From the Director
Dear Colleague,

2022 has begun and there is a lot to look forward to this year here at CHESS.
The storage ring is running and beamlines are ready to go. The first 2022 CHESS experimental run begins next week, with access to all CHESS beamlines via in-person, remote, mail in, and joint venture modes.
As we prepare for this experimental run, some things have changed and I would like to bring them to your attention.
  • All users must now follow the same health requirements for Cornell staff. This includes completing a vaccination status appointment prior to coming to Wilson lab, and wearing an approved (N95, KN95, or similar) mask while on campus. Please note that cloth masks are no longer suitable at Cornell.

  • We are starting construction on the High Magnetic Field beamline project, and the CHESS User office has moved! The User Office is now located in Wilson 147 on the first floor. Please follow the signs down the ramp from the parking lot. We appreciate your patience as we expand the lab in 2022.

  • CHESS is implementing DUO Two Factor Authentication for remote login. Two-factor authentication is critical to ensuring the security of your data and systems, and is our best defense against ransomware. For all CHESS users, this will require a one-time setup to enroll in Duo after you activate your CLASSE accounts.

This newsletter also contains recent science highlights at CHESS, ranging from additive manufacturing of titanium alloys to Fermi surface-mapping of a new family of superconducting materials. There is simply too much science to include in one director’s message. Please see below for these exciting findings.
Best wishes for 2022 and stay healthy,
Joel Brock, Director, CHESS (email Joel)
January 13th Town Hall Recording
CHESS hosted a virtual town hall for users on January 13th. The town hall included an update from CHESS Director Joel Brock, new covid policies & procedures, a new check-in process and location, a Duo two-step verification tutorial, and a Q&A session. You can view the recording at the link below.
Evolution of the Microstructure of Laser Powder Bed Fusion Ti-6Al-4V During Post-Build Heat Treatment
Ti64 components made via additive manufacturing typically exhibit poor structural properties arising from a non-equilibrium microstructure which forms under rapid cooling. The goal of the research reported here is to understand and design post-build heat treatments that can restore the desired structural properties to additively manufactured components.
Fermi Surface Mapping and Charge-Density-Wave Order in the Kagome Superconductor CsV3Sb5
Using a combination of synchrotron x-rays, quantum oscillations, and density functional theory, researchers have demonstrated a substantial reconstruction of the Fermi surface pockets associated with the vanadium orbitals due to the charge-density-wave.
High Pressure Structural Biology and Extreme Biophysics Workshop
Join us April 7-8, 2022 at Cornell for a unique NSF-funded in-person workshop on high-pressure structural biology! Following a day of lectures by internationally recognized experts in both HP-biology and biophysical instrumentation, we are offering an additional in-person hands-on training workshop (April 9-10) aimed at introducing novice users to the tool of high-pressure x-ray scattering. Send your students, bring your own samples, or use ours just to learn! 
Travel and lodging support is available.
X-ray technique offers new view inside active batteries
A new X-ray technique developed at Cornell offers an unprecedented look at the elaborate inner workings of batteries while they are in use – a breakthrough that is already yielding important findings for the development of next-generation energy storage.
AI powers autonomous materials discovery
SARA (the Scientific Autonomous Reasoning Agent) integrates robotic materials synthesis and characterization, along with a hierarchy of artificial intelligence and active learning methods, to efficiently reveal the structure of complex processing phase diagrams, making materials discovery vastly quicker.
Issue No. 91 2022.1.18