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Title: Single Shot Characterization of High Transformer Ratio Wakefields in Nonlinear Plasma Acceleration

Abstract

We report that plasma wakefields can enable very high accelerating gradients for frontier high energy particle accelerators, in excess of 10 GeV/m. To overcome limits on single stage acceleration, specially shaped drive beams can be used in both linear and nonlinear plasma wakefield accelerators (PWFA), to increase the transformer ratio, implying that the drive beam deceleration is minimized relative to acceleration obtained in the wake. In this Letter, we report the results of a nonlinear PWFA, high transformer ratio experiment using high-charge, longitudinally asymmetric drive beams in a plasma cell. An emittance exchange process is used to generate variable drive current profiles, in conjunction with a long (multiple plasma wavelength) witness beam. The witness beam is energy modulated by the wakefield, yielding a response that contains detailed spectral information in a single-shot measurement. Using these methods, we generate a variety of beam profiles and characterize the wakefields, directly observing transformer ratios up to R=7.8. Lastly, a spectrally based reconstruction technique, validated by 3D particle-in-cell simulations, is introduced to obtain the drive beam current profile from the decelerating wake data.

Authors:
ORCiD logo [1];  [1];  [1]; ORCiD logo [1];  [1]; ORCiD logo [1];  [1];  [1];  [1]; ORCiD logo [2];  [2];  [2];  [2]; ORCiD logo [2];  [2];  [2]
  1. Univ. of California, Los Angeles, CA (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Univ. of California, Los Angeles, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1597566
Grant/Contract Number:  
SC0017648
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 124; Journal Issue: 4; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; Beam control; Plasma acceleration & new acceleration techniques

Citation Formats

Roussel, R., Andonian, G., Lynn, W., Sanwalka, K., Robles, R., Hansel, C., Deng, A., Lawler, G., Rosenzweig, J. B., Ha, G., Seok, J., Power, J. G., Conde, M., Wisniewski, E., Doran, D. S., and Whiteford, C. E. Single Shot Characterization of High Transformer Ratio Wakefields in Nonlinear Plasma Acceleration. United States: N. p., 2020. Web. doi:10.1103/PhysRevLett.124.044802.
Roussel, R., Andonian, G., Lynn, W., Sanwalka, K., Robles, R., Hansel, C., Deng, A., Lawler, G., Rosenzweig, J. B., Ha, G., Seok, J., Power, J. G., Conde, M., Wisniewski, E., Doran, D. S., & Whiteford, C. E. Single Shot Characterization of High Transformer Ratio Wakefields in Nonlinear Plasma Acceleration. United States. doi:10.1103/PhysRevLett.124.044802.
Roussel, R., Andonian, G., Lynn, W., Sanwalka, K., Robles, R., Hansel, C., Deng, A., Lawler, G., Rosenzweig, J. B., Ha, G., Seok, J., Power, J. G., Conde, M., Wisniewski, E., Doran, D. S., and Whiteford, C. E. Fri . "Single Shot Characterization of High Transformer Ratio Wakefields in Nonlinear Plasma Acceleration". United States. doi:10.1103/PhysRevLett.124.044802.
@article{osti_1597566,
title = {Single Shot Characterization of High Transformer Ratio Wakefields in Nonlinear Plasma Acceleration},
author = {Roussel, R. and Andonian, G. and Lynn, W. and Sanwalka, K. and Robles, R. and Hansel, C. and Deng, A. and Lawler, G. and Rosenzweig, J. B. and Ha, G. and Seok, J. and Power, J. G. and Conde, M. and Wisniewski, E. and Doran, D. S. and Whiteford, C. E.},
abstractNote = {We report that plasma wakefields can enable very high accelerating gradients for frontier high energy particle accelerators, in excess of 10 GeV/m. To overcome limits on single stage acceleration, specially shaped drive beams can be used in both linear and nonlinear plasma wakefield accelerators (PWFA), to increase the transformer ratio, implying that the drive beam deceleration is minimized relative to acceleration obtained in the wake. In this Letter, we report the results of a nonlinear PWFA, high transformer ratio experiment using high-charge, longitudinally asymmetric drive beams in a plasma cell. An emittance exchange process is used to generate variable drive current profiles, in conjunction with a long (multiple plasma wavelength) witness beam. The witness beam is energy modulated by the wakefield, yielding a response that contains detailed spectral information in a single-shot measurement. Using these methods, we generate a variety of beam profiles and characterize the wakefields, directly observing transformer ratios up to R=7.8. Lastly, a spectrally based reconstruction technique, validated by 3D particle-in-cell simulations, is introduced to obtain the drive beam current profile from the decelerating wake data.},
doi = {10.1103/PhysRevLett.124.044802},
journal = {Physical Review Letters},
number = 4,
volume = 124,
place = {United States},
year = {2020},
month = {1}
}

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Works referenced in this record:

Energy doubling of 42 GeV electrons in a metre-scale plasma wakefield accelerator
journal, February 2007

  • Blumenfeld, Ian; Clayton, Christopher E.; Decker, Franz-Josef
  • Nature, Vol. 445, Issue 7129
  • DOI: 10.1038/nature05538

On Collinear Wake Field Acceleration
journal, October 1985

  • Bane, K. L. F.; Chen, Pisin; Wilson, P. B.
  • IEEE Transactions on Nuclear Science, Vol. 32, Issue 5
  • DOI: 10.1109/TNS.1985.4334416

Wake fields and wake field acceleration
conference, January 1985

  • Bane, K. L. F.; Wilson, P. B.; Weiland, T.
  • AIP Conference Proceedings Volume 127
  • DOI: 10.1063/1.35182

Tailored electron bunches with smooth current profiles for enhanced transformer ratios in beam-driven acceleration
journal, August 2015


Generation of Ramped Current Profiles in Relativistic Electron Beams Using Wakefields in Dielectric Structures
journal, February 2017


Generation and Measurement of Relativistic Electron Bunches Characterized by a Linearly Ramped Current Profile
journal, May 2008


Precision Control of the Electron Longitudinal Bunch Shape Using an Emittance-Exchange Beam Line
journal, March 2017


Generation of relativistic electron bunches with arbitrary current distribution via transverse-to-longitudinal phase space exchange
journal, February 2011

  • Piot, P.; Sun, Y. -E; Power, J. G.
  • Physical Review Special Topics - Accelerators and Beams, Vol. 14, Issue 2
  • DOI: 10.1103/PhysRevSTAB.14.022801

Single-shot wakefield measurement system
journal, June 2018


Observation of High Transformer Ratio of Shaped Bunch Generated by an Emittance-Exchange Beam Line
journal, March 2018


Observation of High Transformer Ratio Plasma Wakefield Acceleration
journal, August 2018


Spatial control of photoemitted electron beams using a microlens-array transverse-shaping technique
journal, October 2017


Perturbation-minimized triangular bunch for high-transformer ratio using a double dogleg emittance exchange beam line
journal, December 2016


Instantaneous Direct‐Display System of Plasma Parameters by Means of Triple Probe
journal, August 1965

  • Chen, Sin‐Li; Sekiguchi, T.
  • Journal of Applied Physics, Vol. 36, Issue 8
  • DOI: 10.1063/1.1714492

Approximations to multiple Coulomb scattering
journal, May 1991

  • Lynch, Gerald R.; Dahl, Orin I.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 58, Issue 1
  • DOI: 10.1016/0168-583X(91)95671-Y

The WARP Code: Modeling High Intensity Ion Beams
conference, January 2005

  • Grote, David P.
  • ELECTRON CYCLOTRON RESONANCE ION SOURCES: 16th International Workshop on ECR Ion Sources ECRIS'04, AIP Conference Proceedings
  • DOI: 10.1063/1.1893366

Interference phenomenon in optical transition radiation and its application to particle beam diagnostics and multiple‐scattering measurements
journal, August 1975

  • Wartski, L.; Roland, S.; Lasalle, J.
  • Journal of Applied Physics, Vol. 46, Issue 8
  • DOI: 10.1063/1.322092

Propagation of short electron pulses in underdense plasmas
journal, May 1994


Nonlinear Theory for Relativistic Plasma Wakefields in the Blowout Regime
journal, April 2006


Limits of linear plasma wakefield theory for electron or positron beams
journal, June 2005

  • Lu, W.; Huang, C.; Zhou, M. M.
  • Physics of Plasmas, Vol. 12, Issue 6
  • DOI: 10.1063/1.1905587

Acceleration and focusing of electrons in two-dimensional nonlinear plasma wake fields
journal, November 1991


Transverse emittance growth in staged laser-wakefield acceleration
journal, November 2012

  • Mehrling, T.; Grebenyuk, J.; Tsung, F. S.
  • Physical Review Special Topics - Accelerators and Beams, Vol. 15, Issue 11
  • DOI: 10.1103/PhysRevSTAB.15.111303

Plasma wakefield acceleration experiments at FACET
journal, May 2010