Measurement of Electron Cyclotron Emission from JIPP T-II Plasma

Abstract
A rapid-scanning Fourier transform spectrometer has been developed to measure the electron cyclotron emission from JIPP T-II plasma. The electron temperature profiles and their time evolution have been obtained from measurements of the second harmonic electron cyclotron radiation emitted perpendicular to the magnetic field. Based on the absolute calibration of the spectrometer, absolute values of the electron temperature are obtained independently of Thomson scattering, and the values are within 30% of those with Thomson scattering.