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Title: Laser and electron deflection from transverse asymmetries in laser-plasma accelerators

Abstract

Here, we report on the deflection of laser pulses and accelerated electrons in a laser-plasma accelerator (LPA) by the effects of laser pulse front tilt and transverse density gradients. Asymmetry in the plasma index of refraction leads to laser steering, which can be due to a density gradient or spatiotemporal coupling of the laser pulse. The transverse forces from the skewed plasma wave can also lead to electron deflection relative to the laser. Quantitative models are proposed for both the laser and electron steering, which are confirmed by particle-in-cell simulations. Experiments with the BELLA Petawatt Laser are presented which show controllable 0.1-1 mrad laser and electron beam deflection from laser pulse front tilt. This has potential applications for electron beam pointing control, which is of paramount importance for LPA applications.

Authors:
ORCiD logo [1]; ORCiD logo [2];  [2];  [2];  [2];  [3];  [2];  [2];  [2];  [2];  [2];  [4]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Monterey Bay Aquarium Research Inst., Moss Landing, CA (United States)
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF)
OSTI Identifier:
1616976
Grant/Contract Number:  
AC02-05CH11231; 1632796
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review E
Additional Journal Information:
Journal Volume: 100; Journal Issue: 6; Journal ID: ISSN 2470-0045
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; beam injection, extraction & transport; high intensity laser-plasma interactions; laser wakefield acceleration; electron sources; particle-in-cell methods

Citation Formats

Mittelberger, Daniel E., Thévenet, Maxence, Nakamura, Kei, Gonsalves, Anthony J., Benedetti, Carlo, Daniels, Joost, Steinke, Sven, Lehe, Rémi, Vay, Jean-Luc, Schroeder, Carl B., Esarey, Eric, and Leemans, Wim P. Laser and electron deflection from transverse asymmetries in laser-plasma accelerators. United States: N. p., 2019. Web. https://doi.org/10.1103/physreve.100.063208.
Mittelberger, Daniel E., Thévenet, Maxence, Nakamura, Kei, Gonsalves, Anthony J., Benedetti, Carlo, Daniels, Joost, Steinke, Sven, Lehe, Rémi, Vay, Jean-Luc, Schroeder, Carl B., Esarey, Eric, & Leemans, Wim P. Laser and electron deflection from transverse asymmetries in laser-plasma accelerators. United States. https://doi.org/10.1103/physreve.100.063208
Mittelberger, Daniel E., Thévenet, Maxence, Nakamura, Kei, Gonsalves, Anthony J., Benedetti, Carlo, Daniels, Joost, Steinke, Sven, Lehe, Rémi, Vay, Jean-Luc, Schroeder, Carl B., Esarey, Eric, and Leemans, Wim P. Mon . "Laser and electron deflection from transverse asymmetries in laser-plasma accelerators". United States. https://doi.org/10.1103/physreve.100.063208. https://www.osti.gov/servlets/purl/1616976.
@article{osti_1616976,
title = {Laser and electron deflection from transverse asymmetries in laser-plasma accelerators},
author = {Mittelberger, Daniel E. and Thévenet, Maxence and Nakamura, Kei and Gonsalves, Anthony J. and Benedetti, Carlo and Daniels, Joost and Steinke, Sven and Lehe, Rémi and Vay, Jean-Luc and Schroeder, Carl B. and Esarey, Eric and Leemans, Wim P.},
abstractNote = {Here, we report on the deflection of laser pulses and accelerated electrons in a laser-plasma accelerator (LPA) by the effects of laser pulse front tilt and transverse density gradients. Asymmetry in the plasma index of refraction leads to laser steering, which can be due to a density gradient or spatiotemporal coupling of the laser pulse. The transverse forces from the skewed plasma wave can also lead to electron deflection relative to the laser. Quantitative models are proposed for both the laser and electron steering, which are confirmed by particle-in-cell simulations. Experiments with the BELLA Petawatt Laser are presented which show controllable 0.1-1 mrad laser and electron beam deflection from laser pulse front tilt. This has potential applications for electron beam pointing control, which is of paramount importance for LPA applications.},
doi = {10.1103/physreve.100.063208},
journal = {Physical Review E},
number = 6,
volume = 100,
place = {United States},
year = {2019},
month = {12}
}

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