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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Laser acceleration of monoenergetic protons via a double layer emerging from an ultra-thin foil
TL;DR: In this article, theoretical and numerical studies of the acceleration of monoenergetic protons in a double layer formed by the laser irradiation of an ultra-thin film are presented.
Journal ArticleDOI
Laser plasma acceleration with a negatively chirped pulse: all-optical control over dark current in the blowout regime
TL;DR: In this paper, it was shown that the process of piston formation can be mitigated by using a broad-bandwidth (corresponding to a few-cycle transform-limited duration), negatively chirped pulse.
Journal ArticleDOI
Phase-space dynamics of ionization injection in plasma-based accelerators
Xinlu Xu,Jianfei Hua,Fei Li,Chaojie Zhang,Li-Tang Yan,Yi Du,Wenhui Huang,Huaibi Chen,Chuanxiang Tang,Wei Lu,Peicheng Yu,Weiming An,Chan Joshi,Warren Mori +13 more
TL;DR: In this article, the evolution of beam phase space in ionization injection into plasma wakefields is studied using theory and particle-in-cell simulations, and it is shown how ultralow emittance beams can be produced using ionisation injection methods.
Journal ArticleDOI
Tunable monoenergetic electron beams from independently controllable laser-wakefield acceleration and injection
Grigory Golovin,Shouyuan Chen,Nathan Powers,Cheng Liu,Sudeep Banerjee,Jian Zhang,Ming Zeng,Zheng-Ming Sheng,Donald P. Umstadter +8 more
TL;DR: In this paper, the authors report the results of experiments on laser-wakefield acceleration in a novel two-stage gas target with independently adjustable density and atomic-composition profiles, which led to the separation of the processes of electron injection and acceleration and permitted independent control of both.
Journal ArticleDOI
Optical Guiding in Meter-Scale Plasma Waveguides.
TL;DR: A new highly tunable technique for generating meter-scale low density plasma waveguides that can enable laser-driven electron acceleration to tens of GeV in a single stage is demonstrated.
References
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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.