Generation of electron high energy beams with a ring-like structure by a dual stage laser wakefield accelerator
Generation of electron high energy beams with a ring-like structure by a dual stage laser wakefield accelerator
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双级激光尾场加速器产生环状结构电子高能束
DOI：
10.1117/12.2522781
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Spesyvtsev R
中科院分区：
文献类型：
--
作者：
Spesyvtsev R
传统的激光尾场加速器（LWFA）产生高亮度、准单能、具有类高斯空间和角分布的电子束。在目前的工作中，我们研究的超相对论光束的产生与环状结构的LWFA的井喷制度使用双级加速器。一个密度下降斜坡触发注入后的第一阶段，并用于产生环状电子光谱在300 - 600 MeV的能量范围。这些定义良好的环形束与轴上的高能电子束同时被观察到，发散度为几毫弧度。环具有准单能能能谱，RMS扩展估计小于5%。粒子在细胞模拟证实，离轴注入提供了必要的初始横向动量进行不同的电子感应加速器振荡等离子体气泡在其加速过程中的电子。
The laser wake-field accelerator (LWFA) traditionally produces high brightness, quasi-monoenergetic electron beams with Gaussian-like spatial and angular distributions. In the present work we investigate the generation of ultra-relativistic beams with ring-like structures in the blowout regime of the LWFA using a dual stage accelerator. A density down-ramp triggers injection after the first stage and is used to produce ring-like electron spectra in the 300 - 600 MeV energy range. These well defined, annular beams are observed simultaneously with the on-axis, high energy electron beams, with a divergence of a few milliradians. The rings have quasi-monoenergetic energy spectra with an RMS spread estimated to be less than 5%. Particle-in-cell simulations confirm that off-axis injection provides the electrons with the initial transverse momentum necessary to undertake distinct betatron oscillations within the plasma bubble during their acceleration process.
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影响因子：
8.6
作者：
Brunetti, E.;Shanks, R. P.;Jaroszynski, D. A.
通讯作者：
Jaroszynski, D. A.
影响因子：
8.6
作者：
T. Matsuoka;C. McGuffey;P. Cummings;Y. Horovitz;F. Dollar;V. Chvykov;G. Kalintchenko;P. Rousseau;V. Yanovsky;S. Bulanov;A. Thomas;A. Maksimchuk;K. Krushelnick
通讯作者：
T. Matsuoka;C. McGuffey;P. Cummings;Y. Horovitz;F. Dollar;V. Chvykov;G. Kalintchenko;P. Rousseau;V. Yanovsky;S. Bulanov;A. Thomas;A. Maksimchuk;K. Krushelnick
利用激光驱动加速器对相对论电子进行高分辨率单次发射度测量
影响因子：
3.3
作者：
G. Manahan;E. Brunetti;R. Shanks;M. Islam;B. Ersfeld;M. Anania;S. Cipiccia;R. Issac;G. Raj;G. Vieux;G. Welsh;S. Wiggins;D. Jaroszynski
通讯作者：
D. Jaroszynski
影响因子：
64.8
作者：
Faure, J;Glinec, Y;Malka, V
通讯作者：
Malka, V
影响因子：
64.8
作者：
Mangles, SPD;Murphy, CD;Krushelnick, K
通讯作者：
Krushelnick, K