19th Technical Meeting on Energetic Particles in Magnetic Confinement Systems

Session

EP impact on machine operations and safety

28 Sept 2026, 16:15

Beaulieu Congress and Exhibition Center (Lausanne, Switzerland)

31. Tungsten sputtering due to fast particles in ITER

Antti Snicker (VTT Technical Research Centre of Finland Ltd.)

28/09/2026, 16:15

EP impact on machine operations and safety

Invited

Fast-ion interactions with plasma-facing components remain an important open question for ITER, particularly after the recent transition to a full tungsten first wall. Tungsten sputtering is expected to be mostly caused by the thermal plasma, but lost fast ions such as fusion-born alpha particles may contribute to tungsten sputtering. The extent of fast ion contribution depends on both the...

24. Quantitative assessment of ICRF antenna limiter tiles performance under sustained fast ion heat loads on ASDEX Upgrade

Roman Ochoukov (IPP - Max-Planck-Institut für Plasmaphysik (EU))

28/09/2026, 16:50

EP impact on machine operations and safety

Oral

This study is motivated by the observation of a macroscopic (~10 cm in scale) carbon tile failure in the ion cyclotron range of frequencies (ICRF) limiter structure during a hydrogen minority ion cyclotron heating scenario in D plasma on ASDEX Upgrade (AUG). In this discharge (#42762): the on-axis magnetic field is 2.65 T, the plasma current is 0.36 MA, the core plasma electron density is...

55. Fast-ion heat loads due to static 3D fields and diagnostic design for tokamak power plant

Fabio Camilo de Souza (UKAEA)

28/09/2026, 17:15

EP impact on machine operations and safety

Oral

Future tokamak power-plant prototypes will rely on alpha heating to sustain burning-plasma conditions. However, the transport and loss of a minority of energetic alpha particles can lead to significant heat loads on plasma-facing components (PFCs), which must withstand unprecedented steady-state particle and power fluxes during operation.
The development and validation of reliable workflows...