Higher fusion power gain with profile control in DIII-D tokamak plasmas

  • E. A. Lazarus
  • , G. A. Navratil
  • , C. M. Greenfield
  • , E. J. Strait
  • , M. E. Austin
  • , K. H. Burrell
  • , T. A. Casper
  • , D. R. Baker
  • , J. C. Deboo
  • , E. J. Doyle
  • , R. D. Durst
  • , J. R. Ferron
  • , C. B. Forest
  • , P. Gohil
  • , R. J. Groebner
  • , W. W. Heidbrink
  • , R. Hong
  • , A. W. Howald
  • , C. L. Hsieh
  • , A. W. Hyatt
  • G. L. Jackson, J. Kim, L. L. Lao, C. J. Lasnier, A. W. Leonard, J. M. Lohr, R. J. La Haye, R. Maingi, R. L. Miller, M. Murakami, T. H. Osborne, L. J. Perkins, C. C. Petty, C. L. Rettig, T. L. Rhodes, B. W. Rice, S. A. Sabbagh, D. P. Schissel, J. T. Scoville, R. T. Snider, B. W. Stallard, R. D. Stambaugh, H. E. St. John, R. E. Stockdale, P. L. Taylor, T. S. Taylor, D. M. Thomas, A. D. Turnbull, M. R. Wade, R. D. Wood, D. G. Whyte

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

Strong shaping, favourable for stability and improved energy confinement, together with a significant expansion of the central region of improved confinement in negative central magnetic shear target plasmas, increased the maximum fusion power produced in DIII-D by a factor of 3. Using deuterium plasmas, the highest fusion power gain, the ratio of fusion power to input power, Q, was 0.0015, corresponding to an equivalent Q of 0.32 in a deuterium-tritium plasma, which is similar to values achieved in tokamaks of larger size and magnetic field. A simple transformation relating Q to the stability parameters is presented.

Original languageEnglish
Pages (from-to)7-12
Number of pages6
JournalNuclear Fusion
Volume37
Issue number1
DOIs
StatePublished - Jan 1997

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