Performance of the LHCb RICH photo-detectors and readout in a system test using charged particles from a 25 ns-structured beam -н Adinolfi, M, Albrecht, E, D'Ambrosio, C, Gys, T, Morant, J, Piedigrossi, D, Patel, M, Wyllie, K, Ameri, M, Fontanelli, F, Mini, G, Sannino, M, Arnaboldi, C, Bellunato, T, Fanchini, E, Perego, D, Pessina, G, Barham, C, Buszello, C, Dickens, J, Gibson, V, Jones, C, Kerzel, U, Rogers, G, Skottowe, H