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Method for producing smooth inner surfaces

United States Patent

9,343,649
May 17, 2016
View the Complete Patent at the US Patent & Trademark Office
U.S. Department of Energy - Visit the Office of the Assistant General Counsel for Technology Transfer & Intellectual Property Website
The invention provides a method for preparing superconducting cavities, the method comprising causing polishing media to tumble by centrifugal barrel polishing within the cavities for a time sufficient to attain a surface smoothness of less than 15 nm root mean square roughness over approximately a 1 mm.sup.2 scan area. The method also provides for a method for preparing superconducting cavities, the method comprising causing polishing media bound to a carrier to tumble within the cavities. The method also provides for a method for preparing superconducting cavities, the method comprising causing polishing media in a slurry to tumble within the cavities.
Cooper; Charles A. (Warrenville, IL)
U.S. Department of Energy (Washington, DC)
14/ 678,139
April 3, 2015
GOVERNMENT INTERESTS The United States Government has rights in this invention pursuant to Contract No. DE-AC02-07CH11359 between the U.S. Department of Energy and the Fermi Research Alliance representing Fermi National Accelerator Laboratory, Batavia, Ill.