| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2024-07-29 |
| タイトル |
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タイトル |
Optical design and stray RF investigation of ITER EC H&CD equatorial launcher using mockup |
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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 |
矢嶋 悟
梶原 健
池田 亮介
新屋 貴浩
小林 貴之
山崎 響
小林 則幸
中井 拓
高橋 幸司
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| 抄録 |
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内容記述タイプ |
Abstract |
|
内容記述 |
The aim of this study is to assess power transmission characteristics of ITER EC H&CD equatorial launcher (EL) which will deliver 20 MW of millimeter wave power to the ITER tokamak. A precise optical mockup of the launcher is fabricated in order to experimentally verify the characteristics of 170 GHz beam transmission. To observe the intensity distribution of output beams, a mobile high-sensitivity power detection system is used for millimeter wave monitoring, which is in good agreement with quasi-optical calculations. Internal stray RF generation presents an additional concern regarding heat load inside the launcher especially in case of deteriorated input mode purity. Therefore, firstly, the stray RF power is quantified by observation after the beam duct (i.e., launcher exit) of the mockup. The results show that a significant portion of stray RF (>20%) is emitted and does not contribute to the heat load. For another approach to estimate the heat load, geometric optics is performed with various degrees of scattering. This approach indicates that nearly half of the stray RF power is emitted from the launcher exit. Thus, the internal heat load due to stray RF is calculated 44 kW/m2, which is an important result in relaxing the design conditions of the EL. |
| 書誌情報 |
Fusion Engineering and design
巻 194,
p. 113690,
発行日 2023-09
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| 出版者 |
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出版者 |
Elsevier |
| 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 |
1873-7196 |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.1016/j.fusengdes.2023.113690 |
