Avoidance of the harmful effects of runaway electrons (REs) in plasma-terminating
disruptions is pivotal in the design of safety systems for magnetic fusion devices. Here, we …

In high-current tokamak devices such as ITER, a runaway avalanche can cause a large
amplification of a seed electron population. We show that disruption mitigation by impurity …

A new three-dimensional electromagnetic modeling tool (ThinCurr) has been developed
using the existing PSI-Tet finite-element code in support of conducting structure design work …

A challenging aspect of the description of a tokamak disruption is evaluating the hot tail
runaway electron seed that emerges during the thermal quench. This problem is made …

Alfvénic modes in the current quench (CQ) stage of the tokamak disruption have been
observed in experiments. In DIII-D the excitation of these modes is associated with the …

Understanding the formation of start-up runaway electrons (REs) is essential to ensure
successful plasma initiation in ITER. The design of ITER start-up scenarios requires not only …

Stand-off runaway electron termination by injected tungsten particulates offers a plausible
option in the toolbox of disruption mitigation. Tungsten is an attractive material choice for this …

An adjoint formulation leveraging a physics-informed neural network (PINN) is employed to
advance the density moment of a runaway electron (RE) distribution forward in time. A …

Steering tokamak plasmas is commonly viewed as a way to avoid disruptions and runaway
electrons. Plasma steering sounds as safe as driving to work but will be shown to more …

The generation of relativistic electrons in tokamak plasmas has been the subject of
extensive research due to their intrinsic interest as well as the threat they pose to reactor …