DRAGON solutions to the 3D transport benchmark over a range in parameter space

DRAGON solutions to the “NEA suite of benchmarks for 3D transport methods and codes over a range in parameter space” are discussed in this paper. A description of the benchmark is first provided, followed by a detailed review of the different computational models used in the lattice code DRAGON. Two numerical methods were selected for generating the required quantities for the 729 configurations of this benchmark. First, SN calculations were performed using fully symmetric angular quadratures and high-order diamond differencing for spatial discretization. To compare SN results with those of another deterministic method, the method of characteristics (MoC) was also considered for this benchmark. Comparisons between reference solutions, SN and MoC results illustrate the advantages and drawbacks of each methods for this 3-D transport problem.