Design of a ceramic radial insulation structure for a high current diode

xun tao; yang han-wu; zhang jian-de; zhao yan-song; luo ling

Volume 19 Issue 06

Jun. 2007

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shen yi, xia liansheng, zhang huang, et al. Experimental research on intense pulsed emission of carbon nanotube cathode[J]. High Power Laser and Particle Beams, 2011, 23.

Citation:

xun tao, yang han-wu, zhang jian-de, et al. Design of a ceramic radial insulation structure for a high current diode[J]. High Power Laser and Particle Beams, 2007, 19.

shen yi, xia liansheng, zhang huang, et al. Experimental research on intense pulsed emission of carbon nanotube cathode[J]. High Power Laser and Particle Beams, 2011, 23.

Citation:

xun tao, yang han-wu, zhang jian-de, et al. Design of a ceramic radial insulation structure for a high current diode[J]. High Power Laser and Particle Beams, 2007, 19.

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Design of a ceramic radial insulation structure for a high current diode

1.
College of Optoelectric Science and Engineering,National University of Defense Technology,Changsha 410073,China

Publish Date: 2007-06-15

Abstract

Abstract

For a high current diode composed of a small disk type ceramic insulator water/vacuum interface, the design of radial insulation structure is presented. According to the theory of vacuum flashover and the design rules for radial insulation, a “cone-column” anode outline and the cathode shielding rings were adopted. The electrostatic field along the insulator surface was obtained by FEA simulation. By adjusting the outline of the anode and the shielding rings, the electric fields were well distributed and the field around the triple junction was controlled. A high voltage test was carried out on a water isolated spiral pulse forming line(PFL) accelerator with 200 ns pulse width, and the results show the diode can work stably in 400 kV, 200 ns conditions.
- high current diode,
- ceramic insulator,
- radial insulation,
- long pulse accelerator

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