Charles Arrowsmith
(University of Rochester Laboratory for Laser Energetics)
Laser wakefield acceleration (LWFA) is a highly promising route to realizing compact particle accelerators and radiation sources, utilizing electric fields >100 GV/m to produce multi-GeV electron beams with percent-scale energy spread and sub-mrad divergence. Until now, the maximum producible electron energy has been limited by dephasing, where electrons outrun the accelerating phase of the wakefield and stop gaining energy. Current state-of-the-art accelerators achieve 10 GeV energies by using a reduced plasma electron density to increase the group velocity of the drive pulse. But this has several drawbacks, including a reduction of the accelerating field. Using a flying focus—a technique which allows the velocity of the peak laser intensity to be precisely controlled—we show that dephasing can be eliminated by driving a wakefield at the vacuum speed of light. Scaling this approach could enable substantially higher energy electrons to be produced while maintaining >100 GV/m accelerating gradients in a compact accelerator with small-f/# optics. Using near-future 20 PW laser systems, 100 GeV electron energies are predicted. In this talk, I will present recent experimental results demonstrating electron acceleration over multiple dephasing lengths and discuss some of the challenges involved in scaling DLWFA to the multi-GeV regime.
Charles Arrowsmith
(University of Rochester Laboratory for Laser Energetics)
Andrew Martin
(University of Rochester Laboratory for Laser Energetics)
Anthony Raymond
(University of Rochester Laboratory for Laser Energetics)
Benjamin Webb
(University of Rochester Laboratory for Laser Energetics)
Chad Mileham
(University of Rochester Laboratory for Laser Energetics)
Cheonha Jeon
(University of Rochester Laboratory for Laser Energetics)
Christophe Dorrer
(University of Rochester Laboratory for Laser Energetics)
Dustin Froula
(LLE)
Hans Rinderknecht
(LLE)
Ildar A. Begishev
(University of Rochester Laboratory for Laser Energetics)
Ms
Isabelle A. LaBelle
(University of Rochester Laboratory for Laser Energetics)
Isabelle A. Settle
(University of Rochester Laboratory for Laser Energetics)
Jake Bromage
(University of Rochester Laboratory for Laser Energetics)
Jeremy Pigeon
(Laboratory for Laser Energetics)
Jessica Shaw
(Laboratory for Laser Energetics)
John Palastro
(Laboratory for Laser Energetics)
John Szczepanski
(University of Rochester Laboratory for Laser Energetics)
Joshua Kendrick
(University of Rochester Laboratory for Laser Energetics)
Kyle G. Miller
(Laboratory for Laser Energetics)
Lavonne Mack
Manfred Virgil Ambat
(University of Rochester Laboratory for Laser Energetics)
Mark Romanofsky
(University of Rochester Laboratory for Laser Energetics)
Michael Spilatro
(University of Rochester Laboratory for Laser Energetics)
Noah Dauphin
(University of Rochester Laboratory for Laser Energetics)
Richard G. Roides
(University of Rochester Laboratory for Laser Energetics)
Sara Bucht
(University of Rochester Laboratory for Laser Energetics)
Seung-Whan Bahk
(University of Rochester Laboratory for Laser Energetics)
Shao Qin
(University of Rochester Laboratory for Laser Energetics)
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