skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Computational analysis of current-loss mechanisms in a post-hole convolute driven by magnetically insulated transmission lines

Abstract

Numerical simulations of a vacuum post-hole convolute driven by magnetically insulated vacuum transmission lines (MITLs) are used to study current losses due to charged particle emission from the MITL-convolute-system electrodes. This work builds on the results of a previous study [E.A. Madrid et al. Phys. Rev. ST Accel. Beams 16, 120401 (2013)] and adds realistic power pulses, Ohmic heating of anode surfaces, and a model for the formation and evolution of cathode plasmas. The simulations suggest that modestly larger anode-cathode gaps in the MITLs upstream of the convolute result in significantly less current loss. In addition, longer pulse durations lead to somewhat greater current loss due to cathode-plasma expansion. These results can be applied to the design of future MITL-convolute systems for high-current pulsed-power systems.

Authors:
 [1];  [1];  [1];  [1];  [1];  [2];  [2]
  1. Voss Scientific, LLC, Albuquerque, NM (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1181481
Alternate Identifier(s):
OSTI ID: 1214811
Grant/Contract Number:
AC04-94AL85000
Resource Type:
Journal Article: Published Article
Journal Name:
Physical Review Special Topics. Accelerators and Beams
Additional Journal Information:
Journal Volume: 18; Journal Issue: 3; Journal ID: ISSN 1098-4402
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Rose, D.  V., Madrid, E.  A., Welch, D.  R., Clark, R.  E., Mostrom, C.  B., Stygar, W.  A., and Cuneo, M.  E. Computational analysis of current-loss mechanisms in a post-hole convolute driven by magnetically insulated transmission lines. United States: N. p., 2015. Web. doi:10.1103/PhysRevSTAB.18.030402.
Rose, D.  V., Madrid, E.  A., Welch, D.  R., Clark, R.  E., Mostrom, C.  B., Stygar, W.  A., & Cuneo, M.  E. Computational analysis of current-loss mechanisms in a post-hole convolute driven by magnetically insulated transmission lines. United States. doi:10.1103/PhysRevSTAB.18.030402.
Rose, D.  V., Madrid, E.  A., Welch, D.  R., Clark, R.  E., Mostrom, C.  B., Stygar, W.  A., and Cuneo, M.  E. Wed . "Computational analysis of current-loss mechanisms in a post-hole convolute driven by magnetically insulated transmission lines". United States. doi:10.1103/PhysRevSTAB.18.030402.
@article{osti_1181481,
title = {Computational analysis of current-loss mechanisms in a post-hole convolute driven by magnetically insulated transmission lines},
author = {Rose, D.  V. and Madrid, E.  A. and Welch, D.  R. and Clark, R.  E. and Mostrom, C.  B. and Stygar, W.  A. and Cuneo, M.  E.},
abstractNote = {Numerical simulations of a vacuum post-hole convolute driven by magnetically insulated vacuum transmission lines (MITLs) are used to study current losses due to charged particle emission from the MITL-convolute-system electrodes. This work builds on the results of a previous study [E.A. Madrid et al. Phys. Rev. ST Accel. Beams 16, 120401 (2013)] and adds realistic power pulses, Ohmic heating of anode surfaces, and a model for the formation and evolution of cathode plasmas. The simulations suggest that modestly larger anode-cathode gaps in the MITLs upstream of the convolute result in significantly less current loss. In addition, longer pulse durations lead to somewhat greater current loss due to cathode-plasma expansion. These results can be applied to the design of future MITL-convolute systems for high-current pulsed-power systems.},
doi = {10.1103/PhysRevSTAB.18.030402},
journal = {Physical Review Special Topics. Accelerators and Beams},
number = 3,
volume = 18,
place = {United States},
year = {Wed Mar 04 00:00:00 EST 2015},
month = {Wed Mar 04 00:00:00 EST 2015}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevSTAB.18.030402

Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

Save / Share: