Work

Branchless Collisions for Reducing Spatial Correlations in Continuous Energy Monte Carlo Power Iteration

Year: 2024

Type: article

Abstract: \nBranchless collisions are customarily used in time-dependent Monte Carlo simulations and have been recently introduced in Monte Carlo power iteration. Previous works have shown that branchless collisions are very efficient in quenching spatial correlations in a multi-group framework, and a preliminary work was previously conducted in order to extend the use of branchless collisions to continuous energy. In that work, two variants of branchless collisions were introduced: branchless on the material, and branchless on the isotope. In this work, we analyse in depth the effect of using branchless collisions in realistic systems on spatial correlations, and we show that performing branchless collisions on the material consistently results in a smaller effect of spatial correlations than when using a standard branching collision algorithm.\n

Source: Springer Link (Chiba Institute of Technology)

DOI: 10.1051/epjconf/202430209005/pdf

Authors: T. Bonnet, H. Belanger

Institutions: University of Cambridge, Rensselaer Polytechnic Institute

Language: English

Topic: Nuclear reactor physics and engineering

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funder: Engineering and Physical Sciences Research Council

Awards: Mathematical Theory of Radiation Transport: Nuclear Technology Frontiers (MaThRad), G876242530