Application of the MCNPX-McStas interface for shielding calculations and guide design at ESS

Research output: Contribution to journalConference article – Annual report year: 2014Researchpeer-review

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Recently, an interface between the Monte Carlo code MCNPX and the neutron ray-tracing code MCNPX was developed [1, 2]. Based on the expected neutronic performance and guide geometries relevant for the ESS, the combined MCNPX-McStas code is used to calculate dose rates along neutron beam guides. The generation and moderation of neutrons is simulated using a full scale MCNPX model of the ESS target monolith. Upon entering the neutron beam extraction region, the individual neutron states are handed to McStas via the MCNPX-McStas interface. McStas transports the neutrons through the beam guide, and by using newly developed event logging capability, the neutron state parameters corresponding to un-reflected neutrons are recorded at each scattering. This information is handed back to MCNPX where it serves as neutron source input for a second MCNPX simulation. This simulation enables calculation of dose rates in the vicinity of the guide. In addition the logging mechanism is employed to record the scatterings along the guides which is exploited to simulate the supermirror quality requirements (i.e. m-values) needed at different positions along the beam guide to transport neutrons in the same guide/source setup.
Original languageEnglish
Book seriesJournal of Physics: Conference Series (Online)
Volume528
Pages (from-to)012032
Number of pages5
ISSN1742-6596
DOIs
Publication statusPublished - 2014
EventInternational Workshop on Neutron Optics and Detectors - Commundo Tagungshotel, Ismaning, Germany
Duration: 2 Jul 20135 Jul 2013

Conference

ConferenceInternational Workshop on Neutron Optics and Detectors
LocationCommundo Tagungshotel
CountryGermany
CityIsmaning
Period02/07/201305/07/2013

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Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published under licence by IOP Publishing Ltd

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