[2J01-05] Subcritical Experiment and Analysis

[2J04] Reactor Noise Analysis for a Subcritical Reactor System Driven by a Spallation Neutron Source in KUCA

(2) Analysis by Power Spectral Method

*Atsushi Sakon¹, Kunihiro Nakajima², Kazuki Takahashi², Sin-ya Hohara¹, Kengo Hashimoto¹, Masao Yamanaka³, Tadafumi Sano³, Cheolho Pyeon³ (1. Kindai University Atomic Energy Research Institute, 2. Graduate School of Science and Engineering, Kindai University, 3. Institute of Integrated Radiation and Nuclear Science, Kyoto University)

Keywords:Subcriticality, Accelerator Driven System, Spallation Neutron, Power Spectral density, Reactor Noise Analysis

The subcriticality analysis by power spectrum method was carried out the subcritical system driven by spallation neutron source in the KUCA. Prompt neutron decay constant was estimated by analysis of uncorrelated components even under unstable spallation neutron source.