Does anyone know whether nuclear fusion energy gain numbers contain energy requirements for keeping the magnets cooled and the vacuum at high quality?
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yeah, sounds like something physicists would do, exactly what I was worrying about :/
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consider a spherical ball of deuterium in a vacuum and don't worry about how it got that way
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this answer is also on point; they stick a factor of 2 on it to account for a buffer and conversion efficiency. might be more than needed tbh.https://twitter.com/SebTallents/status/1420794843022905351 …
Thanks. Twitter will use this to make your timeline better. UndoUndo
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When I left, there was some debate on desirability of ignition (Q>5 -> inf). Alpha's in the core might drive MHD/kinetic instabilities and disruptions; so accepting first orbit loses of alpha, forgoing ignition and focusing on high but not infinite Q might be more practical.
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in practice you have finite time shots so you’re never really at infinite Q
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