X-ray transfocators: focusing devices based on compound refractive lenses

X-ray transfocators: focusing devices based on compound refractive lenses

This paper describes a tunable X-ray focusing apparatus, referred to as a transfocator, based on compound refractive lenses. By varying the number of lenses in the beam, the X-ray energy focused and the focal length can be varied continuously throughout a large range of energies and distances. The instrument can be used in both white and monochromatic beams to focus, pre-focus or collimate the ...

X-ray focusing with compound lenses made from beryllium.

We have measured the intensity profile and transmission of x rays focused by a series of biconcave spherical unit lenses fabricated from beryllium. The use of beryllium extends the range of operation of compound refractive lenses, improving transmission, aperture size, and gain. The compound refractive lens was composed of 160 biconcave unit lenses, each with a radius of curvature of 1.9 mm. Tw...

Ray-tracing simulation of parabolic compound refractive lenses

X-ray compound refractive lenses (CRL) are becoming a widespread tool for the generation of microfocus spot sizes at synchrotron beamlines. The calculation of their performance by means of ray-tracing is useful for a rapid estimation of flux, resolution and focusing properties achievable in a beamline, when other optics are present, or simply to study the lens acceptance and focusing in the pre...

Near-diffraction Limited Coherent X-ray Focusing using Planar Refractive Lenses made in Epoxy Resist SU8

An Imaging System for Focusing Tests of Li Multiprism X-ray Refractive Lenses

For rapid and efficient tests of novel X-rays optics, such as lithium-based compound refractive lenses [1], we have built a fast X-ray sensitive CCD imaging system. We report on the linearity, response and resolution of the microscopebased imaging system. For the low magnifications used here (X2-X10), we find that a thinly doped YAG screen has a poorer resolution than a thick YAG screen. We pro...