検索対象:     
報告書番号:
※ 半角英数字
 年 ~  年

Pulse neutron experiment for accelerator-driven system, 2

加速器駆動炉のためのパルス中性子実験,2

西原 健司; 菅原 隆徳; 辻本 和文; 北村 康則; Pyeon, C. H.*

Nishihara, Kenji; Sugawara, Takanori; Tsujimoto, Kazufumi; Kitamura, Yasunori; Pyeon, C. H.*

パルス中性子源(PNS)実験に対する回帰分析法が、加速器駆動炉の未臨界度監視のために開発されてきた。この分析法は、高繰り返しなど条件が悪く、$$alpha$$フィッティング法で遅発成分を決定することが困難な実験条件に対しても適用可能である。本研究では、KUCA-A炉心で幾つかの未臨界度と幾つかのDT中性子源周期を組合せた実験を行い、回帰分析法を検証した。その結果、低繰り返しにおいて、$$k$$$$_{eff}$$と計数率について、実験値と解析値の差がみられた。今後バックグラウンドの影響評価が必要である。

The regression method for pulse neutron source (PNS) experiment has been developed to monitor sub-criticality of an accelerator-driven system (ADS). This method is applicable for PNS experiment with bad experimental conditions, such as high repetition of neutron source that makes the alpha-fitting method difficult to determine delayed neutron level. In the present study, the regression method was verified using the KUCA-A core with various sub-critical levels induced by DT neutrons with several numbers of repetitions. As a result, the discrepancy of $$k$$$$_{eff}$$ and count rates between experiment and the regression method was observed for the low repetitions. Further investigation for background is necessary in next study.

Access

:

- Accesses

InCites™

:

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.