Peakman, Aiden 
ORCID: 0000-0002-1109-4781, Owen, Hywel and Abram, Tim
(2021)
Validation of the Monte Carlo code MONK for thermal Th-232/U-233 systems using the JEF-2.2 and JEFF-3.1 libraries.
ANNALS OF NUCLEAR ENERGY, 152.
p. 107919.
Abstract
There is limited validation of MONK using 232Th/233U benchmarks, and existing validation of Monte Carlo codes has generally used older nuclear data libraries. Here we use MONK-9A to systematically study a series of thermal 232Th/233U-based benchmark experiments, taken from the International Criticality Safety Benchmark Evaluation Project handbook and using JEF-2.2 and JEFF-3.1 libraries. We find that 232Th-dominated thermal systems (those moderated with graphite or light water) with limited 233U content show little difference when modelled with JEF-2.2 or JEFF-3.1. However, when there is significant 233U then JEFF-3.1 is found to give considerably better agreement with experiment. There is likely to be little benefit in utilising JEFF-3.1 instead of JEF-2.2 when modelling systems for which the predominant nuclides are 232Th, 235U and 238U. However, for systems containing large fractions of 233U – such as light water breeder reactors operating on a 232Th-233U cycle – it is recommended that JEFF-3.1 is utilised.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Thorium, U-233, MONK, Validation, Nuclear data |
| Divisions: | Faculty of Science and Engineering > School of Engineering |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 18 Aug 2021 10:15 |
| Last Modified: | 18 Jan 2023 21:33 |
| DOI: | 10.1016/j.anucene.2020.107919 |
| Open Access URL: | https://doi.org/10.1016/j.anucene.2020.107919 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3133904 |
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