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The triggered behavior of a controlled corona stabilised cascade switch

Given, M and Wilson, Mark and Timoshkin, Igor and Macgregor, Scott and Wang, Tao and Lehr, J. (2011) The triggered behavior of a controlled corona stabilised cascade switch. In: IEEE conference record PPC2011. IEEE, New York, pp. 1015-1020. ISBN 9781457706295

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Abstract

Corona stabilised switches have been shown to have advantages in pulse power switching applications due to their high repetition rates and low jitter. Work performed in recent years by the High Voltage Technologies Group within the Department of Electronic and Electrical Engineering at the University of Strathclyde has shown that the operating voltage range of such switches can be extended by using a multi-gap cascade configuration. One particular multi-gap topology was shown to operate under pressure at 100 kV with a switching jitter of  2ns. It has since been shown that by modifying the topology of the corona sources on the electrodes, it is possible to control the grading of the voltage distribution across the gaps in the cascade. The voltages across each gap and the self-break behaviour of the cascade were found to be in close agreement with the values predicted from the corona emission characteristics for the tested electrode topologies. This paper reports on a further examination of the behaviour of the corona controlled switching topology, where triggered operation of the switch has been investigated for different voltage distributions across the cascade gaps.