Fast digital orbit feedback systems at NSLS

Author

Podobedov, B. ; Kushner, B. ; Ramamoorthy, Subramanian ; Tang, Y. ; Zitvogel, E.

Author_Institution

Nat. Synchrotron Light Source, Brookhaven Nat. Lab., Upton, NY, USA

Volume

1

fYear

2001

fDate

2001

Firstpage

396

Abstract

We are implementing digital orbit feedback systems to replace the analog ones in both the VUV and the X-ray rings. We developed an original VME-based design which is run by a powerful Motorola 2305 CPU and consists entirely of off-the-shelf VME boards. This makes the system inexpensive and easy to configure, and allows for high digitizing rates. The new 5 kHz digital global feedback system is currently operational in the VUV ring, and the X-ray system is in the commissioning phase. Some of the parameters achieved include vertical correction bandwidth of 200 Hz (at DC gain of 100) and typical orbit drift over a fill of <3% of the rms beam size. In this paper we discuss the system architecture, implementation and. performance

Keywords

accelerator control systems; electron accelerators; feedback; high energy physics instrumentation computing; storage rings; Motorola 2305 CPU; NSLS; VME; digital global feedback system; digital orbit feedback systems; orbit drift; vertical correction bandwidth; Bandwidth; Feedback; Laboratories; Light sources; Low pass filters; Power harmonic filters; Sampling methods; Stability; Synchrotrons; Working environment noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001

Conference_Location

Chicago, IL

Print_ISBN

0-7803-7191-7

Type

conf

DOI

10.1109/PAC.2001.987524

Filename

987524