Containing the heat from Nuclear Fusion

No. The energy released by fission in nuclear reactors is controlled by limiting the reaction. It doesn't generate any more heat than conventional power sources and it typically used to boil water which then powers turbines to generate electricity.

You changed fusion to fission, Engineer. These are two different problems.

I don't have very much specific knowledge about fusion reactions, but I will take an educated guess.

My understanding is that the magnets are there to contain the reaction. At those temperatures there aren't many options to make sure the reaction doesn't fall to the floor. I think the magnets are there to keep the reaction in the place they want it. This doesn't specifically deal with the heat...

However, if you can ensure the reaction happens in a vacuum for instance... inside of a container that can withstand a high heat with the magnetic field ensuring the hottest parts of the reaction don't contact the wall, then you could have a sustainable, fully contained fusion reaction. In this case the vacuum would provide insulation.

I don't know the details... but I imagine that that is what happens.

All this supposes that controlled and sustainable nuclear fusion is a reality. Maybe I missed something. . . ?

It's been around for a while e.g. at JET at Culham (record is 16 MW so far). The goal is a Q significantly greater than unity; at Cadarache they are planning for a Q of around 10 so I would guess, yes, you may have a bit of catching up to do.

Well, fan me with a blowtorch.

Thanks for the reply, That's the idea I got from the reading I did.