ABSTRACT
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 = 200â µm, geometrical aperture A = 900â µm and length L = 1.5â mm were stacked as a compound refractive lens and tested at the ESRF ID06 beamline. A focal spot of size 2.2â µm and a gain of 20 were measured at 8â 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.