Mass testing and characterization of 20-inch PMTs for JUNO Angel Abusleme, Thomas Adam, Shakeel Ahmad, Rizwan Ahmed, Sebastiano Aiello, Muhammad Akram, Abid Aleem, Tsagkarakis Alexandros, Fengpeng An, Qi An et al. (594 more) Eur. Phys. J. C, 82 12 (2022) 1168 Published online: 24 December 2022 DOI: 10.1140/epjc/s10052-022-11002-8