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

Ionizing Laser Propagation at AWAKE

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

Parking Area

Hotel Hermitage

poster WG5 - Plasma devices, plasma and beam diagnostics Cheese and Wine Poster Session 1


Joshua Moody (Max Planck Institute for Physics)


The plasma source during AWAKE run 1 consists of a 10 meter long rubidium vapor source ionized by a laser pulse from a 4 TW titanium:sapphire system focused to a mm spot size. Because the plasma column geometry can have an effect on the formation of the proton driven plasma wakefields when the plasma skin depth approaches the size of the plasma column, the geometry needs to be understood. Since several resonances associated with atomic state transitions of the valence electron are within the bandwidth of the laser pulse, the pulse experiences strong nonlinear effects that can cause stretching and nonlinear focusing thereby dramatically affecting the resulting plasma column due changes in intensity. By experimentally studying the time resolved transverse profile and the spectrum from the output laser radiation, as well as the transverse profile of plasma column at the end of the vapor source using a schlieren imaging technique as a function of input intensity and rubidium density, a numerical model for the laser propagation is qualified. Using the propagation model, potential design studies for AWAKE run 2 are discussed.

Primary authors

Joshua Moody (Max Planck Institute for Physics) Anna-Maria Bachmann (CERN) Valentina Lee Mark Aladi (MTA Wigner Research Center for Physics) Béla Ráczkevi (MTA Wigner Research Center for Physics) M. Á. Kedves (MTA Wigner Research Center for Physics) Gabor Demeter (MTA Wigner Research Center for Physics) Gagik Djotyan (MTA Wigner Research Center for Physics) Eduardo Granados (CERN) Valentin Fedosseev (CERN) Spencer Gessner (CERN) Patric Muggli (Max-Planck-Institut für Physik)

Presentation materials