DEVELOPMENT OF ION SOURCES FOR FUSION-RESEARCH AT SWIP

To meet the requirement of fusion research for neutral beam injection, Southwestem Institute of Physics began the development of high current ion sources in the late seventies. A 7 cm duoPIGatron ion source, a 7 X 35 cm multifilament field free ion source, and an 8.5 cm multicusp ion source have successively been designed, built, and tested. The 7 cm duoPIGatron ion source was developed to study physical and technological aspects relevant to the high current ion source. The 8.5 cm multicusp ion source was developed to provide neutral beam injection for a mirror device MM-2U. It produces a 9 A, 25 keV, 50 ms hydrogen ion beam. In addition, a lithium ion source for plasma diagnostics has been developed.