Noun
English Wikipedia has an article on:spheromakWikipedia
spheromak (plural spheromaks)
(physics) A particular form of stabilized magnetic field in which a plasma may be confined for use in nuclear fusion.
Opportunities to test these predictions are provided by configurations such as the ST, spheromak, and FRC, which have a large natural diamagnetic rotation, as well as tokamaks with rotation driven by neutral beam injection. Source: Internet
The spheromak requires wall stabilization to avoid the low-m,n tilt and shift modes, and possibly bending modes. Source: Internet