An optical design supporting variable illumination size and coherence fraction for x-ray imaging

At the National Synchrotron Light Source II, a beamline has been designed that aims to meet the needs of general CDI experiments at x-ray energies between 5 and 15 keV, where access to nanoscale information can be provided in “full-field” images of micron-sized particles in Bragg- and forward-scattering geometries. Here, we present the optical design underlying the proposed beamline, which delivers a variably-sized focal spot in the micron range with independently vari