Dielectric Wakefield Acceleration of a Relativistic Electron Beam in a Slab-Symmetric Dielectric Lined Waveguide

Andonian, G.; Stratakis, Diktys; Babzien, M.; Barber, Sam; Fedurin, M.; Hemsing, E.; Kusche, K.; Muggli, P.; O’Shea, Brendan; Wei, Xuelian; Williams, O.; Yakimenko, V.; Rosenzweig, James

doi:10.1103/physrevlett.108.244801

Cited by 58 publications

(41 citation statements)

References 17 publications

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“…Wakefields in rectangular dielectric-loaded structures have been experimentally studied [14,[38][39][40], Table I. In [38,39] a wakefield measurement using a single crystal diamond-loaded rectangular accelerating structure was reported.…”

Section: Comparison With Numerical Simulations and Experimental Rementioning

confidence: 99%

“…3(b) shows the E z magnitude behind the bunch with the structure parameters [40]. It should be noted that the only [40] that gives 1 ¼ 1800 m, 2 ¼ 600 m, and 3 ¼ 355 m for the mode wavelengths. Meanwhile, the proposed formalism allows resolving the fine structure of the LSM modes: Fig.…”

Section: Comparison With Numerical Simulations and Experimental Rementioning

confidence: 99%

“…In [40], wakefield acceleration of a relativistic electron beam in a dielectric-lined slab-symmetric THz structure was reported. The high energy tail of a $60 MeV electron beam was accelerated by $150 keV in a 2 cm long, slabsymmetric quartz (" ¼ 3:8) structure.…”

Section: Comparison With Numerical Simulations and Experimental Rementioning

confidence: 99%

“…The dielectric waveguide structure was characterized by spectral analysis of the Cherenkov radiation at THz frequencies. The spacing of a relativistic bunch train was selectively tuned to excite the second longitudinal mode LSM 21 [40]. The structure parameters are b ¼ 120 m, c ¼ 360 m, structure width w ¼ 2 cm, structure length L ¼ 2 cm, bunch charge Q ¼ 90 pC, bunch length…”

Section: Comparison With Numerical Simulations and Experimental Rementioning

confidence: 99%

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Transverse operator method for wakefields in a rectangular dielectric loaded accelerating structure

Baturin

Sheinman

Altmark

et al. 2013

Phys. Rev. ST Accel. Beams

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Cherenkov radiation generated by a relativistic electron bunch in a rectangular dielectric-loaded waveguide is analyzed under the assumption that the dielectric layers are inhomogeneous normal to the beam path. We propose a method that uses eigenfunctions of the transverse operator applied to develop a rigorous full solution for the wakefields that are generated. The dispersion equation for the structure is derived and the wakefield analysis is carried out. The formalism developed here allows the direct solution of the inhomogeneous system of Maxwell equations, an alternative analytic approach to the analysis of wakefields in contrast to the previously used impedance method for rectangular structure analysis. The formalism described here was successfully applied to the analysis of rectangular dielectric-lined structures that have been recently beam tested at the Argonne (ANL/AWA) and Brookhaven (BNL/ATF) accelerator facilities.

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Section: Comparison With Numerical Simulations and Experimental Rementioning

confidence: 99%

Section: Comparison With Numerical Simulations and Experimental Rementioning

confidence: 99%

Section: Comparison With Numerical Simulations and Experimental Rementioning

confidence: 99%

Section: Comparison With Numerical Simulations and Experimental Rementioning

confidence: 99%

See 2 more Smart Citations

Transverse operator method for wakefields in a rectangular dielectric loaded accelerating structure

Baturin

Sheinman

Altmark

et al. 2013

Phys. Rev. ST Accel. Beams

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“…Advanced acceleration concepts are a major emphasis, notably electron acceleration in wakefields in plasmas 14 and also in dielectrics. 15 Both depend on the longitudinal bunch profile, which is measured by a new transverse deflecting cavity and by two THz experiments. The first studies Smith-Purcell radiation.…”

Section: A Facetmentioning

confidence: 99%

Intense terahertz pulses from SLAC electron beams using coherent transition radiation

Fisher

Goodfellow

et al. 2013

Review of Scientific Instruments

143

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SLAC has two electron accelerators, the Linac Coherent Light Source (LCLS) and the Facility for Advanced Accelerator Experimental Tests (FACET), providing high-charge, high-peak-current, femtosecond electron bunches. These characteristics are ideal for generating intense broadband terahertz (THz) pulses via coherent transition radiation. For LCLS and FACET respectively, the THz pulse duration is typically 20 and 80 fs RMS and can be tuned via the electron bunch duration; emission spectra span 3-30 THz and 0.5 THz-5 THz; and the energy in a quasi-half-cycle THz pulse is 0.2 and 0.6 mJ. The peak electric field at a THz focus has reached 4.4 GV/m (0.44 V/Å) at LCLS. This paper presents measurements of the terahertz pulses and preliminary observations of nonlinear materials response.

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High‐Q Metallic Fano Metamaterial for Highly Efficient Cerenkov Lasing

Kim

Baek

Bhattacharya

et al. 2018

Advanced Optical Materials

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development of such CR-based applications is limited by thermal and dielectric breakdown issues. [3,4] Another limitation is that, due to the velocity threshold, large facilities are required to generate highly energetic particles. These limitations restrict the upper and lower size and performance boundaries in vital applications. Nowadays, metallic metamaterial devices have been proposed, which overcome the limitations of conventional Cerenkov devices to realize reversed CR from the negative-refractive index, [5] the ultralow threshold of kinetic energy in hyperbolic metamaterials, [6] and various metallic metamaterials comprised of subwavelength slits. [7][8][9] However, the realization of a high quality factor (Q) is still an outstanding roadblock for practical Cerenkov devices. Previous works on Cerenkov lasing (CL) using mirrors were limited by a lower electron beam impedance due to the interaction device and the radio-frequency (RF) coupling mechanism. [4,10] Here, to achieve a high Q for highly efficient CL, we focus on maximally trapping the electromagnetic Cerenkov radiation wave to extend its interaction with the electron beam and on controlling the radiation damping, as has been described in Rayleigh scattering to maximize the efficiency of CL. In this paper, we demonstrate that the interplay between an extremely low group velocity from the infinite transverse permittivity of the anisotropic metamaterials and the subradiant A high-quality-factor (high-Q) metallic Fano metamaterial is demonstrated both experimentally and theoretically. This material is suitable for highly efficient Cerenkov lasing in which subwavelength metallic slits are arranged to form asymmetric unit cells. In contrast to conventional dielectric Cerenkov or Smith-Purcell devices, in the proposed device, convection electrons traverse the high-Q metallic metamaterial. The interplay between an extremely low group velocity from the infinite transverse permittivity of the anisotropic metamaterial and the subradiant damping from a Fano-type slit mode is shown to be responsible for the high-Q value, which is measured to be unprecedented at 700. The resulting improvement in the Cerenkov lasing efficiency is estimated to be more than two orders of magnitude using a particle-in-cell simulation.

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Dielectric Wakefield Acceleration of a Relativistic Electron Beam in a Slab-Symmetric Dielectric Lined Waveguide

Cited by 58 publications

References 17 publications

Transverse operator method for wakefields in a rectangular dielectric loaded accelerating structure

Transverse operator method for wakefields in a rectangular dielectric loaded accelerating structure

Intense terahertz pulses from SLAC electron beams using coherent transition radiation

High‐Q Metallic Fano Metamaterial for Highly Efficient Cerenkov Lasing

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