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
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A complementary compact laser based neutron source
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TL;DR: In this paper, the authors focus on the applications in cultural heritage studies as well as on the complementary role that such a source can have in the framework of large facilities devoted to radiation production.
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Visualization of plasma bubble accelerators using Frequency-Domain Shadowgraphy
P. Dong,S. A. Reed,S. A. Yi,Serguei Y. Kalmykov,Gennady Shvets,Michael C. Downer,Nicholas H. Matlis,Wim Leemans,C. McGuffey,Stepan Bulanov,Vladimir Chvykov,Galina Kalintchenko,Karl Krushelnick,Anatoly Maksimchuk,Takeshi Matsuoka,Alexander Thomas,V. Yanovsky +16 more
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Announcement: The 2020 James Clerk Maxwell Prize for Plasma Physics
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Micro-size picosecond-duration fast neutron source driven by a laser–plasma wakefield electron accelerator
D.To'raboyeva,Xilong Yuan +1 more
TL;DR: In this paper , a micro-size ultra-short pulsed fast neutron source was presented by a table-top laser-plasma wakefield electron accelerator driving a photofission reaction in a thin metal converter.
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Laser Electron Accelerator
Toshiki Tajima,John M. Dawson +1 more
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A laser-plasma accelerator producing monoenergetic electron beams
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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.
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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.