title: BNC-JJ coaxial floating shield bakable and coolable vacuum feedthrough useful from dc to 4 GHz.
abstract: A floating (10(11) Omega), bakable (300 degrees C), coolable (liquid helium temperature) BNC-JJ-type coaxial vacuum feedthrough is described. It has a VSWR < or =1.22 from dc to 1.3 GHz and < or =1.35 from 2.0 to 4.0 GHz.
authors.affiliation: National Laboratory for High Energy Physics, Oho-machi, Tsukuba-gun, Ibaraki-ken, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Ishimaru
mesh_terms: D003080:Cold Temperature; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008872:Microwaves; D017356:Synchrotrons / Q000295:instrumentation*; D014618:Vacuum