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

Deadline for APS Proposals and Beam Time Requests: Cycle 2018-3

Deadline for APS Proposals and Beam-Time Requests for Cycle 2018-3
Friday, July 6, 2018, 11:59 PM Chicago time

  • New General User Proposals (GUPs)
  • New Beam-Time Requests for cycle 2018-3 (10/2/2018 - 12/17/2018) on existing active proposals   
  • Partner user proposals (PUPs)
  • CAT Member Proposals
  • APS Beamline Staff Proposals
  • CAT Beamline Staff Proposals

The GUP system (  will accept proposals and beam time requests until 11:59 pm (Chicago time) on July 6, 2018. However, User Office support will not be available after 5:00 pm that day. If you feel you may need help during the submission process, please create your proposal as early as possible.

For questions about the GUP system or the proposal submission process, please contact

For guidance on the Proposal System, see

For general inquiries, please feel free to contact the User Office (630-252-9090,


Published Date