Introductory remarks

Biref@HIBEF

• Felix Karbstein

A new X-ray polarization analysis method

• Willi Hippler

A dark-field setup for the measurement of light-by-light scattering with high- intensity lasers

• Fabian Schütze

Current status of the planned photon-photon scattering experiment at CALA

• Leonard Doyle

As outlined in the second-phase DFG proposal and our recent publication [1], efforts are ongoing at CALA to implement a photon-photon scattering experiment based on two counter-propagating pulses from the same laser source. The beamline for a single pulse has been fully commissioned, including a central hole in the beam for the collection of scattered signal. This currently allows studies of the background only (by residual gas and static scattering from chamber components). We will report on quantitative estimates for the background contributions expected in the full collision experiment. We will also give an update on the progress towards counter-propagating the second beam and related challenges.

Darkfield technique for measure quantum vacuum signal

• Pooyan Khademi

Phase transition analogues in laser collisions with a dark-field setup

• Lars Maiwald

Adaptive Heisenberg-Euler solver using dynamic mesh refinement

• Rasmus Rasche

Laser Wakefield Acceleration to GeV Electron Energies for the Breit-Wheeler Experiment

• Katinka von Grafenstein

The impact of laser focussing and radiation reaction on particle spectra from nonlinear Breit-Wheeler pair production

• Alexandra Eckey

Background Analysis and Pair Detection at the FOR2783/E3 Experiment

• Felipe Salgado

Simulation of dynamical pair creation in a strong electric field

• Yukiko Song

Dynamically assisted nonlinear Breit-Wheeler pair production in high-intensity laser fields

• Selym Villalba-Chavez

Unveiling the phase space of nonlinear Compton scattering

• Nikita Larin

Lab Tour & Discussion

Closing remarks