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Equalizer design techniques for dispersive cables with application to the SPS wideband kicker
A wide-band vertical instability feedback control system in development at CERN requires 1–1.5 GHz of bandwidth for the entire processing chain, from the beam pickups through the feedback signal digital processing to the back-end power amplifiers and kicker structures. Dispersive effects in cables,...
Autores principales: | , , , |
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Lenguaje: | eng |
Publicado: |
2017
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1016/j.nima.2017.06.029 http://cds.cern.ch/record/2280544 |
_version_ | 1780955599338471424 |
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author | Platt, Jason Hofle, Wolfgang Pollock, Kristin Fox, John |
author_facet | Platt, Jason Hofle, Wolfgang Pollock, Kristin Fox, John |
author_sort | Platt, Jason |
collection | CERN |
description | A wide-band vertical instability feedback control system in development at CERN requires 1–1.5 GHz of bandwidth for the entire processing chain, from the beam pickups through the feedback signal digital processing to the back-end power amplifiers and kicker structures. Dispersive effects in cables, amplifiers, pickup and kicker elements can result in distortions in the time domain signal as it proceeds through the processing system, and deviations from linear phase response reduce the allowable bandwidth for the closed-loop feedback system. We have developed an equalizer analog circuit that compensates for these dispersive effects. Here we present a design technique for the construction of an analog equalizer that incorporates the effect of parasitic circuit elements in the equalizer to increase the fidelity of the implemented equalizer. Finally, we show results from the measurement of an assembled backend equalizer that corrects for dispersive elements in the cables over a bandwidth of 10–1000 MHz. |
id | oai-inspirehep.net-1614570 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2017 |
record_format | invenio |
spelling | oai-inspirehep.net-16145702019-09-30T06:29:59Zdoi:10.1016/j.nima.2017.06.029http://cds.cern.ch/record/2280544engPlatt, JasonHofle, WolfgangPollock, KristinFox, JohnEqualizer design techniques for dispersive cables with application to the SPS wideband kickerAccelerators and Storage RingsA wide-band vertical instability feedback control system in development at CERN requires 1–1.5 GHz of bandwidth for the entire processing chain, from the beam pickups through the feedback signal digital processing to the back-end power amplifiers and kicker structures. Dispersive effects in cables, amplifiers, pickup and kicker elements can result in distortions in the time domain signal as it proceeds through the processing system, and deviations from linear phase response reduce the allowable bandwidth for the closed-loop feedback system. We have developed an equalizer analog circuit that compensates for these dispersive effects. Here we present a design technique for the construction of an analog equalizer that incorporates the effect of parasitic circuit elements in the equalizer to increase the fidelity of the implemented equalizer. Finally, we show results from the measurement of an assembled backend equalizer that corrects for dispersive elements in the cables over a bandwidth of 10–1000 MHz.oai:inspirehep.net:16145702017 |
spellingShingle | Accelerators and Storage Rings Platt, Jason Hofle, Wolfgang Pollock, Kristin Fox, John Equalizer design techniques for dispersive cables with application to the SPS wideband kicker |
title | Equalizer design techniques for dispersive cables with application to the SPS wideband kicker |
title_full | Equalizer design techniques for dispersive cables with application to the SPS wideband kicker |
title_fullStr | Equalizer design techniques for dispersive cables with application to the SPS wideband kicker |
title_full_unstemmed | Equalizer design techniques for dispersive cables with application to the SPS wideband kicker |
title_short | Equalizer design techniques for dispersive cables with application to the SPS wideband kicker |
title_sort | equalizer design techniques for dispersive cables with application to the sps wideband kicker |
topic | Accelerators and Storage Rings |
url | https://dx.doi.org/10.1016/j.nima.2017.06.029 http://cds.cern.ch/record/2280544 |
work_keys_str_mv | AT plattjason equalizerdesigntechniquesfordispersivecableswithapplicationtothespswidebandkicker AT hoflewolfgang equalizerdesigntechniquesfordispersivecableswithapplicationtothespswidebandkicker AT pollockkristin equalizerdesigntechniquesfordispersivecableswithapplicationtothespswidebandkicker AT foxjohn equalizerdesigntechniquesfordispersivecableswithapplicationtothespswidebandkicker |