Citation
Magán, Miguel and Sordo Balbín, Fernando and Zanini, Luca and Terrón, Santiago and Ghiglino Novoa, Angelo and Martínez, F. and Vicente Albendea, Juan Francisco de and Vivanco Sánchez, Raúl and Perlado Martín, José Manuel and Bermejo, F. J. and Mezei, Ferenc and Muhrer, Guenter
(2013).
Neutronic analysis of the bi-spectral moderator such as that proposed for ESS.
"Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment", v. 729
;
pp. 417-425.
ISSN 0168-9002.
https://doi.org/10.1016/j.nima.2013.07.011.
Abstract
This paper reports on design studies concerning a moderator concept which aims to maximize the time averaged flux. The idea is to provide neutron spectra showing two clear maxima, with peaks at View the MathML source and View the MathML source arising from leakage from both cryogenic and thermal moderators. Such a concept known as a bi-spectral moderator (Mezei, 2006 [1]) while proven on a reactor source has only been examined for the ESS 2003 proposal. Filges et al. (2003 [2]), which featured a different design than the current ESS. This paper thus reports on a baseline design for such a moderator concept and shows that it can provide substantial gains in count rates for those applications not requiring high resolution in time-of-flight.
