The phase-lock dynamics of the laser wakefield acceleration with an intensity-decaying laser pulse

2014 ◽  
Vol 104 (9) ◽  
pp. 093510 ◽  
Author(s):  
Wentao Li ◽  
Jiansheng Liu ◽  
Wentao Wang ◽  
Zhijun Zhang ◽  
Qiang Chen ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Laser Wakefield Acceleration ◽  
Phase Lock ◽  
Wakefield Acceleration ◽  
Laser Wakefield

Enhanced betatron radiation by a modulating laser pulse in laser wakefield acceleration

2019 ◽  
Vol 19 (4) ◽  
pp. 464-469
Author(s):  
Seungwoo Lee ◽  
Han Sup Uhm ◽  
Tae Yeon Kang ◽  
Min Sup Hur ◽  
Hyyong Suk
Keyword(s):  
Laser Pulse ◽  
Laser Wakefield Acceleration ◽  
Wakefield Acceleration ◽  
Laser Wakefield

Experimental Results of Laser Wakefield Acceleration Using a Femtosecond Terawatt Laser Pulse

1999 ◽  
Vol 38 (Part 2, No. 8B) ◽  
pp. L967-L969 ◽  
Author(s):  
Masaki Kando ◽  
Hyeyoung Ahn ◽  
Hideki Dewa ◽  
Hideyuki Kotaki ◽  
Toru Ueda ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Experimental Results ◽  
Laser Wakefield Acceleration ◽  
Wakefield Acceleration ◽  
Laser Wakefield ◽  
Terawatt Laser

scholarly journals Coupling of longitudinal and transverse motion of accelerated electrons in laser wakefield acceleration

2004 ◽  
Vol 22 (4) ◽  
pp. 407-413 ◽  
Author(s):  
A.J.W. REITSMA ◽  
D.A. JAROSZYNSKI
Keyword(s):  
Laser Pulse ◽  
Group Velocity ◽  
Electron Bunch ◽  
Coupling Effect ◽  
Energy Spread ◽  
Transverse Motion ◽  
Laser Wakefield Acceleration ◽  
Wakefield Acceleration ◽  
Laser Wakefield ◽  
Wakefield Accelerator

The acceleration dynamics of electrons in a laser wakefield accelerator is discussed, in particular the coupling of longitudinal and transverse motion. This coupling effect is important for electrons injected with a velocity below the laser pulse group velocity. It is found that the electron bunch is adiabatically focused during the acceleration and that a finite bunch width contributes to bunch lengthening and growth of energy spread. These results indicate the importance of a small emittance for the injected electron bunch.

scholarly journals Improvement of Properties of Self-Injected and Accelerated Electron Bunch by Laser Pulse in Plasma, Using Pulse Precursor

2019 ◽  
Keyword(s):  
Laser Pulse ◽  
Laser Plasma ◽  
Electron Bunch ◽  
Energy Spread ◽  
Intense Laser ◽  
X Rays ◽  
Laser Wakefield Acceleration ◽  
Small Energy ◽  
Wakefield Acceleration ◽  
Laser Wakefield

The accelerating gradients in conventional linear accelerators are currently limited to ~100 MV/m. Plasma-based accelerators have the ability to sustain accelerating gradients which are several orders of magnitude greater than that obtained in conventional accelerators. Due to the rapid development of laser technology the laser-plasma-based accelerators are of great interest now. Over the past decade, successful experiments on laser wakefield acceleration of electrons in the plasma have confirmed the relevance of this acceleration. Evidently, the large accelerating gradients in the laser plasma accelerators allow to reduce the size and to cut the cost of accelerators. Another important advantage of the laser-plasma accelerators is that they can produce short electron bunches with high energy. The formation of electron bunches with small energy spread was demonstrated at intense laser–plasma interactions. Electron self-injection in the wake-bubble, generated by an intense laser pulse in underdense plasma, has been studied. With newly available compact laser technology one can produce 100 PW-class laser pulses with a single-cycle duration on the femtosecond timescale. With a fs intense laser one can produce a coherent X-ray pulse. Prof. T. Tajima suggested utilizing these coherent X-rays to drive the acceleration of particles. When such X-rays are injected into a crystal they interact with a metallic-density electron plasma and ideally suit for laser wakefield acceleration. In numerical simulation of authors, performed according to idea of Prof. T.Tajima, on wakefield excitation by a X-ray laser pulse in a metallic-density electron plasma the accelerating gradient of several TV/m has been obtained. It is important to form bunch with small energy spread and small size. The purpose of this paper is to show by the numerical simulation that some precursor-laser-pulse, moved before the main laser pulse, controls properties of the self-injected electron bunch and provides at certain conditions small energy spread and small size of self-injected and accelerated electron bunch.

Laser wakefield acceleration driven by a few-terawatt laser pulse in a sub-mm nitrogen gas jet

2020 ◽  
Vol 27 (11) ◽  
pp. 113102
Author(s):  
M.-W. Lin ◽  
T.-Y. Chu ◽  
Y.-Z. Chen ◽  
D. K. Tran ◽  
H.-H. Chu ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Gas Jet ◽  
Laser Wakefield Acceleration ◽  
Nitrogen Gas ◽  
Wakefield Acceleration ◽  
Laser Wakefield ◽  
Terawatt Laser

Multiple quasi-monoenergetic electron beams from laser-wakefield acceleration with spatially structured laser pulse

2015 ◽  
Vol 22 (8) ◽  
pp. 083102 ◽  
Author(s):  
Y. Ma ◽  
L. M. Chen ◽  
M. H. Li ◽  
Y. F. Li ◽  
J. G. Wang ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Electron Beams ◽  
Laser Wakefield Acceleration ◽  
Monoenergetic Electron ◽  
Wakefield Acceleration ◽  
Laser Wakefield

scholarly journals Generation of monoenergetic proton beams by a combined scheme with an overdense hydrocarbon target and an underdense plasma gas irradiated by ultra-intense laser pulse

2014 ◽  
Vol 32 (4) ◽  
pp. 583-589 ◽  
Author(s):  
Weipeng Yao ◽  
Baiwen Li ◽  
Lihua Cao ◽  
Fanglan Zheng ◽  
Taiwu Huang ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Intense Laser ◽  
Pure Hydrogen ◽  
Intense Laser Pulse ◽  
Laser Wakefield Acceleration ◽  
Proton Beams ◽  
Acceleration Mechanism ◽  
Wakefield Acceleration ◽  
Laser Wakefield ◽  
Underdense Plasma

AbstractAn optimization scheme for the generation of monoenergetic proton beams by using an overdense hydrocarbon target, followed by an underdense plasma gas, irradiated by an ultra-intense laser pulse is presented. The scheme is based on a combination of a radiation pressure acceleration mechanism and a laser wakefield acceleration mechanism, and is verified by one-dimensional relativistic particle-in-cell (1D PIC) simulations. As compared to the pure hydrogen (H) target, protons in the hydrocarbon target can be pre-accelerated to higher energy and compressed in space due to the existence of the heavy carbon atoms, which provides a better injection process for the successive laser wakefield acceleration in the underdense plasma gas, resulting in the generation of a monoenergetic, tens-of-GeV proton beam. Additionally, for the first time, it is found that the use of the hydrocarbon target can reduce the requirement for laser intensity to generate proton beams with the same energy in this combined scheme, as compared to the use of the pure H target.

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