High Altitude test of RPCs for the ARGO-YBJ experiment

A 50 m**2 RPC carpet was operated at the YangBaJing Cosmic Ray Laboratory (Tibet) located 4300 m a.s.l. The performance of RPCs in detecting Extensive Air Showers was studied. Efficiency and time resolution measurements at the pressure and temperature conditions typical of high mountain laboratories, are reported.Comment: 16 pages, 10 figures, submitted to Nucl. Instr. Met

Results from the analysis of data collected with 50 m2 RPC carpet at Yangbajing

An RPC carpet covering&104m2 (ARGO-YBJ experiment) will be installed in the YangBaJing Laboratory (Tibet, People's Republic of China) at an altitude of 4300 m a.s.l. A test-module of&50m2 has been put in operation in this laboratory and about 106 air shower events have been collected. The RPC performance at high altitude and the carpet capability of reconstructing the shower features are presented. ( 2000 Elsevier Science B.V. All rights reserved

Performance of RPC for the ARGO-YBJ detector operated at the Yangbajing Laboratory

Bakelite RPCs, assembled according to the ARGO design, have been operated in the high altitude Laboratory of YBJ using dedicated electronics to pick-up the streamer signal. Here we report on the results concerning absorbed current, single counting rate, efficiency and time resolution. Environmental data concerning the operating temperature inside the ARGO experimental hall are also reported