Jet experiments with 120 kev3he and4he neutral beam injection and neutron diagnostic applications

  • F. B. Marcus
  • , D. V. Bartlett
  • , V. Bhatnagar
  • , A. J. Bickley
  • , M. Bures
  • , D. J. Campbell
  • , C. D. Challis
  • , J. Christiansen
  • , S. Conroy
  • , J. G. Cordey
  • , W. Core
  • , S. Corti
  • , G. Cottrell
  • , H. De Esch
  • , L. De Kock
  • , T. Elevant
  • , H. Falter
  • , R. Giannella
  • , R. D. Gill
  • , A. Gondhalekar
  • N. A. Gottardi, R. Hemsworth, O. N. Jarvis, T. T.C. Jones, R. Konig, P. Lomas, M. Loughlin, C. Lowry, G. Magyar, W. Mandl, P. Massmann, P. Morgan, H. Morsi, P. Nielsen, W. Obert, J. O’ Rourke, R. Prentice, G. Sadler, P. Smeulders, M. Stamp, D. F. Start, D. Stork, D. Summers, H. Summers, L. Svensson, A. Tanga, A. Taroni, P. R. Thomas, E. Thompson, B. Tubbing, F. Tibone, P. Van Belle, M. Von Hellermann, N. Watkins, J. M. Adams, L. G. Eriksson, J. Jacquinot

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Preliminary experiments were carried out in the Joint European Torus (JET) using 120 keV helium (He) neutral beam injection (NB1), Injected power levels up tn 5 MW with3He and 7 MW with4Hc, lasting up to 3 s were reached. The 3 s helium NBI produced efficient ion heating and similar global and local energy confinements to those obtained with deuterium (D) NBI, in both limiter and X-point plasma geometries, in L-mode and H-mode plasma regimes. The elimination of beam-plasma and beam- beam fusion reactions by replacing D NBI with He NBI extended the range for measuring ion temperatures with the JET neutron profile monitor and neutron spectrometers.

Original languageEnglish
Pages (from-to)1371-1378
Number of pages8
JournalPlasma Physics and Controlled Fusion
Volume34
Issue number8
DOIs
StatePublished - Aug 1992
Externally publishedYes

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