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L-H transition threshold studies in helium plasmas at JET

  • E. R. Solano
  • , G. Birkenmeier
  • , E. Delabie
  • , C. Silva
  • , J. C. Hillesheim
  • , A. Boboc
  • , I. S. Carvalho
  • , P. Carvalho
  • , M. Chernyshova
  • , T. Craciunescu
  • , E. De La Luna
  • , J. M. Fontdecaba
  • , R. Henriques
  • , P. Jacquet
  • , I. Jepu
  • , A. Kappatou
  • , D. King
  • , M. Lennholm
  • , E. Lerche
  • , E. Litherland-Smith
  • A. Loarte, M. Maslov, F. Parra Diaz, V. Parail, E. Pawelec, F. G. Rimini, A. Shaw, P. Siren, G. Szepesi, Štancar, E. Tholerus, S. Vartanian, B. Viola, H. Weisen

Research output: Contribution to journalArticlepeer-review

Abstract

We present a study of the power threshold for L-H transitions (P LH) in almost pure helium plasmas, obtained in recent experiments at JET with an ITER-like wall (Be wall and W divertor). The most notable new result is that the density at which P LH is minimum, is considerably higher for helium than for deuterium and hydrogen plasmas. We discuss the possible implications for ITER in its pre-fusion operating power phase.

Original languageEnglish (US)
Article number124001
JournalNuclear Fusion
Volume61
Issue number12
DOIs
StatePublished - Dec 2021
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

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