Intensity dependance of the train instability threshold and high pile-up test with 12b trains (MD3294)

As signs of electron cloud driven instabilities at top energy were observed in MDs in 2017 even with short trains(12b), an additional experiment was performed in 2018 to assess the intensity scaling of this instability mechanism using high intensity 12b trains available from the existing in...

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Autores principales: Buffat, Xavier, Amorim, David, Antipov, Sergey, Bartosik, Hannes, Crockford, Guy, Furuseth, Sondre, Iadarola, Giovanni, Levens, Tom, Metral, Elias, Mounet, Nicolas, Uznanski, Slawosz, Salvant, Benoit, Schaumann, Michaela, Walsh, David John
Lenguaje:eng
Publicado: 2019
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/2682943
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author Buffat, Xavier
Amorim, David
Antipov, Sergey
Bartosik, Hannes
Crockford, Guy
Furuseth, Sondre
Iadarola, Giovanni
Levens, Tom
Metral, Elias
Mounet, Nicolas
Uznanski, Slawosz
Salvant, Benoit
Schaumann, Michaela
Walsh, David John
author_facet Buffat, Xavier
Amorim, David
Antipov, Sergey
Bartosik, Hannes
Crockford, Guy
Furuseth, Sondre
Iadarola, Giovanni
Levens, Tom
Metral, Elias
Mounet, Nicolas
Uznanski, Slawosz
Salvant, Benoit
Schaumann, Michaela
Walsh, David John
author_sort Buffat, Xavier
collection CERN
description As signs of electron cloud driven instabilities at top energy were observed in MDs in 2017 even with short trains(12b), an additional experiment was performed in 2018 to assess the intensity scaling of this instability mechanism using high intensity 12b trains available from the existing injector chain, i.e. without upgrade. An intensity dependence of the instability threshold could be observed at constant brightness, nevertheless the instability detected seem to be of the different type w.r.t. those observed in past experiments. The high intensity 12b trains were used to provide the highest pile-up with 25ns spacing to the experiment in order to probe regimens close to ones expected in the HL-LHC era. The machine and beam aspects are described in this note.
id cern-2682943
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2019
record_format invenio
spelling cern-26829432019-09-30T06:29:59Zhttp://cds.cern.ch/record/2682943engBuffat, XavierAmorim, DavidAntipov, SergeyBartosik, HannesCrockford, GuyFuruseth, SondreIadarola, GiovanniLevens, TomMetral, EliasMounet, NicolasUznanski, SlawoszSalvant, BenoitSchaumann, MichaelaWalsh, David JohnIntensity dependance of the train instability threshold and high pile-up test with 12b trains (MD3294)Accelerators and Storage RingsAs signs of electron cloud driven instabilities at top energy were observed in MDs in 2017 even with short trains(12b), an additional experiment was performed in 2018 to assess the intensity scaling of this instability mechanism using high intensity 12b trains available from the existing injector chain, i.e. without upgrade. An intensity dependence of the instability threshold could be observed at constant brightness, nevertheless the instability detected seem to be of the different type w.r.t. those observed in past experiments. The high intensity 12b trains were used to provide the highest pile-up with 25ns spacing to the experiment in order to probe regimens close to ones expected in the HL-LHC era. The machine and beam aspects are described in this note. CERN-ACC-NOTE-2019-0027oai:cds.cern.ch:26829432019-03-28
spellingShingle Accelerators and Storage Rings
Buffat, Xavier
Amorim, David
Antipov, Sergey
Bartosik, Hannes
Crockford, Guy
Furuseth, Sondre
Iadarola, Giovanni
Levens, Tom
Metral, Elias
Mounet, Nicolas
Uznanski, Slawosz
Salvant, Benoit
Schaumann, Michaela
Walsh, David John
Intensity dependance of the train instability threshold and high pile-up test with 12b trains (MD3294)
title Intensity dependance of the train instability threshold and high pile-up test with 12b trains (MD3294)
title_full Intensity dependance of the train instability threshold and high pile-up test with 12b trains (MD3294)
title_fullStr Intensity dependance of the train instability threshold and high pile-up test with 12b trains (MD3294)
title_full_unstemmed Intensity dependance of the train instability threshold and high pile-up test with 12b trains (MD3294)
title_short Intensity dependance of the train instability threshold and high pile-up test with 12b trains (MD3294)
title_sort intensity dependance of the train instability threshold and high pile-up test with 12b trains (md3294)
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/2682943
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