Long Pulse ICRF Heating Experiment on the LHD

An Ion Cyclotron Range of Frequency (ICRF) heating experiment on the Large Helical Device has opened up a new field for nuclear fusion research. The plasma was sustained for more than I minute by the injected ICRF power only. The injected RF power was 0.8 MW. The plasma stored energy, the line average electron density, the central electron temperature and the ion temperature were ll0 kJ, 1.0 x l0le m-3,2.O keV and 2.0 keV, respectively.