Designing the four rod crab cavity for the high-luminosity LHC upgrade
This thesis presents the design for a novel compact crab cavity for the HL-LHC upgrade at CERN, Geneva. The LHC requires 400MHz RF cavities that can provide up to 10MV transverse gradient across two to three cavities with suitably low surface fields for continual operation. As a result, a cavity des...
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ndltd-bl.uk-oai-ethos.bl.uk-6585872018-10-03T03:22:40ZDesigning the four rod crab cavity for the high-luminosity LHC upgradeHall, BenBurt, Graeme2012This thesis presents the design for a novel compact crab cavity for the HL-LHC upgrade at CERN, Geneva. The LHC requires 400MHz RF cavities that can provide up to 10MV transverse gradient across two to three cavities with suitably low surface fields for continual operation. As a result, a cavity design was required that would be optimised to these new parameters. From initial design studies based on Jefferson Laboratory’s CEBAF deflector, extensive optimization was carried out to design a superconducting crab cavity, dubbed the Four Rod Crab Cavity (4RCC). The design underwent several iterations throughout the course of the project due to changing requirements from CERN, particularly space requirements inside the LHC. In addition, it was decided that a focus on field flatness was required. An aluminium prototype was then constructed from the finalised and computer-simulated design to confirm the designed field flatness. Additional computer simulation studies using CST were performed to ensure that multipacting and higher order modes were at tolerable levels. Design considerations were made to ensure a niobium prototype could be constructed for cold testing, the results of which are presented along with discussion of future plans for continuing to further the design of the cavity.539.7Lancaster Universityhttps://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.658587http://eprints.lancs.ac.uk/76341/Electronic Thesis or Dissertation |
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539.7 Hall, Ben Designing the four rod crab cavity for the high-luminosity LHC upgrade |
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This thesis presents the design for a novel compact crab cavity for the HL-LHC upgrade at CERN, Geneva. The LHC requires 400MHz RF cavities that can provide up to 10MV transverse gradient across two to three cavities with suitably low surface fields for continual operation. As a result, a cavity design was required that would be optimised to these new parameters. From initial design studies based on Jefferson Laboratory’s CEBAF deflector, extensive optimization was carried out to design a superconducting crab cavity, dubbed the Four Rod Crab Cavity (4RCC). The design underwent several iterations throughout the course of the project due to changing requirements from CERN, particularly space requirements inside the LHC. In addition, it was decided that a focus on field flatness was required. An aluminium prototype was then constructed from the finalised and computer-simulated design to confirm the designed field flatness. Additional computer simulation studies using CST were performed to ensure that multipacting and higher order modes were at tolerable levels. Design considerations were made to ensure a niobium prototype could be constructed for cold testing, the results of which are presented along with discussion of future plans for continuing to further the design of the cavity. |
author2 |
Burt, Graeme |
author_facet |
Burt, Graeme Hall, Ben |
author |
Hall, Ben |
author_sort |
Hall, Ben |
title |
Designing the four rod crab cavity for the high-luminosity LHC upgrade |
title_short |
Designing the four rod crab cavity for the high-luminosity LHC upgrade |
title_full |
Designing the four rod crab cavity for the high-luminosity LHC upgrade |
title_fullStr |
Designing the four rod crab cavity for the high-luminosity LHC upgrade |
title_full_unstemmed |
Designing the four rod crab cavity for the high-luminosity LHC upgrade |
title_sort |
designing the four rod crab cavity for the high-luminosity lhc upgrade |
publisher |
Lancaster University |
publishDate |
2012 |
url |
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.658587 |
work_keys_str_mv |
AT hallben designingthefourrodcrabcavityforthehighluminositylhcupgrade |
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1718757958784909312 |