Speaker
Description
Recent experiments at Jefferson National Laboratory (JLab) utilize polarized $^3$He targets at high luminosity to study the structure functions and elastic form factors of the neutron. One experiment explores the spin asymmetry in the virtual photoabsorption cross section on the neutron, $A_1^n$. This experiment ran at JLab early to mid 2020. The other experiment explores the neutron electric form factor $G_E^n$ and will complete data taking during September of this year.
The design, construction, and characterization of these polarized $^3$He targets has evolved rapidly from $A_1^n$ to $G_E^n$. In this talk, I’ll discuss the hurdles we faced creating larger $^3$He targets as well the improvements we’ve made to the targets, allowing us to increase luminosity by a factor of three between these experiments.
