Characterization of relativistic electron-positron beams produced with laser-accelerated GeV electrons.

ABSTRACT: The characterization of an electron-positron beam generated from the interaction of a multi-GeV electron beam with a lead plate is performed using GEANT4 simulations. The dependence of the positron beam size on driver electron beam energy and lead converter thickness is investigated in detail. A pancake-like positron beam structure is generated with a monoenergetic multi-GeV driver electron beam, with the results indicating that a 5 GeV driver electron beam with 1 nC charge can generate a positron beam with a density of 10¹⁵-10¹⁶ cm^-3 at one radiation length of lead. In addition, we find that electron-positron beams generated using above-GeV electron beams have neutralities greater than 0.3 at one radiation length of lead, whereas neutralities of 0.2 are ob

SUBMITTER: Song H 

PROVIDER: S-EPMC9823095 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature