Production of Highly Polarized Positrons Using Polarized Electrons at MeV Energies

Abstract : The Polarized Electrons for Polarized Positrons experiment at the injector of the Continuous Electron Beam Accelerator Facility has demonstrated for the first time the efficient transfer of polarization from electrons to positrons produced by the polarized bremsstrahlung radiation induced by a polarized electron beam in a high-Z target. Positron polarization up to 82% have been measured for an initial electron beam momentum of 8.19 MeV=c, limited only by the electron beam polarization. This technique extends polarized positron capabilities from GeV to MeV electron beams, and opens access to polarized positron beam physics to a wide community.
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Physical Review Letters, American Physical Society, 2016, 116 (21), pp.214801. 〈10.1103/PhysRevLett.116.214801〉
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Contributeur : Emmanuelle Vernay <>
Soumis le : jeudi 2 juin 2016 - 08:45:20
Dernière modification le : mardi 22 mai 2018 - 21:48:07

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D. Abbott, P. Adderley, A. Adeyemi, P. Aguilera, M. Ali, et al.. Production of Highly Polarized Positrons Using Polarized Electrons at MeV Energies. Physical Review Letters, American Physical Society, 2016, 116 (21), pp.214801. 〈10.1103/PhysRevLett.116.214801〉. 〈in2p3-01325260〉

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