LCLS History (VIDEO) DOE/SLAC National Accelerator Laboratory This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption Watch this video to learn how SLAC's Linac Coherent Light Source (LCLS) came to be, and how crews upgraded it over the past years to add an even more powerful superconducting X-ray laser, LCLS-II. Credit Olivier Bonin/SLAC National Accelerator Laboratory Usage Restrictions No restrictions. License Public Domain Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.