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World's First Hard X-ray Free-electron Laser

The Linac Coherent Light Source at SLAC takes X-ray snapshots of atoms and molecules at work, revealing fundamental processes in materials, technology and living things. LCLS is an Office of Science User Facility operated for the U.S. Department of Energy by Stanford University.

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Latest Proposal Schedule

A call for proposals is generally made twice per year approximately six months before the run is scheduled to begin.

Mode of AccessRun CycleProposal Call StatusDeadlineCycle BeginsCycle Ends
Regular User ProposalLCLS 24Proposals under review11 Sep 2024Mar 2025Jul 2025
Protein Crystal Screening (PCS)LCLS 24Accepting proposals via UPS08 Oct 2024Mar 2025Jul 2025
Rapid AccessLCLS 23Accepting proposals via SLAC User PortalFeb 2025Aug 2024Feb 2025
MeV-UED Regular User ProposalUED 5Proposals under review Oct 2024May 2025
Scientific Campaign ProposalOngoingExperiments scheduled   

Calls For Proposals are posted on the LCLS Announcements, and e-mailed to the LCLS User Organization e-mail list (subscribe to lclsuo).

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