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U.S. Department of Energy
Office of Scientific and Technical Information

High voltage RF feedthrough bushing

Patent ·
OSTI ID:5755325

Described is a multi-element, high voltage radio frequency bushing for transmitting RF energy to an antenna located in a vacuum container. The bushing includes a center conductor of complex geometrical shape, an outer coaxial shield conductor, and a thin-walled hollow truncated cone insulator disposed between central and outer conductors. The shape of the center conductor, which includes a reverse curvature portion formed of a radially inwardly directed shoulder and a convex portion, controls the uniformity of the axial surface gradient on the insulator cone. The outer shield has a first substantially cylindrical portion and a second radially inwardly extending truncated cone portion.

Assignee:
Dept. of Energy
Patent Number(s):
US 4484019
OSTI ID:
5755325
Country of Publication:
United States
Language:
English