Enhanced polarization of low pressure 3 He through metastability exchange optical pumping at high field
Name
1812.06139.pdf
Description
Accepted version
Size
1.79 MB
Format
Unknown
Checksum (MD5)
96356f9b46e15c32025a9651018b87c9
Author(s)
Maxwell, James
Alessi, J
Atoian, G
Beebe, E
Epstein, Charles S.
Milner, Richard G
Musgrave, Matthew
Pikin, A
Ritter, J
Zelenski, A
Date Issued
February 2019
Journal
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Publisher
Elsevier BV
Version
Author's final manuscript
Abstract
© 2019 We report high steady-state nuclear polarization of 1torr 3He gas nuclei via metastability exchange optical pumping at magnetic fields above 2T. The introduction of highly polarized 3He gas into Brookhaven's Electron Beam Ion Source would enable a new, polarized 3He ion source for use at the Relativistic Heavy Ion Collider and a future Electron–Ion Collider facility. By adapting recent developments in high field metastability exchange optical pumping for higher pressure gas, we have successfully polarized 1torr 3He sealed cells in the EBIS solenoid. Through careful manipulation of the RF discharge parameters, polarizations above 80% were attained at 2, 3 and 4T, with 89% being reached at 3T with a 664s relaxation time.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/J.NIMA.2019.02.019
