The plasma source of the Large Plasma Device at University of California, Los Angeles.

The Large Plasma Device at the University of California, Los Angeles has recently been upgraded. The plasma is now 18 m long (the device is 22 m long) and is designed to produce a 0.36 T axial magnetic field. Its plasma source has also been upgraded, incorporating a 1 m square heater, a 72 cm diameter cathode and anode, and associated heat shields and reflectors. The barium oxide coated cathode is heated to 750 °C and can produce plasmas of diameters up to 0.9 m diameter (depending on the magnetic field configuration), and densities up to 7×10¹² cm^-3 with a spatial uniformity of ±10%. [ABSTRACT FROM AUTHOR]