MEOP based 3He polarization and injection system for experiments below 1 K

T. Rao; L. Barrón-Palos; I. Berkutov; C. B. Crawford; R. Golub; P. Huffman; M. Konieczny; E. Korobkina; Austin Reid; B. Salazar-Ángeles; C. Smith; R. Tat; T. Zanatta-Martínez

doi:10.1088/1748-0221/20/01/P01007

MEOP based ³He polarization and injection system for experiments below 1 K

T. Rao, L. Barrón-Palos, I. Berkutov, C. B. Crawford, R. Golub, P. Huffman, M. Konieczny, E. Korobkina, Austin Reid, B. Salazar-Ángeles, C. Smith, R. Tat, T. Zanatta-Martínez

Research output: Contribution to journal › Article › peer-review

Abstract

Metastability exchange optical pumping (MEOP) is a widely used technique for producing polarized ³He. In connection with an experiment to search for the electric dipole moment of the neutron (nEDM) we have built a MEOP based ³He polarization and injection system to prepare 80 % polarized ³He at room temperature which will be injected into a ∼ 400 mK measurement cell filled with superfluid ⁴He. We describe the polarization and injection system, which is designed to allow for final concentrations of 10^-8-10^-10 of 80% polarized ³He in the superfluid filled measurement cell. Only ≈ 0.72%

Original language	English
Article number	P01007
Journal	Journal of Instrumentation
Volume	20
Issue number	1
DOIs	https://doi.org/10.1088/1748-0221/20/01/P01007
State	Published - Jan 1 2025

Bibliographical note

Publisher Copyright:
© 2025 The Author(s)

Funding

This work was supported in part by the US Department of Energy under grant number DE-FG02- 97ER41042 and through subcontract number 4000196635 administered through Oak Ridge National Laboratory.

Funders	Funder number
Oak Ridge National Laboratory
U.S. Department of Energy EPSCoR	DE-FG02- 97ER41042, 4000196635

Keywords

Gas systems and purification
Large detector systems for particle and astroparticle physics

ASJC Scopus subject areas

Mathematical Physics
Instrumentation

Access to Document

10.1088/1748-0221/20/01/P01007

Cite this

Rao, T., Barrón-Palos, L., Berkutov, I., Crawford, C. B., Golub, R., Huffman, P., Konieczny, M., Korobkina, E., Reid, A., Salazar-Ángeles, B., Smith, C., Tat, R., & Zanatta-Martínez, T. (2025). MEOP based ³He polarization and injection system for experiments below 1 K. Journal of Instrumentation, 20(1), Article P01007. https://doi.org/10.1088/1748-0221/20/01/P01007

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abstract = "Metastability exchange optical pumping (MEOP) is a widely used technique for producing polarized 3He. In connection with an experiment to search for the electric dipole moment of the neutron (nEDM) we have built a MEOP based 3He polarization and injection system to prepare 80 \% polarized 3He at room temperature which will be injected into a ∼ 400 mK measurement cell filled with superfluid 4He. We describe the polarization and injection system, which is designed to allow for final concentrations of 10-8-10-10 of 80\% polarized 3He in the superfluid filled measurement cell. Only ≈ 0.72\%",

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AU - Rao, T.

AU - Barrón-Palos, L.

AU - Berkutov, I.

AU - Crawford, C. B.

AU - Golub, R.

AU - Huffman, P.

AU - Konieczny, M.

AU - Korobkina, E.

AU - Reid, Austin

AU - Salazar-Ángeles, B.

AU - Smith, C.

AU - Tat, R.

AU - Zanatta-Martínez, T.

PY - 2025/1/1

Y1 - 2025/1/1

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AB - Metastability exchange optical pumping (MEOP) is a widely used technique for producing polarized 3He. In connection with an experiment to search for the electric dipole moment of the neutron (nEDM) we have built a MEOP based 3He polarization and injection system to prepare 80 % polarized 3He at room temperature which will be injected into a ∼ 400 mK measurement cell filled with superfluid 4He. We describe the polarization and injection system, which is designed to allow for final concentrations of 10-8-10-10 of 80% polarized 3He in the superfluid filled measurement cell. Only ≈ 0.72%

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