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(TH3/4) 3D MHD Simulations of Pellet Injection and Disruptions in Tokamak Plasmas

   
H. R. Strauss 
New York University, New York, NY, USA
 
W. Park , E. Belova , G. Y. Fu 
Princeton Plasma Physics Laboratory, Princeton, NJ, USA
 
L. E. Sugiyama 
Massachusetts Institute of Technology, Cambridge, MA, USA

Abstract
Nonlinear MHD simulation results of pellet injection  show that MHD forces can accelerate large pellets, injected on the high field side of a tokamak, to the plasma center. Magnetic reconnection can produce a reverse shear q profile. Ballooning instability caused by pellets is also reduced by high field side injection. Studies are also reported of the current quench phase of disruptions, which can cause 3D halo currents  and runaway electrons .

     

Read the full paper in PDF format.