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

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 Laser wakefield acceleration in narrow plasma-filled channels

2001 ◽  
Vol 19 (2) ◽  
pp. 219-222 ◽  
Author(s):  
K.V. LOTOV
Keyword(s):  
Laser Pulse ◽  
Electron Energy ◽  
Peak Power ◽  
Maximum Energy ◽  
Energy Gain ◽  
Laser Wakefield Acceleration ◽  
Wakefield Acceleration ◽  
Laser Wakefield ◽  
Terawatt Laser ◽  
Accelerated Particles

The wakefield acceleration driven by a single laser pulse in a narrow plasma-filled solid waveguide is considered. Parameters of the waveguide which provide the maximum energy gain of accelerated particles at a given length and peak power of the driver are found in the approximation of a relativistically weak driver. The obtained formulas are illustrated by calculating the electron energy gain achievable with the terawatt laser of Utsunomiya University.

GENERATION OF GOOD-QUALITY RELATIVISTIC ELECTRON BEAM FROM SELF-MODULATED LASER WAKEFIELD ACCELERATION

2007 ◽  
Vol 21 (03n04) ◽  
pp. 398-406 ◽  
Author(s):  
N. HAFZ ◽  
G. H. KIM ◽  
C. KIM ◽  
H. SUK
Keyword(s):  
Relativistic Electron ◽  
Energy Spread ◽  
Intense Laser ◽  
Laser Wakefield Acceleration ◽  
Nitrogen Gas ◽  
Laser Plasma Interaction ◽  
Wakefield Acceleration ◽  
Laser Wakefield ◽  
Central Energy ◽  
A Charge

A relativistic electron bunch with a large charge (~2 nC ) was produced from a self-modulated laser wakefield acceleration configuration. In this experiment, an intense laser pulse with a peak power of 2 TW and a duration of 700 fs was focused in a nitrogen gas jet, and multi-MeV electrons were observed from the strong laser-plasma interaction. By passing the electrons through a small pinhole-like collimator of cone f/70, we observed a narrowing in the electron beam's energy spread. The beam clearly showed a small energy-spread behavior with a central energy of 4.8 MeV and a charge of 115 pC. The acceleration gradient was estimated to be about 20 GeV/m.

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

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

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.

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