Optical plasma torch electron bunch generation in plasma wakefield accelerators
Optical plasma torch electron bunch generation in plasma wakefield accelerators
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DOI：
10.1103/physrevstab.18.081304
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发表时间：
2015-08
影响因子：
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通讯作者：
G. Wittig;O. Karger;A. Knetsch;Y. Xi;A. Deng;J. Rosenzweig;D. Bruhwiler;J. Smith;G. Manahan;Z. Sheng;D. Jaroszynski;B. Hidding
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文献类型：
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作者：
G. Wittig;O. Karger;A. Knetsch;Y. Xi;A. Deng;J. Rosenzweig;D. Bruhwiler;J. Smith;G. Manahan;Z. Sheng;D. Jaroszynski;B. Hidding
介绍了一种在等离子体韦克菲尔德加速器中产生见证电子束团的新方法。在等离子体波到达之前，准稳态等离子体区域被聚焦的激光脉冲点燃。这种局部的、可成形的光学等离子体炬在电子驱动器聚束通过期间引起等离子体喷出的强烈变形，导致等离子体电子轨迹的集体改变和受控的注入。当与流体动力学控制的气体密度过渡注入方法相比时，这种光学操纵注入更灵活且更快。
A novel, flexible method of witness electron bunch generation in plasma wakefield accelerators is described. A quasistationary plasma region is ignited by a focused laser pulse prior to the arrival of the plasma wave. This localized, shapeable optical plasma torch causes a strong distortion of the plasma blowout during passage of the electron driver bunch, leading to collective alteration of plasma electron trajectories and to controlled injection. This optically steered injection is more flexible and faster when compared to hydrodynamically controlled gas density transition injection methods.