0564815 - FZÚ 2023 RIV US eng J - Journal Article
Streeter, M.J.V. - Ma, Y. - Kettle, B. - Dann, S. J. D. - Gerstmayr, E. - Albert, F. - Bourgeois, N. - Cipiccia, S. - Cole, J.M. - Gonzalez, I.G. - Hussein, A.E. - Jaroszynski, D.A. - Falk, Kateřina - Krushelnick, K. - Lemos, N. - Lopes, N. C. - Lumsdon, C. - Lundh, O. - Mangles, S.P.D. - Najmudin, Z. - Rajeev, P. P. - Sandberg, R. - Shahzad, M. - Šmíd, M. - Spesyvtsev, R. - Symes, D.R. - Vieux, G. - Thomas, A.G.R.
Characterization of laser wakefield acceleration efficiency with octave spanning near-IR spectrum measurements.
PHYSICAL REVIEW ACCELERATORS AND BEAMS. Roč. 25, č. 10 (2022), č. článku 101302. ISSN 2469-9888. E-ISSN 2469-9888
R&D Projects: GA MŠMT EF16_027/0008215
EU Projects: European Commission(XE) 871124 - LASERLAB-EUROPE
Grant - others:MOBILITY FZU(XE) CZ.02.2.69/0.0/0.0/16_027/0008215
Institutional support: RVO:68378271
Keywords : laser-plasma wakefield accelerators * characterization of efficiency * octave spanning near-IR spectrum measurements
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 1.7, year: 2022
Method of publishing: Open access

We report on experimental measurements of energy transfer efficiencies in a GeV-class laser wakefield accelerator. Both the transfer of energy from the laser to the plasma wakefield, and from the plasma to the accelerated electron beam were diagnosed by simultaneous measurement of the deceleration of laser photons and the acceleration of electrons as a function of plasma length. The extraction efficiency, which we define as the ratio of the energy gained by the electron beam to the energy lost by the self-guided laser mode, was maximised at 19 ± 3% by tuning of the plasma density and length. The additional information provided by the octave-spanning laser spectrum measurement allows for independent optimisation of the plasma efficiency terms, which is required for the key goal of improving the overall efficiency of laser wakefield accelerators.
Permanent Link: https://hdl.handle.net/11104/0339511