The geometry of ICRF - Induced wave-SOL Interaction

L Colas (1) , G Urbanczyk (1) , M Goniche (1) , J Hillairet (1) , J.-M Bernard (1) , C Bourdelle (1) , N Fedorczak (1) , C Guillemaut (1) , W Helou (2) , V Bobkov (3) , R Ochoukov (3) , Ph Jacquet (4) , E Lerche (4) , X Zhang (5) , C Qin (5) , C C Klepper (6) , C Lau (6) , B Vancompernolle (7) , S J Wukitch (8, 9) , Y Lin (8, 9) , M Ono (10)

1 IRFM - Institut de Recherche sur la Fusion par confinement Magnétique
2 ITER - ITER organization
3 IPP - Max-Planck-Institut für Plasmaphysik [Garching]
4 CCFE - Culham Centre for Fusion Energy
5 CAS - Chinese Academy of Sciences [Beijing]
6 ORNL - Oak Ridge National Laboratory [Oak Ridge]
7 General Atomics [San Diego]
8 Plasma Science and Fusion Center
9 MIT - Massachusetts Institute of Technology
10 PPPL - Princeton Plasma Physics Laboratory

As part of ITPA-IOS activities, this contribution reviews recent experimental characterization of ICRF-induced SOL modifications on various tokamaks worldwide and on the LArge Plasma Device (LAPD) at UCLA. The phenomenology, as observed using a large variety of measurement techniques, is consistent with the expectations from RF-sheath rectification. Emphasis is put on the complex 3D spatial structure of RF-SOL interaction, in relation to the magnetic topology and the spatial distribution of RF currents over the metallic structures. Dependence on the local plasma parameters in the antenna vicinity is also briefly addressed. The final part discusses implications for future devices.

Domaines: Physique [physics]; Physique des plasmas [physics.plasm-ph]

L Colas, G Urbanczyk, M Goniche, J Hillairet, J.-M Bernard, et al.. The geometry of ICRF - Induced wave-SOL Interaction. IAEA FEC 2021 - The 28th IAEA Fusion Energy Conference, May 2021, Nice (E-conférence), France. ⟨cea-03245019⟩