Publications
Publication Information
| Title | Precision Moller polarimetry for PREX-2 and CREX |
| Authors | Donald Jones, James Napolitano, Kent Paschke, William Henry, Ciprian Gal, Roman Pomatsalyuk, Paul Souder, Eric King, David Gaskell, Aaron Kaplan |
| JLAB number | JLAB-PHY-22-3655 |
| LANL number | arXiv:2207.02150 |
| Other number | DOE/OR/23177-5537 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
|
Journal Compiled for Nuclear Instruments & Methods in Physics Research, Section A Volume 1045 Page(s) 167506 Refereed | |
| Publication Abstract: | The PREX-2 and CREX experiments in Hall~A at Jefferson Lab are precision measurements of parity violating elastic electron scattering from complex nuclei. One requirement was that the incident electron beam polarization, typically $\approx90\%$, be known with 1\% precision. We commissioned and operated a Moller polarimeter on the beam line that exceeds this requirement, achieving a precision of 0.89\% for PREX-2, and 0.85\% for CREX. The uncertainty is purely systematic, accumulated from several different sources, but dominated by our knowledge of the target polarization. Our analysis also demonstrates the need for accurate atomic wave functions in order to correct for the Levchuk Effect. We describe the details of the polarimeter operation and analysis, as well as (for CREX) a comparison to results from a different polarimeter based on Compton scattering. |
| Experiment Numbers: | E12-12-004, E12-11-101 |
| Group: | Hall A |
| Document: | |
| DOI: | https://doi.org/10.1016/j.nima.2022.167506 |
| Accepted Manuscript: | 1-s2.0-S0168900222007987-main.pdf |
| Supporting Documents: | |
| Supporting Datasets: | |