Hottest place in the galaxy... Oxfordshire?

Any Infinite Monkey Cage listeners here? Was listening to this episode on Fusion, and they talked about a nuclear fusion reactor in Oxfordshire.

As I understand it, to enable fusion, you need an extremely hot environment.

In the Oxfordshire reactor, scientists conducted an experiment with temperatures so high, that it momentarily became the hottest place in the solar system. Hotter than the sun.

How cool is that. And I found this paper, of a particularly well-known experiment using the reactor (scientists were able to generate a record amount of energy from fusion).