General User Proposal Call is open through:

June 24, 2026, 14:00/2:00 p.m. (Chicago time)

NEW! Changes to access for foreign nationals: Early registration advised

DOSIMETRY IS REQUIRED FOR ACCESS TO THE EXPERIMENT HALL FLOOR: Dosimetry Information for APS

Key Resources for Users:

• NEW! Dining Options for Facility Users: resource for food amenities on campus
• User Checklist: a step-by-step guide
• User Access to APS: important post-Upgrade information
• Proposal Calls: Current Status
• PUBLICATION UPDATE: Research resulting in publication must acknowledge the APS and be reported in the APS Publications Database. Digital object identifiers (DOIs) must now be included. DOIs can be found in your APS User Portal.
• The APS Users' Executive Committee (UEC) is an elected advocacy group for the APS user community. Reach out to your advocates with any questions, concerns, feedback, or ideas.
• NOTIFICATION TO USERS on publicly disseminated user data

APS User Office, Bldg. 401, Room B1100
Hours: 8:00 a.m. - 4:30 p.m., Monday-Friday