Linac Coherent Light Source

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

Proposal Type Instruments Proposal Deadline

February 8, 2018 (4PM PACIFIC)

Protein Crystal Screening CXI, XPP CLOSED January 19, 2017 (4PM PACIFIC)
Optical-Laser-Only MEC (Check back later)

In Run 13, LCLS began a new mode of operations called Standard Configuration Beam Time. The LCLS Science Departments (SXD, HXR, CXI, and MEC) will operate for ~25% of the run (possibly more if user demand is high) in a contiguous block of time during which the instruments will be in a Standard Configuration. In future runs, the Standard Configuration will change, allowing each instrument to rotate through the Standard Configurations that have evolved over the first five years of LCLS operations. The specifics of each Standard Configuration will be defined in the call for new proposals, and the experimental parameters that can be varied will be clearly described. The intent of this change is to reduce the amount of time that is wasted each run tearing down, setting up, and testing the same configurations at different times throughout the run. More importantly, we expect the reduced amount of setup and test time in these configurations will result in significantly more users and experiments to get beam time. Our SAC, PRP, and our Funding Agency have all endorsed this change in operations and strongly endorse the goals of higher efficiency and more LCLS user throughput.

If you are submitting a proposal for Standard Configuration Beam Time, please indicate this in the proposal and follow the directions in the call for proposals. The PRP will review all proposals with the goals of this new mode of operation in mind and will advise LCLS on each proposal's scientific merit accordingly. The remaining ~75% of the beam time will be run in our normal operational mode with the high level of flexibility and user support for which LCLS has become known.

For approved proposals, alert us in advance who will participate in scheduled experiments

Stanford Synchrotron Radiation Lightsource

We encourage users to set reminders for these annual deadlines in their calendars. Deadline reminders are also included in the SSRL Newsletter.

STEP 1:  Submit New Proposals or Extension Requests
Click for SSRL Proposal & Scheduling Guidelines
Due Dates
NEW DEADLINES Submit new X-ray/VUV proposals or extension requests by MAY 1, AUGUST 1, NOVEMBER 1.  
X-ray /   VUV Proposals  
Beam time eligibility beginning in October/November May 1
Beam time eligibility beginning in January/February August 1
Beam time eligibility beginning in April/May November 1
Macromolecular Crystallography Proposals  
Beam time eligibility beginning November July 1
Beam time eligibility beginning March December 1
Beam time eligibility beginning June April 1
Other Proposal Types  
Letter of Intent Any Tiime
Rapid Access (X-ray Absorption Spectroscopy, Imaging, Scattering/Diffraction) Any Time
Rapid Access (BLs 7-1, 11-1, 12-2, 14-1 Crystallography) Any Time
Rapid Access(BL4-2 Bio SAXS) Learn more Any Time
STEP 2:  Submit Beam Time Requests
Click for More Information on Requesting SSRL Beam Time
Due Dates
Request X-ray / VUV Beam Lines  
October/November - January/February scheduling August 8
January/February - April/May scheduling November 1
May - July scheduling February 1
Request Macromolecular Crystallography Beam Lines  
November - February scheduling September 15
March - May scheduling January 18
June - July scheduling April 18

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