Gainov, R.; Mezei, F.; Füzi, J.; Russina, M.: Design concepts for a supermirror V-cavity based combined beam polarizer and compressor system for the upgraded neutron time-of-flight spectrometer NEAT. Nuclear Instruments & Methods in Physics Research A 930 (2019), p. 42-48
10.1016/j.nima.2019.03.046
Abstract:
Here we present several design concepts for polarization of incoming neutrons based on the use of supermirror optical devices for application in time-of-flight neutron spectroscopy. The polarization systems, designed for time-of flight spectrometer NEAT [], are using so-called “V-cavity” approach and due to the conditions imposed by instrument layout are to polarize and compress the neutron beam. The polarizers design secures high values of both polarization and transmittance of neutron beam intensity, corresponding to recent state-of-the-arts performances. The results are supported by analytical calculations and simulations by VITESS software.