Formation of compact toroidal plasmas by magnetized coaxial plasma gun injection into an oblate flux conserver

Conference · Tue Nov 04 04:00:00 EST 1980

OSTI ID:6876347

Turner, W C; Goldenbaum, G C; Granneman, E H.A.; Hartman, C W; Prono, D S; Taska, J; Smith, Jr, A C

Initial results are reported on the formation of compact toroidal plasmas in an oblate shaped metallic flux conserver. A schematic of the experimental apparatus is shown. The plasma injector is a coaxial plasma gun with solenoid coils wound on the inner and outer electrodes. The electrode length is 100 cm, the diameter of the inner (outer) electrode is 19.3 cm (32.4 cm). Deuterium gas is puffed into the region between electrodes by eight pulsed valves located on the outer electrode 50 cm from the end of the gun. The gun injects into a cylindrically symmetrical copper shell (wall thickness = 1.6 mm) which acts as a flux conserver for the time scale of experiments reported here. The copper shell consists of a transition cylinder 30 cm long, 34 cm in diameter, a cylindrical oblate pill box 40 cm long, 75 cm in diameter and a downstream cylinder 30 cm long, 30 cm in diameter. The gap between the gun and transition cylinder is 6 cm. An axial array of coils outside the vacuum chamber can be used to establish an initial uniform bias field.

• Research Organization: California Univ., Livermore (USA). Lawrence Livermore National Lab.; Pacific Gas and Electric Co., San Francisco, CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6876347
• Report Number(s): UCRL-85122; CONF-801215-5
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700106* -- Fusion Energy-- Plasma Research-- Plasma Production-- (-1987)
ANNULAR SPACE
ASPECT RATIO
BEAM INJECTION
CONFIGURATION
ELECTRIC COILS
ELECTRICAL EQUIPMENT
ELECTRODES
ELECTROMAGNETIC RADIATION
EQUIPMENT
LASER RADIATION
MAGNETIC FLUX
PLASMA BEAM INJECTION
PLASMA DIAGNOSTICS
PLASMA GUNS
PLASMA PRODUCTION
RADIATIONS
SOLENOIDS
SPACE
THERMONUCLEAR DEVICES
TOROIDAL CONFIGURATION