| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2026-02-12 |
| タイトル |
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タイトル |
Improvement of the Quench Detection System for the PF Coils of 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 |
Sonoda Shogo
Murakami Haruyuki
Usui Katsutomi
Hatakeyama Shoichi
Hamada Kazuya
Sam Davis
Manfred Wanner
Valerio Tomarchio
Louis Zani
Guy Phillips
Luca Novello
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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 |
The JT-60SA superconducting coil system comprises 6 Equilibrium Field coils, 4 Central Solenoid modules, and 18 Toroidal Field coils. Detecting a quench correctly in superconducting coils is essential to avoid damage of the coil. During the last integrated commissioning test, spike-shaped voltage fluctuations were observed on the EF and CS quench detection (QD) voltages. The voltage fluctuations occurred when the currents in the EF and CS coils rapidly changed. Following a circuit analysis of the EF coils, it was found that the spike voltage originated at the input of the QD differential amplifier from a slight mismatch of the time constants of the resistance-capacitance (RC) noise filter circuit. The RC filter circuit had to be adjusted precisely to achieve the same time constant between the winding and the pickup coil. The reduction of spike noise was experimentally confirmed by adjusting the variable capacitor or resistor in the filter circuit. |
| 書誌情報 |
IEEE Transactions on Applied Superconductivity
巻 36,
号 5,
p. 1-4,
発行日 2026-08
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| 出版者 |
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出版者 |
The IEEE Council on Superconductivity |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.1109/TASC.2026.3659108 |
