Development of a high-speed digital signal process system for bunch-by-bunch feedback systems

High-speed digital filter systems for bunch-by-bunch feedback systems have been developed at KEK. A two-tap finite impulse response filter with simple hardware realizes the functions of a 90° phase shift, suppression of the static component and digital delay of up to a few hundred turns for the KEKB...

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Main Authors: Makoto Tobiyama, Eiji Kikutani
Format: Article
Language:English
Published: American Physical Society 2000-01-01
Series:Physical Review Special Topics. Accelerators and Beams
Online Access:http://doi.org/10.1103/PhysRevSTAB.3.012801
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spelling doaj-665a390fe8b14d0398898f092ed427822020-11-24T21:26:06ZengAmerican Physical SocietyPhysical Review Special Topics. Accelerators and Beams1098-44022000-01-013101280110.1103/PhysRevSTAB.3.012801Development of a high-speed digital signal process system for bunch-by-bunch feedback systemsMakoto TobiyamaEiji KikutaniHigh-speed digital filter systems for bunch-by-bunch feedback systems have been developed at KEK. A two-tap finite impulse response filter with simple hardware realizes the functions of a 90° phase shift, suppression of the static component and digital delay of up to a few hundred turns for the KEKB rings. Difficulties in the circuit board, such as the trimming of the timing skews or the problem of long-term reliability, have been solved using custom GaAs large-scale integrated circuits which demultiplex and multiplex fast parallel-digital data coming from the analog-to-digital converter and going to the digital-to-analog converter. Two major applications of the filter board, the bunch current monitor and the bunch oscillation recorder with 20 MB memories for transient-domain analysis of the instabilities, are also described.http://doi.org/10.1103/PhysRevSTAB.3.012801
collection DOAJ
language English
format Article
sources DOAJ
author Makoto Tobiyama
Eiji Kikutani
spellingShingle Makoto Tobiyama
Eiji Kikutani
Development of a high-speed digital signal process system for bunch-by-bunch feedback systems
Physical Review Special Topics. Accelerators and Beams
author_facet Makoto Tobiyama
Eiji Kikutani
author_sort Makoto Tobiyama
title Development of a high-speed digital signal process system for bunch-by-bunch feedback systems
title_short Development of a high-speed digital signal process system for bunch-by-bunch feedback systems
title_full Development of a high-speed digital signal process system for bunch-by-bunch feedback systems
title_fullStr Development of a high-speed digital signal process system for bunch-by-bunch feedback systems
title_full_unstemmed Development of a high-speed digital signal process system for bunch-by-bunch feedback systems
title_sort development of a high-speed digital signal process system for bunch-by-bunch feedback systems
publisher American Physical Society
series Physical Review Special Topics. Accelerators and Beams
issn 1098-4402
publishDate 2000-01-01
description High-speed digital filter systems for bunch-by-bunch feedback systems have been developed at KEK. A two-tap finite impulse response filter with simple hardware realizes the functions of a 90° phase shift, suppression of the static component and digital delay of up to a few hundred turns for the KEKB rings. Difficulties in the circuit board, such as the trimming of the timing skews or the problem of long-term reliability, have been solved using custom GaAs large-scale integrated circuits which demultiplex and multiplex fast parallel-digital data coming from the analog-to-digital converter and going to the digital-to-analog converter. Two major applications of the filter board, the bunch current monitor and the bunch oscillation recorder with 20 MB memories for transient-domain analysis of the instabilities, are also described.
url http://doi.org/10.1103/PhysRevSTAB.3.012801
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