Search for Fundamental Symmetry Violations through Upgraded Radium-225 EDM Measurements

Permanent non-zero Electric Dipole Moments (EDMs) are a clear signature of new sources of Charge-parity (CP) and Time-Reversal (T) symmetry violation, potentially offering an explanation for the baryon asymmetry of the universe. The pear-shaped nuclear structure and enhanced nuclear Schiff moment of Radium-225 make it a promising candidate for atomic EDM measurements. The next generation of the experiments aims to improve sensitivity by three orders of magnitude compared to the previous measurements.

Offline upgrades for the Ra EDM experiment at Argonne National Laboratory are currently being developed at the Facility for Rare Isotope Beams (FRIB). A critical component of this upgrade is the high-voltage system, which is used to couple the EDM to an external electric field. Increasing the applied voltage and improving our understanding of electric field reversibility can enhance statistical sensitivity and reduce systematic uncertainties. Additionally, the Isotope Harvesting program at FRIB may enable the production of Radium-225 for use in the experiment. To facilitate efficient use of harvested isotopes, we are planning to build an apparatus to evaluate and optimize efficiency of neutral atomic beam generation from FRIB harvested isotopes.