Sep 15 – 21, 2019
Hotel Hermitage, La Biodola Bay, Isola d'Elba, Italy
Europe/Rome timezone

Positron transport and acceleration in beam-driven plasma wakefield accelerators using a plasma column

Sep 18, 2019, 5:00 PM
SE (Hotel Hermitage)


Hotel Hermitage

talk WG6-WG8 Joint Session WG6-WG8 Joint Session


Severin Diederichs (University of Hamburg/DESY/LBNL)


The transport and acceleration of positron beams is a crucial challenge on the path towards plasma-based particle colliders. We propose a scheme that allows for the simultaneous acceleration and transport of positron beams in plasma wakefield accelerators. A finite-radius plasma column is employed, leading to a reduction of the restoring force acting upon the plasma electrons forming the plasma wake, which results in an elongation of the on-axis return point of the electrons and, hence, creating a long, high-density electron filament. As demonstrated by means of 3D PIC simulations, this filament induces the formation of a wakefield region that enables the acceleration and quality-preserving transport of 100 pC-scale positron beams for a range of plasma densities and drive beam parameters.

Primary author

Severin Diederichs (University of Hamburg/DESY/LBNL)


Timon Mehrling (Deutsches Elektronen-Synchrotron DESY) Carlo Benedetti (LBNL) Carl Schroeder (Lawrence Berkeley National Laboratory) Alexander Knetsch (Deutsches Elektronen-Synchrotron DESY) Dr Eric Esarey (LBNL) Jens Osterhoff (Deutsches Elektronen-Synchrotron DESY)

Presentation materials