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A small fraction of plasma disruption at JET lead to a significant horizontal displacement of the vacuum vessel. This can threaten the integrity of the vessel and, in particular, of various vessel attachments such as the main vertical ports and the neutral injector boxes. These events are referred to as AVDEs. In this paper we attempt identify associations between plasma parameters and large asymmetric vessel displacements, by analysis of data from some hundreds of disruptive JET pulses. As far as the pre-disruption parameters are concerned, the amplitude of vessel sideways displacements shows a trend with the boundary safety factor and the polidal beta.

Additional information

Authors: NOLL P, JET Joint Undertaking, Abingdon (GB)
Bibliographic Reference: Report: JET-P(99)50, 11pp.
Availability: Available from the Librarian, JET Joint Undertaking, Abingdon (GB)
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