Schematic of Trojan Horse injection experiment performed by the UCLA Particle Beam Physics Lab

An international team co-led by the UCLA Particle Beam Physics Laboratory (Prof. James Rosenzweig, director)  has demonstrated a new type of electron source that has the potential to create beams of unprecedented brightness, using laser ionization within relativistic plasma waves.

This result has been published in Nature Physics on August 12, 2019, with UCLA post-doc Dr. Aihua Deng (now of the Zhejiang University of Technology); the article can be read here.

In this approach, the time scale for creation of beams by laser excitation descends to the few femtosecond level, and the unprecedented size of the acceleration fields inside of the plasma wave permit the preservation of electron pulse length and small emission temperature. This experiment serves as a proof-of-principle of the “Trojan Horse” injection scheme, which opens the door for electron sources capable of use in TeV-class linear colliders and compact X-ray free-electron lasers.

Next step experiments will be performed by this collaboration at the FACET II facility at the SLAC National Accelerator Laboratory, beginning in 2020.

To read more, see the DOE press release