LCLS-II Cryomodule (IMAGE) DOE/SLAC National Accelerator Laboratory Caption A cross section of the LCLS-II accelerator showing where liquid and gaseous helium flow in and out of the system. Credit Greg Stewart/SLAC National Accelerator Laboratory Usage Restrictions Please credit SLAC National Accelerator Laboratory License Original content 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.