Timing measurement on the laser wakefield accelerated electrons via electro-optic spatial decoding

By introducing the EO spatial decoding technique, we succeeded clocking theelectron beams generated from LWFA. The Coulomb field front was discovered tohave a spherical structure due to plasma shielding and a new temporal mappingrelationship was developed. The injection position of the electron beams wasdiscovered to become closer to the drive laser pulse with increased plasma densityfor Helium gas in the self-injection regime. With superior data attainability andnon-destructive single-shot characteristics, this method could be a candidate aselectron timing monitor for LWFA experiments.光・量子ビーム科学合同シンポジウム201