Suppression of longitudinal coupled-bunch instabilities by a passive higher harmonic cavity

Author

Bosch, R.A. ; Hsue, C.S.

Author_Institution

Synchrotron Radiat. Res. Center, Hsinchu, Taiwan

fYear

1993

fDate

17-20 May 1993

Firstpage

3369

Abstract

A double RF-cavity system with a passive higher-harmonic cavity is considered for the purpose of preventing coupled-bunch instabilities and/or increasing the bunch lifetime. Expressions are presented for the onset of the equilibrium phase instability, the frequency and damping rate of the Robinson instability, the synchrotron frequency, synchrotron frequency spread, and bunch length. An algorithm is presented for evaluating the performance of a passive higher-harmonic cavity, and applied to the SRRC electron storage ring, which is being installed

Keywords

beam handling equipment; beam handling techniques; cavity resonators; electron accelerators; particle beam diagnostics; storage rings; tuning; Robinson instability; SRRC electron storage ring; bunch lifetime; damping rate; double RF-cavity system; equilibrium phase instability; longitudinal coupled-bunch instability suppression; passive higher harmonic cavity; synchrotron frequency; synchrotron frequency spread; Damping; Impedance; Q factor; Radio frequency; Resonance; Resonant frequency; Storage rings; Synchrotron radiation; Tuning; Voltage;

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.1993.309653

Filename

309653