The Frascati Tokamak Upgrade (FTU) is a tokamak operating at Frascati, Italy. Building on the Frascati Tokamak experiment, FTU is a compact, high-magnetic-field tokamak (Btor = 8 Tesla). It began operation in 1990 and has since achieved operating goals of 1.6 MA at 8 T and average electron density greater than 4 per cubic meter.The poloidal section of FTU is circular, with a limiter.
| major radius | 0.935 m | |
| minor radius | 0.30 m | |
| magnetic field | < 8 T | |
| plasma current | < 1.6 MA | |
| discharge duration | 1.7 s |