Negative-potential operation of TMX-Upgrade

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Description

A tandem-mirror configuration can be created by combining hot electron end-cell plasmas with neutral-beam pumping. A region of large negative potential formed in each end cell confines electrons in the central cell. The requirement of charge neutrality causes the central-cell potential to become negative with respect to ground in order to equate ion loss to electron loss. Start-up and formation of the axial potential distribution, neutral-beam pumping, hot electron feed, electron-cyclotron-resonance heating (ECRH) power requirements, and stability are discussed in general terms. Each of these considerations impose constraints on the operation of TMX as a negative machine. The start-up requirements ... continued below

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Pages: 165

Creation Information

Poulsen, P.; Allen, S.L. & Baldwin, D.E. April 6, 1982.

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Description

A tandem-mirror configuration can be created by combining hot electron end-cell plasmas with neutral-beam pumping. A region of large negative potential formed in each end cell confines electrons in the central cell. The requirement of charge neutrality causes the central-cell potential to become negative with respect to ground in order to equate ion loss to electron loss. Start-up and formation of the axial potential distribution, neutral-beam pumping, hot electron feed, electron-cyclotron-resonance heating (ECRH) power requirements, and stability are discussed in general terms. Each of these considerations impose constraints on the operation of TMX as a negative machine. The start-up requirements and scenario are also presented. Work on the design and analysis of negative tandems is continuing. The status of work to date is presented here with problem areas for future work identified.

Physical Description

Pages: 165

Notes

NTIS, PC A08/MF A01.

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  • Other Information: Portions of document are illegible

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  • Other: DE82012431
  • Report No.: UCID-19341
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/5182799 | External Link
  • Office of Scientific & Technical Information Report Number: 5182799
  • Archival Resource Key: ark:/67531/metadc1060977

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • April 6, 1982

Added to The UNT Digital Library

  • Jan. 22, 2018, 7:23 a.m.

Description Last Updated

  • Jan. 31, 2018, 6:32 p.m.

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Poulsen, P.; Allen, S.L. & Baldwin, D.E. Negative-potential operation of TMX-Upgrade, report, April 6, 1982; California. (digital.library.unt.edu/ark:/67531/metadc1060977/: accessed October 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.