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Figure 9
Fitting example with concave hyperboloid height data. The red dot indicates the location of the chief ray intersection from the fitting. The fitting is carried out with fixed p, q, and θ, and optimized xi, yi, zi, α, β, and γ with boundaries yi ∈ [−0.5 mm, 0.5 mm] and α ∈ [−1 mrad, 1 mrad].

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 33| Part 2| March 2026| Pages 278-288
https://doi.org/10.1107/S1600577525011282
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