Patent ID: 9055659
Filing Date: 2015-06-09
Classification: B21D,H05H,Y10T

Abstract:
1. A method for manufacturing an outer conductor of a higher-order-mode coupler for a superconducting acceleration cavity, the outer conductor comprising: a cylindrical main body that is open at a first end surface thereof; a port formed in a side of the main body so as to penetrate therethrough; and a protruding part formed outside a second end surface of the main body, the method comprising: a deep drawing step of deep-drawing a metal plate to form the main body; a port-forming step of flanging the thus-formed main body to form the port; a first machining step of forming a groove in a middle of the protruding part in a height direction of the protruding part by machining the main body to adjust an outer shape thereof; and a step of deforming the second end surface of the main body by pushing the protruding part or by holding and pulling the groove, and adjusting a spacing between an inner conductor disposed in the main body and the second end surface of the main body, wherein, in the first machining step, a thickness of the second end surface of the main body, except for a part where the protruding part is formed, is substantially even and is thinner than a thickness of a cylindrical portion of the main body.