Research time allocated through the General User mechanism is via competitive peer review emphasizing the excellence of science where there is intent to publish scientific results. A call for proposals is issued twice per year for experimental beam time. View participating beamlines

The Call for Proposals for Cycle 29 (January to June 2019) has been cancelled. All projects that have had shifts cancelled due to this outage will have the same number of shifts scheduled during our next cycle. Please monitor this webpage for further updates.

  • Call Open

    Proposal Deadline


    Peer Review Meeting (week of)

    Results Announced (week of)

    Scheduling Period Begins

    Scheduling Period Ends


  • Jul 31/19

    Aug 28/19

    Oct 15/19

    Oct 21/19

    Nov 4/19

    Jan 1/20

    Jun 30/20


  • Jan 30/19

    Feb 27/19

    Apr 12/19

    Apr 22/19

    May 13/19

    Jul 1/19

    Dec 31/19


  • Jan 31/18

    Mar 7/18

    Apr 13/18

    Apr 23/18

    May 7/18

    Jul 1/18

    Dec 31/18


  • Jul 26/17

    Aug 30/17

    Oct 6/17

    Oct 23/17

    Nov 6/17

    Jan 1/18

    Jun 30/18


  • Jan 25/17

    Feb 22/17

    Apr 3/17

    Apr 23/17

    May 7/17

    Jul 1/17

    Dec 31/17


  • Jul 27/16

    Aug 31/16

    Oct 7/16

    Oct 24/16

    Nov 7/16

    Jan 1/17

    Jun 30/17


  • Jan 27/16

    Feb 24/16

    Apr 4/16

    Apr 20/16

    May 9/16

    Jul 1/16

    Dec 31/16


For information on current machine operations visit the CLS Operations Schedule.

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If you’re looking for information on how you can use CLS techniques in your research program, please contact us using this form.

Example queries may include: Feasibility around a potential experiment? A scientific problem we can help you solve? Is your question related to a specific technique? Do you want to know more about how to apply for beamtime?