Higher order modes in third harmonic cavities for XFEL/FLASH

We analyse higher order modes in the 3.9 GHz bunch shaping cavities recently installed in the FLASH facility at DESY. We report on recent experimental results on the frequency spectrum from probe based measurements made at CMTB at DESY. These are compared to those predicted by finite difference and...

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Autores principales: Shinton, I R R, Baboi, N, Eddy, N, Flisgen, T, Glock, H W, Jones, R M, Juntong, N, Khabiboulline, T N, Van Rienen, U, Zhang, P
Formato: info:eu-repo/semantics/article
Lenguaje:eng
Publicado: 2010
Materias:
Accelerators and Storage Rings
10: SC RF technology for higher intensity proton accelerators and higher energy electron linacs
Acceso en línea:http://cds.cern.ch/record/1552866
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author Shinton, I R R
Baboi, N
Eddy, N
Flisgen, T
Glock, H W
Jones, R M
Juntong, N
Khabiboulline, T N
Van Rienen, U
Zhang, P
author_facet Shinton, I R R
Baboi, N
Eddy, N
Flisgen, T
Glock, H W
Jones, R M
Juntong, N
Khabiboulline, T N
Van Rienen, U
Zhang, P
author_sort Shinton, I R R
collection CERN
description We analyse higher order modes in the 3.9 GHz bunch shaping cavities recently installed in the FLASH facility at DESY. We report on recent experimental results on the frequency spectrum from probe based measurements made at CMTB at DESY. These are compared to those predicted by finite difference and finite element computer codes. This study is focused mainly on the dipole component of the multi-pole expansion of the wakefield. The modes are readily identifiable as single-cavity modes provided the frequencies of these modes are below the cut-off of the inter-connecting beam pipes. The modes above cut-off are coupled to the 4 cavities and are distinct from single cavity modes.
format info:eu-repo/semantics/article
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2010
record_format invenio
spelling cern-15528662019-09-30T06:29:59Z http://cds.cern.ch/record/1552866 eng Shinton, I R R Baboi, N Eddy, N Flisgen, T Glock, H W Jones, R M Juntong, N Khabiboulline, T N Van Rienen, U Zhang, P Higher order modes in third harmonic cavities for XFEL/FLASH Accelerators and Storage Rings 10: SC RF technology for higher intensity proton accelerators and higher energy electron linacs We analyse higher order modes in the 3.9 GHz bunch shaping cavities recently installed in the FLASH facility at DESY. We report on recent experimental results on the frequency spectrum from probe based measurements made at CMTB at DESY. These are compared to those predicted by finite difference and finite element computer codes. This study is focused mainly on the dipole component of the multi-pole expansion of the wakefield. The modes are readily identifiable as single-cavity modes provided the frequencies of these modes are below the cut-off of the inter-connecting beam pipes. The modes above cut-off are coupled to the 4 cavities and are distinct from single cavity modes. info:eu-repo/grantAgreement/EC/FP7/227579 info:eu-repo/semantics/openAccess Education Level info:eu-repo/semantics/article http://cds.cern.ch/record/1552866 2010
spellingShingle Accelerators and Storage Rings
10: SC RF technology for higher intensity proton accelerators and higher energy electron linacs
Shinton, I R R
Baboi, N
Eddy, N
Flisgen, T
Glock, H W
Jones, R M
Juntong, N
Khabiboulline, T N
Van Rienen, U
Zhang, P
Higher order modes in third harmonic cavities for XFEL/FLASH
title Higher order modes in third harmonic cavities for XFEL/FLASH
title_full Higher order modes in third harmonic cavities for XFEL/FLASH
title_fullStr Higher order modes in third harmonic cavities for XFEL/FLASH
title_full_unstemmed Higher order modes in third harmonic cavities for XFEL/FLASH
title_short Higher order modes in third harmonic cavities for XFEL/FLASH
title_sort higher order modes in third harmonic cavities for xfel/flash
topic Accelerators and Storage Rings
10: SC RF technology for higher intensity proton accelerators and higher energy electron linacs
url http://cds.cern.ch/record/1552866
http://cds.cern.ch/record/1552866
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AT flisgent higherordermodesinthirdharmoniccavitiesforxfelflash
AT glockhw higherordermodesinthirdharmoniccavitiesforxfelflash
AT jonesrm higherordermodesinthirdharmoniccavitiesforxfelflash
AT juntongn higherordermodesinthirdharmoniccavitiesforxfelflash
AT khabiboullinetn higherordermodesinthirdharmoniccavitiesforxfelflash
AT vanrienenu higherordermodesinthirdharmoniccavitiesforxfelflash
AT zhangp higherordermodesinthirdharmoniccavitiesforxfelflash

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