Transverse low frequency broad-band impedance measurements in the CERN PS

The base-line scenario for the High-Luminosity LHC upgrade foresees an intensity increase delivered by the injectors. With its 53 years, the CERN PS would have to operate beyond the limit of its performance to match the future requirements. Beam instabilities driven by transverse impedance are an im...

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Detalles Bibliográficos
Autores principales: Aumon, S, Freyermuth, P, Gilardoni, S, Hans, O, Metral, E, Rumolo, G
Lenguaje:eng
Publicado: 2011
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/1381217
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author Aumon, S
Freyermuth, P
Gilardoni, S
Hans, O
Metral, E
Rumolo, G
author_facet Aumon, S
Freyermuth, P
Gilardoni, S
Hans, O
Metral, E
Rumolo, G
author_sort Aumon, S
collection CERN
description The base-line scenario for the High-Luminosity LHC upgrade foresees an intensity increase delivered by the injectors. With its 53 years, the CERN PS would have to operate beyond the limit of its performance to match the future requirements. Beam instabilities driven by transverse impedance are an important issue for the operation with high intensity beams as for the high-brightness LHC beams. Measurements of transverse tune dependence with beam intensity were performed at injection kinetic energy 1.4 GeV and at LHC beam extraction momentum 26 GeV/c. This allows deducing the low frequency inductive broad-band impedance of the machine. Then an estimation of the real part of the impedance is made by the rise time measurement of a fast transverse instability at transition energy believed to be a TMCI type. Those are the first step towards a global machine impedance characterization in order to push forward the performances of the accelerator.
id cern-1381217
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
record_format invenio
spelling cern-13812172022-08-17T13:31:00Zhttp://cds.cern.ch/record/1381217engAumon, SFreyermuth, PGilardoni, SHans, OMetral, ERumolo, GTransverse low frequency broad-band impedance measurements in the CERN PSAccelerators and Storage RingsThe base-line scenario for the High-Luminosity LHC upgrade foresees an intensity increase delivered by the injectors. With its 53 years, the CERN PS would have to operate beyond the limit of its performance to match the future requirements. Beam instabilities driven by transverse impedance are an important issue for the operation with high intensity beams as for the high-brightness LHC beams. Measurements of transverse tune dependence with beam intensity were performed at injection kinetic energy 1.4 GeV and at LHC beam extraction momentum 26 GeV/c. This allows deducing the low frequency inductive broad-band impedance of the machine. Then an estimation of the real part of the impedance is made by the rise time measurement of a fast transverse instability at transition energy believed to be a TMCI type. Those are the first step towards a global machine impedance characterization in order to push forward the performances of the accelerator.CERN-ATS-2011-089oai:cds.cern.ch:13812172011-09-12
spellingShingle Accelerators and Storage Rings
Aumon, S
Freyermuth, P
Gilardoni, S
Hans, O
Metral, E
Rumolo, G
Transverse low frequency broad-band impedance measurements in the CERN PS
title Transverse low frequency broad-band impedance measurements in the CERN PS
title_full Transverse low frequency broad-band impedance measurements in the CERN PS
title_fullStr Transverse low frequency broad-band impedance measurements in the CERN PS
title_full_unstemmed Transverse low frequency broad-band impedance measurements in the CERN PS
title_short Transverse low frequency broad-band impedance measurements in the CERN PS
title_sort transverse low frequency broad-band impedance measurements in the cern ps
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/1381217
work_keys_str_mv AT aumons transverselowfrequencybroadbandimpedancemeasurementsinthecernps
AT freyermuthp transverselowfrequencybroadbandimpedancemeasurementsinthecernps
AT gilardonis transverselowfrequencybroadbandimpedancemeasurementsinthecernps
AT hanso transverselowfrequencybroadbandimpedancemeasurementsinthecernps
AT metrale transverselowfrequencybroadbandimpedancemeasurementsinthecernps
AT rumolog transverselowfrequencybroadbandimpedancemeasurementsinthecernps

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