【摘要】 兆伏级触发气体开关是大型脉冲功率装置实现同步运行的核心器件。当前，通常所用的“抖动”概念用于脉冲触发开关时易发生混淆，难以准确评估脉冲触发开关对装置同步运行的影响。本文结合兆伏级电触发气体开关实验，提出了开关对外呈现的“宏观抖动”受2个参数影响，一是“自身抖动”，表征开关自身的稳定性，抖动越小，开关越稳定；二是“触发影响因子”，表征外部工作条件变化对开关稳定性的影响，取值0～1，触发影响因子越高，开关也越稳定。本文讨论了触发影响因子的定义及其物理意义。触发时刻影响触发时延的原因在于开关采用脉冲充电，不同触发时刻对应的开关电位不同，即开关工作系数不同。在此基础上，分析了多路脉冲源输出脉冲的时序关系及影响因素，量化分析了触发影响因子的具体作用，并优化了“剑光二号”加速器的同步方案，发生器和形成开关分别由一台多路输出的触发器驱动。实验结果表明，“剑光二号”加速器发生器抖动约为7.4 ns，而4路初级脉冲偏离理想时序的平均值为3.8 ns，与理论分析结果一致。更多还原

【Abstract】 In large-scale radiation simulation facilities, the MV triggered gas switch(TGS) plays a key role in the synchronization regulation. At present, the “jitter” is difficult to accurately measure the time stability of the TGS, and it is also difficult to evaluate the effect of TGS on the synchronization performance of the facility. In this paper, with the experimental research of an electric-triggered TGS, two time-stability parameters are discussed, including “ jitter” and “ trigger impact factor”. The “ jitter”represents the time stability of the TGS itself, and lower jitter indicates higher stability. The “ trigger impact factor” represents the effect of external operating conditions on the TGS stability, with a value range of 0 to 1. A higher trigger impact factor implies greater stability. The definition and physical meaning of “ trigger impact factor” are introduced. Trigger time affects the trigger delay because the switch is pulse charged, varing trigger times correspond to different switch potentials and operating coefficients. The relationship between trigger time and trigger delay is analyzed, the specific role of the trigger impact factor is examined, and the synchronization scheme for the Jianguang-Ⅱ accelerator is optimized. The results show that the generator’s jitter is ～7.4 ns and the average deviation of four primary pulses from the ideal timing is 3.8 ns, consistent with theoretical predictions.更多还原