001     894057
005     20250129094300.0
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037 _ _ |a FZJ-2021-03011
041 _ _ |a English
100 1 _ |a Voigt, J.
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111 2 _ |a QENS/WINS 2021
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|d 2021-05-17 - 2021-05-21
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245 _ _ |a Source requirements for spectrometers at low energy accelerator driven neutron facilities
260 _ _ |c 2021
336 7 _ |a Abstract
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336 7 _ |a Conference Paper
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336 7 _ |a INPROCEEDINGS
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520 _ _ |a The 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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700 1 _ |a Zakalek, P.
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700 1 _ |a Rücker, U.
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700 1 _ |a Li, Jingjing
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700 1 _ |a Ma, Zhanwen
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700 1 _ |a Lieutenant, K.
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700 1 _ |a Gutberlet, T.
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700 1 _ |a Brückel, T.
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856 4 _ |u https://juser.fz-juelich.de/record/894057/files/voigt.pdf
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914 1 _ |y 2021
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