The Shoelace antenna: A Device for inductively coupling to low frequency, short wavelength fluctuations in the plasma boundary

Short-wavelength, low-frequency, frequently coherent fluctuations regulate transport across the plasma boundary in all steady-state tokamak confinement regimes of interest for a reactor. In the ideal case, these fluctuations expel particles, especially impurities, without significantly degrading energy confinement. The Shoelace antenna is a novel tool employed on the Alcator C-Mod tokamak designed to couple to such fluctuations inductively.