This instrument is operational .
Actual instrument setup. The VESUVIO detectors (in the backscattering) are behind the foil cooling and cycling equipment and are therefore not visible.
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Vesuvio is a unique neutron spectrometer, which uses the high intensity of neutrons in the eV energy range and the pulsed nature of the ISIS source to measure atomic momentum distributions in a variety of condensed matter systems.
Energy transfers in the 1-100 eV region and wavevector transfers between 30 and 200 Å-1 are achieved using a filter difference technique. The energy of the scattered neutron is fixed by a nuclear resonance absorption foil and the incident energy and hence energy and momentum transfers are determined using standard time of flight techniques.
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