May 23, 2019
At the start of the tokamak revolution, there was a huge
proliferation of different designs for tokamaks from universities
and establishments around the world - but gradually, as it became
clear that making progress would require larger and larger
machines, these efforts broadly ended up concentrated in three main
The Joint European Torus (JET) in the UK, the JT-60 in Japan, and the Tokamak Fusion Test Reactor (TFTR) in the US.