Relocation and upgrade of neutron spin echo spectrometer, iNSE

Abstract: ISSP-NSE instrument previously installed at the C2-2 port of the guide hall of JRR-3M, the Japan Atomic Energy Agency (JAERI), was relocated to the C2-3-1 port at the end of the C2 cold guide and renamed as “iNSE”. The instrument is now equipped with a neutron velocity selector capable of changing the neutron wavelength in the range of 4– with the wavelength resolution from 10% to 20%. The scattering angle was extended up to . A new set of polarizer and analyzer consisting of the remanent supermirrors derives about 87% of polarized neutrons with the wavelength of . The neutron flux at the sample position was increased by a factor of 2 to 3. At present, the upgraded instrument covered the range of the spatial and time domains of and , and these ranges may be further extended. [Copyright &y& Elsevier]