Abstract
Neutron detector response to power reactor mechanical structure vibrations is computed in order to obtain a quantitative reference for noise analysis. For a space-dependent approach in large cores, Cohn's method of reducing time-dependent neutron balance equations to statics equations was considered. In order to produce detector response matrices, depending on many vibrating sources 1 1 For simplicity, instead of ‘local noise source’, the expression ‘vibrating source’ will be used. and frequencies, a dedicated 3-D code was developed. Simulations indicated that response matrices could be used to locate vibrating sources for low local to global noise ratios and to obtain their vibration amplitudes.
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