[2J01-05] Subcritical Experiment and Analysis

[2J02] Reactivity estimation of KUCA subcritical cores

(2) Estimation based on power profile in quasi-steady state

*Yuichi Yamane¹, Shohei Araki¹, Yasunori Kitamura², Tsuyoshi Misawa² (1. Japan Atomic Energy Agency, 2. Institute for Integrated Radiation and Nuclear Science, Kyoto University)

Keywords:subcritical, reactivity estaimation, quasi-steady state, power profile, KUCA

A new reactivity estimation method has been developed based on the power profile in quasi-steady state. Several subcritical cores were set up in KUCA A-core and neutron count rate was measured to apply estimation methods for comparison. The values obtained by new method in an almost-critical core show several ten percent differences from calculated ones.