How did the Koreans and others manage to contain something for 48 seconds that’s X hotter than the sun? I appreciate this is in a ‘tokamak’ but how can any electronics or controls survive this inside the reactor at those temperatures?
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The answer is that we don’t really touch them. A tokamak takes plasma and confines it in a ring-like shape through the use of magnetic fields. As for the rest of the chamber it is a vacuum, through which conduction and convection methods of transferring heat do not work.
You can think of this like holding the extremely hot plasma in a container made of force fields. Electronics and controls are not exposed to the plasma directly so they don’t need to worry about withstanding such temperatures.
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