The I21 beamline at Diamond Light Source is dedicated to advanced resonant inelastic X-
ray scattering (RIXS) for probing charge, orbital, spin and lattice excitations in materials …

High-speed adaptive correction of optics, based on real-time metrology feedback, has
benefitted numerous scientific communities for several decades. However, it remains a …

We present the development of a Fizeau interferometer stitching system to characterize the
surface profile of state-of-the-art X-ray optics for synchrotron and free electron laser sources …

A real-time and accurate characterization of the X-ray beam size is essential to enable a
large variety of different experiments at free-electron laser facilities. Typically, ablative …

A new type of optical element that can focus a cylindrical wave to a point focus (or vice
versa) is analytically described. Such waves are, for example, produced in a beamline …

Reflective mirrors are used on most synchrotron and free electron laser (XFEL) beamlines to
transport X-rays from the source to the sample. They are achromatic and provide larger …

For advanced X-ray sources such as synchrotron radiation facilities and X-ray free electron
lasers, a smooth, structure-free beam on the far-field plane is usually strongly desired. The …

Autocollimators play an important role in the high-precision testing of the slope errors of X-
ray and large flat mirrors. However, the time-varying errors caused by environmental …

At-wavelength metrology of X-ray optics plays a crucial role in evaluating the performance of
optics under actual beamline operating conditions, enabling in situ diagnostics and …

The diaboloid is a reflecting surface that converts a spherical wave to a cylindrical wave.
This complex surface may find application in new Advanced Light Source bending-magnet …