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This paper presents results of extensive analysis of mode excitation observed during the operation of the Alfven Eigenmode Active Diagnostic (AEAD) in the JET tokamak during the 2019-2020 deuterium campaign. Six of eight toroidally spaced antennas, each with independent power and phasing, were successful in actively exciting stable MHD modes in 479 plasmas. In total, magnetic resonances were detected with up to fourteen fast magnetic probes. In this work, we present the calculations of resonant frequencies f(0), damping rates gamma < 0, and toroidal mode numbers n, spanning the parameter ranges f(0) approximate to 30-250 kHz, -gamma approximate to 0-13 kHz, and vertical bar n vertical bar
Olivier Sauter, Stefano Coda, Federico Alberto Alfredo Felici, Antoine Pierre Emmanuel Alexis Merle, Cristian Galperti, Adriano Mele, Alessandro Tenaglia
Ivo Furno, Philippe Frédérique Bruno Guittienne, Rémy Jacquier, Renat Karimov