1. Recent ECH and LH current drive studies at Culham
- Author
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P. R. Collins, S. J. Fielding, N.R. Ainsworth, S. Arshad, A. C. Riviere, T. C. Hender, J. Hugill, S.J. Manhood, G. Vayakis, P. C. Johnson, A. N. Dellis, M. W. Alcock, A. W. Morris, O. J. Kwon, M.R. O'Brien, G.F. Matthews, C. N. Lashmore‐Davies, P. R. Simpson, D.C. Robinson, G. A. Whitehurst, R. A. Pitts, B. Lloyd, R. O. Dendy, M. Cox, C. Balkwill, T. Edlington, and Fishpool Gm
- Subjects
Tokamak ,law ,Chemistry ,Cyclotron ,Electric heating ,Limiter ,Plasma ,Electron ,Atomic physics ,Joule heating ,Charged particle ,law.invention - Abstract
For typical reactor conditions lower hybrid (LH) waves are a strong candidate for bulk heating and for profile control via current drive in the outer regions of the plasma. However, limited accessibility, strong electron damping and the need to avoid damping on fusion‐produced alpha particles probably exclude the use of such a scheme in the plasma core. Therefore, it is likely that lower hybrid heating/current drive in the outer regions of the plasma will be combined with either ECRF, ICRF or NBI in the core. Electron cyclotron (EC) waves are particularly attractive since they offer the possibility of localised absorption and in addition may be used to facilitate low voltage start‐up of the tokamak. Recent experimental and theoretical research on current drive at Culham has concentrated on some of the outstanding critical issues concerning the reactor applications of LH and EC waves. These include studies of the interaction of lower hybrid waves with energetic ions including alpha particles, the effect of...
- Published
- 1989