https://doi.org/10.1051/epjconf/201714606020
Benchmarking of HEU mental annuli critical assemblies with internally reflected graphite cylinder
1 Institute of Nuclear Physics and Chemistry, CAEP, PO Box 919–210, Mianyang, Sichuan 621900, China
2 Idaho National Laboratory, PO Box 1625, MS 3855, Idaho Falls, Idaho 83415, USA
a e-mail: liu_express11@yahoo.com
Published online: 13 September 2017
Three experimental configurations of critical assemblies, performed in 1963 at the Oak Ridge Critical Experiment Facility, which are assembled using three different diameter HEU annuli (15-9 inches, 15-7 inches and 13-7 inches) metal annuli with internally reflected graphite cylinder are evaluated and benchmarked. The experimental uncertainties which are 0.00057, 0.00058 and 0.00057 respectively, and biases to the benchmark models which are − 0.00286, − 0.00242 and − 0.00168 respectively, were determined, and the experimental benchmark keff results were obtained for both detailed and simplified models. The calculation results for both detailed and simplified models using MCNP6-1.0 and ENDF/B-VII.1 agree well to the benchmark experimental results within difference less than 0.2%. The benchmarking results were accepted for the inclusion of ICSBEP Handbook.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
