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Quantum efficiency measurements of an x-ray charge-coupled device in the 2–10 keV spectral region by means of a double crystal monochromator coupled to an x-ray tube

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Abstract

The Atomic Energy Commission has set up a laboratory dedicated to the calibration of x-ray cameras mainly used in the Laser MégaJoule Facility in the Bordeaux region of France. Thanks to a double crystal monochromator specifically designed to perform such calibration, we calibrated a thinned, back-illuminated x-ray CCD manufactured by Roper Scientific Inc. over the 2.2–8.9 keV spectral region. Quantum efficiency results are in good agreement with those of previous works. To explain slight differences, we studied the difference between monochromatization methods performed either using a crystal monochromator or filters. Results showed that the latter method appears to be too dependent on the x-ray source parameters to perform accurate and relevant calibration on x-ray cameras.

© 2014 Optical Society of America

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