Transverse impedance of an iris in a beam pipe

Author

Jiang, S. ; Okamoto, H. ; Gluckstern, R.L.

Author_Institution

Maryland Univ., College Park, MD, USA

fYear

1993

fDate

17-20 May 1993

Firstpage

3390

Abstract

In an earlier paper the longitudinal impedance of an iris was obtained in the form of an integral equation by matching the fields in the planes perpendicular to the axis at the ends of the iris. This equation was solved by expanding the field components into a complete set of azimuthally symmetric TM modes in the iris region and numerical results were obtained, particularly for large beam pipe radii. The same method is now applied to the calculation of the transverse impedance, where both asymmetric TM and TE modes are needed in the expansions. Once again the results are obtained for large beam pipe radius and a wide range of values of the relative values of the iris radius, the iris thickness, and the wavelength

Keywords

beam handling equipment; electric impedance; numerical analysis; particle accelerators; asymmetric TE mode; asymmetric TM mode; azimuthally symmetric TM modes; beam pipe; field components; integral equation; iris radius; iris thickness; large beam pipe radii; longitudinal impedance; numerical results; transverse impedance; Boundary conditions; Chemicals; Educational institutions; Frequency; Impedance; Integral equations; Iris; Optical coupling; Tellurium;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1993., Proceedings of the 1993

Conference_Location

Washington, DC

Print_ISBN

0-7803-1203-1

Type

conf

DOI

10.1109/PAC.1993.309660

Filename

309660