用于能量和波束位置稳定的快速数字反馈系统

R. Dickson, V. Lebedev
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引用次数: 11

摘要

在CEBAF加速器目标处,用于光束能量和位置稳定的数字快速反馈系统能够抑制0 ~ 80hz频段内的光束运动,并在前12次电力线谐波处进行窄带抑制。该系统采用两台VME计算机,以2.4 kHz的采样率运行。该数值算法是基于一个带有附加前馈回路的递归数字滤波器来抑制高压线路谐波。该系统对光束运动的抑制系数大于10倍,从而使光束相对能量波动稳定在10/sup -5/以上,使光束在目标上的位置稳定在20 /spl mu/m以上。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Fast digital feedback system for energy and beam position stabilization
A digital fast feedback system for beam energy and position stabilization at the target of the CEBAF accelerator is capable of suppressing beam motion in the frequency band from 0 to 80 Hz and also performs narrow band suppression at the first twelve power line harmonics. The system utilizes two VME computers and runs at a 2.4 kHz sampling rate. The numerical algorithm is based on a recursive digital filter with an additional feedforward loop for suppression of high power line harmonics. The system suppresses beam motion by a factor greater than ten, thus achieving the stabilization of relative beam energy fluctuations to better than 10/sup -5/ and stabilization of beam position on the target to better than 20 /spl mu/m.
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