[1B07-11] Uncertainty Evaluation

[1B11] Nuclear Data-induced Uncertainty Quantification of Prompt Neutron Decay Constant for Water-only System

*Tomohiro Endo¹, Akihiro Noguchi¹, Akio Yamamoto¹ (1. Nagoya Univ.)

Keywords:prompt neutron decay constant, first-order perturbation theory, sensitivity analysis, uncertainty quantification, light water

To quantify the nuclear data-induced uncertainty of prompt neutron decay constant α for a non-neutron multiplication system, we developed an inhouse calculation code using S_N method and power iteration. Based on the first-order perturbation theory, sensitivity analysis and uncertainty quantification of α with respect to nuclear data were carried out for pulsed neutron source experiments, which were conducted for water tank systems in the following study: https://doi.org/10.1080/18811248.1966.9732325