Laser drill leads to world record in plasma acceleration

Laser drill leads to world record in plasma acceleration

Novel concept marks milestone for future applications of compact particle accelerators

Using a laser to drill through a plasma, scientists working at the Lawrence Berkeley National Laboratory in the US have set a new world record for plasma accelerators: In a plasma tube only 20 centimetres long, the scientists accelerated electrons to an energy of 7.8 billion electron volts (GeV), a value for which today's most advanced conventional particle accelerators require hundreds of metres.

The team led by Wim Leemans, then head of the Berkeley Lab Laser Accelerator (BELLA) Center and now Accelerator Director at DESY, presents the novel concept in the journal Physical Review Letters. A plasma is a gas in which the molecules have been stripped of their electrons, creating a mix of positively charged molecules and negatively charged electrons.

ELI Beamlines cooperated on preparation of this experiment with the Lawrence Berkeley National Laboratory and the Keldysh Institute of Applied Mathematics in Russia. “The results of the experiments and the extensive simulations about generating well prepared longer plasma guiding structures for high energy electron acceleration we will be using in our facility for the benefit of users to providing stable short pulse electron beams at repetition rates defined by the L3-HAPLS laser system,” says Georg Korn, the scientific director of ELI Beamlines.

The whole press release find and read here.