Speaker
Description
This contribution features the user facility PIPE which is a
permanent end station at the Variable Polarization XUV beamline P04
at PETRA III / DESY for the study of photon interactions with
matter in the gas phase (charged and neutral atoms, molecules,
clusters). The setup provides flexible state-of-the-art
experimental equipment such as specialized ion sources, an ion
trap, and particle spectrometers with multiple coincidence
capabilities. Since the start of operation in 2013, already several
research highlights have been published, e.g., the quantitative
study of a genuine four-electron process induced by resonant inner
shell excitation of an atomic ion [Phys. Rev. Lett. 114, 013002
(2015)], the observation of a two-particle interference of electron
pairs in a molecule [Phys. Rev. Lett. 117, 083002 (2016)], the
imaging of the square of a correlated two-electron wave function in
a molecule [Nature Communications 8, 2266 (2017)], or the
determination of the probability for direct double ionization of an
atomic anion by a single photon over a wide photon energy range
[Phys. Rev. Lett. 120, 133202 (2018)]. The construction and
building of the PIPE setup has been made possible by substantial
funding from the German Ministry for Education and Research (BMBF)
within the "Verbundforschung" funding scheme under contracts
05KS7GU2, 05KS7KE1, 05KS7RF2,05KS7RG1, 05K10GUB, 05K10KEA,
5K10RF2,05K10RG1, 05K13GUA, 05K16GUC, 05K16RF3, 05K16RG1.
