Modification of STACY for the study of criticality characteristics of fuel debris, 12; Preliminary analysis for thermal power measurement

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

The activation method was investigated to measure the thermal power in the new STACY. The neutron flux and spectra in the core are calculated with the MVP code. The reaction rate of the activation detector in the neutron field was estimated by using the PHITS code. From these results, the relationship between the thermal power and the reaction rate was estimated.

Language	:	Japanese
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Meeting title	:	日本原子力学会2023年秋の大会
Held date	:	2023/09
Location (city)	:	名古屋
Location (country)	:	日本
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Keywords	:	Fukushima Daiichi Nuclear Power Station Accident; 福島第一原子力発電所事故; 福島第一原子力発電所; STACY更新炉; 臨界実験; 燃料デブリ
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Cooperating Institute	:	原子力規制庁

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Registration No. : BB20230410
JAEA Abstracts No. :
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