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Recent Studies of Hydrogen Negative Ion Source and Beam Production for NBI in Large Helical Device
http://hdl.handle.net/10655/00012682
http://hdl.handle.net/10655/00012682051e6a10-a28c-40ca-afc6-a23ad4156329
名前 / ファイル | ライセンス | アクション |
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pfr2016_11-2505038 (3.0 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-11-29 | |||||
タイトル | ||||||
タイトル | Recent Studies of Hydrogen Negative Ion Source and Beam Production for NBI in Large Helical Device | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | NBI | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | negative ion source | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | extraction region | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | negative-ion rich plasma | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | particle flow | |||||
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 | |||||
その他(別言語等)のタイトル | ||||||
その他のタイトル | LHDにおけるNBI用水素負イオン源とビーム生成の最新の研究成果 | |||||
著者 |
IKEDA, Katsunori
× IKEDA, Katsunori× GENG, Shaofei× TSUMORI, Katsuyoshi× NAKANO, Haruhisa× KISAKI, Masashi× NAGAOKA, Kenichi× OSAKABE, Masaki× TAKEIRI, Yasuhiko |
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著者ID | ||||||
内容記述タイプ | Other | |||||
内容記述 | 0000-0002-0585-4561 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The state of hydrogen plasma in the extraction region in a hydrogen negative-ion (H−) source for NBI has been investigated. We clearly observe an improvement of H− density owing to the surface production effect with Cs seeding. H− ions are widely distributed in the extraction region which is obtained by movable cavity ring down (CRD). We confirm a negative ion rich plasma with a few electrons in the extraction region, which state is important for reduction of electron contamination in extracting beam. An extraction area is reached 30mm from the PG surface, which is measured by a 2D imaging diagnostic for Hα emission. We find the insensitive area for H− extraction at the PG surface between the apertures. Negative ions produced at the surface are considered to have been supplied in the extraction region. The flow velocity of H− ions is obtained by a four-pin Langmuir probe using a photodetachment technique with an Nd:YAG laser. H− ion flows from the plasma grid surface, and its direction drastically changes at 20mm from the production surface. This flow behavior is considered to be an important characteristic for improving H− density in the extraction region. |
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書誌情報 |
Plasma and Fusion Research 巻 11, 号 Special Issue1-ITC25, p. 2505038, 発行日 2016-04-22 |
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出版者 | ||||||
出版者 | The Japan Society of Plasma Science and Nuclear Fusion Research | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 18806821 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA12346675 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1585/pfr.11.2505038 | |||||
権利 | ||||||
権利情報 | (c) 2016 The Japan Society of Plasma Science and Nuclear Fusion Research | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1585/pfr.11.2505038 | |||||
関連名称 | Published 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 | |||||
NAIS | ||||||
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