Electron beam manipulation, injection and acceleration in plasma wakefield accelerators by optically generated plasma density spikes

Georg Wittig, Oliver S. Karger, Alexander Knetsch, Yunfeng Xi, Aihua Deng, James B. Rosenzweig, David L. Bruhwiler, Jonathan Smith, Zheng-Ming Sheng, Dino A. Jaroszynski, Grace G. Manahan, Bernhard Hidding

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Abstract

We discuss considerations regarding a novel and robust scheme for optically triggered electron bunch generation in plasma wakefield accelerators [1]. In this technique, a transversely propagating focused laser pulse ignites a quasi-stationary plasma column before the arrival of the plasma wake. This localized plasma density enhancement or optical "plasma torch" distorts the blowout during the arrival of the electron drive bunch and modifies the electron trajectories, resulting in controlled injection. By changing the gas density, and the laser pulse parameters such as beam waist and intensity, and by moving the focal point of the laser pulse, the shape of the plasma torch, and therefore the generated trailing beam, can be tuned easily. The proposed method is much more flexible and faster in generating gas density transitions when compared to hydrodynamics-based methods, and it accommodates experimentalists needs as it is a purely optical process and straightforward to implement.

Original languageEnglish
Number of pages5
JournalNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Early online date17 Feb 2016
DOIs
Publication statusE-pub ahead of print - 17 Feb 2016

Fingerprint

Plasma accelerators
plasma accelerators
Plasma density
spikes
plasma density
Plasma torches
manipulators
Electron beams
Laser pulses
plasma torches
Density of gases
gas density
electron beams
injection
arrivals
Electrons
pulses
lasers
Plasmas
electron trajectories

Keywords

  • 3D PIC simulations
  • particle bunch injection
  • plasma wakefield acceleration (PWFA)

Cite this

@article{c850c16053054c178d003c77401ce835,
title = "Electron beam manipulation, injection and acceleration in plasma wakefield accelerators by optically generated plasma density spikes",
abstract = "We discuss considerations regarding a novel and robust scheme for optically triggered electron bunch generation in plasma wakefield accelerators [1]. In this technique, a transversely propagating focused laser pulse ignites a quasi-stationary plasma column before the arrival of the plasma wake. This localized plasma density enhancement or optical {"}plasma torch{"} distorts the blowout during the arrival of the electron drive bunch and modifies the electron trajectories, resulting in controlled injection. By changing the gas density, and the laser pulse parameters such as beam waist and intensity, and by moving the focal point of the laser pulse, the shape of the plasma torch, and therefore the generated trailing beam, can be tuned easily. The proposed method is much more flexible and faster in generating gas density transitions when compared to hydrodynamics-based methods, and it accommodates experimentalists needs as it is a purely optical process and straightforward to implement.",
keywords = "3D PIC simulations, particle bunch injection, plasma wakefield acceleration (PWFA)",
author = "Georg Wittig and Karger, {Oliver S.} and Alexander Knetsch and Yunfeng Xi and Aihua Deng and Rosenzweig, {James B.} and Bruhwiler, {David L.} and Jonathan Smith and Zheng-Ming Sheng and Jaroszynski, {Dino A.} and Manahan, {Grace G.} and Bernhard Hidding",
year = "2016",
month = "2",
day = "17",
doi = "10.1016/j.nima.2016.02.027",
language = "English",
journal = "Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",
issn = "0168-9002",

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TY - JOUR

T1 - Electron beam manipulation, injection and acceleration in plasma wakefield accelerators by optically generated plasma density spikes

AU - Wittig, Georg

AU - Karger, Oliver S.

AU - Knetsch, Alexander

AU - Xi, Yunfeng

AU - Deng, Aihua

AU - Rosenzweig, James B.

AU - Bruhwiler, David L.

AU - Smith, Jonathan

AU - Sheng, Zheng-Ming

AU - Jaroszynski, Dino A.

AU - Manahan, Grace G.

AU - Hidding, Bernhard

PY - 2016/2/17

Y1 - 2016/2/17

N2 - We discuss considerations regarding a novel and robust scheme for optically triggered electron bunch generation in plasma wakefield accelerators [1]. In this technique, a transversely propagating focused laser pulse ignites a quasi-stationary plasma column before the arrival of the plasma wake. This localized plasma density enhancement or optical "plasma torch" distorts the blowout during the arrival of the electron drive bunch and modifies the electron trajectories, resulting in controlled injection. By changing the gas density, and the laser pulse parameters such as beam waist and intensity, and by moving the focal point of the laser pulse, the shape of the plasma torch, and therefore the generated trailing beam, can be tuned easily. The proposed method is much more flexible and faster in generating gas density transitions when compared to hydrodynamics-based methods, and it accommodates experimentalists needs as it is a purely optical process and straightforward to implement.

AB - We discuss considerations regarding a novel and robust scheme for optically triggered electron bunch generation in plasma wakefield accelerators [1]. In this technique, a transversely propagating focused laser pulse ignites a quasi-stationary plasma column before the arrival of the plasma wake. This localized plasma density enhancement or optical "plasma torch" distorts the blowout during the arrival of the electron drive bunch and modifies the electron trajectories, resulting in controlled injection. By changing the gas density, and the laser pulse parameters such as beam waist and intensity, and by moving the focal point of the laser pulse, the shape of the plasma torch, and therefore the generated trailing beam, can be tuned easily. The proposed method is much more flexible and faster in generating gas density transitions when compared to hydrodynamics-based methods, and it accommodates experimentalists needs as it is a purely optical process and straightforward to implement.

KW - 3D PIC simulations

KW - particle bunch injection

KW - plasma wakefield acceleration (PWFA)

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U2 - 10.1016/j.nima.2016.02.027

DO - 10.1016/j.nima.2016.02.027

M3 - Article

JO - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

SN - 0168-9002

ER -