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Exploring deuterium beam operation and the behavior of the co-extracted electron current in a negative-ion-based neutral beam injector
http://hdl.handle.net/10655/00012575
http://hdl.handle.net/10655/00012575f7480b00-ce82-4798-92d5-8bc667f0b56b
名前 / ファイル | ライセンス | アクション |
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Nucl.Fusion59(7)_pp76009 (1.4 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-07-13 | |||||
タイトル | ||||||
タイトル | Exploring deuterium beam operation and the behavior of the co-extracted electron current in a negative-ion-based neutral beam injector | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | negative-ion | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | co-extracted electron | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | NBI | |||||
キーワード | ||||||
主題Scheme | Other | |||||
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 |
IKEDA, Katsunori
× IKEDA, Katsunori× TSUMORI, Katsuyoshi× NAKANO, Haruhisa× KISAKI, Masashi× NAGAOKA, Kenichi× KAMIO, Shuji× Fujiwara, Yutaka× Haba, Yasuaki× OSAKABE, Masaki |
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著者ID | ||||||
内容記述タイプ | Other | |||||
内容記述 | 0000-0001-9781-231X | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The achievements of the deuterium beam operation of a negative-ion-based neutral beam injector (N-NBI) in the large helical device (LHD) are reported. In beam operation in LHD-NBIs, both hydrogen (H) and deuterium (D) neutral beams were generated by changing the operation gas using the same accelerator. The maximum accelerated deuterium negative-ion current () reaches 46.2 A from two beam sources with the averaged current density being 190 A m−2 for 2 s, and the extracted electron to accelerated ion current ratio () increases to 0.39 using 5.6 V high bias voltage in the first deuterium operation in 2017. An increase of electron density in the vicinity of the plasma grid (PG) surface, which is considered the main reason for the increase of co-extracted electrons in a beam, is confirmed by the half-size research negative-ion source in the neutral beam test stand at the National Institute for Fusion Science (NIFS). The deuterium negative-ion density is also larger than the hydrogen negative-ion density in the vicinity of the PG surface using the same discharge conditions. In the latest experimental campaign in 2018, increases to 55.4 A with the averaged current density being 233 A m−2 for 1.5 s using the shot extraction gap length. The low of 0.31 can be maintained by using high discharge power. The various parameters mentioned above are defined in detail below. | |||||
書誌情報 |
Nuclear Fusion 巻 59, 号 7, p. 076009, 発行日 2019-05-24 |
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出版者 | ||||||
出版者 | IOP Publishing | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 17414326 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA12472385 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1088/1741-4326/ab0fca | |||||
権利 | ||||||
権利情報 | This is the Accepted Manuscript version of an article accepted for publication in Nuclear Fusion. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.1088/1741-4326/ab0fca | |||||
情報源 | ||||||
関連名称 | Ikeda K, Tsumori K, Nakano H, Kisaki M, Nagaoka K, Kamio S, Fujiwara Y, Haba Y and Osakabe M 2019 Exploring deuterium beam operation and the behavior of the co-extracted electron current in a negative-ion-based neutral beam injector Nuclear Fusion 59 076009. | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1088/1741-4326/ab0fca | |||||
関連名称 | Publisher version | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
NAIS | ||||||
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