Observations on bunch length histogram splitting and selective emittance blow-up in LHC Beam 1

In November 2012, LHC shift crews observed a splitting of the beam 1 bunch length histogram on the fixed display for fills lasting several hours in Stable Beams. Later offline analysis showed an increased selective blow-up of the transverse emittance in the cycle before the start of Stable Beams for...

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Detalles Bibliográficos
Autores principales: Hostettler, M, Arduini, G, Papotti, G
Lenguaje:eng
Publicado: 2013
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/1504866
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author Hostettler, M
Arduini, G
Papotti, G
author_facet Hostettler, M
Arduini, G
Papotti, G
author_sort Hostettler, M
collection CERN
description In November 2012, LHC shift crews observed a splitting of the beam 1 bunch length histogram on the fixed display for fills lasting several hours in Stable Beams. Later offline analysis showed an increased selective blow-up of the transverse emittance in the cycle before the start of Stable Beams for the same fills. This note shows the correlation between the two effects and mentions a possible explanation for the selective emittance blow-up.
id cern-1504866
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2013
record_format invenio
spelling cern-15048662019-09-30T06:29:59Zhttp://cds.cern.ch/record/1504866engHostettler, MArduini, GPapotti, GObservations on bunch length histogram splitting and selective emittance blow-up in LHC Beam 1Accelerators and Storage RingsIn November 2012, LHC shift crews observed a splitting of the beam 1 bunch length histogram on the fixed display for fills lasting several hours in Stable Beams. Later offline analysis showed an increased selective blow-up of the transverse emittance in the cycle before the start of Stable Beams for the same fills. This note shows the correlation between the two effects and mentions a possible explanation for the selective emittance blow-up.CERN-ATS-Note-2013-003 PERFoai:cds.cern.ch:15048662013-01-15
spellingShingle Accelerators and Storage Rings
Hostettler, M
Arduini, G
Papotti, G
Observations on bunch length histogram splitting and selective emittance blow-up in LHC Beam 1
title Observations on bunch length histogram splitting and selective emittance blow-up in LHC Beam 1
title_full Observations on bunch length histogram splitting and selective emittance blow-up in LHC Beam 1
title_fullStr Observations on bunch length histogram splitting and selective emittance blow-up in LHC Beam 1
title_full_unstemmed Observations on bunch length histogram splitting and selective emittance blow-up in LHC Beam 1
title_short Observations on bunch length histogram splitting and selective emittance blow-up in LHC Beam 1
title_sort observations on bunch length histogram splitting and selective emittance blow-up in lhc beam 1
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/1504866
work_keys_str_mv AT hostettlerm observationsonbunchlengthhistogramsplittingandselectiveemittanceblowupinlhcbeam1
AT arduinig observationsonbunchlengthhistogramsplittingandselectiveemittanceblowupinlhcbeam1
AT papottig observationsonbunchlengthhistogramsplittingandselectiveemittanceblowupinlhcbeam1

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