Neutron Reflector Analysis for the Beam-Port of the Missouri S&T Reactor
A preliminary neutron reflector material selection and feasibility study of an inexpensive reflector replacement for the neutron beam-port at the 200 kW Missouri University of Science and Technology Research Reactor (MSTR) was conducted using Monte-Carlo techniques. The Monte-Carlo N-Particle transport code (MCNP6.1) was used to model the neutron beam-port of the Missouri S&T Reactor in order to study the effects of adding different reflector materials, in terms of the neutron flux reaching the radiography/tomography facility in front of MSTR's neutron beam-port. Aluminum, beryllium, titanium, nickel, nickel-58, lead, bismuth, tungsten and stainless steel reflectors were modeled to find the best neutron reflector for the beam-port. After examining reflector materials, it was concluded that none of them were an improvement over the current design. Experimental thermal flux was measured to be 1.0 x 107 ± 3.16 x 103 cm-2 s-1 at the exit of beam port for current version of beam-port. The current ratio of beam port inlet and outlet obtained from simulations was found to be 3.37 x 104. The flux of beam port inlet was determined on the order of 1.0 x 1011 cm-2 s-1 which is consistent with previous findings.
T. Akyurek et al., "Neutron Reflector Analysis for the Beam-Port of the Missouri S&T Reactor," Journal of Radioanalytical and Nuclear Chemistry, vol. 322, no. 2, pp. 975-981, Springer Netherlands, Nov 2019.
The definitive version is available at https://doi.org/10.1007/s10967-019-06752-x
Mining and Nuclear Engineering
Keywords and Phrases
Inexpensive Neutron Reflector; Monte Carlo N-Particle (MCNP); Neutron Beam-Port
International Standard Serial Number (ISSN)
Article - Journal
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01 Nov 2019