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

The Effects of Tape-Based Plasma Mirrors on GeV Electron Beams, with a View to Staging Laser Wakefield Accelerators

Sep 16, 2019, 7:00 PM
Parking Area (Hotel Hermitage)

Parking Area

Hotel Hermitage

poster WG8 - Advanced and novel accelerators for High Energy Physics Cheese and Wine Poster Session 1


Jonathan Wood (Imperial College London)


To overcome dephasing and pulse depletion while maintaining a high average accelerating gradient, staging multiple 10 GeV level Laser Wakefield Accelerators has been proposed. To minimise the total length of a staged accelerator laser beams must be introduced at an angle to the beamline. A convenient solution to reflect the intense laser pulse on to the beamline is to use a thin, moveable tape as a plasma mirror. Tapes can also be used to block depleted laser pulses from damaging later stages or beam optics.
We will present experimental results of the effects of tape-based plasma mirrors on 1-2 GeV electron beams. While the divergence increase of the electron bunch passing through 'cold’ tape material was small, when the tape was used as a plasma mirror the laser-produced plasma caused a large increase in the beam divergence integrated over electron energy. Spectrally dispersed measurements of the electron beam indicate that the transverse momentum gain was correlated with longitudinal momentum. Consequent limitations of staging schemes will be discussed.

Primary authors

Jonathan Wood (Imperial College London) Jan-Niclas Gruse (Imperial College London) Savio Rozario (Imperial College London) Rob Shalloo (Imperial College London) Dr Matthew Streeter (Imperial College London) Thomas Audet (The Queen's University of Belfast) Mr Michael Backhouse (Imperial College London) Dr Nicolas Bourgeois (Central Laser Facility (CLF)) Elias Gerstmayr (Imperial College London) Dr Nelson Lopes (Instituto Superior Técnico) Stuart Mangles (Imperial College London) Kristjan Poder (DESY) Rajeev Pattathil (Central Laser Facility,) Gianluca Sarri (Queen's University Belfast) Zulfikar Najmudin (Imperial College London)

Presentation materials

There are no materials yet.