Hardware design and implementation of the closed-orbit feedback system at APS

Journal Article · Wed Jan 01 04:00:00 EST 1997 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.52293· OSTI ID:526816

Barr, D ^[1]; Chung, Y ^[1]

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1. 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--
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 390; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
ADVANCED PHOTON SOURCE
BEAM MONITORING
BEAM POSITION
FEEDBACK
POSITRON BEAMS
RF SYSTEMS
SIGNAL CONDITIONING
STABILITY