Experimental study of collective effects in BEP storage ring with high stored current

Author

Danilov, V. ; Koop, I. ; Lysenko, A. ; Militsyn, B. ; Nesterenko, I. ; Perevedentsev, E. ; Pozdeev, E. ; Ptitsin, V. ; Shatunov, Yu ; Vasserman, I.

Author_Institution

Budker Inst. of Nucl. Phys., Acad. of Sci., Novosibirsk, Russia

fYear

1993

fDate

17-20 May 1993

Firstpage

3711

Abstract

The results of extensive investigation of beam dynamics with high current in BEP booster are presented. Strong bunch lengthening due to the potential well distortion by the inductive impedance was observed on the background of the multiple intrabeam scattering and of the ion accumulation (in the e^- beam). The octupole and sextupole corrections enabled control of collective damping of the head-tail modes. Fast damping is also observed at zero chromaticity, this is attributed to the injection kickers acting as transmission lines. The proper tuning of the nonlinearity corrections cures the transverse instabilities and enables capability to store up to 0.8A current in a single bunch

Keywords

beam handling techniques; electron accelerators; particle beam diagnostics; storage rings; tuning; BEP storage ring; beam dynamics; booster; bunch lengthening; collective effects; head-tail modes; octupole corrections; sextupole corrections; transverse instabilities; tuning; Damping; Electrons; Energy measurement; Nonlinear optics; Optical scattering; Particle beam measurements; Positrons; Resonance; Size measurement; Storage rings;

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.1993.309767

Filename

309767