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Title: Synchronous acceleration with tapered dielectric-lined waveguides

Journal Article · · Physical Review Accelerators and Beams
 [1];  [1]; ORCiD logo [2];  [3];  [1]
  1. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  2. Northern Illinois Univ., DeKalb, IL (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  3. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Univ. of Hamburg, Hamburg (Germany)
+ Show Author Affiliations

Here, we present a general concept to accelerate non-relativistic charged particles. Our concept employs an adiabatically-tapered dielectric-lined waveguide which supports accelerating phase velocities for synchronous acceleration. We propose an ansatz for the transient field equations, show it satisfies Maxwell's equations under an adiabatic approximation and find excellent agreement with a finite-difference time-domain computer simulation. The fields were implemented into the particle-tracking program {\sc astra} and we present beam dynamics results for an accelerating field with a 1-mm-wavelength and peak electric field of 100~MV/m. The numerical simulations indicate that a $$\sim 200$$-keV electron beam can be accelerated to an energy of $$\sim10$$~MeV over $$\sim 10$$~cm. The novel scheme is also found to form electron beams with parameters of interest to a wide range of applications including, e.g., future advanced accelerators, and ultra-fast electron diffraction.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Grant/Contract Number:
AC02-07CH11359
OSTI ID:
1418142
Report Number(s):
FERMILAB-PUB--17-610-APC; DESY--17-240; arXiv:1712.08403; 1644832
Journal Information:
Physical Review Accelerators and Beams, Journal Name: Physical Review Accelerators and Beams Journal Issue: 5 Vol. 21; ISSN PRABCJ; ISSN 2469-9888
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (12)

Compression of high-density 0.16 pC electron bunches through high field gradients for ultrafast single shot electron diffraction: The Compact RF Gun journal July 2017
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AXSIS: Exploring the frontiers in attosecond X-ray science, imaging and spectroscopy
  • Kärtner, F. X.; Ahr, F.; Calendron, A. -L.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 829 https://doi.org/10.1016/j.nima.2016.02.080
journal September 2016
rf-induced beam dynamics in rf guns and accelerating cavities journal June 2015
TM 0,1 Mode in Circular Wave Guides with Two Coaxial Dielectrics journal July 1947
Compression of high-density 0.16 pC electron bunches through high field gradients for ultrafast single shot electron diffraction: The Compact RF Gun text January 2017

Cited By (12)

Design of a tapered slot waveguide dielectric laser accelerator for sub-relativistic electrons journal January 2018
Enhanced energy gain in a dielectric laser accelerator using a tilted pulse front laser journal January 2018
Simultaneous generation and compression of broadband terahertz pulses in aperiodically poled crystals text January 2019
Simultaneous generation and compression of broadband terahertz pulses in aperiodically poled crystals journal January 2019
Design of a tapered slot waveguide dielectric laser accelerator for sub-relativistic electrons conference January 2019
Terahertz-induced cascaded interactions between spectra offset by large frequencies text January 2019
Enhanced energy gain in a dielectric laser accelerator using a tilted pulse front laser text January 2018
Analysis of terahertz generation by beamlet superposition journal January 2019
Simultaneous generation and compression of broadband terahertz pulses in aperiodically poled crystals text January 2018
Analysis of terahertz generation by beamlet superpostion text January 2019
Terahertz-induced cascaded interactions between spectra offset by large frequencies journal January 2019
Cascaded Multicycle Terahertz-Driven Ultrafast Electron Acceleration and Manipulation journal March 2020

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