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Title: Self-mapping the longitudinal field structure of a nonlinear plasma accelerator cavity

Abstract

The preservation of emittance of the accelerating beam is the next challenge for plasma-based accelerators envisioned for future light sources and colliders. The field structure of a highly nonlinear plasma wake is potentially suitable for this purpose but has not been yet measured. Here we show that the longitudinal variation of the fields in a nonlinear plasma wakefield accelerator cavity produced by a relativistic electron bunch can be mapped using the bunch itself as a probe. We find that, for much of the cavity that is devoid of plasma electrons, the transverse force is constant longitudinally to within ±3% (r.m.s.). Moreover, comparison of experimental data and simulations has resulted in mapping of the longitudinal electric field of the unloaded wake up to 83 GV m –1 to a similar degree of accuracy. Lastly, these results bode well for high-gradient, high-efficiency acceleration of electron bunches while preserving their emittance in such a cavity.

Authors:
 [1];  [2];  [2]; ORCiD logo [1];  [2]; ORCiD logo [3];  [2];  [2];  [2];  [2];  [1];  [2];  [4];  [1];  [1]; ORCiD logo [1];  [1];  [2]
  1. Univ. of California, Los Angeles, CA (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States); LOA, ENSTA Paris Tech, CNRS, Ecole Polytechnique, Univ. Paris-Saclay, Palaiseau (France)
  4. Tsinghua Univ., Beijing (China)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1326210
Report Number(s):
SLAC-PUB-16820
Journal ID: ISSN 2041-1723; ncomms12483
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 7; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Clayton, C. E., Adli, E., Allen, J., An, W., Clarke, C. I., Corde, S., Frederico, J., Gessner, S., Green, S. Z., Hogan, M. J., Joshi, C., Litos, M., Lu, W., Marsh, K. A., Mori, W. B., Vafaei-Najafabadi, N., Xu, X., and Yakimenko, V. Self-mapping the longitudinal field structure of a nonlinear plasma accelerator cavity. United States: N. p., 2016. Web. doi:10.1038/ncomms12483.
Clayton, C. E., Adli, E., Allen, J., An, W., Clarke, C. I., Corde, S., Frederico, J., Gessner, S., Green, S. Z., Hogan, M. J., Joshi, C., Litos, M., Lu, W., Marsh, K. A., Mori, W. B., Vafaei-Najafabadi, N., Xu, X., & Yakimenko, V. Self-mapping the longitudinal field structure of a nonlinear plasma accelerator cavity. United States. doi:10.1038/ncomms12483.
Clayton, C. E., Adli, E., Allen, J., An, W., Clarke, C. I., Corde, S., Frederico, J., Gessner, S., Green, S. Z., Hogan, M. J., Joshi, C., Litos, M., Lu, W., Marsh, K. A., Mori, W. B., Vafaei-Najafabadi, N., Xu, X., and Yakimenko, V. Tue . "Self-mapping the longitudinal field structure of a nonlinear plasma accelerator cavity". United States. doi:10.1038/ncomms12483. https://www.osti.gov/servlets/purl/1326210.
@article{osti_1326210,
title = {Self-mapping the longitudinal field structure of a nonlinear plasma accelerator cavity},
author = {Clayton, C. E. and Adli, E. and Allen, J. and An, W. and Clarke, C. I. and Corde, S. and Frederico, J. and Gessner, S. and Green, S. Z. and Hogan, M. J. and Joshi, C. and Litos, M. and Lu, W. and Marsh, K. A. and Mori, W. B. and Vafaei-Najafabadi, N. and Xu, X. and Yakimenko, V.},
abstractNote = {The preservation of emittance of the accelerating beam is the next challenge for plasma-based accelerators envisioned for future light sources and colliders. The field structure of a highly nonlinear plasma wake is potentially suitable for this purpose but has not been yet measured. Here we show that the longitudinal variation of the fields in a nonlinear plasma wakefield accelerator cavity produced by a relativistic electron bunch can be mapped using the bunch itself as a probe. We find that, for much of the cavity that is devoid of plasma electrons, the transverse force is constant longitudinally to within ±3% (r.m.s.). Moreover, comparison of experimental data and simulations has resulted in mapping of the longitudinal electric field of the unloaded wake up to 83 GV m–1 to a similar degree of accuracy. Lastly, these results bode well for high-gradient, high-efficiency acceleration of electron bunches while preserving their emittance in such a cavity.},
doi = {10.1038/ncomms12483},
journal = {Nature Communications},
number = ,
volume = 7,
place = {United States},
year = {Tue Aug 16 00:00:00 EDT 2016},
month = {Tue Aug 16 00:00:00 EDT 2016}
}

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