Experimental results with ICRF on HANBIT mirror device.

ICRF is routinely used for plasma production in HANBIT mirror machine with a slot antenna. Second ICRF system has been installed for ion heating with slow wave in the central cell. Initial experiments showed electron temperature increases in the edge region. ICRF was also found to be very effective to stabilize the interchange mode by inducing ponderomotive force. Without any stabilizing mechanisms, a very stable plasma can be obtained with ICRF only. A simulation code has been developed to understand the HANBIT ICRF discharges and the electric field data calculated from this code is used for estimating ponderomotive forces. The results show qualitatively good agreement with experimental observations. [ABSTRACT FROM AUTHOR]