Superconducting radiofrequency window assembly

Wave transmission lines and networks – Long line elements and components – Waveguide elements and components

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333 99S, 505866, H01P 108

Patent

active

056105673

ABSTRACT:
The present invention is a superconducting radiofrequency window assembly for use in an electron beam accelerator. The srf window assembly (20) has a superconducting metal-ceramic design. The srf window assembly (20) comprises a superconducting frame (30), a ceramic plate (40) having a superconducting metallized area, and a superconducting eyelet (50) for sealing plate (40) into frame (30). The plate (40) is brazed to eyelet (50) which is then electron beam welded to frame (30). A method for providing a ceramic object mounted in a metal member to withstand cryogenic temperatures is also provided. The method involves a new metallization process for coating a selected area of a ceramic object with a thin film of a superconducting material. Finally, a method for assembling an electron beam accelerator cavity utilizing the srf window assembly is provided. The procedure is carried out within an ultra clean room to minimize exposure to particulates which adversely affect the performance of the cavity within the electron beam accelerator.

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Heinrichs, H. et al, "AnRF Contact for Superconducting Cavities"; Nuclear Instruments and Methods; vol. 171, No. 1; 1 Apr. 1980; pp. 185-188.

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