scholarly journals Producing multi-coloured bunches through beam-induced ionization injection in plasma wakefield accelerator

2019 ◽  
Vol 377 (2151) ◽  
pp. 20180184 ◽  
Author(s):  
N. Vafaei-Najafabadi ◽  
L. D. Amorim ◽  
E. Adli ◽  
W. An ◽  
C. I. Clarke ◽  
...  
Keyword(s):  
Experimental Evidence ◽  
Electron Beams ◽  
National Laboratory ◽  
Particle Beam ◽  
Wakefield Acceleration ◽  
Plasma Wakefield Accelerators ◽  
Plasma Wakefield Accelerator ◽  
Charge Field ◽  
Plasma Wakefield ◽  
Wakefield Accelerator

This paper discusses the properties of electron beams formed in plasma wakefield accelerators through ionization injection. In particular, the potential for generating a beam composed of co-located multi-colour beamlets is demonstrated in the case where the ionization is initiated by the evolving charge field of the drive beam itself. The physics of the processes of ionization and injection are explored through OSIRIS simulations. Experimental evidence showing similar features are presented from the data obtained in the E217 experiment at the FACET facility of the SLAC National Laboratory. This article is part of the Theo Murphy meeting issue ‘Directions in particle beam-driven plasma wakefield acceleration’.

scholarly journals Hybrid LWFA–PWFA staging as a beam energy and brightness transformer: conceptual design and simulations

2019 ◽  
Vol 377 (2151) ◽  
pp. 20180175 ◽  
Author(s):  
A. Martinez de la Ossa ◽  
R. W. Assmann ◽  
M. Bussmann ◽  
S. Corde ◽  
J. P. Couperus Cabadağ ◽  
...  
Keyword(s):  
Conceptual Design ◽  
Particle Beam ◽  
Proof Of Concept ◽  
Particle In Cell ◽  
Wakefield Acceleration ◽  
Plasma Wakefield Accelerator ◽  
Simulation Results ◽  
Set Up ◽  
Plasma Wakefield ◽  
Wakefield Accelerator

We present a conceptual design for a hybrid laser-driven plasma wakefield accelerator (LWFA) to beam-driven plasma wakefield accelerator (PWFA). In this set-up, the output beams from an LWFA stage are used as input beams of a new PWFA stage. In the PWFA stage, a new witness beam of largely increased quality can be produced and accelerated to higher energies. The feasibility and the potential of this concept is shown through exemplary particle-in-cell simulations. In addition, preliminary simulation results for a proof-of-concept experiment in Helmholtz-Zentrum Dresden-Rossendorf (Germany) are shown. This article is part of the Theo Murphy meeting issue ‘Directions in particle beam-driven plasma wakefield acceleration’.

scholarly journals Energy Enhancement and Energy Spread Compression of Electron Beams in a Hybrid Laser-Plasma Wakefield Accelerator

2019 ◽  
Vol 9 (12) ◽  
pp. 2561 ◽  
Author(s):  
Ying Wu ◽  
Changhai Yu ◽  
Zhiyong Qin ◽  
Wentao Wang ◽  
Zhijun Zhang ◽  
...  
Keyword(s):  
Laser Plasma ◽  
Electron Beams ◽  
Energy Levels ◽  
High Energy ◽  
Energy Spread ◽  
Particle In Cell ◽  
Wakefield Acceleration ◽  
Plasma Wakefield Accelerator ◽  
Plasma Wakefield ◽  
Wakefield Accelerator

We experimentally demonstrated the generation of narrow energy-spread electron beams with enhanced energy levels using a hybrid laser-plasma wakefield accelerator. An experiment featuring two-color electron beams showed that after the laser pump reached the depletion length, the laser-wakefield acceleration (LWFA) gradually evolved into the plasma-driven wakefield acceleration (PWFA), and thereafter, the PWFA dominated the electron acceleration. The energy spread of the electron beams was further improved by energy chirp compensation. Particle-in-cell simulations were performed to verify the experimental results. The generated monoenergetic high-energy electron beams are promising to upscale future accelerator systems and realize monoenergetic γ -ray sources.

scholarly journals Betatron radiation and emittance growth in plasma wakefield accelerators

2019 ◽  
Vol 377 (2151) ◽  
pp. 20180173 ◽  
Author(s):  
P. San Miguel Claveria ◽  
E. Adli ◽  
L. D. Amorim ◽  
W. An ◽  
C. E. Clayton ◽  
...  
Keyword(s):  
Experimental Tests ◽  
Particle Beam ◽  
The Past ◽  
Wakefield Acceleration ◽  
Emittance Growth ◽  
Plasma Wakefield Accelerators ◽  
Under Construction ◽  
Plasma Wakefield ◽  
New Facility ◽  
Present Simulation

Beam-driven plasma wakefield acceleration (PWFA) has demonstrated significant progress during the past two decades of research. The new Facility for Advanced Accelerator Experimental Tests (FACET) II, currently under construction, will provide 10 GeV electron beams with unprecedented parameters for the next generation of PWFA experiments. In the context of the FACET II facility, we present simulation results on expected betatron radiation and its potential application to diagnose emittance preservation and hosing instability in the upcoming PWFA experiments. This article is part of the Theo Murphy meeting issue ‘Directions in particle beam-driven plasma wakefield acceleration’.

scholarly journals Three electron beams from a laser-plasma wakefield accelerator and the energy apportioning question

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
X. Yang ◽  
E. Brunetti ◽  
D. Reboredo Gil ◽  
G. H. Welsh ◽  
F. Y. Li ◽  
...  
Keyword(s):  
Laser Plasma ◽  
Electron Beams ◽  
Plasma Wakefield Accelerator ◽  
Plasma Wakefield ◽  
Wakefield Accelerator

scholarly journals Beam emittance preservation using Gaussian density ramps in a beam-driven plasma wakefield accelerator

2019 ◽  
Vol 377 (2151) ◽  
pp. 20180181 ◽  
Author(s):  
M. D. Litos ◽  
R. Ariniello ◽  
C. E. Doss ◽  
K. Hunt-Stone ◽  
J. R. Cary
Keyword(s):  
Plasma Density ◽  
Beta Function ◽  
Plasma Source ◽  
Particle Beam ◽  
Transverse Beam ◽  
Beam Emittance ◽  
Gaussian Density ◽  
Plasma Wakefield Accelerator ◽  
Plasma Wakefield ◽  
Wakefield Accelerator

A current challenge that is facing the plasma wakefield accelerator (PWFA) community is transverse beam emittance preservation. This can be achieved by balancing the natural divergence of the beam against the strong focusing force provided by the PWFA plasma source in a scheme referred to as beam matching. One method to accomplish beam matching is through the gradual focusing of a beam with a plasma density ramp leading into the bulk plasma. Here, the beam dynamics in a Gaussian plasma density ramp are considered, and an empirical formula is identified that gives the ramp length and beam vacuum waist location needed to achieve near-perfect matching. The method uses only the beam vacuum waist beta function as an input. Numerical studies show that the Gaussian ramp focusing formula is robust for beta function demagnification factors spanning more than an order of magnitude with experimentally favourable tolerances for future PWFA research facilities. This article is part of the Theo Murphy meeting issue ‘Directions in particle beam-driven plasma wakefield acceleration’.

Narrow spread electron beams from a laser-plasma wakefield accelerator

2009 ◽  
Author(s):  
S. M. Wiggins ◽  
M. P. Anania ◽  
E. Brunetti ◽  
S. Cipiccia ◽  
B. Ersfeld ◽  
...  
Keyword(s):  
Laser Plasma ◽  
Electron Beams ◽  
Plasma Wakefield Accelerator ◽  
Plasma Wakefield ◽  
Wakefield Accelerator

A method of determining narrow energy spread electron beams from a laser plasma wakefield accelerator using undulator radiation

2009 ◽  
Vol 16 (9) ◽  
pp. 093102 ◽  
Author(s):  
J. G. Gallacher ◽  
M. P. Anania ◽  
E. Brunetti ◽  
F. Budde ◽  
A. Debus ◽  
...  
Keyword(s):  
Laser Plasma ◽  
Electron Beams ◽  
Energy Spread ◽  
Undulator Radiation ◽  
Plasma Wakefield Accelerator ◽  
Plasma Wakefield ◽  
Wakefield Accelerator

Stability of the Driving Bunch in the Plasma Wakefield Accelerator

1987 ◽  
Vol 15 (2) ◽  
pp. 192-198 ◽  
Author(s):  
J. J. Su ◽  
T. Katsouleas ◽  
J. M. Dawson ◽  
P. Chen ◽  
M. Jones ◽  
...  
Keyword(s):  
Plasma Wakefield Accelerator ◽  
Plasma Wakefield ◽  
Wakefield Accelerator
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