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DOE OSTI · 3003415

Characterizing the AFP Spin Flipper for the Nab Experiment

Godri, Rebecca [Univ. of Tennessee, Knoxville, TN (United States)]·Alarcon, R. [Arizona State Univ., Tempe, AZ (United States)]·Baeßler, S. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Univ. of Virginia, Charlottesville, VA (United States)]·Broussard, L. J. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)]·Clymer, S. [Arizona State Univ., Tempe, AZ (United States)]·Crawford, C. B. [Univ. of Kentucky, Lexington, KY (United States)]·Dodson, G. W. [Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)]·Fry, J. [Eastern Kentucky Univ., Richmond, KY (United States)]·Fomin, N. [Univ. of Tennessee, Knoxville, TN (United States)]·Gonzalez, F. M. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)]·Hamblen, J. [Univ. of Tennessee, Chattanooga, TN (United States)]·Hendrus, C. [The Ohio State Univ., Columbus, OH (United States)]·Jiang, C. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)]·Landgraf, C. [Univ. of Virginia, Charlottesville, VA (United States)]·Nelsen, A. [Univ. of Kentucky, Lexington, KY (United States)]·Macsai, N. [University of Winnipeg, Winnipeg, MB (Canada)]·Mammei, R. [University of Winnipeg, Winnipeg, MB (Canada)]·Mueller, P. E. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)]·Pate, J. H. [Univ. of Tennessee, Knoxville, TN (United States)]·Penttilä, S. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)]·Pierce, J. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)]·Počanić, D. [Univ. of Virginia, Charlottesville, VA (United States)]·Rahangdale, H. [Univ. of Tennessee, Knoxville, TN (United States)]·Ramsey, J. C. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)]·Richburg, L. [Univ. of Tennessee, Knoxville, TN (United States)]·Saunders, A. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)]·Wallace, I. [Univ. of Tennessee, Knoxville, TN (United States)]
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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 $\frac{Δa}{a}$ = 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.

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Godri, Rebecca [Univ. of Tennessee, Knoxville, TN (United States)], Alarcon, R. [Arizona State Univ., Tempe, AZ (United States)], Baeßler, S. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Univ. of Virginia, Charlottesville, VA (United States)], Broussard, L. J. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)], Clymer, S. [Arizona State Univ., Tempe, AZ (United States)], Crawford, C. B. [Univ. of Kentucky, Lexington, KY (United States)], Dodson, G. W. [Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)], Fry, J. [Eastern Kentucky Univ., Richmond, KY (United States)], Fomin, N. [Univ. of Tennessee, Knoxville, TN (United States)], Gonzalez, F. M. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)], Hamblen, J. [Univ. of Tennessee, Chattanooga, TN (United States)], Hendrus, C. [The Ohio State Univ., Columbus, OH (United States)], Jiang, C. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)], Landgraf, C. [Univ. of Virginia, Charlottesville, VA (United States)], Nelsen, A. [Univ. of Kentucky, Lexington, KY (United States)], Macsai, N. [University of Winnipeg, Winnipeg, MB (Canada)], Mammei, R. [University of Winnipeg, Winnipeg, MB (Canada)], Mueller, P. E. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)], Pate, J. H. [Univ. of Tennessee, Knoxville, TN (United States)], Penttilä, S. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)], Pierce, J. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)], Počanić, D. [Univ. of Virginia, Charlottesville, VA (United States)], Rahangdale, H. [Univ. of Tennessee, Knoxville, TN (United States)], Ramsey, J. C. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)], Richburg, L. [Univ. of Tennessee, Knoxville, TN (United States)], Saunders, A. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)], Wallace, I. [Univ. of Tennessee, Knoxville, TN (United States)]. 2025-06-27. Characterizing the AFP Spin Flipper for the Nab Experiment. https://doi.org/10.22323/1.472.0067

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