Deadline for APS Proposals and Beam Time Requests, Run 2020-1, Friday, October 25, 2019, 11:59pm Chicago Time. 

  • New General User Proposals (GUPs)
  • New Beam Time Requests for cycle 2020-1 (2/4/2020 – 4/28/2020) 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 October 25, 2019.

User Office support will not be available after 5:00 pm local time that day. If you feel you may need help during the submission process, please create your proposal as early as possible.

Guidance on the Proposal System: