Research on the conduction process of laser triggered vacuum switch

In this paper, the conduction process of the Laser Triggered Vacuum Switch (LTVS) is studied. First, the velocity, density, and temperature of the initial plasma in the LTVS are simulated using COMSOL Multiphysics software. It is found that the generation and development of the initial plasma are at...

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Autores principales:	Rui Shi, Lingkai Kong, Jie Li
Formato:	article
Lenguaje:	EN
Publicado:	AIP Publishing LLC 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/76487d186e75476790d9738ee04af2bd
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id	oai:doaj.org-article:76487d186e75476790d9738ee04af2bd
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spelling	oai:doaj.org-article:76487d186e75476790d9738ee04af2bd2021-12-01T18:52:06ZResearch on the conduction process of laser triggered vacuum switch2158-322610.1063/5.0059261https://doaj.org/article/76487d186e75476790d9738ee04af2bd2021-11-01T00:00:00Zhttp://dx.doi.org/10.1063/5.0059261https://doaj.org/toc/2158-3226In this paper, the conduction process of the Laser Triggered Vacuum Switch (LTVS) is studied. First, the velocity, density, and temperature of the initial plasma in the LTVS are simulated using COMSOL Multiphysics software. It is found that the generation and development of the initial plasma are at the ns level. Second, the pre-breakdown current test circuit of the LTVS is established. It is found that when the applied voltage at both ends of the switch is 60 V, the multi-rod LTVS is successfully conducted, and then, the current becomes the conduction current and the voltage applied at both ends of the switch decreases significantly. Finally, the images of the LTVS vacuum arc are taken. With the increase in laser energy, the more abundant the initial plasma is, the lower the required gap voltage is. When the current increases to a certain value, the vacuum arc appears in multiple discharge channels, which makes the arc have a diffusion morphology. It is found that the current withstand capacity of a single channel is about 50 kA. As the multi-rod LTVS has three channels, its current withstand capacity can reach 150 kA.Rui ShiLingkai KongJie LiAIP Publishing LLCarticlePhysicsQC1-999ENAIP Advances, Vol 11, Iss 11, Pp 115318-115318-7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Rui Shi Lingkai Kong Jie Li Research on the conduction process of laser triggered vacuum switch
description	In this paper, the conduction process of the Laser Triggered Vacuum Switch (LTVS) is studied. First, the velocity, density, and temperature of the initial plasma in the LTVS are simulated using COMSOL Multiphysics software. It is found that the generation and development of the initial plasma are at the ns level. Second, the pre-breakdown current test circuit of the LTVS is established. It is found that when the applied voltage at both ends of the switch is 60 V, the multi-rod LTVS is successfully conducted, and then, the current becomes the conduction current and the voltage applied at both ends of the switch decreases significantly. Finally, the images of the LTVS vacuum arc are taken. With the increase in laser energy, the more abundant the initial plasma is, the lower the required gap voltage is. When the current increases to a certain value, the vacuum arc appears in multiple discharge channels, which makes the arc have a diffusion morphology. It is found that the current withstand capacity of a single channel is about 50 kA. As the multi-rod LTVS has three channels, its current withstand capacity can reach 150 kA.
format	article
author	Rui Shi Lingkai Kong Jie Li
author_facet	Rui Shi Lingkai Kong Jie Li
author_sort	Rui Shi
title	Research on the conduction process of laser triggered vacuum switch
title_short	Research on the conduction process of laser triggered vacuum switch
title_full	Research on the conduction process of laser triggered vacuum switch
title_fullStr	Research on the conduction process of laser triggered vacuum switch
title_full_unstemmed	Research on the conduction process of laser triggered vacuum switch
title_sort	research on the conduction process of laser triggered vacuum switch
publisher	AIP Publishing LLC
publishDate	2021
url	https://doaj.org/article/76487d186e75476790d9738ee04af2bd
work_keys_str_mv	AT ruishi researchontheconductionprocessoflasertriggeredvacuumswitch AT lingkaikong researchontheconductionprocessoflasertriggeredvacuumswitch AT jieli researchontheconductionprocessoflasertriggeredvacuumswitch
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Research on the conduction process of laser triggered vacuum switch

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