The effect of laser pulse evolution on down‑ramp injection in laser wakefield accelerators

Arohi Jain; Samuel R. Yoffe; Bernhard Ersfeld; George K. Holt; Devki Nandan Gupta; Dino A. Jaroszynski

doi:10.1038/s41598-024-69049-4

The effect of laser pulse evolution on down‑ramp injection in laser wakefield accelerators

Arohi Jain, Samuel R. Yoffe, Bernhard Ersfeld, George K. Holt, Devki Nandan Gupta^*, Dino A. Jaroszynski^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

13 Downloads (Pure)

Abstract

Electron self-injection in laser wakefield accelerators (LWFAs) is an important determinator of electron beam parameters. Controllable and adjustable LWFA beams are essential for applications. Controlled injection by capturing sheath electrons can be achieved using plasma density down-ramps or bumps, which perturb the LWFA bubble phase velocity by varying the plasma frequency and by affecting relativistic self-focussing of the laser. We report on a comprehensive study, using particle-in-cell simulations, of the effect of laser pulse evolution on injection on density perturbations. We show how the LWFA can be optimised to make it suitable for use in a wide range of applications, in particular those requiring short duration, low slice-emittance and low energy spread, and high-charge electron bunches.

Original language	English
Article number	19127
Number of pages	11
Journal	Scientific Reports
Volume	14
Early online date	19 Aug 2024
DOIs	https://doi.org/10.1038/s41598-024-69049-4
Publication status	Published - 19 Aug 2024

Funding

This work is financially supported by the Science and Engineering Research Board, Department of Science & Technology, Government of India (Grant No. CRG/2022/001989). We also acknowledge support from the U.K. EPSRC (grant number EP/N028694/1) and received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement no. 871124 Laserlab-Europe. SRY and BE acknowledge support from the STFC (grant number ST/G008248/1). Results were obtained using the ARCHIE-WeSt High Performance Computer (https:// www. archie- west. ac. uk) based at the University of Strathclyde, and the facilities of the N8 Centre of Excellence in Computationally Intensive Research (N8 CIR) provided and funded by the N8 research partnership and EPSRC (grant number EP/T022167/1), coordinated by the Universities of Durham, Manchester and York.

Keywords

plasma-based accelerators
plasma physics

Access to Document

10.1038/s41598-024-69049-4Licence: CC BY 4.0

Jain-etal-SR-2024-The-effect-of-laser-pulse-evolution-on-down-ramp-injectionFinal published version, 3.4 MBLicence: CC BY 4.0

The Integrated Initiative of European Laser Research Infrastructures (H2020 RIA) LASERLAB-EUROPE
Jaroszynski, D. (Principal Investigator)
European Commission - Horizon Europe + H2020
1/12/19 → 30/11/24
Project: Research
Lab in a bubble
Jaroszynski, D. (Principal Investigator), Boyd, M. (Co-investigator), Brunetti, E. (Co-investigator), Ersfeld, B. (Co-investigator), Hidding, B. (Co-investigator), McKenna, P. (Co-investigator), Noble, A. (Co-investigator), Sheng, Z.-M. (Co-investigator), Vieux, G. (Co-investigator), Welsh, G. H. (Co-investigator) & Wiggins, M. (Co-investigator)
EPSRC (Engineering and Physical Sciences Research Council)
1/04/16 → 31/03/21
Project: Research

Data for: “The effect of laser pulse evolution on down-ramp injection in laser wakefield accelerators”
Yoffe, S. (Creator) & Jaroszynski, D. (Owner), University of Strathclyde, 8 Jan 2024
DOI: 10.15129/7b3da154-f717-4b15-8118-abe3828c7c56, https://github.com/fbpic/fbpic
Dataset

Cite this

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title = "The effect of laser pulse evolution on down‑ramp injection in laser wakefield accelerators",

abstract = "Electron self-injection in laser wakefield accelerators (LWFAs) is an important determinator of electron beam parameters. Controllable and adjustable LWFA beams are essential for applications. Controlled injection by capturing sheath electrons can be achieved using plasma density down-ramps or bumps, which perturb the LWFA bubble phase velocity by varying the plasma frequency and by affecting relativistic self-focussing of the laser. We report on a comprehensive study, using particle-in-cell simulations, of the effect of laser pulse evolution on injection on density perturbations. We show how the LWFA can be optimised to make it suitable for use in a wide range of applications, in particular those requiring short duration, low slice-emittance and low energy spread, and high-charge electron bunches.",

keywords = "plasma-based accelerators, plasma physics",

author = "Arohi Jain and Yoffe, {Samuel R.} and Bernhard Ersfeld and Holt, {George K.} and Gupta, {Devki Nandan} and Jaroszynski, {Dino A.}",

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AU - Yoffe, Samuel R.

AU - Ersfeld, Bernhard

AU - Holt, George K.

AU - Gupta, Devki Nandan

AU - Jaroszynski, Dino A.

PY - 2024/8/19

Y1 - 2024/8/19

N2 - Electron self-injection in laser wakefield accelerators (LWFAs) is an important determinator of electron beam parameters. Controllable and adjustable LWFA beams are essential for applications. Controlled injection by capturing sheath electrons can be achieved using plasma density down-ramps or bumps, which perturb the LWFA bubble phase velocity by varying the plasma frequency and by affecting relativistic self-focussing of the laser. We report on a comprehensive study, using particle-in-cell simulations, of the effect of laser pulse evolution on injection on density perturbations. We show how the LWFA can be optimised to make it suitable for use in a wide range of applications, in particular those requiring short duration, low slice-emittance and low energy spread, and high-charge electron bunches.

AB - Electron self-injection in laser wakefield accelerators (LWFAs) is an important determinator of electron beam parameters. Controllable and adjustable LWFA beams are essential for applications. Controlled injection by capturing sheath electrons can be achieved using plasma density down-ramps or bumps, which perturb the LWFA bubble phase velocity by varying the plasma frequency and by affecting relativistic self-focussing of the laser. We report on a comprehensive study, using particle-in-cell simulations, of the effect of laser pulse evolution on injection on density perturbations. We show how the LWFA can be optimised to make it suitable for use in a wide range of applications, in particular those requiring short duration, low slice-emittance and low energy spread, and high-charge electron bunches.

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DO - 10.1038/s41598-024-69049-4

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VL - 14

JO - Scientific Reports

JF - Scientific Reports

M1 - 19127

ER -

The effect of laser pulse evolution on down‑ramp injection in laser wakefield accelerators

Abstract

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Projects

The Integrated Initiative of European Laser Research Infrastructures (H2020 RIA) LASERLAB-EUROPE

Lab in a bubble

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Data for: “The effect of laser pulse evolution on down-ramp injection in laser wakefield accelerators”

Cite this