RF feedback for beam loading compensation in the SLC Damping Rings

Author

Krejcik, P. ; Corredoura, P. ; Minty, M. ; Siemann, R. ; Tighe, R. ; Pedersen, F.

Author_Institution

Linear Accel. Center, Stanford Univ., CA, USA

fYear

1993

fDate

17-20 May 1993

Firstpage

2370

Abstract

An RF feedback around the cavities and klystron has been added to the SLC Damping Rings to provide stability under changing beam loading conditions. The beam loading changes in the cavity as a result of programming the RF voltage during the beam store time. The RF voltage is lowered to control the onset of bunch length instabilities, but without RF feedback the beam becomes unstable in the Robinson zero frequency mode. The steady state analysis of the beam loading with and without feedback is presented together with a description of the hardware implementation. Operational experience with the system during SLC running is described

Keywords

cavity resonators; electron accelerators; klystrons; linear accelerators; particle beam diagnostics; RF feedback; RF voltage programming; Robinson zero frequency mode; SLC Damping Rings; beam loading compensation; beam loading conditions; beam store time; bunch length instabilities; cavities; klystron; steady state analysis; Damping; Hardware; Klystrons; Linear accelerators; Particle beams; Radio frequency; Stability criteria; State feedback; Steady-state; Voltage control;

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.1993.309325

Filename

309325