Fig. 1. Diagram of feeding trigger pulse via hollow inductor

Fig. 2. Diagram of TGS and its trigger pulse feed method

Fig. 3. The sectional view of TGS test bed

Fig. 4. The equivalent circuit model of TGS test bed and trigger generator

Fig. 5. The diagram of differential capacitive voltage monitor

Fig. 6. The electric field strength simulations of protective resistor under two states

Fig. 7. The voltage waveforms at the point B and C versus protective parameters

Fig. 8. The voltage waveforms at the end of trigger cable

Fig. 9. Typical voltage waveforms of TGS and the definition of t_g and t_d

Fig. 10. The voltage waveforms of TGS under different protective parameters

Fig. 11. t_d versus t_g with different protective resistance (without protective inductor)

Fig. 12. t_d versus t_g of finalized TGS