Accession Number:

ADA634636

Title:

Uv Pre-Ionized Rail-Gap Switch For Stacked Blumlein Pulse Generators

Descriptive Note:

Conference paper

Corporate Author:

LAWRENCE LIVERMORE NATIONAL LAB CA

Personal Author(s):

Report Date:

2005-06-01

Pagination or Media Count:

5.0

Abstract:

Stacked Blumlein Pulse Generators comprised of parallel-plate transmission lines are potentially a useful pulse-power architecture for high-gradient, compact, electron-beam accelerators and other applications. Such pulse generators require a low-inductance, fast 5ns switch per stage to erect the stack and produce the desired output pulse. We are developing a rail-gap switch tightly integrated with the stack for this application. We employ ultraviolet light UV to pre-ionize the switch, which facilitates prompt, low-jitter, and potentially multi-channel operation. A novel aspect of our switch is that the source of the UV is a conventional Xenon flashlamp. This allows variation of the switch pressure and gas without affecting the flashlamp operation. We can operate our switch in either triggered or self-breaking mode. Here we present initial results of a two-stage, stacked Blumlein operating in self-break mode. We compare the switch performance to gas-switch scaling laws with respect to resistive-phase risetime and trigger delay as a function of gas density, gap-length, and gap-voltage.

Subject Categories:

  • Electrical and Electronic Equipment
  • Operations Research
  • Electromagnetic Pulses

Distribution Statement:

APPROVED FOR PUBLIC RELEASE