DC breakdown experiments with cobalt electrodes

RF accelerating structures of the Compact Linear Collider (CLIC) require a material capable of sustaining high electric field with a low breakdown rate and low induced damage. Because of the similarity of many aspects of DC and RF breakdown, a DC breakdown study is underway at CERN in order to test...

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Detalles Bibliográficos
Autores principales: Descoeudres, Antoine, Djurabekova, Flyura, Nordlund, Kai
Lenguaje:eng
Publicado: 2009
Materias:
Accelerators and Storage Rings
Acceso en línea:https://dx.doi.org/10.17181/CLIC-Note-875
http://cds.cern.ch/record/1355401
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author Descoeudres, Antoine
Djurabekova, Flyura
Nordlund, Kai
author_facet Descoeudres, Antoine
Djurabekova, Flyura
Nordlund, Kai
author_sort Descoeudres, Antoine
collection CERN
description RF accelerating structures of the Compact Linear Collider (CLIC) require a material capable of sustaining high electric field with a low breakdown rate and low induced damage. Because of the similarity of many aspects of DC and RF breakdown, a DC breakdown study is underway at CERN in order to test candidate materials and surface preparations, and have a better understanding of the breakdown mechanism under ultra-high vacuum in a simple setup. The conditioning speed, breakdown field and field enhancement factor of cobalt have been measured. The average breakdown field after conditioning reaches 615 MV/m, which places cobalt amongst the best materials tested so far. By comparison with results and properties of other metals, the high breakdown field of Co could be due to its high work function and maybe also to its hexagonal crystal structure. Geneva, Switzerland (June 2009) CLIC – Note – 875
id cern-1355401
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2009
record_format invenio
spelling cern-13554012023-07-20T15:06:29Zdoi:10.17181/CLIC-Note-875http://cds.cern.ch/record/1355401engDescoeudres, AntoineDjurabekova, FlyuraNordlund, KaiDC breakdown experiments with cobalt electrodesAccelerators and Storage RingsRF accelerating structures of the Compact Linear Collider (CLIC) require a material capable of sustaining high electric field with a low breakdown rate and low induced damage. Because of the similarity of many aspects of DC and RF breakdown, a DC breakdown study is underway at CERN in order to test candidate materials and surface preparations, and have a better understanding of the breakdown mechanism under ultra-high vacuum in a simple setup. The conditioning speed, breakdown field and field enhancement factor of cobalt have been measured. The average breakdown field after conditioning reaches 615 MV/m, which places cobalt amongst the best materials tested so far. By comparison with results and properties of other metals, the high breakdown field of Co could be due to its high work function and maybe also to its hexagonal crystal structure. Geneva, Switzerland (June 2009) CLIC – Note – 875CERN-OPEN-2011-029CLIC-Note-875oai:cds.cern.ch:13554012009-06-01
spellingShingle Accelerators and Storage Rings
Descoeudres, Antoine
Djurabekova, Flyura
Nordlund, Kai
DC breakdown experiments with cobalt electrodes
title DC breakdown experiments with cobalt electrodes
title_full DC breakdown experiments with cobalt electrodes
title_fullStr DC breakdown experiments with cobalt electrodes
title_full_unstemmed DC breakdown experiments with cobalt electrodes
title_short DC breakdown experiments with cobalt electrodes
title_sort dc breakdown experiments with cobalt electrodes
topic Accelerators and Storage Rings
url https://dx.doi.org/10.17181/CLIC-Note-875
http://cds.cern.ch/record/1355401
work_keys_str_mv AT descoeudresantoine dcbreakdownexperimentswithcobaltelectrodes
AT djurabekovaflyura dcbreakdownexperimentswithcobaltelectrodes
AT nordlundkai dcbreakdownexperimentswithcobaltelectrodes

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