3 ms·

Er, they've solved the instability problem of tokamaks. They've already run it for 8 minutes, target is 30 and there don't seem to be any fundamental hurdles,

• sigmoid10 3y ago
  No they haven't. The thing is you need to keep it hot enough and confine it long enough to produce a Q factor large enough for an economically practicable application. We are like one or two orders of magnitude away from that. No magnetic confinement scheme has even reached Q>1 so far, so we're a long way from any useful power plant design.