Design Study of a Superconducting Radiofrequency Beam Separator

Author

Hahn, H. ; Halama, H.J.

Author_Institution

Brookhaven National Laboratory Upton, New York

Volume

14

Issue

3

fYear

1967

fDate

6/1/1967 12:00:00 AM

Firstpage

356

Lastpage

360

Abstract

A design study of a superconducting RF beam separator suitable for counter beams is presented. A simple two-deflector separation scheme permits one-contaminant rejection in momentum ranges from 8.5 to 19 GeV/c for P and Â¿ beams and from 4.5 to 10 GeV/c for K beams. The operating wavelength Â¿ = 24 cm was obtained by optimizing the transmission of wanted particles. An interdeflector spacing of L = 33 m follows. The geometrical configuration of the lead-coated iris-loaded structure is selected for highest bandwidth which is obtained when the ratio of aperture radius and wavelength is close to 0.2. The maximum deflecting field in the 3 m long resonant ring deflector is limited to about 7 MV/m. The superconducting structure is expected to have a shunt impedance of R Â¿ 1012 Â¿/m and an unloaded quality factor of Qo Â¿ 1.5 Ã— 109. The ensuing RF power requirements are discussed.

Keywords

Counting circuits; Laboratories; Mesons; Optical beams; Particle beams; Particle separators; Protons; Pulse amplifiers; Radio frequency; Superconducting microwave devices;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.1967.4324581

Filename

4324581