High power graphite two-electrode spark gap switch

guo liangfu; li li; lai guiyou; lin fuchang; chen dehuai; li yizheng; li dongmei; luan yongping

Volume 22 Issue 12

Dec. 2010

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Abstract

References

Article Navigation > High Power Laser and Particle Beams > 2010 > 22(12): 0-

sun hong-bing, pei yuan-ji, jin kai, et al. Calculation of loaded cavity external Q[J]. High Power Laser and Particle Beams, 2006, 18.

Citation:

guo liangfu, li li, lai guiyou, et al. High power graphite two-electrode spark gap switch[J]. High Power Laser and Particle Beams, 2010, 22.

sun hong-bing, pei yuan-ji, jin kai, et al. Calculation of loaded cavity external Q[J]. High Power Laser and Particle Beams, 2006, 18.

Citation:

guo liangfu, li li, lai guiyou, et al. High power graphite two-electrode spark gap switch[J]. High Power Laser and Particle Beams, 2010, 22.

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High power graphite two-electrode spark gap switch

1.
Research Center of Laser Fusion,CAEP,P.O.Box 919-988,Mianyang 621900,China;
2.
College of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430074,China

Publish Date: 2010-12-07

Abstract

Abstract

Two-electrode spark gap switch is an important candidate for the switching element of huge high laser power supply systems. This paper presents the using condition and critical technology of graphite two-electrode spark gap switch. The electrical field strength simulation shows that the electrode shape which satisfies Borda profile could constitute the optimized spark gap. Referred to the known parameters about the ST-300 switch used in NIF, a series of electric tests have been done. The tests have proved that the graphite two-electrode spark gap switch can support 300 kA peak pulse current, with over 100 C transfer charge and over 1 000 shots of lifetime, therefore meeting the requirement of the 1.2 MJ huge laser power supply system.
- pulsed power technique,
- spark gap switch,
- electrode,
- transfer charge

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