The 8008 1758

Neutrons don't respond to magnetic fields because they aren't electromagnetically charged.

The former Soviet Union built a series of experimental magnetically confined fusion reactors called "Tokamaks" one of which actually generated significantly more power than it consumed.

They ran into significant problems, however, with the aforementioned problems. In addition, it's hard to keep a continuous fusion reaction magnetically confined because there are significant instabilities in magnetic compression which tend to cause the plasma to squirt out from instabilities in the field.

Modern fusion reactors rely on laser induced implosion of a heavy metal capsule or "pellet" containing the thermonuclear fuel in exactly the same way a hydrogen plant works, only on a very tiny scale. The laser superheats the surface of the capsule and the ablation of material drives the remaining material inward in the same way that expulsion of combustion products from the exhaust nozzle drive a rocket forward.

This process would be repeated on a rapid basis in a power producing system. Unfortunately, this does nothing to address the neutron issues.

Now, if we could figure out some way to create a gravitational confinement field instead of a magnetic one, that might permit keeping the neutrons temporarily at bay, but you still end up with the problem of what to do with them at some point.

TANSTAAFL, you know...