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X-RAY RUNS: Apply for Beamtime

2017  May 17 - Jun 29

2017  Nov 1 - Dec 21

Issue No. 13
2014.12.15
CHESS
FROM THE DIRECTOR
CHESS's first user operations period as a 3rd generation source completed yesterday morning. As expected, the transition to undulator operations included a few bumps in the road. Nevertheless, I'm very pleased to report that all CHESS's experimental stations are up and running with stable electron and positron beams, and with top-off mode for positrons. We still have lots of work to do to get back to 200 mA in both beams and, if possible, increase the electron beam lifetime. Our goal for the next run is 150 mA and 200 mA by late spring. To test our new experimental capabilities, we've begun bench marking experiments by directly comparing measurements that users perform both at CHESS and at another facility. We already have a few examples. A2 appears to be delivering the same signal-to-noise for total scattering studies as competing beam lines at APS. The new DAVES spectrometer at C line delivers about 100x better signal to noise for XES studies than other facilities. And, the F2 station has quickly commissioned new data collection and analysis tools that dramatically streamline user setup times, promising to make the structural materials studies of the In-Sitμ program hard to beat. Going forward, we'll be working very hard to ensure that CHESS delivers internationally competitive experimental capabilities to our users.

♦  2015 X-RAY RUN SCHEDULE:     

 

February 4 - April 7
Proposals due 12/3/14; Beamtime Requests due 1/5/15

May 27 - July 14
Proposals due 3/10/15; Beamtime Requests due 4/15/15 

 

♦  YOUNG INVESTIGATOR SEMINAR:   "The More You Know"

 

♦  CHESS USERS' MEETING 2015:     

 

June 9 - 10

This fall semester, Cornell High Energy Synchrotron Source (CHESS) furthered its educational goals through student-to-student outreach... more »
RNA polymerase (RNAP) assembles an RNA strand corresponding to the DNA sequence of a gene, in a precisely choreographed series of molecular motions. To understand this critical cellular process, biologists are studying the fine details of the structural changes involved... more »
Imagine an octahedron inside a cube and then let's put spheres on the corner of the cube. Now the octahedron is well enclosed inside the cube and also well-separated from octahedra in adjacent cubic unit cells... more »
A recent collaboration with geologist Alaura Singleton, from Dr. Gordon Osinski's research group at Western University in London Ontario (Canada), and CHESS scientists Matthew Ward... more »
User science with the Maia detector began in earnest in October, in conjunction with a 48-hour workshop on Maia and GeoPIXE... more »
The Macromolecular Diffraction Facility at the Cornell High Energy Synchrotron Source (MacCHESS) held its fifth annual BioSAXS Essentials workshop on October 30 to November 1, 2014. The workshop convened six speakers, all expert practitioners in various topics related to BioSAXS... more »
On the morning of Nov 20th, a group of 17 middle school students and 2 teachers from the Onondaga Nation participated in a series of activities facilitated by the Xraise staff... more »
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The Cornell High Energy Synchrotron Source (CHESS), a national user facility, is supported by the National Science Foundation and the National Institutes of Health/National Institute of General Medical Sciences under NSF award DMR-1332208. CHESS is operated and managed for the National Science Foundation by Cornell University.
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