Abstract: A liquid cooled collector for an electron beam tube. The collector includes a dielectric body through which is formed a central cavity. Within the central cavity are disposed at least one electrode that dissipates the impinging electron beam. The electrodes are thermally coupled to the dielectric body. As such, when the electrodes absorb the electron beam, the resulting heat is conducted into the dielectric body. A plurality of fluid conduits are disposed around the dielectric body wherein at least one side of each conduit is defined by the dielectric body. Furthermore, an input manifold and an output manifold are also partially defined by the dielectric body and interconnect each of the fluid conduits. Each of the fluid conduits extend separately from a point along the input manifold to a point along the output manifold.

Abstract: The present invention is an anisotropically loaded helix assembly for use in a traveling-wave tube, and the corresponding method for making the same. The present invention includes a helix circuit concentrically supported within a conductive cylindrical housing by a plurality of dielectric support members. The present invention effects an improved efficiency and bandwidth in the performance of TWT by the material used to form the dielectric support members, the shape of the dielectric support members and the manner by which the anisotropic load is affixed to the dielectric support members.

Abstract: The present invention is an anisotropically loaded helix assembly for use in a traveling-wave tube, and the corresponding method for making the same. The present invention includes a helix circuit concentrically supported within a conductive cylindrical housing by a plurality of dielectric support members. The present invention effects an improved efficiency and bandwidth in the performance of TWT by the material used to form the dielectric support members, the shape of the dielectric support members and the manner by which the anisotropic load is affixed to the dielectric support members.

Abstract: The present invention is a periodic permanent magnet (PPM) assembly used to produce a focussing field within an electron tube, and the corresponding method of manufacturing the same. The present invention PPM includes producing two opposing semi-cylindrical stacks by alternately stacking semi-annular shaped magnets and pole pieces. Once the two semi-cylindrical stacks are formed, they are joined around the electron tube, such that the various pole pieces and magnets of the two semi-cylindrical stacks align. As a result of the joining of the two semi-cylindrical stacks, a cylindrical periodic permanent magnet assembly is formed around the electron tube in a cost effective and labor efficient manner.

Abstract: An electron collector apparatus for a traveling-wave tube includes a ceramic housing having a cavity formed therein. The interior surfaces of the cavity are coated with at least one layer of an electrically conductive material that is adapted to be coupled to a bias source. An aperture is formed in the cavity through which an electron beam may enter the cavity. As the electron beam impinges upon the cavity walls, the cavity walls heat and conduct heat into the housing. The housing conducts the heat to its outermost surface where it can be dissipated. The outermost surface of the housing is covered with an electrically conductive material that acts both as a Faraday cage and a base onto which heat exchangers and other cooling devices can be affixed.