Simulation of 3-D effects in THz-based phase space manipulation

Curry, E.; Fabbri, Simon J.; Musumeci, P.; Gover, A.

doi:10.1016/j.nima.2017.02.005

Cited by 2 publications

(2 citation statements)

References 12 publications

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“…By copropagating a single cycle 1 µJ THz pulse with a 4-9 MeV high brightness electron beam from an RF photoinjector [25] in a 30 cm long planar undulator and a tunable plate spacing CPPWG, we observed up to 150 keV peakto-peak induced energy modulation. Results from beam energy scans at different plate spacings are used to demonstrate the resonant nature of the interaction and validate the numerical models for this scheme [26]. The induced energy modulation was observed to scale linearly with the THz field amplitude as expected, opening the door to scaling this scheme to significantly higher energies.…”

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confidence: 65%

“…The success of this first demonstration of a zero-slippage IFEL for THz-driven beam manipulation is bolstered by the versatility and accessibility of the design. Further applications of this THz coupling scheme include transverse deflection for longitudinal beam diagnostic [26] (using an odd-symmetry mode in the waveguide) and ultimately THz broadband amplification when a high charge beam is decelerated in a tapered undulator [31].…”

Section: Resultsmentioning

confidence: 99%

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Relativistic electron beam acceleration in a zero-slippage terahertz-driven Inverse Free Electron Laser scheme

Curry,

Fabbri,

Maxson

et al. 2017

Preprint

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THz radiation promises breakthrough advances in compact advanced accelerators due to the high frequency and GV/m fields achievable, orders of magnitude larger than in conventional radiofrequency (RF) based accelerators. Compared to laser-driven schemes, the large phase acceptances of THz-driven accelerators are advantageous for operation with sizable charge. Despite burgeoning research, THz sources, particularly laser-based ones, cannot yet compete with the efficiency of RF amplifiers for high average current accelerators. Nevertheless, THz-based phase space manipulation is of immediate interest for a variety of applications, including generation and diagnostics of ultrashort bunches for electron diffraction/microscopy and compact free-electron laser applications.The challenge of maintaining overlap and synchronism between an electron beam and short laser-generated THz pulse has so far limited interactions to the few mm scale. We discuss a novel scheme for simultaneous group and phase velocity matching of nearly single-cycle THz radiation with a relativistic electron beam for meter-scale interaction. We demonstrate energy modulations of up to 150 keV using modest THz pulse energies (≤ 1 µJ). We apply this large and efficient energy exchange for beam compression and time-stamping of a relativistic beam, paving the way towards realizing the unique opportunities enabled by laser-based THz accelerators.

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mentioning

confidence: 65%

Section: Resultsmentioning

confidence: 99%

Relativistic electron beam acceleration in a zero-slippage terahertz-driven Inverse Free Electron Laser scheme

Curry,

Fabbri,

Maxson

et al. 2017

Preprint

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Meter-Scale Terahertz-Driven Acceleration of a Relativistic Beam

et al. 2018

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Terahertz (THz) radiation promises breakthrough advances in compact advanced accelerators due to the gigavolts-per-meter fields achievable, but the challenge of maintaining overlap and synchronism between beams and short laser-generated THz pulses has so far limited interactions to the few-millimeter scale. We implement a novel scheme for simultaneous group and phase velocity matching of nearly single-cycle THz radiation with a relativistic electron beam for meter-scale inverse free-electron laser interaction in a magnetic undulator, resulting in energy modulations of up to 150 keV using modest THz pulse energies (≤1 μJ). Using this scheme, we demonstrate for the first time the use of a laser-based THz source for bunch-length compression and time-stamping of a relativistic electron beam.

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Simulation of 3-D effects in THz-based phase space manipulation

Cited by 2 publications

References 12 publications

Relativistic electron beam acceleration in a zero-slippage terahertz-driven Inverse Free Electron Laser scheme

Relativistic electron beam acceleration in a zero-slippage terahertz-driven Inverse Free Electron Laser scheme

Meter-Scale Terahertz-Driven Acceleration of a Relativistic Beam

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