US 10,485,090 B2Granted

High performance SRF accelerator structure and method

AssigneeJefferson Science Associates, LLC

InventorGanapati Rao Myneni

Life of this patent

Estimating the term…

Loading patent…

Abstract

A high performance accelerator structure and method of production. The method includes precision machining the inner surfaces of a pair of half-cells that are maintained in an inert atmosphere and at a temperature of 100 K or less. The method includes removing thin layers of the inner surfaces of the half-cells after which the roughness of the inner surfaces in measured with a profilimeter. Additional thin layers are removed until the inner surfaces of the half-cell measure less than 2 nm root mean square (RMS) roughness over a 1 mm2 area on the profilimeter. The two half-cells are welded together in an inert atmosphere to form an SRF cavity. The resultant SRF cavity includes a high accelerating gradient (Eacc) and a high quality factor (Q0).

Claims7

Dependent claims

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.

4 more elements

Dependencies are inferred from the claim text.