X-ray Optics Developments and Characterization at the Advanced Photon Source

This presentation will begin with a brief introduction to the Advanced Photon Source Upgrade (APS-U), followed by a discussion of current optics R&D activities that support the APS-U and APS operations and future improvements.  The APS-U includes a 7 multi-bend achromat lattice, which is expected to improve the source horizontal emittance by a factor of nearly 100 (reaching 41 picorad) and the coherence flux by factors of 100 - 1000 compared to the current APS. These improvements will unleash the power of X-ray microscopy and other experimental techniques that depends on coherence and flux, enabling the exploration of new frontiers in science with unprecedented sensitivity and resolution. Critical to achieving these goals is the availalibity of state of the art optics along with the ability to efficiently monitor and precisely control and manipulate the beam wavefront to preserve the source’s quintessential properties and/or to deliver the maximum coherent flux at the sample.

Looking into the distant future, even further leaps in technologies incorporating intelligent design will be required to take full advantage of next generation light sources like the APS-U. In addition to advanced optics, these technologies might include sophisticated diagnostic tools such as smart wavefront sensors (ideally non-invasive) and beam position monitors, combined with adaptive optics having intelligent feedback control systems and algorithms—all working seamlessly to compensate in real time for source disturbances and optics imperfections, misalignments, and thermo-mechanical distortions in the beamline.

Recently, DOE Basic Energy Sciences has sponsored a three-year collaborative R&D project, among four DOE light sources, to develop technologies for wavefront-preserving mirrors and wavefront sensors. Further development of these new technologies could contribute to realizing the above vision of the future. Results of this project will be summarized.

*The research at Argonne National Laboratory was supported by the U.S. Department of Energy Office of Science-Basic Energy Sciences under Contract No. DE-AC-02–06CH11357.