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X-RAY RUNS: Apply for Beamtime

2017  Nov 1 - Dec 21

2018  Feb 7 - Apr 3
2018  Proposal/BTR deadline: 12/1/17

2018  Apr 11 - Jun 4
2018  Proposal/BTR deadline: 2/1/18

CHESS Director Joel Brock recently announced the exciting news: “Over the next two years, the CHESS-U project will transform the laboratory. We will do this by optimizing the particle accelerator for x-ray production, and enhancing our x-ray capabilities through unique technology. This upgrade will introduce new scientific possibilities for our users and the synchrotron scientists of tomorrow.”

The CHESS-U project has many facets. The CESR accelerator gets upgraded with multi-bend achromat magnet technology, converts to running only a single particle beam, and enhances the energy from 5.3 to 6.0 GeV and 200 milliAmperes. With a single type of charged particle in the machine, half of the x-ray beamlines will be turned around and rebuilt to handle the heat load, and deliver the much higher photon flux, of individually tunable undulator sources. Overall, the laboratory is being optimized to deliver ultra-high-flux, high energy x-ray beams for future experiments. During this past summer shutdown, the space was cleared for the new accelerator and beamline upgrades by removing the CLEO particle physics detector – enjoy the time-lapsed video of that process here (

Driving the upgrade process are new science capabilities CHESS wants to provide to the national user community. Many of you participated in helping to identify future science needs during various 2016 summer science workshops. Following the workshops, our user community helped put together a summary document “New Science Made Possible by CHESS-U” which highlights exciting new opportunities. With this document, we are excited to share the impressive capabilities and potential impacts on science, technology, and society with the CHESS community. Read more here… (

 Vacuum Tech disassembling CESR.



Submitted by: Ernest Fontes, CHESS, Cornell University