Matter and Radiation at Extremes, Volume. 6, Issue 1, 015401(2021)
The L4n laser beamline of the P3-installation: Towards high-repetition rate high-energy density physics at ELI-Beamlines
Figures & Tables(13)
Fig. 1. The E3 experimental hall for plasma physics and beam configurations. The L4n pulse (1.9 kJ, 0.5 ns–10 ns, 1053 nm) is shown in pink. Three other beams will also be available in E3: L4f (1.5 kJ, 150 fs, 1053 nm), L4p (available in 2022) (150 J–400 J, 150 fs to 150 ps, 1053 nm), and L3 (30 J, 30 fs, 800 nm, 10 Hz).
Fig. 2. Schematic of the L4 ATON laser in the high-power non-CPA configuration.
Fig. 3. Layout of the compressor imaging system (CIS) with its optical scheme in the chirped pulse beamline (a) and with the M4.5 mirror position defined from Zemax OpticStudio simulations (b).
Fig. 4. (a) Design of the L4n beamline in the E3 experimental hall. The L4n beam is shown in pink up to the frequency-doubling KDP crystal. The converted 2
Fig. 5. (a) Diffraction-limited focal spot with 0.2° lens tilt and 1 W input power in a square beam. (b) Focal spot with 0.42° lens tilt and 1 W input power in a square beam.
Fig. 6. Calculated KDP crystal conversion efficiency to second harmonic with 1 kJ as energy input.
Fig. 7. (a) Focal spot intensity profile (arbitrary units) simulated using wave front data from one of the phase plates. (b) Horizontal slice of the intensity profile.
Fig. 8. The left panels show laser pulse temporal profiles providing access to the Hugoniot adiabat and far-from-Hugoniot states. The right panels show the corresponding trajectories in the phase plane
Fig. 9. Configurations for multibeam experiments with L4n (green) and L3 (yellow) pulses: (a) long-focal-length (5 m) configuration in which L3 is focused in a gas jet and generates relativistic electrons and broadband hard X-rays at an angle of 112° with respect to the L4n beam; (b) short-focal-length (
Table 1. Overview of the current performance of major high-energy laser facilities in a long-pulse configuration listing the name of the installation, the operating entity, the laser wavelength in nanometers, the maximum energy available per shot, and the operating repetition rate.
7 View tableView in ArticleTable 1. Overview of the current performance of major high-energy laser facilities in a long-pulse configuration listing the name of the installation, the operating entity, the laser wavelength in nanometers, the maximum energy available per shot, and the operating repetition rate.
7 Installation Operating facility λ (nm) Maximum energy (long pulse) Repetition rate NIF LLNL (Livermore, USA) 1053 2.1 MJ (3ω, 3 ns–15 ns) Every 8 h LMJ CEA (Le Barp, France) 1053 1.4 MJ (3ω, 3 ns–15 ns) Every 8 h Omega EP LLE (Rochester, USA) 1053 30 kJ (3ω, 1 ns–3 ns) Every 90 min SG-II-UP SIOM (Shanghai, China) 1053 24 kJ (3ω, 3 ns) Every 3 h Gekko XII ILE (Osaka, Japan) 1064 10 kJ (2ω, 1 ns) Every 30 min Orion AWE (Aldermaston, UK) 1053 5 kJ (3ω, 1 ns) Every 45 min L4n ELI-Beamlines (Prague, Czech Republic) 1053 1.2 kJ ( 2ω , 1 ns–5 ns) 1 shot/min VULCAN CLF, STFC (Oxford, UK) 1053 1 kJ (2ω, 1 ns–10 ns) 2 shots/day PALS IoP (Prague, Czech Republic) 1315 200 J (3ω, 250 ps) Every 25 min LULI 2000 LULI, CEA (Paris, France) 1053 750 J (2ω, 1.5 ns) Every 90 min MEC SLAC (Menlo Park, USA) 1053 60 J (2ω, 10 ns) Every 7 min HIBEF Eu-XFEL (Schenefeld, Germany) 1053 100 J (1ω, 10 ns) 10 Hz
Table 2. L4n laser specifications.
View tableView in ArticleTable 2. L4n laser specifications.
Beam dimensions 32 × 32 cm2 Central wavelength λ = 1053.2 nm Energy 1.9 kJ Pulse duration τ = 0.1 ns–10 ns Strehl ratio ∼0.5 Pointing stability <10 µrad Beam shape Square super-Gaussian (order ∼20)
Table 3. Requirements on the nominal L4n design.
View tableView in ArticleTable 3. Requirements on the nominal L4n design.
Requirement Specification Maximum energy 1ω 1.9 kJ Maximum energy 2ω 1 kJ Beam dimensions initial phase 25 cm diameter Maximum energy 1ω subaperture beam 1 kJ Conversion efficiency Best effort >60% Best spot diameter 50 µm Spot diameter after conditioning >300 µm Nominal focus position ±2 mm lateral/±5 mm longitudinal Synchronization 20 ps Pointing stability <5 µrad on KDP crystal Maximum repetition rate at 2ω 1 shot/min
Table 4. Main specifications of frequency-doubling KDP crystal.
View tableView in ArticleTable 4. Main specifications of frequency-doubling KDP crystal.
Clear aperture 284 ± 1 mm Phase matching angle 59 ± 0.2° Damage threshold >10 J/cm2 at 1 ns
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N. Jourdain, U. Chaulagain, M. Havlík, D. Kramer, D. Kumar, I. Majerová, V. T. Tikhonchuk, G. Korn, S. Weber. The L4n laser beamline of the P3-installation: Towards high-repetition rate high-energy density physics at ELI-Beamlines[J]. Matter and Radiation at Extremes, 2021, 6(1): 015401
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Received: Jul. 17, 2020
Accepted: Oct. 24, 2020
Published Online: Apr. 22, 2021
The Author Email: Weber S. (stefan.weber@eli-beams.eu)
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