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.
*While we do not yet have the operational certainty to issue a formal Call for Proposals, we will be opening a Call for Expressions of Interest (EOI) in October 2025. This will help us plan for our return to operations as effectively as possible. 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 | Oct 8, 2025 | Oct 29, 2025 | Dec 8, 2025 | TBD |
| 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 |
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.