3D angular drifts of a grating and schematic of the monitoring beam-line.
Schematic of focal spot relative offsets on CCD camera.
(a) ξ axis and (b) ψ axis relative offsets of FSZ to FSC versus tilt and tip.
ξ axis relative offsets of FSL to FSC versus (a) tilt and tip, (b) tilt and rot, and (c) tip and rot. ψ axis relative offsets of FSL to FSC versus (d) tilt and tip, (e) tilt and rot, and (f) tip and rot.
Relative offsets of FSZ and FSL to FSC versus (a) tilt in ξ axis, (b) tip in ψ axis, and (c) rot in ψ axis. (d) An image captured during the experiment. Dot and line are experiment and theory results, respectively.
Schematic of beam-line for focal spot positional stability measurement.
Long-term (2 h) 2D positional stability of (a) FSZ, (b) FSL, and (c) FSC. (d) Energy spatial distribution of FSZ.
Measurement errors of angular drifts corresponding to reading errors of focal spot relative offsets.
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