Abstract
Abstract
A cold neutron triple-axis spectrometer (Cold TAS) has been
installed in HANARO at the Korea Atomic Energy Research Institute,
South Korea. It has been designed for high-resolution
inelastic-neutron-scattering (INS) measurements of spin and lattice
dynamics using a neutron velocity selector (NVS) for incident cold
neutrons. We evaluated the wavelength resolution and harmonics
filtration of the NVS and verified the vertical focusing effects of
the pyrolytic-graphite crystal monochromator. The beam flux at the
sample position and the spectrometer resolution, which are key
factors in INS experiments, attained the typical TAS specification.
Finally, we exemplified INS spectra to show the current performance
of the high-resolution mode and magnetic-excitation measurements.
Subject
Mathematical Physics,Instrumentation