Study of coupled-bunch collective effects in the ALS

Author

Byrd, J.M. ; Corlett, J.N.

Author_Institution

Lawrence Berkeley Lab., CA, USA

fYear

1993

fDate

17-20 May 1993

Firstpage

3318

Abstract

We present an overview of the calculated longitudinal and transverse coupled-bunch (CB) growth rates using the measured RF cavity higher order mode (HOM) impedance for the Advanced Light Source (ALS), a 1.5 GeV electron storage ring for producing synchrotron radiation. We also describe a visual method of representing the effective beam impedance and corresponding growth rates which is especially useful for understanding the dependence of growth rate on HOM frequency and Q, for determining the requirements of the CB feedback system, and for interpreting measured beam spectra

Keywords

beam handling techniques; particle beam diagnostics; storage rings; 1.5 GeV; ALS; Advanced Light Source; HOM frequency; Q value; RF cavity; coupled bunch feedback system; coupled-bunch collective effects; effective beam impedance; electron storage ring; higher order mode impedance; longitudinal coupled-bunch growth rates; transverse coupled-bunch growth rates; Electrons; Feedback; Frequency measurement; Impedance measurement; Light sources; Optical coupling; Q measurement; Radio frequency; Storage rings; 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.1993.309638

Filename

309638