[3L01-05] Experiment Analysis

[3L03] Correlation function analysis for gamma ray pulsed time sequence data in UTR-KINKI

*SHOICHI IKEDA¹, Tadafumi Sano¹, Atsushi Sakon¹, Kunihiro Nakajima¹, Takashi Kanda¹, Masaki Goto¹, Yasunori Matsuo¹, Hiroyuki Fukuda¹, Koji Matsui¹, Kengo Hashimoto¹ (1. KINDAI UNIVERSITY)

Keywords:Reactor noise analysis, correlation function, UTR-KINKI, prompt neutron decay constant, gamma ray

UTR-KINKI in critical and subcritical conditions, two BGO detector pairs were installed and time series count data were measured.Using these time series data, a reactor noise analysis performed using cross-correlation functions.A very large fission gamma-ray correlation component was observed in the lag τ = 0 data of this cross-correlation function.The prompt neutron decay constants obtained from the cross-correlation function method were consistent with the results obtained by the covariance to mean ratio method.