THE IMPACT OF FIRST JET RESULTS ON THE DEVELOPMENT OF FUSION
In the mid-1970s, when the objectives and parameters of JET were defined, certain problems were identified, for which solutions were needed, before a fusion reactor could be envisaged. These were associated with plasma-wall interactions, the need for additional plasma heating, and the eventual activation of the experimental device. After three years of operation, JET has proved to be the world's best performing device in thermonuclear fusion research, but has also shown that plasma behaviour is even more complex than anticipated. The latest JET results show the many advances made over its operational period. In particular, the especially good confinement and high temperatures achieved with ohmic heating alone have exceeded expectations. However, certain limitations in plasma parameters have been encountered including density limits due to disruption phenomena; peak ion and temperature limitations due to sawtooth oscillations; impurity power losses; and confinement degradation and restricted temperatures with additional heating (in contrast with those reached with ohmic heating alone). The impact of this plasma behaviour on the JET programme and the necessary developments to approach closer to reactor conditions are described. In conclusion, the implications for a future reactor are considered.
Bibliographic Reference: 14TH SOFT CONFERENCE, AVIGNON (FRANCE), SEPT. 8-12, 1986 VOL. 1, PP. 33-41 1895 P., 1986, VOL. 1 AND VOL. 2, ISBN 0 08 034935 8 WRITE TO PERGAMON PRESS, HEADINGTON HILL HALL, OXFORD, OX3 0BW (UK), PRICE: UKL 220 (FOR BOTH VOLS.)
Record Number: 1989126047401 / Last updated on: 1989-01-01
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