Transverse‐flow 50‐kV trigatron switch for 100‐pps burst‐mode operation
Transverse‐flow 50‐kV trigatron switch for 100‐pps burst‐mode operation
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DOI：
10.1063/1.1146901
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发表时间：
1996-04
影响因子：
1.6
通讯作者：
R. Beverly;R. N. Campbell
中科院分区：
文献类型：
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作者：
R. Beverly;R. N. Campbell
一种廉价、紧凑的三电极（三角管）开关利用横向气流，专为突发模式应用而开发。该开关通过三个内置微型喷嘴的绝热膨胀进行冷却，相互作用的气流用于清除电极区域的热放电气体。测试表明，可以在高达 100 个脉冲/秒 (pps) 的重复率下控制 100 kW 的平均功率，持续 10 秒，同时保持高达 50 kV 的释抑电压。在这些条件下，开关换向电流高达 6 kA，脉冲宽度为 10 μs。通过使用供应压力为 500-1000 kPa、质量流量为 0.5-8 g/s 的无油干燥空气，可降低运行成本。使用与相邻电极齐平的圆头触发销和首先导致触发销和相对电极之间击穿的最佳触发电压来获得最小开关抖动。
An inexpensive, compact, three‐electrode (trigatron) switch utilizing transverse gas flow was developed for burst‐mode applications. The switch is cooled by adiabatic expansion from three built‐in miniature nozzles and the interacting flow streams serve to sweep hot discharge gases from the electrode region. Tests demonstrated control of an average power of 100 kW for 10 s bursts at repetition rates up to 100 pulses per second (pps) while maintaining a hold‐off voltage up to 50 kV. Under these conditions, the switch commuted currents up to 6 kA with a pulsewidth of 10 μs. The cost of operation is reduced by using oil‐free and dry air at a supply pressure of 500–1000 kPa and a mass flow rate of 0.5–8 g/s. Minimum switch jitter is obtained using a rounded‐tip trigger pin flush with the adjacent electrode and an optimum trigger voltage that causes breakdown first between the trigger pin and opposite electrode.