A Study of Beam Alignment Based on Coupling Modes in Third Harmonic Superconducting Cavities at FLASH

This paper presents a study of beam alignment in accelerating cavities based on beam-excited higher order modes (HOM). Among the transverse HOMs, dipole modes have the dominant contribution, and may have an adverse effect on the beam quality. Since they depend linearly on the transverse beam offset,...

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Detalles Bibliográficos
Autores principales: Zhang, P, Baboi, N, Jones, R M
Formato: info:eu-repo/semantics/article
Lenguaje:eng
Publicado: 2011
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/1408717
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author Zhang, P
Baboi, N
Jones, R M
author_facet Zhang, P
Baboi, N
Jones, R M
author_sort Zhang, P
collection CERN
description This paper presents a study of beam alignment in accelerating cavities based on beam-excited higher order modes (HOM). Among the transverse HOMs, dipole modes have the dominant contribution, and may have an adverse effect on the beam quality. Since they depend linearly on the transverse beam offset, their effect can be reduced by aligning the beam in the cavity. The study has been made on the four third harmonic superconducting cavities installed in the ACC39 module at FLASH. Modes with strong beam coupling were monitored while moving the beam and searching for the minimum excited HOM power.
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spelling cern-14087172019-09-30T06:29:59Z http://cds.cern.ch/record/1408717 eng Zhang, P Baboi, N Jones, R M A Study of Beam Alignment Based on Coupling Modes in Third Harmonic Superconducting Cavities at FLASH Accelerators and Storage Rings 10: SC RF technology for higher intensity proton accelerators and higher energy electron linacs This paper presents a study of beam alignment in accelerating cavities based on beam-excited higher order modes (HOM). Among the transverse HOMs, dipole modes have the dominant contribution, and may have an adverse effect on the beam quality. Since they depend linearly on the transverse beam offset, their effect can be reduced by aligning the beam in the cavity. The study has been made on the four third harmonic superconducting cavities installed in the ACC39 module at FLASH. Modes with strong beam coupling were monitored while moving the beam and searching for the minimum excited HOM power. info:eu-repo/grantAgreement/EC/FP7/227579 info:eu-repo/semantics/openAccess Education Level info:eu-repo/semantics/article http://cds.cern.ch/record/1408717 2011
spellingShingle Accelerators and Storage Rings
10: SC RF technology for higher intensity proton accelerators and higher energy electron linacs
Zhang, P
Baboi, N
Jones, R M
A Study of Beam Alignment Based on Coupling Modes in Third Harmonic Superconducting Cavities at FLASH
title A Study of Beam Alignment Based on Coupling Modes in Third Harmonic Superconducting Cavities at FLASH
title_full A Study of Beam Alignment Based on Coupling Modes in Third Harmonic Superconducting Cavities at FLASH
title_fullStr A Study of Beam Alignment Based on Coupling Modes in Third Harmonic Superconducting Cavities at FLASH
title_full_unstemmed A Study of Beam Alignment Based on Coupling Modes in Third Harmonic Superconducting Cavities at FLASH
title_short A Study of Beam Alignment Based on Coupling Modes in Third Harmonic Superconducting Cavities at FLASH
title_sort study of beam alignment based on coupling modes in third harmonic superconducting cavities at 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/1408717
http://cds.cern.ch/record/1408717
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AT baboin astudyofbeamalignmentbasedoncouplingmodesinthirdharmonicsuperconductingcavitiesatflash
AT jonesrm astudyofbeamalignmentbasedoncouplingmodesinthirdharmonicsuperconductingcavitiesatflash
AT zhangp studyofbeamalignmentbasedoncouplingmodesinthirdharmonicsuperconductingcavitiesatflash
AT baboin studyofbeamalignmentbasedoncouplingmodesinthirdharmonicsuperconductingcavitiesatflash
AT jonesrm studyofbeamalignmentbasedoncouplingmodesinthirdharmonicsuperconductingcavitiesatflash

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