Global stability study of the ultra low aspect ratio tokamak, ULART

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By introducing a slender current carrying conductor through the geometric center axis of the Tokyo University TS-3 device, the authors have generated ultra low aspect ratio tokamak (ULART) configurations with aspect ratio as low as 1.05. In this extreme limit they study the transition of the spheromak (q{sub edge} = 0, I{sub tf} = 0) to a ULART plasma (q{sub edge} = 2--20). The authors investigate the global MHD characteristics of ULART by comparing theoretical results with the experimental data obtained. A small current in the center conductor (compared with the plasma current) is found to significantly improve the overall ... continued below

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16 p.

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Yamada, M.; Pomphrey, N.; Morita, A.; Ono, Y. & Katsurai, M. February 1, 1996.

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Description

By introducing a slender current carrying conductor through the geometric center axis of the Tokyo University TS-3 device, the authors have generated ultra low aspect ratio tokamak (ULART) configurations with aspect ratio as low as 1.05. In this extreme limit they study the transition of the spheromak (q{sub edge} = 0, I{sub tf} = 0) to a ULART plasma (q{sub edge} = 2--20). The authors investigate the global MHD characteristics of ULART by comparing theoretical results with the experimental data obtained. A small current in the center conductor (compared with the plasma current) is found to significantly improve the overall MHD stability characteristics of the formed plasmas by effectively stabilizing the global tilt/shift mode. Theoretical calculations of the threshold toroidal field current required for stability and the growth rates of the tilt/shift modes agree well with the TS-3 data.

Physical Description

16 p.

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INIS; OSTI as DE96006346

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  • Other Information: PBD: Feb 1996

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  • Other: DE96006346
  • Report No.: PPPL--3161
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/206598 | External Link
  • Office of Scientific & Technical Information Report Number: 206598
  • Archival Resource Key: ark:/67531/metadc664919

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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

  • February 1, 1996

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • April 15, 2016, 5:32 p.m.

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Yamada, M.; Pomphrey, N.; Morita, A.; Ono, Y. & Katsurai, M. Global stability study of the ultra low aspect ratio tokamak, ULART, report, February 1, 1996; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc664919/: accessed October 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.