Accession Number:

ADA634504

Title:

Modeling Magnetically Insulated Power Flow In Mercury

Descriptive Note:

Conference paper

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC PLASMA PHYSICS DIV

Report Date:

2003-06-01

Pagination or Media Count:

5.0

Abstract:

Mercury is a 50-ns, 6-MV, 360-kA accelerator with a magnetically-insulated, inductive-voltage-adder MIVA architecture. The machine was formerly known as KALIF-HELIA1 at Forschungszentrum Karlsruhe in Germany but now, with some minor modifications2, will be sited at NRL. Mercury can be operated in either positive or negative polarity2-4. Voltage is added in vacuum along a magnetically insulated transmission line MITL from six voltage adder cells. Understanding power flow and coupling to a load in this geometry requires the application of MITL theory5-8. Because the electric field stresses on the cathode in the MITL exceed the vacuum explosive-emission threshold, electron emission occurs and current flow is divided between current flowing in the metal and in vacuum electron flow. This electron flow manifests itself as a loss current until the total current is large enough to magnetically insulate the emitted electrons from crossing the anode-cathode AK gap.

Subject Categories:

  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE