The Cornell High Energy Synchrotron Source, CHESS, is a high-intensity X-ray source primarily supported by the National Science Foundation which provides our users state-of-the-art synchrotron radiation facilities for research in Physics, Chemistry, Biology, and Environmental and Materials Sciences.

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Meet the CHESS personnel.

The list of members of the CHESS External Advisory Committee and the Users' Executive Committee

Each year, over 1,000 scientists and scientists in training visit CHESS to collect data that comprises all or part of their research programs.


Cornell University is an innovative Ivy League university and a great place to work.

The repository of published scholarly research papers by CHESS users.

CHESS was constructed in the period from 1978 to 1980 as a synchrotron x-ray facility, parasitic to the CESR High Energy Physics program.

Focusing on our users and the unique capabilities of CHESS, CHESS-U is an upgrade that will extend CHESS’s capacity for cutting-edge, innovative science and technology.