SPHERES is a third-generation neutron backscattering spectrometer, located at the 20 MW German neutron source FRM II and operated by the Jülich Centre for Neutron Science. It offers an energy resolution (fwhm) better than 0.65 μeV, a dynamic range of ± 31 μeV, and a signal-to-noise ratio of up to 1750:1.
Wuttke, J. [et al.]. SPHERS, Jïlich's high-flux neutron backscattering spectrometer at FRM II. "Review of scientific instruments", 18 Juliol 2012, vol. 7, núm. 83, p. 075109-075109-11.