The largest fusion device operating in the world today is a machine called JET, which is in the UK.

Demo will be a pre-industrial nuclear fusion reactor based on the knowledge acquired through the Joint European Tourus (JET) and ITER experiences.

The UKAEA programme hopes to design and build the world’s first compact fusion reactor by 2040.

The milestone marks the installation of the first and heaviest component of the ITER fusion machine.

“Fusion energy technology holds great potential to be a safe, clean, reliable energy source, but research and development of fusion technology is often constrained by prohibitive costs,” said Under Secretary of Energy Mark W. Menezes.

The International Atomic Energy Agency (IAEA) and the ITER International Fusion Energy Organisation are to enhance their cooperation in nuclear fusion research and related activities following the signing of an agreement that expands one signed in 2008.

A research centre to support China's push for nuclear fusion power has been approved. It will be able to test large superconducting magnets and filters under operational conditions. The Institute of Plasma Physics of the Chinese Academy of Sciences said that having an integrated research facility for key systems of fusion reactors is "one of the major scientific engineering projects" in the Thirteenth Five-Year Plan.

WNN - The UK and the European Commission signed a contract extension today for the world’s largest fusion research facility, Joint European Torus (JET). The extension secures at least EUR100 million (USD112 million) in additional inward investment from the EU over the next two years and "brings reassurance" for the more than 500 staff at the site in Culham, near Oxford, the Department for Business, Energy & Industrial Strategy (BEIS) said.

WNN - The USA should continue its participation in the International Thermonuclear Experimental Reactor (ITER) project and develop a national research programme towards building a compact pilot plant, according to the National Academies of Sciences, Engineering, and Medicine (NASEM).

WNN - Tokamak Energy announced today that it has achieved plasma temperatures of over 15 million degrees Celsius, hotter than the centre of the Sun. The Oxford, England-based company turned on its ST40 reactor for the first time in April 2017.