The Advanced Photon Source
a U.S. Department of Energy Office of Science User Facility


June 15, 2020

On June 15, 2020, Argonne will start a phased, coordinated process to return to normal operations. The first phase of the transition – limited operations – will restart a select number of additional activities at the Advanced Photon Source (APS).

While onsite access remains prohibited for internal or external users for the majority of beamlines, additional limited user facility and CAT operations staff will be added to support remote research and facility R&D.

The APS user program is operational to support:

  • Research on SARS-CoV-2 or other COVID-19 related research that addresses the current pandemic.
  • Critical, proprietary pharmaceutical research.
  • Mail-in/remote access work for any research involving low-risk samples and most medium-risk samples (as defined on the ESAF form).
  • Limited in-situ research (set-up with one person, and ability to carry out majority of experiment safely remotely)

The health and safety of our employees, users, students, and visitors remains our top priority. As the public health situation improves, Argonne will eventually move to subsequent phases, which will bring more user activity back onsite. We will continue to monitor and adapt to changing conditions onsite, in the surrounding communities, in our state and nationwide. We will move forward, or back, across phases as needed as the situation evolves.


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