Publication Type
Journal
Journal Name
IEEE Transactions on Plasma Science
Publication Date
Page Numbers
419 to 424
Volume
38
Issue
3
Abstract
Disruptions on ITER present challenges to handle the
intense heat flux, the large forces from halo currents, and the
potential first wall damage from energetic runaway electrons.
Injecting large quantities of material into the plasma during the
disruption can reduce the plasma energy and increase its
resistivity to mitigate these effects. Assessments of the amount of
various mixtures and quantities of material required have been
made to provide collision mitigation of runaway electron
conversion [1], which is the most difficult challenge. The
quantities of material required (~0.5 MPa-m3 for deuterium or
helium gas) are large enough to have implications on the design
and operation of the vacuum system and tokamak exhaust
processing system.
