AbstractWe present advances made in the Large Area Picosecond Photodetector (LAPPD), an 8" × 8" microchannel plate photomultiplier tube (MCP-PMT), since pilot production was initiated at Incom, Inc. in 2018. The Gen-I LAPPD utilizes a stripline anode for direct charge readout. The novel Gen-II LAPPD employs an internal resistive thin-film which capacitively couples to a customizable external signal readout board, streamlining production and increasing customer flexibility. The Gen-II LAPPD, with an active area of 373 cm2, is capable of high single photoelectron (PE) gain of ∼107, low dark rates (∼1 kHz/cm2), single PE (SPE) timing resolution of ∼65 ps, and 𝒪(mm) position resolution. Coupled with a UV-grade fused silica window, the LAPPD features a high quantum efficiency (QE) bialkali photocathode of >30% at 365 nm with spectral response down to ∼165 nm. The LAPPD is an excellent candidate for electromagnetic calorimeter (ECAL) timing layers, photon-based neutrino detectors, high energy collider experiments, medical imaging systems, and nuclear non-proliferation applications.

2021-10-16·2021 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)

LAPPD Waveform Response to Annihilation Gammas Incident on BGO Crystals

作者: Hamid, Sabet ; Cole, Hamel ; Mark, Popecki ; William, Worstell ; Satya, Butler ; Lisa, Blackberg ; Yuemeng, Feng ; Michael, Minot

2021-10-16·2021 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)

Capacitively Coupled LAPPDs with 2D Pixelated Readout Planes for Time of Flight and Ring Imaging Cherenkov Applications

作者: Walne, C. ; Alfred, M. ; Dehmelt, K. ; Kiselev, A. ; Nelson, S. ; Holt, A. ; Purschke, M. L. ; He, X. ; Minot, M. ; Chiu, M. ; Garg, P. ; Aviles, M. ; Alsayegh, A. ; Stochaj, M. ; Alrashidi, R. ; Sarsour, C. M. ; Kuudaar, S. ; Whitney, P. ; Lyashenko, A. ; Woody, C. ; Hamel, C. ; Cremer, T. ; Azmoun, B. ; Xie, J. ; Scarlett, C. ; Hemmick, T. K. ; Deshpande, A. ; Foley, M. ; Mwibanda, L. ; Schmookler, B. ; Harvey, M. ; Popecki, M. ; Butler, S. ; Park, S.

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