Reversed Field Pinch in Japan; FusDIS 2026 snapshot.
RELAX is a fusion facility or design in Japan, with listed operator/developer Kyoto Institute of Technology. In the user-supplied 2026 IAEA FusDIS table snapshot, it is classified as Reversed Field Pinch with status Operating and public ownership.
Overview
FusDIS categorizes the project as an experimental device. The reported status describes the supplied snapshot, not an independently verified construction milestone or scientific achievement.
Historical technical parameters
Parameters below are drawn from the IAEA 2022 survey and are not asserted to be current in 2026:
- Major radius: 0.5 m
- Minor radius: 0.25 m
Source
IAEA Fusion Device Information System (FusDIS), user-supplied 2026 table snapshot. Any historical technical parameters are attributed to World Survey of Fusion Devices 2022.