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Figure 2
Schematic of the coordinate systems in use: the mirror-canonical coordinate system (x, y, z) (compare with Fig. 1[link]) and the mirror-related coordinate system (X, Y, Z), where the tangent to the X = 0 profile at the mirror centre P0 (X = 0, Y = 0, Z = 0) is equal to zero. The position of the source S is in the focal point of the diaboloid's generating parabola (the cyan line); F denotes the focus point for the central ray (the red lines). The conjugate (beamline optical design) parameters of the diaboloidal mirror (the thick blue line) are the object distance (from S to P0), p, the image distance (from P0 to F), q, and the angle of incidence for the central ray at the centre of the mirror, θ.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 28| Part 4| July 2021| Pages 1031-1040
https://doi.org/10.1107/S1600577521004860
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