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 main reason is that the “hotter than the sun” part is a plasma that’s magnetically confined in the middle of the Tokamak chamber, not touching anything. If the plasma does touch anything, it actually drops in temperature making the reactor less efficient/not functional, so there’s a whole bunch of engineering into not letting that break down.
Also, there are no controls or electronics IN the chamber. Any sensors are mounted passively, meaning they have a protected wire coming off of them to the control electronics that are at a safe distance.
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