Lawrence Berkeley National Lab physicists using one of the most powerful lasers in the world have accelerated electrons to the highest energies ever recorded from a compact accelerator – 4.25 billion electron volts (giga-electron volts or GeV). A 9 cm-long capillary discharge waveguide used in BELLA experiments to generate 4.25-GeV electron beam. Image credit: Roy Kaltschmidt. The record-breaking energies were achieved with the help of the Berkeley...
