Generating multi-GeV electron bunches using single stage laser wakefield acceleration in a 3D nonlinear regime
Wei Lu,Michail Tzoufras,C. Joshi,Frank Tsung,Warren Mori,Jorge Vieira,Ricardo Fonseca,Luis O. Silva +7 more
TLDR
In this article, a phenomenological framework for laser wakefield acceleration (LWFA) in the 3D nonlinear regime was developed, in which the plasma electrons are expelled by the radiation pressure of a short pulse laser, leading to nearly complete blowout.Abstract:
The extraordinary ability of space-charge waves in plasmas to accelerate charged particles at gradients that are orders of magnitude greater than in current accelerators has been well documented. We develop a phenomenological framework for laser wakefield acceleration (LWFA) in the 3D nonlinear regime, in which the plasma electrons are expelled by the radiation pressure of a short pulse laser, leading to nearly complete blowout. Our theory provides a recipe for designing a LWFA for given laser and plasma parameters and estimates the number and the energy of the accelerated electrons whether self-injected or externally injected. These formulas apply for self-guided as well as externally guided pulses (e.g. by plasma channels). We demonstrate our results by presenting a sample particle-in-cell (PIC) simulation of a $30\text{ }\mathrm{fs}$, 200 TW laser interacting with a 0.75 cm long plasma with density $1.5\ifmmode\times\else\texttimes\fi{}{10}^{18}\text{ }\text{ }{\mathrm{cm}}^{\ensuremath{-}3}$ to produce an ultrashort (10 fs) monoenergetic bunch of self-injected electrons at 1.5 GeV with 0.3 nC of charge. For future higher-energy accelerator applications, we propose a parameter space, which is distinct from that described by Gordienko and Pukhov [Phys. Plasmas 12, 043109 (2005)] in that it involves lower plasma densities and wider spot sizes while keeping the intensity relatively constant. We find that this helps increase the output electron beam energy while keeping the efficiency high.read more
Citations
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Control of electron beam energy-spread by beam loading effects in a laser-plasma accelerator
Guangyu Li,Quratul Ain,Song Li,Muhammad Saeed,Daniel Papp,Christos Kamperidis,Nasr A Mohamed Hafz +6 more
Journal ArticleDOI
Study of electron acceleration and x-ray radiation as a function of plasma density in capillary-guided laser wakefield accelerators
J. Ju,Kristoffer Svensson,H. E. Ferrari,A. Döpp,Guillaume Genoud,F. Wojda,Matthias Burza,Anders Persson,Olle Lundh,Claes-Göran Wahlström,Brigitte Cros +10 more
TL;DR: In this paper, dielectric capillary tubes were employed to assist the laser to keep self-focused over a long distance by collecting the laser energy around its central focal spot.
Proceedings ArticleDOI
New developments in the simulation of advanced accelerator concepts
David L. Bruhwiler,John R. Cary,Benjamin M. Cowan,Kevin Paul,Cameron Geddes,Paul Mullowney,Peter Messmer,Eric Esarey,Estelle Cormier-Michel,Wim Leemans,Jean-Luc Vay +10 more
TL;DR: In this article, an overview of some computational algorithms for laser-plasma concepts and high-brightness photocathode electron sources is presented, as well as important on-going efforts to include relevant additional physics that has been previously neglected.
Temporal dynamics of the longitudinal bunch profile in a laser wakefield accelerator
TL;DR: In this article, a single-shot measurement technique was used to study the temporal evolution of the electron bunch profile as a function of the acceleration distance and the plasma density, and the results showed that after electron dephasing a second electron bunch can be injected in the first or subsequent plasma periods.
Journal ArticleDOI
Tuning the electron energy by controlling the density perturbation position in laser plasma accelerators
P. Brijesh,C. Thaury,K. Ta Phuoc,Sebastien Corde,G. Lambert,Victor Malka,Stuart Mangles,M. S. Bloom,Stefan Kneip +8 more
TL;DR: In this article, a density perturbation produced in an underdense plasma was used to improve the quality of electron bunches produced in the laser-plasma wakefield acceleration scheme.
References
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Laser Electron Accelerator
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TL;DR: It is demonstrated that this randomization of electrons in phase space can be suppressed and that the quality of the electron beams can be dramatically enhanced.
Journal ArticleDOI
High-quality electron beams from a laser wakefield accelerator using plasma-channel guiding
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