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Experiments using deuterium as the feeding gas are planned for the LHD. Since better confinement is expected for deuterium plasmas than for hydrogen plasmas, deuterium experiments enable us to investigate high temperature and high density plasmas closer to fusion conditions in the LHD without enlarging its size. Tritium experiments will never be conducted in the LHD.

Deuterium Experiment Project

The improvement of plasma performance by deuterium experiments has already been confirmed in devices of the Japan Atomic Energy Agency and foreign research laboratories.