4．5MV静电加速器端电压的稳定控制

THE TERMINAL VOLTAGE STABILIZATION SYSTEM OF 4. 5 MV VAN DE GRAFF ACCELERATOR AT PEKING UNIVERSITY

结合４．５ＭＶ静电加速器系统分析了端电压稳定控制系统的稳压系数，像缝仪（ＳＬＩＴＳ）、旋转伏特计（ＧＶＭ）以及拾波板（ＣＰＵ）的误差信号与高压纹波的关系，并根据实验测量的电晕三极管的特性参数计算了稳压系数Ｓ和Ｇ·Ｈ的波特图。

The corona stabilization system of 4. 5 MV Van de Graff is analyzed. Parameters of the corona triode and 6BK4 are measured. Relationships between fluctuations of terminal voltage and error signals coming from slits, CPU and GVM are given. On the base of these results and the gain of electrical circuit, the stalilization factors S and the Bode plots of G· H are obtained and discussed.