Highest-Energy Beam Ever Delivered at Jefferson Lab
he Continuous Electron Beam Accelerator Facility (CEBAF) at
the U.S. Department of Energy's Thomas Jefferson National Accelerator Facility
has achieved the final two accelerator commissioning milestones needed for
approval to start experimental operations following its first major upgrade.
In the early hours of May 7, the machine delivered its
highest-energy beams ever, 10.5 billion electron-volts (10.5 GeV) through the
entire accelerator and up to the start of the beamline for its newest
experimental complex, Hall D. Then, in the last minutes of the day on May 7,
the machine delivered beam, for the first time, into Hall D.