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A 22-stage 4 MV laser-triggered multistage multi-channel switch (LTS) was designedaccording to the hypothesis that the well-proportioned electrical field distribution is helpful inreducing the jitter of delay.Field distribution in the switch section is regulated by a metal fieldregulation ring and several gradient rings.In order to reduce the jitter further,a SF_6/N_2 mixtureis chosen as the switching medium.The generalized standard deviation of the self-breakdownvoltage and the deviation of the average value from the prediction is less than 4.4% and 13%respectively.Linearity of the self-breakdown voltage is better than 0.95.Triggered by a laser pulseof 35 mJ/3 ns,the delay is about 26 ns at a working voltage of 85%±3% U_(SB) (Self-breakdownVoltage).Maximum deviation of delay is less than ±2.5 ns.Jitter is less than 1.5 ns.The delayand jitter decrease with the increase in the working ratio (the ratio of working voltage to U_(SB)),pressure or voltage.
A 22-stage 4 MV laser-triggered multistage multi-channel switch (LTS) was designedaccording to the hypothesis that the well-proportioned electrical field distribution is helpful inreducing the jitter of delay. Field distribution in the switch section is regulated by a metal fieldregulation ring and several gradient rings. In order to reduce the jitter further, a SF_6 / N_2 mixtureis chosen as the switching medium. The generalized standard deviation of the self-breakdownvoltage and the deviation of the average value from the prediction is less than 4.4% and 13% respectively. Linearity of the self-breakdown voltage is better than 0.95. Triggered by a laser pulse of 35 mJ / 3 ns, the delay is about 26 ns at a working voltage of 85% ± 3% U- (SB) breakdownVoltage) .Maximum deviation of delay is less than ± 2.5 n.Jitter is less than 1.5 ns.The delay and jitter decrease with the increase in the working ratio (the ratio of working voltage to U SB), pressure or voltage.