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Demonstration of stable long-term operation of a kilohertz laser-plasma accelerator

Abstract : We report on the stable and continuous operation of a kilohertz laser-plasma accelerator. Electron bunches with 2.6 pC charge and 2.5 MeV peak energy were generated via injection and trapping in a downward plasma density ramp. This density transition was produced in a specially designed asymmetrically shocked gas jet. The reproducibility of the electron source was also assessed over a period of a week and found to be satisfactory with similar values of the beam charge and energy. Particle in cell simulations confirm the role of the shock and the density transition in the electron injection mechanism. These results show that the reproducibility and stability of the laser-plasma accelerator are greatly enhanced on the long-term scale when using a robust scheme for density gradient injection.
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Submitted on : Wednesday, June 10, 2020 - 2:23:14 AM
Last modification on : Friday, December 3, 2021 - 11:34:04 AM

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L. Rovige, J. Huijts, I. Andriyash, A. Vernier, V. Tomkus, et al.. Demonstration of stable long-term operation of a kilohertz laser-plasma accelerator. Phys.Rev.Accel.Beams, 2020, 23 (9), pp.093401. ⟨10.1103/PhysRevAccelBeams.23.093401⟩. ⟨hal-02863196⟩

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