The picture shows acceleration of electrons (from top to bottom) and positrons (bottom to top) in plasma wakes produced by elect
The picture shows acceleration of electrons (from top to bottom) and positrons (bottom to top) in plasma wakes produced by electron and positron bunches respectively.

Progress in Plasma Wakefield Acceleration

​Seminar by Chandrashekhar Joshi, University of California, Los Angeles, USA

Abstract of talk

High energy colliders used for research on the nature of matter and forces, have become gargantuan and very expensive to build. New techniques that will reduce the cost and size of these machines are therefore being pursued. In this talk I will discuss the latest progress on electron and positron beam-driven wakefield acceleration in performed plasmas and hollow plasma channels. Both linear and extremely nonlinear regimes of plasma wakefield acceleration have been studied. The electric field structure of the wakefield cavity have been mapped out with extraordinary accuracy and shows that the cavity field structure is indeed suitable for accelerating electrons with minimal emittance growth. First data on emittance of ionization injected electrons into such wakes will be presented that shows that the emittance of the accelerated particles can be more than an order of magnitude smaller than that of the drive bunch that excites the wake. I will then discuss the long range plans for PWFA research in the US.
Category Seminar
Location: PJ lecture room, Origo building, Fysikgården 2
Starts: 13 September, 2016, 14:30
Ends: 13 September, 2016, 15:30

Published: Thu 01 Sep 2016. Modified: Fri 02 Sep 2016