期刊
PHYSICAL REVIEW ACCELERATORS AND BEAMS
卷 20, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevAccelBeams.20.043401
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资金
- French Agence Nationale de la Recherche (ANR SILAMPA) [LABEX PALM-ANR-10-LABX-39]
- Tres Grand Centre de calcul du CEA (TGCC)/Centre de Calcul Recherche et Technologie (CCRT) [2013-052707]
- Partnership for Advanced Computing in Europe (PRACE) [2014112576]
- CCRT team
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 10(22)-10(23) Wcm(-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.
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