Speaker
Mrs
Paula Luna
(Consorcio ESS-Bilbao)
Description
MIRACLES will be the neutron time-of-flight backscattering spectrometer at the European Spallation Source in Lund, Sweden.[1] This high-resolution spectrometer will display a best energy resolution of δ(~2.5 μeV can be easily tuned to match the observation time of the system under study. Moreover, a unique dynamic range covering an energy transfer for quasielastic neutron scattering (QENS) measurements of E ~ ±500 μeV is anticipated. Finally, the flexibility to select the incident energy within a wide range will allow to carry out inelastic neutron scattering (INS) spectra of about 20 meV.
The instrument design has been subjected to significant modifications in the conceptual design of its neutron optics system, with respect to the original concept.[2] In addition, the newer detailed design of the secondary spectrometer pays special attention to allow minimization of the energy resolution contribution from the secondary spectrometer. These points, as well as future design efforts will be oriented to provide MIRACLES with an outstanding performance that will unfold new opportunities in neutron spectroscopy.
[1] N. Tsapatsaris et al, Rev. Sci. Instrum. 87 (8), 085118 (2016).
[2] P. Luna, et al. Physica B 564 64–68 (2019); P. Luna et al. (in preparation).
Primary authors
Mrs
Paula Luna
(Consorcio ESS-Bilbao)
Fernando Sordo
(Consorcio ESS-Bilbao)
Felix Villacorta
(ESS-Bilbao)
Prof.
Heloisa Nunes Bordallo
(Niels Bohr Institute-University of Copenhagen. )
