强流电子束时间分辨系统瞬态脉冲干扰的抑制

强流电子束时间分辨测量系统在直线感应加速器(LIA)环境中会受到一些短暂的高能脉冲干扰,这些瞬态脉冲干扰既针对电路又针对测量系统,这对测量系统电子设备危害很大。介绍了时间分辨测量系统的原理,分析了瞬态脉冲干扰的成因和抑制方法,给出了束参数测量系统的实验布局和特点,分析瞬态脉冲干扰对LIA中测量系统电子器件电性能的影响和变化规律,并进一步探讨电子器件电性能受瞬态脉冲干扰后的抑制措施。通过采用光纤传输控制信号的措施,能很好地传输窄脉冲,信号延时抖动小,达到了高速信号的可靠传输要求,利用紧凑嵌入式方法,提高了抗电磁干扰的能力,这样可以更好地保护束参数测量电子器件,提高了整个系统的抗干扰能力及可靠性。

Impulsive interference suppression of intense electron beam time-resolved measurement system

In linear induction accelerator (LIA), it is common for the intense electron beam time-resolved measurement system to be interfered by some short high-energy pulses. These transient pulses, which may affect both circuits and measurement system, are harmful to the electronic devices. The principle of time-resolved measurement system is introduced in this paper, while the formation causes and the suppression method of transient pulse interferences are analyzed. Arrangement of the beam parameter measurement system is also proposed. The effects on electron devices performance by transient pulse interferences and the preventive measures are discussed, too. By using optical fibers, which effectively reduced the delay jitter of narrow pulses, the reliability requirement of high-speed control signal propagation was fulfilled. To provide better protection for the electronic devices of beam parameter measurements, the anti-electromagnetic interference ability of the system was enhanced by compactly-embedded method. The reliability of the overall measurement system was significantly improved by adopting these measures.