[2M13-15] Critical Assembly Modification

[2M13] Modification of STACY for the study of criticality characteristics of fuel debris

(12) Preliminary analysis for thermal power measurement

*Shouhei Araki¹, Satoshi Gunji¹, Kenta Hasegawa¹, Yuta Tada¹, Tomoki Yoshikawa¹, Kazuhiko Izawa¹, Kenya Suyama¹ (1. Japan Atomic Energy Agency)

Keywords:modified STACY, Critical Experiment, Power Measurement, Neutron measurement, Activation method

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.