Bulletin of the American Physical Society
2024 Fall Meeting of the APS Division of Nuclear Physics
Sunday–Thursday, October 6–10, 2024; Boston, Massachusetts
Session R12: Electromagnetic Interactions II
10:30 AM–12:18 PM,
Thursday, October 10, 2024
Hilton Boston Park Plaza
Room: Berkeley & Clarendon, Mezzanine Level
Chair: Hem Bhatt, Mississippi State University
Abstract: R12.00003 : Jefferson Lab’s GEn-II Experiment: Using a Novel 3He Target for the Measurement of the Neutron Electric Form Factor at High Q2*
10:54 AM–11:06 AM
Presenter:
Jack Jackson
(William & Mary)
Author:
Jack Jackson
(William & Mary)
Collaboration:
The SBS collaboration
By colliding a polarized electron beam with a polarized 3He target (with novel convection cell), experiment E12-09-016 (September 2022 - October 2023), GEn-II, measured the double spin asymmetry of the e − n cross section in order to extract the form factor ratio GEn /GMn at Q2 values of 2.9, 6.6, and 9.7 GeV2. The changes in the target cell’s geometry allowed for higher beam currents coupled with high SEOP (Spin Exchange Optical Pumping) polarizations. These effects helped lead to luminosities previously unattainable in polarized 3He experiments. This talk will cover performance aspects of the 3He target during GEn-II.
*This work was supported by the U.S. Department of Energy and Jefferson Lab.
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