JET AVDE disruption simulations

The JET experiment is a main source of information about the possible effects of disruptions in ITER. JET measurements indicate large forces will be generated on conducting structures surrounding the plasma. It was also found in JET that the halo current, and hence the wall force, rotates during disruptions. This is potentially important if the force oscillations are resonant with the mechanical response of the external structure. MHD disruption simulations using the M3D code were carried out, initialized with equilibrium reconstructions of JET disruption shots. The simulations obtained asymmetric wall force, toroidal rotation, toroidal variation of toroidal current and toroidal magnetic flux, and halo current. The simulations include thermal quench (TQ), vertical displacement event (VDE), and current quench (CQ). The simulations were carried out for much longer times than previous M3D disruption simulations, to accommodate VDE and CQ times.