Results of the ARGO-YBJ test experiment

A resistive plate counters (RPCs) carpet of ∼50 m2 has been put in operation in the Yangbajing Laboratory (Tibet, P.R. China) at 4300 m a.s.l., in order to study the RPCs performance at high altitude and the detector capability of imaging the EAS disc. This test has been performed in view of an enlarged use of RPCs for the ARGO-YBJ experiment. This experiment will be devoted to a wide range of fundamental issues in cosmic rays and astroparticle physics, including in particular γ-ray astronomy and γ-ray bursts physics at energies ⩾100 GeV. In this paper we present and discuss the procedures adopted to calibrate the detector and reconstruct the shower direction. Results concerning many shower features as the angular distribution, the density spectrum, the time profile of the shower front, are found well consistent with the expectation

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

An RPC carpet covering View the MathML source (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 View the MathML source 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

Performance of the RPCs for the ARGO detector operated at the YangBaJing Laboratory (4300 m a.s.l.)

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