PoS - Proceedings of Science
Volume 379 - The 18th International Workshop on Polarized Sources, Targets, and Polarimetry (PSTP2019) - Polarized Sources
Development of a Polarized 3He++ Ion Source for the EIC
M. Musgrave,* R. Milner, G. Atoian, E. Beebe, S. Ikeda, S. Kondrashev, M. Okamura, A. Poblaguev, D. Raparia, J. Ritter, S. Trabocchi, A. Zelenski, J. Maxwell
*corresponding author
Full text: pdf
Published on: September 23, 2020
Abstract
The capability of accelerating a high-intensity polarized $^{3}$He ion beam would provide an effective polarized neutron beam for new high-energy QCD studies of nucleon structure. This development is essential for the future Electron Ion Collider, which could use a polarized $^{3}$He ion beam to probe the spin structure of the neutron. The proposed polarized $^{3}$He ion source is based on the Electron Beam Ion Source (EBIS) currently in operation at Brookhaven National Laboratory. $^{3}$He gas would be polarized within the 5 T field of the EBIS solenoid via Metastability Exchange Optical Pumping (MEOP) and then pulsed into the EBIS vacuum and drift tube system where the $^{3}$He will be ionized by the 10 Amp electron beam. The goal of the polarized $^{3}$He ion source is to achieve $2.5 \times 10^{11}$ $^{3}$He$^{++}$/pulse at 70% polarization. An upgrade of the EBIS is currently underway. An absolute polarimeter and spin-rotator is being developed to measure the $^{3}$He ion polarization at 6 MeV after initial acceleration out of the EBIS. The source is being developed through collaboration between BNL and MIT.
DOI: https://doi.org/10.22323/1.379.0043
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.