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arXiv · 2106.06606

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

James Maxwell·Richard Milner
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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.

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James Maxwell, Richard Milner. 2021-06-11. A Concept for Polarized $^3$He Targets for High Luminosity Scattering Experiments in High Magnetic Field Environments. https://doi.org/10.1016/j.nima.2021.165590

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