Ion Bernstein Wave Heating Experiments in HT-7 Superconducting Tokamak

Abstract

Ion bernstein wave (IBW) experiments have been carried out in HT-7 superconducting tokamak in recent years. The electron heating experiments concentrated on deuterium plasma with an injected RF power up to 350 kW. The global heating and the localized heating can be seen clearly by adjusting the ICRF resonance layer positions. The on-axis and the off-axis electron heating were realized by arranging the target plasma parameters properly. Experimental results show that the maximum increment of electron temperature was more than 1 keV, the electron temperature profile was modified by IBW under different plasma conditions and the improvements of both energy and particle confinements have been obtained.