Performance of Large Area Picosecond Photo-Detectors (LAPPDTM)

Abstract We report on performance results achieved for recently produced LAPPDs - largest commercially available planar geometry photodetectors based on microchannel plates. These results include electron gains of up to 1 0 7 , low dark noise rates (∼100 Hz/cm2 at a gain of 6 ⋅ 1 0 6 ), single photoelectron (PE) timing resolution of ∼50 picoseconds RMS (electronics limited), and single photoelectron spatial resolution along and across strips of 3.2mm (electronics limited) and 0.8 mm RMS respectively and high (about 25% or higher in some units) QE uniform bi-alkali photocathodes. LAPPDs is a good candidate to be employed in neutrino experiments (e.g. ANNIE (Back et al., 2017) [1] , WATCHMAN (Askins et al., 2015) [2] , DUNE (Capozzi et al., 2018) [3] ), particle collider experiments (e.g. EIC (Accardi et al., 2016) [4] ), neutrinoless double-beta decay experiments (e.g. THEIA (Fischer et al., 2018) [5] ), medical and nuclear non-proliferation applications.