Generation of high-energy electron-positron pairs in the collision of a laser-accelerated electron beam with a multipetawatt laser - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Phys.Rev.Accel.Beams Année : 2017

Generation of high-energy electron-positron pairs in the collision of a laser-accelerated electron beam with a multipetawatt laser

Résumé

Generation of electron-positron pairs via the multiphoton Breit-Wheeler process in an all-optical scheme will be made possible on forthcoming high-power laser facilities through the collision of wakefield-accelerated GeV electrons with a counter-propagating laser pulse of 1022–1023 W cm-2 peak intensity. By means of integrated 3D particle-in-cell simulations, we show that the production of high-density sources of ultrarelativistic electron-positron pairs is within the reach of soon-to-be-available laser systems. Under physical conditions accessible to the dual-beam CILEX-Apollon facility, we find that the generated positrons can carry a total charge of 0.05–1 nC, with a mean energy of 100–400 MeV and an angular divergence of 0.01–0.1 rad. The variations of the positron source’s properties with respect to the laser parameters are also examined.

Dates et versions

hal-01554577 , version 1 (03-07-2017)

Identifiants

Citer

M. Lobet, X. Davoine, E. d'Humières, L. Gremillet. Generation of high-energy electron-positron pairs in the collision of a laser-accelerated electron beam with a multipetawatt laser. Phys.Rev.Accel.Beams, 2017, 20 (4), pp.043401. ⟨10.1103/PhysRevAccelBeams.20.043401⟩. ⟨hal-01554577⟩

Collections

CEA CNRS DAM
104 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More