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VERSION:2.0
PRODID:-//Memento EPFL//
BEGIN:VEVENT
SUMMARY:Nonlinear ideal MHD simulations of plasma eruptions: towards a pre
 dictive model for ELM size
DTSTART:20131025T143000
DTEND:20131025T153000
DTSTAMP:20260921T172134Z
UID:2b98c634d03b715658683136273e2f35b309ee094b5c359c3a911112
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. H. Wilson\nUniversity of York\, York\, UK\nNonlinear ide
 al MHD simulations for the gravitational instability in a plasma slab will
  be reported\, which show four phases: an initial transient\, a linear pha
 se\, a "quasi-linear" phase and an eruption. We compare simulations close 
 to linear marginal stability with those deeper into the unstable region an
 d find differences in the quasi-linear phase\, where a reduction in the in
 stantaneous growth rate is found compared to the linear regime\, prior to 
 the subsequent eruption. Hints of a subcritical instability driven by nonl
 inear effects are found in this quasi-linear phase\, which suggest a new p
 redictive model for ELM size.\nPreliminary results for the new model\, whi
 ch retains full tokamak geometry\, will be presented.
LOCATION:PPB 017
STATUS:CONFIRMED
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