High-order dispersion suppression for FFAG-based optics

R. Fenning, S. MacHida, D. Kelliher, A. Khan, R. Edgecock

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The resurgence of interest in FFAG type magnets has motivated the desire for high-order dispersion suppression to aid the development of dispersion-free straight sections to currently circular designs. In scaling FFAGs, dispersion suppression can only be achieved over a limited momentum range and breaks down as high-order chromatic aberration terms become significant. However by breaking the scaling law and varying the individual multipole components, these can be compensated for and a design for high-order dispersion suppression achieved. This paper presents a process for doing so and discusses the impact on beta functions, as well as the effect of magnet positioning errors.

LanguageEnglish
Article numberP05011
JournalJournal of Instrumentation
Volume7
Issue number5
DOIs
Publication statusPublished - 23 May 2012
Externally publishedYes

Fingerprint

Optics
retarding
optics
Higher Order
Magnets
magnets
Beta function
Scaling laws
Scaling Laws
Aberrations
Aberration
scaling laws
Straight
multipoles
positioning
Positioning
Breakdown
aberration
Momentum
breakdown

Cite this

Fenning, R. ; MacHida, S. ; Kelliher, D. ; Khan, A. ; Edgecock, R. / High-order dispersion suppression for FFAG-based optics. In: Journal of Instrumentation. 2012 ; Vol. 7, No. 5.
@article{74ff027285fc45ad8fa6e0f708b929f6,
title = "High-order dispersion suppression for FFAG-based optics",
abstract = "The resurgence of interest in FFAG type magnets has motivated the desire for high-order dispersion suppression to aid the development of dispersion-free straight sections to currently circular designs. In scaling FFAGs, dispersion suppression can only be achieved over a limited momentum range and breaks down as high-order chromatic aberration terms become significant. However by breaking the scaling law and varying the individual multipole components, these can be compensated for and a design for high-order dispersion suppression achieved. This paper presents a process for doing so and discusses the impact on beta functions, as well as the effect of magnet positioning errors.",
keywords = "Accelerator modelling and simulations (multi-particle dynamics; single-particle dynamics), Accelerator Subsystems and Technologies, Beam dynamics, Beam Optics",
author = "R. Fenning and S. MacHida and D. Kelliher and A. Khan and R. Edgecock",
year = "2012",
month = "5",
day = "23",
doi = "10.1088/1748-0221/7/05/P05011",
language = "English",
volume = "7",
journal = "Journal of Instrumentation",
issn = "1748-0221",
publisher = "IOP Publishing Ltd.",
number = "5",

}

High-order dispersion suppression for FFAG-based optics. / Fenning, R.; MacHida, S.; Kelliher, D.; Khan, A.; Edgecock, R.

In: Journal of Instrumentation, Vol. 7, No. 5, P05011, 23.05.2012.

Research output: Contribution to journalArticle

TY - JOUR

T1 - High-order dispersion suppression for FFAG-based optics

AU - Fenning, R.

AU - MacHida, S.

AU - Kelliher, D.

AU - Khan, A.

AU - Edgecock, R.

PY - 2012/5/23

Y1 - 2012/5/23

N2 - The resurgence of interest in FFAG type magnets has motivated the desire for high-order dispersion suppression to aid the development of dispersion-free straight sections to currently circular designs. In scaling FFAGs, dispersion suppression can only be achieved over a limited momentum range and breaks down as high-order chromatic aberration terms become significant. However by breaking the scaling law and varying the individual multipole components, these can be compensated for and a design for high-order dispersion suppression achieved. This paper presents a process for doing so and discusses the impact on beta functions, as well as the effect of magnet positioning errors.

AB - The resurgence of interest in FFAG type magnets has motivated the desire for high-order dispersion suppression to aid the development of dispersion-free straight sections to currently circular designs. In scaling FFAGs, dispersion suppression can only be achieved over a limited momentum range and breaks down as high-order chromatic aberration terms become significant. However by breaking the scaling law and varying the individual multipole components, these can be compensated for and a design for high-order dispersion suppression achieved. This paper presents a process for doing so and discusses the impact on beta functions, as well as the effect of magnet positioning errors.

KW - Accelerator modelling and simulations (multi-particle dynamics; single-particle dynamics)

KW - Accelerator Subsystems and Technologies

KW - Beam dynamics

KW - Beam Optics

UR - http://www.scopus.com/inward/record.url?scp=84861891341&partnerID=8YFLogxK

U2 - 10.1088/1748-0221/7/05/P05011

DO - 10.1088/1748-0221/7/05/P05011

M3 - Article

VL - 7

JO - Journal of Instrumentation

T2 - Journal of Instrumentation

JF - Journal of Instrumentation

SN - 1748-0221

IS - 5

M1 - P05011

ER -