JET (Joint European Torus)

Fusion Approach
Key Technologies
Tokamak Parameters
Major Radius (m)Minor Radius (m)Plasma Current (MA)Toroidal Magnetic Field (T)Duration (s)
Experimental Results
PublicationDensity (m-3)Temperature (keV)Energy Confinement Time (s)Triple Product (m-3 keV s)
High fusion performance f...
3.3×1019(ion) 4.1×1019(electron)14(electron) 28(ion)5.1×10-14.7×1020
Fusion energy production ...
4.1×1019(ion) 5.1×1019(electron)10.5(electron) 18.6(ion)1.2×1009.2×1020
Fusion energy production ...
3.4×1019(ion) 4.5×1019(electron)11.9(electron) 22(ion)1×1007.5×1020
Fusion energy production ...
2.4×1019(ion) 3.6×1019(electron)9.9(electron) 18.8(ion)9×10-14.1×1020
Publications Describing Device

High fusion performance from deuterium-tritium plasmas in JET

Fusion energy production from a deuterium-tritium plasma in the JET tokamak

The Joint European Torus - Plasma Position and Shape Control

The Joint European Torus: installation, first results and prospects

High resolution Thomson Scattering for JET

Nuclear Fusion Energy for Centurises to Come


JET (Joint European Torus) is a large tokamak DT mixture operated at Culham Centre for Fusion Energy (CCFE) by the UK Atomic Energy Authority (UKAEA) and coordinated by the Eurofusion Consortium. In 1997, JET achieved 16 MW of of fusion power using deuterium-tritium fuel with efficiency (Q) of 0.67.

Affiliated Organizations
In Operation

1983 - present