COXINEL transport of laser plasma accelerated electrons

Driss Oumbarek Espinos (1, 2) , Amin Ghaith (1, 2) , Alexandre Loulergue (1) , Thomas André (1) , Charles Kitégi (1) , Mourad Sebdaoui (1) , Fabrice Marteau (1) , Frédéric Blache (1) , Mathieu Valléau (1) , Marie Labat (1) , Alain Lestrade (1) , Eléonore Roussel (3) , C.Édric Thaury (4) , S.Ébastien Corde (4) , Guillaume Lambert (4) , Olena Kononenko (4) , Jean-Philippe Goddet (4) , Amar Tafzi (4) , Igor Andriyash , Victor Malka (4) , Marie-Emmanuelle Couprie (1)

1 SSOLEIL - Synchrotron SOLEIL
2 Université Paris-Saclay
3 PhLAM - Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523
4 LOA - Laboratoire d'optique appliquée

Laser plasma acceleration (LPA) enables the generation of an up to several GeV electron beam with a short bunch length and high peak current within a centimeter scale. In view of undulator type light source applications, electron beam manipulation has to be applied. We report here on detailed electron beam transport for an LPA electron beam on the COXINEL test line, that consists of strong permanent quadrupoles to handle the electron beam divergence, a magnetic chicane to reduce the energy spread and a second set of quadrupoles for adjusting the focusing inside the undulator. After describing the measured LPA characteristics, we show that we can properly transport the electron beam along the line, thanks to several screens. We also illustrate the influence of the chromatic effects induced by the electron beam energy spread, both experimentally and numerically. We then study the sensitivity of the transport to the electron beam pointing and skewed quadrupolar components.

Domaines: Physique des accélérateurs [physics.acc-ph]

Driss Oumbarek Espinos, Amin Ghaith, Alexandre Loulergue, Thomas André, Charles Kitégi, et al.. COXINEL transport of laser plasma accelerated electrons. Plasma Phys.Control.Fusion, 2020, 62 (3), pp.034001. ⟨10.1088/1361-6587/ab5fec⟩. ⟨hal-03090346⟩