Enabling high repetition rate laser wakefield acceleration at high- and low-plasma densities

Howard M. Milchberg; Bo Miao; Linus Feder; Jaron Shrock; Andrew Goffin

doi:10.1117/12.2592758

19 April 2021 Enabling high repetition rate laser wakefield acceleration at high- and low-plasma densities

Howard M. Milchberg, Bo Miao, Linus Feder, Jaron Shrock, Andrew Goffin

Proceedings Volume 11779, Laser Acceleration of Electrons, Protons, and Ions VI; 117790A (2021) https://doi.org/10.1117/12.2592758
Event: SPIE Optics + Optoelectronics, 2021, Online Only

Abstract

I will present recent results from 2 sets of laser plasma acceleration experiments spanning 4 orders of magnitude in plasma density. In near critical density hydrogen plasmas using 5 fs, < 3mJ laser pulses , we have demonstrated acceleration of few pC monoenergetic electron bunches up to 15 MeV at 1 kHz, at a record low beam divergence <10 mrad [1]. Mitigation of carrier envelope phase slip is key to this result. At the other extreme of plasma density, we have demonstrated 2 techniques [2,3] for generation of metre-scale low density plasma waveguides up to several hundred Rayleigh ranges in length, with recent preliminary results showing guiding of up to several hundred terawatts. [1] Laser-accelerated, low divergence 15 MeV quasi-monoenergetic electron bunches at 1 kHz, F. Salehi, M. Le, L. Railing, and H. M. Milchberg, submitted for publication [2] Optical Guiding in Meter-Scale Plasma Waveguides, B. Miao, L. Feder, J. E. Shrock, A. Goffin, and H. M. Milchberg, PHYSICAL REVIEW LETTERS 125, 074801 (2020) [3] Self-waveguiding of relativistic laser pulses in neutral gas channels, L. Feder, B. Miao, J. E. Shrock, A. Goffin, and H. M. Milchberg, PHYSICAL REVIEW RESEARCH 2, 043173 (2020)

Conference Presentation

Citation Download Citation

Howard M. Milchberg, Bo Miao, Linus Feder, Jaron Shrock, and Andrew Goffin "Enabling high repetition rate laser wakefield acceleration at high- and low-plasma densities", Proc. SPIE 11779, Laser Acceleration of Electrons, Protons, and Ions VI, 117790A (19 April 2021); https://doi.org/10.1117/12.2592758

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