Single-shot determination of spin-polarization for ultrarelativistic electron beams via nonlinear Compton scattering

Abstract

Impacts of spin-polarization of an ultrarelativistic electron beam head-on colliding with a strong laser pulse on emitted photon spectra and electron dynamics have been investigated in the quantum radiation regime. We simulate photon emissions quantum mechanically and electron dynamics semiclassically via taking spin-resolved radiation probabilities in the local constant field approximation. A small ellipticity of the laser field brings about an asymmetry in angle-resolved photon spectrum, which sensitively relies on the polarization of the electron beam. The asymmetry is particularly significant in high-energy photon spectra, and is employed for the polarization detection of a high-energy electron beam with extraordinary precision, e.g., better than 0.3\% for a few-GeV electron beam at a density of the scale of $10^{16}$ cm${}^{-3}$ with currently available strong laser fields. This method demonstrates for the first time a way of single-shot determination of polarization for ultrarelativistic electron beams via nonlinear Compton scattering. A similar method based on the asymmetry in the electron momentum distribution after the interaction due to spin-dependent radiation reaction is proposed as well.

References in corpus (26)

• Extremely high-intensity laser interactions with fundamental quantum systems
• The Quantum Jump Approach to Dissipative Dynamics in Quantum Optics
• All-optical Compton gamma-ray source
• Modelling Gamma Ray Emission and Pair Production in High-Intensity Laser-Matter Interactions
• QED cascades induced by circularly polarized laser fields
• The role of polarized positrons and electrons in revealing fundamental interactions at the Linear Collider
• Precision Measurement of the Weak Charge of the Proton
• Ultrarelativistic electron beam polarization in single-shot interaction with an ultraintense laser pulse
• Spin polarization of electrons by ultraintense lasers
• Efficient propagation of the polarization from laser photons to positrons through Compton scattering and electron-positron pair creation
• Emission and its back-reaction accompanying electron motion in relativistically strong and QED-strong pulsed laser fields
• Production of highly-polarized positrons using polarized electrons at MeV energies
• Testing numerical implementations of strong field electrodynamics
• Theory of Radiative Electron Polarization in Strong Laser Fields
• A high-precision polarimeter
• The Longitudinal Polarimeter at HERA
• A High-Precision Measurement of the Left-Right Z Boson Cross-Section Asymmetry
• Electron spin polarization in realistic trajectories around the magnetic node of two counter-propagating, circularly polarized, ultra-intense lasers
• SIMLA: Simulating laser-particle interactions via classical and quantum electrodynamics
• Spin-polarizing interferometric beam splitter for free electrons
• Upgraded photon calorimeter with integrating readout for Hall A Compton Polarimeter at Jefferson Lab
• Accurate measurement of the electron beam polarization in JLab Hall A using Compton polarimetry
• Electron (positron) beam polarization by Compton scattering on circularly polarized laser photons
• Radiative polarization of electrons in a strong laser wave
• Controlling electron spin dynamics in bichromatic Kapitza-Dirac scattering by the laser field polarization
• Precision Electron-Beam Polarimetry using Compton Scattering at 1 GeV

Cited by in corpus (13)

• Advances in QED with intense background fields
• Charged particle motion and radiation in strong electromagnetic fields
• Spin and polarisation dependent LCFA rates for nonlinear Compton and Breit-Wheeler processes
• Ultrafast Polarization of an Electron Beam in an Intense Bi-chromatic Laser Field
• Ultrarelativistic polarized positron jets via collision of electron and ultraintense laser beams
• Spin-polarization effects of an ultrarelativistic electron beam in an ultraintense two-color laser pulse
• Retrieving transient magnetic fields of ultrarelativistic laser plasma via ejected electron polarization
• High-energy gamma-photon polarization in nonlinear Breit-Wheeler pair production and gamma-polarimetry
• Generation of polarized particle beams at relativistic laser intensities
• Fully polarized nonlinear Breit-Wheeler pair production in pulsed plane waves
• Stochasticity in radiative polarization of ultrarelativistic electrons in an ultrastrong laser pulse
• Radiative polarization dynamics of relativistic electrons in an intense electromagnetic field
• Laser-driven lepton polarization in the quantum radiation-dominated reflection regime