The CP Violation search in Positronium (CPVPs) experiment

CP violation is a necessary ingredient to explain the observed abundance of matter over antimatter in the universe. To date, known sources of CPV have so far been unable to provide enough CPV to explain the matter excess. CPVPs is a project to search for new sources of CP violation in the 3-gamma decay of tensor polarized positronium (Ps). The core component of CPVPs is a 48-element array of LYSO-based gamma detectors which provides high sensitivity to CP violating observables. The tensor polarization is obtained by employing a magnetic field to mix singlet and triplet Ps states. This state mixing results in a time dependence of magnetic substate populations and corresponding tensor polarization. A brief description of the experiment and a status report on the apparatus will be presented.