Research on vacuum flashover of insulator in induction cavity

Xia Liansheng; Chen Sifu; Shi Jinshui

doi:10.11884/HPLPB202032.200011

Volume 32 Issue 4

Mar. 2020

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Xia Liansheng, Chen Sifu, Shi Jinshui. Research on vacuum flashover of insulator in induction cavity[J]. High Power Laser and Particle Beams, 2020, 32: 045104. doi: 10.11884/HPLPB202032.200011

Citation:

Xia Liansheng, Chen Sifu, Shi Jinshui. Research on vacuum flashover of insulator in induction cavity[J]. High Power Laser and Particle Beams, 2020, 32: 045104. doi: 10.11884/HPLPB202032.200011

Xia Liansheng, Chen Sifu, Shi Jinshui. Research on vacuum flashover of insulator in induction cavity[J]. High Power Laser and Particle Beams, 2020, 32: 045104. doi: 10.11884/HPLPB202032.200011

Citation:

Xia Liansheng, Chen Sifu, Shi Jinshui. Research on vacuum flashover of insulator in induction cavity[J]. High Power Laser and Particle Beams, 2020, 32: 045104. doi: 10.11884/HPLPB202032.200011

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Research on vacuum flashover of insulator in induction cavity

doi: 10.11884/HPLPB202032.200011

Institute of Fluid Physics, CAEP, P. O. Box 919-106, Mianyang 621900, China

Received Date: 2020-01-11
Rev Recd Date: 2020-02-25
Publish Date: 2020-03-06

Abstract

Abstract

Flashover across the insulator in induction cavity with electron beam load once occurred frequently, which affected the performance parameters and stability of the high voltage high current devices and equipment. This paper studies the vacuum surface flashover across the insulator in the induction cavity of a linear induction accelerator under debugging. After excluding design and fabrication of the insulator as well as cleanness and vacuum degrees, it is found that the electrons from the plasma induced by high energy electrons interacting with the gas adsorbed on the inner cavity wall might play the key role of flashover. These thermal electrons move randomly and some of them will reach and stay on the insulator surface for some time, and flashover happens when high electric field is applied across the insulator with accumulated electrons.
- intensive pulsed accelerator,
- insulator in an induction cavity,
- vacuum surface flashover,
- accumulated free electrons,
- electrons induced plasma

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References(15)

References

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