The core of the device uses cusp confinement, a sort of magnetic trap in which particles that try to escape are pushed back by rounded, pillowlike magnetic fields. (sciencemag.org)
Using a series of magnetic traps, they slowed down antiprotons and antielectrons from thousands of kelvin to about 15 kelvin. (sciencemag.org)
Dispersive light scattering was used to observe the separation between the condensed and normal components of the Bose gas inside a magnetic trap. (science.sciencemag.org)