Components of the d-c system for producing the cesium plasma column are described, particularly the electrodes and the cesium source. Measurement of the magnetic fieid with a Hall effect probes is explained as in the calibration of the plate temperature. Preliminary measurements of plasma density with a Langmuir probe yielded values of about 10/sup 11/ cm/sup -3/. The single turn field coil, the capacitor bank, and the switches of the a-c system to be used in applying the reverse field are described. (D.C.W.)