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Figure 2
(a) Experimental geometry scheme. Polarized monochromatic synchrotron radiation is travelling at 45° with respect to the analyzer lens axis, in the horizontal plane of the storage ring, while the analyzer slit is perpendicular to it. (b) Detector setup placed on the analyzer exit plane, with central MCP and two apertures along the energy-dispersion axis through which the selected electrons are sent into the spin polarimeters (aperture W/B lead electrons to VLEED-W/VLEED-B, respectively); the size of the aperture (four possibilities) can be selected via a carousel (not visible in the figure) and determines the energy and momentum resolution as described by Okuda et al. (2011BB25). (c) Three-dimensional rendering of the APE-LE end-station. The labelling shows all the sections of the VESPA analyzer as well as the sample chamber and the preparation chamber, which is directly connected to the VLEED scattering chambers.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 24| Part 4| July 2017| Pages 750-756
https://doi.org/10.1107/S1600577517006907
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