Author: Nathaniel M Ferraro
Requested Type: Poster
Submitted: 2016-02-17 07:24:50
Co-authors: S.C.Jardin, D.Pfefferle, C.E.Myers, L.L.Lao
Princeton Plasma Physics Laboratory
PO Box 451
Princeton, NJ 08543-0
Disruptive instabilities in tokamaks are often characterized by large and rapid displacements of the plasma, and strong interaction between and surrounding conducting structures. The resistive wall model implemented in M3D-C1, combined with an implicit time advance that allows simulations over transport timescales, allows an accurate description of these dynamics. We report progress in using this capability to model vertical displacement events, including the non-axisymmetric instabilities arising during the current quench phase of the disruption. Plasma current spikes and halo currents are observed in the simulations, and may be compared to experimental measurements. The dependence of these currents on the wall resistivity and geometry is investigated. We also report progress and plans for using this modeling capability to address other disruptive instabilities, including resistive wall modes and mode-locking.