Title :
Construction of a superconducting RFQ structure
Author :
Shepard, K.W. ; Kennedy, W.L. ; Crandall, K.R.
Author_Institution :
Argonne Nat. Lab., IL, USA
Abstract :
This paper reports the design and construction status of a niobium superconducting RFQ operating at 194 MHz. The structure is of the rod and post type, novel in that each of four rods is supported by two posts oriented radially with respect to the beam axis. Although the geometry has four-fold rotation symmetry, the dipole-quadrupole mode splitting is large, giving good mechanical tolerances. The simplicity of the geometry enables designing for good mechanical stability while minimizing tooling costs for fabrication with niobium. Design details of a prototype niobium resonator, results of measurements on room temperature models, and construction status are discussed
Keywords :
beam handling equipment; cavity resonators; mechanical stability; 194 MHz; Nb; Nb superconducting RFQ; dipole-quadrupole mode splitting; four-fold rotation symmetry; geometry; mechanical tolerances; post structure; prototype Nb resonator; radially oriented posts; rod structure; room temperature models; superconducting RFQ structure; tooling costs; Blades; Costs; Frequency; Geometry; Niobium; Optical modulation; Particle beams; Structural beams; Temperature measurement; Testing;
Conference_Titel :
Particle Accelerator Conference, 1993., Proceedings of the 1993
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-1203-1
DOI :
10.1109/PAC.1993.308690