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Sep 24 – 29, 2023
US/Eastern timezone

Improved 3He Targets for the A1n and GEn Experiments at JLab

Sep 26, 2023, 5:00 PM
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

Christopher Jantzi (University of Virginia)

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.

Primary author

Christopher Jantzi (University of Virginia)

Co-author

Presentation materials