PROCESSING 15L ELECTRODES (WITH TORR FILL GAUGE)

A.)Open main valve and evacuate units to less than 4mm (torr). Close valve.

B.)Switch on bombarder and increase to 360mA. Hold at this setting while maintaining pressure between 1 and 2 mm (torr) with main valve.

C.)When the units are at 300F/150C, increase current to 650mA.

D.)Maintain pressure between 2 and 3mm (torr) with main valve.

E.)When the electrodes are completely red and the glass has reached 450F/230C, open the main valve for a few seconds and then switch off the bombarder.

F.)With the main valve open, allow the tube to cool to around 100F/40C to 125F/50C with a vacuum gauge reading less than 5 microns.

G.)Fill the units with gas.