Dynamically polarized target for the g2p and GEpexperiments at Jefferson Lab

J. Pierce; J. Maxwell; C. Keith

doi:10.1134/S1063779614010808

Dynamically polarized target for the g₂^p and G_E^pexperiments at Jefferson Lab

J. Pierce, J. Maxwell, C. Keith

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

3 Scopus citations

Abstract

Recently, two experiments were concluded in Hall A at Jefferson Lab which utilized a newly assembled, solid, polarized hydrogen target. The primary components of the target are a new, high cooling power ⁴He evaporation refrigerator, and a re-purposed, superconducting split-coil magnet. It has been used to polarize protons in irradiated NH₃ at a temperature of 1 K and at fields of 2.5 and 5.0 tesla. Maximum polarizations of 55% and 95% were obtained at those fields, respectively. To satisfy the requirements of both experiments, the magnet had to be routinely rotated between angles of 0°, 6°, and 90° with respect to the incident electron beam.

Original language	English
Pages (from-to)	303-304
Number of pages	2
Journal	Physics of Particles and Nuclei
Volume	45
Issue number	1
DOIs	https://doi.org/10.1134/S1063779614010808
State	Published - Jan 2014
Externally published	Yes

Funding

Authored by Jefferson Science Associates, LLC under U.S. DOE Contract No. DE-AC05-06OR23177 . The U.S. Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce this manuscript for U.S. Government purposes.

Funders	Funder number
U.S. Department of Energy	DE-AC05-06OR23177

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abstract = "Recently, two experiments were concluded in Hall A at Jefferson Lab which utilized a newly assembled, solid, polarized hydrogen target. The primary components of the target are a new, high cooling power 4He evaporation refrigerator, and a re-purposed, superconducting split-coil magnet. It has been used to polarize protons in irradiated NH3 at a temperature of 1 K and at fields of 2.5 and 5.0 tesla. Maximum polarizations of 55% and 95% were obtained at those fields, respectively. To satisfy the requirements of both experiments, the magnet had to be routinely rotated between angles of 0°, 6°, and 90° with respect to the incident electron beam.",

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Dynamically polarized target for the g₂^p and G_E^pexperiments at Jefferson Lab

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