Two-Screen Method for Determining Electron Beam Energy and Deflection from Laser Wakefield Acceleration
Two-Screen Method for Determining Electron Beam Energy and Deflection from Laser Wakefield Acceleration
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激光尾场加速确定电子束能量和偏转的两屏法
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
C. Joshi
中科院分区：
文献类型：
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作者：
B. Pollock;J. Ross;G. Tynan;L. Divol;S. Glenzer;V. Leurent;J. Palastro;J. Ralph;D. Froula;C. Clayton;K. Marsh;A. Pak;T. Wang;C. Joshi
激光尾波场加速（LWFA）实验已在劳伦斯利弗莫尔国家实验室的木星激光设施进行。为了明确确定等离子体出口处的输出电子束能量和偏转角，我们采用了两屏电子能谱仪。该系统由偶极磁铁和两个图像板组成。通过测量每块板上电子束与激光轴的偏差，通过相对论运动方程确定等离子体出口处的能量和偏转角。
Laser Wakef eld Acceleration (LWFA) experiments have been performed at the Jupiter Laser Facility, Lawrence Livermore National Laboratory. In order to unambiguously determine the output electron beam energy and def ection angle at the plasma exit, we have implemented a two-screen electron spectrometer. This system is comprised of a dipole magnet followed by two image plates. By measuring the electron beam deviation from the laser axis on each plate, both the energy and def ection angle at the plasma exit are determined through the relativistic equation of motion.