Meter-scale plasma waveguides for multi-GeV laser wakefield acceleration
Meter-scale plasma waveguides for multi-GeV laser wakefield acceleration
复制标题
DOI：
10.1063/5.0097214
复制
发表时间：
2022-07
影响因子：
2.2
通讯作者：
J. Shrock;B. Miao;L. Feder;H. Milchberg
中科院分区：
文献类型：
--
作者：
J. Shrock;B. Miao;L. Feder;H. Milchberg
我们目前的结果，从两个新的技术产生米级，低密度（[公式：见文字]轴）等离子体波导，“双贝塞尔”技术，和“自波导”技术。这种密度和长度范围的等离子体波导需要一个10 GeV的激光尾波场韦克菲尔德加速器模块，为未来的10 GeV轻子对撞机的关键阶段演示。这两种技术都需要使用高质量的超短脉冲贝塞尔光束，通过光场电离在米级超音速气体射流中有效且均匀地吸收氢气。我们回顾了这两种技术，描述了我们的米级气体射流，并提出了一种新的方法来校正贝塞尔光束的光学像差。最后，我们简要介绍了最近的实验结果，采用我们的技术之一，证明准单能加速的20厘米长，低密度等离子体波导中的15GeV电子束。
We present results from two new techniques for the generation of meter-scale, low density ([Formula: see text] on axis) plasma waveguides, the “two-Bessel” technique, and the “self-waveguiding” technique. Plasma waveguides of this density and length range are needed for demonstration of a ∼10 GeV laser wakefield accelerator module, key for future staging for a ∼TeV lepton collider. Both techniques require the use of high quality ultrashort pulse Bessel beams to efficiently and uniformly ionize hydrogen gas in meter-scale supersonic gas jets via optical field ionization. We review these two techniques, describe our meter-scale gas jets, and present a new method for correction of optical aberrations in Bessel beams. Finally, we briefly present results from recent experiments employing one of our techniques, demonstrating quasi-monoenergetic acceleration of ∼5 GeV electron bunches in 20 cm long, low density plasma waveguides.