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High precision fundamental physics experiments using compact spin-transparent storage rings of low energy polarized electron beams

Journal Article · · Physics Letters. B
 [1];  [2];  [1]
  1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  2. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
We present a new design of highly specialized small storage rings for low energy polarized electron beams. The new design is based on the transparent spin methodology that cancels the spin precession due to the magnetic dipole moment at any energy while allowing for spin precession induced by the fundamental physics of interest to accumulate. The buildup of the vertical component of beam polarization can be measured using standard Mott polarimetry that is optimal at low electron energy. These rings can be used to measure the permanent electric dipole moment of the electron, relevant to CP violation and matter-antimatter asymmetry in the universe, and to search for dark energy and ultra-light dark matter.
Research Organization:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
AC05-00OR22725; AC05-06OR23177
OSTI ID:
1988057
Report Number(s):
JLAB-ACC-21-3473
Journal Information:
Physics Letters. B, Journal Name: Physics Letters. B Vol. 843; ISSN 0370-2693
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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