CLIC crab cavity design optimisation for maximum luminosity

A. C. Dexter; G. Burt; P. K. Ambattu; V. Dolgashev; R. Jones

doi:10.1016/j.nima.2011.05.057

CLIC crab cavity design optimisation for maximum luminosity

A. C. Dexter, G. Burt, P. K. Ambattu, V. Dolgashev, R. Jones

Research output: Contribution to journal › Article › peer-review

Abstract

The bunch size and crossing angle planned for CERNs compact linear collider CLIC dictate that crab cavities on opposing linacs will be needed to rotate bunches of particles into alignment at the interaction point if the desired luminosity is to be achieved. Wakefield effects, RF phase errors between crab cavities on opposing linacs and unpredictable beam loading can each act to reduce luminosity below that anticipated for bunches colliding in perfect alignment. Unlike acceleration cavities, which are normally optimised for gradient, crab cavities must be optimised primarily for luminosity. Accepting the crab cavity technology choice of a 12 GHz, normal conducting, travelling wave structure as explained in the text, this paper develops an analytical approach to optimise cell number and iris diameter. © 2011 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	45-51
Number of pages	6
Journal	Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
Volume	657
Issue number	1
DOIs	https://doi.org/10.1016/j.nima.2011.05.057
Publication status	Published - 21 Nov 2011

Keywords

CLIC
Crab cavity
Luminosity
X-band

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10.1016/j.nima.2011.05.057

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title = "CLIC crab cavity design optimisation for maximum luminosity",

abstract = "The bunch size and crossing angle planned for CERNs compact linear collider CLIC dictate that crab cavities on opposing linacs will be needed to rotate bunches of particles into alignment at the interaction point if the desired luminosity is to be achieved. Wakefield effects, RF phase errors between crab cavities on opposing linacs and unpredictable beam loading can each act to reduce luminosity below that anticipated for bunches colliding in perfect alignment. Unlike acceleration cavities, which are normally optimised for gradient, crab cavities must be optimised primarily for luminosity. Accepting the crab cavity technology choice of a 12 GHz, normal conducting, travelling wave structure as explained in the text, this paper develops an analytical approach to optimise cell number and iris diameter. {\textcopyright} 2011 Elsevier B.V. All rights reserved.",

keywords = "CLIC, Crab cavity, Luminosity, X-band",

author = "Dexter, {A. C.} and G. Burt and Ambattu, {P. K.} and V. Dolgashev and R. Jones",

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T1 - CLIC crab cavity design optimisation for maximum luminosity

AU - Dexter, A. C.

AU - Burt, G.

AU - Ambattu, P. K.

AU - Dolgashev, V.

AU - Jones, R.

PY - 2011/11/21

Y1 - 2011/11/21

N2 - The bunch size and crossing angle planned for CERNs compact linear collider CLIC dictate that crab cavities on opposing linacs will be needed to rotate bunches of particles into alignment at the interaction point if the desired luminosity is to be achieved. Wakefield effects, RF phase errors between crab cavities on opposing linacs and unpredictable beam loading can each act to reduce luminosity below that anticipated for bunches colliding in perfect alignment. Unlike acceleration cavities, which are normally optimised for gradient, crab cavities must be optimised primarily for luminosity. Accepting the crab cavity technology choice of a 12 GHz, normal conducting, travelling wave structure as explained in the text, this paper develops an analytical approach to optimise cell number and iris diameter. © 2011 Elsevier B.V. All rights reserved.

AB - The bunch size and crossing angle planned for CERNs compact linear collider CLIC dictate that crab cavities on opposing linacs will be needed to rotate bunches of particles into alignment at the interaction point if the desired luminosity is to be achieved. Wakefield effects, RF phase errors between crab cavities on opposing linacs and unpredictable beam loading can each act to reduce luminosity below that anticipated for bunches colliding in perfect alignment. Unlike acceleration cavities, which are normally optimised for gradient, crab cavities must be optimised primarily for luminosity. Accepting the crab cavity technology choice of a 12 GHz, normal conducting, travelling wave structure as explained in the text, this paper develops an analytical approach to optimise cell number and iris diameter. © 2011 Elsevier B.V. All rights reserved.

KW - CLIC

KW - Crab cavity

KW - Luminosity

KW - X-band

U2 - 10.1016/j.nima.2011.05.057

DO - 10.1016/j.nima.2011.05.057

M3 - Article

SN - 0168-9002

VL - 657

SP - 45

EP - 51

JO - Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment

JF - Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment

IS - 1

ER -

CLIC crab cavity design optimisation for maximum luminosity

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