Aerial view of the European XFEL accelerator complex, with the LUXE

Energy level scheme of Pr 3+ in glasses.

a) Energy spectra of the γ ray photons at t=225 fs (blue curve)

PDF) LUXE: A new experiment to study non-perturbative QED

Energy level scheme of Pr 3+ in glasses.

Aerial view of the European XFEL accelerator complex, with the LUXE

PDF) LUXE: A new experiment to study non-perturbative QED

Expected positron rate for the different LUXE running modes and phases.

Diagram of our proposed scheme for γ ray production. (a) Intense laser

Aerial view of the European XFEL accelerator complex, with the LUXE

Aerial view of the European XFEL accelerator complex, with the LUXE

PDF) LUXE: A new experiment to study non-perturbative QED

Aerial view of the European XFEL accelerator complex, with the LUXE

Diagram of our proposed scheme for γ ray production. (a) Intense laser

a) Energy of the quasimonoenergetic electron peak as a function of the

Expected positron rate for the different LUXE running modes and phases.