Robert Fischetti of the Argonne Biosciences Division, and Associate Director of the General Medicine and Cancer Institutes Collaborative Access Team (GM/CAT-CAT) at Sector 23 of the Advanced Photon Source (APS), is featured in the article “Crystal-Clear Images” in the 10 June 2010 issue of Nature.

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.

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