Measurements and simulations of wakefields at the Accelerator Test Facility 2

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Title
Measurements and simulations of wakefields at the Accelerator Test Facility 2
Author(s)
J. Snuverink; R. Ainsworth; S. T. Boogert; F. J. Cullinan; A. Lyapin; Young Im Kim; K. Kubo; S. Kuroda; T. Okugi; T. Tauchi; N. Terunuma; J. Urakawa; G. R. White
Publication Date
2016-09
Journal
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS, v.19, no.9, pp.091002 -
Publisher
AMER PHYSICAL SOC
Abstract
Wakefields are an important factor in accelerator design, and are a real concern when preserving the low beam emittance in modern machines. Charge dependent beam size growth has been observed at the Accelerator Test Facility (ATF2), a test accelerator for future linear collider beam delivery systems. Part of the explanation of this beam size growth is wakefields. In this paper we present numerical calculations of the wakefields produced by several types of geometrical discontinuities in the beam line as well as tracking simulations to estimate the induced effects. We also discuss precision beam kick measurements performed with the ATF2 cavity beam position monitor system for a test wakefield source in a movable section of the vacuum chamber. Using an improved model independent method we measured a wakefield kick for this movable section of about 0.49  V/pC/mm , which, compared to the calculated value from electromagnetic simulations of 0.41  V/pC/mm , is within the systematic error.
URI
https://pr.ibs.re.kr/handle/8788114/3574
ISSN
2469-9888
Appears in Collections:
Center for Axion and Precision Physics Research(액시온 및 극한상호작용 연구단) > Journal Papers (저널논문)
Files in This Item:
1. [김영임 PDF] Measurements and simulations of wakefields at the Accelerator Test Facility 2 (IBS 소속표기).pdfDownload

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