Hardware design and implementation of the closed-orbit feedback system at APS
- Advanced Photon Source, Argonne National Laboratory 9700 S. Cass Ave, Argonne, Illinois 60439 (United States)
The Advanced Photon Source (APS) storage ring will utilize a closed-orbit feedback system in order to produce a more stable beam. The specified orbit measurement resolution is 25 microns for global feedback and 1 micron for local feedback. The system will sample at 4 kHz and provide a correction bandwidth of 100 Hz. At this bandwidth, standard rf BPMs will provide a resolution of 0.7 micron, while specialized miniature BPMs positioned on either side of the insertion devices for local feedback will provide a resolution of 0.2 micron (1). The measured BPM noise floor for standard BPMs is 0.06 micron per root hertz mA. Such a system has been designed, simulated, and tested on a small scale (2). This paper covers the actual hardware design and layout of the entire closed-loop system. This includes commercial hardware components, in addition to many components designed and built in-house. The paper will investigate the large-scale workings of all these devices, as well as an overall view of each piece of hardware used. {copyright} {ital 1997 American Institute of Physics.}
- OSTI ID:
- 526816
- Report Number(s):
- CONF-9605173-; ISSN 0094-243X; TRN: 97:016896
- Journal Information:
- AIP Conference Proceedings, Vol. 390, Issue 1; Conference: 7. workshop on beam instrumentation, Argonne, IL (United States), 6-9 May 1996; Other Information: PBD: Jan 1997
- Country of Publication:
- United States
- Language:
- English
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