JET: EUROfusion's flagship device

Interior of JET with its new ITER-like wall of tungsten and beryllium; credit: UKAEA

JET, the Joint European Torus, is the largest and most successful fusion experiment in the world and one of the key research facilities of the European Fusion Programme. JET is based at the UKAEA campus in Culham, UK and is collectively used under EUROfusion’s management by more than 31 European laboratories. Over 350 scientists and engineers from all over Europe contribute to the JET programme.

In 2023 JET celebrates its 40th year of operations. Our researchers looked back on numerous important milestones set at JET, such as preparatory work for the international ITER facility during the 2021 experiments using the deuterium-tritium fuel planned for ITER and future fusion power plants.

Research at JET

JET serves as the "test-bed" for ITER and is often referred to as "Little ITER".

JET's Salient Features

From its ITER-like wall to being the only machine that currently operates with a deuterium-tritium fuel, read more about JET's salient features.

JET History

From its first experimental campaign on 25 June 1983, JET has come a long way. Get an overview of some of the milestones it achieved.