HRPPD photosensors for RICH detectors with a high resolution timing capability

by Alexander Kiselev (Brookhaven National Laboratory (US))

Friday 6 Nov 2026, 11:00 → 12:00 Europe/Zurich

40/S2-D01 - Salle Dirac (CERN)

High Rate Picosecond Photodetectors (HRPPDs) are Micro-Channel Plate (MCP) based DC-coupled photosensors recently introduced by Incom, Inc. that have an active area of 104 mm by 104 mm, pixel pitch 3.25 mm, peak quantum efficiency in excess of 30%, low dark count rates and timing resolution on the order of ~20 ps for a single photon detection. As such, these photosensors are very well suited for Ring Imaging Cherenkov (RICH) detectors that can also provide high resolution timing capability, especially in a configuration where a detected charged particle passes through the sensor window which produces a localized flash containing a few dozen Cherenkov photons.

Recently, a new version of HRPPDs has been developed that were substantially re-designed for use at the Electron-Ion Collider (EIC), which will be sited at Brookhaven National Laboratory in the US. A first batch of seven “EIC HRPPDs” was manufactured in early 2024. Results of a systematic evaluation of these first EIC HRPPD tiles, including gain and quantum efficiency (QE) uniformity, timing resolution and performance in a high magnetic field will be the main focus of this talk.

 

Coffee will be served at 10:30