Dielectric laser acceleration of 28keV electrons with the inverse Smith–Purcell effect

Breuer, John; Hommelhoff, Peter

doi:10.1016/j.nima.2013.10.078

Cited by 12 publications

(6 citation statements)

References 16 publications

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“…These record gradients are enabled especially by modern ultrashort-pulsed laser systems, mostly in the infrared spectrum, and by challenging nanofabrication techniques for the high damage threshold dielectric materials, as adopted from the semiconductor industry. Due to these high technical demands, the experimental demonstration of electron acceleration in DLA came only in 2013, more than 50 years later than the original proposal [4,5]. These promising results of gradients, generating only energy spread till then , lead to the funding of the ACHIP collaboration [6] in 2015 , in order to achieve an accelerator on a chip attaining MeV energy gain.…”

Section: Introductionmentioning

confidence: 99%

Beam dynamics in dielectric laser acceleration

Niedermayer¹,

Leedle²,

Musumeci³

et al. 2022

J. Inst.

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We discuss recent developments and challenges of beam dynamics in Dielectric Laser Acceleration (DLA), for both high and low energy electron beams. Starting from ultra-low emittance nanotip sources the paper follows the beam path of a tentative DLA light source concept. Acceleration in conjuction with focusing is discussed in the framework of Alternating Phase Focusing (APF) and spatial harmonic ponderomotive focusing. The paper concludes with an outlook to the beam dynamics in laser driven nanophotonic undulators, based on tilted DLA grating structures.

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Section: Introductionmentioning

confidence: 99%

Beam dynamics in dielectric laser acceleration

Niedermayer¹,

Leedle²,

Musumeci³

et al. 2022

J. Inst.

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“…structures are used to accelerate and manipulate particles via the inverse Smith-Purcell effect (hereinafter referred to as inverse Smith-Purcell (ISP-DLA)) [5][6][7][8][9][10]. Recently, a kind of DLA using the inverse Cherenkov effect (hereinafter referred to as inverse Cherenkov radiation (ICR-DLA)) has aroused great interest.…”

Section: Introductionmentioning

confidence: 99%

Inverse Cherenkov dielectric laser accelerator for ultra-relativistic particles

Zhang¹,

Liu²,

Liu³

et al. 2022

J. Phys. D: Appl. Phys.

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Recently, the laser-driven dielectric particle accelerator based on the inverse Cherenkov effect has aroused great interest, because it provides an option for developing desktop or even on-chip particle accelerators. So far, only sub-relativistic cases have been investigated. Previous studies showed that when the particle velocity reaches ultra-relativistic range, the acceleration gradient of an inverse Cherenkov laser- driven dielectric accelerator with a single-side dielectric structure drops sharply. Here we illustrate that, by using a double-sided dielectric structure, a high acceleration gradient for ultra-relativistic particles can still be obtained. In addition, we find that, in the ultra-relativistic region, the acceleration gradient increases (not decreases) with the increase of particle energy. The single-sided and double-sided accelerator models under unilateral and bilateral laser-driven conditions are investigated in detail. The results obtained are important for developing an inverse Cherenkov laser-driven dielectric accelerator for both sub-relativistic and ultra-relativistic regions.

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“…These record gradients are enabled especially by modern ultrashort-pulsed laser systems, mostly in the infrared spectrum, and by nanofabrication techniques for the high damage threshold dielectric materials, as adopted from the semiconductor industry. Due to these high technical demands, the experimental demonstration of electron acceleration in DLA came only in 2013, more than 50 years later than the original proposal [4,5]. These promising results of gradients, generating only energy spread so far, lead to the funding of the ACHIP collaboration [6], in order to achieve an accelerator attaining MeV energy gain.…”

Section: Introductionmentioning

confidence: 99%

Challenges in simulating beam dynamics of dielectric laser acceleration

Niedermayer

Adelmann

Bettoni

et al. 2019

Int. J. Mod. Phys. A

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Dielectric Laser Acceleration (DLA) achieves the highest gradients among structure-based electron accelerators. The use of dielectrics increases the breakdown field limit, and thus the achievable gradient, by a factor of at least 10 in comparison to metals. Experimental demonstrations of DLA in 2013 led to the Accelerator on a Chip International Program (ACHIP), funded by the Gordon and Betty Moore Foundation. In ACHIP, our main goal is to build an accelerator on a silicon chip, which can accelerate electrons from below 100 keV to above 1 MeV with a gradient of at least 100 MeV/m. For stable acceleration on the chip, magnet-only focusing techniques are insufficient to compensate the strong acceleration defocusing. Thus, spatial harmonic and Alternating Phase Focusing (APF) laser-based focusing techniques have been developed. We have also developed the simplified symplectic tracking code DLAtrack6D, which makes use of the periodicity and applies only one kick per DLA cell, which is calculated by the Fourier coefficient of the synchronous spatial harmonic. Due to coupling, the Fourier coefficients of neighboring cells are not entirely independent and a field flatness optimization (similarly as in multi-cell cavities) needs to be performed. The simulation of the entire accelerator on a chip by a Particle In Cell (PIC) code is possible, but impractical for optimization purposes. Finally, we have also outlined the treatment of wake field effects in attosecond bunches in the grating within DLAtrack6D, where the wake function is computed by an external solver.

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Dielectric laser acceleration of 28keV electrons with the inverse Smith–Purcell effect

Cited by 12 publications

References 16 publications

Beam dynamics in dielectric laser acceleration

Beam dynamics in dielectric laser acceleration

Inverse Cherenkov dielectric laser accelerator for ultra-relativistic particles

Challenges in simulating beam dynamics of dielectric laser acceleration

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