US 10,485,090 B2
High performance SRF accelerator structure and method
Ganapati Rao Myneni, Yorktown, VA (US)
Assigned to JEFFERSON SCIENCE ASSOCIATES, LLC, Newport News, VA (US)
Filed by JEFFERSON SCIENCE ASSOCIATES, LLC, Newport News, VA (US)
Filed on Jan. 21, 2017, as Appl. No. 15/411,986.
Claims priority of provisional application 62/281,846, filed on Jan. 22, 2016.
Prior Publication US 2017/0215268 A1, Jul. 27, 2017
Int. Cl. H05H 7/20 (2006.01)
CPC H05H 7/20 (2013.01) 7 Claims
OG exemplary drawing
 
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.