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Communication Dans Un Congrès Année : 2017

Polarized positron production at MeV electron accelerators

Eric Voutier

Résumé

The Polarized Electrons for Polarized Positrons (PEPPo) experiment has demonstrated the efficient transfer of polarization from electrons to positrons produced by the bremsstrahlung radiation of a polarized electron beam in a high-$Z$ target. Positron polarization up to 82\% has been measured for an initial electron beam momentum of 8.19 MeV/$c$, limited only by the electron beam polarization. Combined with the high intensity and high polarization performances of polarized electron sources, this technique extends efficient polarized positron capabilities from GeV to MeV electron accelerators. This presentation reviews the PEPPo proof-of-principle experiment and addresses the perspectives for future applications.

Dates et versions

hal-02410849 , version 1 (14-12-2019)

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Eric Voutier. Polarized positron production at MeV electron accelerators. 19th International Workshop on Low-Energy Positron and Positronium Physics and 20th International Symposium on Electron-Molecule Collisions and Swarms, Jul 2017, Magnetic Island, Australia. ⟨hal-02410849⟩
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