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Title: Superconducting radiofrequency window assembly

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.
Inventors:
 [1];  [2]
  1. (Seaford, VA)
  2. (Yorktown, VA)
Issue Date:
OSTI Identifier:
870862
Assignee:
Southeastern Universities Research Assn., Inc. (Newport News, VA) TJNAF
Patent Number(s):
US 5610567
Contract Number:
AC05-84ER40150
Research Org:
SOUTHEASTERN UNIV RESCH ASSN
Country of Publication:
United States
Language:
English
Subject:
superconducting; radiofrequency; window; assembly; electron; beam; accelerator; srf; 20; metal-ceramic; design; comprises; frame; 30; ceramic; plate; 40; metallized; eyelet; 50; sealing; brazed; welded; method; providing; mounted; metal; withstand; cryogenic; temperatures; provided; involves; metallization; process; coating; selected; film; material; finally; assembling; cavity; utilizing; procedure; carried; ultra; clean; minimize; exposure; particulates; adversely; affect; performance; srf window; cryogenic temperature; cryogenic temperatures; beam accelerator; conducting material; method involves; electron beam; superconducting material; window assembly; adversely affect; minimize exposure; superconducting radiofrequency; beam welded; ceramic plate; cavity utilizing; radiofrequency window; accelerator cavity; metal-ceramic design; method involve; superconducting metal; superconducting metal-ceramic; superconducting radio; conducting metal; /333/505/