News

For most of CHESS’s history, it was not possible to use undulator insertion devices. The reason for this was that in order to counter-rotate electrons and positrons in the same storage ring there had to be a “pretzel” orbit that caused the two particle beams to avoid parasitic crossings (Fig. 1), but also not go through the centers of potential undulator sources.

Imagine building a chemical reactor small enough to study nanoparticles a billionth of a meter across.

Eddy Arnold, Board of Governors Professor of Chemistry and Chemical Biology at Rutgers University, and Resident Faculty Member at the Center for Advanced Biotechnology and Medicine (CABM), was recently elected as a Fellow of the American Crystallographic Association (ACA).

CHESS scientist Ken Finkelstein and engineers Aaron Lyndaker and Tom Krawczyk have just completed a unique, high resolution spectrometer for x-ray fluorescence studies.

As of October 2014, the three CHESS experimental stations known as G-line joined A1 and A2 in becoming among the first undulator-fed beam lines at CHESS.

Starting last October, the CLASSE IT group has been commissioning a new data acquisition network with high-speed low-latency connections from the CHESS beamlines to over 130 terabytes of redundant disk arrays dedicated to the storage of CHESS x-ray data.

The CHESS A-Line controls and safety systems have been upgraded to a modern PLC based system.

The CHESS West wiggler source was removed over the summer. In its place are two custom 1.5m CHESS Compact Undulators which now feed the A-line/G-line endstations.