External injection and acceleration of electron bunch in front of the plasma wakefield produced by a periodic chirped laser pulse

2017 ◽  
Vol 24 (1) ◽  
pp. 013110 ◽  
Author(s):  
Esmaeil Eslami ◽  
Saeedeh Afhami
Keyword(s):  
Laser Pulse ◽  
Electron Bunch ◽  
External Injection ◽  
Plasma Wakefield ◽  
Chirped Laser Pulse

scholarly journals CONTROL OF CHARACTERISTICS OF SELF-INJECTED AND ACCELERATED ELECTRON BUNCH IN PLASMA BY LASER PULSE SHAPING ON RADIUS, INTENSITY AND SHAPE

2019 ◽  
pp. 39-42
Author(s):  
V.I. Maslov ◽  
D.S. Bondar ◽  
V. Grigorencko ◽  
I.P. Levchuk ◽  
I.N. Onishchenko
Keyword(s):  
Laser Pulse ◽  
Pulse Shaping ◽  
Electron Bunch ◽  
The Self ◽  
Energy Spread ◽  
Small Energy ◽  
Laser Acceleration ◽  
Laser Pulse Shaping ◽  
Plasma Wakefield

At the laser acceleration of self-injected electron bunch by plasma wakefield it is important to form bunch with small energy spread and small size. It has been shown that laser-pulse shaping on radius, intensity and shape controls characteristics of the self-injected electron bunch and provides at certain shaping small energy spread and small size of self-injected and accelerated electron bunch.

scholarly journals Electron bunch injection at an angle into a laser wakefield

2009 ◽  
Vol 27 (1) ◽  
pp. 69-77 ◽  
Author(s):  
M.J.H. Luttikhof ◽  
A.G. Khachatryan ◽  
F.A. van Goor ◽  
K.-J. Boller ◽  
P. Mora
Keyword(s):  
Laser Pulse ◽  
Electron Bunch ◽  
Extensive Study ◽  
Energy Spread ◽  
Pulse Dynamics ◽  
Electron Bunches ◽  
Vacuum Plasma ◽  
Laser Wakefield ◽  
External Injection ◽  
Wakefield Accelerator

AbstractExternal injection of electron bunches longer than the plasma wavelength in a laser wakefield accelerator can lead to the generation of femtosecond ultra relativistic bunches with a couple of percent energy spread. Extensive study has been done on external electron bunch (e.g., one generated by a photo-cathode RF linac) injection in a laser wakefield for different configurations.In this paper, we investigate a new way of external injection where the electron bunch is injected at a small angle into the wakefield. This way one can avoid the ponderomotive scattering as well as the vacuum-plasma transition region, which tend to destroy the injected bunch. In our simulations, the effect of the laser pulse dynamics is also taken into account. It is shown that injection at an angle can provide compressed and accelerated electron bunches with less than 2% energy spread. Another advantage of this scheme is that it has less stringent requirements in terms of the size of the injected bunch and there is the potential to trap more charge.

Modulation of the Amplitude and Spatial Structure of the Plasma Wakefield With Super-Gaussian Chirped Laser Pulse

2020 ◽  
Vol 48 (4) ◽  
pp. 894-901
Author(s):  
Zheng-Wei Yao ◽  
Li-Hong Cheng ◽  
Xiao-Bo Zhang ◽  
Rong-An Tang ◽  
Ju-Kui Xue
Keyword(s):  
Laser Pulse ◽  
Spatial Structure ◽  
Plasma Wakefield ◽  
Chirped Laser Pulse

Quasimonoenergetic GeV electron bunch generation by the wake-field of the chirped laser pulse

2010 ◽  
Vol 17 (3) ◽  
pp. 033103 ◽  
Author(s):  
Saeed Mirzanejhad ◽  
Farshad Sohbatzadeh ◽  
Mehdi Asri ◽  
Kobra Ghanbari
Keyword(s):  
Laser Pulse ◽  
Electron Bunch ◽  
Wake Field ◽  
Chirped Laser Pulse

scholarly journals Radial density profile and stability of capillary discharge plasma waveguides of lengths up to 40 cm

2021 ◽  
Vol 9 ◽  
Author(s):  
M. Turner ◽  
A. J. Gonsalves ◽  
S. S. Bulanov ◽  
C. Benedetti ◽  
N. A. Bobrova ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Electron Density ◽  
Density Profile ◽  
Pulse Propagation ◽  
Spot Size ◽  
Capillary Discharge ◽  
Electron Density Profile ◽  
Plasma Waveguide ◽  
Wakefield Acceleration ◽  
Plasma Wakefield

Abstract We measured the parameter reproducibility and radial electron density profile of capillary discharge waveguides with diameters of 650 $\mathrm{\mu} \mathrm{m}$ to 2 mm and lengths of 9 to 40 cm. To the best of the authors’ knowledge, 40 cm is the longest discharge capillary plasma waveguide to date. This length is important for $\ge$ 10 GeV electron energy gain in a single laser-driven plasma wakefield acceleration stage. Evaluation of waveguide parameter variations showed that their focusing strength was stable and reproducible to $<0.2$ % and their average on-axis plasma electron density to $<1$ %. These variations explain only a small fraction of laser-driven plasma wakefield acceleration electron bunch variations observed in experiments to date. Measurements of laser pulse centroid oscillations revealed that the radial channel profile rises faster than parabolic and is in excellent agreement with magnetohydrodynamic simulation results. We show that the effects of non-parabolic contributions on Gaussian pulse propagation were negligible when the pulse was approximately matched to the channel. However, they affected pulse propagation for a non-matched configuration in which the waveguide was used as a plasma telescope to change the focused laser pulse spot size.

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