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Figure 1
Schematic diagram of (a) box-beam and (b) line-beam DCT. In box-beam DCT, the beam size is defined by the slit and the illuminated sample volume can be considered as 3D, while the beam is focused to a line shape by Kirkpatrick–Baez (KB) mirrors and illuminates a 2D section of the sample in the line-beam acquisition. The laboratory coordinate system is right handed and defined as follows: [\hat x] is along the X-ray beam, [\hat z] is along the rotation axis, and [\hat y] is transverse and perpendicular to the plane defined by [\hat x] and [\hat z]. The detector system is defined as follows: the origin sits on the top-left corner, u is horizontal and perpendicular to the beam, v points down, and ω is along the rotation direction.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 58| Part 3| June 2025| Pages 796-812
https://doi.org/10.1107/S160057672500250X
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