NEAT experiments at BENSC

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Abstract
NEAT is a multichopper time-of-flight spectrometer for inelastic neutron scattering at medium and very low energy and momentum transfers, including inelastic small-angle scattering (e.g. quasielastic or Brillouin scattering). NEAT was commissioned early in 1995 and is in continuous operation for experiments at the Hahn-Meitner-Institut (HMI) since May 1995. Its basic conception is derived from that of the INS spectrometer at the Institut Laue-Langevin (ILL), Grenoble. The further development at the Berlin Neutron Scattering Center (BENSC) has, however, led to a number of modifications yielding a significant improvement of this type of instrument. As a result, the duration of an experiment with given energy resolution carried out with NEAT is quite comparable to that of a similar INS-experiment, in spite of the fact that the thermal neutron flux of the BER-II reactor at HMI is inferior to that of the Grenoble high-flux reactor by an order of magnitude.

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