Colliding Pulse Injection of Polarized Electron Bunches in a Laser-Plasma Accelerator

Abstract

Highly polarized, multi-kiloampere-current electron bunches from compact laser-plasma accelerators are desired for numerous applications. Current proposals to produce these beams suffer from intrinsic limitations to the reproducibility, charge, beam shape and final polarization degree. In this Letter, we propose colliding pulse injection as a technique for the generation of highly polarized electron bunches from pre-polarized plasma sources. Using particle-in-cell simulations, we show that colliding pulse injection enables trapping and precise control over electron spin evolution, resulting in the generation of high-current (multi-kA) electron bunches with high degrees of polarization (up to 95 % for > 2 kA). Bayesian optimization is employed to optimize the multidimensional parameter space associated with colliding pulse injection to obtain percent-level energy spread, sub-micron normalized emittance electron bunches with 90 % polarization using 100-TW class laser systems.

arXiv comment5 pages, 4 figures

References in corpus (25)

• A spectral, quasi-cylindrical and dispersion-free Particle-In-Cell algorithm
• The role of polarized positrons and electrons in revealing fundamental interactions at the Linear Collider
• Precision Measurement of the Weak Charge of the Proton
• Automation and control of laser wakefield accelerators using Bayesian optimisation
• Ultrarelativistic electron beam polarization in single-shot interaction with an ultraintense laser pulse
• Modern and Future Colliders
• Spin polarization of electrons by ultraintense lasers
• Production of highly-polarized positrons using polarized electrons at MeV energies
• Observation of Parity Nonconservation in Moller Scattering
• Ultrafast Polarization of an Electron Beam in an Intense Bi-chromatic Laser Field
• Polarized laser-wakefield-accelerated kiloampere electron beams
• Polarized Beam Conditioning in Plasma Based Acceleration
• Polarized electron-beam acceleration driven by vortex laser pulses
• Spin-polarizing interferometric beam splitter for free electrons
• Spin-one-half particles in strong electromagnetic fields: spin effects and radiation reaction
• Accurate modeling of plasma acceleration with arbitrary order pseudo-spectral particle-in-cell methods
• Ultrahigh-density spin-polarized H and D observed via magnetization quantum beats
• Scaling laws for the (de-)polarization time of relativistic particle beams in strong fields
• Measurement of the neutron electric to magnetic form factor ratio at Q2 = 1.58 GeV2 using the reaction 3He(e,e'n)pp
• Highly spin-polarized deuterium atoms from the UV dissociation of Deuterium Iodide
• Bayesian optimization of laser-plasma accelerators assisted by reduced physical models
• XUV Spectral Compression by Four-Wave Mixing
• Polarized Proton Beams from Laser-induced Plasmas
• Helicity transfer in strong laser fields via the electron anomalous magnetic moment
• Control of electron beam polarization in the bubble regime of laser-wakefield acceleration

Cited by in corpus (4)

• Spin-polarized electron beam generation in the colliding-pulse injection scheme
• Generation of polarized electron beams through self-injection in the interaction of a laser with a pre-polarized plasma
• Plasma acceleration of polarized particle beams
• Intrinsic Nonlocality of Spin- and Polarization-Resolved Probabilities in Strong-Field Quantum Electrodynamics