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The geometry of the CSPad (Cornell SLAC Pixel Array Detector) is described elsewhere, but briefly, the exact alignment of each 2x1 (section) in each quad differs from detector to detector (there are 3 currently) and (potentially) from experiment to experiment. Optical measurements of the detector metrology has been made for each detector configuration (CSPad metrology and calibration files, links), and cspad data array alignment have been worked out on the basis of these (2011-08-10 CSPad XPP CSPAD alignment parameters), sufficient for conveniently displaying the full detector image.

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