Simulation of longitudinal multibunch instabilities in CESR

Author

Fromowitz, D.B.

Author_Institution

Cornell Univ., Ithaca, NY, USA

Volume

3

fYear

1999

fDate

1999

Firstpage

1632

Abstract

A tracking simulation predicts beam current thresholds in CESR (Cornell Electron-positron Storage Ring) based on the longitudinal dynamics of multibunch beams in RF cavities. The simulated thresholds are found to have a very strong dependence on the frequencies of the HOM cavity wakefields and are consistent with CESR measurements. Fourier transforms of simulated data are also consistent with observed spectral lines in CESR. After the phase III upgrade to SRF (Superconducting RF) cavities is completed in 1999, a significant increase in the thresholds is predicted

Keywords

colliding beam accelerators; electron accelerators; particle beam bunching; particle beam stability; storage rings; CESR; Cornell Electron-positron Storage Ring; HOM cavity wakefields; RF cavities; beam current thresholds; longitudinal dynamics; longitudinal multibunch instabilities; multibunch beams; phase III upgrade; superconducting RF cavities; tracking simulation; Chaos; Drives; Fourier transforms; Frequency measurement; Physics; Predictive models; Radio frequency; Storage rings; Synchrotron radiation; Tracking;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1999. Proceedings of the 1999

Conference_Location

New York, NY

Print_ISBN

0-7803-5573-3

Type

conf

DOI

10.1109/PAC.1999.794204

Filename

794204