A Method to Measure Positron Beam Polarization Using Optically Polarized Atoms

Authors

Joshua Joshua Machacek, Australian National University
Sean Hodgman, Australian National University
Stephen Buckman, Australian National University, UCSI University
T. J. Gay, University of Nebraska - LincolnFollow

Document Type

Article

Date of this Version

4-3-2023

Citation

Machacek, J.R.; Hodgman, S.; Buckman, S.; Gay, T.J. A Method to Measure Positron Beam Polarization Using Optically Polarized Atoms. Atoms 2023, 11, 65. https://doi.org/ 10.3390/atoms11040065

Comments

Open access.

Abstract

We outline an experimental technique for measuring the degree of polarization of a positron beam using an optically pumped, spin-polarized Rb target. The technique is based on the production and measurement of the ortho- and para-positronium fractions through positron collisions with the Rb atoms as a function of their polarization. Using realistic estimates for the cross sections and experimental parameters involved, we estimate that a polarization measurement with an uncertainty of 3% of the measured value can be achieved in an hour