Patent ID: 6380685
Filing Date: 2002-04-30
Classification: H01J

Abstract:
A process for assembling a long life hollow cathode assembly comprising a cathode tube and disc orifice sub-assembly, a swaged heater sub-assembly, a keeper sub-assembly comprising a keeper cap, a keeper tube and a keeper collar, an expellant isolater sub-assembly, a keeper brazing sub-assembly, an anode connector assembly, and an insert cathode sub-assembly, wherein all assembly procedures are conducted in a Class 1000 clean room on a cleaned stainless steel clean room-rated table, comprising the steps of:providing an insert cathode sub-assembly as a completed sub-assembly, wherein the cathode tube of said sub-assembly is welded to a disc orifice and vacuum fired; and, installing the swaged heater onto the cathode tube using a ceramic cement.