Tomographic reconstruction algorithms for structured gas density profiles of the targets for laser wakefield acceleration

AbstractIonization-induced injection into a laser-driven wakefield is studied using 2½D OSIRIS simulations. A laser propagates into a gas mixture of 99.5% helium and 0.5% nitrogen with gas density of each rising linearly from 0 to a peak, after which these remain constant. Simulations show that the process can be controlled by varying the scale length of an up-ramp, the laser intensity, and the maximum plasma density. The injection process is controlled by the bubble radius decreasing as laser propagates up the density gradient and laser self-focusing in the flat-top region. A beam with a central energy of 350 MeV and an energy spread (FWHM) of 1.62% was obtained for an up-ramp length of 135 μm, a normalized vector potential of 2, and a density of 7 × 1018cm−3 (assuming a 0.8 μm wavelength laser).

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Complete characterization of laser wakefield acceleration

10.1117/12.890952 ◽

2011 ◽

Author(s):

Laszlo Veisz ◽

Alexander Buck ◽

Maria Nicolai ◽

Karl Schmid ◽

Chris M. S. Sears ◽

...

Keyword(s):

Complete Characterization ◽

Laser Wakefield Acceleration ◽

Wakefield Acceleration ◽

Laser Wakefield

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Variation in electron emission time in weakly nonlinear laser wakefield acceleration

Physical Review Accelerators and Beams ◽

10.1103/physrevaccelbeams.22.121301 ◽

2019 ◽

Vol 22 (12) ◽

Cited By ~ 1

Author(s):

K. Huang ◽

H. Kotaki ◽

M. Mori ◽

T. Esirkepov ◽

J. K. Koga ◽

...

Keyword(s):

Electron Emission ◽

Laser Wakefield Acceleration ◽

Weakly Nonlinear ◽

Wakefield Acceleration ◽

Laser Wakefield ◽

Emission Time

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Effect of halo on the stability of electron bunches in laser wakefield acceleration

EPL (Europhysics Letters) ◽

10.1209/0295-5075/113/34002 ◽

2016 ◽

Vol 113 (3) ◽

pp. 34002 ◽

Cited By ~ 6

Author(s):

N. Nakanii ◽

T. Hosokai ◽

K. Iwasa ◽

N. C. Pathak ◽

S. Masuda ◽

...

Keyword(s):

Laser Wakefield Acceleration ◽

Electron Bunches ◽

Wakefield Acceleration ◽

Laser Wakefield ◽

The Stability

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GENERATION OF GOOD-QUALITY RELATIVISTIC ELECTRON BEAM FROM SELF-MODULATED LASER WAKEFIELD ACCELERATION

International Journal of Modern Physics B ◽

10.1142/s0217979207042173 ◽

2007 ◽

Vol 21 (03n04) ◽

pp. 398-406 ◽

Cited By ~ 4

Author(s):

N. HAFZ ◽

G. H. KIM ◽

C. KIM ◽

H. SUK

Keyword(s):

Relativistic Electron ◽

Energy Spread ◽

Intense Laser ◽

Laser Wakefield Acceleration ◽

Nitrogen Gas ◽

Laser Plasma Interaction ◽

Wakefield Acceleration ◽

Laser Wakefield ◽

Central Energy ◽

A Charge

A relativistic electron bunch with a large charge (~2 nC ) was produced from a self-modulated laser wakefield acceleration configuration. In this experiment, an intense laser pulse with a peak power of 2 TW and a duration of 700 fs was focused in a nitrogen gas jet, and multi-MeV electrons were observed from the strong laser-plasma interaction. By passing the electrons through a small pinhole-like collimator of cone f/70, we observed a narrowing in the electron beam's energy spread. The beam clearly showed a small energy-spread behavior with a central energy of 4.8 MeV and a charge of 115 pC. The acceleration gradient was estimated to be about 20 GeV/m.

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