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

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms12763· OSTI ID:1332903
 [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)

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.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC); High Energy Physics (HEP)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1332903
Report Number(s):
SLAC-PUB-16864
Journal Information:
Nature Communications, Vol. 7; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 67 works
Citation information provided by
Web of Science

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Cited By (15)

Efficient extraction of high power THz radiation generated by an ultra-relativistic electron beam in a dielectric loaded waveguide journal October 2016
Compact and tunable focusing device for plasma wakefield acceleration journal March 2018
Wakefield in solid state plasma with the ionic lattice force journal February 2018
Non-perturbing THz generation at the Tsinghua University Accelerator Laboratory 31 MeV electron beamline journal September 2018
Simulation of a concept for a compact ultrafast X-ray pulse source based on RF and THz technologies journal April 2019
Radiation of a charge flying in a partially loaded dielectric section of a waveguide journal March 2018
Driver-witness electron beam acceleration in dielectric mm-scale capillaries journal May 2018
Few-femtosecond electron beam with terahertz-frequency wakefield-driven compression journal August 2018
Radiation of a charge in dielectric concentrator for Cherenkov radiation: Off-axis charge motion journal August 2019
Direct Observation of Incoherent Cherenkov Diffraction Radiation in the Visible Range journal August 2018
High-Gradient Cherenkov Radiation Based on a New Dielectric-Loaded Waveguide journal November 2018
Simulation of a Concept for a Compact Ultrafast X-ray Pulse Source Based on RF and THz Technologies text January 2019
Few-femtosecond Electron Beam with THz-frequency Wakefield-driven Compression text January 2018
Radiation of a Charge in Dielectric Concentrator for Cherenkov Radiation: Off-Axis Charge Motion text January 2019
Experimental characterization of electron beam driven wakefield modes in a dielectric woodpile Cartesian symmetric structure text January 2017

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