Nestled 30 feet underground in Menlo Park, California, a half-mile-long stretch of tunnel is now colder than most of the universe. It houses a new superconducting particle accelerator, part of an upgrade project to the Linac Coherent Light Source (LCLS) X-ray free-electron laser at the Department of Energy's SLAC National Accelerator Laboratory.
Superconducting X-ray laser reaches operating temperature colder than outer space
- PhysOrg
- 10. 5 2022 (22:47)