A particle accelerator and containment vessel for anti-matter, specifically anti-iron.
The shape of the accelerator is that of a trefoil. An even distribution of particles along the containment path must be maintained. The total mass of the stream and its speed of traverse determine the strength and scope of the anti-Higgs field. Volume remains constant but mass is attenuated. As the field encompasses the trefoil, the trefoil becomes weightless.
The trefoil is necessary because the anti-matter must move through space equally in all three dimensions. A trefoil is the simplest structure that fulfills this requirement.
Placed aboard a spacecraft, with the anti-Higgs field expanded to encompass the craft itself, greater than light speed is possible. See attached file.