A look inside SLAC’s FACET-II test facility, where scientists use electron beams to advance revolutionary technologies that could make future particle accelerators much smaller...
![A look inside SLAC’s FACET-II test facility](/sites/default/files/styles/card/public/2022-10/2022_1012_FACET_II_Brand_Photos_Orrell-18.jpg?h=8d9b89d0&itok=y8EHr1xo)
FACET-II uses the middle third of the lab’s 2-mile-long linear accelerator
![FACET-II](/sites/default/files/styles/card/public/facetII_facility_highres_0.jpg?h=131411b1&itok=dXPuz31U)
Over the course of two years, crews at SLAC installed a state-of-the-art high brightness electron source and new electron bunch compressor systems for producing...
![FACET-II upgrade](/sites/default/files/styles/card/public/2020_0925_FACET_II_Upgrade_Orrell-123%20%281%29.jpg?h=2992ba0a&itok=P3KTjNup)
FACET-II is the only facility in the world capable of providing high-energy electron and positron beams for researching a vast array of revolutionary accelerator...
![FACET-II](/sites/default/files/styles/card/public/facetII_pr_la_final.jpg?h=1350c8e5&itok=mgWBRlWD)
![](/sites/default/files/styles/card/public/Header_Accelerator_automation_061319.jpg?h=8abcec71&itok=HPteoCCl)
![Scientists around the world are testing ways to further boost the power of particle accelerators while drastically shrinking their size.](/sites/default/files/styles/card/public/Header_Plasma_acceleration.jpg?h=8abcec71&itok=PTNJnen7)
![Chi-Chang Kao at Stanford Faculty Senate meeting](/sites/default/files/styles/card/public/images/facsen_7430-960x640.jpg?h=b3660f0d&itok=4esYAan5)