A stellarator is a device used to confine a hot plasma with magnetic fields in order to sustain a controlled nuclear fusion reaction. It is one of the earliest controlled fusion devices, first invented by Lyman Spitzer in 1950 and built the next year at what later became the Princeton Plasma Physics Laboratory. The name refers to the possibility of harnessing the power source of the sun, a stellar object.

Stellarators were popular in the 1950s and 60s, but the much better results from tokamak designs led to them falling from favor in the 1970s. More recently, in the 1990s, problems with the tokamak concept have led to renewed interest in the stellarator design, and a number of new devices have been built. Some important modern stellarator experiments are Wendelstein 7-X, in Germany, and the Large Helical Device, in Japan. Princeton Plasma Physics Laboratory started building a new stellarator, NCSX, but as of 2008, work was abandoned due to high costs.

Read more about Heliac:  Description, Configurations of Stellarator, Comparison To Tokamaks, Recent Results

Other articles related to "heliac":

Heliac - Recent Results
... University of Wisconsin electrical engineering Professor David Anderson and research assistant John Canik proved in 2007 that the Helically Symmetric eXperiment (HSX) can overcome this major barrier in plasma research ... The HSX is the first stellarator to use a quasi-symmetric magnetic field ...
Configurations of Stellarator
... Heliac (Literally) helical axis stellarator a stellarator in which the magnetic axis (and plasma) follows a helical path to form a toroidal helix rather than a simple ring shape ... The original Heliac consists only of circular coils, and the flexible heliac (H-1NF, TJ-II, TU-Heliac) adds a small helical coil to allow the twist to be varied by a factor of up to 2 ...