- By:
- Godri, Rebecca; Baessler, Stefan F; Broussard, Leah J; Gonzalez, Francisco M; Jiang, Chenyang ; Mueller, Paul E; Penttila, Seppo I; Pierce, Joshua J; Ramsey, John C; Saunders, Alexander
- Journal Name:
- PoS - Proceedings of Science
- Page Number:
- 67
- Volume:
- 472
- Publication Date:
- July 17, 2025
- View DOI Listing:
- https://doi.org/10.22323/1.472.0067
Abstract
The Nab experiment at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL) aims to yield a precise measurement of the electron-neutrino correlation parameter, a, to Δaa=1×10−3 from the beta-decay of the free neutron. To achieve Nab’s precision goal, polarization of the neutron beam must be near-zero. A polarizer/analyzer combination, neutron monitors, and an Adiabatic Fast Passage (AFP) spin flipper will be used to determine a beam polarization effectively less than 2×10−5. Here, I will discuss the initial characterization efforts of the Nab spin flipper as well as plans for further testing.
