Abstract The European Strategy Forum on Research Infrastructures (ESFRI) has selected in
2006 a proposal based on ultra-intense laser fields with intensities reaching up to 10 22–10 …

The Variable Energy Gamma facility of the Extreme Light Infrastructure-Nuclear Physics
center will deliver a gamma beam generated by the Compton scattering of laser and …

Electron-positron (⁠ e− e+⁠) pair plasma generation in the relativistic transparency regime
in a thin foil with a fixed thickness irradiated by two counter-propagating laser pulses is …

With the invention of chirped pulse amplification for lasers [1], the path towards high-power
laser systems all over the world has been paved. One of these, in particular, is the Extreme …

Along with the development of petawatt class laser systems, the interaction between high
power lasers and matter flourished an extensive research, with high-interest applications …

We report on the plans of a positron laboratory to be built at the Extreme Light Infrastructure-
Nuclear Physics (ELI-NP) facility. The slow e+ source is based on e−–e+ pair production in a …

In this work, the progress made by the positron group from ELI-NP in the design of a new
slow positron beam line is summarized. The rays of a brilliant gamma beam will be used to …

The design of the pulsing system for the slow e+ beam at ELI-NP is presented. It will deliver
narrow time width e+ pulses, achieved by a combination of prebuncher, chopper and …

One way to perform lifetime measurements at a DC positron beam is to pass positrons
through a pulsing device. The compressed e⁺ bunches are accelerated to a desired energy …

In e+ lifetime measurements with slow e+, incident e+ hit the target and a fraction of them is
backscattered. If the backscattered e+ reach back the accelerator they can be reflected by …