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Report No.

R&D to improve accuracy of nuclear prediction for HTGR, 2; Inverse kinetics analysis for HTTR simulated core in KUCA

Takahashi, Kazuki*; Nakajima, Kunihiro*; Sakon, Atsushi*; Hohara, Shinya*; Hashimoto, Kengo*; Fukaya, Yuji   ; Sano, Tadafumi*

A Mock-up core for HTTR was configured on the B rack of the Kyoto University Critical Assembly (KUCA), and control rod and center core drop experiments were conducted to obtain time-series data. As a result of performing inverse kinetics analysis on the acquired time-series data, position dependency of each detector was confirmed. Furthermore, in the case with large reactivity worth, such as C1 and the central core, significant differences were found between the analysis results of the integration method and the least squares inverse kinetics method.



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