Laser Plasma Accelerators

Malka, Victor

doi:10.1007/978-3-319-00038-1_11

Cited by 16 publications

(7 citation statements)

References 105 publications

(101 reference statements)

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“…This acceleration process has been confirmed in a number of experiments by accelerating electrons to GeV energies [18][19][20]. In Plasma Wakefield Acceleration (PWFA) scheme, an intense, near light-speed electron beam is used instead of a laser pulse to excite plasma wave which has a phase velocity equal to the velocity of the beam.…”

Section: Introductionmentioning

confidence: 90%

Relativistic electron beam driven longitudinal wake-wave breaking in a cold plasma

et al. 2016

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Space-time evolution of relativistic electron beam driven wake-field in a cold, homogeneous plasma, is studied using 1D-fluid simulation techniques. It is observed that the wake wave gradually evolves and eventually breaks, exhibiting sharp spikes in the density profile and sawtooth like features in the electric field profile [1]. It is shown here that the excited wakefield is a longitudinal Akhiezer-Polovin mode [2] and its steepening (breaking) can be understood in terms of phase mixing of this mode, which arises because of relativistic mass variation effects. Further the phase mixing time (breaking time) is studied as a function of beam density and beam velocity and is found to follow the well known scaling presented in ref. [3].

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Section: Introductionmentioning

confidence: 90%

Relativistic electron beam driven longitudinal wake-wave breaking in a cold plasma

et al. 2016

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“…VEGA 2 has been previosly tested in different configurations depending on the focusing optics and targets used. One configuration is designed for under-dense laser-matter interaction where VEGA 2 is focused (F=130 cm , φ L =20 µm, Z r = 260 µm ) onto a low density gas-jet generating (via wake field mechanism [4][5][6][7][8]) electron beams with maximum energy up to 500 MeV and an X-ray betatron source with 10 keV characteristic critical energy [9][10][11][12]. The second configuration is designed for overcritical density laser-matter interaction where VEGA 2 is focused ((F=40 cm , φ L =7 µm, Z r = 25 µm) ) onto a 5 µm Al target generating (via TNSA mechanism [13][14][15][16]) a proton beam with a maximum energy of 9 MeV and average temperature of 2.5 MeV.…”

Section: Introductionmentioning

confidence: 99%

Generation of high energy laser-driven electron and proton sources with the 200 TW system VEGA 2 at the Centro de Laseres Pulsados

Volpe

Fedosejevs

Gatti

et al. 2019

High Pow Laser Sci Eng

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The Centro de Laseres Pulsados in Salamanca Spain has recently started operation phase and the first User access period on the 6 J 30 fs 200 TW system (VEGA 2) already started at the beginning of 2018. In this paper we report on two commissioning experiments recently performed on the VEGA 2 system in preparation for the user campaign. VEGA 2 system has been tested in different configurations depending on the focusing optics and targets used. One configuration (long focal length f=130 cm) is for under-dense laser-matter interaction where VEGA 2 is focused onto a low density gas-jet generating electron beams (via laser wake field acceleration mechanism) with maximum energy up to 500 MeV and an X-ray betatron source with a 10 keV critical energy. A second configuration (short focal length f=40 cm) is for over-dense laser-matter interaction where VEGA 2 is focused onto an 5 µm thick Al target generating a proton beam with a maximum energy of 10 MeV and average energy of 7-8 MeV and temperature of 2.5 MeV. In this paper we present preliminary experimental results.

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“…Laser Wakefield Acceleration (LWFA) [1][2][3][4] consists in the excitation of a plasma electron wave in the wake of an intense laser pulse propagating in an underdense plasma. The longitudinal electric field in this plasma wave can be of order of magnitudes higher than the accelerating fields in metallic cavities of conventional accelerators.…”

Section: Introductionmentioning

confidence: 99%

Efficient start-to-end 3D envelope modeling for two-stage laser wakefield acceleration experiments

Massimo

Beck

Dérouillat

et al. 2019

Plasma Phys. Control. Fusion

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The resolution of the system given by Maxwell's equations and Vlasov equation in three dimensions can describe all the phenomena of interest for laser wakefield acceleration, with few exceptions (e.g. ionization). Such arduous task can be numerically completed using Particle in Cell (PIC) codes, where the plasma is sampled by an ensemble of macroparticles and the electromagnetic fields are defined on a computational grid. However, the resulting three dimensional PIC simulations require substantial resources and often yield a larger amount of information than the one necessary to study a particular aspect of a phenomenon. Reduced models, i.e. models of the Maxwell-Vlasov system taking into account approximations and symmetries, are thus of fundamental importance for preliminary studies and parametric scans. In this work, the implementation of one of these models in the code Smilei, an envelope description of the laser-plasma interaction with cylindrical symmetry, is described.

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Laser Plasma Accelerators

Cited by 16 publications

References 105 publications

Relativistic electron beam driven longitudinal wake-wave breaking in a cold plasma

Relativistic electron beam driven longitudinal wake-wave breaking in a cold plasma

Generation of high energy laser-driven electron and proton sources with the 200 TW system VEGA 2 at the Centro de Laseres Pulsados

Efficient start-to-end 3D envelope modeling for two-stage laser wakefield acceleration experiments

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