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@INPROCEEDINGS{Voigt:894057,
author = {Voigt, J. and Zakalek, P. and Rücker, U. and Li, Jingjing
and Ma, Zhanwen and Lieutenant, K. and Gutberlet, T. and
Brückel, T.},
title = {{S}ource requirements for spectrometers at low energy
accelerator driven neutron facilities},
reportid = {FZJ-2021-03011},
year = {2021},
abstract = {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.},
month = {May},
date = {2021-05-17},
organization = {QENS/WINS 2021, online event (online
event), 17 May 2021 - 21 May 2021},
cin = {JCNS-2 / PGI-4 / JARA-FIT / JCNS-HBS},
cid = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
$I:(DE-82)080009_20140620$ / I:(DE-Juel1)JCNS-HBS-20180709},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / 6G4 - Jülich Centre for Neutron
Research (JCNS) (FZJ) (POF4-6G4)},
pid = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G4},
typ = {PUB:(DE-HGF)1},
url = {https://juser.fz-juelich.de/record/894057},
}