A High-Flux Electron Detector System to Measure Non-linear Compton Scattering at LUXE

TL;DR

This paper presents a novel high-flux electron detector system for measuring non-linear Compton scattering at high-intensity laser facilities, enabling detailed exploration of non-perturbative QED phenomena.

Contribution

It introduces a new segmented Cherenkov detector design optimized for high-flux electron detection in strong-field QED experiments.

Findings

Preliminary results demonstrate effective electron energy spectrum reconstruction.

The detector system shows promise for capturing high-flux Compton electrons.

Methods developed improve measurement accuracy in non-perturbative QED studies.

Abstract

Recently, advancements in high-intensity laser technology have enabled the exploration of non-perturbative Quantum Electrodynamics (QED) in strong-field regimes. Notable aspects include non-linear Compton scattering and Breit-Wheeler pair production, observable when colliding high-intensity laser pulses and relativistic electron beams. The LUXE experiment at DESY and the E-320 experiment at SLAC aim to study these phenomena by measuring the created high-flux Compton electrons and photons. We propose a novel detector system featuring a segmented gas-filled Cherenkov detector with a scintillator screen and camera setup, designed to efficiently detect high-flux Compton electrons. Preliminary results from E-320 measurement campaigns demonstrate methods for reconstructing electron energy spectra, aiming to reveal crucial features of non-perturbative QED.