Development of miniature pseudo-spark switch

Zheng Zhao; Liang Zhou; Xiaoyan Luan; Ming Zhang; Hongfei Yang

doi:10.11884/HPLPB202335.220290

Journals >High Power Laser and Particle Beams >Volume 35 >Issue 3 >Page 035002 > Article

High Power Laser and Particle Beams
Vol. 35, Issue 3, 035002 (2023)

Development of miniature pseudo-spark switch

Zheng Zhao, Liang Zhou, Xiaoyan Luan, Ming Zhang, and Hongfei Yang

Author Affiliations

The 12th Research Institute of China Electronics Technology Group Corporation, Beijing 100015, China

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DOI: 10.11884/HPLPB202335.220290 Cite this Article

Zheng Zhao, Liang Zhou, Xiaoyan Luan, Ming Zhang, Hongfei Yang. Development of miniature pseudo-spark switch[J]. High Power Laser and Particle Beams, 2023, 35(3): 035002 Copy Citation Text

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Fig. 1. Typical structure of pseudo-spark switch & voltage equipotential distribution diagram of pseudo-spark discharge

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Schematic diagram of miniature pseudo-spark switch and equipotential distribution diagram of the cusp and schematic diagram of conventional single-gap pseudo-spark switch

Fig. 2. Schematic diagram of miniature pseudo-spark switch and equipotential distribution diagram of the cusp and schematic diagram of conventional single-gap pseudo-spark switch

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Fig. 3. Comparison between conventional pseudo-spark switch and miniature pseudo-spark switch

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Fig. 4. Testing of miniature pseudo-spark switch

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Fig. 5. Test circuit of miniature pseudo-spark switch

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Fig. 6. Discharge waveform plot of miniature pseudo-spark switch

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Fig. 7. Diagram of the relationship between forward anode voltage and peak anode pulse current

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Fig. 8. The distribution plot of anode current delay time

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	peak forward anode voltage (max)/kV	peak anode current/kA	hydrogen reservoir	size
miniature pseudo-spark switch	25	40	no	ϕ25 mm×30 mm
conventional pseudo-spark switch	40	80	yes	ϕ114 mm×87.6 mm

Table 1. Comparison between miniature pseudo-spark switch and conventional pseudo-spark switch

peak forward anode voltage/kV	peak anode current/kA	delay time/ns
2	8.4	245
3	13.3	250
4	17.9	268
5	22.8	247
6	27.6	245
7	31.8	266
8	36.0	275
9	39.9	252

Table 2. Experimental data of miniature pseudo-spark switch

items	conditions and requirements	results
high temperature storage	non-working state; T=55 ℃; t=48 h; recovery time: ≥2 h.	U_a=9 kV, I_a=40 kA; once/30 s, 10 times, no breakdown, no corona
low temperature storage	non-working state; T=−40 ℃; t=24 h; recovery time: ≥2 h.	U_a=9 kV, I_a=40 kA; once/30 s, 10 times, no breakdown, no corona
temperature cycle	non-working state; T₁=−40 ℃, t₁=2 h; T₂=55 ℃, t₂=2 h; shift time≤5 min; N=3; recovery time :12 h.	U_a=9 kV, I_a=40 kA; once/30 s, 10 times, no breakdown, no corona
sweep frequency vibration	U_a=14 kV, PSD: 0.15 g²/Hz, t=10 min, once for axial and radial.	no breakdown, no corona

Table 3. Reliability test of miniature pseudo-spark switch

	peak forward anode voltage/ self-breakdown voltage/kV	minimum operate voltage/kV	peak anode current/kA	minimum trigger voltage/kV	delay time/ns
miniature pseudo-spark switch	10	0.5	40	0.2	280
RQ-10 trigger tube	11	6	32	4.5	−
ZQM-9901 thyratron	10	0.5	0.2	0.18	350

	hot cathode	life/times	size (mm×mm)	total height/mm	draw ability of reverse current
miniature pseudo-spark switch	no	＞20000	ϕ25 mm ×30 mm	53	yes
RQ-10 trigger tube	no	1000	ϕ36.2 mm ×32.5 mm	36	yes
ZQM-9901 thyratron	yes	−	ϕ25 mm ×53 mm	79	no

Table 4. Comparison between miniature pseudo-spark switch, trigger tube and miniature thyratron

Zheng Zhao, Liang Zhou, Xiaoyan Luan, Ming Zhang, Hongfei Yang. Development of miniature pseudo-spark switch[J]. High Power Laser and Particle Beams, 2023, 35(3): 035002

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