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Research Activities

Plasma Heating Physics Research Division

High power plasma heating is important and essential for a fusion reactor realizing a high temperature and high density plasma. Our objectives are the development of plasma heating systems and a better understanding of plasma heating physics and properties of the high performance plasmas produced by enhanced heating devices.

Three heating systems are used in the LHD experiments. The first is high-energy Neutral Beam Injection (NBI) heating, a method suitable for high-temperature and high-density plasma production. The second is Ion Cyclotron Range of Frequencies (ICRF) heating, a method suitable for ion heating and steady state operation. The third is Electron Cyclotron Resonance Heating (ECH), a method suitable for electron heating and local plasma heating. Using the plasma-heating devices, we are also studying diagnostics for plasma and for energetic particles.

High-power gyrotron oscillating tube developed by a collaboration with the University of Tsukuba