Parametric analysis of asymmetric vertical displacement events at JET

摘要: A small fraction of plasma disruptions at JET lead to a significant horizontal displacement in the vacuum vessel. This can threaten integrity vessel and, particular, various attachments such as main vertical ports and neutral injector boxes. These events are referred asymmetric disruption (AVDEs). In this paper we attempt identify associations between parameters large displacements by analysis data from some hundreds disruptive pulses. As far pre-disruption concerned, amplitude sideways shows trend with boundary safety factor poloidal beta. No link has been identified triangularity or elongation. With regard during disruption, show instability mode n = 1, current quench rate minimum value factor. reliable short cut select high loads estimate effects on using proposed. Hardly any practical operational space found be wholly safe triggering displacements.