Title: The neutronics scheme adopted for the HELIOS irradiation experiment in the High Flux Reactor Petten
Citation: ANNALS OF NUCLEAR ENERGY vol. 101 p. 312-321
Publication Year: 2017
JRC N°: JRC101731
ISSN: 0306-4549
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC101731
DOI: 10.1016/j.anucene.2016.11.017
Type: Articles in periodicals and books
Abstract: A dedicated neutronics computational scheme is a crucial tool in the preparation and the post-analysis of an irradiation experiment, as it defines the key parameters of the experiment. The complex and very dynamic environment of a Materials Testing Reactor (MTR) core, on the other hand, represents a challenging object for neutronics calculations. Within the framework of the HELIOS experiment conducted at the High Flux Reactor (HFR) in Petten (The Netherlands) in 2009 under the European Project EUROTRANS, a new neutronics scheme has been developed with the objective of finding the optimum balance between accuracy and calculation performance. This scheme is based on the Monte-Carlo technique and employs a two-level approach by separating the problem into overlapping spatial and temporal domains. The underlying physical phenomena are presented, together with elements of validation which gives a further insight into the effects governing the neutron fluxes in the core.
JRC Directorate:Nuclear Safety and Security

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