Comparative electron temperature measurements of Thomson scattering and electron cyclotron emission diagnostics in TCABR plasmas a

摘要

We present the first simultaneous measurements of the Thomson scattering and electron cyclotron emission radiometer diagnostics performed at TCABR tokamak with Alfvén wave heating. The Thomson scattering diagnostic is an upgraded version of the one previously installed at the ISTTOK tokamak, while the electron cyclotron emission radiometer employs a heterodyne sweeping radiometer. For purely Ohmic discharges, the electron temperature measurements from both diagnostics are in good agreement. Additional Alfvén wave heating does not affect the capability of the Thomson scattering diagnostic to measure the instantaneous electron temperature, whereas measurements from the electron cyclotron emission radiometer become underestimates of the actual temperature values. © 2010 American Institute of Physics Article Outline INTRODUCTION MEASUREMENT USING THE ELECTRON CYCLOTRON EMISSION RADIOMETER TEMPERATURE MEASUREMENT USING THE THOMSON SCATTERING DIAGNOSTIC TCABR ALFVÉN WAVE HEATING PROGRAM SIMULTANEOUS ECE AND TSD MEASUREMENTS CONCLUSIONS