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Development of an Eddy Current Septum for LINAC4

A linear accelerator (linac) is the first stage of the CERN accelerator complex. The linac defines the beam quality for subsequent stages of acceleration and the reliability has to be high as a fault of the linac shuts down all other machines. The existing linacs at CERN were designed 30 or more yea...

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Autores principales: Barnes, M, Balhan, B, Borburgh, J, Fowler, T, Goddard, B, Ueda, A, Weterings, W
Lenguaje:eng
Publicado: 2008
Materias:
Acceso en línea:http://cds.cern.ch/record/1124314
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author Barnes, M
Balhan, B
Borburgh, J
Fowler, T
Goddard, B
Ueda, A
Weterings, W
author_facet Barnes, M
Balhan, B
Borburgh, J
Fowler, T
Goddard, B
Ueda, A
Weterings, W
author_sort Barnes, M
collection CERN
description A linear accelerator (linac) is the first stage of the CERN accelerator complex. The linac defines the beam quality for subsequent stages of acceleration and the reliability has to be high as a fault of the linac shuts down all other machines. The existing linacs at CERN were designed 30 or more years ago: recent upgrades allowed the linacs to reach LHC requirements but also showed that they are at the limit of their brightness and intensity capabilities. A replacement Superconducting Proton Linac (SPL) has been proposed; the initial part of the SPL is termed LINAC4. The LINAC4 injection bump would be made up of a set of four pulsed dipole magnets; the first of these magnets (BS1) must act as a septum with a thin element dividing the high-field region of the circulating beam from the field-free region through which injected $H^{-}$ beam must pass. The initial specifications for BS1 required; a deflection of 66 mrad at 160 MeV, achieved with a peak field of 628 mT and a length of 250 mm: the field fall time was $40 \mu$s with a flattop of at least $100 \mu$s. The ripple of the flattop should be below ±1%. This paper discusses the design of an eddy current septum for BS1.
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institution Organización Europea para la Investigación Nuclear
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publishDate 2008
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spelling cern-11243142022-08-17T13:37:19Zhttp://cds.cern.ch/record/1124314engBarnes, MBalhan, BBorburgh, JFowler, TGoddard, BUeda, AWeterings, WDevelopment of an Eddy Current Septum for LINAC4Accelerators and Storage RingsA linear accelerator (linac) is the first stage of the CERN accelerator complex. The linac defines the beam quality for subsequent stages of acceleration and the reliability has to be high as a fault of the linac shuts down all other machines. The existing linacs at CERN were designed 30 or more years ago: recent upgrades allowed the linacs to reach LHC requirements but also showed that they are at the limit of their brightness and intensity capabilities. A replacement Superconducting Proton Linac (SPL) has been proposed; the initial part of the SPL is termed LINAC4. The LINAC4 injection bump would be made up of a set of four pulsed dipole magnets; the first of these magnets (BS1) must act as a septum with a thin element dividing the high-field region of the circulating beam from the field-free region through which injected $H^{-}$ beam must pass. The initial specifications for BS1 required; a deflection of 66 mrad at 160 MeV, achieved with a peak field of 628 mT and a length of 250 mm: the field fall time was $40 \mu$s with a flattop of at least $100 \mu$s. The ripple of the flattop should be below ±1%. This paper discusses the design of an eddy current septum for BS1.CERN-AB-2008-056oai:cds.cern.ch:11243142008-09-05
spellingShingle Accelerators and Storage Rings
Barnes, M
Balhan, B
Borburgh, J
Fowler, T
Goddard, B
Ueda, A
Weterings, W
Development of an Eddy Current Septum for LINAC4
title Development of an Eddy Current Septum for LINAC4
title_full Development of an Eddy Current Septum for LINAC4
title_fullStr Development of an Eddy Current Septum for LINAC4
title_full_unstemmed Development of an Eddy Current Septum for LINAC4
title_short Development of an Eddy Current Septum for LINAC4
title_sort development of an eddy current septum for linac4
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/1124314
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