4th European Advanced Accelerator Concepts Workshop

New directions in positron plasma wakefield acceleration

20 Sept 2019, 12:10

30m

Hotel Hermitage, La Biodola Bay, Isola d'Elba, Italy

talk WG1-WG8 Joint Session Van der Meer Award

Speaker

Spencer Gessner (CERN)

Description

The acceleration of positrons in plasma is a long-standing problem in the field of plasma wakefield acceleration. Recently, several groups have proposed novel techniques for controlling the on-axis plasma electron density in order to provide uniform accelerating and focusing fields for a trailing positron bunch [1,2,3]. In this talk, I will discuss the role of the transverse plasma electron motion in establishing useful fields for accelerating positrons in a variety of plasma geometries.

1. J. Viera, et. al. ``Nonlinear Laser Driven Donut Wakefields for Positron and Electron Acceleration." Phys. Rev. Lett. 112, 215001 (2014)
2. N. Jain, et. al. ``Positron Acceleration by Plasma Wakefields Driven by a Hollow Electron Beam." Phys. Rev. Lett. 115, 195001 (2015)
3. S. Diederichs, ``Positron Acceleration with Beam-Driven Plasma Accelerators." Masters Thesis. DESY (2019).

Presentation materials

SvdM_talk_EAAC_2019.pptx