Shielding activated return water at the ESS

ESS utilises water both for moderating neutrons to thermal energies, as well as to cool beryllium- and steel reflectors, the shielding and plugs. This means that the water, in separate loops, will be subject to a significant proton and neutron irradiation causing the water to activate. After irradia...

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Published inJournal of physics. Conference series Vol. 1046; no. 1; pp. 12011 - 12015
Main Authors Klinkby, Esben, Muhrer, Günter, Carlsson, H., Eriksson, Björn
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.06.2018
Subjects
Beryllium
Dosage
Halls
Ion exchangers
Neutron irradiation
Neutrons
Physics
Plugs
Reflectors
Shielding
Water tanks
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Summary:ESS utilises water both for moderating neutrons to thermal energies, as well as to cool beryllium- and steel reflectors, the shielding and plugs. This means that the water, in separate loops, will be subject to a significant proton and neutron irradiation causing the water to activate. After irradiation, the water is led to delay tanks situated inside the target building. Before returned to the target monolith ∼ 10% is led to the ion exchanger. This paper aims at determining the shielding required to ensure that the biological dose-rate requirements in the target building and neighbouring instrument halls are met during operation of facility.
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ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1046/1/012011