Polarized Positrons at Jefferson Lab

Journal Article · Thu Jan 01 04:00:00 EST 2009 · Preprint to be distributed

DOI:https://doi.org/10.1063/1.3215617· OSTI ID:956325

Dumas, Jonathan; Grames, Joseph; Voutier, Eric

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 Lab National Accelerator Facility
• Sponsoring Organization: USDOE
• OSTI ID: 956325
• Report Number(s): JLAB-ACC-09-899; arXiv:0903.3076; DOE/OR/23177-0658
• Journal Information: Preprint to be distributed, Journal Name: Preprint to be distributed
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BREMSSTRAHLUNG
CEBAF ACCELERATOR
ELECTRON SOURCES
ELECTRONS
PAIR PRODUCTION
POLARIZATION
POSITRONS