Sep 24 – 30, 2017
La Biodola, Isola d'Elba
Europe/Rome timezone

Experimental measurement of transverse wakefields in hollow plasma channels

Sep 25, 2017, 4:00 PM
SML, Sala Maria Luisa (HH)

SML, Sala Maria Luisa


talk WG1 - Electron Beams from Plasmas WG1_Parallel


Mr Carl Andreas Lindstrøm (University of Oslo)


Plasma wakefield acceleration (PWFA) is a promising technology for a compact TeV-scale electron-positron collider. While great progress has been made on PWFA for electrons, the same is not true for positrons. Hollow channel plasma wakefield acceleration (HC-PWFA) is a promising alternative approach for accelerating positrons, where energy is transferred from a drive bunch to a trailing bunch in a hollow tube of plasma via a strong longitudinal wakefield. However, an offset drive beam also excites a transverse wakefield, whereby the drive and trailing beams are strongly deflected away from the axis. This sets stringent limits on alignment tolerances; one of the main challenges for a HC-PWFA-based collider. We present experimental measurements of the longitudinal profile of this transverse wakefield, based on data from the FACET 2016 positron run, and compare these to theoretical predictions.

Primary author

Mr Carl Andreas Lindstrøm (University of Oslo)


Mr Antoine Doche (Laboratoire d'Optique Appliquée, Ecole Polytechnique-Ensta, France) Dr Brendan O'Shea (SLAC National Accelerator Laboratory) Prof. Chandrashekhar Joshi (UCLA) Dr Chris Clayton (UCLA) Dr Christine Clarke (SLAC) Dr Erik Adli (University of Oslo, Norway) James M. Allen (SLAC) Dr Joel Frederico (SLAC) Kenneth Marsh (UCLA) Mark Hogan (SLAC National Accelerator Laboratory) Dr Michael Litos (University of Colorado Boulder) Dr Navid Vafaei-Najafabadi (Stony Brook University) Dr Selina Green (SLAC) Spencer Gessner (CERN) Prof. Sébastien Corde (Ecole Polytechnique) Dr Vitaly Yakimenko (SLAC) Prof. Warren Mori (UCLA) Prof. Wei Lu (Tsinghua University of Beijing, China) Dr Weiming An (University of California Los Angeles)

Presentation materials