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Sep 24 – 29, 2023
US/Eastern timezone

A High-Magnetic-Field Polarized 3He Target for JLab's CLAS12

Sep 26, 2023, 11:00 AM
30m
JuniorA1-A2 (Durham Convention Center)

JuniorA1-A2

Durham Convention Center

Talk Polarized Ion and Lepton Sources and Targets Polarized Ion and Lepton Sources and Targets

Speaker

Dr James Maxwell (Jefferson Lab)

Description

Polarized $^3$He nuclear targets have been invaluable surrogates for polarized neutron targets in spin-dependent scattering studies of the quark and gluon structure of matter. Traditional polarized $^3$He targets have seen dramatic improvements in the last three decades, however they have been limited in their use in spectrometers that utilize high-magnetic-field tracking systems, such as Jefferson Lab's CLAS12 spectrometer. Developments in high-magnetic-field metastability exchange optical pumping of $^3$He, recently brought to bear for a polarized $^3$He ion source for RHIC and the EIC, offer a path to a high-field polarized $^3$He fixed target. By combining these techniques with a double-cell cryogenic target design, such as the one used for the MIT-Bates 88-02 experiment, polarization and target density comparable to traditional polarized $^3$He targets can be reached while within a high magnetic field environment. We will discuss the conceptual design for such a target and show our progress in this target's development.

Primary author

Dr James Maxwell (Jefferson Lab)

Co-authors

Chris Keith (Jefferson Lab) Dien Nguyen (JLAB) James Brock (Thomas Jefferson National Accelerator Facility) Richard Milner (MIT) Xiaqing Li (MIT)

Presentation materials