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Figure 1
(a) Schematic illustration of the KB nanofocusing mirrors and a single-grating interferometer equipped in EH5 on BL3 at SACLA. (b) Workflow for calculating the wavefront error from the acquired self-image, based on the Fourier transform method. The abbreviations `Ver.' and `Hor.' indicate the vertical and horizontal directions, respectively. (c) Wavefront errors with purposely induced alignment errors. (d) Calculated profiles of the Legendre polynomials in equations (2)[link]–(4)[link][link]. (e)–(g) Obtained relationships between the fitted amplitudes of wavefront errors (EH, EV and EP) and corresponding angular misalignments for (e) horizontal pitching angle, (f) vertical pitching angle and (g) perpendicularity.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 32| Part 6| November 2025| Pages 1534-1538
https://doi.org/10.1107/S1600577525008434
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