Precision analog signal processor for beam position measurements in electron storage rings

Conference · Mon May 01 04:00:00 EDT 1995

OSTI ID:102524

Hinkson, J A ^[1]; Unser, K B ^[2]

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1. Lawrence Berkeley Lab., CA (US)
2. Consultant, Genis-Pouilly (France)

Beam position monitors (BPM) in electron and positron storage rings have evolved from simple systems composed of beam pickups, coaxial cables, multiplexing relays, and a single receiver (usually a analyzer) into very complex and costly systems of multiple receivers and processors. The older may have taken minutes to measure the circulating beam closed orbit. Today instrumentation designers are required to provide high-speed measurements of the beam orbit, often at the ring revolution frequency. In addition the instruments must have very high accuracy and resolution. A BPM has been developed for the Advanced Light Source (ALS) in Berkeley which features high resolution and relatively low cost. The instrument has a single purpose; to measure position of a stable stored beam. Because the pickup signals are multiplexed into a single receiver, and due to its narrow bandwidth, the receiver is not intended for single-turn studies. The receiver delivers normalized measurements of X and Y posit ion entirely by analog means at nominally 1 V/mm. No computers are involved. No software is required. Bergoz, a French company specializing in precision beam instrumentation, integrated the ALS design m their new BPM analog signal processor module. Performance comparisons were made on the ALS. In this paper we report on the architecture and performance of the ALS prototype BPM.

• Research Organization: Lawrence Berkeley Lab., Advanced Light Source, CA (US)
• Sponsoring Organization: USDOE, Washington, DC (US)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 102524
• Report Number(s): LBL--37005; CONF-9505168--1; LBNL/ALS--315; ON: DE95016431
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
ACCURACY
ADVANCED LIGHT SOURCE
ADVANCED LIGHT SOURCE ALS
BEAM POSITION
COAXIAL CABLES
COMPUTERS
ELECTRONS
MONITORS
POSITRONS
RESOLUTION
STORAGE RINGS