GeoCARS microfocusing Kirkpatrick–Baez mirror bender development

Abstract

We present development of microfocusing Kirkpatrick–Baez mirrors GeoSoilEnviroCARS. The mirror is made of single-crystal silicon and the desired elliptical shape is formed by elastic bending with a two-parameter bender. We present data from long trace profiler measurements of the bent shape, which verifies the design principle, and motivates a new bender design. We tested the re-engineered mirror bender focusing white radiation from a National Synchrotron Light Source bending magnet, achieving a 2.5 μm focus with a gain (using only one mirror) of 91.