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Achievement of high power and long pulse negative ion beam acceleration for JT-60SA NBI
https://repo.qst.go.jp/records/78979
https://repo.qst.go.jp/records/7897997df79dc-ddc4-4c4d-8e10-af74def73888
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-02-14 | |||||
| タイトル | ||||||
| タイトル | Achievement of high power and long pulse negative ion beam acceleration for JT-60SA NBI | |||||
| 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 | |||||
| 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 |
Hiratsuka, Junichi
× Hiratsuka, Junichi× Kashiwagi, Mieko× Ichikawa, Masahiro× Umeda, Naotaka× mae quinones Saquilayan, Glynnis× Tobari, Hiroyuki× Watanabe, Kazuhiro× Kojima, Atsushi× Yoshida, Masafumi× Junichi, Hiratsuka× Mieko, Kashiwagi× Masahiro, Ichikawa× Naotaka, Umeda× mae quinones Saquilayan, Glynnis× Hiroyuki, Tobari× Kazuhiro, Watanabe× Atsushi, Kojima |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Long pulse acceleration of hydrogen negative ion beams with the power density over 70 MW/m2 and the pulse length over 100 s has been demonstrated for the first time by using a multi-aperture 3-stage accelerator. Such long pulse acceleration was achieved by integrating the design of beam optics and voltage holding capability to meet the requirements of JT-60SA. By using the newly designed accelerator for JT60SA, voltage holding at 500 kV with beam acceleration was stably sustained even after 5 g of cesium was seeded, and heat load on each acceleration grid was reduced below the allowable level for long pulse, less than 5% of total acceleration power. As a result, 500 keV, 154 A/m2 for 118 s beam acceleration was achieved, which satisfies the requirement of the negative ion source for JT-60SA. This pulse length of such high-power density beams is longest in the world. In addition, the result contributes to the long pulse acceleration of multi-stage electrostatic accelerators, such as 1 MeV negative ion accelerator for ITER. | |||||
| 書誌情報 |
Review of Scientific Instruments 巻 91, 号 023506, p. 1-6, 発行日 2020-02 |
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| 出版者 | ||||||
| 出版者 | AIP Publishing | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0034-6748 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1063/1.5131302 | |||||
| 関連サイト | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1063/1.5131302 | |||||
