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Figure 7
Kirkpatrick–Baez nano-focusing alignment captured from the browser client, demonstrating that the Monte Carlo optics engine reproduces the slit-clipped beam shapes used in practice to align the KB mirror pair. (a) Focused-beam profile pop-up panel at the sample plane showing the fully aligned state: the 2D spot is displayed with horizontal and vertical 1D cuts and the measured FWHM values, showing the simulated focus obtained after the automated alignment sequence has converged. (b, c) Two intermediate states of a KB beam-defining slit scan: the slit aperture just upstream of the KB pair is varied and the resulting beam pattern observed on the downstream detector screen changes accordingly. When the slit is opened wide (b), four approximately square distributions appear on the detector screen: the doubly reflected focused beam (reflected by both KB-V and KB-H), the direct bypass beam (reflected by neither mirror), and the two singly reflected beams (KB-H only and KB-V only). When the slit is closed down (c), it selects the doubly reflected focused beam and the pattern is a single distribution.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 33| Part 5| September 2026|
https://doi.org/10.1107/S1600577526006788
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