Low Energy Electron Positron Physics Workshop

The International Workshop on Low Energy Electron Positron Physics will take place from Nov. 3-7 at Jefferson Lab in CEBAF Center rm. F113 and via Zoom.

Along the path to GeV positron beams at Jefferson Lab, new capabilities should, in the meantime, emerge, providing opportunities not only for low-energy (sub-GeV) nuclear physics but, also, for atomic physics and material science. The MeVPhy@JLab International Workshop at Jefferson Lab aims at exploring these new paths for science using milliampere polarized electron beams from a few MeV to eventually a few hundred MeV, as well as (polarized) positron beams from a few hundred keV up to several tens of MeV, possibly few hundred MeV. The longtime interest for high-duty factor positron beams at JLab with high average intensities 1 uA (1012 e+/s) today constitutes a building block of a JLab Upgrade initiative known as Ce+BAF 12 GeV. Positrons produced in an electromagnetic shower resulting from a sub-GeV high-duty cycle and high-intensity polarized electron beam within a high-Z target, take advantage of the PEPPo (Polarized Electrons for Polarized Positrons) technique to uniquely produce a highly polarized positron beam from a compact accelerator footprint. These beams enable a unique experimental program bringing new experimental observables to reveal the details of the electromagnetic interaction, unravel the structure of nucleons and nuclei, and investigate the existence of physics beyond the standard model.