Origins of transverse emittance blow-up during the LHC energy tramp

During LHC Run 1 about 30 % of the potential peak performance was lost due to transverse emittance blow-up through the LHC cycle. Measurements indicated that the majority of the blow-up occurred during the energy ramp. Until the end of LHC Run 1 this emittance blow-up could not be eliminated. In thi...

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Detalles Bibliográficos
Autores principales: Kuhn, M, Langner, A, Arduini, G, Kain, V, Schaumann, M, Tomas, R
Lenguaje:eng
Publicado: 2014
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/1742306
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author Kuhn, M
Langner, A
Arduini, G
Kain, V
Schaumann, M
Tomas, R
author_facet Kuhn, M
Langner, A
Arduini, G
Kain, V
Schaumann, M
Tomas, R
author_sort Kuhn, M
collection CERN
description During LHC Run 1 about 30 % of the potential peak performance was lost due to transverse emittance blow-up through the LHC cycle. Measurements indicated that the majority of the blow-up occurred during the energy ramp. Until the end of LHC Run 1 this emittance blow-up could not be eliminated. In this paper the measurements and observations of emittance growth through the ramp are summarized. Simulation results for growth due to Intra Beam Scattering will be shown and compared to measurements. A summary of investigations of other possible sources will be given and backed up with simulations where possible. Requirements for commissioning the LHC with beam in 2015 after Long Shutdown 1 to understand and control emittance blow-up will be listed.
id cern-1742306
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2014
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spelling cern-17423062022-08-17T13:31:33Zhttp://cds.cern.ch/record/1742306engKuhn, MLangner, AArduini, GKain, VSchaumann, MTomas, ROrigins of transverse emittance blow-up during the LHC energy trampAccelerators and Storage RingsDuring LHC Run 1 about 30 % of the potential peak performance was lost due to transverse emittance blow-up through the LHC cycle. Measurements indicated that the majority of the blow-up occurred during the energy ramp. Until the end of LHC Run 1 this emittance blow-up could not be eliminated. In this paper the measurements and observations of emittance growth through the ramp are summarized. Simulation results for growth due to Intra Beam Scattering will be shown and compared to measurements. A summary of investigations of other possible sources will be given and backed up with simulations where possible. Requirements for commissioning the LHC with beam in 2015 after Long Shutdown 1 to understand and control emittance blow-up will be listed.CERN-ACC-2014-0158oai:cds.cern.ch:17423062014
spellingShingle Accelerators and Storage Rings
Kuhn, M
Langner, A
Arduini, G
Kain, V
Schaumann, M
Tomas, R
Origins of transverse emittance blow-up during the LHC energy tramp
title Origins of transverse emittance blow-up during the LHC energy tramp
title_full Origins of transverse emittance blow-up during the LHC energy tramp
title_fullStr Origins of transverse emittance blow-up during the LHC energy tramp
title_full_unstemmed Origins of transverse emittance blow-up during the LHC energy tramp
title_short Origins of transverse emittance blow-up during the LHC energy tramp
title_sort origins of transverse emittance blow-up during the lhc energy tramp
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/1742306
work_keys_str_mv AT kuhnm originsoftransverseemittanceblowupduringthelhcenergytramp
AT langnera originsoftransverseemittanceblowupduringthelhcenergytramp
AT arduinig originsoftransverseemittanceblowupduringthelhcenergytramp
AT kainv originsoftransverseemittanceblowupduringthelhcenergytramp
AT schaumannm originsoftransverseemittanceblowupduringthelhcenergytramp
AT tomasr originsoftransverseemittanceblowupduringthelhcenergytramp

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