NEUTRON NOISE SIMULATIONS IN A HETEROGENEOUS SYSTEM: A COMPARISON BETWEEN A DIFFUSION-BASED AND A DISCRETE ORDINATES SOLVER
Paper in proceedings, 2019

A comparative study on two neutron noise solvers is presented. The first solver is the simulator CORE SIM which is based on neutron diffusion theory, while the second one makes use of a discrete ordinates method. For the comparison, a two-dimensional, heterogeneous critical system with a localized perturbation, is considered. The perturbation is defined as a fluctuation of the macroscopic neutron capture cross-section in one point of the system. Differences can be found between the two solvers because of the heterogeneities of the system and the perturbation.

discrete ordinates

neutron noise

diffusion theory

Author

Antonios Mylonakis

Chalmers, Physics, Subatomic and Plasma Physics

Huaiqian Yi

Chalmers, Physics, Subatomic and Plasma Physics

Paolo Vinai

Chalmers, Physics, Subatomic and Plasma Physics

Christophe Demaziere

Chalmers, Physics, Subatomic and Plasma Physics

Proceedings of M&C 2019

439-448

The International Conference on Mathematics and Computational Methods applied to Nuclear Science and Engienering - M&C 2019
Portland, USA,

Core monitoring techniques and experimental validation and demonstration (CORTEX)

European Commission (Horizon 2020), 2017-09-01 -- 2021-08-31.

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Other Engineering and Technologies not elsewhere specified

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9/2/2019 1