Multi-stream instability of a single long electron bunch in a storage ring

Beaudoin, B. L.; Haber, I.; Kishek, R. A.; Koeth, T. W.; Antonsen, T. M.

doi:10.1063/1.5095581

Title: Multi-stream instability of a single long electron bunch in a storage ring

Abstract

A multistream instability is observed experimentally during the longitudinal expansion of an electron beam in a storage ring. The instability is observed when the beam expands in length to several times the circumference of the ring so that portions of the beam overlap. While portions of the beam overlap in physical space, they form multiple streams and remain separate in velocity space. The streams become unstable as their number increases and their separation in velocity decreases. An analytical theory predicts the onset of the instability, in agreement with simulations and measurements, over a wide range of peak line-charge densities (10.3 pC/m–1.8 nC/m) and bunch lengths. Finally, this work extends previous calculations to include the dynamic nonlinear elongation of the bunch, with a given initial length, and defines an onset criterion for the filament velocity separation for the beam to be unstable.

Authors:

Beaudoin, B. L. ^[1];

^[1];

^[1]; Koeth, T. W. ^[1]; Antonsen, T. M. ^[1]

Univ. of Maryland, College Park, MD (United States)

Publication Date:: Thu May 09 00:00:00 EDT 2019

Research Org.:: Univ. of Maryland, College Park, MD (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP)

OSTI Identifier:: 1611383

Alternate Identifier(s):: OSTI ID: 1511767

Grant/Contract Number:: SC0010301

Resource Type:: Accepted Manuscript

Journal Name:: Physics of Plasmas

Additional Journal Information:: Journal Volume: 26; Journal Issue: 5; Journal ID: ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; physics

Citation Formats


                    Beaudoin, B. L., Haber, I., Kishek, R. A., Koeth, T. W., and Antonsen, T. M. Multi-stream instability of a single long electron bunch in a storage ring.  United States: N. p., 2019. 
Web.  doi:10.1063/1.5095581.

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                    Beaudoin, B. L., Haber, I., Kishek, R. A., Koeth, T. W., & Antonsen, T. M. Multi-stream instability of a single long electron bunch in a storage ring.  United States.  https://doi.org/10.1063/1.5095581

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                    Beaudoin, B. L., Haber, I., Kishek, R. A., Koeth, T. W., and Antonsen, T. M. Thu .  
"Multi-stream instability of a single long electron bunch in a storage ring".  United States.  https://doi.org/10.1063/1.5095581.  https://www.osti.gov/servlets/purl/1611383.

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@article{osti_1611383,

  title        = {Multi-stream instability of a single long electron bunch in a storage ring},

  author       = {Beaudoin, B. L. and Haber, I. and Kishek, R. A. and Koeth, T. W. and Antonsen, T. M.},

  abstractNote = {A multistream instability is observed experimentally during the longitudinal expansion of an electron beam in a storage ring. The instability is observed when the beam expands in length to several times the circumference of the ring so that portions of the beam overlap. While portions of the beam overlap in physical space, they form multiple streams and remain separate in velocity space. The streams become unstable as their number increases and their separation in velocity decreases. An analytical theory predicts the onset of the instability, in agreement with simulations and measurements, over a wide range of peak line-charge densities (10.3 pC/m–1.8 nC/m) and bunch lengths. Finally, this work extends previous calculations to include the dynamic nonlinear elongation of the bunch, with a given initial length, and defines an onset criterion for the filament velocity separation for the beam to be unstable.},

  doi          = {10.1063/1.5095581},

  journal      = {Physics of Plasmas},

  number       = 5,

  volume       = 26,

  place        = {United States},

  year         = {Thu May 09 00:00:00 EDT 2019},

  month        = {Thu May 09 00:00:00 EDT 2019}

}

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Works referenced in this record:

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Grote, David P.; Friedman, Alex; Haber, Irving
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Beaudoin, B.; Haber, I.; Kishek, R. A.
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Similar Records

Title: Multi-stream instability of a single long electron bunch in a storage ring

Abstract

Citation Formats

Three-dimensional simulations of high current beams in induction accelerators with WARP3d journal, November 1996

The superfluid two-stream instability journal, October 2004

Measurement & Simulation of Interpenetration and DC Accumulation of Beam in the University of Maryland Electron Ring conference, January 2010

Theory and Design of Charged Particle Beams book, January 1994

Are Pulsar Glitches Triggered by a Superfluid Two-Stream Instability? journal, March 2003

Theory and Design of Charged Particle Beams journal, June 1995

Microbunch dynamics and multistream instability in a heavy-ion synchrotron journal, May 2012

Restoration of Rectangular Pulse Shape after Edge Erosion for a Space-Charge Dominated Electron Bunch journal, July 1994

Longitudinal confinement and matching of an intense electron beam journal, January 2011

Beam end erosion journal, June 1987

On scaling & optimization of high-intensity, low-beam-loss RF linacs for neutron source drivers conference, January 1992

Are pulsar glitches triggered by a superfluid two-stream instability? text, January 2002

Three-dimensional simulations of high current beams in induction accelerators with WARP3d
journal, November 1996

The superfluid two-stream instability
journal, October 2004

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conference, January 2010

Theory and Design of Charged Particle Beams
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journal, March 2003

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journal, June 1995

Microbunch dynamics and multistream instability in a heavy-ion synchrotron
journal, May 2012

Restoration of Rectangular Pulse Shape after Edge Erosion for a Space-Charge Dominated Electron Bunch
journal, July 1994

Longitudinal confinement and matching of an intense electron beam
journal, January 2011

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journal, June 1987

On scaling & optimization of high-intensity, low-beam-loss RF linacs for neutron source drivers
conference, January 1992

Are pulsar glitches triggered by a superfluid two-stream instability?
text, January 2002