Levitated dipole

A levitated dipole is a type of nuclear fusion reactor design using a superconducting torus that is magnetically levitated inside the reactor chamber. The name refers to the magnetic dipole that forms within the reaction chamber, similar to Earth's magnetosphere. It is claimed that such an apparatus could contain plasma more efficiently than other fusion reactor designs. The concept of using one as a fusion reactor was introduced by Akira Hasegawa in 1987.