Complex Plasma Systems Research Section

概要

Magnetic nuclear fusion energy has some attractive features as a future option for the base-load electrical power source:(1)inherent safety foatures, (2) no long-lifo nuclear waste emission, (3) no greenhouse gas emission during the energy production, (4) huge energy density stored in the fuel source (~90 MWh/g for D-T fuel),(5) abundant source availability spreading all over the Earth, and (6) high nuclear proliferation resistance, in terms of both resources and weapons technologies.

Among various issues to be overcome in physics and en­ gineering fields, we have focused on the problems related to the plasma transport and magneto-hydrodynamics. Spe­ cifically, determination of a magnetic configuration that can efficiently confine high-density plasma at high tem­ perature with a sufficiently long confinement time and de­ veloping diagnostics and control schemes for the high- temperature plasmas in such magnetic fields are regarded as crucial. In these respects, our research section investi­ gates about heating and fueling, confinement and diffu­ sion mechanisms and their diagnostics in a magnetic plasma confinement device, named Heliotron J.

Results in FY2021 featured in this report are about the diagnostic upgrade which is regarded as a key issue for characterizing the transport properties in fusion-relevant magnetic confinement plasmas.

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