Recent development on the realization of a 1-inch VSiPMT prototypeF.C.T. Barbato, G. Barbarino, L. Campajola, F. Di Capua, C.M. Mollo, A. Valentini and D. VivoloEPJ Web Conf., 136 (2017) 02016DOI: https://doi.org/10.1051/epjconf/201713602016