Beam position monitor system for PEP-II
- SLAC, P.O. Box 4349, Stanford, California 94309-4349 (United States)
- Texas Instruments, Dallas, Texas (United States)
- Unisite, Richardson, Texas (United States)
The beam position monitor (BPM) system for PEP-II, the B-Factory under construction at SLAC, is described in this paper. The system must measure closed orbit for a 3-A multibunch beam and turn-by-turn position for a low-current single bunch injected in a 200-ns gap in the multibunch beam. A system that combines broadband and narrowband capabilities and provides data at high bandwidth was designed. It includes a filter-isolator box (FIB) that selects a harmonic of the bunch spacing (952 MHz) and absorbs the other frequency components; a CAMAC-based wideband I&Q demodulator, ADC, and signal processor that provides beam position information to the control system; and a calibrator that must work even in presence of beam, correcting for electronic measurement errors. This paper describes the system requirements, the electronics design, and the laboratory tests. {copyright} {ital 1997 American Institute of Physics.}
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 526813
- Report Number(s):
- CONF-9605173-; ISSN 0094-243X; TRN: 97:016893
- 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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Beam Position Monitor System for PEP II