Speaker
Description
The High Rate Picosecond Photodetector (HRPPD) is a vital part of the Proximity-Focusing Ring Imaging Cherenkov Detector (pfRICH) that will be included in the ePIC experiment. HRPPDs will be used to measure the photons emitted in the Cherenkov cone emitted by particles traveling thorough the aerogel wall of the pfRICH. Reconstructing the ring of photons will allow for particle species identification based on the radius from the radiating particle. Therefore, understanding performance properties of HRPPDs, such as the uniformity of the quantum efficiency and gain as well as the dark rate, are important for the optimal operation of the detector. In this talk, I will present the current status of a test stand at Yale to measure these properties of HRPPDs, alongside preliminary results.