Prepulse switch

QuickField simulation example

Example by Dr. Raymond J. Allen, Plasma Physics Division, Naval Research Laboratory
Model was used in the preparation of this publication

Prepulse switch consists of two groups of electrodes (grounded and high-voltage) separated by a shielding disk, enclosed in the metal body.

Problem Type electrostatics.

Geometry 3D import.

Image courtesy of Plasma Physics Division, Naval Research Laboratory

Given
Relative permittivity of water ε_r = 81,
Applied voltage V = 4 MV.

Task
Calculate the electric field distribution in the device. Find the charge on electrodes.

Solution
Electrostatic field and charges distribution in the Pre-pulse Switch used in the improved Gamble generator design.

Results
Electric field distribution in the water around the groups of electrodes:

Reference:
Raymond Allen et al. Plasma Physics Division, Naval Research Laboratory. Use of new & improved QuickField 3D to aid design of Gamble II water switch hardware for implementation on Gamble III.