Pulse front tilt steering in laser plasma accelerators

We report on the effect of laser spatiotemporal coupling in laser plasma accelerators. Pulse front tilt in the driving laser causes asymmetry in the wakefield, resulting in deflection of the electron beam from the laser axis. We explore the physical mechanisms and propose a quantitative model of ele...

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Published in:Physical review. Accelerators and beams 2019-07, Vol.22 (7), p.071301, Article 071301
Main Authors: Thévenet, Maxence, Mittelberger, Daniel E., Nakamura, Kei, Lehe, Rémi, Schroeder, Carl B., Vay, Jean-Luc, Esarey, Eric, Leemans, Wim P.
Format: Article
Language:English
Subjects:
Beam steering
Electron beams
Laser plasmas
Lasers
PARTICLE ACCELERATORS
Particle in cell technique
Physics
Plasma
Plasma accelerators
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cited_by cdi_FETCH-LOGICAL-c369t-6f5f15de091fedf7f525afa823f18c0b56f679335f3b4ae4647877d67dfe5c243
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container_issue 7
container_start_page 071301
container_title Physical review. Accelerators and beams
container_volume 22
creator Thévenet, Maxence
Mittelberger, Daniel E.
Nakamura, Kei
Lehe, Rémi
Schroeder, Carl B.
Vay, Jean-Luc
Esarey, Eric
Leemans, Wim P.
description We report on the effect of laser spatiotemporal coupling in laser plasma accelerators. Pulse front tilt in the driving laser causes asymmetry in the wakefield, resulting in deflection of the electron beam from the laser axis. We explore the physical mechanisms and propose a quantitative model of electron steering, which is validated with particle-in-cell simulations. Even a small amount of pulse front tilt can result in beam steering in the final down ramp of the plasma profile, which may lead to unexpected beam-pointing errors or fluctuations. On the other hand, it can be used to govern the final beam direction, which has consequences for staging laser plasma accelerators in a high-energy physics collider as well as x-ray generation for biological imaging.
doi_str_mv 10.1103/PhysRevAccelBeams.22.071301
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subjects Beam steering
Electron beams
Laser plasmas
Lasers
PARTICLE ACCELERATORS
Particle in cell technique
Physics
Plasma
Plasma accelerators
title Pulse front tilt steering in laser plasma accelerators
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