Impedance of a perforated liner and its impact on the SSC Collider

Author

Chou, W. ; Barts, T.

Author_Institution

Superconducting Super Collider Lab., Dallas, TX, USA

fYear

1993

fDate

17-20 May 1993

Firstpage

3444

Abstract

Various approaches (analytical, numerical, and experimental) have been tried to investigate the impedance and wakefields of a liner. At low frequencies, the results obtained from different approaches are in agreement. At high frequencies, the simulations show that the resonance peaks and the associated long term wakes are related to the periodicity of the hole distribution. The dependence of the impedance on the size, shape and pattern of the holes and slots has been studied. The rounded short slots of random distribution is recommended for minimizing the impedance. The RF coupling between the area inside the liner and the annulus is negligibly small in the frequency range of interest. The impact of the liner on the safety margin and resistive wall instability has been studied

Keywords

electric impedance; particle beam diagnostics; proton accelerators; storage rings; synchrotrons; RF coupling; SSC Collider; hole distribution; impedance; long term wakes; perforated liner; periodicity; resistive wall instability; resonance peaks; safety margin; slots; wakefields; Analytical models; Frequency; Impedance measurement; Inductance; Laboratories; Radiation safety; Resonance; Shape; Surface impedance; Synchrotron radiation;

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.1993.309678

Filename

309678