Development of steady state ICRF heating for Large Helical Device

The high power and steady state ICRF system for the LHD has been being developed and tested. The wide band transmitter having a double coaxial output cavity is constructed and tested. 1.2 MW CW operation was achieved. The water cooled transmission line and tuners have been tested successfully. The fast wave ICRF antenna of the LHD has been designed and the steady state test on the R&D antenna has been carried out.