A cast, multistage, diaphragm-type, hippodrome-shaped, magnetic-flashover-inhibited insulator

We report on the development of a water vacuum interface for the EAGLE facility at Physics International Company. An interesting feature of this insulator is its construction-cast urethane is bonded directly to metal to form a vacuum seal. We report on the mechanical process development, design considerations for EAGLE, and results from experiments on a half-scale prototype.