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Validation of integrated thermal power measurement using solution fuel STACY experimental data for modified STACY performance test

STACY更新炉の性能試験のための溶液系STACYの実験データを用いた積算出力測定の妥当性検証

荒木 祥平   ; 郡司 智  ; 新垣 優; 村上 貴彦; 吉川 智輝 ; 長谷川 健太; 多田 裕太; 井澤 一彦 ; 須山 賢也

Araki, Shohei; Gunji, Satoshi; Arakaki, Yu; Murakami, Takahiko; Yoshikawa, Tomoki; Hasegawa, Kenta; Tada, Yuta; Izawa, Kazuhiko; Suyama, Kenya

STACY更新炉における熱出力校正試験に向けて、放射化箔を用いた積算出力の評価方法の妥当性を検証するため、溶液系STACYで測定された放射化実験データを用いて、積算出力を評価した。放射化法による評価結果と溶液系STACYにおいて出力評価に用いられていた核分裂生成物の測定による評価結果とを比較し両者がよく一致することを確認した。

To conduct integrated thermal power measurements for the performance test of the modified STACY, we re-analyzed the experimental data measured in the solution fuel STACY using the activation method. We validated its feasibility under the limited number of activation detectors. The re-analyzed results of the activation method by using MVP and PHITS with JENDL-4.0 indicated that the effect of the difference of the position between activation detectors was small enough, and the results agreed with that of the fission product analysis within almost 10%. It is conceivable that the activation method could be adopted instead of the fission product analysis.

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