| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2024-07-18 |
| タイトル |
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タイトル |
Real-time processing system of a two-color CO2 laser interferometer for density feedback control in JT-60SA |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 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 |
Ohtani Yoshiaki
Sasao Hajime
Nakano Tomohide
Fukumoto Masakatsu
Wakatsuki Takuma
Inoue Shizuo
Kojima Shinichiro
Urano Hajime
Yoshida Maiko
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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 |
A real-time processing system for the two-color CO2 laser interferometer on the JT-60SA has been developed for density feedback control. The system has a novel feature that can detect fringe jumps due to off-normal events, such as loss detection due to displacement of the beam axis and changes in the laser wavelengths. Because a phase change due to the JT-60SA plasma is smaller than π/2 corresponding to the line-integral electron density NL of ? 6×10^19 m?2 in a short interval of 500 ns, the threshold of the fringe jump detection is decided to be π/2. Hence, off-normal events can be detected from a fringe jump, leading to the abort of the real-time feedback control. In the density feedback control of the JT-60SA plasma, the system is employed as a density monitor, with NL being successfully controlled at 16.8±6.6% lower than the reference. |
| 書誌情報 |
Review of Scientific Instruments
巻 95,
号 7,
発行日 2024-07
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| 出版者 |
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出版者 |
AIP Publishing |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.1063/5.0215877 |
