NDLI: Numerical simulations of a post-hole convolute driven by high power magnetically insulated transmission lines: Analysis of current loss in steady-state and time-dependent operating modes

Content Provider	IEEE Xplore Digital Library
Author	Madrid, E.A. Welch, D.R. Clark, R.E. Rose, D.V. Stygar, W.A. Cuneo, M.E. Gomez, M.R. Hughes, T.P. Pointon, T.D. Seidel, D.B.
Copyright Year	2013
Description	Author affiliation: Sandia Nat. Labs., Albuquerque, NM, USA (Stygar, W.A.; Cuneo, M.E.; Gomez, M.R.; Hughes, T.P.; Pointon, T.D.; Seidel, D.B.) \|\| Voss Sci., LLC, Albuquerque, NM, USA (Madrid, E.A.; Welch, D.R.; Clark, R.E.; Rose, D.V.)
Abstract	Electron power flow in two radial magnetically insulated transmission lines (MITLs) coupled to a vacuum post-hole convolute is studied using 3D particle-in-cell simulations. At sufficiently high voltages, electron emission upstream of the convolute results in a portion of the current carried by the transmission lines to flow in an electron sheath along the cathode surfaces. The simulations show that at 50-200 TW, the transition from the individual MITLs to the convolute results in a portion of the MITL sheath current being lost to both anode and cathode structures. The losses are identified as a function of radius and correlated with Poynting vector stream lines which can be followed by individual electrons. For a fixed MITL-convolute geometry, the difference between the current in the system upstream of the convolute and current delivered to the load (defined as the loss current) increases with both operating voltage and load impedance. The effects of space-charge-limited (SCL) ion emission from anode surfaces are considered for several specific cases in both steady-state and time-dependent operating modes. The impact of cathode plasma formation on the loss current is also considered for the time-dependent simulation results. Collectively, these simulation results are being used to help formulate design criteria for high-power convolute-MITL systems.
Starting Page	1
Ending Page	1
File Size	112768
Page Count	1
File Format	PDF
ISBN	9781467351713
ISSN	07309244
DOI	10.1109/PLASMA.2013.6634956
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power transmission lines Cathodes Magnetic analysis Laboratories Surface impedance Anodes Simulation
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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Numerical simulations of a post-hole convolute driven by high power magnetically insulated transmission lines: Analysis of current loss in steady-state and time-dependent operating modes

NUMERICAL SIMULATIONS OF A POST-HOLE CONVOLUTE DRIVEN BY HIGH POWER MAGNETICALLY INSULATED TRANSMISSION LINES:ANALYSIS OF CURRENT LOSS IN STEADY-STATE AND TIME-DEPENDENT OPERATING MODES.

Steady-state modeling of current loss in a post-hole convolute driven by high power magnetically insulated transmission lines

Particle-in-Cell Simulations of the Magnetically Insulated Transmission Lines and Post-Hole Convolute of ZR

Computer simulations of the magnetically insulated transmission lines and post-hole convolute of ZR

Computer simulations of the magnetically insulated transmission lines and post-hole convolute of ZR.

Particle-in-cell simulations of the magnetically insulated transmission lines and post-hole convolute of ZR.

Particle-in-cell Simulations of the Magnetically Insulated Transmission lines and post-hole convolute of ZR.

The flow dynamics along non-uniform self magnetically insulated transmission lines

Numerical simulations of a post-hole convolute driven by high power magnetically insulated transmission lines: Analysis of current loss in steady-state and time-dependent operating modes

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