![This is a representation of a particle beam traveling through an accelerator.](/sites/default/files/styles/card/public/2023-04/l4a_beamshaping_final%20%281%29.jpg?h=5d199650&itok=D-hWT9rH)
Photograph
At left is physicist Dorian Bohler. Staff gathered in Bldg 52’s main control room on October 6, 2022 in anticipating seeing the first electrons...
![At left is physicist Dorian Bohler. Staff gathered in Bldg 52's main control room on October 6, 2022 in anticipating seeing the first electrons from LCLS-II.](/sites/default/files/styles/card/public/2022-10/2022_1006_Waiting_LCLS_II_First_Electrons_Bldg_52_Control_Room_McCulloch-4.jpg?h=7b753ac8&itok=lLlT4ANT)
Illustration
Scientists use a series of magnets to transform an electron bunch into a narrow current spike which then produces a very intense attosecond X-ray...
![XLEAP illustration](/sites/default/files/styles/card/public/2022-09/xleap_leadart_final_full_0.jpg?h=2213e3e4&itok=RE6Pc5l8)
Illustration
A half-mile-long stretch of tunnel in Menlo Park, California is now colder than most of the universe.
![LCLS-II cooldown](/sites/default/files/styles/card/public/lclsII_cooldown_pr_la_final.jpg?h=5a5fc591&itok=CDVMK27F)
![SLAC's Tien Tan, left, and Kathleen Ratcliffe pose for a portrait outside a SLAC building.](/sites/default/files/styles/card/public/2021_1115_Kathleen_Ratcliffe_Tien_Tan_Portraits_Orrell-10%20web%20version.jpeg?h=72b1671e&itok=SBr43KPI)