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Since its inauguration in 1983 in the presence of Her Majesty Queen Elizabeth II, the European tokamak JET has cemented its reputation as "one of the most important machines in the history of fusion energy research," according to Ian Chapman, CEO of the UK Atomic Energy Authority. On 18 January 2022, the machine ran its 100,000th plasma pulse.

JET, for Joint European Torus, is the focal point of the European fusion research program, designed to study fusion in conditions approaching those needed for a power plant. It is the only experiment that can operate with the deuterium-tritium fuel mix that will be used for commercial fusion power (and in °ÄÃÅÁùºÏ²Ê¸ßÊÖ).

In 1997 JET successfully produced a world record 22.5 megajoules of fusion energy and 16 megawatts of fusion power during the first dedicated deuterium-tritium experiments, proving large amounts of power can be produced from fusion.

In 2011 JET was equipped with a new °ÄÃÅÁùºÏ²Ê¸ßÊÖ-like inner wall made of beryllium and tungsten metals, enabling scientists to develop plasma scenarios that resemble as closely as possible those planned for °ÄÃÅÁùºÏ²Ê¸ßÊÖ, investigate the interaction of the plasma with wall materials, and study the accumulation of tungsten from the wall in the plasma core.

In 2021, JET carried out a second full-power run of experiments using deuterium and tritium. Stay tuned: the results from these experiments will be announced in early February 2022.

The JET facilities located at the Culham Centre for Fusion Energy () in Abingdon, Oxfordshire UK, are collectively used by all European fusion laboratories under the . About 350 scientists from EU countries (plus Switzerland, the UK and Ukraine), and more from around the globe, participate in JET experiments each year. CCFE is responsible for operating the facility for fusion researchers and for maintaining and upgrading it. This work is carried out under a contract between the European Commission and the UK Atomic Energy Authority (CCFE's operator). 

The °ÄÃÅÁùºÏ²Ê¸ßÊÖ community congratulates the JET team on its 100,000th pulse!