Of all electrons, runaway electrons have long been recognized in the fusion community as a
distinctive population. They now attract special attention as a part of ITER mission …

In 2003, a new electrical breakdown mechanism involving the production of runaway
avalanches by positive feedback from runaway positrons and energetic photons was …

MHD simulations of rapid shutdown scenarios by massive particle injection in DIII-D, Alcator
C-Mod and ITER are performed in order to study runaway electron (RE) transport during …

A drift orbit model for relativistic test electrons has been incorporated into the MARS-F code
(Liu et al 2000 Phys. Plasmas 7 3681), in order to study the runaway electron (RE) behavior …

Disruptions in large tokamaks can lead to the generation of a relativistic runaway electron
beam that may cause serious damage to the first wall. To suppress the runaway beam the …

The dynamics of high energy runaway electrons is analyzed for plasmas with high impurity
content. It is shown that modified collision terms are required in order to account for the …

The phase-space dynamics of runaway electrons is studied, including the influence of loop
voltage, radiation damping, and collisions. A theoretical model and a numerical algorithm for …

Dispersive shell pellet (DSP) injection is modeled with the extended-MHD code NIMROD for
interpretive insight into the results of recent DIII-D DSP experiments and to explore the …

In the EAST tokamak, asymmetrical ring-like runaway electron beams with energy more than
30 MeV and pitch angle about 0.1 were investigated. Those runaway beams carried about …

It is discovered that the tokamak field geometry generates a toroidicity induced broadening
of the pitch-angle distribution of runaway electrons. This collisionless pitch-angle scattering …