Time-Scales for Non-Inductive Current Buildup in Low-Aspect-Ratio Toroidal Geometry

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Description

The fundamental differences between inductive and non-inductive current buildup are clarified and the associated time-scales and other implications are discussed. A simulation is presented whereby the plasma current in a low-aspect-ratio torus is increased primarily by the self-generated bootstrap current with only 10% coming from external current drive. The maximum obtainable plasma current by this process is shown to scale with the toroidal field strength. The basic physics setting the time-scales can be obtained from a 1D analysis. Comparisons are made between the timescales found here and those reported in the experimental literature.

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605 Kilobytes pages

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Jardin, S.C. November 1, 1999.

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Description

The fundamental differences between inductive and non-inductive current buildup are clarified and the associated time-scales and other implications are discussed. A simulation is presented whereby the plasma current in a low-aspect-ratio torus is increased primarily by the self-generated bootstrap current with only 10% coming from external current drive. The maximum obtainable plasma current by this process is shown to scale with the toroidal field strength. The basic physics setting the time-scales can be obtained from a 1D analysis. Comparisons are made between the timescales found here and those reported in the experimental literature.

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605 Kilobytes pages

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INIS; OSTI as DE00014884

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  • Other Information: PBD: 1 Nov 1999

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  • Report No.: PPPL-3393
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/14884 | External Link
  • Office of Scientific & Technical Information Report Number: 14884
  • Archival Resource Key: ark:/67531/metadc620285

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Office of Scientific & Technical Information Technical Reports

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  • November 1, 1999

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • April 15, 2016, 9:56 p.m.

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Jardin, S.C. Time-Scales for Non-Inductive Current Buildup in Low-Aspect-Ratio Toroidal Geometry, report, November 1, 1999; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc620285/: accessed December 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.