Abstract
Ellip tically-shaped hollow glass capillaries are the custom ary optic for micro X-ray beam experiments at the Cornell High Energy Synchrotron Source (CHESS). We have been able to manufacture optics that have produced x-ray spot sizes from 5 to 50 μm, gains in intensity of 10 to 500, divergences from 2 to 9 milliradians, and working distances between the tip of the capillary to the focus ranging from 20 to 150 mm. We discuss the basics in capillary design and explore the question of how well a single-bounce monocapillary can best match synchrotron sources to particular microbeam experiments, such as confocal X-ray fluorescence, microbeam powder X-ray diffraction, microbeam protein crystallography, and microbeam small angle X-ray scattering.
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