Japan Japan · Hongō · 35.713, 139.762 (approximate location)

UTST

UTST, a fusion device (tokamak) in Hongō, Japan, operated by The University of Tokyo. Operating.

It is one of the 19 research reactors operating in Japan.

Country
Japan
City
Hongō
Type
Fusion device · Tokamak
Confinement
Spherical Tokamak
Operator
The University of Tokyo
Status
Operating
First plasma
—

Data: IAEA FusDIS · updated on Sep 21, 2026

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