Operation of a Five-Stage 40,000-CM2-Area Insulator Stack at 158 kV/CM
SANDIA NATIONAL LABS ALBUQUERQUE NM
Pagination or Media Count:
We have demonstrated operation of a 3.35m-diameter insulator stack at 158 kVcm with no total-stack flashovers on five consecutive Z-accelerator shots. The stack consisted of five 45 -profile 5.715-cm-thick crosslinked- polystyrene Rexoiite-1422 insulator rings, and four anodized-aluminum grading rings shaped to reduce the field at cathode triple junctions. The width of the voltage pulse at 89 of peak was 32 ns. We compare this result to a new empirical flashover relation developed from previous small-insulator experiments conducted with flat unanodized electrodes.
- Particle Accelerators