Speaker
Description
A baseline concept for a continuous wave (CW) polarized positron injector was developed for the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab (Ce+BAF) [1]. This concept is based on positron beam generation by a high current polarized electron beam (1 mA, 120 MeV, >85% polarization) irradiating a 4 mm thick rotating water-cooled tungsten target or liquid metal target. The concept of the Ce+BAF injector including the concept of polarized electron source and simulations of polarized positron beam generation, positron beam capture and beam dynamics in the focusing solenoid, normal conducting standing wave capture cavities, magnetic chicane and SRF cavities are presented, as well as results of calculations of the energy deposited by the beams in the target, magnets, cavities and beam absorbers along the positron beam line.
[1] J. Grames et al., "Positron beams at Ce+BAF", in Proc. IPAC’23, Venice, Italy, May 7-12, 2023, MOPL152.
