Cures for Beam Instabilities in the CERN SPS and their Limitations

The LHC beam in the SPS is unstable with a threshold almost an order of magnitude below the nominal intensity. The cures used to stabilise this beam against coupled bunch instabilities apart from RF feedback, feed-forward and longitudinal damping, include a fourth harmonic RF system and controlled e...

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Autor principal: Shaposhnikova, E
Lenguaje:eng
Publicado: 2006
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/1065440
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author Shaposhnikova, E
author_facet Shaposhnikova, E
author_sort Shaposhnikova, E
collection CERN
description The LHC beam in the SPS is unstable with a threshold almost an order of magnitude below the nominal intensity. The cures used to stabilise this beam against coupled bunch instabilities apart from RF feedback, feed-forward and longitudinal damping, include a fourth harmonic RF system and controlled emittance blow-up. The limitations of the two last methods were studied experimentally and are analysed here from the point of view of beam quality requirements at extraction and future intensity increases up to ultimate value.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2006
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spelling cern-10654402019-09-30T06:29:59Zhttp://cds.cern.ch/record/1065440engShaposhnikova, ECures for Beam Instabilities in the CERN SPS and their LimitationsAccelerators and Storage RingsThe LHC beam in the SPS is unstable with a threshold almost an order of magnitude below the nominal intensity. The cures used to stabilise this beam against coupled bunch instabilities apart from RF feedback, feed-forward and longitudinal damping, include a fourth harmonic RF system and controlled emittance blow-up. The limitations of the two last methods were studied experimentally and are analysed here from the point of view of beam quality requirements at extraction and future intensity increases up to ultimate value.CERN-AB-2007-075oai:cds.cern.ch:10654402006
spellingShingle Accelerators and Storage Rings
Shaposhnikova, E
Cures for Beam Instabilities in the CERN SPS and their Limitations
title Cures for Beam Instabilities in the CERN SPS and their Limitations
title_full Cures for Beam Instabilities in the CERN SPS and their Limitations
title_fullStr Cures for Beam Instabilities in the CERN SPS and their Limitations
title_full_unstemmed Cures for Beam Instabilities in the CERN SPS and their Limitations
title_short Cures for Beam Instabilities in the CERN SPS and their Limitations
title_sort cures for beam instabilities in the cern sps and their limitations
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/1065440
work_keys_str_mv AT shaposhnikovae curesforbeaminstabilitiesinthecernspsandtheirlimitations

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