19th Technical Meeting on Energetic Particles in Magnetic Confinement Systems

Session

Physics of alphas and burning plasmas

29 Sept 2026, 16:00

Beaulieu Congress and Exhibition Center (Lausanne, Switzerland)

72. Alpha Particles without DT: Alternative Routes in Future JT-60SA Plasmas

Rui Coelho (Instituto Superior Tecnico - IPFN)

29/09/2026, 16:00

Physics of alpha particles and burning plasmas

Invited

Future fusion power plants will operate in the burning plasma regime, where a substantial fraction of the plasma heating is provided by fusion-born alpha particles produced in DT reactions. Understanding the generation, slowing down and confinement of these energetic particles is therefore essential and remains a major objective of present experimental, theoretical and modelling efforts in...

22. Aspects of energetic particle physics in future tokamak devices

Philipp Lauber (MPG IPP Garching)

29/09/2026, 16:35

Physics of alpha particles and burning plasmas

Oral

In next-step fusion devices, the physics of energetic particles (EP) will play a prominent role in distinct ways. For fusion power plants, such as DEMO-type or first-of-a-kind devices [1, 2], the self-organization of an alpha-particle heated plasma strongly depends on the transport and cross- scale coupling properties of the EP-driven meso- and background-driven micro-scale fluctuations...

69. Recent progress in modeling and diagnosing energetic particles in the SPARC tokamak

Alex Tinguely

29/09/2026, 17:00

Physics of alpha particles and burning plasmas

Oral

This talk will describe recent progress in modeling and diagnosing energetic particles in the SPARC tokamak, specifically DT-fusion alpha particles and runaway electrons (REs). First, alpha-driven MHD instabilities (such as Toroidal Alfven Eigenmodes) are simulated with several linear and nonlinear hybrid kinetic-MHD codes, including M3D-C1; these show good agreement in predicting a “most...

73. Alpha particle physics in ARC burning plasmas

A. LeViness (Commonwealth Fusion Systems)

29/09/2026, 17:25

Physics of alpha particles and burning plasmas

Oral

The ARC tokamak, currently under design by Commonwealth Fusion Systems, is expected to produce over 1 GW of fusion power in a deeply burning plasma regime with Q > 50.[1] Fusion-produced alphas will carry over 200 MW of power and act as the dominant source of heating in ARC, and if poorly confined, can cause melting or sputtering of the first wall. This work presents an overview of alpha...