Computational Analysis of Experimental Results on Spatial Distributions of Fission Reaction Rates in the Annular Core of a Modular HTGR, Obtained at the ASTRA Critical Facility

The paper presents computational analysis of some experimental results on spatial distribution of 235 U fission reaction rates in a critical assembly with the annular core and different configurations of safety rods, placed into the inner reflector, made of graphite. Presented computational analysis of experimental data was performed with the set of codes used in HTGR design calculations.