Large Helical Device

The Large Helical Device stands as a superconducting stellarator with a major radius of 3.9 meters and operates with a magnetic field strength of 3.0 teslas.

The facility began operating in 1998 after construction commenced in 1990, marking a substantial advancement in Japanese fusion research and nuclear science development.

Scientists and researchers from multiple countries collaborate at this facility to study plasma confinement methods and advance global fusion energy research.

The device implements three heating methods: neutral beam injection, ion cyclotron radio frequency, and electron cyclotron resonance heating to maintain plasma temperatures.

The facility features a specialized helical divertor heat system that manages the plasma exhaust using large helical coils, controlling the stochastic layer between confined plasma.

Location: Toki

GPS coordinates: 35.32611,137.16861

Latest update: June 25, 2025 14:21