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 language | English |
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Pages (from-to) | 1371-1378 |
Number of pages | 8 |
Journal | Plasma Physics and Controlled Fusion |
Volume | 34 |
Issue number | 8 |
DOIs | |
State | Published - Aug 1992 |
Externally published | Yes |