Commissioning results of the fast orbit feedback at the ALS

Author

Steier, C. ; Biocca, A. ; Domning, E. ; Jacobson, S. ; Portmann, G. ; Scarvie, T. ; Williams, E.

Author_Institution

LBNL, Berkeley, CA

Volume

5

fYear

2003

fDate

12-16 May 2003

Firstpage

3374

Lastpage

3376

Abstract

A new fast global orbit feedback system has been designed at the ALS and is in commissioning since last September. The system has two main purposes. The first is to meet the demands of some users for even improved short term orbit stability. The second is to enable the use of more sophisticated insertion device compensation schemes (e.g. tune, beta-beating, coupling) for fast moving insertion devices like elliptically polarizing undulators, without deteriorating the orbit stability. One feature of the fast orbit feedback (with 1 kHz update rate) is the use of standard computer and networking equipment

Keywords

particle beam stability; storage rings; ALS; beta-beating; elliptically polarizing undulators; fast global orbit feedback system; improved short-term orbit stability; insertion device compensation schemes; networking equipment; standard computer; Coils; Feedforward systems; Hysteresis; Magnetic cores; Magnets; Optical distortion; Optical feedback; Radio frequency; Stability; Undulators;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the

Conference_Location

Portland, OR

ISSN

1063-3928

Print_ISBN

0-7803-7738-9

Type

conf

DOI

10.1109/PAC.2003.1289919

Filename

1289919