In the article, Fischetti describes the development of a quad collimator that narrows the APS x-ray beam to a user selectable “minibeam” of 5, 10, or 20 micrometers in order to facilitate the study of extremely small protein crystals or to locate the best part of a heterogenous crystal. Fischetti notes that the quad collimator allowed the process of selecting the correct collimator aperture size for a given protein crystal size to be automated. The entire article can be read at Nature 465(10), 825 (10 June 2010). DOI:10.1038/465824a
The Advanced Photon Source is supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357.
Argonne National Laboratory seeks solutions to pressing national problems in science and technology. The nation's first national laboratory, Argonne conducts leading-edge basic and applied scientific research in virtually every scientific discipline. Argonne researchers work closely with researchers from hundreds of companies, universities, and federal, state and municipal agencies to help them solve their specific problems, advance America's scientific leadership and prepare the nation for a better future. With employees from more than 60 nations, Argonne is managed by UChicago Argonne, LLC for the U.S. Department of Energy's Office of Science.