Patent ID: 8324134

Claim:
A method of manufacturing a superconducting radio-frequency acceleration cavity used in a charged particle accelerator, comprising the steps of: (a) obtaining an ingot made from a disk-shaped niobium material; (b) slicing and cutting the niobium ingot into a plurality of niobium plates each with a predetermined thickness, by vibrating multiple wires back and forth while spraying fine floating abrasive grains with the niobium ingot supported, wherein a top portion of the niobium ingot is bonded and supported with a resin when slicing and cutting the niobium ingot, thereby obtaining a plurality of sliced niobium plates, and immersing the plurality of sliced niobium plates in a release material; (c) removing the floating abrasive grains adhered to surfaces of the plurality of sliced niobium plates after immersing the plurality of sliced niobium plates in the release material; (d) performing deep draw forming on each of the plurality of sliced niobium plates and thereby forming a niobium cell of a desired shape and obtaining a cavity; (e) performing hydrogen degassing annealing of the cavity after removing a surface stain layer of the cavity; and (f) baking the cavity which is assembled with the plurality of sliced niobium plates.