evaluated by TR-snap was almost the same as that of PROCTR. The effect of re-entering fast ions on the transport coefficients in a typical LHD high-beta plasma was investigated using customized TASK3D. When the effect of the re-entering fast ions on the neutral-beam injection heating efficiency is considered, the thermal transport coefficient is slightly larger than that without considering the re-entering fast ions. However, the tendency of the thermal transport coefficient with considering the re-entering fast ions is rarely different from the previously identified tendency.


Keywords

transport analysis code, power balance analysis, TASK3D, re-entering fast ion, high-beta plasma

DOI: 10.1585/pfr.6.2402081


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This paper may be cited as follows:

Ryosuke SEKI, Hisamichi FUNABA, Kiyomasa WATANABE, Satoshi OHDACHI, Yasuhiro SUZUKI, Satoru SAKAKIBARA, Masahiko SATO, Masayuki YOKOYAMA, Sadayoshi MURAKAMI, Atsushi FUKUYAMA and Noriyoshi NAKAJIMA, Plasma Fusion Res. 6, 2402081 (2011).