Another Method to Measure the Low-Frequency Machine Impedance

The spectrum of long bunches samples the low-frequency part of the machine impedance which is mostly reactive. The voltage induced by the bunch produces the well known "potential well distortion" when RF is on, but also affects the debunching when RF is off. In this paper we present a meth...

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Detalles Bibliográficos
Autores principales: Linnecar, Trevor Paul R, Shaposhnikova, Elena
Lenguaje:eng
Publicado: 1996
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/307377
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author Linnecar, Trevor Paul R
Shaposhnikova, Elena
author_facet Linnecar, Trevor Paul R
Shaposhnikova, Elena
author_sort Linnecar, Trevor Paul R
collection CERN
description The spectrum of long bunches samples the low-frequency part of the machine impedance which is mostly reactive. The voltage induced by the bunch produces the well known "potential well distortion" when RF is on, but also affects the debunching when RF is off. In this paper we present a method of estimating the reactive impedance by measuring the evolution of bunch parameters, such as the peak line density, during debunching. This method was used to find the inductive impedance of the CERN SPS with a single proton bunch injected above transition at 26GeV.
id cern-307377
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1996
record_format invenio
spelling cern-3073772023-05-05T12:57:25Zhttp://cds.cern.ch/record/307377engLinnecar, Trevor Paul RShaposhnikova, ElenaAnother Method to Measure the Low-Frequency Machine ImpedanceAccelerators and Storage RingsThe spectrum of long bunches samples the low-frequency part of the machine impedance which is mostly reactive. The voltage induced by the bunch produces the well known "potential well distortion" when RF is on, but also affects the debunching when RF is off. In this paper we present a method of estimating the reactive impedance by measuring the evolution of bunch parameters, such as the peak line density, during debunching. This method was used to find the inductive impedance of the CERN SPS with a single proton bunch injected above transition at 26GeV.CERN-SL-96-045-RFoai:cds.cern.ch:3073771996-07-22
spellingShingle Accelerators and Storage Rings
Linnecar, Trevor Paul R
Shaposhnikova, Elena
Another Method to Measure the Low-Frequency Machine Impedance
title Another Method to Measure the Low-Frequency Machine Impedance
title_full Another Method to Measure the Low-Frequency Machine Impedance
title_fullStr Another Method to Measure the Low-Frequency Machine Impedance
title_full_unstemmed Another Method to Measure the Low-Frequency Machine Impedance
title_short Another Method to Measure the Low-Frequency Machine Impedance
title_sort another method to measure the low-frequency machine impedance
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/307377
work_keys_str_mv AT linnecartrevorpaulr anothermethodtomeasurethelowfrequencymachineimpedance
AT shaposhnikovaelena anothermethodtomeasurethelowfrequencymachineimpedance

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