Investigation of Damping Effects of the Crab Cavity Noise Induced Emittance Growth

Crab cavities will be installed at the two main interaction points (IP1 and IP5) of the High Luminosity LHC (HL-LHC) in order to minimize the geometric reduction of the luminosity due to the crossing angle. Two prototype crab cavities have been installed into the SPS machine and were tested with a p...

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Detalles Bibliográficos
Autores principales: Triantafyllou, Natalia, Antoniou, Fanouria, Bartosik, Hannes, Baudrenghien, Philippe, Buffat, Xavier, Calaga, Rama, Carver, Lee R, Mastoridis, Themis, Papaphilippou, Yannis, Wolski, Andrzej
Lenguaje:eng
Publicado: JACoW 2021
Materias:
Accelerators and Storage Rings
Acceso en línea:https://dx.doi.org/10.18429/JACoW-IPAC2021-TUPAB256
http://cds.cern.ch/record/2811864
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author Triantafyllou, Natalia
Antoniou, Fanouria
Bartosik, Hannes
Baudrenghien, Philippe
Buffat, Xavier
Calaga, Rama
Carver, Lee R
Mastoridis, Themis
Papaphilippou, Yannis
Wolski, Andrzej
author_facet Triantafyllou, Natalia
Antoniou, Fanouria
Bartosik, Hannes
Baudrenghien, Philippe
Buffat, Xavier
Calaga, Rama
Carver, Lee R
Mastoridis, Themis
Papaphilippou, Yannis
Wolski, Andrzej
author_sort Triantafyllou, Natalia
collection CERN
description Crab cavities will be installed at the two main interaction points (IP1 and IP5) of the High Luminosity LHC (HL-LHC) in order to minimize the geometric reduction of the luminosity due to the crossing angle. Two prototype crab cavities have been installed into the SPS machine and were tested with a proton beam in 2018, to study the expected emittance growth induced by RF noise. The measured emittance growth was found to be a factor 2-3 lower than predicted from the available analytical and computational models. Damping mechanisms from the transverse impedance, which is not included in the available theories, are studied as a possible explanation for the observed discrepancy.
id cern-2811864
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2021
publisher JACoW
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spelling cern-28118642022-06-10T23:32:21Zdoi:10.18429/JACoW-IPAC2021-TUPAB256http://cds.cern.ch/record/2811864engTriantafyllou, NataliaAntoniou, FanouriaBartosik, HannesBaudrenghien, PhilippeBuffat, XavierCalaga, RamaCarver, Lee RMastoridis, ThemisPapaphilippou, YannisWolski, AndrzejInvestigation of Damping Effects of the Crab Cavity Noise Induced Emittance GrowthAccelerators and Storage RingsCrab cavities will be installed at the two main interaction points (IP1 and IP5) of the High Luminosity LHC (HL-LHC) in order to minimize the geometric reduction of the luminosity due to the crossing angle. Two prototype crab cavities have been installed into the SPS machine and were tested with a proton beam in 2018, to study the expected emittance growth induced by RF noise. The measured emittance growth was found to be a factor 2-3 lower than predicted from the available analytical and computational models. Damping mechanisms from the transverse impedance, which is not included in the available theories, are studied as a possible explanation for the observed discrepancy.JACoWoai:cds.cern.ch:28118642021
spellingShingle Accelerators and Storage Rings
Triantafyllou, Natalia
Antoniou, Fanouria
Bartosik, Hannes
Baudrenghien, Philippe
Buffat, Xavier
Calaga, Rama
Carver, Lee R
Mastoridis, Themis
Papaphilippou, Yannis
Wolski, Andrzej
Investigation of Damping Effects of the Crab Cavity Noise Induced Emittance Growth
title Investigation of Damping Effects of the Crab Cavity Noise Induced Emittance Growth
title_full Investigation of Damping Effects of the Crab Cavity Noise Induced Emittance Growth
title_fullStr Investigation of Damping Effects of the Crab Cavity Noise Induced Emittance Growth
title_full_unstemmed Investigation of Damping Effects of the Crab Cavity Noise Induced Emittance Growth
title_short Investigation of Damping Effects of the Crab Cavity Noise Induced Emittance Growth
title_sort investigation of damping effects of the crab cavity noise induced emittance growth
topic Accelerators and Storage Rings
url https://dx.doi.org/10.18429/JACoW-IPAC2021-TUPAB256
http://cds.cern.ch/record/2811864
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