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

Call for APS Run Cycle 2019-3 Proposals - Due July 5

Start Date

Deadline for APS Proposals and Beam Time Requests
Cycle 2019-3
Friday, July 5, 2019, 11:59 PM Chicago time

  • New General User Proposals (GUPs)
  • New Beam Time Requests for cycle 2019-3 (10/1/2019 - 12/17/2019) 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 5, 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.

Questions about the proposal submission process:

Guidance on the Proposal System:

General inquiries: Contact the User Office (630-252-9090,


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