Advancing the ²²⁵Ra EDM Experiment at Argonne National Laboratory through High-Voltage Upgrades and Improved Systematic Control

Permanent non-zero Electric Dipole Moments (EDMs) are a clear signature of new sources of Time-Reversal and Charge-Parity symmetry violation (CPV), which could help explain the matter—antimatter asymmetry of the universe. The significant octupole deformation of the 225Ra nucleus leads to an enhanced nuclear Schiff moment, making it a sensitive candidate for CPV searches in the hadronic sector (i.e. complementary to electron EDM searches). Ongoing upgrades aim to improve the sensitivity of the atomic Ra EDM experiment at Argonne National Lab by three orders of magnitude relative to the 2016 result. A key component to one of these upgrades is the high-voltage system used to generate, control, and monitor the electric field used in the experiment. Maximizing the applied field and improving field-reversal fidelity are essential for improving the statistical sensitivity while also minimizing field-correlated systematic uncertainties. In this presentation, I will describe the current status and plans for the high voltage apparatus.