US Patent No. 10,485,090

HIGH PERFORMANCE SRF ACCELERATOR STRUCTURE AND METHOD


Patent No. 10,485,090
Issue Date November 19, 2019
Title High Performance Srf Accelerator Structure And Method
Inventorship Ganapati Rao Myneni, Yorktown, VA (US)
Assignee JEFFERSON SCIENCE ASSOCIATES, LLC, Newport News, VA (US)

Claim of US Patent No. 10,485,090

1. A chemical rinse-free method of forming a superconducting radio frequency (SRF) accelerator cavity, comprising:(a) providing a first and second half-cell of an accelerator cavity having an inner surface and an equator;
(b) adjusting the temperature of the first and second half-cell to 100 K or less;
(c) removing a thin layer of the inner surface of the first and second half-cell while holding the temperature of the first and second half-cell to 100K or less and maintaining the first and second half-cell in a first inert atmosphere;
(d) measuring the roughness of the inner surface of the first and second half-cell with a surface profilimeter;
(e) repeating steps (c) through (d) until the inner surface of the first and second half-cell is less than 2 nm root mean square (RMS) roughness over a 1 mm2 area; and
(f) welding the two half-cells together in a second inert atmosphere to form a superconducting radio frequency accelerator cavity.