卫星电力传输FEL中的束束压缩器和去压缩器

W. Wan, A. Zholents
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引用次数: 0

摘要

LBNL正在设计一个平均功率为200千瓦的FEL,用于卫星功率传输。它利用/spl sim/100 MeV电子的辐射,峰值电流为/spl sim/200 A。为了获得所需的峰值电流,线性加速器输出的5毫米长的电子束被压缩到1毫米。此外,压缩束在整个束长上具有均匀的纵向密度分布对FEL操作非常重要。经过自由电子束流后,电子束返回直线加速器进行减速。由于电子束在自由电子激光器的辐射过程中获得约6%的能量扩散,因此在自由电子激光器和直线加速器之间使用束减压器将电子束扩展回其原始长度并减小能量扩散。本文给出了串式压缩机和串式减压机的设计和分析。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Bunch compressor and de-compressor in the FEL for satellite power beaming
A FEL of average power 200 kW is being designed at the LBNL for satellite power beaming. It utilizes the radiation of /spl sim/100 MeV electrons with /spl sim/200 A peak current. In order to obtain the desired peak current, the 5 mm long electron bunches delivered by a linear accelerator are compressed to 1 mm. Furthermore, it is important for the FEL operations that the compressed bunches have a uniform longitudinal density distribution over the entire bunch length. After the FEL, the electron beam is returned to the linear accelerator for deceleration. Since the electron beam acquires approximately 6% energy spread during radiation in the FEL, bunch de-compressor is used between the FEL and the linac to expand the electron bunches back to its original length and to reduce the energy spread. In the paper we present the design and analysis of the bunch compressor and the bunch de-compressor that perform the needed functions.
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