2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/38374An RPC carpet covering ~10**4 m**2 (ARGO-YBJ experiment) will be installed in the YangBaJing Laboratory (Tibet, P.R. China) at an altitude of 4300 m a.s.l.. A test-module of ~50 m**2 has been put in operation in this laboratory and about 10**6 air shower events have been collected. The carpet capability of reconstructing the shower features is presented.8 pages, talk given by M. Iacovacci at the 6th San Miniato Topical Seminar on 'Neutrino and Astroparticle Physics', San Miniato 1999High Energy Physics - Experimenttext