Joint European Torus

The Joint European Torus, or JET, is a working magnetically confined plasma physics experiment. It is at Culham Centre for Fusion Energy in Oxfordshire, United Kingdom.
Between 2009 and 2011, JET was shut down to rebuild many of its parts. On 21 December 2021, JET produced 59 megajoules during a five-second pulse, beating its last 1997 record of 21.7 megajoules.