A Polarized Positron Source for CEBAF

Conference · Thu Jan 01 04:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3232018· OSTI ID:1999418

Dumas, J.; Grames, J.; Voutier, E.; Elouadrhiri, Latifa; Grames, Jospeh; Melnitchouk, Wally; Voutier, Eric; Forest, Tony A.

A novel concept for producing polarized positrons at Jefferson Lab using the CEBAF polarized electron photo-injector is presented. This approach relies on the polarization transfer from low energy highly polarized electrons to positrons via bremsstrahlung followed by pair production in a conversion target. An experiment to test this concept is discussed on the basis of GEANT4 simulations. It is shown that this low energy approach, which benefits from recent advances in high current high polarization electron sources, can yield positron longitudinal polarization up to 40%.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1999418
• Report Number(s): JLAB-PHY-09-1064; arXiv:0903.3076; DOE/OR/23177-0994
• Conference Information: Journal Name: AIP Conference Proceedings Journal Volume: 1160
• Country of Publication: United States
• Language: English