Presentation Information
[1C14]Subcriticality Estimation Using Autocovariance of Reactor Noise(1) Least Squares Fitting Using Delayed Neutron Components
*Tomohiro Endo1, Ryoga Hirota1, Akio Yamamoto1, Kenichi Watanabe2, Genichiro Wakabayashi3, Kengo Oda4, Junichi H. Kaneko4 (1. Nagoya Univ., 2. Kyushu Univ., 3. Kindai Univ., 4. Hokkaido Univ.)
Keywords:
subcriticality,reactor noise,autocovariance,delayed neutron,least squares fitting
A theoretical formula for the lag-1 autocovariance of zero-power reactor noise is derived by considering delayed neutron components. Using the least squares fitting to the measured variation of the lag-1 autocovariance with respect to the counting gate width, we investigate whether subcriticality in dollar units can be estimated without prior knowledge of point kinetics parameters.
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