褶皱管束流能量稳定器(英文)

输出脉冲稳定性的需求对驱动自由电子激光产生的电子直线加速器装置束流稳定性提出了严格的要求,包括电子束平均能量、峰值流强、束团到达时间抖动和横向位置抖动等参数。基于正在建设的大连相干光源用户装置,探讨了最近提出的褶皱管用作能量稳定器的可行性。采用解析计算和数值模拟结合的方法,结合大连相干光源直线加速器的设计,在设计参数条件下能量稳定性至少提升10%。同时提供了褶皱管尾场设计的一般步骤。

Corrugated pipe as beam energy stabilizer

Stringent tolerance budget is restricted on the linear accelerator (linac) parameters, such as the mean beam energy stability, peak current variation, electron bunch arrival time jitter, and the transverse beam position offset, in order to generate stable output pulses in modern linac driven free electron laser facility. In this paper, a corrugated pipe is used as a beam energy stabilizer. Analytical and numerical methods for designing such kind of stabilizer are described, and the simulation results show that the beam energy jitter can be reduced more than 10% after this structure is adopted for the case of Dalian Coherent Light Source (DCLS) linac.