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000894057 1001_ $$0P:(DE-Juel1)131018$$aVoigt, J.$$b0
000894057 1112_ $$aQENS/WINS 2021$$conline event$$d2021-05-17 - 2021-05-21$$wonline event
000894057 245__ $$aSource requirements for spectrometers at low energy accelerator driven neutron facilities
000894057 260__ $$c2021
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000894057 520__ $$aThe shutdown of several national reactor driven neutron sources has stimulated intense research and development activities for successor facilities[1]. A promising technology is the neutron production by low energy nuclear reactions, that can be driven by accelerators operating in the particle energy range between 3 and 100 MeV. While the neutron yield of theses reactions is much lower than the neutron yield of the spallation reaction, the lower particle energy enables a very close coupling of the thermal and cryogenic moderators to the target and therefore small volume moderators with a high density of slow neutrons. On the other hand, the comparably low particle energies facilitate the shielding issue significantly and allow therefore neutron optical components in a distance as close as 50 cm from the thermal or cold moderator surfaces allowing the extraction of a reasonably divergent beam from the source, which can be efficiently transported to the sample by modern neutron optics. Therefore instruments, which require a large phase space, can benefit strongly from the characteristics of a low energy accelerator driven neutron facility (LENF). Among them are typically spectrometers of both direct and indirect geometry, which require typically relaxed spatial and angular resolution and a good energy resolution. Here we present source parameters that have been determined for different spectrometers employing thermal and cold neutrons.
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000894057 7001_ $$0P:(DE-Juel1)131055$$aZakalek, P.$$b1
000894057 7001_ $$0P:(DE-Juel1)130928$$aRücker, U.$$b2
000894057 7001_ $$0P:(DE-Juel1)7897$$aLi, Jingjing$$b3
000894057 7001_ $$0P:(DE-Juel1)180457$$aMa, Zhanwen$$b4$$ufzj
000894057 7001_ $$0P:(DE-Juel1)178839$$aLieutenant, K.$$b5
000894057 7001_ $$0P:(DE-Juel1)168124$$aGutberlet, T.$$b6
000894057 7001_ $$0P:(DE-Juel1)130572$$aBrückel, T.$$b7
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