A compact all-electric Figure-8 spin-transparent storage ring at JLab could directly measure the electron EDM at about 5.8e-30 ecm and detect axion-induced spin precession at 0.2 nHz, if one-day spin coherence holds.
Searching for axion forces with spin precession in atoms and molecules
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abstract
We propose to use atoms and molecules as quantum sensors of axion-mediated monopole-dipole forces. We show that electron spin precession experiments using atomic and molecular beams are well-suited for axion searches thanks to the presence of co-magnetometer states and single-shot temporal resolution. Experimental strategies to detect axion gradients from localised sources and the earth are presented, taking ACME III as a prototype example. Other possibilities including atomic beams, and laser-cooled atoms and molecules are discussed.
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High Precision Fundamental Physics Experiments at JLab with Spin-transparent Storage Rings of Low-energy Polarized Electron Beams
A compact all-electric Figure-8 spin-transparent storage ring at JLab could directly measure the electron EDM at about 5.8e-30 ecm and detect axion-induced spin precession at 0.2 nHz, if one-day spin coherence holds.