Panther — the new thermal neutron time-of-flight spectrometer at the ILL

Autor: Fåk Björn, Rols Stéphane, Manzin Giuliana, Meulien Olivier
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: EPJ Web of Conferences, Vol 272, p 02001 (2022)
Druh dokumentu: article
ISSN: 2100-014X
DOI: 10.1051/epjconf/202227202001
Popis: Panther is a new high-flux medium-resolution direct-geometry thermal-neutron time-of-flight spectrometer at the Institut Laue-Langevin (ILL). It is designed for inelastic neutron-scattering measurements of excitations in condensed matter using single crystals, polycrystalline samples, and liquids. Panther uses double focusing graphite or Cu monochromators, a Fermi chopper, and position-sensitive 3He detectors covering 2 steradians of solid angle. A system of disc choppers and an optional sapphire filter are used to reduce the epithermal neutron background. Thermal neutron background is reduced by a radial oscillating collimator, a beam dump, and an elaborate set of Cd shielding inside the evacuated detector tank. The outside of the tank is covered by a 0.3 m thick layer of borated high-density polyethylene to reduce ambient and cosmic background. The design and performance of the instrument in its current status are described, as well as planned developments.
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