Linear parabolic single-crystal diamond refractive lenses for synchrotron X-ray sources

Linear parabolic diamond refractive lenses are presented, designed to withstand high thermal and radiation loads coming from upgraded accelerator X-ray sources. Lenses were manufactured by picosecond laser treatment of a high-quality single-crystal synthetic diamond. Twelve lenses with radius of curvature at parabola apex R = 200   µ m, geometrical aperture A = 900   µ m and length L = 1.5   mm were stacked as a compound refractive lens and tested at the ESRF ID06 beamline. A focal spot of size 2.2   µ m and a gain of 20 were measured at 8   keV. The lens profile and surface quality were estimated by grating interferometry and X-ray radiography. In addition, the influence of X-ray glitches on the focusing properties of the compound refractive lens were studied.
Source: Journal of Synchrotron Radiation - Category: Physics Authors: Tags: X-ray optics refractive lenses diamond laser ablation beam conditioning research papers Source Type: research
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