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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Shielded radiography with gamma rays from laser-accelerated electrons in a self-trapping regime
TL;DR: Very efficient generation of a high charge electron beam by a laser pulse propagating in a self-trapping mode in near-critical density plasma makes it possible to produce a high yield of gamma rays for radiography of samples located deep in a dense medium.
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Characteristics of the Shock Structure for Transition Injection in Laser Wakefield Acceleration
TL;DR: In this paper, the characteristics of the plasma density generated in a gas medium by shock was experimentally measured and an adjustment method of these parameters was developed to determine the charge and energy of the electron beam in the transition injection scheme.
Journal ArticleDOI
Optical control of transverse motion of ionization injected electrons in a laser plasma accelerator
Feng Jie,Yifei Li,Jinguang Wang,Dazhang Li,Changqing Zhu,Junhao Tan,Xiaotao Geng,Feng Liu,Liming Chen +8 more
TL;DR: In this article, an all-optical method for controlling the transverse motion of an ionization injected electron beam in a laser plasma accelerator by using the transversely asymmetrical plasma wakefield was demonstrated.
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Bright synchrotron radiation from relativistic self-trapping of a short laser pulse in near-critical density plasma
TL;DR: In this article, a short laser pulse propagates in relativistic self-trapping mode, which enables effective conversion of laser energy to the accelerated electrons, which provides a large amount of betatron radiation.
Injection of Tunnel Ionized Electrons into Laser-Produced Wakes
TL;DR: In the Dissertation Injection of Tunnel Ionized Electrons into Laser-Produced Wakes as mentioned in this paper, the authors proposed a method to inject tunnel ionized electrons into laser-produced wake.
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Laser Electron Accelerator
Toshiki Tajima,John M. Dawson +1 more
TL;DR: In this paper, an intense electromagnetic pulse can create a weak of plasma oscillations through the action of the nonlinear ponderomotive force, and electrons trapped in the wake can be accelerated to high energy.
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A laser-plasma accelerator producing monoenergetic electron beams
Jérôme Faure,Y. Glinec,Alexander Pukhov,Sergey Kiselev,Sergey Gordienko,Erik Lefebvre,Jean-Philippe Rousseau,Frédéric Burgy,Victor Malka +8 more
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.
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High-quality electron beams from a laser wakefield accelerator using plasma-channel guiding
C. G. R. Geddes,C. G. R. Geddes,Cs. Toth,van J Jeroen Tilborg,van J Jeroen Tilborg,Eric Esarey,Carl Schroeder,David L. Bruhwiler,Chet Nieter,John R. Cary,Wim Leemans +10 more
TL;DR: A laser accelerator that produces electron beams with an energy spread of a few per cent, low emittance and increased energy (more than 109 electrons above 80 MeV) and opens the way for compact and tunable high-brightness sources of electrons and radiation.