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- Material Type
- 規格・テクニカルリポート類
- Author/Editor
- 薄井 勝富能登 勝也河合 視己人大賀 徳道池田 佳隆
- Publication Date
- 2007-03
- Publication Date (W3CDTF)
- 2007
- Alternative Title
- Study on modification of power supply system for long pulse operation on JT-60 positive ion-based NBI
- Periodical title
- JAEA-Technology 2007-024
- Target Audience
- 一般
- Note (General)
- 出版タイプ： NAJT-60の超伝導化装置であるJT-60SAでは、正イオンNBI装置(以下、P-NBI装置)のビームパルス幅を現行の30秒から100秒に延ばすことが要求されている。P-NBI装置は12ユニットからなり、1ユニットあたりの中性粒子ビーム入射パワーは2.0MW、ビームエネルギーは85keVである。長パルス化においては、既存の短パルス用電源設備を最小限の改造で100秒の長パルス運転を可能とすることが求められている。今回、P-NBI装置の電源設備の100秒化に向けて、保護協調の観点及び主要機器の熱設計を中心に改造箇所の摘出を行った。検討では、2003年に実施した30秒化改造とその後の運転実績をもとに実施した。その結果、加速電源の水冷抵抗器等の一部の容量強化や冷却能力強化により、2MW/ユニット,100秒入射に対応が可能なことが明らかとなった。本報告書は、100秒化に向けての予備検討結果をまとめたものである。The JT-60 positive ion-based NBI (P-NBI) system is required to extend the pulse duration from 30 s to 100 s for JT-60SA, which is the modification of JT-60U to a fully superconducting coil tokamak. The JT-60SA NBI system will have 12 P-NBI units, each of which will inject 2 MW at 85 keV. The present power supply system is to be upgraded to operate for 100 s with minimum modification. The modification of the power supply has been studied in view of the protective characteristic and the thermal capacities of main power supply components. The design study is based on the results of the first modification of 30 s operation which was done in 2003. It has been confirmed that the long pulse operation of 100 s is possible by with partial modification of the power supply components such as enhancement of the water-cooled resistance of the acceleration power supply.
- Source
- /JAEA-Technology-2007-024.pdf （fulltext）