LCLS call for proposals for period Sep. – Dec. 2018 (Run 17) deadline 8 February 2018

By achan
December 19, 2017

Call for Proposals Linac Coherent Light Source -
SLAC National Accelerator Laboratory
Due February 8, 2018

Proposals for beam time at the Linac Coherent Light Source at SLAC
will be accepted via the web-based proposal system
until 4:00 p.m. PST Thursday, February 8, 2018.
This call is for experiments to run from September through December 2018.

For full details of the call, please visit:

We are pleased to announce an additional period of experimental time (“Run 17”) prior to the 1 year shutdown for LCLS-II installation. This will be the final Run for the Soft-X-Ray instruments in their current arrangement. This is a relatively short Run that will be conducted alongside substantial preparation work for LCLS-II, and so we ask for proposals that can utilize this limited amount of beamtime in the most impactful and effective way.

Please note the following important information:

(1) Standard Configurations

Since Run 13, LCLS has been running in a new mode of operation, called Standard Configuration Beam Time for some fraction of each Run. Selected areas will operate in a contiguous block of time during which the instrument will be in a Standard Configuration. The intent is to reduce the amount of time that is taken each run tearing down, setting up, and testing the same configurations at different times throughout the run. The reduced amount of setup and test time has resulted in significantly more users and experiments being allocated beam time. If you feel your experiment is able to operate in a Standard Configuration for one of the instruments, please indicate this in your proposal and follow the directions provided. See the Standard Configurations page for more details.

In addition, LCLS is encouraging "Data Collection" proposals which are intended to be short (typically one to two 12-hour shifts), where it is assumed that a suitable standard configuration is ready to go and requires no alignment time, and a single shift is expected to be sufficient to produce a full data set suitable for publication. These "Data Collection" proposals are expected to be particularly suitable, but not limited, to protein crystallography. "Data Collection" proposals should be highlighted as such in the proposal title and are limited to using existing standard configurations.

(2) A Virtual LCLS User Meeting will be held at 9am PST on January 18, 2018.

A webcast meeting will be held to better inform the users about the developments at LCLS before the upcoming LCLS proposal deadline on February 8th. LCLS staff will inform the community about the latest capabilities and be available for Q&A. Information on how to connect will be sent separately.

(3) SLAC Computer System Outage

Please note that maintenance work on SLAC computer systems is scheduled to take place between December 26 and 31, 2017. During this period, the User Portal will be unavailable and you will not able to submit your proposal.

Experimental stations available to users:

For more detailed information on LCLS performance, please contact the respective instrument e-mail address listed above, and see the FAQ at:
For more general information about LCLS, please visit:

I look forward to seeing your proposals!

Many thanks,|
Mike Dunne
Director, LCLS