Plasma coupling test of the RF heating system in JT-60

Abstract Plasma coupling tests of the RF heating system in JT-60 were successfully performed at JAERI prior to the substantial injection for the plasma heating experiment. About 24 MW LHRF at 2 GHz band and 6 MW ICRF at 120 MHz band system were installed in JT-60. The total system is remotely controlled via a mini-computer, which is linked with the central control system named “ZENKEI” and “CAMAC” systems. The RF power and phase difference can be controlled according to a set preprogram and the plant data can be collected and recorded during RF injection. These are carried out at both LHRF and ICRF injections and simultaneous NBI injection. It is shown that this RF heating system can contribute to both LHRF and ICRF heating experiments for JT-60.