Journal article

First Results with the Modified Jet - the Jet Team

Adams, J. M.; Agarici, Y.; Ageladarakis, P.; Alper, B.; Altmann, H.; Andrew, P.; Aliarshad, S.; Bailey, W.; Balet, B.; Baranov, Y.

JET was extensively modified in the 1992/93 shutdown. The new pumped divertor and many new systems were brought into operation early in 1994. Operations have progressed to 4MA plasma current and, with substantial additional heating, H-mode confinement results confirm the expected scaling. The high power handling capability of the pumped divertor with sweeping is estimated at 20MW for 20s. H-mode plasmas have large Type I ELMs. With lower hybrid heating alone, 2MA full current drive has been achieved with good efficiency, with ICRF power, effective heating and direct electron heating have been demonstrated.


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