Document Type

Conference Paper

Publication Date


Publication Title

Proceedings of the 6th International Particle Accelerator Conference



Conference Name

6th International Particle Accelerator Conference (IPAC 2015), Richmond, Virginia, USA, May 3-8, 2015


An experiment demonstrating a new method for producing polarized positrons has been performed at the CEBAF accelerator at Jefferson Laboratory. The PEPPo (Polarized Electrons for Polarized Positrons) concept relies on the production of polarized e+/e pairs originating from the bremsstrahlung radiation of a longitudinally polarized electron beam interacting within a 1.0 mm tungsten pair-production target. This paper describes preliminary results of measurements using an 8.2 MeV/c electron beam with polarization 84% to generate positrons in the range of 3.1 to 6.2 MeV/c with polarization as high as ∼80%.


Supported in part by the U.S. Department of Energy, the French Centre National de la Recherche Scientifique, the International Linear Collider project, and the Department of Energy National Nuclear Security Administration under award number DE-NA000097.

Copyright © 2015 by JACoW, Geneva, Switzerland.

Published under a Creative Commons Attribution 3.0 unported license.

Original Publication Citation

Adeyemi, A. H., Gueye, P. L., Adderley, P. A., Stutzman, M. L., Ali, M. M., Areti, H., . . . Variola, A. (2015). PEPPo: Using a Polarized Electron Beam to Produce Polarized Positrons. Paper presented at the 6th International Particle Accelerator Conference, Richmond, VA, May 3-8, 2015.


0000-0001-7282-8120 (Hyde), 0000-0002-4236-0974 (Golge)