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ＢＥＰＣ运行７年来，储存环超高真空系统平均本底真空一直优于６．７×１０－８Ｐａ，环真空测量采用Ｂ－Ａ规通过１００ｍ长电缆线输入信号到真空计，观察真空计的测量读数来监视真空。在运行中，环上有１／４的真空测量点受干扰，造成测量读数为０，严重影响环超高真空系统的监测，也无法求环平均动态真空的准确度。本文介绍一种采用新型收集极电缆线和在系统内加金属网抗干扰措施的实验研究。结果表明，干扰来自两方面：其一是冲击磁铁（Ｋ铁）的脉冲磁场，以及Ｋ铁高压引出线周围的电磁波辐射；其二是束流在Ｋ铁内激发的高次模式电磁波。在实验中，分析研究了干扰的来源，为采取更好的抗干扰措施提供了依据
BEPC operation over the past 7 years, the average background vacuum of the storage ring ultra-high vacuum system has been better than 6.7 × 10-8Pa, ring vacuum measurement using B-A gauge through 100m cable input signal to the vacuum gauge to observe the vacuum gauge measurements Reading to monitor the vacuum. In operation, 1/4 of the ring vacuum measurement point interference, resulting in readings of 0, seriously affect the ring ultra-high vacuum system monitoring, can not find the ring average dynamic vacuum accuracy. This article presents an experimental study using a new collector cable and anti-interference measures with metal mesh in the system. The results show that the interference comes from two aspects: one is the pulsed magnetic field of the impact magnet (K-iron) and the electromagnetic radiation around the K-iron high voltage lead-out line; the other is the high-order mode electromagnetic wave excited by the beam in the K-iron. In the experiment, the source of interference was analyzed and studied, which provided the basis for taking better anti-interference measures