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Superconductive radiofrequency window assembly

United States Patent

5,752,645
May 19, 1998
View the Complete Patent at the US Patent & Trademark Office
Thomas Jefferson National Accelerator Facility - Visit the Technology Review Committee Website
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.
Phillips; Harry Lawrence (Seaford, VA), Elliott; Thomas S. (Yorktown, VA)
Southeastern Universities Research Ass., Inc. (Washington, DC)
08/ 608,682
February 29, 1996
The United States may have certain rights to this invention, under Management and Operating Contract DE-AC05-84ER40150 from the United States Department of Energy.