New aspects of longitudinal instabilities in electron storage rings

Blednykh, Alexei; Bacha, B.; Bassi, G.; Cheng, W.; Chubar, O.; Derbenev, A.; Lindberg, R.; Rakitin, M.; Smaluk, V.; Zhernenkov, M.; Chen-Wiegart, Yu-chen Karen; Wiegart, L.

doi:10.1038/s41598-018-30306-y

Title: New aspects of longitudinal instabilities in electron storage rings

Abstract

Here, novel features of the longitudinal instability of a single electron bunch circulating in a low-emittance electron storage ring are discussed. Measurements and numerical simulations, performed both in time and frequency domain, show a non-monotonic increase of the electron beam energy spread as a function of single bunch current, characterized by the presence of local minima and maxima, where a local minimum of the energy spread is interpreted as a higher-order microwave instability threshold. It is also shown that thresholds related to the same zero-intensity bunch length depend linearly on the accelerating radio frequency voltage. The observed intensity-dependent features of the energy spread, confirmed by measurements with two independent diagnostics methods, i.e. horizontal beam profile measurements by a synchrotron light monitor and photon energy spectrum measurements of undulator radiation, are given a theoretical interpretation by applying a novel eigenvalue analysis based on the linearized Vlasov equation.

Authors:

Blednykh, Alexei ^[1]; Bacha, B. ^[1]; Bassi, G. ^[1]; Cheng, W. ^[1]; Chubar, O. ^[1]; Derbenev, A. ^[1]; Lindberg, R. ^[2]; Rakitin, M. ^[1]; Smaluk, V. ^[1];

^[1]; Chen-Wiegart, Yu-chen Karen ^[3]; Wiegart, L. ^[1]

Brookhaven National Lab. (BNL), Upton, NY (United States)
Argonne National Lab. (ANL), Argonne, IL (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., Stony Brook, NY (United States)

Publication Date:: Thu Aug 09 00:00:00 EDT 2018

Research Org.:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1477959

Report Number(s):: BNL-209191-2018-JAAM
Journal ID: ISSN 2045-2322

Grant/Contract Number:: SC0012704

Resource Type:: Accepted Manuscript

Journal Name:: Scientific Reports

Additional Journal Information:: Journal Volume: 8; Journal Issue: 1; Journal ID: ISSN 2045-2322

Publisher:: Nature Publishing Group

Country of Publication:: United States

Language:: English

Subject:: 43 PARTICLE ACCELERATORS

Citation Formats


                    Blednykh, Alexei, Bacha, B., Bassi, G., Cheng, W., Chubar, O., Derbenev, A., Lindberg, R., Rakitin, M., Smaluk, V., Zhernenkov, M., Chen-Wiegart, Yu-chen Karen, and Wiegart, L. New aspects of longitudinal instabilities in electron storage rings.  United States: N. p., 2018. 
Web.  doi:10.1038/s41598-018-30306-y.

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                    Blednykh, Alexei, Bacha, B., Bassi, G., Cheng, W., Chubar, O., Derbenev, A., Lindberg, R., Rakitin, M., Smaluk, V., Zhernenkov, M., Chen-Wiegart, Yu-chen Karen, & Wiegart, L. New aspects of longitudinal instabilities in electron storage rings.  United States.  https://doi.org/10.1038/s41598-018-30306-y

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                    Blednykh, Alexei, Bacha, B., Bassi, G., Cheng, W., Chubar, O., Derbenev, A., Lindberg, R., Rakitin, M., Smaluk, V., Zhernenkov, M., Chen-Wiegart, Yu-chen Karen, and Wiegart, L. Thu .  
"New aspects of longitudinal instabilities in electron storage rings".  United States.  https://doi.org/10.1038/s41598-018-30306-y.  https://www.osti.gov/servlets/purl/1477959.

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@article{osti_1477959,

  title        = {New aspects of longitudinal instabilities in electron storage rings},

  author       = {Blednykh, Alexei and Bacha, B. and Bassi, G. and Cheng, W. and Chubar, O. and Derbenev, A. and Lindberg, R. and Rakitin, M. and Smaluk, V. and Zhernenkov, M. and Chen-Wiegart, Yu-chen Karen and Wiegart, L.},

  abstractNote = {Here, novel features of the longitudinal instability of a single electron bunch circulating in a low-emittance electron storage ring are discussed. Measurements and numerical simulations, performed both in time and frequency domain, show a non-monotonic increase of the electron beam energy spread as a function of single bunch current, characterized by the presence of local minima and maxima, where a local minimum of the energy spread is interpreted as a higher-order microwave instability threshold. It is also shown that thresholds related to the same zero-intensity bunch length depend linearly on the accelerating radio frequency voltage. The observed intensity-dependent features of the energy spread, confirmed by measurements with two independent diagnostics methods, i.e. horizontal beam profile measurements by a synchrotron light monitor and photon energy spectrum measurements of undulator radiation, are given a theoretical interpretation by applying a novel eigenvalue analysis based on the linearized Vlasov equation.},

  doi          = {10.1038/s41598-018-30306-y},

  journal      = {Scientific Reports},

  number       = 1,

  volume       = 8,

  place        = {United States},

  year         = {Thu Aug 09 00:00:00 EDT 2018},

  month        = {Thu Aug 09 00:00:00 EDT 2018}

}

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Works referenced in this record:

Study of bunch instabilities by the nonlinear Vlasov–Fokker–Planck equation
journal, June 2006

Warnock, Robert L.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 561, Issue 2
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Linear theory of microwave instability in electron storage rings
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Cai, Yunhai
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DOI: 10.1103/PhysRevSTAB.14.061002

Self-consistent simulations and analysis of the coupled-bunch instability for arbitrary multibunch configurations
journal, February 2016

Bassi, Gabriele; Blednykh, Alexei; Smaluk, Victor
Physical Review Accelerators and Beams, Vol. 19, Issue 2
DOI: 10.1103/PhysRevAccelBeams.19.024401

Emittance and lifetime measurement with damping wigglers
journal, March 2016

Wang, G. M.; Shaftan, T.; Cheng, W. X.
Review of Scientific Instruments, Vol. 87, Issue 3
DOI: 10.1063/1.4942903

Spectrum-Based Alignment of In-Vacuum Undulators in a Low-Emittance Storage Ring
journal, May 2018

Chubar, O.; Kitegi, C.; Chen-Wiegart, Y. -C. K.
Synchrotron Radiation News, Vol. 31, Issue 3
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Collective instabilities in high energy accelerators
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Chao, Alex
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A General Method for Propagation of the Phase Space Distribution, with Application to the Saw-Tooth Instability
conference, November 2011

Warnock, Robert L.; Ellison, James A.
Proceedings of the 2nd ICFA Advanced Accelerator Workshop, The Physics of High Brightness Beams
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Sacherer, F. J.
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Longitudinal Resistive Instabilities of Intense Coasting Beams in Particle Accelerators
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journal, June 1993

Ieiri, Takao
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DOI: 10.1016/0168-9002(93)91272-O

Longitudinal Resistive Instabilities of Intense Coasting Beams in Particle Accelerators
journal, April 1965

Neil, V. Kelvin; Sessler, Andrew M.
Review of Scientific Instruments, Vol. 36, Issue 4
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The Fokker-Planck equation [Уравнение Фоккера-Планка]
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A Longitudinal Stability Criterion for Bunched Beams
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Sacherer, F. J.
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Measurement of the longitudinal microwave instability in the APS storage ring
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Soft matter interfaces beamline at NSLS-II: geometrical ray-tracing vs. wavefront propagation simulations
conference, September 2014

Zhernenkov, Mikhail; Canestrari, Niccolo; Chubar, Oleg
SPIE Optical Engineering + Applications, SPIE Proceedings
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Similar Records

Title: New aspects of longitudinal instabilities in electron storage rings

Abstract

Citation Formats

Study of bunch instabilities by the nonlinear Vlasov–Fokker–Planck equation journal, June 2006

Linear theory of microwave instability in electron storage rings journal, June 2011

Self-consistent simulations and analysis of the coupled-bunch instability for arbitrary multibunch configurations journal, February 2016

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Spectrum-Based Alignment of In-Vacuum Undulators in a Low-Emittance Storage Ring journal, May 2018

Collective instabilities in high energy accelerators conference, January 1994

A General Method for Propagation of the Phase Space Distribution, with Application to the Saw-Tooth Instability conference, November 2011

Bunch Lengthening and Microwave Instability journal, June 1977

Longitudinal Resistive Instabilities of Intense Coasting Beams in Particle Accelerators journal, April 1965

The Fokker-Planck Equation book, January 1996

A real time bunch-length monitor using the beam spectrum and measurements of bunch lengthening journal, June 1993

Longitudinal Resistive Instabilities of Intense Coasting Beams in Particle Accelerators journal, April 1965

The Fokker-Planck equation [Уравнение Фоккера-Планка] journal, January 1998

A Longitudinal Stability Criterion for Bunched Beams journal, January 1973

Measurement of the longitudinal microwave instability in the APS storage ring conference, January 2001

Soft matter interfaces beamline at NSLS-II: geometrical ray-tracing vs. wavefront propagation simulations conference, September 2014

Study of bunch instabilities by the nonlinear Vlasov–Fokker–Planck equation
journal, June 2006

Linear theory of microwave instability in electron storage rings
journal, June 2011

Self-consistent simulations and analysis of the coupled-bunch instability for arbitrary multibunch configurations
journal, February 2016

Emittance and lifetime measurement with damping wigglers
journal, March 2016

Spectrum-Based Alignment of In-Vacuum Undulators in a Low-Emittance Storage Ring
journal, May 2018

Collective instabilities in high energy accelerators
conference, January 1994

A General Method for Propagation of the Phase Space Distribution, with Application to the Saw-Tooth Instability
conference, November 2011

Bunch Lengthening and Microwave Instability
journal, June 1977

Longitudinal Resistive Instabilities of Intense Coasting Beams in Particle Accelerators
journal, April 1965

The Fokker-Planck Equation
book, January 1996

A real time bunch-length monitor using the beam spectrum and measurements of bunch lengthening
journal, June 1993

Longitudinal Resistive Instabilities of Intense Coasting Beams in Particle Accelerators
journal, April 1965

The Fokker-Planck equation [Уравнение Фоккера-Планка]
journal, January 1998

A Longitudinal Stability Criterion for Bunched Beams
journal, January 1973

Measurement of the longitudinal microwave instability in the APS storage ring
conference, January 2001

Soft matter interfaces beamline at NSLS-II: geometrical ray-tracing vs. wavefront propagation simulations
conference, September 2014