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Figure 1
Types of movement: Euclidean (left) and non-Euclidean (right). Left: the detector panel can move backwards and forwards on the spindle connecting its midpoint to the sample by distance d, and rotate by two angles on two axes orthogonal to the spindle axis (α and β). This will affect the predicted spot locations (or, conversely, it will affect the relative arrangement of back-projected rays). Right: the detector panel can move around polar coordinates θ, φ and ψ around any arbitrary axis passing through the sample. This will not affect the relative arrangement of ray projections back onto the Ewald sphere, only their absolute position relative to the beam centre.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 24| Part 6| November 2017| Pages 1152-1162
https://doi.org/10.1107/S1600577517013327
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