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Figure 14
Smallest measured beam size using the wire scan technique for all three lens stacks (top: unpolished C* lenses, middle polished C* lenses, bottom Be lenses). We first take the numerical derivative ΔIdiode/Δx of the beam intensity measured via the current generated in a p-i-n photodiode (raw signal: coloured lines with points). This derivative (black dots) is fitted by a Gauss function (solid lines). Left column: horizontal beam size; right column: vertical beam size.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 29| Part 3| May 2022| Pages 629-643
https://doi.org/10.1107/S1600577522001795
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