A Concept for Polarized ${}^3$He Targets for High Luminosity Scattering Experiments in High Magnetic Field Environments

Abstract

We present the conceptual design of a polarized ${}^3$He target to be used for high luminosity scattering experiments within high magnetic field environments. This two-cell target will take advantage of advancements in optical pumping techniques at high magnetic field to create 60% longitudinally polarized ${}^3$He gas in a pumping cell within a uniform magnetic field above 1 T. By transferring the polarized gas to cryogenic target cell, the gas density is increased to create a target thickness suitable for high luminosity applications. We discuss the general design of this scheme, and plans for its application in Jefferson Lab's CLAS12 detector.

arXiv admin note: substantial text overlap with arXiv:1911.06650