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Atoms 2018, 6(4), 69; https://doi.org/10.3390/atoms6040069

Advanced Helical Plasma Research towards a Steady-State Fusion Reactor by Deuterium Experiments in Large Helical Device

1
National Institute for Fusion Science, National Institutes of Natural Sciences, 322-6 Oroshi, Toki 509-5292, Japan
2
SOKENDAI (The Graduate University for Advanced Studies), 322-6 Oroshi, Toki 509-5292, Japan
Received: 3 October 2018 / Revised: 3 December 2018 / Accepted: 4 December 2018 / Published: 8 December 2018
(This article belongs to the Special Issue SPIG2018)
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Abstract

The Large Helical Device (LHD) is one of the world’s largest superconducting helical system fusion-experiment devices. Since the start of experiments in 1998, it has expanded its parameter regime. It has also demonstrated world-leading steady-state operation. Based on this progress, the LHD has moved on to the advanced research phase, that is, deuterium experiment, which started in March 2017. During the first deuterium experiment campaign, an ion temperature of 10 keV was achieved. This was a milestone in helical systems research: demonstrating one of the conditions for fusion. All of this progress and increased understanding have provided the basis for designing an LHD-type steady-state helical fusion reactor. Moreover, LHD plasmas have been utilized not only for fusion research, but also for diagnostics development and applications in wide-ranging plasma research. A few examples of such contributions of LHD plasmas (spectroscopic study and the development of a new type of interferometer) are introduced in this paper. View Full-Text
Keywords: Large Helical Device (LHD); deuterium experiment; ion temperature of 10 keV; plasma research; spectroscopic study; dispersion interferometer Large Helical Device (LHD); deuterium experiment; ion temperature of 10 keV; plasma research; spectroscopic study; dispersion interferometer
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Takeiri, Y. Advanced Helical Plasma Research towards a Steady-State Fusion Reactor by Deuterium Experiments in Large Helical Device. Atoms 2018, 6, 69.

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