Speaker
Description
The SLAC National Accelerator Laboratory is home to LCLS-II, a world-class X-ray laser. The LCLS-II superconducting linac is supported by a cryogenic system comprising two identical subsystems, each featuring a warm helium compressor system, an 18 kW (at 4.5 K) coldbox, and a 5-stage 2 K cold compressor train with a cooling capacity of 4 kW at 2.0 K. Installed and commissioned between 2018 and 2022, the cryogenic system has encountered several power outages since beginning operation in 2022, presenting significant operational challenges. This paper highlights the most notable power outage incidents, their impact on the cryogenic infrastructure, and the measures undertaken to address these challenges. The lessons learned provide valuable insights into enhancing the resilience of complex cryogenic systems to power and other utility outages.
