Colloquium: Synchrotron X-ray Science—Exploring the Post-APS-U Advancements in Advanced Crystallographic Program at NSF’s ChemMatCARS

ABSTRACT

The APS-U upgrade project commenced on April 17, 2023, and is anticipated to conclude on April 17, 2024. Throughout the APS-U dark period, NSF’s ChemMatCARS underwent significant enhancements. The original beamline (15-ID1) has been upgraded to accommodate an extended X-ray energy range spanning from 5 KeV to 70 KeV. Additionally, multilayer monochromators have been installed to augment its capabilities. Moreover, a new canted beamline (15-ID2) has been constructed, designed to operate within the X-ray energy range of 3.5 KeV to 31.5 KeV.

This presentation will unveil the enhanced capabilities of NSF’s ChemMatCARS' advanced crystallographic program post APS-U and its subsequent upgrade. The initiative encompasses the development of two novel techniques: Resonant Diffraction/Diffraction Anomalous Fine Structure below 5 KeV and Serial Small Molecule Crystallography for studying irreversible systems. These innovations mark a significant advancement in crystallography, promising groundbreaking insights into various scientific domains.

BIOGRAPHY

Prof. Yu-Sheng Chen (Fellow, American Crystallography Association) received his Ph.D. degree in physics from the University of Toledo, Ohio, in 2003. For the past 2 decades, he has worked as a beamline scientist applying advanced radiation sources. He is currently a research professor at The University of Chicago and a lead scientist in Advanced Crystallography/NSF’s ChemMatCARS at Argonne National Laboratory. His current research has been focused on high energy X-ray single crystal diffraction, structural dynamic studies, resonant single crystal diffraction/diffraction anomalous fine structure, etc. He has published more than 230 peer-reviewed journal articles, review articles, and books, including Energetic Materials Book Review – X-ray crystallography, beyond structure in energetic materials (Elsevier, 2003.), and New Fluorinated Carbons, Fundamentals and Applications (Elsevier, 2017). Prof. Chen is an elected fellow of the American Crystallography Association in 2016.