Speaker
Description
The E-320 experiment at SLAC FACET-II aims to investigate Quantum Electrodynamics (QED) in the strong-field regime.
By colliding 10 GeV, high-quality electron beams with 10 TW NIR laser pulses it is aspired to probe the QED critical (Schwinger) intensity of 10E29 Wcm-2 in the electron rest frame. In this regime, characterized by X = E/Ecr>1, quantum corrections to classical synchrotron radiation become important and the probability for electron-positron pair production is no longer exponentially suppressed. Due to comparatively high stability and low energy spread in the FACET-II electron beam, E320 is able to contribute precision measurements of the emerging processes.
The experiment E-320 is to studying the transition from the perturbative (a0^2<<1) to the non-perturbative regime (a0^2>>1), characterized by the intensity parameter a0, while quantum effects are relevant (i.e., X ~ 0.1 ).
We report on the measurements of the red shift of the Compton edges and the transition to a quasi-continuous spectrum, as well
as current and future efforts towards the measurement of the Nonlinear-Breit-Wheeler process.
| Working group | WG6 |
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