Discharge process and closure jitter of six-stage gas switch under pulsed trigger

Peitian, 丛培天 Cong; Aici, 邱爱慈 Qiu; Tieping, 孙铁平 Sun; Liang, 盛亮 Sheng; Yang, 李杨 Li; Mei, 张美 Zhang

doi:10.3788/hplpb20132505.1303

Cited by 7 publications

(1 citation statement)

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“…Modern peaking gas switch usually have the typical pressure about 10MPa [4]. The features of the waveform modulated by the switch, such as amplitude and rise-time, are decided by the gas pressure and gap distance between the electrodes [5,6,7]. Needed waveforms can be obtained through adjusting the gap distance, but usual switches have no external adjustment devices, and usually needs opening the switch.…”

Section: Introductionmentioning

confidence: 99%

Design of a 10MPa Nanosecond Gas Switch with Adjustable Gap

Cao¹,

Fan²,

Song³

et al. 2014

AMM

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This paper introduces a method to adjust the gap distance of nanosecond gas switch from outside when it is filled with high pressure gas. By using a two-stage planetary gear train and a pinion-and-rack device the gap between the electrodes can be linearly adjusted. The adjusting precision is 0.05 mm and adjustment range is 0 to 10 mm. The sealing of the insulator ring, rotation axle and outside conductors is designed. The performance of the rotation axle is pretty well under 12MPa gas pressure, air leakage not found. Experimental study on switch discharging is carried out by using a high voltage nanosecond pulse generator. The results show the output voltage of the pulse can reach 600kV by adjusting the switch gap. The rise-time of the pulse can be shortened form 3.5ns to 1ns.

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Section: Introductionmentioning

confidence: 99%

Design of a 10MPa Nanosecond Gas Switch with Adjustable Gap

Cao¹,

Fan²,

Song³

et al. 2014

AMM

View full text Add to dashboard Cite

show abstract

Investigations on trigger process of triple-gap laser triggered multi-stage vacuum switch

Chen,

Liao,

Duan

et al. 2024

Vacuum

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Note: Multi-gap gas switch with low trigger-threshold voltage by mounting resistors and capacitors in parallel with switch gaps

Jiang

Sun

Wang

et al. 2018

Review of Scientific Instruments

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To reduce the trigger threshold voltage of the multi-gap gas switch used for linear transformer drivers, a method is proposed by mounting resistors and capacitors in parallel with the switch gaps. Based on the circuit model of the six-gap gas switch, the gap voltage distribution during the triggering process is analyzed. When the multi-gap gas switch is triggered, the voltage distribution between gaps is mainly determined by the stray capacitance between electrodes. In such condition, the trigger voltage is not fully applied on the trigger gap, and as a consequence, a higher trigger voltage is required for obtaining a low jitter. The effects of capacitor parameters on the triggering characteristics of the switch are experimentally investigated. Compared with the original switch design, the results indicate that at a charging voltage of ±80 kV and operating at 60% of the self-breakdown voltage, the trigger voltage is reduced from 110 kV to 75 kV while the 3.2 ns jitter of the switch is preserved.

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Discharge process and closure jitter of six-stage gas switch under pulsed trigger

Cited by 7 publications

References 0 publications

Design of a 10MPa Nanosecond Gas Switch with Adjustable Gap

Design of a 10MPa Nanosecond Gas Switch with Adjustable Gap

Investigations on trigger process of triple-gap laser triggered multi-stage vacuum switch

Note: Multi-gap gas switch with low trigger-threshold voltage by mounting resistors and capacitors in parallel with switch gaps

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