Optimization design of electromagnetic field of multigap gas switch

Three different electrode configurations of multigap switches, ellipse-ellipse, arc-ellipse and arc-arc types, are designed. And the simulation of electric field and the static experiment of the switches are conducted. The result shows that, the field distribution on the electrode surface and the static characteristics of the ellipse-ellipse type are the best with the field asymmetric coefficient of 1.03. The arc-ellipse type has the minimum field variation in the vertical direction of its surface with a deviation degree less than 1%.