Design of a Longitudinally Polarized Target for CLAS12

The upcoming Run Group C experiments in Hall B of Jefferson Lab will utilize the CLAS12 detector system and a new dynamically polarized target of irradiated NH3 and ND3 to study the nucleon spin structure. The dimensional constraints necessary for incorporation of this new target into the CLAS12 detector system, as well as utilization of its 5T central solenoid field, introduce unique design challenges. I will present an overview of our solutions to these challenges including precision magnetic field optimization, and an innovative, rapid material transport mechanism inside the target cryostat.