[2D01-05] Subcritical Experiment Analysis

9:30 AM - 9:45 AM JST(12:30 AM - 12:45 AM UTC)

[2D01] Performance comparison among Feynman-α, Rossi-α and correlation function analyses for subcritical states of UTR-KINKI

*Kenichiro Suga¹, Shoichi Ikeda¹, Atsushi Sakon¹, Sin-ya Hohara¹, Kengo Hashimoto¹ (1. Kindai Univ.)

Keywords:

UTR-KINKI,subcritical,Feynman-α,Rossi-α,correlation function,prompt-neutron decay

For subcritical UTR-KINKI reactor driven by a neutron source inherent in a highly enriched uranium fuel, Feynman-α, Rossi-α and auto-correlation function analyses are carried out to compare the performance of these analyses. Feynman-α analysis results in prompt-neutron decay constant with a large statistical error dependent on pitch of gate width, while Rossi-α and auto-correlation function analyses give the decay constant with a much smaller error independent of pitch of lag and time interval.