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High-Energy Acceleration of an Intense Negative Ion Beam
http://hdl.handle.net/10655/3011
http://hdl.handle.net/10655/301147185ea7-4f97-49d2-86ff-487a88a52c0c
Item type | 研究報告書 / Research Paper(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2010-02-05 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | High-Energy Acceleration of an Intense Negative Ion Beam | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | negative ion source | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | high-energy acceleration | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | negative-ion-based NBI external magnetic filter | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | cesium seeding | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | neutralization efficiency | |||||
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 | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
"Takeiri, Y.
× "Takeiri, Y.× Ando, A.× Kaneko, O.× Oka, Y.× Tsumori, K.× Akiyama, R.× Asano, E.× Kawamoto, T.× Tanaka, M.× Kuroda, T." |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | A high-current H^- ion beam has been accelerated with the two-stage acceleration. A large negative hydrogen ion source with an external magnetic filter produces more than 10 A of the H^- ions from the grid area of 25 cm x 50 cm with the arc efficiency of 0.1 A/kW by seeding a small amount of cesium. The H ion current increases according to the 3/2-power of the total beam energy. A 13.6 A of H^- ion beam has been accelerated to 125 keV at the operational gas pressure of 3.4 mTorr. The optimum beam acceleration is achieved with nearly the same electric fields in the first and the second acceleration gaps on condition that the ratio of the first acceleration to the extraction electric fields is adjusted for an aspect ratio of the extraction gap. The ratio of the acceleration drain current to the H^- ion current is more than 1.7. That is mainly due to the secondary electron generated by the incident H^- ions on the extraction grid and the electron suppression grid. The neutralization efficiency was measured and agrees with the theoretical calculation result. | |||||
書誌情報 |
en : Research Report NIFS-Series 発行日 1995-02-01 |
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報告書番号 | ||||||
NIFS-338 | ||||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0915-633X |