Information for CLS Users
The CLS User Portal is your primary source of information for all things related to your CLS Project(s). Log in to manage your experiment, from proposal submission and safety reviews to team membership and samples to reporting your publications. To complete CLS training required for your beamtime, log into the Training Portal with the same account information you use to access the User Portal.
User Login User Portal Guide Training Login
Do not hesitate to contact the User Services Office at clsuo@lightsource.ca with any questions or concerns.
Call for Proposals
The Canadian Light Source (CLS) conducts a Call for Proposals twice per year, accepting proposals for peer-reviewed access to beamtime in the upcoming cycle.
Note that due to delays in our return to operations following the installation of a new linear accelerator (LINAC), we regretfully will not open a Call for Proposals, as we normally do in January, for the beamtime from July to December 2025. The scheduling period for Cycle 40 has been extended to include the entire 2025 calendar year. Watch our website for more information about the status of the LINAC upgrade.
| Cycle | Scheduling Period | Call Open | Call Close | PRC Meeting (Week of) | Results Announced (Week of) |
|---|---|---|---|---|---|
| 41 | Jan-June 2026 | July 23, 2025 | Aug 20, 2025 | Oct 20, 2025 | Nov 10, 2025 |
| 40 | Jan-Dec 2025 | July 24, 2024 | Aug 21, 2024 | Oct 21, 2024 | Nov 18, 2024 |
| 39 | Jan-Dec 2024 | July 26, 2023 | Aug 23, 2023 | Oct 23, 2023 | Nov 13, 2023 |
| 38 | July-Dec 2023 | Jan 25, 2023 | Feb 22, 2023 | April 24, 2023 | May 8, 2023 |
| 37 | Jan-June 2023 | July 27, 2022 | Aug 24, 2022 | Oct 24, 2022 | Nov 7, 2022 |
Requirements for Access
Research Security
Learn about how the CLS supports and complies with the Government of Canada's Policy on Sensitive Technology Research and Affiliations of Concern (STRAC), and what that means for your research at the CLS.
User Code of Conduct
As a condition of access to Canadian Light Source facilities, all CLS users must comply with the CLS User Code of Conduct.