Combline antenna modeling for plasma heating

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Description

The combline antenna for plasma heating, as proposed by General Atomics, has unique potential for solving many plasma drive problems. The benefit of the combline design is the utilization of the coupling between elements that avoids a more cumbersome multidrive system. This design is being investigated using computational EM modeling codes in the 100-400 MHz band using resources at General Atomics and LLNL. Preliminary experimental results, using a combline mockup, agree well with 3D modeling efforts including resonant frequency alignment and amplitudes. These efforts have been expanded into an endeavor to optimize the combline design using both time and frequency ... continued below

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12 p.

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Nelson, S.D.; Kamin, G. & Van Maren, R. May 15, 1995.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 13 times . More information about this article can be viewed below.

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Description

The combline antenna for plasma heating, as proposed by General Atomics, has unique potential for solving many plasma drive problems. The benefit of the combline design is the utilization of the coupling between elements that avoids a more cumbersome multidrive system. This design is being investigated using computational EM modeling codes in the 100-400 MHz band using resources at General Atomics and LLNL. Preliminary experimental results, using a combline mockup, agree well with 3D modeling efforts including resonant frequency alignment and amplitudes. These efforts have been expanded into an endeavor to optimize the combline design using both time and frequency domain codes. This analysis will include plasma coupling but to date has been limited to antenna effects. The combline antenna system is modeled in 3D using a combination of computational tools in the time domain, for temporal feature isolation purposes, and in the frequency domain, for resonant structure analysis. Both time and frequency domain modeling details include the Faraday shield elements, the strap elements, and the feed structure.

Physical Description

12 p.

Notes

OSTI as DE95016061

Source

  • 11. topical conference on radio frequency in plasmas, Palm Springs, CA (United States), 17-19 May 1995

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  • Other: DE95016061
  • Report No.: UCRL-JC--121398
  • Report No.: CONF-9505105--10
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 90664
  • Archival Resource Key: ark:/67531/metadc794847

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  • May 15, 1995

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  • Dec. 19, 2015, 7:14 p.m.

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  • Feb. 16, 2016, 3:18 p.m.

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Nelson, S.D.; Kamin, G. & Van Maren, R. Combline antenna modeling for plasma heating, article, May 15, 1995; California. (digital.library.unt.edu/ark:/67531/metadc794847/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.