From the Director
Dear Colleague,

This month, we are welcoming a new MacCHESS director, Jeney Wierman. Jeney has extensive synchrotron experience. She performed her PhD research at CHESS and then worked in the Structural and Molecular Biology Division of SSRL. Jeney brings an integrative approach to structural biology that will certainly help develop CHESS’s serial crystallography and room-temperature capabilities. Jeney takes over the MacCHESS directorship from Marian Szebenyi, who will be retiring later this year after 45 years at MacCHESS . Please join me in congratulating both Jeney and Marian.
We are also in the middle of our summer student program and we have 12 remarkable students performing research and engineering projects at CHESS. These students come from various community colleges, the University of Puerto Rico, and other universities across the US. They are working on projects that will directly impact users, making experiments at CHESS more user-friendly and robust.
As always, there are many workshops being held at CHESS. Workshops in the near future include:
I encourage you to register and attend. Our users are filled with great ideas and we want to hear them. 
As we continue construction for the new High Magnetic Field beamline, we are also preparing for the fall run, and accepting proposals for the November to December 2022 cycle. Proposal deadlines and details can be found here.
Thanks, and hope you are having a wonderful summer!
Joel Brock, Director, CHESS (email Joel)
Welcome Jeney Wierman - New MacCHESS Director
Jeney Wierman started as the new MacCHESS Director on July 1st, 2022. Read Jeney's welcome message to the whole CHESS Community.

Jeney takes over the MacCHESS directorship from Marian Szebenyi, who will be retiring later this year after 45 years at MacCHESS.
Summer Undergraduate Students at CHESS
Approximately a dozen REU (Research Experiences for Undergraduates) students each summer are hosted by CHESS. Students from the CHESS summer programs -- SERCCS, PREM, and SUNRiSE -- are midway through their summer undergraduate research experience.
Intermediate Valence State in YbB4 Revealed by Resonant X-ray Emission Spectroscopy
CHEXS users have directly observed an electronic configuration that is quantum mechanically mixed between the Yb2+ and Yb3+ valence states in the material YbB4. These observations confirm an “intermediate valence” conjecture for this material, which was first hypothesized 50 years ago.
Computing, Machine Learning, and Data-Intensive Science at Synchrotron Facilities
On July 26th & 27th, CHESS is hosting an interdisciplinary, interactive workshop on the challenges and opportunities in scientific computing, machine learning, and other aspects of data-intensive science at synchrotron facilities.
New Science Opportunities with X-rays at the High Magnetic Field Frontier
This 3-day, hybrid in-person/remote workshop will bring together pioneering technical leaders from high magnetic field laboratories, synchrotrons, and FELs with a broad & interdisciplinary community of existing and potential future users.
New, diverse users get firsthand experience at HEXT workshop
The High Energy X-ray Techniques (HEXT) workshop took place in late May, giving students the knowledge and skills to plan, conduct, and interpret synchrotron experiments, answering questions specific to their research interests in material science.
The 3rd International Pan American Light Sources for Agriculture (PALSA 2023) will be held on July 12-14, 2023.
Promoted by the Cornell High Energy Synchrotron Source (CHESS) at Cornell University in Ithaca, NY, the event will return to an in-person meeting with a host of speakers and events.
New Experimental Hall - Construction Continues
As many inhabitants of Wilson lab have heard, seen, smelled, and felt, the New Experimental Hall (NEH) civil construction project is full speed ahead. Click through for an aerial video and update on construction!
Issue No. 97 2022.7.15