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Abstract

As supported by present experimental results, the Lower-hybrid waves appear as a good candidate for the heating of the reactor plasma to ignition since it has now been demonstrated in relevant ranges of power density, pulse duration, plasma density, magnetic field though still at moderate plasma temperatures. Lower-hybrid waves are the most efficient presently demonstrated means of producing non-inductive current drive. However, the efficiency expected for a reactor during the burn is still insufficient to reach steady state operation. The various functions to be assigned to non-inductive current drive in the reactor - namely plasma and current start-up; current ramp-up, transformer recharging, current maintenance without ohmic drive, influence on the plasma stability - have been experimentally demonstrated. A favourable influence on confinement time the behaviour of impurities has been reported. The understanding of the physics of the Lower-hybrid heating and current drive has reached a level allowing a reasonable confidence in the extrapolations to the reactor conditions. Present-days technology ensures availability for power generation and transmission, and workable solutions appear possible for problems identified in the integration of a power LH system in the reactor.

Additional information

Authors: WEGROWE J G THE NET TEAM, C/O MAX-PLANCK-INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY), THE NET TEAM, C/O MAX-PLANCK-INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY)
Bibliographic Reference: COURSE AND WORKSHOP ON APPLICATIONS OF RF WAVES TO TOKAMAK PLASMAS, VILLA MONASTERO VARENNA (ITALY), SEPT. 5- 14, 1985 PP. 644-665, VOL. II 908 P., 1985, VOL. I AND VOL. II WRITE TO MONOTYPIA FRANCHI, VIALE UMBRIA 28/C, 06012 CITTA DI CASTELLO, PERUGIA (I
Record Number: 1989124101300 / Last updated on: 1987-01-01
Category: PUBLICATION
Available languages: en
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