Abstract
The European Spallation Source will have 42 beam ports as a grid available for a variety of instruments, mostly neutron scattering experiments. Bi-spectral extraction for thermal and cold neutrons must be available to all the beam ports. The moderator design to deliver such neutron beams was driven by the low-dimensional moderator concept. The adopted design, consisting of one flat (3 cm high) moderator placed above the spallation target was considered valid for the initial instruments suite. ESS will however have a beam port system designed such that it will be possible to extract neutrons from moderators above and below the target. With all initial instruments pointing to the top moderator, this opens the possibility to have different types of moderators at the bottom, so that other neutron beams of different intensity, or spectral shape, with respect to the ones delivered by the top moderator, could be envisaged, adding additional scientific opportunities to the facility.
Highlights
Bi-spectral extraction for thermal and cold neutrons must be available to all the beam ports
With all initial instruments pointing to the top moderator, this opens the possibility to have different types of moderators at the bottom, so that other neutron beams of different intensity, or spectral shape, with respect to the ones delivered by the top moderator, could be envisaged, adding additional scientific opportunities to the facility
The ESS beam extraction layout contains 42 beam ports, arranged in two sectors covering a total angle of 2×120◦, pointing to the center of the monolith where the thermal and cold moderators are placed
Summary
L.; Batkov, K.; Klinkby, E.; Mezei, F.; Schönfeldt, T.; Takibayev, A. Journal of Physics: Conference Series, 1021(1), [012066]. Users may download and print one copy of any publication from the public portal for the purpose of private study or research.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have