High-quality GeV-scale electron bunches with the Resonant Multi-Pulse Ionization Injection

Abstract

Recently a new injection scheme for Laser Wake Field Acceleration, employing a single 100-TW-class laser system, has been proposed. In the Resonant Multi-Pulse Ionization injection (ReMPI) a resonant train of pulses drives a large amplitude plasma wave that traps electrons extracted from the plasma by further ionization of a high-Z dopant (Argon in the present paper). While the pulses of the driver train have intensity below the threshold for the dopant's ionization, the properly delayed and frequency doubled (or more) ionization pulse possesses an electric field large enough to extract electrons, though its normalized amplitude is well below unity. In this paper we will report on numerical simulations results aimed at the generation of GeV-scale bunches with normalized emittance and rms energy below 80 nm × rad and 0.5 %, respectively. Analytical consideration of the FEL performance for a 1.3 GeV bunch will be also reported.

Free Electron Laser Performance within the EuPRAXIA Facility

“…This scheme includes two plasma stages: the laser plasma injector to produce electrons with beam energy of 150 MeV and a laser plasma acceleration stage to have particles with the final energy of 5 GeV. In particular, the beam distribution under study and denoted hereafter as Maynard-5 is injected with the resonant multi-pulse ionization technique [25,26] and accelerated through a single stage in the quasilinear regime [27,28]. Radio frequency injector and particle-driven plasma acceleration stage.…”

Laser wakefield acceleration of electrons using Bessel–Gauss doughnut beams for accelerating beam guiding

“…Laser-plasma interaction of high-peak-power femtosecond (fs) and kilohertz-class lasers with a wide range of applications is an exciting area of research (Malka et al 2008;Rovige et al 2020;Hidding et al 2023). The propagation of the laser pulses over a long distance and the ability to create a plasma channel and control its length are significant subjects of research on laser wakefield accelerators (LWFAs) (Andreev et al 1998;Tomassini et al 2018;Palastro et al 2020). The energy of accelerated electrons depends on the laser-plasma interaction length (which is proportional to the Rayleigh length).…”

Resonance excitation of nonlinear wake field by non-uniform train of laser pulses

“…The researchers examined the excitation of the wake by a series of low-energy laser pulses rather than by a single high-energy pulse [11][12][13][14]. Trains of laser pulses were used to demonstrate resonant excitation of plasma waves.…”

“…Hooker proposed MP-LWFA as a resonant procedure for excitation of wakefields in 2014 [11]. There is a new bunch injection scheme in which electrons extracted by ionization are trapped by a plasma wave of large amplitude driven by a train of resonant ultrashort pulses [12,13]. MP-LWFA has recently been proposed as a means of overcoming the dephasing limit in laser wakefield acceleration.…”