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Engineering Prospects of Negative-Ion-Based Neutral Beam Injection System from High Power Operation for the Large Helical Device
http://hdl.handle.net/10655/3251
http://hdl.handle.net/10655/3251796ad522-f3b4-4b49-9d16-94c47a500c71
名前 / ファイル | ライセンス | アクション |
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NIFS-743.pdf (1.3 MB)
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Item type | 研究報告書 / Research Paper(1) | |||||
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公開日 | 2010-02-05 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Engineering Prospects of Negative-Ion-Based Neutral Beam Injection System from High Power Operation for the Large Helical Device | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | IAEA | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | fusion energy conference | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Lyon | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_18ws | |||||
資源タイプ | research report | |||||
著者 |
Kaneko, O.
× Kaneko, O.× Takeiri, Y.× Tsumori, K.× Oka, Y.× Osakabe, M.× Ikeda, K.× Nagaoka, K.× Kawamoto, T.× Asano, E.× Sato, M. |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | An overview on four-year operation of the negative-ion-based NB I (N-N B I) system for the Large Helical Device (LHD) is presented, and the prospects of negative-ion technology for applying it to future helical fusion reactors are discussed from theses experiences. The N-NBI system was designed and constructed based on the results of R&D at NIFS. Using three beam lines, the total port-through injection power of 9 MW for 2 s has been achieved. Each beam line attained the same performance: 3 .5 MW of the port-through power with the beam energy of 165 keV for hydrogen, which corresponds to the averaged negative ion current density of 25mA/cm^2 from ion sources. Also for long pulse injections, 110 s for 0.1 MW by one ion source, and 80 s for 0.5 MW by two ion sources (one beam line) were carried out. These facts show that the negative ion technology has been established to the same power level of conventional positive ion systems. Several technical improvements needed for getting these successful results are described, and the problems that limit the present performance are clarified. Some R&D programs to solve these problems are proposed for further improvement. | |||||
書誌情報 |
en : Research Report NIFS-Series 発行日 2002-10-01 |
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報告書番号 | ||||||
NIFS-743 | ||||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0915-633X |