Compact tokamak reactors. Part 1 (analytic results)

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We discuss the possible use of tokamaks for thermonuclear power plants, in particular tokamaks with low aspect ratio and copper toroidal field coils. Three approaches are presented. First we review and summarize the existing literature. Second, using simple analytic estimates, the size of the smallest tokamak to produce an ignited plasma is derived. This steady state energy balance analysis is then extended to determine the smallest tokamak power plant, by including the power required to drive the toroidal field, and considering two extremes of plasma current drive efficiency. The analytic results will be augmented by a numerical calculation which permits ... continued below

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59 p.

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Wootton, A. J.; Wiley, J. C.; Edmonds, P. H. & Ross, D. W. September 13, 1996.

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Description

We discuss the possible use of tokamaks for thermonuclear power plants, in particular tokamaks with low aspect ratio and copper toroidal field coils. Three approaches are presented. First we review and summarize the existing literature. Second, using simple analytic estimates, the size of the smallest tokamak to produce an ignited plasma is derived. This steady state energy balance analysis is then extended to determine the smallest tokamak power plant, by including the power required to drive the toroidal field, and considering two extremes of plasma current drive efficiency. The analytic results will be augmented by a numerical calculation which permits arbitrary plasma current drive efficiency; the results of which will be presented in Part II. Third, a scaling from any given reference reactor design to a copper toroidal field coil device is discussed. Throughout the paper the importance of various restrictions is emphasized, in particular plasma current drive efficiency, plasma confinement, plasma safety factor, plasma elongation, plasma beta, neutron wall loading, blanket availability and recirculating electric power. We conclude that the latest published reactor studies, which show little advantage in using low aspect ratio unless remarkably high efficiency plasma current drive and low safety factor are combined, can be reproduced with the analytic model.

Physical Description

59 p.

Notes

INIS; OSTI as DE97000626

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  • Other Information: PBD: 13 Sep 1996

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  • Other: DE97000626
  • Report No.: DOE/ER/54241--163
  • Report No.: FRCR--484
  • Grant Number: FG03-94ER54241
  • DOI: 10.2172/393331 | External Link
  • Office of Scientific & Technical Information Report Number: 393331
  • Archival Resource Key: ark:/67531/metadc683438

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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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  • September 13, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • Nov. 19, 2015, 4:09 p.m.

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Wootton, A. J.; Wiley, J. C.; Edmonds, P. H. & Ross, D. W. Compact tokamak reactors. Part 1 (analytic results), report, September 13, 1996; United States. (digital.library.unt.edu/ark:/67531/metadc683438/: accessed December 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.