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Title: Observation of acceleration and deceleration in gigaelectron-volt-per-metre gradient dielectric wakefield accelerators

Abstract

There is urgent need to develop new acceleration techniques capable of exceeding gigaelectron-volt-per-metre (GeV m –1) gradients in order to enable future generations of both light sources and high-energy physics experiments. To address this need, short wavelength accelerators based on wakefields, where an intense relativistic electron beam radiates the demanded fields directly into the accelerator structure or medium, are currently under intense investigation. One such wakefield based accelerator, the dielectric wakefield accelerator, uses a dielectric lined-waveguide to support a wakefield used for acceleration. Here we show gradients of 1.347±0.020 GeV m –1 using a dielectric wakefield accelerator of 15 cm length, with sub-millimetre transverse aperture, by measuring changes of the kinetic state of relativistic electron beams. We follow this measurement by demonstrating accelerating gradients of 320±17 MeV m –1. As a result, both measurements improve on previous measurements by and order of magnitude and show promise for dielectric wakefield accelerators as sources of high-energy electrons.

Authors:
 [1];  [2];  [2];  [2];  [2]; ORCiD logo [2];  [2];  [3];  [2];  [2];  [3];  [2]
  1. Univ. of California, Los Angeles, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
  2. Univ. of California, Los Angeles, CA (United States)
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC); High Energy Physics (HEP)
OSTI Identifier:
1332903
Report Number(s):
SLAC-PUB-16864
Journal ID: ISSN 2041-1723
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; ACCPHY; experimental particle physics; plasma-based accelerators

Citation Formats

O’Shea, B. D., Andonian, G., Barber, S. K., Fitzmorris, K. L., Hakimi, S., Harrison, J., Hoang, P. D., Hogan, M. J., Naranjo, B., Williams, O. B., Yakimenko, V., and Rosenzweig, J. B.. Observation of acceleration and deceleration in gigaelectron-volt-per-metre gradient dielectric wakefield accelerators. United States: N. p., 2016. Web. doi:10.1038/ncomms12763.
O’Shea, B. D., Andonian, G., Barber, S. K., Fitzmorris, K. L., Hakimi, S., Harrison, J., Hoang, P. D., Hogan, M. J., Naranjo, B., Williams, O. B., Yakimenko, V., & Rosenzweig, J. B.. Observation of acceleration and deceleration in gigaelectron-volt-per-metre gradient dielectric wakefield accelerators. United States. doi:10.1038/ncomms12763.
O’Shea, B. D., Andonian, G., Barber, S. K., Fitzmorris, K. L., Hakimi, S., Harrison, J., Hoang, P. D., Hogan, M. J., Naranjo, B., Williams, O. B., Yakimenko, V., and Rosenzweig, J. B.. Wed . "Observation of acceleration and deceleration in gigaelectron-volt-per-metre gradient dielectric wakefield accelerators". United States. doi:10.1038/ncomms12763. https://www.osti.gov/servlets/purl/1332903.
@article{osti_1332903,
title = {Observation of acceleration and deceleration in gigaelectron-volt-per-metre gradient dielectric wakefield accelerators},
author = {O’Shea, B. D. and Andonian, G. and Barber, S. K. and Fitzmorris, K. L. and Hakimi, S. and Harrison, J. and Hoang, P. D. and Hogan, M. J. and Naranjo, B. and Williams, O. B. and Yakimenko, V. and Rosenzweig, J. B.},
abstractNote = {There is urgent need to develop new acceleration techniques capable of exceeding gigaelectron-volt-per-metre (GeV m–1) gradients in order to enable future generations of both light sources and high-energy physics experiments. To address this need, short wavelength accelerators based on wakefields, where an intense relativistic electron beam radiates the demanded fields directly into the accelerator structure or medium, are currently under intense investigation. One such wakefield based accelerator, the dielectric wakefield accelerator, uses a dielectric lined-waveguide to support a wakefield used for acceleration. Here we show gradients of 1.347±0.020 GeV m–1 using a dielectric wakefield accelerator of 15 cm length, with sub-millimetre transverse aperture, by measuring changes of the kinetic state of relativistic electron beams. We follow this measurement by demonstrating accelerating gradients of 320±17 MeV m–1. As a result, both measurements improve on previous measurements by and order of magnitude and show promise for dielectric wakefield accelerators as sources of high-energy electrons.},
doi = {10.1038/ncomms12763},
journal = {Nature Communications},
number = ,
volume = 7,
place = {United States},
year = {Wed Sep 14 00:00:00 EDT 2016},
month = {Wed Sep 14 00:00:00 EDT 2016}
}

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