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Energy Magnetohydrodynamics Engineering Lab
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A lab that studies the confinement of high-temperature plasma toward realizing fusion power generation.
AboutAbout the lab
Aiming for limitless, environmentally friendly energy.
The Watanabe Lab studies the plasma at the center of a fusion power reactor (core plasma), with the aim of realizing fusion power generation reactors.
The lab conducts its research using the supercomputer and the Large Helical Device (LHD) at the National Institute for Fusion Science (Toki, Gifu Prefecture).
The lab combines three approaches: analysis of experimental data, simulation, and the design and construction of measurement instruments.
Research supervision is carried out jointly with researchers at the National Institute for Fusion Science.
Key terms
- Plasma
- A state of gas at very high temperature in which atoms are separated into electrons and ions
- MHD instability
- A phenomenon in which plasma confined by a magnetic field loses its shape like a fluid, degrading confinement
- Tokamak
- A confinement method that holds plasma inside a doughnut-shaped vessel using a current driven through the plasma and an externally applied magnetic field
ResearchResearch themes
The lab conducts research toward achieving the high-temperature, high-pressure plasma required for fusion power generation reactors. Through measurement, experiments, analysis, and simulation, it investigates how magnetohydrodynamic (MHD) instabilities affect plasma confinement, and how to suppress and control them.
*Illustrative imagePlasma stability in helical devices
Using the Large Helical Device (LHD), the world's largest helical-type fusion experimental device, the lab investigates how MHD instabilities affect plasma confinement performance, and how to suppress and control those instabilities.
*Illustrative imageProperties of tokamak plasma
For the core plasma of tokamak-type reactors, such as ITER (International Thermonuclear Experimental Reactor), the lab also works on research issues related to MHD properties, including disruptions.
MembersFaculty
- Visiting ProfessorKiyomasa Watanabe
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Large Helical Device 2014” National Institute for Fusion Science / CC BY-SA 4.0 (cropped)
- Plasma stability in helical devices: “LHD plasma vacuum vessel” National Institute for Fusion Science / CC BY-SA 4.0 (cropped)
- Properties of tokamak plasma: “ITER construction in )” Oak Ridge National Laboratory / CC BY 2.0 (cropped)
- Related lab (Fusion Reactor Engineering Lab): “Baseball II magnetic mirror” Uknown LLNL photographer / Public domain (cropped)
- Related lab (Fusion Plasma Science and Engineering Lab): “U.S. Department of Energy - Science - )” U.S. Department of Energy from United States / Public domain (cropped)
- Related lab (Energy Functional Materials Engineering Lab): “Thin film growth defect” Evavilova / CC BY-SA 4.0 (cropped)
- Related lab (Energy Quantum Materials Science Lab): “Transmission Electron Microscope” Juraj Kubica from Bratislava, Slovakia / CC BY-SA 2.0 (cropped)
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