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I think a bigger issue that is not discussed much is synchrotron radiation. If you try to control a charged particle's trajectory with a magnet, it releases ra
by snarfy 2y ago
I think a bigger issue that is not discussed much is synchrotron radiation. If you try to control a charged particle's trajectory with a magnet, it releases radiation. The more you try to heat a plasma up and control with magnets, the more it releases light and cools down. A tokamak design needs to be large to limit this effect, and is why if we ever have a Mr Fusion it won't be a tokamak design.
- pfdietz 2y agoI think the common idea is that the inner surface of the reactor's first wall will be conductive, reflecting the synchrotron radiation back into the plasma, where it will be reabsorbed. Bremsstrahlung, on the other hand, can't be handled this way. Keeping electrons cold helps limit both effects, which is one reason why Helion's approach is interesting: the ions there are much hotter than the electrons.