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Thirty-minute plasma sustainment by real-time magnetic-axis swing for effective divertor-load-dispersion in the Large Helical Device
http://hdl.handle.net/10655/3862
http://hdl.handle.net/10655/3862dd64678e-1a89-4b8e-abfc-5d916a6a7441
名前 / ファイル | ライセンス | アクション |
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Phys.Plasmas13_056118 (2.9 MB)
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Item type | 学術雑誌論文 / Journal Article_02(1) | |||||
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公開日 | 2010-05-28 | |||||
タイトル | ||||||
タイトル | Thirty-minute plasma sustainment by real-time magnetic-axis swing for effective divertor-load-dispersion in the Large Helical Device | |||||
言語 | ||||||
言語 | eng | |||||
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 |
Mutoh, T.
× Mutoh, T.× Masuzaki, S.× Kumazawa, R.× Seki, T.× Saito, K.× Nakamura, Y.× Kubo, S.× Takeiri, Y.× Shimozuma, T.× Yoshimura, Y.× Igami, H.× Ohkubo, K.× Watanabe, T.× Ogawa, H.× Miyazawa, J.× Shoji, M.× Ashikawa, N.× Nishimura, K.× Sakamoto, M.× Osakabe, M.× Tsumori, K.× Ikeda, K.× Chikaraishi, H.× Funaba, H.× Morita, S.× Goto, M.× Tokuzawa, T.× Takeuchi, N.× Shimpo, F.× Nomura, G.× Takahashi, C.× Yokota, M.× Zhao, Y.P.× Kwak, J.G.× Yamada, H.× Kawahata, K.× Ohyabu, N.× Kaneko, O.× Ida, K.× Nagayama, Y.× Noda, N.× Komori, A.× Sudo, S.× Motojima, O.× LHD, Experiment Group |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Achieving steady-state plasma operation at high plasma temperatures is one of the important goals of worldwide magnetic fusion research. A high temperature of approximately 2 keV, and steady-state plasma-sustainment operation of the Large Helical Device (LHD) [O. Motojima, K. Akaishi, H. Chikaraishi et al., Nucl. Fusion 40, 599 (2000)] is reported. High-temperature plasmas were created and maintained for more than 30 min with a world record injected heating power of 1.3 GJ. The three-dimensional heat-deposition profile of the LHD helical divertor was modified and during long-pulse discharges it effectively dispersed the heat load using a magnetic-axis swing technique developed at the LHD. A sweep of only 3 cm of the major radius of the magnetic axis position (less than 1% of the major radius of the LHD) was enough to disperse the divertor heat load. The modification of the heat-load profile was explained well by field-line tracing. The steady-state plasma was heated and sustained mainly by hydrogen minority ion heating using ion cyclotron range of frequencies. The operation lasted until a sudden increase of radiation loss occurred, presumably because of wall metal flakes dropping into the plasma. The sustained line-averaged electron density was approximately 0.7?0.8×10^19 m^?3. The average input power was 680 kW, and the plasma duration was 31 min 45 s. This successful long operation shows that the heliotron configuration has a high potential as a steady-state fusion reactor. | |||||
書誌情報 |
en : Physics of Plasmas 巻 Vol.13, 号 Issue 5, p. pp.056118-1 - 056118-8, 発行日 2006-05-01 |
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出版者 | ||||||
出版者 | American Institute of Physics | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1063/1.2177204 | |||||
権利 | ||||||
権利情報 | (c) 2006 American Institute of Physics. | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1063/1.2177204 | |||||
関連名称 | Publisher version | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |