MD1831: Single Bunch Instabilities with Q" and Non-Linear Corrections

During MD1751, it was observed that both a full single beam and 964 non-colliding bunches in Beam 1 (B1) and Beam 2 (B2) were both stable at the End of Squeeze (EOS) for 0A in the Landau Octupoles. At ß* = 40cm there is also a significant Q" arising from the lattice, as well as uncorrected non-...

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Autores principales: Carver, Lee Robert, Schenk, Michael, De Maria, Riccardo, Li, Kevin Shing Bruce, Amorim, David, Biancacci, Nicolo, Buffat, Xavier, Maclean, Ewen Hamish, Metral, Elias, Lasocha, Kacper, Lefevre, Thibaut, Levens, Tom, Salvant, Benoit
Lenguaje:eng
Publicado: 2017
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/2253143
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author Carver, Lee Robert
Schenk, Michael
De Maria, Riccardo
Li, Kevin Shing Bruce
Amorim, David
Biancacci, Nicolo
Buffat, Xavier
Maclean, Ewen Hamish
Metral, Elias
Lasocha, Kacper
Lefevre, Thibaut
Levens, Tom
Salvant, Benoit
author_facet Carver, Lee Robert
Schenk, Michael
De Maria, Riccardo
Li, Kevin Shing Bruce
Amorim, David
Biancacci, Nicolo
Buffat, Xavier
Maclean, Ewen Hamish
Metral, Elias
Lasocha, Kacper
Lefevre, Thibaut
Levens, Tom
Salvant, Benoit
author_sort Carver, Lee Robert
collection CERN
description During MD1751, it was observed that both a full single beam and 964 non-colliding bunches in Beam 1 (B1) and Beam 2 (B2) were both stable at the End of Squeeze (EOS) for 0A in the Landau Octupoles. At ß* = 40cm there is also a significant Q" arising from the lattice, as well as uncorrected non-linearities in the Insertion Regions (IRs). Each of these effects could be capable of fully stabilising the beam. This MD made first use of a Q" knob through variation of the Main Sextupoles (MS) by stabilising a single bunch at Flat Top, before showing at EOS that the non-linearities were the main contributors to the beam stability.
id cern-2253143
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2017
record_format invenio
spelling cern-22531432019-09-30T06:29:59Zhttp://cds.cern.ch/record/2253143engCarver, Lee RobertSchenk, MichaelDe Maria, RiccardoLi, Kevin Shing BruceAmorim, DavidBiancacci, NicoloBuffat, XavierMaclean, Ewen HamishMetral, EliasLasocha, KacperLefevre, ThibautLevens, TomSalvant, BenoitMD1831: Single Bunch Instabilities with Q" and Non-Linear CorrectionsAccelerators and Storage RingsDuring MD1751, it was observed that both a full single beam and 964 non-colliding bunches in Beam 1 (B1) and Beam 2 (B2) were both stable at the End of Squeeze (EOS) for 0A in the Landau Octupoles. At ß* = 40cm there is also a significant Q" arising from the lattice, as well as uncorrected non-linearities in the Insertion Regions (IRs). Each of these effects could be capable of fully stabilising the beam. This MD made first use of a Q" knob through variation of the Main Sextupoles (MS) by stabilising a single bunch at Flat Top, before showing at EOS that the non-linearities were the main contributors to the beam stability.CERN-ACC-NOTE-2017-0012oai:cds.cern.ch:22531432017-02-21
spellingShingle Accelerators and Storage Rings
Carver, Lee Robert
Schenk, Michael
De Maria, Riccardo
Li, Kevin Shing Bruce
Amorim, David
Biancacci, Nicolo
Buffat, Xavier
Maclean, Ewen Hamish
Metral, Elias
Lasocha, Kacper
Lefevre, Thibaut
Levens, Tom
Salvant, Benoit
MD1831: Single Bunch Instabilities with Q" and Non-Linear Corrections
title MD1831: Single Bunch Instabilities with Q" and Non-Linear Corrections
title_full MD1831: Single Bunch Instabilities with Q" and Non-Linear Corrections
title_fullStr MD1831: Single Bunch Instabilities with Q" and Non-Linear Corrections
title_full_unstemmed MD1831: Single Bunch Instabilities with Q" and Non-Linear Corrections
title_short MD1831: Single Bunch Instabilities with Q" and Non-Linear Corrections
title_sort md1831: single bunch instabilities with q" and non-linear corrections
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/2253143
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