Beam position monitor system for PEP-II

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

DOI:https://doi.org/10.1063/1.52291· OSTI ID:526813

Aiello, G R; Johnson, R G ^[1]; Martin, D J ^[2]; Mills, M R ^[3]; Olsen, J J; Smith, S R ^[1]

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1. SLAC, P.O. Box 4349, Stanford, California 94309-4349 (United States)
2. Texas Instruments, Dallas, Texas (United States)
3. 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: Stanford Linear Accelerator Center
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 526813
• Report Number(s): CONF-9605173--
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 390; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
AMP BEAM CURRENTS
BEAM BUNCHING
BEAM MONITORING
BEAM POSITION
CALIBRATION
PEP STORAGE RINGS
SIGNAL CONDITIONING
SPATIAL RESOLUTION