Beam tuning and bunch length measurement in the bunch compression operation at the cERL
Beam tuning and bunch length measurement in the bunch compression operation at the cERL
复制标题
cERL 束团压缩操作中的光束调谐和束团长度测量
DOI：
10.1016/j.nima.2017.09.027
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
A. Ueda
中科院分区：
文献类型：
--
作者：
Y. Honda;M. Shimada;T. Miyajima;T. Hotei;N. Nakamura;R. Kato;T. Obina;R. Takai;K. Harada;A. Ueda
一种广泛使用的技术是通过操纵具有有限纵向色散的纵向相空间分布来实现短束束。该技术被应用于能量回收直线加速器的紧凑型测试加速器中，用于压缩返回环处的束团长度。研制了一套利用相干跃迁辐射进行束流调谐和束团长度估算的诊断系统。通过扫描束流参数，实验找到了束团压缩的最佳条件。当束团电荷为2pC时，得到了250±50ps的均方根束团长度。这一结果证实了未来能量回收加速器(ERL)束团压缩操作的设计和调试过程。
Realization of a short bunch beam by manipulating the longitudinal phase space distribution with a finite longitudinal dispersion following an off-crest acceleration is a widely used technique. The technique was applied in a compact test accelerator of an energy-recovery linac scheme for compressing the bunch length at the return loop. A diagnostic system utilizing coherent transition radiation was developed for the beam tuning and for estimating the bunch length. By scanning the beam parameters, we experimentally found the best condition for the bunch compression. The RMS bunch length of 250±50 fs was obtained at a bunch charge of 2 pC. This result confirmed the design and the tuning procedure of the bunch compression operation for the future energy-recovery linac (ERL).