Speaker
Description
The nuclear-spin polarized $^3$He is a crucial instrument for investigating the neutron's spin structure, effectively acting as a polarized neutron target. The latest advancements in metastability exchange optical pumping (MEOP) techniques within high magnetic fields have enabled the use of polarized $^3$He targets in strong magnetic field environments, such as Jefferson Lab's CLAS12 spectrometer. This work examines the polarization of $^3$He nuclei through MEOP under varying pressures in a fillable cell, exposed to magnetic fields ranging from 1 to 5 T. The objective of this research is to develop a polarized $^3$He double-cell target for incorporation into the CLAS12 detector's central solenoid, featuring a room temperature pumping cell and the diffusion of polarized $^3$He to a cryogenically-cooled target cell. The design concepts, the present status, and the future implementation of this project are discussed.
