Speaker
Description
Precision studies of the electric dipole moment (EDM) and search for the ultra-light axion particles are much discussed and very important research areas related to wider efforts for exploring new physics beyond the Standard Model and CP violation problem. Highly specialized room-size storage rings utilizing 1 MeV or, sub-MeV scale polarized electron/positron beams are excellent devices to pursue electron EDM measurements and axion searches. In this talk, we present a new design based on the transparent spin methodology that cancels the spin precession due to the magnetic dipole at any beam energy while allowing for spin precession induced by the fundamental physics of interest to accumulate over time. These spin-transparent (ST) storage rings that exhibit coherence times of many hours can store a large number of particles, making the ST rings be quite competitive with larger-scale experiments in terms of potential high-precision measurement capability. We will also show that the systematic effects of the suggested measurements will be suppressed using counter-rotating bunched beams with various polarization orientations.
