Thermal moderator-reflector assembly for HBS

The thermal moderator is the key component in a research neutron source to convert the primary neutrons which typically have energies in the MeV regime into useful neutrons for investigations with energies well below 1 eV. In the case of a HiCANS as HBS, the thermal moderator has to be optimized acc...

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Bibliographic Details
Published in:EPJ Web of conferences 2024, Vol.298, p.5008
Main Authors: Rücker, Ulrich, Pechenizkiy, Ivan, Li, Jingjing, Vezhlev, Egor, Zakalek, Paul, Voigt, Jörg, Gutberlet, Thomas, Brückel, Thomas
Format: Article
Language:English
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Summary:The thermal moderator is the key component in a research neutron source to convert the primary neutrons which typically have energies in the MeV regime into useful neutrons for investigations with energies well below 1 eV. In the case of a HiCANS as HBS, the thermal moderator has to be optimized according to the compact target size and to the proton pulse lengths at individual target stations. Here, the details of a thermal moderator design serving up to 12 instruments at a target station and its neutronic performance are presented. The thermal moderator consists of a complex aluminium vessel filled with light water as moderator material containing 12 thin-walled extraction channels arranged in 2 levels.
ISSN:2100-014X
2100-014X
DOI:10.1051/epjconf/202429805008