Nuclear Fusion XVI: The Big Three Tokamaks

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 devices. 

The Joint European Torus (JET) in the UK, the JT-60 in Japan, and
the Tokamak Fusion Test Reactor (TFTR) in the US. 

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