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Filling Pattern Dependence of Regenerative Beam Breakup Instability in Energy Recovery Linacs

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Filling Pattern Dependence of Regenerative Beam Breakup Instability in Energy Recovery Linacs. / Saitiniyazi, Shadike; Apsimon, Robert; Williams, Peter.
In: Physical Review Accelerators and Beams, Vol. 24, No. 6, 061003, 23.06.2021, p. 1-10.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Saitiniyazi, S, Apsimon, R & Williams, P 2021, 'Filling Pattern Dependence of Regenerative Beam Breakup Instability in Energy Recovery Linacs', Physical Review Accelerators and Beams, vol. 24, no. 6, 061003, pp. 1-10. https://doi.org/10.1103/PhysRevAccelBeams.24.061003

APA

Saitiniyazi, S., Apsimon, R., & Williams, P. (2021). Filling Pattern Dependence of Regenerative Beam Breakup Instability in Energy Recovery Linacs. Physical Review Accelerators and Beams, 24(6), 1-10. Article 061003. https://doi.org/10.1103/PhysRevAccelBeams.24.061003

Vancouver

Saitiniyazi S, Apsimon R, Williams P. Filling Pattern Dependence of Regenerative Beam Breakup Instability in Energy Recovery Linacs. Physical Review Accelerators and Beams. 2021 Jun 23;24(6):1-10. 061003. doi: 10.1103/PhysRevAccelBeams.24.061003

Author

Saitiniyazi, Shadike ; Apsimon, Robert ; Williams, Peter. / Filling Pattern Dependence of Regenerative Beam Breakup Instability in Energy Recovery Linacs. In: Physical Review Accelerators and Beams. 2021 ; Vol. 24, No. 6. pp. 1-10.

Bibtex

@article{f468efe4794a47fdaf05a1e10a19acf8,
title = "Filling Pattern Dependence of Regenerative Beam Breakup Instability in Energy Recovery Linacs",
abstract = "Beam breakup instability is a potential issue for all particle accelerators and is often the limiting factor for the maximum beam current that can be achieved. This is particularly relevant for Energy Recovery Linacs with multiple passes where a relatively small amount of charge can result in a large beam current. Recent studies have shown that the choice of filling pattern and recirculation scheme for a multi-pass energy recovery linac can drastically affect the interactions between the beam and RF system. In this paper, we further explore this topic to study how filling patterns affect the beam breakup instability and how this can allow us to optimise the design in order to minimise this effect. We present a theoretical model of the beam-RF interaction as well as numerical modeling and show that the threshold current can vary by factors of 5, and potentially, even more, depending on the machine design parameters. Therefore a judicious choice of filling pattern can greatly increase the onset of BBU, expanding the utility of future ERLs.",
keywords = "Energy Recovery Linac, ERL, Beam breakup instability, BBU, Filling pattern, Electron Accelerator",
author = "Shadike Saitiniyazi and Robert Apsimon and Peter Williams",
year = "2021",
month = jun,
day = "23",
doi = "10.1103/PhysRevAccelBeams.24.061003",
language = "English",
volume = "24",
pages = "1--10",
journal = "Physical Review Accelerators and Beams",
issn = "2469-9888",
publisher = "American Physical Society",
number = "6",

}

RIS

TY - JOUR

T1 - Filling Pattern Dependence of Regenerative Beam Breakup Instability in Energy Recovery Linacs

AU - Saitiniyazi, Shadike

AU - Apsimon, Robert

AU - Williams, Peter

PY - 2021/6/23

Y1 - 2021/6/23

N2 - Beam breakup instability is a potential issue for all particle accelerators and is often the limiting factor for the maximum beam current that can be achieved. This is particularly relevant for Energy Recovery Linacs with multiple passes where a relatively small amount of charge can result in a large beam current. Recent studies have shown that the choice of filling pattern and recirculation scheme for a multi-pass energy recovery linac can drastically affect the interactions between the beam and RF system. In this paper, we further explore this topic to study how filling patterns affect the beam breakup instability and how this can allow us to optimise the design in order to minimise this effect. We present a theoretical model of the beam-RF interaction as well as numerical modeling and show that the threshold current can vary by factors of 5, and potentially, even more, depending on the machine design parameters. Therefore a judicious choice of filling pattern can greatly increase the onset of BBU, expanding the utility of future ERLs.

AB - Beam breakup instability is a potential issue for all particle accelerators and is often the limiting factor for the maximum beam current that can be achieved. This is particularly relevant for Energy Recovery Linacs with multiple passes where a relatively small amount of charge can result in a large beam current. Recent studies have shown that the choice of filling pattern and recirculation scheme for a multi-pass energy recovery linac can drastically affect the interactions between the beam and RF system. In this paper, we further explore this topic to study how filling patterns affect the beam breakup instability and how this can allow us to optimise the design in order to minimise this effect. We present a theoretical model of the beam-RF interaction as well as numerical modeling and show that the threshold current can vary by factors of 5, and potentially, even more, depending on the machine design parameters. Therefore a judicious choice of filling pattern can greatly increase the onset of BBU, expanding the utility of future ERLs.

KW - Energy Recovery Linac

KW - ERL

KW - Beam breakup instability

KW - BBU

KW - Filling pattern

KW - Electron Accelerator

U2 - 10.1103/PhysRevAccelBeams.24.061003

DO - 10.1103/PhysRevAccelBeams.24.061003

M3 - Journal article

VL - 24

SP - 1

EP - 10

JO - Physical Review Accelerators and Beams

JF - Physical Review Accelerators and Beams

SN - 2469-9888

IS - 6

M1 - 061003

ER -