19th Technical Meeting on Energetic Particles in Magnetic Confinement Systems

Session

Fast electrons and runaways

2 Oct 2026, 09:00

Beaulieu Congress and Exhibition Center (Lausanne, Switzerland)

14. The Effect of Externally Applied and Self-Excited Waves on Relativistic Electrons

Alexander Battey (Ecole Polytechnique Federale de Lausanne (EPFL), Swiss Plasma Center (SPC), CH-1015 Lausanne, Switzerland)

02/10/2026, 09:00

Synergy EP/turbulence II

Invited

Wave–particle interactions have emerged as a promising pathway for directly affecting runaway electron (RE) dynamics and enabling new mitigation strategies in tokamaks. Recent experiments on the DIII-D tokamak explored both externally launched and self-generated waves that resonantly interact with the RE population.

Experiments utilizing externally launched electron cyclotron (EC) waves...

27. Crested stationary spectra of weak turbulence

Boris Breizman (The University of Texas at Austin)

02/10/2026, 09:35

Synergy EP/turbulence II

Oral

Energetic-particle-driven instabilities in plasmas commonly modify the particle distribution function to establish a balance between the instability drive and the wave-damping rate. This balance can last long in the presence of particle sources and sinks. In such situations, a stationary spectrum of turbulence and the distorted distribution of particles need to be determined self-consistently....

9. Nonlinear coupling between beta-induced Alfvén eigenmodes and toroidal Alfvén eigenmodes in the EAST tokamak

chenxi luo

02/10/2026, 10:00

Synergy EP/turbulence II

Oral

Multiple low-frequency beta-induced Alfvén eigenmodes (BAEs, 10 - 20 kHz) and a high-frequency toroidal Alfvén eigenmode (TAE, 120 - 145 kHz) driven by runaway electrons are simultaneously observed in the EAST low-density Ohmic discharges. A new high-frequency mode (HFM, 100 - 170 kHz), generated by nonlinear coupling between BAEs and TAE, are conclusively identified.
The experiments were...

16. Nonlinear dynamics of resistive hose modes for runaway electron beams in post-disruption tokamak plasmas

Tong Liu (Dalian University of Technology)

02/10/2026, 10:25

Synergy EP/turbulence II

Oral

High-energy relativistic runaway electron (RE) beams emerge during plasma disruptions in tokamaks through avalanche multiplication processes. This phenomenon arises from the synergistic interplay of Dreicer acceleration and knock-on collisions, potentially jeopardizing plasma-facing components through localized energy deposition exceeding 10 MJ/m². Advanced MHD simulations have revealed that...