CERN DC火花系统动态响应的测量和故障接通时间的初步估算
Measurement of the dynamic response of the CERN DC spark system and preliminary estimates of the breakdown turn-on time
摘要：
新的高重复率（HRR）CERN直流火花系统已被用于调查的电流和电压的时间结构的击穿。模拟结果表明，真空击穿的发展在ns的时间尺度上，甚至更少。这个时间尺度的实验基准是比较模拟的关键。击穿的快速上升时间可以为低群速度和窄带宽加速结构（如T18和T24）实现的特别高的梯度提供一些解释。电压和电流的测量与以前的系统表明，瞬态响应测量的直流火花系统本身的固有电容和电感占主导地位。HRR系统的带宽限制远没有那么严重，允许测量大约12ns的上升时间。
英文摘要：
The new High Repetition Rate (HRR) CERN DC Spark System has been used to investigate the current and voltage time structure of a breakdown. Simulations indicate that vacuum breakdowns develop on ns timescales or even less. An experimental benchmark for this timescale is critical for comparison to simulations. The fast rise time of breakdown may provide some explanation of the particularly high gradients achieved by low group velocity, and narrow bandwidth, accelerating structures such as the T18 and T24. Voltage and current measurements made with the previous system indicated that the transient responses measured were dominated by the inherent capacitances and inductances of the DC spark system itself. The bandwidth limitations of the HRR system are far less severe allowing rise times of approximately 12ns to be measured.
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