Enhancement of Electron Energy to the Multi-GeV Regime by a Dual-Stage Laser-Wakefield Accelerator Pumped by Petawatt Laser Pulses
Enhancement of Electron Energy to the Multi-GeV Regime by a Dual-Stage Laser-Wakefield Accelerator Pumped by Petawatt Laser Pulses
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DOI：
10.1103/physrevlett.111.165002
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发表时间：
2013-10-15
影响因子：
8.6
通讯作者：
Lee, Jongmin
中科院分区：
文献类型：
--
作者：
Kim, Hyung Taek;Pae, Ki Hong;Lee, Jongmin
激光尾流场加速提供了一个紧凑的电子加速器的承诺，用于产生多GeV的电子束，使用由强激光脉冲引起的巨大的场梯度，相比于传统的射频加速器。然而，来自激光尾场加速器的电子束的能量和质量受到驱动激光脉冲的功率和靶介质中的相互作用性质的限制。近年来，随着激光技术的发展，人们已经实现了拍瓦级飞秒激光器，这为研究激光尾波场加速提供了新的手段。在这里，我们提出了一个显着增加激光驱动的电子能量的多GeV的水平，利用30 fs，1 PW激光系统。特别是，一个双阶段的激光尾场加速计划（注入器和加速器计划）被施加到提升电子能量超过3 GeV与一个单一的PW激光脉冲。三维粒子模拟证实了PW激光脉冲驱动的双级激光尾流场加速器产生多GeV电子。
Laser-wakefield acceleration offers the promise of a compact electron accelerator for generating a multi-GeV electron beam using the huge field gradient induced by an intense laser pulse, compared to conventional rf accelerators. However, the energy and quality of the electron beam from the laser-wakefield accelerator have been limited by the power of the driving laser pulses and interaction properties in the target medium. Recent progress in laser technology has resulted in the realization of a petawatt (PW) femtosecond laser, which offers new capabilities for research on laser-wakefield acceleration. Here, we present a significant increase in laser-driven electron energy to the multi-GeV level by utilizing a 30-fs, 1-PW laser system. In particular, a dual-stage laser-wakefield acceleration scheme (injector and accelerator scheme) was applied to boost electron energies to over 3 GeV with a single PW laser pulse. Three-dimensional particle-in-cell simulations corroborate the multi-GeV electron generation from the dual-stage laser-wakefield accelerator driven by PW laser pulses.