High charge laser acceleration of electrons to 10 GeV

作者：E. Rockafellow, J. E. Shrock, B. Miao, A. Sloss, M. Le, S. W. Hancock, S. Zahedpour, R. Hollinger, Shoujun Wang, James King, Ping Zhang, Jiří Šišma, G. Grittani, R. Versaci, D. F. Gordon, G. J. Williams, Brendan A. Reagan, J. J. Rocca, H. M. Milchberg · 发表于：Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment · 年份：2025 · DOI：10.1016/j.nima.2025.170586 · 被引用次数：4 · 研究领域：Laser-Plasma Interactions and Diagnostics、Laser-induced spectroscopy and plasma、Laser Material Processing Techniques

Recent demonstrations of all-optical multi-GeV laser wakefield acceleration (LWFA) have been enabled by University of Maryland's development of low-density, meter scale plasma waveguides generated in greatly extended supersonic gas jets. We present a review of our recent LWFA efforts, including experiments and simulations to benchmark plasma waveguide generation, a new 3-stage model for relativistic pulse propagation in meter-scale waveguides, and recent LWFA experiments using waveguides up to 30 cm long. These experiments demonstrate sub-milliradian divergence electron bunches with integrated charge >1 nC above 1 GeV, and energy spectra including ≲ 10 pC features above 9 GeV with tails extending to slightly beyond 10 GeV, representing a laser to electron conversion efficiency of at least ∼30%.