Electron cyclotron resonance heating in spherical plasmas: O–X–EBW mode conversion in MAST

Using a full wave solution, the O–X–EBW mode conversion is examined for density and magnetic profiles in MAST. The effects of magnetic shear and the sharp density pedestal for H-mode operation are considered with an eye to understanding both electron cyclotron emission (ECE) and electron cyclotron resonance heating (ECRH).