| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2024-08-14 |
| タイトル |
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タイトル |
Multi-frequency, megawatt-power gyrotron to facilitate a wide range of operations at ITER |
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言語 |
ja |
| 言語 |
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言語 |
jpn |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
池田 亮介
新屋 貴浩
矢嶋 悟
中井 拓
大胡 武
常山 正幸
山崎 響
小林 貴之
梶原 健
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
High-power (1 MW), long-pulse operations up to 300 s were demonstrated by multi-frequency oscillations at 170 GHz, 137 GHz, and 104 GHz. A multi-frequency gyrotron based on the design of the ITER gyrotron has been developed and studied. By redesigning the built-in mode convertor and internal mirrors of the ITER gyrotron, the internal scattered power of the gyrotron was reduced while maintaining the same output beam size and beam direction for the three frequencies. In addition, the mirrors of a matching optics unit were designed to efficiently couple the RF beam at 170 GHz, 137 GHz, and 104 GHz oscillations to a waveguide 50 mm in diameter, the same size that will be used in ITER. An HE11 mode content of ?94% was achieved for the three frequencies. Output powers of 1 MW at 170 GHz and 137 GHz, and 0.9 MW at 104 GHz were demonstrated up to 300 s. These oscillation frequencies can facilitate in a wide range of toroidal magnetic field operations at ITER, including plasma start-up and electron heating and current drive. |
| 書誌情報 |
Nuclear Fusion
巻 63,
号 6,
p. 066028-1-066028-10,
発行日 2023-05
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| 出版者 |
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出版者 |
IOP Publishing |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
0029-5515 |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
DOI 10.1088/1741-4326/accdeb |
