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Factors affecting the operation of laser-triggered gas switch (LTGS) with multi-electrode spark gap

MacGregor, S.J. and Timoshkin, I. and Given, M.J. and Fouracre, R.A. and Lehr, J. and Warne, L. (2007) Factors affecting the operation of laser-triggered gas switch (LTGS) with multi-electrode spark gap. In: 16th IEEE International Pulsed Power Conference, 2007, 2007-06-17.

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Abstract

Multi-electrode spark switches can be used for switching applications at elevated voltages or for command triggering. Symmetrical field graded electrodes allow the electrical stress across individual gaps to be controlled, thus maximising the hold off voltage and reducing switch pre-fire. The paper considers some aspects of multielectrode switch design and their influence on switching behavior. Non-symmetrical, uni-directional electrode topologies can be employed with advantages over traditional symmetrical design. The choice of working gas and gas pressure can influence switching performance in terms of delay-time and jitter. Transient analysis of switch characteristics has been undertaken in order to understand multi-electrode switching.