Optics Configurations for Improved Machine Impedance and Cleaning Performance of a Multi-Stage Collimation Insertion

For a two-stage collimation system, the betatron phase advance between the primary and secondary stages is usually set to maximise the absorption of secondary particles outscattered from the primary. Another constraint is the contribution to the ring impedance of the collimation system, which can be...

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Detalles Bibliográficos
Autores principales: Bruce, Roderik, De Maria, Riccardo, Giovannozzi, Massimo, Mounet, Nicolas, Redaelli, Stefano
Lenguaje:eng
Publicado: 2021
Materias:
Accelerators and Storage Rings
Acceso en línea:https://dx.doi.org/10.18429/JACoW-IPAC2021-MOPAB006
http://cds.cern.ch/record/2783796
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author Bruce, Roderik
De Maria, Riccardo
Giovannozzi, Massimo
Mounet, Nicolas
Redaelli, Stefano
author_facet Bruce, Roderik
De Maria, Riccardo
Giovannozzi, Massimo
Mounet, Nicolas
Redaelli, Stefano
author_sort Bruce, Roderik
collection CERN
description For a two-stage collimation system, the betatron phase advance between the primary and secondary stages is usually set to maximise the absorption of secondary particles outscattered from the primary. Another constraint is the contribution to the ring impedance of the collimation system, which can be decreased through an optimized insertion optics, featuring large values of the beta functions. In this article we report on first studies of such an optics for the CERN LHC. In addition to a gain in impedance, we show that the cleaning efficiency can be improved thanks to the large beta functions, even though the phase advance is not set at the theoretical optimum.
id cern-2783796
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2021
record_format invenio
spelling cern-27837962021-10-12T20:27:54Zdoi:10.18429/JACoW-IPAC2021-MOPAB006http://cds.cern.ch/record/2783796engBruce, RoderikDe Maria, RiccardoGiovannozzi, MassimoMounet, NicolasRedaelli, StefanoOptics Configurations for Improved Machine Impedance and Cleaning Performance of a Multi-Stage Collimation InsertionAccelerators and Storage RingsFor a two-stage collimation system, the betatron phase advance between the primary and secondary stages is usually set to maximise the absorption of secondary particles outscattered from the primary. Another constraint is the contribution to the ring impedance of the collimation system, which can be decreased through an optimized insertion optics, featuring large values of the beta functions. In this article we report on first studies of such an optics for the CERN LHC. In addition to a gain in impedance, we show that the cleaning efficiency can be improved thanks to the large beta functions, even though the phase advance is not set at the theoretical optimum.oai:cds.cern.ch:27837962021
spellingShingle Accelerators and Storage Rings
Bruce, Roderik
De Maria, Riccardo
Giovannozzi, Massimo
Mounet, Nicolas
Redaelli, Stefano
Optics Configurations for Improved Machine Impedance and Cleaning Performance of a Multi-Stage Collimation Insertion
title Optics Configurations for Improved Machine Impedance and Cleaning Performance of a Multi-Stage Collimation Insertion
title_full Optics Configurations for Improved Machine Impedance and Cleaning Performance of a Multi-Stage Collimation Insertion
title_fullStr Optics Configurations for Improved Machine Impedance and Cleaning Performance of a Multi-Stage Collimation Insertion
title_full_unstemmed Optics Configurations for Improved Machine Impedance and Cleaning Performance of a Multi-Stage Collimation Insertion
title_short Optics Configurations for Improved Machine Impedance and Cleaning Performance of a Multi-Stage Collimation Insertion
title_sort optics configurations for improved machine impedance and cleaning performance of a multi-stage collimation insertion
topic Accelerators and Storage Rings
url https://dx.doi.org/10.18429/JACoW-IPAC2021-MOPAB006
http://cds.cern.ch/record/2783796
work_keys_str_mv AT bruceroderik opticsconfigurationsforimprovedmachineimpedanceandcleaningperformanceofamultistagecollimationinsertion
AT demariariccardo opticsconfigurationsforimprovedmachineimpedanceandcleaningperformanceofamultistagecollimationinsertion
AT giovannozzimassimo opticsconfigurationsforimprovedmachineimpedanceandcleaningperformanceofamultistagecollimationinsertion
AT mounetnicolas opticsconfigurationsforimprovedmachineimpedanceandcleaningperformanceofamultistagecollimationinsertion
AT redaellistefano opticsconfigurationsforimprovedmachineimpedanceandcleaningperformanceofamultistagecollimationinsertion

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