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Figure 2
Gain inhomogeneity map (partial image) of a 2 × 2 mosaic fiber-optic taper input CCD detector. (a) Detector input layout. (b) Image levels along dotted circle in image (a) for raw and corrected images. The flood-field beam is not perfectly homogeneous radially but has central symmetry, allowing the difference in gain between each quadrant to be measured by taking the intensity profile along a circle. The residual non-homogeneity between each quadrant is measured to be 5%.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 13| Part 2| March 2006| Pages 195-203
https://doi.org/10.1107/S0909049505034278
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