Dynamically polarized target for the g[superscript p][subscript 2] and G[superscript p][subscript E] experiments at Jefferson Lab
Author(s)Pierce, J.; Keith, C.; Maxwell, James D
Dynamically polarized target for the g2p and GEp experiments at Jefferson Lab
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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 [subscript 4]He evaporation refrigerator, and a re-purposed, superconducting split-coil magnet. It has been used to polarize protons in irradiated NH[subscript 3] 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.
DepartmentMassachusetts Institute of Technology. Laboratory for Nuclear Science
Physics of Particles and Nuclei
Pierce, J., J. Maxwell, and C. Keith. “Dynamically Polarized Target for the G 2 P and G E P Experiments at Jefferson Lab.” Physics of Particles and Nuclei 45.1 (2014): 303–304.
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