IMPS: A multianalyser detector system for the thermal three-axis spectrometer IN8

摘要

The primary spectrometer of the ILL's thermal-beam three-axis spectrometer INS has recently been rebuilt to increase the instrument flexibility as well as the monochromatic flux at the sample position. Further improvement of the instrument is now envisaged and consists in the installation of a multianalyser detector system to multiplex the secondary spectrometer. This will enable one to obtain images of selected regions in (Q, omega) space. The design of such a multiplexed secondary spectrometer is based on analytical results reflecting the geometrical considerations and computer simulations performed using the neutron ray-tracing package McStas. (c) 2006 Elsevier B.V. All rights reserved.