CONCORDED SET OF CRITICAL EXPERIMENTS FOR VERIFICATION OF U-235 NEUTRON DATA

Authors & Affiliations

Golovko Yu.E., Ivanova T.T., Nikolaev M.N., Rozhikhin E.I., Tsibulya A.M.
Russian Federation State Scientific Centre — A.I. Leipunsky Institute of Physics and Power Engineering, Obninsk, Russia

Abstract

The set of 62 critical experiments with homogeneous cores contained only highly enriched uranium, hydrogen and oxygen is selected on the basis of analysis of data presented in the International Criticality Safety Evaluated Benchmark Experiments. Substantional analysis of descriptions of experiments and statistical analysis of discrepancies between experimental and calculation data allow to construct covariation matrix of uncertainties of measured k-eff values. Internal consistency of selected experiments in the frames of evaluated uncertainties is demonstrated. The set of selected experiments is recommended for validation of uranium-235 neutron data.

Keywords
Internftional Handbook of Evaluated Criticality Safety Benchmark Experiments, homogeneous reactor core, covariance matrix of the errors, the multiplication factor, validation constants, Uranium-235

Article Text (in Russian, PDF)

References

UDC 621.039

Problems of Atomic Science and Technology. Series: Nuclear Constants", issue 1-2, 2007