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ECCD Experiment Using an Upgraded ECH System on LHD
http://hdl.handle.net/10655/8134
http://hdl.handle.net/10655/81342f968b85-6139-4132-b8e0-64726aebd468
名前 / ファイル | ライセンス | アクション |
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pfr2012_07-2402020.pdf (727.7 kB)
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Item type | 学術雑誌論文 / Journal Article_02(1) | |||||
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公開日 | 2012-06-25 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | ECCD Experiment Using an Upgraded ECH System on LHD | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | electron cyclotron current drive | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | ECCD | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | plasma current | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | gyrotron | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | LHD | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | TRAVIS | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Yoshimura, Yasuo
× Yoshimura, Yasuo× Kubo, Shin× Shimozuma, Takashi× Igami, Hiroe× Takahashi, Hiromi× NISHIURA, Masaki× OGASAWARA, Shinya× MAKINO, Ryohei× IDA, Katsumi× YOSHINUMA, Mikiro× SAKAKIBARA, Satoru× TANAKA, Kenji× NARIHARA, Kazumichi× MUTOH, Takashi× YAMADA, Hiroshi× NAGASAKI, Kazunobu× MARUSHCHENKO, Nikolai B.× TURKIN, Yuri |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Electron cyclotron current drive (ECCD) is an attractive tool for controlling plasmas. In the large helical device (LHD), ECCD experiments have been performed by using an EC-wave power source, gyrotron, with a frequency of 84 GHz. The maximum driven current was ?9 kA with 100 kW injection power to plasma and 8 s duration of EC-wave pulse. These years, high-power and long-pulse 77 GHz gyrotrons were newly installed. An ECCD experiment with 775 kW injection power was performed. The 77 GHz waves of 8 s pulse duration sustained the plasmas. The EC-wave beam direction was scanned toroidally, keeping the beam direction aiming at the magnetic axis in X-mode polarization. In spite of the change in the EC-wave beam direction, plasma parameters such as the line-average electron density, the central electron temperature and the plasma stored energy were kept nearly the same values for the discharges, ?0.3 × 1019 m?3, ?3 keV and ?30 kJ, except for the plasma current. The plasma current showed a systematic change with the change in the beam direction for ECCD, and at an optimum direction with N// ? ?0.3, the plasma current reached its maximum, ?40 kA. Also, current drive efficiency normalized with density and power was improved by 50% compared with that at the former 84 GHz ECCD experiment. | |||||
書誌情報 |
en : Plasma and Fusion Research 巻 Vol. 7, p. 2402020-1 - 2402020-4, 発行日 2012-03-01 |
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出版者 | ||||||
出版者 | プラズマ・核融合学会 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1585/pfr.7.2402020 | |||||
権利 | ||||||
権利情報 | ? 2012 The Japan Society of Plasma Science and Nuclear Fusion Research |