Preliminary Validation of the Shift Monte Carlo Code for Fixed-Source Radiation Transport Problems

Abstract

Simulations of neutron and photon transport using the Shift Monte Carlo radiation transport code are compared with experimental measurements and their corresponding benchmark simulations from several sets of experiments. Overall, Shift results match the calculations made by the benchmark teams quite well and match the measured values, which typically have large uncertainties, fairly well. A variety of attenuation/scattering problems are examined, as well as a streaming problem and a skyshine problem.

Keywords:

• Shift
• Monte Carlo
• shielding
• streaming
• skyshine

Acknowledgments

This work was supported by the U.S. NSA, Office of Defense Nuclear Nonproliferation R&D; the U.S. Nuclear Regulatory Commission, Office of Nuclear Regulatory Research; and the Nuclear Engineering Science Laboratory Synthesis (NESLS) program, sponsored by the U.S. Department of Energy (DOE) and administered by the Oak Ridge Institute for Science and Education.

This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC0500OR22725 with the DOE. The U.S. Government retains and the publisher, by accepting the article for publication, acknowledges that the U.S. Government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for U.S. Government purposes. The DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).