标题： BEPCII直线加速器SLED的误差和抖动效应研究 显示英文标题

标题： Error and jitter effect studies on the SLED for BEPCII-linac

摘要： 射频脉冲压缩器是一种将长射频脉冲转换为具有更高峰值射频幅度的短脉冲的装置。 SLED可以被视为在大型直线加速器中最早使用的射频脉冲压缩器。 它在全球范围内被广泛研究，并在BEPC和BEPCII直线加速器中应用多年。 在常规运行过程中，误差和抖动效应会降低SLED在输出电磁波幅度或相位方面的性能。 误差效应主要包括由冷却水温度变化引起的频率漂移，以及由于机械加工或微波调谐导致的两个储能腔之间的频率/Q0/{\beta }不平衡。 抖动效应指的是PSK切换相位和时间抖动。 在本文中，我们重新推导了用于BEPCII直线加速器的传统SLED的通用公式。 最后，研究了误差和抖动效应对SLED性能的影响。 显示英文摘要

摘要： RF pulse compressor is a device to convert a long RF pulse to a short one with much higher peak RF magnitude. SLED can be regarded as the earliest RF pulse compressor used in large scale linear accelerators. It is widely studied around the world and applied in the BEPC and BEPCII linac for many years. During the routine operation, the error and jitter effects will deteriorate the SLED performance either on the output electromagnetic wave amplitude or phase. The error effects mainly include the frequency drift induced by cooling water temperature variation and the frequency/Q0/{\beta} unbalances between the two energy storage cavities caused by mechanical fabrication or microwave tuning. The jitter effects refer to the PSK switching phase and time jitters. In this paper, we re-derived the generalized formulae for the conventional SLED used in the BEPCII linac. At last, the error and jitter effects on the SLED performance are investigated.