Key points are not available for this paper at this time.
During the last six years, it has become apparent that the tokamak device affords the most straightforward route to providing a significant fusion plasma in the laboratory, with considerable potential for eventual application in fusion power reactors. Consequently, four large tokamak projects are currently being pursued in several countries: (1) The TFTR (Tokamak Fusion Test Reactor) in the USA; (2) the JET (Joint European Torus) in the European Economic Community; (3) the JT-60 (Japanese Tokamak) in Japan; and (4) the T-20 in the USSR.
D.L. Jassby (1977) studied this question.