Fig. 1. Cutaway view of the four-gap ring electrode gas switch

Fig. 2. Cutaway view of the two-gap ring electrode gas switch

Fig. 3. Simulation results of gap electric field between two-gap gas switch and four-gap gas switch

Fig. 4. Equivalent circuit model of the four-gap gas switch

Fig. 5. Schematic diagram of the experimental circuit

Fig. 6. Self-breakdown voltage of two-gap gas switch and four-gap gas switch

Fig. 7. Calculated and measured results of self-breakdown voltage for the four-gap switch

Fig. 8. Self-breakdown voltage of the two-gap gas switch at a pressure of 0.54 MPa

Fig. 9. Mean residual life plot

Fig. 10. Weibull distribution fitting of small probability pre-fire events based on POT method

Fig. 11. Calculation results of switch pre-fire rate under different working coefficients

Fig. 12. Experimental results of pre-fire rate of the four-gap gas switch