https://doi.org/10.1051/epjconf/202227202010
Conceptual design of a radial collimator for MIRACLES, the time-of-flight backscattering spectrometer at the European Spallation Source
1
ESS-Bilbao. Parque Científico y Tecnológico Bizkaia Nave 201, 48170 Zamudio, Spain
2
Neutron Spectroscopy Department, Wigner Research Centre for Physics, Konkoly Th. M. 29-33, 1122 Budapest, Hungary
3
Niels Bohr Institute-University of Copenhagen. Universitetsparken 5-2100 Copenhagen, Denmark
4
ESS ERIC, P.O. Box 176, SE-22100 Lund, Sweden
* Corresponding author: rmartinez@essbilbao.org
Published online: 17 November 2022
A parametrized conceptual design for a radial collimator in a neutron backscattering instrument is presented, with application to the characteristic geometry of the MIRACLES spectrometer, that will be constructed at the European Spallation Source (ESS). The analytic development of this design has considered both the forward scattering (sample-analyzer) and backscattering (analyzer-detectors) pathways. All the characteristic dimensions (internal and external radii, slit angle) and figures of merit (such as transmission and estimated background reduction) of the device are calculated as a function of the focal points. Finally, the estimated performance of the final concept has been validated by Monte Carlo simulations.
© The Authors, published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
