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Method for determining hydrogen mobility as a function of temperature in superconducting niobium cavities

United States Patent

March 11, 2008
View the Complete Patent at the US Patent & Trademark Office
Thomas Jefferson National Accelerator Facility - Visit the Technology Review Committee Website
A method for determining the mobility of hydrogen as a function of temperature in superconducting niobium cavities comprising: 1) heating a cavity under test to remove free hydrogen; 2) introducing hydrogen-3 gas into the cavity; 3) cooling the cavity to allow absorption of hydrogen-3; and 4) measuring the amount of hydrogen-3 by: a) cooling the cavity to about K while flowing a known and regulated amount of inert carrier gas such as argon or helium into the cavity; b) allowing the cavity to warm at a stable rate from K to room temperature as it leaves the chamber; and c) directing the exit gas to an ion chamber radiation detector.
May; Robert (Virginia Beach, VA)
Jefferson Science Associates LLC (Newport News, VA)
11/ 270,714
November 9, 2005
The United States of America may have certain rights to this invention under Management and Operating contract No. DE-AC05-84ER 40150 from the Department of Energy.