[oseityphelysiol]

Question from a layman: how will the energy from a fusion reactor be extracted and converted into electrical energy? As far as I understand, the plasma inside a tokamak is isolated from the surroundings by the use of very powerful magnets. I assume in a reactor that is supposed to generate electricity there would be some interface between the plasma and some kind of heat exchanger that would generate steam and turn gas turbines?

[jokteur]

Neutrons that escape the tokamak arrive in a lithium mantle around the reactor, which produces helium and some heat. The heat is extracted from the lithium mantle, and then you have a conventional gas turbine.

This is what I remember from memory, I would need to fact check that.

[tsimionescu]

Yup, plain old heating water to make steam to turn a turbine.