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The History of Fusion
In the UK, for instance, in the late 1950s we had this device called a Zentpinch machine. It was essentially a tube filled with deuterium gas that had a coil of wire running through it. And then you had a magnetic field that essentially pinched the plasma away from the walls. The origins of that machine were for research into weapons, but it soon became clear that this was telling us things about plasmas. So there was another cylindrical device that the UK used. I'd say that the sort of first big one, if you like, was a device called Zeta, which stood for the zero energy thermonuclear assembly. This was started