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- W4296598269 abstract "This note proposes a new concept for the production of ultracold neutrons (UCNs) in a decelerating trap. UCNs are widely used in the physics of elementary particles and fundamental interactions, and can potentially be used in studies of condensed matter. However, most of these studies are limited by the available UCN densities and fluxes. One of the ways to increase them is to extract more neutrons from the full phase space of a source and better exploit peak fluxes in pulsed neutron sources, orders of magnitude larger than the mean values. For instance, at ESS, the pulsed flux will be a factor of ∼25 larger than the mean flux of ILL at nominal power. Here, a concept of UCN sources is proposed, which allows to implement this idea. We propose to produce very cold neutrons (VCNs) in converters located in a neutron source, extract and slow them down to UCNs by a decelerating magnetic or material trap. As shown in this paper, for both pulsed and continuous neutron sources, this method could provide a high conversion efficiency of VCNs to UCNs with low losses of density in the phase space. More detailed calculations and the proposals for concrete technical designs are going to be developed in future publications." @default.
- W4296598269 created "2022-09-22" @default.
- W4296598269 creator A5040306675 @default.
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- W4296598269 date "2023-01-05" @default.
- W4296598269 modified "2023-09-26" @default.
- W4296598269 title "Production of ultracold neutrons in a decelerating trap" @default.
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- W4296598269 doi "https://doi.org/10.3233/jnr-220006" @default.
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