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An Office of Science User Facility

​​About LCLS

Like a high-speed camera with an incredibly bright flash...


The unprecedented brightness of Linac Coherent Light Source (LCLS) X-rays enables completely new areas of science, opening frontiers in imaging single nanoscale particles and in understanding chemistry on the natural timescales of reactions. These scientific advancements could lead to new and more effective drugs to fight disease, components for next-generation computers, new aircraft materials that are more damage-resistant, and highly customized chemical reactions that produces clean and renewable sources of energy.

» Read more about LCLS​​​​​​​​​​​​

LCLS Videos


Researchers working at the Department of Energy’s SLAC National Accelerator Laboratory have captured the first X-ray portraits of living bacteria.
» Read story

» More videos on YouTube
» More animations​​

LCLS Images

The MEC hutch of SLAC's Far Experiment Hall 

» More images on Flickr​​


With X-ray pulses a billion times brighter than predecessor X-ray sources that last for just femtoseconds, or million-billionths of a second, LCLS can measure the properties ultrafast processes at the scale of atoms and molecules.

» Read more

Five Years of Scientific Discoveries with SLAC's LCLS

5 year infographic of LCLS» Read more​​

SLAC SLAC National Accelerator Laboratory, Menlo Park, CA
Operated by Stanford University for the U.S. Dept. of Energy