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CAMEA-A novel multiplexing analyzer for neutron spectroscopy

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Author Groitl Felix, Graf Dieter, Birk Jonas Okkels, Marko Marton, Bartkowiak Marek, Filges Uwe, Niedermayer Christof, Rueegg Christian, Ronnow Henrik M.,
Project High efficiency neutron spectrometer optimized for investigations under extreme conditions
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Original article (peer-reviewed)

Journal REVIEW OF SCIENTIFIC INSTRUMENTS
Volume (Issue) 87(3)
Page(s) 035109
Title of proceedings REVIEW OF SCIENTIFIC INSTRUMENTS
DOI 10.1063/1.4943208

Open Access

URL https://infoscience.epfl.ch/record/218562?ln=en
Type of Open Access Repository (Green Open Access)

Abstract

The analyzerdetector system continuous angle multiple energy analysis will be installed on the cold-neutron triple-axis spectrometer RITA-2 at SINQ, PSI. CAMEA is optimized for efficiency in the horizontal scattering plane enabling rapid and detailed mapping of excitations. As a novelty the design employs a series of several sequential upward scatteringanalyzer arcs. Each arc is set to a different, fixed, final energy and scattersneutrons towards position sensitive detectors. Thus, neutrons with different final energies are recorded simultaneously over a large angular range. In a single data-acquisition many entire constant-energy lines in the horizontal scattering plane are recorded for a quasi-continuous angular coverage of about 60°. With a large combined coverage in energy and momentum, this will result in a very efficient spectrometer, which will be particularly suited for parametric studies under extreme conditions with restrictive sample environments (high field magnets or pressure cells) and for small samples of novel materials. In this paper we outline the concept and the specifications of the instrument currently under construction.
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